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1. WO2020135703 - INSULATION DETECTION SYSTEM BASED ON FULL-BRIDGE INSULATION DETECTION CIRCUIT AND ELECTRIC AUTOMOBILE

Publication Number WO/2020/135703
Publication Date 02.07.2020
International Application No. PCT/CN2019/129155
International Filing Date 27.12.2019
IPC
B60L 58/10 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
58Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
10for monitoring or controlling batteries
G01R 31/14 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
12Testing dielectric strength or breakdown voltage
14Circuits therefor
CPC
B60L 3/00
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
3Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
B60L 58/10
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
58Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
10for monitoring or controlling batteries
G01R 31/00
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
G01R 31/14
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
12Testing dielectric strength or breakdown voltage ; ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
14Circuits therefor ; , e.g. for generating test voltages, sensing circuits
G01R 31/52
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
52Testing for short-circuits, leakage current or ground faults
Y02T 10/70
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
10Road transport of goods or passengers
60Other road transportation technologies with climate change mitigation effect
70Energy storage systems for electromobility, e.g. batteries
Applicants
  • 蜂巢能源科技有限公司 SVOLT ENERGY TECHNOLOGY CO., LTD [CN]/[CN]
Inventors
  • 颜广博 YAN, Guangbo
  • 赵甫 ZHAO, Fu
Agents
  • 北京润平知识产权代理有限公司 RUNPING & PARTNERS
Priority Data
201811636686.829.12.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) INSULATION DETECTION SYSTEM BASED ON FULL-BRIDGE INSULATION DETECTION CIRCUIT AND ELECTRIC AUTOMOBILE
(FR) SYSTÈME DE DÉTECTION D'ISOLATION REPOSANT SUR UN CIRCUIT DE DÉTECTION D'ISOLATION EN PONT COMPLET ET VÉHICULE AUTOMOBILE ÉLECTRIQUE
(ZH) 基于全桥绝缘检测电路的绝缘检测系统及电动汽车
Abstract
(EN)
An insulation detection system based on a full-bridge insulation detection circuit and an electric automobile, the insulation detection system comprising a first sampling resistor (R1), a second voltage division resistor (Rb), a third voltage division resistor (Rc), a second sampling resistor (R2), a third sampling resistor (R3), a first switch (K1), a second switch (K2) and a third switch (K3); and a processor, used for controlling the first switch (K1), the second switch (K2) and/or the third switch (K3) to be turned on and off multiple times so as to acquire the voltage of the first sampling resistor (R1) and the second sampling resistor (R2) multiple times, confirm a function relational expression of a first insulation resistor (Rp) and a second insulation resistor (Rn) multiple times and calculate the first insulation resistor (Rp) and the second insulation resistor (Rn) according to the function relational expression confirmed multiple times. With the insulation detection system based on the full-bridge insulation detection circuit and the electric automobile in the present solution, an insulation detection period may be shortened, detection accuracy is improved, and cost is reduced.
(FR)
La présente invention concerne un système de détection d'isolation reposant sur un circuit de détection d'isolation en pont complet et un véhicule automobile électrique, le système de détection d'isolation comprenant une première résistance d'échantillonnage (R1), une deuxième résistance de division de tension (Rb), une troisième résistance de division de tension (Rc), une deuxième résistance d'échantillonnage (R2), une troisième résistance d'échantillonnage (R3), un premier commutateur (K1), un deuxième commutateur (K2) et un troisième commutateur (K3) ; et un processeur, utilisé pour commander le premier commutateur (K1), le deuxième commutateur (K2) et/ou le troisième commutateur (K3) pour leur allumage et leur extinction de multiples fois de manière à acquérir la tension de la première résistance d'échantillonnage (R1) et de la deuxième résistance d'échantillonnage (R2) de multiples fois, à confirmer une expression relationnelle de fonction d'une première résistance d'isolation (Rp) et d'une deuxième résistance d'isolation (Rn) de multiples fois et à calculer la première résistance d'isolation (Rp) et la deuxième résistance d'isolation (Rn) en fonction de l'expression relationnelle de fonction confirmée de multiples fois. À l'aide du système de détection d'isolation reposant sur le circuit de détection d'isolation en pont complet et le véhicule automobile électrique dans la présente solution, une période de détection d'isolation peut être raccourcie, une précision de détection est améliorée et les coûts sont réduits.
(ZH)
一种基于全桥绝缘检测电路的绝缘检测系统及电动汽车,所述绝缘检测系统包括第一采样电阻(R1)、第二分压电阻(Rb)、第三分压电阻(Rc)、第二采样电阻(R2)、第三采样电阻(R3)、第一开关(K1)、第二开关(K2)以及第三开关(K3);以及处理器,用于多次控制所述第一开关(K1)、所述第二开关(K2)和/或所述第三开关(K3)的闭合和断开,以多次采集所述第一采样电阻(R1)和所述第二采样电阻(R2)的电压,从而多次确定第一绝缘电阻(Rp)和第二绝缘电阻(Rn)的函数关系式以根据所多次确定的函数关系式计算所述第一绝缘电阻(Rp)和所述第二绝缘电阻(Rn)。本方案所述的基于全桥绝缘检测电路的绝缘检测系统及电动汽车可以缩短绝缘检测周期,提高检测精度并降低了成本。
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