GB/T 45120-2024道路車(chē)輛48 V供電電壓電氣要求及試驗(yàn)

ICS43.040.10

CCST36

中華人民共和國(guó)國(guó)家標(biāo)準(zhǔn)

GB/T45120—2024

道路車(chē)輛48V供電電壓

電氣要求及試驗(yàn)

Roadvehicles—Supplyvoltageof48V—

Electricalrequirementsandtests

（ISO21780：2020，MOD）

2024?12?31發(fā)布2024?12?31實(shí)施

國(guó)家市場(chǎng)監(jiān)督管理總局

國(guó)家標(biāo)準(zhǔn)化管理委員會(huì)發(fā)布

GB/T45120—2024

目次

前言··························································································································Ⅲ

1范圍·······················································································································1

2規(guī)范性引用文件········································································································1

3術(shù)語(yǔ)和定義··············································································································1

4功能狀態(tài)·················································································································2

4.1通則·················································································································2

4.2功能狀態(tài)1（FS1）·································································································2

4.3功能狀態(tài)2（FS2）·································································································2

4.4功能狀態(tài)3（FS3）·································································································3

4.5功能狀態(tài)4（FS4）·································································································3

4.6功能狀態(tài)5（FS5）·································································································3

5供電電壓范圍···········································································································3

6功能類(lèi)別·················································································································4

7工作模式·················································································································5

8試驗(yàn)條件·················································································································5

8.1允差·················································································································5

8.2通用條件···········································································································5

8.3采樣率和數(shù)值分辨率····························································································5

8.4接口說(shuō)明···········································································································6

8.5試驗(yàn)樣品數(shù)········································································································6

8.6試驗(yàn)電壓···········································································································6

8.7試驗(yàn)流程···········································································································6

8.8參數(shù)檢查···········································································································6

8.9通過(guò)連續(xù)參數(shù)監(jiān)控進(jìn)行漂移分析·············································································7

8.10物理分析··········································································································7

9總體要求·················································································································7

9.1系統(tǒng)要求···········································································································7

9.2部件要求···········································································································7

10試驗(yàn)和要求············································································································8

10.1試驗(yàn)?01：標(biāo)稱(chēng)電壓范圍························································································8

10.2試驗(yàn)?02：低暫壓范圍和高暫壓范圍·········································································9

10.3試驗(yàn)?03：瞬時(shí)過(guò)電壓··························································································12

10.4試驗(yàn)?04：供電部件拋負(fù)載控制··············································································13

Ⅰ

GB/T45120—2024

10.5試驗(yàn)?05：?jiǎn)?dòng)特性·····························································································15

10.6試驗(yàn)?06：長(zhǎng)時(shí)過(guò)電壓··························································································16

10.7試驗(yàn)?07：可提供電能的耗能部件過(guò)電壓··································································17

10.8試驗(yàn)?08：供電電壓降低和升高··············································································20

10.9試驗(yàn)?09：電壓紋波·····························································································21

10.10試驗(yàn)?10：復(fù)位特性···························································································23

10.11試驗(yàn)?11：短時(shí)中斷供電·····················································································25

10.12試驗(yàn)?12：接地失效···························································································26

10.13試驗(yàn)?13：故障電流···························································································30

10.14試驗(yàn)?14：接地偏移···························································································31

10.15試驗(yàn)?15：信號(hào)線和負(fù)載電路短路·········································································33

10.16試驗(yàn)?16：靜態(tài)電流···························································································35

附錄A（資料性）功能狀態(tài)和功能類(lèi)別示例·······································································37

A.1功能狀態(tài)示例···································································································37

A.2功能類(lèi)別示例···································································································37

BCANGND38

附錄（資料性）通信48失效使用示例·······························································

B.1基本原理·········································································································38

B.2激活發(fā)送·········································································································39

Ⅱ

GB/T45120—2024

前言

本文件按照GB/T1.1—2020《標(biāo)準(zhǔn)化工作導(dǎo)則第1部分：標(biāo)準(zhǔn)化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)

定起草。

本文件修改采用ISO21780：2020《道路車(chē)輛48V供電電壓電氣要求及試驗(yàn)》。

本文件與ISO21780：2020相比做了下述結(jié)構(gòu)調(diào)整：

——3.2~3.11對(duì)應(yīng)ISO21780：2020中的3.3~3.12；

——?jiǎng)h除了ISO21780：2020中的8.5，并將后續(xù)條款號(hào)順次提前；

——將ISO21780：2020中9.1的內(nèi)容與第1章“范圍”合并，并將后續(xù)條款號(hào)順次提前；

——增加了10.12.1.1，并將后續(xù)條款號(hào)順延。

本文件與ISO21780：2020的技術(shù)差異及其原因如下：

——?jiǎng)h除了術(shù)語(yǔ)“火”及其定義（見(jiàn)ISO21780：2020的3.2）；

——更改了標(biāo)稱(chēng)電壓的定義，以適應(yīng)我國(guó)的技術(shù)條件（見(jiàn)3.6、3.7）；

——為了與試驗(yàn)方法保持一致，更改了“最高工作溫度”“最低工作溫度”“試驗(yàn)溫度”的定義，將

DUT溫度改為DUT所在環(huán)境溫度（見(jiàn)3.8、3.9、3.11）；

58V~60V58V<≤60V54V~58V54V<

——更改了各個(gè)供電電壓范圍，將改為U48，改為

≤58V52V~54V52V<≤54V36V~52V36V≤≤52V31V~

U48，改為U48，改為U48，

36V31V≤<36V24V~31V24V≤<31V0V~24V0V≤<

改為U48，改為U48，改為U48

24V，明確當(dāng)電壓處于邊界條件時(shí)電壓范圍的分類(lèi)（見(jiàn)第5章）；

——在表2的表頭功能類(lèi)別下方的功能類(lèi)別等級(jí)前增加FC，與功能類(lèi)別相對(duì)應(yīng)（見(jiàn)第6章）；

——?jiǎng)h除了試驗(yàn)限制條款（見(jiàn)ISO21780：2020的8.5），同時(shí)刪除了規(guī)范性引用的ISO/

IEC17025，我國(guó)對(duì)實(shí)驗(yàn)室及設(shè)備的要求有獨(dú)立的體系，不需要在本文件中額外規(guī)定；

——用規(guī)范性引用的GB/T20967替換了EN13018（見(jiàn)8.8、8.10），以適應(yīng)我國(guó)的技術(shù)條件，提高

可操作性；

910.4.4

——為了便于試驗(yàn)結(jié)果的判定，在表中增加了U0一行（見(jiàn)）；

GNDGND

——為了保證技術(shù)內(nèi)容一致性，在48失效試驗(yàn)的最后一步閉合開(kāi)關(guān)后及12/24失效試驗(yàn)斷

STNTNDUT

開(kāi)2后，將“監(jiān)控US、UB以及1和2之間的通信和電流”改為“監(jiān)控US、UB以及、

TNTN10.12.1.510.12.1.6

1和2之間的通信和電流”（見(jiàn)、）；

——用規(guī)范性引用的GB/T28046.2替換了ISO16750?2（見(jiàn)10.12.2.2），以適應(yīng)我國(guó)的技術(shù)條件，

提高可操作性；

——增加了接地偏移試驗(yàn)的試驗(yàn)時(shí)長(zhǎng)（見(jiàn)10.14.2），提高可操作性；

——將靜態(tài)電流試驗(yàn)的技術(shù)內(nèi)容改為不必都有喚醒階段，同時(shí)更改相應(yīng)的試驗(yàn)方法（見(jiàn)10.16），以

適用于各類(lèi)與48V電源連接且永久供電的部件。

本文件做了下列編輯性動(dòng)改：

——將ISO21780：2020中表2、表8、表12、表13、表17下方的條文注改為表注；

——將第7章注中“本文件不需要工作模式1、3”改為“本文件不需要工作模式1、3、4”，與

ISO16750?1：2023的技術(shù)內(nèi)容保持一致；

11

——調(diào)整了表中U0和U1的順序；

——調(diào)整了表16中駐留時(shí)間和頻率步長(zhǎng)的順序；

1812V/24V

——將圖中U12/24的說(shuō)明改為供電電壓，改正印刷錯(cuò)誤；

Ⅲ

GB/T45120—2024

DUTTNTN10.11.210.11.2

——將“、1和2之間的通信按的規(guī)定進(jìn)行工作和監(jiān)控”中的改為

10.12.2，改正印刷錯(cuò)誤（見(jiàn)10.12.1.4）；

B.1

——將圖中VCAN改為VCANH，改正印刷錯(cuò)誤。

請(qǐng)注意本文件的某些內(nèi)容可能涉及專(zhuān)利。本文件的發(fā)布機(jī)構(gòu)不承擔(dān)識(shí)別專(zhuān)利的責(zé)任。

本文件由中華人民共和國(guó)工業(yè)和信息化部提出。

本文件由全國(guó)汽車(chē)標(biāo)準(zhǔn)化技術(shù)委員會(huì)（SAC/TC114）歸口。

本文件起草單位：泛亞汽車(chē)技術(shù)中心有限公司、中國(guó)汽車(chē)技術(shù)研究中心有限公司、河南天海電器有

限公司、重慶長(zhǎng)安汽車(chē)股份有限公司、北京國(guó)家新能源汽車(chē)技術(shù)創(chuàng)新中心有限公司、威凱（上海）檢測(cè)技

術(shù)有限公司、上海法雷奧汽車(chē)電器系統(tǒng)有限公司、吉利汽車(chē)研究院（寧波）有限公司、中國(guó)電子技術(shù)標(biāo)準(zhǔn)

化研究院、徐州徐工汽車(chē)制造有限公司、東風(fēng)汽車(chē)有限公司東風(fēng)日產(chǎn)乘用車(chē)公司、中國(guó)重型汽車(chē)集團(tuán)有

限公司、長(zhǎng)城汽車(chē)股份有限公司、寧德時(shí)代新能源科技股份有限公司、上汽大眾汽車(chē)有限公司、上海電

器設(shè)備檢測(cè)所有限公司、中國(guó)汽車(chē)工程研究院股份有限公司、阿美特克商貿(mào)（上海）有限公司北京分公

司、北京汽車(chē)研究總院有限公司、深圳市航盛電子股份有限公司、中車(chē)時(shí)代電動(dòng)汽車(chē)股份有限公司、安

徽江淮汽車(chē)集團(tuán)股份有限公司、上汽通用五菱汽車(chē)股份有限公司、襄陽(yáng)達(dá)安汽車(chē)檢測(cè)中心有限公司、廣

州汽車(chē)集團(tuán)股份有限公司、北京車(chē)和家汽車(chē)科技有限公司、東風(fēng)柳州汽車(chē)有限公司、一汽?大眾汽車(chē)有

限公司、北京索德電氣工業(yè)有限公司、中國(guó)電器科學(xué)研究院股份有限公司。

本文件主要起草人：錢(qián)慧杰、文清浩、郭得歲、張文青、吳倩、黃凱兵、沈黎吉、朱宏斌、徐殿、周小貞、

王沖、崔強(qiáng)、錢(qián)寶存、鄭廣州、張旺威、王龍、路志強(qiáng)、劉勝東、楊國(guó)樑、陳穎、張樂(lè)敏、楊加淇、杜全輝、

段永亮、張輝、趙陽(yáng)、李偉聰、雷波、邵杰、譚功偉、陳文慶、劉永彬、展新、李育方、楊文輝、宋朋宇、華旸、

高一盼。

Ⅳ

GB/T45120—2024

道路車(chē)輛48V供電電壓

電氣要求及試驗(yàn)

1范圍

本文件規(guī)定了道路車(chē)輛中標(biāo)稱(chēng)電壓為直流48V的電氣和電子部件的電氣要求