CN105137377B - Battery pack relay fault simulation injects test circuit - Google Patents
Battery pack relay fault simulation injects test circuit Download PDFInfo
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- CN105137377B CN105137377B CN201510374886.0A CN201510374886A CN105137377B CN 105137377 B CN105137377 B CN 105137377B CN 201510374886 A CN201510374886 A CN 201510374886A CN 105137377 B CN105137377 B CN 105137377B
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Abstract
The present invention relates to the fault diagnosis injection device technical fields of battery management relay, and in particular to battery pack relay fault simulation injects test circuit.The 4th relay connect the anode of box with battery pack and is connected in relay direct fault location box, and the other end is connected with the 6th relay；The positive extra-high voltage of battery pack connection box draws interface and is connected with the 6th relay；MCU control panels have four route beams to connect with rack, CAN_H, CAN_L, 12V and GND, and what is be connected with 5 relays inside simulation box is the positive and negative wiring of respective control line.It can very easily simulate the failures such as the unexpected open circuit of relay, adhesion, and also comprising vehicle artificial capacitor and active discharge resistance, safe to use so as to ensure.
Description
Technical field
The present invention relates to the fault diagnosis injection device technical fields of battery management relay, and in particular to battery pack relay
Device fault simulation injects test circuit.
Background technology
At present, there are three the relays of general batteries of electric automobile packet, respectively based on just, main negative and preliminary filling relay,
These three relays are usually packaged into a battery pack connection box (BDU, BatteryDisconnectUnit).Pass through control
The closures of these three relays is disconnected and being realized to a variety of operations such as the powering on of battery pack, preliminary filling and lower electricity.These three relays
Normal work is even more important to the safe handling of battery pack, therefore needs to consider in the design of battery management system to these three relays
Device detects the failures such as short-circuit, unexpected open circuit and adhesion and is detected, to ensure the safe handling of battery pack.But how
Rack simulates these failures, and examine the function of battery management system this respect up, and without special tool, this gives detection work
Bring difficulty.
Invention content
The object of the present invention is to provide battery pack relay fault simulations to inject test circuit, it can very easily be simulated
The failures such as the unexpected open circuit of relay, adhesion, and also comprising vehicle artificial capacitor and active discharge resistance, so as to ensure to use
Safety.
In order to solve the problems existing in background technology, the present invention adopts the following technical solutions：It connects comprising battery pack
Box a and relay direct fault location box b are met, battery pack connection box a includes the first relay 1, the second relay 2, third
Relay 3, first resistor 9, low pressure input/output interface 10；The relay direct fault location box b include the 4th relay 4,
5th relay 5, the 6th relay 6, the 7th relay 7, the 8th relay 8, second resistance 11,3rd resistor 12, electric discharge electricity
Resistance 13, capacitance 14, MCU control modular converter 15, battery pack positive terminal respectively with one end of the first relay 1, second resistance 11
Connection, the other end of the first relay 1 are connected to one end of the 6th relay 6；Second relay 2 and first resistor 9
Be connected in parallel on the both ends of the first relay 1 after series connection, battery pack negative pole end respectively with one end of third relay 3 and 3rd resistor 12
Connection, the other end of third relay 3 are connect with one end of the 7th relay 7；The other end of the second resistance 11 and
It is connect after the series connection of four relays 4 with one end of the 6th relay 6, the other end of the 6th relay 6 is connected to HV_BUS+ ports
On；The 3rd resistor 12 and the 5th relay 5 are connect after connecting with one end of the 7th relay 7, the 7th relay 7 it is another
One end is connected on HV_BUS- ports；The both ends of the capacitance 14 are connected to HV_BUS+ ports and HV_BUS- ports
Between；8th relay 8 is connected in parallel on after connecting with discharge resistance 13 on capacitance 14.
Low pressure input/output interface 10 is integrated on the battery pack connection box a.
The battery pack relay fault simulation injection sensor, it is characterised in that the relay direct fault location box
MCU control modular converters 15 are integrated on b.
The operation principle of the present invention：
1st, when the first relay 1, the second relay 2 are closed, the 5th relay 5, the 6th relay 6 are normally closed, examine at this time
Surveying HV_BUS both ends has voltage, then disconnects the 6th relay 6 suddenly, can if then detecting HV_BUS both ends no-voltage at this time
It simulates the unexpected of the first relay 1 and disconnects failure；Similarly, the 7th relay 7 is disconnected suddenly, then can simulate third relay
3 unexpected disconnection failure；
2nd, when the first relay 1, third relay 3 are closed, the 5th relay 5, the 6th relay 6 are normally closed, examine at this time
Surveying HV_BUS both ends has voltage, the 4th relay 4 is then first closed, then disconnect the first relay 1, if then detecting HV_BUS at this time
Still there is voltage at both ends, then can simulate the adhesion fault of the first relay 1；Similarly, the 5th relay 5 is first closed, then disconnects the
Three relays 3 can then simulate the adhesion fault of third relay 3；
3rd, when the first relay 1, third relay 3 disconnect, the 5th relay 5, the 6th relay 6 are normally closed, closely
Second relay 2, the 8th relay 8, due to there is active discharge electric resistance partial pressure, so HV_BUS both ends can be caused electric
Pressure cannot reach some threshold value always, cause pre-charge process that cannot complete.It can simulate due to battery rear end partial short-circuit
Caused by precharge time out fault diagnosis；
4th, the first relay 1, third relay 3, the 4th relay 4, the 5th relay the 5, the 6th are disconnected after experiment every time
Relay 6, the 7th relay 7 are closed the 8th relay 8, then can complete active discharge function；
If the 5th, the first relay 1, third relay 3, the 4th relay 4, the 5th relay 5, the are disconnected after experiment every time
Six relays 6, the 7th relay 7, the 8th relay 8, then HV_BUS both ends maintain higher voltage value always, master can be simulated
Dynamic electric discharge is abnormal.
Beneficial effects of the present invention：It can not change the design of battery pack connection box, by the way that relay failure is controlled to note
Enter the opening and closing combination of the relay in box, you can simulate open circuit and the adhesion fault of relay.It is simple in structure, there is versatility.
In addition, direct fault location box also added a control signal conversion module, low-voltage power supply is inputted as CAN signal, this
CAN signal is converted into the control signal of relay switch in box and then exported by a module.Not only external pin count is simplified, but also
Realize computer end control function.
Description of the drawings：
Fig. 1 is the electrical block diagram of the present invention.
Reference numeral：Battery pack connection box a, relay direct fault location box b, the first relay 1, the second relay 2, third
Relay 3, the 4th relay 4, the 5th relay 5, the 6th relay 6, the 7th relay 7, the 8th relay 8, first resistor
9th, low pressure input/output interface 10, second resistance 11,3rd resistor 12, discharge resistance 13, capacitance 14, MCU control modular converters
15。
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with attached drawing and specific implementation
Mode, the present invention will be described in further detail.It should be appreciated that the specific embodiments described herein are only explaining this
Invention, is not intended to limit the present invention.
Referring to Fig. 1, present embodiment uses following technical scheme：It includes battery pack connection box a and relay event
Barrier injection box b, battery pack connection box a include the first relay 1, the second relay 2, third relay 3, first resistor
9th, low pressure input/output interface 10；The relay direct fault location box b includes the 4th relay 4, the 5th relay the 5, the 6th
Relay 6, the 7th relay 7, the 8th relay 8, second resistance 11,3rd resistor 12, discharge resistance 13, capacitance 14, MCU controls
Modular converter 15 processed, battery pack positive terminal are connect respectively with one end of the first relay 1, second resistance 11, the first relay 1
The other end is connected to one end of the 6th relay 6；Second relay 2 be connected in parallel on after connecting with first resistor 9 first after
The both ends of electric appliance 1, battery pack negative pole end are connect respectively with one end of third relay 3 and 3rd resistor 12, third relay 3
The other end is connect with one end of the 7th relay 7；The other end of the second resistance 11 connect with the 4th relay 4 after with
One end connection of six relays 6, the other end of the 6th relay 6 are connected on HV_BUS+ ports；The 3rd resistor 12 with
It is connect after the series connection of 5th relay 5 with one end of the 7th relay 7, the other end of the 7th relay 7 is connected to HV_BUS- ports
On；The both ends of the capacitance 14 are connected between HV_BUS+ ports and HV_BUS- ports；8th relay 8
It is connected in parallel on after connecting with discharge resistance 13 on capacitance 14.
Low pressure input/output interface 10 is integrated on the battery pack connection box a.
The battery pack relay fault simulation injection sensor, it is characterised in that the relay direct fault location box
MCU control modular converters 15 are integrated on b.
The operation principle of present embodiment：
1st, when the first relay 1, the second relay 2 are closed, the 5th relay 5, the 6th relay 6 are normally closed, examine at this time
Surveying HV_BUS both ends has voltage, then disconnects the 6th relay 6 suddenly, can if then detecting HV_BUS both ends no-voltage at this time
It simulates the unexpected of the first relay 1 and disconnects failure；Similarly, the 7th relay 7 is disconnected suddenly, then can simulate third relay
3 unexpected disconnection failure；
2nd, when the first relay 1, third relay 3 are closed, the 5th relay 5, the 6th relay 6 are normally closed, examine at this time
Surveying HV_BUS both ends has voltage, the 4th relay 4 is then first closed, then disconnect the first relay 1, if then detecting HV_BUS at this time
Still there is voltage at both ends, then can simulate the adhesion fault of the first relay 1；Similarly, the 5th relay 5 is first closed, then disconnects the
Three relays 3 can then simulate the adhesion fault of third relay 3；
3rd, when the first relay 1, third relay 3 disconnect, the 5th relay 5, the 6th relay 6 are normally closed, closely
Second relay 2, the 8th relay 8, due to there is active discharge electric resistance partial pressure, so HV_BUS both ends can be caused electric
Pressure cannot reach some threshold value always, cause pre-charge process that cannot complete.It can simulate due to battery rear end partial short-circuit
Caused by precharge time out fault diagnosis；
4th, the first relay 1, third relay 3, the 4th relay 4, the 5th relay the 5, the 6th are disconnected after experiment every time
Relay 6, the 7th relay 7 are closed the 8th relay 8, then can complete active discharge function；
If the 5th, the first relay 1, third relay 3, the 4th relay 4, the 5th relay 5, the are disconnected after experiment every time
Six relays 6, the 7th relay 7, the 8th relay 8, then HV_BUS both ends maintain higher voltage value always, master can be simulated
Dynamic electric discharge is abnormal.
The advantageous effect of present embodiment：It can not change the design of battery pack connection box, by controlling relay
The opening and closing combination of relay in device direct fault location box, you can simulate open circuit and the adhesion fault of relay.It is simple in structure, have
Versatility.
In addition, direct fault location box also added a control signal conversion module, low-voltage power supply is inputted as CAN signal, this
CAN signal is converted into the control signal of relay switch in box and then exported by a module.Not only external pin count is simplified, but also
Realize computer end control function.
The above is merely illustrative of the technical solution of the present invention and unrestricted, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, without departing from the spirit and scope of technical solution of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (4)
1. battery pack relay fault simulation injects test circuit, it is characterised in that：It includes battery pack connection box (a) and relay
Device direct fault location box (b), battery pack connection box (a) include the first relay (1), the second relay (2), third relay
Device (3), first resistor (9), low pressure input/output interface (10)；The relay direct fault location box b includes the 4th relay
(4), the 5th relay (5), the 6th relay (6), the 7th relay (7), the 8th relay (8), second resistance (11), third
Resistance (12), discharge resistance (13), capacitance (14), MCU control modular converter (15), battery pack positive terminal respectively with the first relay
One end of device (1), second resistance (11) connection, the other end of the first relay (1) are connected to one end of the 6th relay (6)；
Second relay (2) and first resistor (9 connect after be connected in parallel on the both ends of the first relay (1), battery pack negative pole end point
It is not connect with one end of third relay (3) and 3rd resistor (12), the other end and the 7th relay of third relay (3)
(7) one end connection；The other end of the second resistance (11) connect with the 4th relay (4) after with the 6th relay (6)
One end connection, the other end of the 6th relay (6) is connected on HV_BUS+ ports；The 3rd resistor (12) and the 5th
It is connect after relay (5) series connection with one end of the 7th relay (7), the other end of the 7th relay (7) is connected to HV_BUS- ends
On mouth；The both ends of the capacitance (14) are connected between HV_BUS+ ports and HV_BUS- ports；Described the 8th after
Electric appliance (8) is connected in parallel on after connecting with discharge resistance (13) on capacitance (14).
2. battery pack relay fault simulation according to claim 1 injects test circuit, it is characterised in that the electricity
Low pressure input/output interface (10) is integrated on Chi Bao connection boxes (a).
3. battery pack relay fault simulation according to claim 1 injects test circuit, it is characterised in that it is described after
MCU control modular converters (15) are integrated on apparatus failure injection box (b).
4. battery pack relay fault simulation according to claim 1 injects test circuit, it is characterised in that：Its work
Principle：1) when the first relay (1), the second relay (2) are closed, the 5th relay (5), the 6th relay (6) are normally closed, this
When detection HV_BUS both ends have voltage, then disconnect the 6th relay (6) suddenly, if then at this time detection HV_BUS both ends without electricity
Pressure can then simulate the unexpected of the first relay (1) and disconnect failure；Similarly, the 7th relay (7) is disconnected suddenly, then can be simulated
It has the unexpected of third relay (3) and disconnects failure；2) when the first relay (1), third relay (3) are closed, the 5th relay
Device (5), the 6th relay (6) are normally closed, and detecting HV_BUS both ends at this time has voltage, is then first closed the 4th relay (4), then break
The first relay (1) is opened, if then still there is voltage at detection HV_BUS both ends at this time, the adhesion of the first relay (1) can be simulated
Failure；Similarly, the 5th relay (5) is first closed, then disconnects third relay (3), then can simulate the viscous of third relay (3)
Even failure；3) when the first relay (1), third relay (3) disconnect, the 5th relay (5), the 6th relay (6) are normally closed,
Closely the second relay (2), the 8th relay (8), due to there is active discharge electric resistance partial pressure, so can cause
HV_BUS both end voltages cannot reach some threshold value always, cause pre-charge process that cannot complete, and can simulate due to battery
Time out fault diagnosis is pre-charged caused by the partial short-circuit of rear end；4) the first relay (1), third relay are disconnected after experiment every time
Device (3), the 4th relay (4), the 5th relay (5), the 6th relay (6), the 7th relay (7) are closed the 8th relay
(8), then active discharge function can be completed；If 5) the first relay (1), third relay (3), the 4th are disconnected after experiment every time
Relay (4), the 5th relay (5), the 6th relay (6), the 7th relay (7), the 8th relay (8), then HV_BUS two
End maintains higher voltage value always, can simulate active discharge exception.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374886.0A CN105137377B (en) | 2015-06-30 | 2015-06-30 | Battery pack relay fault simulation injects test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510374886.0A CN105137377B (en) | 2015-06-30 | 2015-06-30 | Battery pack relay fault simulation injects test circuit |
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| Publication Number | Publication Date |
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| CN105137377A CN105137377A (en) | 2015-12-09 |
| CN105137377B true CN105137377B (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510374886.0A Active CN105137377B (en) | 2015-06-30 | 2015-06-30 | Battery pack relay fault simulation injects test circuit |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110667433B (en) * | 2018-07-03 | 2021-01-26 | 郑州宇通客车股份有限公司 | Pre-charging protection method and device for vehicle integrated controller |
| CN110456268B (en) * | 2019-09-16 | 2021-04-27 | 东风航盛（武汉）汽车控制系统有限公司 | High-voltage relay diagnosis test system and method based on HIL rack |
| CN113050590A (en) * | 2021-03-08 | 2021-06-29 | 上海金脉汽车电子有限公司 | BMS controller testing system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB815542A (en) * | 1955-07-30 | 1959-06-24 | Standard Telephones Cables Ltd | Railway signalling equipment |
| CN103552479A (en) * | 2013-11-11 | 2014-02-05 | 镇江中研电控有限公司 | Vehicle power assembly and control circuit thereof |
| CN203858341U (en) * | 2014-05-29 | 2014-10-01 | 北京市亿能通电子有限公司 | BMS high-voltage electrifying control test box |
| CN104442406B (en) * | 2014-10-31 | 2017-04-05 | 惠州市亿能电子有限公司 | A kind of method for judging high-voltage relay adhesion |
| CN104608637B (en) * | 2014-12-08 | 2017-03-29 | 惠州市亿能电子有限公司 | A kind of electric automobile power-on and power-off control method |
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Effective date of registration: 20161123 Address after: Jiading District Anting Town, Shanghai city 201805 Bai'an Road No. 1000 building 3 Applicant after: Shanghai Yirui Automobile Science & Technology Co., Ltd. Applicant after: Dazhong Lianhe Development Co., Ltd., Shanghai Address before: Jiading District Anting Town, Shanghai city 201805 Bai'an Road No. 1000 building 3 Applicant before: Shanghai Yirui Automobile Science & Technology Co., Ltd. |
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