CN108267686A - The relay adhesion detection method of battery pack system - Google Patents
The relay adhesion detection method of battery pack system Download PDFInfo
- Publication number
- CN108267686A CN108267686A CN201611269853.0A CN201611269853A CN108267686A CN 108267686 A CN108267686 A CN 108267686A CN 201611269853 A CN201611269853 A CN 201611269853A CN 108267686 A CN108267686 A CN 108267686A
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- Prior art keywords
- relay
- contact
- battery module
- pack system
- battery pack
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- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of relay adhesion detection methods of battery pack system, include contact a and contact b including battery module A, relay SW1 and relay SW2, the relay SW1, the anode of the battery module A is connect with the contact a of relay SW1；The relay SW2 includes contact c and contact d, and the cathode of the battery module A is connect with the contact c of relay SW2；And including three steps；It can accurately judge whether the corresponding relay of battery module sticks together under the premise of any one relay is not closed, and the safety of battery pack system can be increased by two kinds of judgment modes come the accuracy of verification result.
Description
Technical field
The present invention relates to a kind of relay adhesion detection methods of battery pack system.
Background technology
Battery module, BMU, BMS, various relays and fuse, battery pack is generally included in battery pack system circuit to lead to
Cross various relay connections.When needing to provide electric energy to vehicle, BMS controls corresponding relay to be closed so that battery pack connects
Enter power supply circuit；When not needing to energize to vehicle, BMS controls corresponding relay to disconnect so that battery pack and power supply circuit
It disconnects.
But since relay is in the long-term course of work, relay needs the folding by thousands of times, and
The heat and electric arc that relay contact generates be easy to cause relay contact and generate adhesion, so as to which the control in battery pack circuit be caused to lose
Effect, adversely affects the stability of battery pack system.
Invention content
The present invention provides a kind of relay adhesion detection method of battery pack system, including battery module A, relay
SW1 and relay SW2, it is characterised in that：The relay SW1 include contact a and contact b, the anode of the battery module A with
The contact a connections of relay SW1；The relay SW2 includes contact c and contact d, the cathode and relay of the battery module A
The contact c connections of device SW2；And include the following steps：
Step 1：Disconnect relay SW1 and relay SW2；
Step 2：The detection voltage of battery module A is set as V1；The contact b of relay SW1 and relay SW2 is touched
Detection voltage between point c is set as V2；Detection voltage between the contact a of relay SW1 and relay SW2 contact d is set
It is set to V3；
Step 3：If V1 ≈ V2, judge that SW1 sticks together；If V1 ≈ V3, judge that SW2 sticks together.
Wherein, V1 ≈ V2 refer to that " difference between V1 and V2 " and the ratio of " V1 and higher value in V2 " are less than or equal to
10%；V1 ≈ V3 refer to that " difference between V1 and V3 " and the ratio of " higher value in V1 and V3 " are less than or equal to 10%.
In battery pack system, access power supply electricity after anode, the cathode of battery module A are connected respectively with relay SW1, SW2
Road, relay can control whether battery module A connect with power supply circuit.
The present invention does not limit the quantity of battery module in battery pack system, before the equal series relay of each battery module
It puts, the adhesion detection of related relay can be just completed according to method provided by the present invention.
As one embodiment of the present invention, the contact b of battery module B, the relay SW1 and battery mould are further included
The anode connection of block B, the contact d of the relay SW2 is connect with the cathode of battery module B, by the detection voltage of battery module B
It is set as V4；If V3 ≈ V4, judge that SW1 sticks together.Wherein, V3 ≈ V4 refer to " difference between V3 and V4 " with " V3 with
The ratio of higher value in V4 " is less than or equal to 10%.
In the case where battery pack system further includes battery module B, the anode of the contact b and battery module B of relay SW1
Connection, the contact d of relay SW2 are connect with the cathode of battery module B, and the detection voltage of battery module B is set as V4；If V3
≈ V4 then judge that SW1 sticks together.It, can be more accurate for the SW1 judgements whether to stick together with step 5 collective effect.
As one embodiment of the present invention, the contact b of battery module B, the relay SW1 and battery mould are further included
The anode connection of block B, the contact d of the relay SW2 is connect with the cathode of battery module B, by the detection voltage of battery module B
It is set as V4；If V2 ≈ V4, judge that SW2 sticks together.Wherein, V2 ≈ V4 refer to " difference between V2 and V4 " with " V2 with
The ratio of higher value in V4 " is less than or equal to 10%.
In the case where battery pack system further includes battery module B, the anode of the contact b and battery module B of relay SW1
Connection, the contact d of relay SW2 are connect with the cathode of battery module B, and the detection voltage of battery module B is set as V4；If V2
≈ V4 then judge that SW2 sticks together.It, can be more accurate for the SW2 judgements whether to stick together with step 6 collective effect.
As one embodiment of the present invention, the anode of battery module B, the battery module A and battery mould are further included
Series relay SW3 between the cathode of block B；Relay SW3 is disconnected, if V2 ≈ V1+V4, judge that SW3 sticks together.Wherein,
V2 ≈ V1+V4 refer to that " difference between V2 and V1+V4 " and the ratio of " higher value in V2 and V1+V4 " are less than or equal to 10%.
Series relay SW3 between the anode of battery module A and the cathode of battery module B so that battery module A and battery
Connection relation between module B can be changed by the folding of relay SW3.
As one embodiment of the present invention, if V1 ≈ V2 ≈ V3, judge that SW1 and SW2 stick together.
If V1 ≈ V2 ≈ V3, judge that SW1 and SW2 stick together；With Step 5: step 6 collective effect, for SW1 and
The judgement whether SW2 sticks together can be more accurate.
It, can be accurate under the premise of any one relay is not closed after having used technical solution provided by the invention
Really judge whether the corresponding relay of battery module sticks together, avoid passing through high pressure caused by being closed some relay
Improper output, so as to cause the generation of unsafe condition；And can by two kinds of judgment modes come the accuracy of verification result,
Increase the safety of battery pack system.
Description of the drawings
Fig. 1 is a kind of battery pack system repeat circuit adhesion detects schematic diagram disclosed by the invention；
Fig. 2 is another battery pack system repeat circuit adhesion detects schematic diagram disclosed by the invention；
Fig. 3 is another battery pack system repeat circuit adhesion detects schematic diagram disclosed by the invention.
Specific embodiment
The embodiment of the present invention is described below in conjunction with the accompanying drawings, however the present invention is not restricted to following embodiment.
Embodiment 1
The present embodiment provides a kind of relay adhesion detection method of battery pack system, as shown in Figure 1, including battery module
A, relay SW1 and relay SW2, relay SW1 include contact a and contact b, and the anode of battery module A is with relay SW1's
Contact a connections；Relay SW2 includes contact c and contact d, and the cathode of battery module A is connect with the contact c of relay SW2；Packet
Include following steps：
Step 1：Disconnect relay SW1 and relay SW2；
Step 2：The detection voltage of battery module A is set as V1；The contact b of relay SW1 and relay SW2 is touched
Detection voltage between point c is set as V2；Detection voltage between the contact a of relay SW1 and relay SW2 contact d is set
It is set to V3；
Step 3：If V1 ≈ V2, judge that SW1 sticks together；If V1 ≈ V3, judge that SW2 sticks together.
Embodiment 2
The present embodiment provides a kind of relay adhesion detection method of battery pack system, as shown in Fig. 2, including battery module
A, relay SW1 and relay SW2, relay SW1 include contact a and contact b, and the anode of battery module A is with relay SW1's
Contact a connections；Relay SW2 includes contact c and contact d, and the cathode of battery module A is connect with the contact c of relay SW2；Packet
Include following steps：
Step 1：Disconnect relay SW1 and relay SW2；
Step 2：The detection voltage of battery module A is set as V1；The contact b of relay SW1 and relay SW2 is touched
Detection voltage between point c is set as V2；Detection voltage between the contact a of relay SW1 and relay SW2 contact d is set
It is set to V3；
Step 3：If V1 ≈ V2, judge that SW1 sticks together；If V1 ≈ V3, judge that SW2 sticks together.
And battery module B is further included, the contact b of relay SW1 is connect with the anode of battery module B, relay SW2's
Contact d is connect with the cathode of battery module B, and the detection voltage of battery module B is set as V4；If V3 ≈ V4, judge that SW1 is sent out
Raw adhesion；If V2 ≈ V4, judge that SW2 sticks together.With Step 5: step 6 collective effect, judges whether SW1 and SW2 sends out
Raw adhesion.
Embodiment 3
The present embodiment provides a kind of relay adhesion detection method of battery pack system, as shown in figure 3, including battery module
A, relay SW1 and relay SW2, relay SW1 include contact a and contact b, and the anode of battery module A is with relay SW1's
Contact a connections；Relay SW2 includes contact c and contact d, and the cathode of battery module A is connect with the contact c of relay SW1；After
Electric appliance SW1 and relay SW2 are connected in parallel, and are included the following steps：
Step 1：Disconnect relay SW1 and relay SW2；
Step 2：The detection voltage of battery module A is set as V1；The contact b of relay SW1 and relay SW2 is touched
Detection voltage between point c is set as V2；Detection voltage between the contact a of relay SW1 and relay SW2 contact d is set
It is set to V3；
Step 3：If V1 ≈ V2, judge that SW1 sticks together；If V1 ≈ V3, judge that SW2 sticks together.
Further include battery module B, and series relay between the cathode of the anode of battery module A and battery module B
SW3；Relay SW3 is disconnected, if V2 ≈ V1+V4, judge that SW3 sticks together.
It should be noted that above-mentioned, the description is merely to explain the principles of the invention, and cannot be in any way
It is construed to the concrete restriction to the scope of the present invention.Based on explanation herein, those skilled in the art is not paying creation
Property labour can associate the present invention other specific embodiments or equivalent replacement, fall within protection scope of the present invention.
Claims (5)
1. a kind of relay adhesion detection method of battery pack system, including battery module A, relay SW1 and relay SW2,
It is characterized in that：The relay SW1 includes contact a and contact b, the anode of the battery module A and the contact of relay SW1
A connections；The relay SW2 includes contact c and contact d, and the cathode of the battery module A connects with the contact c of relay SW2
It connects；And include the following steps：
Step 1：Disconnect relay SW1 and relay SW2；
Step 2：The detection voltage of battery module A is set as V1；By the contact b of relay SW1 and relay SW2 contact c it
Between detection voltage be set as V2；Detection voltage between the contact a of relay SW1 and relay SW2 contact d is set as
V3；
Step 3：If V1 ≈ V2, judge that SW1 sticks together；If V1 ≈ V3, judge that SW2 sticks together.
2. the relay adhesion detection method of battery pack system according to claim 1, it is characterised in that：Further include battery
Module B, the contact b of the relay SW1 are connect with the anode of battery module B, contact d and the battery mould of the relay SW2
The cathode connection of block B, V4 is set as by the detection voltage of battery module B；If V3 ≈ V4, judge that SW1 sticks together.
3. the relay adhesion detection method of battery pack system according to claim 1, it is characterised in that：Further include battery
Module B, the contact b of the relay SW1 are connect with the anode of battery module B, contact d and the battery mould of the relay SW2
The cathode connection of block B, V4 is set as by the detection voltage of battery module B；If V2 ≈ V4, judge that SW2 sticks together.
4. the relay adhesion detection method of battery pack system according to claim 1, it is characterised in that：Further include battery
Module B, series relay SW3 between the anode of the battery module A and the cathode of battery module B；Relay SW3 is disconnected, if
V2 ≈ V1+V4 then judge that SW3 sticks together.
5. the relay adhesion detection method of battery pack system according to claim 1, it is characterised in that：If V1 ≈ V2 ≈
V3 then judges that SW1 and SW2 stick together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611269853.0A CN108267686B (en) | 2016-12-30 | 2016-12-30 | Relay adhesion detection method of battery pack system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611269853.0A CN108267686B (en) | 2016-12-30 | 2016-12-30 | Relay adhesion detection method of battery pack system |
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| Publication Number | Publication Date |
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| CN108267686A true CN108267686A (en) | 2018-07-10 |
| CN108267686B CN108267686B (en) | 2021-05-11 |
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| CN201611269853.0A Active CN108267686B (en) | 2016-12-30 | 2016-12-30 | Relay adhesion detection method of battery pack system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110733348A (en) * | 2018-12-29 | 2020-01-31 | 长城汽车股份有限公司 | battery management method and device |
| 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 |
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| CN204556787U (en) * | 2015-03-13 | 2015-08-12 | 北汽福田汽车股份有限公司 | A kind of relay status monitoring device and there is its battery management system |
| CN105137336A (en) * | 2015-07-29 | 2015-12-09 | 南通大学 | Diagnostic circuit and diagnostic method for detecting electric vehicle high-voltage relay fault |
| CN105988082A (en) * | 2015-02-13 | 2016-10-05 | 广州汽车集团股份有限公司 | Detection method and apparatus for relay state of high-voltage system of electric car |
| CN205665378U (en) * | 2016-06-15 | 2016-10-26 | 宁德时代新能源科技股份有限公司 | Relay adhesion detection circuitry |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104391241A (en) * | 2014-10-13 | 2015-03-04 | 惠州市亿能电子有限公司 | High-voltage relay state detection circuit of power battery and method thereof |
| CN105988082A (en) * | 2015-02-13 | 2016-10-05 | 广州汽车集团股份有限公司 | Detection method and apparatus for relay state of high-voltage system of electric car |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110733348A (en) * | 2018-12-29 | 2020-01-31 | 长城汽车股份有限公司 | battery management 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 |
| 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 |
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| CN108267686B (en) | 2021-05-11 |
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Effective date of registration: 20230728 Address after: 12603 Southwest Avenue, 300 blocks, Stanford, Texas, United States Patentee after: MICROVAST, Inc. Address before: 313000 No. 2198 Hongfeng Road, Huzhou Economic and Technological Development Zone, Zhejiang Province Patentee before: MICROVAST POWER SYSTEMS Co.,Ltd. |