标准编号:	GB 38032-2020
中文名称:	电动客车安全要求
英文名称:	Electric buses safety requirements
中标分类:	T47    新能源汽车及其他类型汽车
行业分类:	GB    国家标准
ICS分类:	43.080.20 43.080.20    客车 43.080.20
发布机构:	国家市场监督管理总局 国家标准化管理委员会
发布日期:	2020-05-12
实施日期:	2021-1-1
标准状态:	valid
翻译语言:	英文
文件格式:	PDF
中文字符数:	9000 字
翻译价格(元):	430.0
交付时间:	付款后 1 个工作日

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. All technical contents of this standard are compulsory. This standard is developed in accordance with the rules given in GB/T 1.1-2009 This standard was proposed by and is under the jurisdiction of the Ministry of Industry and Information Technology of the People's Republic of China. Introduction This standard is formulated on the basis of GB 18384 and GB 38031, for the purpose of improving the safety technology of electric buses, perfecting the special waterproof and dustproof, fire prevention, rechargeable energy storage system, charging and other safety requirements and test methods of electric buses. In the process of formulation, this standard refers to the existing traditional bus standards and the relevant standards of the complete electric vehicle and its parts. The main reference standards are GB/T 31467.3-2015, GB/T 18487.1-2015 and UN GTR No.20. Electric buses safety requirements 1 Scope This standard specifies the safety requirements and test methods for electric buses. This standard is applicable to electric buses of Category M2 and Category M3, including battery electric buses and hybrid electric buses. This standard is not applicable to fuel cell electric buses. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 2408-2008 Plastics - Determination of burning characteristics - Horizontal and vertical test GB 4208 Degrees of protection provided by enclosure (IP code) GB 8624-2012 Classification for burning behavior of building materials and products GB/T 10295 Thermal insulation - Determination of steady-state thermal resistance and related properties - Heat flow meter apparatus GB 13094 The safety requirements for light bus construction GB/T 15089 Classification of power-driven vehicles and trailers GB 17578 Requirements and test methods of strength for the superstructure of bus GB/T 18384 Electric vehicles safety requirements GB/T 19596 Terminology of electric vehicles GB 20071-2006 The protection of the occupants in the event of a lateral collision GB/T 31498-2015 The safety requirement of electric vehicle post crash 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB 13094, GB/T 15089, GB/T 19596 and the following apply. 3.1 minimum management unit of battery system minimum battery unit monitored by the battery management system 4 Safety requirements 4.1 General The general safety of electric buses shall comply with the requirements of GB 18384. 4.2 Waterproof and dustproof performance 4.2.1 Wading requirement of complete vehicle Carry out the complete vehicle wading test according to the test method specified in 5.1.1. Within 10min after completion of the vehicle wading test, the insulation resistance of the complete vehicle shall be greater than 1MΩ. 4.2.2 Protection degree requirements for Class B voltage components Carry out the protection degree test according to the test method specified in 5.1.2. The insulation resistance of the complete vehicle shall be greater than 1MΩ, and the protection degree of the following components shall not be lower than IP67: a) Class B voltage electrical equipment with lowest point below the cabin floor and 500mm above the ground and connectors connected to Class B voltage components; b) Class B voltage electrical equipment installed on the roof and without protective devices (except those for receiving electricity). 4.2.3 Flooding requirement of complete vehicle Carry out the flooding test of complete vehicle according to the test method specified in 5.1.3, and the vehicle will not catch fire or explode within 2h after the test is completed. 4.3 Fire resistance 4.3.1 Flame retardant performance of Class B voltage components Carry out the flame retardant performance test for Class B voltage components according to the test method specified in 5.2.1. The flame retardant performance of the insulation materials used for Class B voltage components shall meet the requirements specified in Table 1.   Table 1 Flame retardant performance requirements of insulation materials used for Class B voltage components No. Component assembly Component name Standard requirement Horizontal combustion meets the requirements of GB/T 2408-2008, Class HB Vertical combustion meets the requirements of GB/T 2408-2008, Class V-0. 1 Drive motor system Enclosure √ √ 2 Cable insulation layer √ √ 3 PCB circuit board √ √ 4 Insulating plate √ √ 5 Insulating paper √ — 6 Insulation film √ — 7 Motor driven compressor Enclosure √ √ 8 Cable insulation layer √ √ 9 Electric heater Enclosure √ √ 10 Cable insulation layer √ √ 11 DC/DC converter Enclosure √ √ 12 Cable insulation layer √ √ 13 PCB circuit board √ √ 14 Distribution box Enclosure √ √ 15 Cable insulation layer √ √ 16 Charging socket Enclosure √ √ 17 Cable insulation layer √ √ 18 Double-wall heat-shrinkable tube Double-wall heat-shrinkable tubes (all sizes) √ √ 19 Bellow Bellows (all sizes) √ √ Note: "—" means that the part does not need to meet this requirement. 4.3.2 Flame retardant and thermal insulation performance between rechargeable energy storage system (or installation cabin) and passenger cabin The rechargeable energy storage system (or installation cabin) shall be separated from the passenger cabin by flame retardant and thermal insulation materials and shall be subjected to flame retardant and thermal insulation performance test according to the test methods specified in 5.2.2. The combustion performance of the flame retardant and thermal insulation material shall comply with the Class A requirements specified in GB 8624-2012, and the thermal conductivity shall be less than or equal to 0.04W/(m•K) at 300°C. 4.4 Safety requirements for rechargeable energy storage system 4.4.1 Requirements for thermal runaway of minimum management unit of battery system The thermal runaway test for minimum management unit of battery system shall be carried out according to the test methods specified in 5.3.1. The test object shall not cause fire or explosion. 4.4.2 Fire retardant requirements for part materials of rechargeable energy storage system Except for battery cells, other non-metallic parts in the rechargeable energy storage system shall be subjected to flame retardation test for part materials in the rechargeable energy storage system according to the test method specified in 5.3.2. The following flame retardation requirements shall be met: a) for parts that meet any of the following conditions, the flame retardant grade of their materials shall reach the horizontal combustion grade HB and the vertical combustion grade V-0: — the mass of a single part ≥50g; — the total mass of parts of the same model in a single rechargeable energy storage system >200g. b) for other non-metallic parts, the flame retardant grade of their materials shall reach the horizontal combustion grade HB 75 and the vertical combustion grade V-2. 4.4.3 Isolation requirements for installation cabin The installation cabin of the rechargeable energy storage system shall be isolated from the passenger compartment (except the ventilation device) to ensure that passengers cannot touch the rechargeable energy storage system. If the air is taken from the passenger compartment to adjust the temperature for the rechargeable energy storage system, the air inlet shall be equipped with a smoke control device to ensure that harmful gases cannot enter the passenger compartment from the air inlet when safety problems occur in the rechargeable energy storage system. 4.4.4 Requirements for disconnecting devices Manual maintenance switches and fuses shall be installed for the rechargeable energy storage system. 4.4.5 Requirements for pressure relief and venting devices The rechargeable energy storage system shall be provided with pressure relief and pressure-balanced devices, and the relief pressure shall not exceed 50kPa. 4.4.6 Requirements for abnormality alarm The rechargeable energy storage system shall send a thermal event alarm signal 5min before any passenger compartment hazard caused by the thermal propagation resulting from thermal runaway of single cell. 4.5 Safety requirements for control system 4.5.1 Priority requirement for braking signal When the braking signal and acceleration signal occur simultaneously, the complete vehicle control system shall only respond to the braking signal. 4.5.2 Control requirements for driving power system In the process of driving, when the vehicle is in abnormal condition that requires the failure of Class B high voltage power supply of the complete vehicle, if the vehicle speed is greater than 5km/h, the steering system shall be maintained in the power assist state or keep this state for at least 30s. 4.6 Safety requirements for charging 4.6.1 Safety requirements for charging interface When the complete vehicle has multiple charging interfaces, the charging interfaces that do not perform charging works shall be de-energized. 4.6.2 Temperature monitoring requirements for charging socket The charging socket of the vehicle shall be equipped with a temperature monitoring device, which shall be able to transmit the corresponding signal to the vehicle according to the temperature change, for realizing the temperature monitoring and over-temperature protection functions of the vehicle charging interface. 4.7 Safety requirements for vehicle collision and rollover 4.7.1 Safety requirements for vehicle collision If the lowest point of a rechargeable energy storage system is no more than 1m above the ground (the vehicle is in no-load state), the vehicle shall be subjected to the collision test according to the test methods specified in 5.5.1. After the collision test, the vehicle shall meet the requirements of GB/T 31498-2015, 4.2 to 4.4. 4.7.2 Safety requirements for vehicle rollover If the superstructure strength test is required for the electric bus, it shall be carried out according to the test methods specified in 5.5.2 under the conditions that the SOC of the rechargeable energy storage system is kept at 30% to 50% and in the state of Class B voltage. After the test, the vehicle shall meet the requirements of GB/T 31498-2015, 4.2 to 4.4. 4.7.3 Exemptions for vehicle collision and rollover tests When it is necessary to assess the vehicle collision safety requirements, if the vehicle meets one of the following two conditions, it shall be regarded as meeting the requirements of 4.7.1. a) When compared with the models that have passed the collision test, the following five conditions are met at the same time: — the same manufacturer and type of rechargeable energy storage system (unit or assembly); — the energy of the rechargeable energy storage system is the same or reduced; — the cabinet structure is the same or strengthened; — the installation structure of the cabinet is the same or strengthened; — the structure of the vehicle body in the battery pack installation area is unchanged or strengthened (the opening size of the structure is the same or smaller). b) When compared with the models that have passed the collision test and have no mechanical damage to the battery pack after the collision, the following requirements are met: — the structure of the vehicle body in the battery pack installation area is unchanged or strengthened (the opening size of the structure is the same or smaller).

Foreword i Introduction ii 1 Scope 2 Normative references 3 Terms and definitions 4 Safety requirements 4.1 General 4.2 Waterproof and dustproof performance 4.3 Fire resistance 4.4 Safety requirements for rechargeable energy storage system 4.5 Safety requirements for control system 4.6 Safety requirements for charging 4.7 Safety requirements for vehicle collision and rollover 5 Test methods 5.1 Waterproof and dustproof 5.2 Fire resistance 5.3 Safety of rechargeable energy storage system 5.4 Functional safety protection 5.5 Safety requirements for vehicle collision and rollover 6 Implementation date Annex A (Normative) Thermal runaway test method Annex B (Normative) Collision test method Bibliography

ICS 43.080.20 T 47 中华人民共和国国家标准 GB 38032—2020 电动客车安全要求 Electric buses safety requirements 2020-05-12发布 2021-01-01实施 国家市场监督管理总局 国家标准化管理委员会 发布 前 言 本标准的全部技术内容为强制性。 本标准按照GB/T 1.1—2009给出的规则起草。 本标准由中华人民共和国工业和信息化部提出并归口。 引 言 为进一步提高电动客车安全技术水平，完善电动客车特殊的防水防尘、防火、可充电储能系统、充电等安全要求及试验方法，在满足GB 18384、GB 38031的基础上制定本标准。 本标准在制定过程中参考了现有传统客车标准、电动汽车整车及零部件相关标准，主要参考的标准有GB/T 31467.3—2015、GB/T 18487.1—2015及UN GTR No.20。 电动客车安全要求 1 范围 本标准规定了电动客车的安全要求和试验方法。 本标准适用于M2 类、M3 类电动客车，包括纯电动客车、混合动力电动客车。 本标准不适用于燃料电池电动客车。 2 规范性引用文件 下列文件对于本文件的应用是必不可少的。凡是注日期的引用文件，仅注日期的版本适用于本文件。凡是不注日期的引用文件，其最新版本(包括所有的修改单)适用于本文件。 GB/T 2408—2008 塑料 燃烧性能的测定 水平法和垂直法 GB/T 4208 外壳防护等级(IP代码) GB 8624—2012 建筑材料及制品燃烧性能分级 GB/T 10295 绝热材料稳态热阻及有关特性的测定 热流计法 GB 13094 客车结构安全要求 GB/T 15089 机动车辆及挂车分类 GB 17578 客车上部结构强度要求及试验方法 GB 18384 电动汽车安全要求 GB/T 19596 电动汽车术语 GB 20071—2006 汽车侧面碰撞的乘员保护 GB/T 31498—2015 电动汽车碰撞后安全要求 3 术语和定义 GB 13094、GB/T 15089、GB/T 19596界定的以及下列术语和定义适用于本文件。 3.1 蓄电池系统最小管理单元 minimum management unit of battery system 电池管理系统可以监控的最小蓄电池单元。 4 安全要求 4.1 通用安全要求 电动客车通用安全应符合GB 18384的要求。 4.2 防水防尘性能要求 4.2.1 整车涉水要求 按5.1.1规定的试验方法进行整车涉水试验，试验完成后10 min内，整车绝缘电阻值应大于1MΩ。 4.2.2 B级电压部件防护等级要求 按5.1.2规定的试验方法进行防护等级试验，整车绝缘电阻值应大于1MΩ，以下部件的防护等级应不低于IP67： a) 最低点位于客舱地板以下且距地面500mm 以下的B级电压电气设备和与B级电压部件相连的连接器； b) 安装在车顶且无防护装置的B级电压电气设备(受电装置除外)。 4.2.3 整车浸水要求 按5.1.3规定的试验方法进行整车浸水试验，试验完成后2h内车辆应不起火、不爆炸。 4.3 防火性能要求 4.3.1 B级电压部件阻燃性能要求 按5.2.1规定的试验方法进行B级电压部件阻燃性能试验，B级电压部件所用绝缘材料阻燃性能应满足表1的规定。 表1 B级电压部件所用绝缘材料阻燃性能要求 序号 部件总成 部件名称 标准要求 水平燃烧满足 垂直燃烧满足 GB/T 2408—2008规定的 HB级 GB/T 2408—2008规定的 V-0级 1 驱动电机系统 外壳 √ √ 2 线缆绝缘层 √ √ 3 PCB电路板 √ √ 4 绝缘板 √ √ 5 绝缘纸 √ — 6 绝缘薄膜 √ — 7 电动压缩机 外壳 √ √ 8 线缆绝缘层 √ √ 9 电暖风 外壳 √ √ 10 线缆绝缘层 √ √ 11 DC/DC变换器 外壳 √ √ 12 线缆绝缘层 √ √ 13 PCB电路板 √ √ 14 配电箱 外壳 √ √ 15 线缆绝缘层 √ √ 16 充电插座 外壳 √ √ 17 线缆绝缘层 √ √ 18 热收缩双壁管 热收缩双壁管 (所有尺寸规格 ) √ √ 19 波纹管 波纹管 (所有尺寸规格 ) √ √ 注：“—”该零件不需满足此项要求。 4.3.2 可充电储能系统(或安装舱体)与客舱间阻燃隔热性能要求 可充电储能系统(或安装舱体)与客舱之间应使用阻燃隔热材料，按5.2.2规定的试验方法进行可充电储能系统(或安装舱体)与客舱间阻燃隔热性能试验，阻燃隔热材料的燃烧特性应符合GB 8624—2012中规定的A 级要求，并且在300℃时导热系数应不大于0.04W/(m·K)。 4.4 可充电储能系统安全要求 4.4.1 蓄电池系统最小管理单元热失控要求 蓄电池系统最小管理单元按照5.3.1规定的试验方法进行热失控试验，试验对象应不起火、不爆炸。 4.4.2 可充电储能系统内零部件材料阻燃要求 除蓄电池单体外，可充电储能系统内其他非金属零部件，按照5.3.2规定的试验方法进行可充电储能系统内零部件材料阻燃试验，应满足以下阻燃要求： a) 满足以下任一条件的零部件，其材质需满足水平燃烧HB级和垂直燃烧V-0级的要求： ——单个零部件质量≥50g； ——单个可充电储能系统内相同型号的零件总质量>200g。 b) 其他非金属零部件材质满足水平燃烧HB75级和垂直燃烧V-2级的要求。 4.4.3 安装舱体隔离要求 可充电储能系统安装舱体应与客舱隔离(引风装置除外)，保证乘客不能触及到可充电储能系统。若从客舱引风为可充电储能系统调节温度，则引风口应配置烟雾控制装置，可充电储能系统发生安全问题时产生的有害气体应不能从进风口进入客舱。 4.4.4 断开装置要求 可充电储能系统应安装熔断器和手动维修开关。 4.4.5 泄压透气装置要求 可充电储能系统应设有定向泄压和压力平衡装置，泄压压强应不大于50kPa。 4.4.6 异常报警要求 可充电储能系统在由于单个电池热失控引起热扩散、进而导致乘员舱发生危险之前5min，应提供一个热事件报警信号。 4.5 控制系统安全要求 4.5.1 制动信号优先要求 整车控制系统当制动信号和加速信号同时发生时，应只响应制动信号。 4.5.2 行驶中助力系统控制要求 车辆在行驶过程中，出现需要整车断B级高压电的车辆异常情况时，在车速大于5km/h时应保持转向系统维持助力状态或至少保持转向助力状态30s。 4.6 充电安全要求 4.6.1 充电接口安全要求 整车具备多个充电接口时，不执行充电工作的充电接口应不带电。 4.6.2 充电插座温度监控要求 车辆的充电插座应设置温度监控装置，该装置应能根据温度变化传送相应信号给车辆，用于实现车辆充电接口的温度监测和过温保护功能。 4.7 车辆碰撞和侧翻后安全要求 4.7.1 车辆碰撞后安全要求 若有可充电储能系统其最低点距地面不超过1m(车辆空载状态)，则应按照5.5.1规定的试验方法进行碰撞试验，车辆在碰撞试验后应符合GB/T 31498—2015中4.2~4.4的要求。 4.7.2 车辆侧翻后安全要求 若电动客车需按照5.5.2规定的试验方法进行上部结构强度试验，应在其可充电储能系统荷电量(SOC)保持在30%~50%且处于B级电压上电状态下进行试验，试验后应符合GB/T 31498—2015中4.2~4.4的要求。 4.7.3 车辆碰撞和侧翻试验豁免条款 当需要考核车辆碰撞安全要求的车型，满足以下两种情况之一，则视同符合4.7.1的要求。 a) 与已经通过碰撞试验的车型相比，同时满足以下五个条件时： ——可充电储能系统(单体或总成)生产企业及类型相同； ——可充电储能系统能量相同或减小； ——箱体结构相同或加强； ——箱体安装结构相同或加强； ——电池包安装区域的车体结构不变或加强(结构开口尺寸相同或变小)。 b) 与已经通过碰撞试验且碰撞后对电池包无任何机械损伤的车型相比，满足以下条件时： ——电池包安装区域的车体结构不变或加强(结构开口尺寸相同或变小)。 5 试验方法 5.1 防水防尘 5.1.1 整车涉水试验 车辆应在300mm 深的水池中，以5km/h~10km/h的速度行驶500m，时间3min~6min；如果水池长度小于500m，应重复试验使涉水长度累计不小于500m，包括车辆在水池外的总试验时间应少于10min。 按GB 18384中的绝缘电阻测量方法进行绝缘电阻测试。 5.1.2 B级电压部件防护等级试验 按GB/T 4208的规定进行防护等级试验，试验后，按GB 18384中的绝缘电阻测量方法进行绝缘电阻测试。 5.1.3 整车浸水试验 车辆在断开A 级和B级电压电路状态下，在水深500mm 水池中浸泡24h。 5.2 防火性能 5.2.1 B级电压部件阻燃性能试验 水平燃烧和垂直燃烧按GB/T 2408—2008的规定进行试验。 5.2.2 可充电储能系统(或安装舱体)与客舱间阻燃隔热性能试验 燃烧特性按GB 8624—2012的规定进行试验，导热系数按GB/T 10295的规定进行试验。 5.3 可充电储能系统安全 5.3.1 蓄电池系统最小管理单元热失控试验 按附录A 的规定进行热失控试验。 5.3.2 可充电储能系统内零部件材料阻燃试验 水平燃烧和垂直燃烧按GB/T 2408—2008的规定进行试验。 5.4 功能性安全防护 制造商根据4.4.3、4.4.4、4.4.5、4.5、4.6规定的各项功能防护要求，提供具体方案说明，检测机构据此说明材料在零部件或实车上进行测试验证，并进行符合性判定。 5.5 车辆碰撞和侧翻安全 5.5.1 车辆碰撞安全试验 按附录B的规定进行车辆碰撞安全试验。 5.5.2 车辆侧翻安全试验 按GB 17578的规定进行上部结构强度试验。 6 实施日期 新申请型式批准的车型自本标准实施之日起开始执行，已获得型式批准的车型自本标准实施之日起第13个月开始执行。 附 录 A (规范性附录) 热失控试验方法 A.1 试验对象 试验对象为蓄电池系统最小管理单元。 A.2 试验方法 A.2.1 试验环境温度为22℃±5℃，相对湿度为15%~90%，大气压力为86kPa~106kPa。 A.2.2 使用平面状或者棒状加热装置，并且其表面应覆盖陶瓷、金属或绝缘层，加热装置的功率要求见表A.1。完成试验对象与加热装置的装配，加热装置与蓄电池单体应直接接触，加热装置的尺寸规格应不大于试验对象的被加热面；安装温度监测器，监测点温度传感器布置在远离热传导的一侧，即安装在加热装置的对侧(如图A.1所示)。温度数据的采样间隔应小于1s，准确度要求为±2 ℃，温度传感器尖端的直径应小于1mm。 表A.1 加热装置功率选择 试验对象电能 E Wh 加热装置最大功率 W E<100 30~300 100≤E<400 300~1000 400≤E<800 300~2000 E≥800 >600 a) 硬壳及软包电池 b) 圆柱形电池-Ⅰ c) 圆柱形电池-Ⅱ 说明： ——加热装置 ——加热装置(电阻丝) ——温度监测器 图A.1 加热触发时温度传感器的布置位置示意图 A.2.3 将试验对象充电到100% SOC后，再对试验对象用1C倍率充电电流继续充电12min。立刻启动加热装置，并以其最大功率对试验对象进行持续加热，当发生热失控或者A.2.2定义的监测点温度达到300℃时，停止触发，关闭加热装置。 A.2.4 热失控试验判定条件如下： a) 试验对象产生电压降，且下降值超过初始电压的25%； b) 监测点温度达到电池厂商规定的最高工作温度； c) 监测点的温升速率dT/dt≥1℃/s，且持续3s以上。 当a)和c)或者b)和c)发生时，判定发生热失控。 A.2.5 加热过程中及加热结束1h内，如果发生起火、爆炸现象，则试验终止。 附 录 B (规范性附录) 碰撞试验方法 B.1 试验场地 试验场地应能容纳移动壁障驱动系统、被撞车碰撞后移动和试验设备的安装。车辆发生碰撞和移动的场地应水平、平整，路面摩擦系数不小于0.5。 B.2 试验前的车辆准备 B.2.1 可充电储能系统荷电量应调整为30%~50% SOC，对于纯电动客车，整车应处于上电状态，对于混合动力客车，整车可处于低压上电状态。 B.2.2 试验车辆应为整备质量状态。 B.2.3 车窗应为关闭状态，车门处于关闭但不锁止状态。 B.2.4 挡位应处于空挡状态，驻车制动器松开。 B.2.5 轮胎气压应调整到制造商规定的气压值。 B.2.6 试验车辆放置应保证车轴处于水平。 B.3 试验条件 B.3.1 试验车辆应保持静止。 B.3.2 移动变形壁障的特性应符合GB 20071—2006中附录C规定的特性。移动变形壁障上应装有适当装置，以避免与试验车发生二次碰撞。 B.3.3 试验时，移动变形壁障撞击试验车辆的最薄弱位置。(最薄弱位置主要考虑动力电池安装及整车防护条件，如车辆侧面安装有动力电池，则优先选择车辆侧面进行碰撞。具体由检测机构与制造商确定。) B.3.4 移动变形壁障的纵向中垂面轨迹应垂直于被撞车辆的纵向中垂面。 B.3.5 在碰撞瞬间，应确保由变形壁障前表面上边缘和下边缘限定的水平中间平面与试验前确定的位置的上下偏差在±25mm 内。 B.3.6 在碰撞瞬间，应确保由变形壁障前表面左边缘和右边缘限定的垂直中间平面与试验前确定的位置的左右偏差在±25mm 内。 B.4 试验速度 在碰撞瞬间，移动变形壁障的速度应为50km/h±1km/h，并且该速度至少在碰撞前0.5m 内保持稳定。测量仪器的准确度为1%。如果试验在更高的碰撞速度下进行，且车辆符合4.7.1的要求，也认为合格。 参 考 文 献 [1] GB/T 18487.1—2015 电动汽车传导充电系统 第1部分：通用要求 [2] GB/T 31467.3—2015 电动汽车用锂离子动力蓄电池包和系统 第3部分：安全性要求与测试方法 [3] GB 38031 电动汽车用动力蓄电池安全要求 [4] UN GTR No.20 Electric Vehicle Safety(EVS)(ECE/TRANS/180/Add.20)