GB/T 24347-2021 DC/DC converter for electric vehicles English
DC/DC converter for electric vehicles
1 Scope
This document specifies the technical requirements and test methods of DC/DC converter for electric vehicles.
This document is applicable to DC/DC converter for electric vehicles, for other circuits with DC/DC conversion function, this document may be referred.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 18655-2018 Vehicles boats and internal combustion engines—Radio disturbance characteristics—Limits and methods of measurement for the protection of on-board receivers
GB/T 19596 Terminology of electric vehicles
GB/T 19951 Road vehicles—Disturbance test methods for electrical/electronic component from electrostatic discharge
GB/T 28046.3-2011 Road vehicles—Environmental conditions and testing for electrical and electronic equipment—Part 3: Mechanical loads
GB/T 28046.4-2011 Road vehicles—Environmental conditions and testing for electrical and electronic equipment—Part 4: Climatic loads
ISO 7637-2: 2011 Road vehicles—Electrical disturbances from conduction and coupling—Part 2: Electrical transient conduction along supply lines only
ISO 7637-3: 2016 Road vehicles—Electrical disturbances from conduction and coupling Part 3: Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines
ISO 11452 2 Road vehicles—Component test methods for electrical disturbances from narrowband radiated electromagnetic energy—Part 2: Absorber lined shielded enclosure
ISO 11452-4 Road vehicles—Component test methods for electrical disturbances from narrowband radiated electromagnetic energy—Part 4: Harness excitation methods
ISO 11452-8: 2015 Road vehicles—Component test methods for electrical disturbances from narrowband radiated electromagnetic energy—Part 8: Immunity to magnetic fields
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 19596 and GB/T 29259 and the following apply.
3.1
DC/DC converter
device capable of converting electric energy of one DC voltage value into electric energy of another DC voltage value
[Source: GB/T 19596-2017, 3.2.4.1, modified]
3.2
overshoot and response time
overshoot refers to the ratio (%) for the maximum deviation of the transient value from the steady-state value to the steady-state value in the process of the controlled value of the DC/DC converter from the change time to the recovery within the control error range when the input or output changes; response time refers to the time when the controlled quantity reaches and remains the allowable deviation range if the input or output changes
Note: The schematic diagram for overshoot and response time is shown in Figure 1.
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Figure 1 Schematic diagram for overshoot and response time
3.3
quiescent current
current of low-voltage battery consumed by DC/DC converter in sleep status
3.4
weighted efficiency
weighted average of each efficiency of the load spectrum corresponding to the DC/DC converter
3.5
DC/DC for high voltage output
DC/DC converter with a rated output voltage level greater than 60V and less than 1,500V
3.6
DC/DC for low voltage output
DC/DC converter with a rated output voltage level not greater than 60V
3.7
ripple factor
ratio of the half of the difference between the peak value and the valley value of the pulsating DC power to the absolute value of its direct current component
[Source: GB/T 19826-2014, 3.8]
4 Technical requirements
4.1 Appearance requirements
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Technical requirements 4.1 Appearance requirements 4.2 Input-output characteristics 4.3 Protection function 4.4 Environmental adaptability 4.5 Electromagnetic compatibility 4.6 Electrical safety 5 Test methods 5.1 Test requirements 5.2 Appearance test 5.3 Input-output characteristics test 5.4 Protection function test 5.5 Environmental adaptability test 5.6 Electromagnetic compatibility test 5.7 Electrical safety test Bibliography
1 范围 本文件规定了电动汽车DC/DC变换器的技术要求、试验方法。 本文件适用于电动汽车用DC/DC变换器，其他具有DC/DC转换功能的电路参照本文件。 2规范性引用文件 下列文件中的内容通过文中的规范性引用而构成本文件必不可少的条款。其中，注日期的引用文件，仅该日期对应的版本适用于本文件；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 18655—2018车辆、船和内燃机 无线电骚扰特性 用于保护车载接收机的限值和测量方法 GB/T 19596 电动汽车术语 GB/T 19951 道路车辆 电气/电子部件对静电放电抗扰性的试验方法 GB/T 28046.3—2011道路车辆 电气及电子设备的环境条件和试验 第3部分：机械负荷 GB/T 28046.4—2011道路车辆 电气及电子设备的环境条件和试验 第4部分：气候负荷 GB/T 29259道路车辆 电磁兼容术语 ISO 7637-2：2011道路车辆 由传导和耦合引起的电骚扰 第2部分：沿电源线的电瞬态传导(Road vehicles—Electrical disturbances from conduction and coupling—Part 2：Electrical transient conduction along supply lines only) ISO 7637-3：2016道路车辆 由传导和耦合引起的电骚扰 第3部分：除电源线外的导线通过容性和感性耦合的电瞬态发射(Road vehicles—Electrical disturbances from conduction and coupling Part 3：Electrical transient transmission by capacitive and inductive coupling via lines other than supply lines) ISO 11452 2道路车辆 窄带辐射电磁能引发的电骚扰的零部件试验方法 第2部分：装有吸波材料的屏蔽室(Road vehicles—Component test methods for electrical disturbances from narrowband radiated electromagnetic energy—Part 2：Absorber lined shielded enclosure) ISO 11452-4道路车辆 窄带辐射电磁能引发的电骚扰的零部件试验方法 第4部分：大电流注入(BCI)法(Road vehicles—Component test methods for electrical disturbances from narrowband radi-ated electromagnetic energy—Part 4：Harness excitation methods) ISO 11452-8：2015 道路车辆 窄带辐射电磁能引发的电骚扰的零部件试验方法 第8部分：磁场抗扰法(Road vehicles—Component test methods for electrical disturbances from narrowband radia-ted electromagnetic energy—Part 8：Immunity to magnetic fields) 3术语和定义 GB/T 19596、GB/T 29259界定的以及下列术语和定义适用于本文件。 3.1 DC/DC变换器DC/DC converter 能够将一个直流电压值的电能变换为另一个直流电压值的电能的装置。 [来源：GB/T 19596—2017，3.2.4.1，有修改] 3.2 超调量和恢复时间 overshoot and response time 输入或输出发生跃变时，DC/DC变换器的被控制量从变化时刻起到恢复至控制误差范围内的过程中，瞬态值偏离稳态值的最大偏离量占稳态值的百分比即为超调量；从输入或输出发生变化的时刻开始，被控制量达到并保持在允许偏差范围内的时间为恢复时间。 注：招调和恢复时间示意图如图1所示。
4.5.2.2低压沿电源线的电瞬态传导抗扰度 低压沿电源线的电瞬态传导抗扰使用的试验等级及功能特性状态要求应符合表4、表5的规定。 表4 12 V系统使用的试验等级及功能特性状态要求 试验脉冲 试验等级/V 最少脉冲数或 试验时间 短脉冲循环时间或脉冲重复时间 功能特性状态要求 最小 最大 1 -112 500个脉冲 0.5 s 5 s 状态Ⅲ 2a +55 500个脉冲 0.2 s 5 s 状态I 2b +10 10个脉冲 0.5 s 5 s 状态Ⅲ 3a -165 1 h 90 ms 100 ms 状态I 3b +112 1 h 90 ms 100 ms 状态I
表5 24 V系统使用的试验等级及功能特性状态要求 试验脉冲 试验等级/V 最少脉冲数或试验时间 短脉冲循环时间或脉冲重复时间 功能特性状态要求 最小 最大 1 -450 500个脉冲 0.5 s 5 s 状态Ⅲ 2a +55 500个脉冲 0.2 s 5 s 状态I 2b +20 10个脉冲 0.5 s 5 s 状态Ⅲ 3a -220 1 h 90 ms 100 ms 状态I 3b +220 1 h 90 ms 100 ms 状态I
