CN109669120A - A kind of battery system relay adhesion detection circuit - Google Patents
A kind of battery system relay adhesion detection circuit Download PDFInfo
- Publication number
- CN109669120A CN109669120A CN201910043530.7A CN201910043530A CN109669120A CN 109669120 A CN109669120 A CN 109669120A CN 201910043530 A CN201910043530 A CN 201910043530A CN 109669120 A CN109669120 A CN 109669120A
- Authority
- CN
- China
- Prior art keywords
- divider resistance
- relay
- resistance
- detection
- connects
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 90
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000005611 electricity Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3275—Fault detection or status indication
Abstract
The invention discloses a kind of battery system relay adhesion detection circuit, including power supply, the positive B+ of power supply connects with divider resistance R1 and main positive relay K1 respectively；Main positive relay K1 connects with the anode of divider resistance R3 and load end equivalent circuit respectively；Divider resistance R1 connects one end of divider resistance R2 and the cathode of load end equivalent circuit respectively；Divider resistance R2 meets the cathode B- and main negative relay K2 of power supply respectively；Main negative relay K2 connects with the connecting path between divider resistance R1 and the cathode of load end equivalent circuit；Divider resistance R3 connects with divider resistance R4；Divider resistance R4 meets the cathode B- and main negative relay K2 of power supply respectively.The present invention can accurately and reliably in the high tension loop of electric vehicle battery system relay carry out adhesion detection, judge relay whether adhesion.
Description
Technical field
The present invention relates to new energy electronic technology fields, detect electricity more particularly to a kind of battery system relay adhesion
Road.
Background technique
Currently, China's new-energy automobile industry is grown rapidly, battery system is the power resources of new-energy automobile, is run over
Zero-emission is its great advantage in journey, therefore has obtained vigorously supporting for country.
However, since the technological accumulation time is relatively short, the problem of many electric car secure contexts, is received increasingly
More concerns.Electric vehicle battery system generally comprises multiple high tension loops, including discharge loop, charge circuit, heating circuit
Deng, these relay in high voltage loop whether can reliably working, be directly related to electric car itself and autoist
Safety.As shown in FIG. 1, FIG. 1 is the typical high tension loop of electric car, which includes power supply (positive pole B+, power supply
Cathode B-), main positive relay K1, main negative relay K2, and the load equivalent circuit composed in parallel by capacitor C0 and resistance R0,
Wherein load equivalent circuit in practical applications, can indicate motor, can also indicate the charging pile used during the charging process
Interior voltage detecting circuit.HV+ and HV- respectively indicates the anode and cathode of load equivalent circuit
Wherein, when high current closure occurs in the relay in the high tension loop of electric vehicle battery system or cuts off feelings with carrying
When condition, relay is likely to result in safety accident it is possible that adhesion fault (i.e. the contact adhesion of relay).Therefore, it needs
Will to relay whether adhesion, regularly detected, relay adhesion detection has become battery management system (Battery
Management System, BMS) an indispensable function.
But there is presently no a kind of technologies, it can be accurately and reliably to the high tension loop of electric vehicle battery system
In relay carry out adhesion detection, judge relay whether adhesion, to ensure the safe handling of electric vehicle battery system.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of battery system relay adhesion detection circuit, it can be accurate
Reliably in the high tension loop of electric vehicle battery system relay carry out adhesion detection, judge relay whether adhesion,
To ensure the safe handling of electric vehicle battery system, is conducive to widely apply, be of great practical significance.
For this purpose, the present invention provides a kind of battery system relay adhesion detection circuit, including power supply B, the power supply B's
Positive B+ connects with one end of one end of divider resistance R1 and main positive relay K1 respectively；
The other end of the positive relay K1 of master respectively with one end of divider resistance R3 and an equivalent electricity of load end
The positive HV+ on road connects；
The other end of the divider resistance R1 connects one end of divider resistance R2 and the cathode of load end equivalent circuit respectively
HV-；
The other end of the divider resistance R2 connects one end of the cathode B- and main negative relay K2 of the power supply B respectively；
Between the other end and the divider resistance R1 and the cathode HV- of load equivalent circuit of the negative relay K2 of master
Connecting path connects；
The other end of the divider resistance R3 connects with one end of a divider resistance R4；
The other end of the divider resistance R4 connects one end of the cathode B- and main negative relay K2 of the power supply B respectively.
Wherein, it is made of the divider resistance R1 and divider resistance R2 for carrying out adhesion detection to the negative relay K2 of master
First detection branch；It is made of the divider resistance R3 and divider resistance R4 for carrying out adhesion detection to the positive relay K1 of master
Second detection branch.
Wherein, the power supply is the battery pack formed of being connected by multiple batteries.
Wherein, the load end equivalent circuit is the load end equivalent circuit composed in parallel by capacitor C0 and resistance R0.
Wherein, the resistance value of the divider resistance R2 is less than the resistance value of divider resistance R1, and the resistance value of the divider resistance R4 is small
In the resistance value of divider resistance R3.
By the above technical solution provided by the invention as it can be seen that the present invention provides a kind of battery system relay adhesion detections
Circuit accurately and reliably can carry out adhesion detection, judgement to the relay in the high tension loop of electric vehicle battery system
Whether adhesion is conducive to widely apply relay to ensure the safe handling of electric vehicle battery system, has great
Production practices meaning.
In addition, voltage of the present invention detected by load end is low (being, for example, less than 5V), it is not only highly-safe, but also effectively
Overcoming existing detection means influences defect and the erroneous judgement battery system of personal safety on the detection overtension of load end
The defect that system breaks down more has practicability.
Detailed description of the invention
Fig. 1 is a kind of existing circuit diagram of electric automobile high-voltage major loop；
Fig. 2 is a kind of circuit diagram of battery system relay adhesion detection circuit provided by the invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawing with embodiment to this
Invention is described in further detail.
Fig. 2 is a kind of circuit diagram of battery system relay adhesion detection circuit provided by the invention.
Referring to fig. 2, the present invention provides a kind of battery system relay adhesion detection circuit, including power supply B, the power supplys
The positive B+ of B connects with one end of one end of divider resistance R1 and main positive relay K1 respectively；
The other end of the positive relay K1 of master respectively with one end of divider resistance R3 and an equivalent electricity of load end
The positive HV+ on road connects；
The other end of the divider resistance R1 connects one end of divider resistance R2 and the cathode of load end equivalent circuit respectively
HV-；
The other end of the divider resistance R2 connects one end of the cathode B- and main negative relay K2 of the power supply B respectively；
Between the other end and the divider resistance R1 and the cathode HV- of load end equivalent circuit of the negative relay K2 of master
Connecting path connect；
The other end of the divider resistance R3 connects with one end of a divider resistance R4；
The other end of the divider resistance R4 connects one end of the cathode B- and main negative relay K2 of the power supply B respectively；
In the present invention, it in specific implementation, is made of the divider resistance R1 and divider resistance R2 for the negative relay of master
First detection branch of device K2 progress adhesion detection；It is made of the divider resistance R3 and divider resistance R4 for the positive relay of master
Second detection branch of device K1 progress adhesion detection.
In the present invention, in specific implementation, the power supply can be the battery pack formed of being connected by multiple batteries.
In the present invention, in specific implementation, the load equivalent circuit be composed in parallel by capacitor C0 and resistance R0 it is negative
Carry equivalent circuit.
In the present invention, in specific implementation, resistance value of the resistance value less than divider resistance R1 of the divider resistance R2, described point
The resistance value of piezoresistance R4 is less than the resistance value of divider resistance R3.
It should be noted that the present invention is by the voltage at the both ends detection resistance R2 and R4, to judge whether relay glues
Even, general common voltage detecting circuit or the reference voltage detection of voltage detection module are smaller (representative value is 0V~5V), because
This relay K2 negative to master carries out the proportionate relationship of resistance R1 and R2 in the first detection branch of adhesion detection, it is ensured that resistance R2
The voltage at both ends is within the voltage rating detection range of voltage detecting circuit or voltage detection module, and to the positive relay K1 of master
The proportionate relationship for carrying out resistance R3 and R4 in the second detection branch of adhesion detection, will also guarantee the voltage at the both ends resistance R4 in electricity
Within the voltage rating detection range for pressing detection circuit or voltage detection module.
It should be noted that for battery system relay adhesion detection circuit provided by the invention, to the negative relay of master
The working principle of device K2 progress adhesion detection are as follows: in the case where the positive relay K1 of master and main negative relay K2 are disconnected, pass through conjunction
The proportionate relationship of divider resistance R1 and R2 (guarantee the voltage at the both ends resistance R2 in voltage detecting electricity in reason the first detection branch of setting
Within the voltage rating detection range of road or voltage detection module), the both ends resistance R2 can detecte (general pre- to a low-voltage
If threshold value is arranged between 0V~5V, specific value is according to the voltage detecting circuit at the both ends resistance R2 or the volume of voltage detection module
Constant voltage detection range is determined), i.e., when the voltage at the both ends resistance R2 is higher than preset threshold, then judge that leading negative relay K2 does not have
There is adhesion；If resistance R2 both end voltage is lower than preset threshold, illustrate that electric current passes sequentially through the first inspection by positive pole B+
Survey after divider resistance R1, the main negative relay K2 of branch and return to power cathode B-, the voltage at the both ends divider resistance R2 be 0V or
One value close to 0V, to judge that leading negative relay K2 adhesion fault occurs.
For battery system relay adhesion detection circuit provided by the invention, relay K1 positive to master carries out adhesion inspection
The working principle of survey are as follows: in the case where the positive relay K1 of master and main negative relay K2 are disconnected, electric current by positive pole B+ successively
By in the load end equivalent circuit of divider resistance R1, R0 and capacitor C0 composition in the first detection branch, the second detection branch
Divider resistance R3, the second detection branch divider resistance R4 after, return to power cathode B-, by partial pressure after, second detection branch
The voltage at the both ends divider resistance R4 on road is 0V or adhesion does not occur close to 0V, the i.e. main positive relay K1 of judgement；If master is just
Relay K1 adhesion, electric current are passed sequentially through the divider resistance R3 of the second detection branch, the second detection branch by positive pole B+
Power cathode B- is returned to after divider resistance R4, by the proportionate relationship that divider resistance R3 and R4 in the second detection branch is rationally arranged
(guaranteeing the voltage at the both ends resistance R4 within the voltage rating detection range of voltage detecting circuit or voltage detection module), resistance
The both ends R4 can detecte that (general preset threshold is arranged between 0V~5V, and specific value is according to resistance R4 two to low-voltage
The voltage rating detection range of the voltage detecting circuit at end or voltage detection module is determined), i.e., when resistance R4 both end voltage is higher than
When preset threshold, then judge that leading positive relay K1 adhesion fault occurs.
It should be noted that sentence for relay adhesion detection circuit provided by the invention, the relay that breaks whether adhesion
Operating procedure can be summarized as follows:
1, the both ends of divider resistance R2, which can detecte to one, when main negative relay K2 is disconnected, in the first detection branch is higher than
(general preset threshold is arranged between 0V~5V the voltage of preset threshold, and specific value can be examined according to resistance R2 both end voltage
The voltage rating detection range of slowdown monitoring circuit or voltage detection module is determined)；When there is adhesion fault in main negative relay K2, partial pressure electricity
The voltage that detects of the resistance both ends R2 is 0V or close to 0V.
2, when main positive relay K1 is disconnected, the voltage at the both ends divider resistance R4 is 0V or close to 0V in the second detection branch；
When adhesion fault occurs in main positive relay K1, it is (general pre- that the both ends resistance R4 can detecte the voltage for being higher than preset threshold to one
If threshold value is arranged between 0V~5V, specific value is according to the voltage detecting circuit at the both ends resistance R4 or the volume of voltage detection module
Constant voltage detection range is determined).
It should be noted that the battery system of electric car generally before vehicle powers on or charges, carries out relay
Adhesion detection, in the case where there is not adhesion in the positive relay K1 of master and main negative relay K2, electric current by positive pole B+ successively
Point of the load end equivalent circuit, the second detection branch that are made up of divider resistance R1, R0 and capacitor C0 of the first detection branch
Piezoresistance R3, the second detection branch divider resistance R4 after return to power cathode B-, through partial pressure back loading equivalent circuit both ends
Voltage between HV+, HV- is lower than predetermined voltage threshold (the general preset threshold at the both ends divider resistance R2 in the first detection branch
It is arranged between 0V~5V, specific value is examined according to the voltage rating of resistance R2 both end voltage detection circuit or voltage detection module
Range is surveyed to determine).
Compared with existing detection means, for battery system relay adhesion detection circuit provided by the invention, gram
Existing detection means has been taken the shortcomings that load end detects high pressure, will not have been threatened to personal safety, it will not be due to filling
Electric stake detects that high pressure reports charge fault and influences charging process before charging.
It should be noted that carrying out the method for relay adhesion detection in load end for existing detection means
Can detecte very high voltage, there are personnel get an electric shock risk, and during the charging process charging pile detect charge port have compared with
High voltage judges to be stopped charging for failure, to have more limitation, compared with prior art, this hair on measuring points placement
For the relay adhesion detection circuit of bright offer after the resistance value of reasonable disposition divider resistance, the voltage that load end detects can be small
In 5V, the shortcomings that conventionally employed bleeder circuit carries out relay adhesion detection circuit is overcome, in the arrangement of test point more
Flexibly, detection circuit cost can be effectively reduced, improve the flexibility and economy of detection circuit in practical applications.
For relay adhesion detection circuit provided by the invention, adhesion detection is carried out to the relay in battery system
When, accurate, reliable, the fireballing advantage of adhesion detection mode, at the same it is low in the voltage that load end detects, overcome existing inspection
For survey means the shortcomings that load end detects high pressure, safety is good.
By the above technical solution provided by the invention as it can be seen that the present invention provides a kind of battery system relay adhesion detections
Circuit accurately and reliably can carry out adhesion detection, judgement to the relay in the high tension loop of electric vehicle battery system
Whether adhesion is conducive to widely apply relay to ensure the safe handling of electric vehicle battery system, has great
Production practices meaning.
In addition, voltage of the present invention detected by load end is low (being, for example, less than 5V), it is not only highly-safe, but also effectively
Overcoming existing detection means influences defect and the erroneous judgement battery system of personal safety on the detection overtension of load end
The defect that system breaks down more has practicability.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of battery system relay adhesion detection circuit, which is characterized in that including power supply B, positive B+ points of the power supply B
Do not connect with one end of one end of divider resistance R1 and main positive relay K1；
The other end of the positive relay K1 of master respectively with one end of divider resistance R3 and load end equivalent circuit
Positive HV+ connects；
The other end of the divider resistance R1 connects one end of divider resistance R2 and the cathode HV- of load end equivalent circuit respectively；
The other end of the divider resistance R2 connects one end of the cathode B- and main negative relay K2 of the power supply B respectively；
Company between the other end and the divider resistance R1 and the cathode HV- of load end equivalent circuit of the negative relay K2 of master
Road is connected to connect；
The other end of the divider resistance R3 connects with one end of a divider resistance R4；
The other end of the divider resistance R4 connects one end of the cathode B- and main negative relay K2 of the power supply B respectively.
2. circuit as described in claim 1, which is characterized in that by the divider resistance R1 and divider resistance R2 form for pair
Main negative relay K2 carries out the first detection branch of adhesion detection；By the divider resistance R3 and divider resistance R4 form for pair
Main positive relay K1 carries out the second detection branch of adhesion detection.
3. circuit as described in claim 1, which is characterized in that the power supply is the battery pack formed of being connected by multiple batteries.
4. circuit as described in claim 1, which is characterized in that the load end equivalent circuit be by capacitor C0 and resistance R0 simultaneously
Join the load end equivalent circuit of composition.
5. circuit as described in claim 1, which is characterized in that the resistance value of the divider resistance R2 is less than the resistance of divider resistance R1
Value, the resistance value of the divider resistance R4 are less than the resistance value of divider resistance R3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910043530.7A CN109669120A (en) | 2019-01-17 | 2019-01-17 | A kind of battery system relay adhesion detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910043530.7A CN109669120A (en) | 2019-01-17 | 2019-01-17 | A kind of battery system relay adhesion detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109669120A true CN109669120A (en) | 2019-04-23 |
Family
ID=66150692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910043530.7A Pending CN109669120A (en) | 2019-01-17 | 2019-01-17 | A kind of battery system relay adhesion detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109669120A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261766A (en) * | 2019-06-13 | 2019-09-20 | 奇瑞汽车股份有限公司 | Relay is adhered observation circuit and monitoring method |
| CN110470981A (en) * | 2019-07-26 | 2019-11-19 | 东软睿驰汽车技术（沈阳）有限公司 | A kind of circuit of determining contactor state, method and device |
| CN110514988A (en) * | 2019-08-05 | 2019-11-29 | 北京长城华冠汽车科技股份有限公司 | Relay fault detection method, device, electric vehicle |
| CN110888050A (en) * | 2019-11-12 | 2020-03-17 | 东风汽车有限公司 | Relay adhesion detection device and vehicle |
| CN111337822A (en) * | 2020-03-20 | 2020-06-26 | 威睿电动汽车技术(宁波)有限公司 | Relay adhesion detection circuit and main and negative relay adhesion detection method |
| CN112034333A (en) * | 2020-07-28 | 2020-12-04 | 北汽福田汽车股份有限公司 | High-voltage relay diagnosis method and device |
| CN112557893A (en) * | 2020-12-02 | 2021-03-26 | 深圳英飞源技术有限公司 | Relay adhesion detection circuit and method and battery management system |
| CN112578273A (en) * | 2019-09-30 | 2021-03-30 | 江苏万帮德和新能源科技股份有限公司 | Adhesion detection device and method for alternating current circuit relay and alternating current charging pile |
| CN113109703A (en) * | 2021-04-07 | 2021-07-13 | 江苏开沃汽车有限公司 | Circuit for monitoring adhesion of high-voltage relay and working method thereof |
| CN114217216A (en) * | 2021-11-30 | 2022-03-22 | 上海瑞浦青创新能源有限公司 | Relay detection circuit and detection method and system thereof |
| WO2022082526A1 (en) * | 2020-10-21 | 2022-04-28 | 深圳欣锐科技股份有限公司 | Main negative relay detection system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676117A (en) * | 2014-11-17 | 2016-06-15 | 上海海拉电子有限公司 | Relay fault detection circuit and detection method thereof |
| CN106338688A (en) * | 2016-08-24 | 2017-01-18 | 深圳市科列技术股份有限公司 | Vehicle battery management system main relay adhesion detection circuit and detection method thereof |
| CN106707152A (en) * | 2016-12-20 | 2017-05-24 | 东莞钜威动力技术有限公司 | Adhesion detection circuit and adhesion detection method for electric automobile power relay |
| CN107942243A (en) * | 2017-11-09 | 2018-04-20 | 上汽通用五菱汽车股份有限公司 | Relay adhesion detection circuit and detection method |
| CN207924092U (en) * | 2018-02-01 | 2018-09-28 | 宁波吉利汽车研究开发有限公司 | A kind of relay bonding fault detection circuit of battery management system |
| EP3404432A1 (en) * | 2017-04-26 | 2018-11-21 | Contemporary Amperex Technology Co., Limited | Method and system for detecting relay adhesion |
| CN209707656U (en) * | 2019-01-17 | 2019-11-29 | 力神动力电池系统有限公司 | A kind of battery system relay adhesion detection circuit |
-
2019
- 2019-01-17 CN CN201910043530.7A patent/CN109669120A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676117A (en) * | 2014-11-17 | 2016-06-15 | 上海海拉电子有限公司 | Relay fault detection circuit and detection method thereof |
| CN106338688A (en) * | 2016-08-24 | 2017-01-18 | 深圳市科列技术股份有限公司 | Vehicle battery management system main relay adhesion detection circuit and detection method thereof |
| CN106707152A (en) * | 2016-12-20 | 2017-05-24 | 东莞钜威动力技术有限公司 | Adhesion detection circuit and adhesion detection method for electric automobile power relay |
| EP3404432A1 (en) * | 2017-04-26 | 2018-11-21 | Contemporary Amperex Technology Co., Limited | Method and system for detecting relay adhesion |
| CN107942243A (en) * | 2017-11-09 | 2018-04-20 | 上汽通用五菱汽车股份有限公司 | Relay adhesion detection circuit and detection method |
| CN207924092U (en) * | 2018-02-01 | 2018-09-28 | 宁波吉利汽车研究开发有限公司 | A kind of relay bonding fault detection circuit of battery management system |
| CN209707656U (en) * | 2019-01-17 | 2019-11-29 | 力神动力电池系统有限公司 | A kind of battery system relay adhesion detection circuit |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261766A (en) * | 2019-06-13 | 2019-09-20 | 奇瑞汽车股份有限公司 | Relay is adhered observation circuit and monitoring method |
| CN110470981A (en) * | 2019-07-26 | 2019-11-19 | 东软睿驰汽车技术（沈阳）有限公司 | A kind of circuit of determining contactor state, method and device |
| CN110514988A (en) * | 2019-08-05 | 2019-11-29 | 北京长城华冠汽车科技股份有限公司 | Relay fault detection method, device, electric vehicle |
| CN112578273A (en) * | 2019-09-30 | 2021-03-30 | 江苏万帮德和新能源科技股份有限公司 | Adhesion detection device and method for alternating current circuit relay and alternating current charging pile |
| CN110888050A (en) * | 2019-11-12 | 2020-03-17 | 东风汽车有限公司 | Relay adhesion detection device and vehicle |
| CN111337822A (en) * | 2020-03-20 | 2020-06-26 | 威睿电动汽车技术(宁波)有限公司 | Relay adhesion detection circuit and main and negative relay adhesion detection method |
| CN112034333A (en) * | 2020-07-28 | 2020-12-04 | 北汽福田汽车股份有限公司 | High-voltage relay diagnosis method and device |
| WO2022082526A1 (en) * | 2020-10-21 | 2022-04-28 | 深圳欣锐科技股份有限公司 | Main negative relay detection system |
| CN112557893A (en) * | 2020-12-02 | 2021-03-26 | 深圳英飞源技术有限公司 | Relay adhesion detection circuit and method and battery management system |
| CN113109703A (en) * | 2021-04-07 | 2021-07-13 | 江苏开沃汽车有限公司 | Circuit for monitoring adhesion of high-voltage relay and working method thereof |
| CN114217216A (en) * | 2021-11-30 | 2022-03-22 | 上海瑞浦青创新能源有限公司 | Relay detection circuit and detection method and system thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109669120A (en) | A kind of battery system relay adhesion detection circuit | |
| CN105711434B (en) | A kind of electric automobile power battery management system | |
| CN107064638A (en) | A kind of insulation resistance detection device and method based on injection periodic time self-adapting strategy | |
| CN112373320B (en) | BMS-based electric vehicle charging power-on control system and control method thereof | |
| CN102393489B (en) | On-line monitoring control method of electric car power cell high voltage loop resistor and apparatus thereof | |
| CN207488463U (en) | A kind of battery system off-line detection system | |
| CN103576046A (en) | Storage battery system having storage battery protector and diagnostic device, and diagnostic method thereof | |
| CN112666431B (en) | Full-state insulation detection control method for direct-current high-voltage system of electric vehicle | |
| CN102667513A (en) | Abnormality detection device for assembled battery | |
| CN206710509U (en) | A kind of insulation resistance of DC system observation circuit and system | |
| CN105620304B (en) | Battery pack thermal run away monitoring device and electric automobile | |
| CN206479582U (en) | A kind of hybrid vehicle insulation detecting circuit | |
| CN107422185A (en) | A kind of insulation resistance of DC system observation circuit, system and method | |
| CN105548908B (en) | A kind of internal resistance consistency detecting method of power battery pack | |
| CN209290181U (en) | High-voltage interlocking detection device and vehicle | |
| CN110346682B (en) | Output connection state detection circuit and method for DCDC converter of electric vehicle | |
| CN205941816U (en) | Detect circuit of high -pressure contactor contact state | |
| CN209707656U (en) | A kind of battery system relay adhesion detection circuit | |
| KR101189582B1 (en) | Voltage sensing system for detecting disconnection of voltage sensing line of battery | |
| CN108521155A (en) | A kind of electric vehicle charging method for early warning and system | |
| CN107490767A (en) | Insulation detecting method, system and the vehicle of battery bag | |
| CN109116227A (en) | A kind of the main relay detection circuit and detection method of battery management system | |
| CN108931686A (en) | A kind of battery system total voltage is under-voltage detection method, device, equipment and automobile | |
| CN104882947A (en) | Electric vehicle alternating-current charging mode-I control device and control method | |
| CN106314189A (en) | Charge-discharge circuit and automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220124 Address after: 266500 Minshan Road, Huangdao District, Qingdao, Shandong Applicant after: LISHEN (QINGDAO) NEW ENERGY CO.,LTD. Address before: 300384 Tianjin Xiqing District Binhai new and high technology Industrial Development Zone Huayuan Technology Park (outside the ring) Hai Tai Nan Road No. 38. Applicant before: LISHEN POWER BATTERY SYSTEMS Co.,Ltd. |