CN209274363U - The detection of power battery high-voltage interlocking and control circuit - Google Patents
The detection of power battery high-voltage interlocking and control circuit Download PDFInfo
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- CN209274363U CN209274363U CN201821989158.6U CN201821989158U CN209274363U CN 209274363 U CN209274363 U CN 209274363U CN 201821989158 U CN201821989158 U CN 201821989158U CN 209274363 U CN209274363 U CN 209274363U
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- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 230000001681 protective effect Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 5
- 238000007726 management method Methods 0.000 description 14
- 238000005192 partition Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 2
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
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- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a kind of detection of power battery high-voltage interlocking and control circuit, including HVIL loop, HVIL relay, high-voltage relay, battery pack and battery management system, the input terminal of HVIL loop is connected with HVIL voltage input end, the output end of HVIL loop is separately connected the coil common end of HVIL relay, the test side HVIL of battery management system and HVIL voltage output end, the coil controlled end of HVIL relay is grounded, battery pack is electrically connected with the switch block of high-voltage relay and is enclosed closed circuit, the switch block input terminal cut-in relay coil low-voltage power supply of HVIL relay.Using HVIL relay, battery pack low-tension supply circuit is indirectly controlled, when guarantee is broken down, the control coil power supply that cutoff action cuts off all high-voltage relay switches of battery pack simultaneously occurs for HVIL relay, realizes high pressure open circuit.
Description
Technical field
The utility model relates to the technical field of electric car more particularly to a kind of detections of power battery high-voltage interlocking and control
Circuit processed.
Background technique
Higher and higher, institute is required in terms of at present in electric car to the ability of detection high-pressure system state and detection reliability
With require battery management system can more reliable detection high-voltage interlocking state, and can precisely detect positioning failure reason.It is high
The purpose for pressing interlocking loop HVIL (HighVoltage Interlock Loop) is for confirming the complete of entire high-pressure system
Property, when high-pressure system circuit disconnects or integrality is by destroying, it is necessary to start safety measure.
Prior art is usually exported by single-chip I/O mouth all the way through the amplified pulse signal of overdrive circuit, is passed through
The series circuit of HVIL loop carries out the place of feedback signal by single-chip microcontroller from the end of HVIL circuit feedback into single-chip microcontroller
Reason, judges whether HVIL circuit is in malfunction.
Existing scheme carries out the state judgement of high-voltage interlocking switch by single channel pulse signal, is easy to be done by vehicle environment
Disturb, vehicle environment haves the characteristics that noise is big, common mode interference signal is strong, single channel pulse signal by longer transmission line and
After multiple high-tension connectors, it is easy the interference by external signal, leads to distorted signals, such feedback signal is conducted back to single-chip microcontroller
Afterwards, it is be easy to cause the erroneous judgement of single-chip microcontroller, so as to cause the nuisance trips of power battery High voltage output, causes to dash forward in driving conditions
It so runs out of steam, generates safety accident.
Utility model content
Shortcoming present in view of the above technology, the utility model provide that a kind of principle is simple, operation is easily dynamic
The detection of power battery high-voltage interlocking and control circuit.
In order to achieve the above object, a kind of power battery high-voltage interlocking detection of the utility model and control circuit, including
HVIL loop, HVIL relay, high-voltage relay, battery pack and battery management system, the input terminal of the HVIL loop with
HVIL voltage input end is connected, and the output end of the HVIL loop is separately connected the coil common end of HVIL relay, cell tube
The test side HVIL of reason system and HVIL voltage output end, the coil controlled end ground connection of the HVIL relay, the battery
Packet is electrically connected with the switch block of high-voltage relay is enclosed closed circuit, the switch block input terminal of the HVIL relay
Cut-in relay coil low-voltage power supply, the switch block output end of the HVIL relay and the coil common end of high-voltage relay
It is connected, the coil controlled end of high-voltage relay side control terminal low with battery management system is connected.
Wherein, the high-voltage relay includes total positive relay, total negative relay, charge relay and preliminary filling relay
Device, total just the switch block input terminal of relay, the switch block output end of charge relay and the preliminary filling relay
Switch block input terminal is connected with the output end of battery pack, the switch block output end and preliminary filling of total positive relay after
The switch block output end of electric appliance is connected with battery power supply anode, the switch block input terminal of the charge relay and charging
Mouth is connected, and the switch block output end of total negative relay is connected with the input terminal of battery pack, and total negative relay is opened
It closes component inputs to be connected with battery power supply cathode, the coil common end of total positive relay, the coil of charge relay are public
End and the coil common end of pre-charge-relay are connected with the switch block output end of HVIL relay altogether, it is described always just after
The coil controlled end of the coil controlled end of electric appliance, the coil controlled end of charge relay and pre-charge-relay is and cell tube
The low side control terminal of reason system is connected.
Wherein, which further includes fuse and precharge protective resistance, the output end and battery pack of the fuse
Input terminal be connected, the input terminal of the fuse is connected with the switch block output end of charge relay, precharge guarantor
The input terminal of shield resistance is connected with the switch block output end of preliminary filling relay, the output end and electricity of the precharge protective resistance
Pond power supply anode is connected.
Wherein, the HVIL loop include battery power supply cathode circuit, charge port circuit and battery power supply cathode traces,
The input terminal of the battery power supply cathode circuit is connected with HVIL voltage input end, the output end of the battery power supply cathode circuit
It is connected with the input terminal of charge port circuit, the input terminal phase of the output end and battery power supply cathode traces of the charge port circuit
Even, the output ends of battery power supply cathode traces is separately connected the coil common end of HVIL relay, battery management system
The test side HVIL and HVIL voltage output end.
Wherein, the HVIL voltage input end is connected with the voltage output end of entire car controller, the HVIL voltage input
End is connected with the voltage input end of entire car controller.
Wherein, which further includes interrupt interval relay, and the interrupt interval relay is arranged in battery pack.
The beneficial effects of the utility model are:
Compared with prior art, the utility model utilizes the series circuit of HVIL loop, by HVIL voltage input end
And the voltage value of HVIL voltage output end detects whether entire high-voltage interlocking circuit is connected, to judge high-tension connector
Connection status indirectly controls battery pack low-tension supply circuit using HVIL relay, when guarantee is broken down, HVIL relay
The control coil power supply that cutoff action cuts off all high-voltage relay switches of battery pack simultaneously occurs, realizes high pressure open circuit.
Detailed description of the invention
Fig. 1 is the circuit diagram of the detection of the utility model power battery high-voltage interlocking and control circuit；
Fig. 2 is the principle flow chart of the detection of the utility model power battery high-voltage interlocking and control circuit.
Specific embodiment
In order to more clearly state the utility model, the utility model is further described with reference to the accompanying drawing.
Refering to fig. 1, a kind of power battery high-voltage interlocking detection of the utility model and control circuit, including HVIL loop,
HVIL relay K1, high-voltage relay, battery pack and battery management system BMS, the input terminal and HVIL voltage of HVIL loop
Input terminal is connected, and the output end of HVIL loop is separately connected the coil common end of HVIL relay K1, battery management system BMS
The test side HVIL and HVIL voltage output end, the coil controlled end ground connection of HVIL relay K1, battery pack and high-voltage relay
Switch block electrical connection be enclosed closed circuit, the switch block input terminal cut-in relay coil of HVIL relay K1 is low
Pressure power supply, the switch block input terminal of HVIL relay K1 are connected with the coil common end of high-voltage relay, high-voltage relay
Coil controlled end side control terminal low with battery management system BMS's is connected.
Compared to the prior art, the utility model utilizes the series circuit of HVIL loop, by HVIL voltage input end
And the voltage value of HVIL voltage output end detects whether entire high-voltage interlocking circuit is connected, to judge high-tension connector
Connection status indirectly controls battery pack low-tension supply circuit using HVIL relay K1, when guarantee is broken down, HVIL relay
The control coil power supply that cutoff action cuts off all high-voltage relay switches of battery pack simultaneously occurs for device K1, realizes high pressure open circuit.
Further referring to Fig. 2, HVIL voltage input end input voltage signal, HVIL relay K1 switch block is closed,
At this time the driving coil of total positive relay K2, total driving coil of negative relay K3, the driving coil of preliminary filling relay K5 and
The driving coil of charge relay K4 is by relay coil low-voltage power supply；Battery management system BMS detects contact by HVIL and sentences
Whether disconnected HVIL signal is normal, and if it is normal, battery management system BMS and entire car controller VCU are according to control strategy control
Battery pack power-on and power-off processed；If it is abnormal, HVIL relay K1 is disconnected, while battery management system BMS and entire car controller
VCU executes corresponding failure strategy after detecting HVIL feedback exception；The driving coil of total positive relay K2, total negative relay K3
Driving coil, the driving coil of the driving coil of preliminary filling relay K5 and charge relay K4 is for electrically disconnected；In battery pack
Intermediate partition relay K6 disconnect；Power battery stops working.
The present invention using the series circuit of HVIL loop, passes through vehicle control by taking electricity from low-tension supply (lead-acid battery)
Device processed detects the driving voltage that the end HVIL reaches to detect whether entire high-voltage interlocking circuit is connected, to judge that high pressure connects
The connection status of device, while the control coil for adding high-voltage interlocking relay a K1, K1 is connected in HVIL loop, contact control
High-voltage relay power supply in battery pack processed can cut off total positive electric discharge relay when external high pressure, which interlocks, to break down
Device K2, total negative relay K3, charge relay K4, preliminary filling relay K5, cutting battery pack external high pressure power supply output.Voltage letter
Number stabilization, it is anti-interference strong, the breakdown judge of HVIL loop is carried out by voltage signal, can achieve better high-voltage interlocking monitoring
Effect.
In the present embodiment, high-voltage relay include total positive relay K2, total negative relay K3, charge relay K4 and
Preliminary filling relay K5, the switch block input terminal of total positive relay K2, the switch block output end of charge relay K4 and pre-
The switch block input terminal for filling relay K5 is connected with the output end of battery pack, the switch block output end of total positive relay K2
And the switch block output end of preliminary filling relay K5 is connected with battery power supply anode, the switch block of charge relay K4 is defeated
Enter end to be connected with charge port, the switch block output end of total negative relay K3 is connected with the input terminal of battery pack, total negative relay
The switch block input terminal of K3 and battery power supply cathode are connected, the total just coil common end of relay K2, charge relay K4
Coil common end and the coil common end of pre-charge-relay K5 are connected with the switch block output end of HVIL relay K1,
The coil of the coil controlled end of total positive relay K2, the coil controlled end of charge relay K4 and pre-charge-relay K5 is controlled
Side control terminal low with battery management system BMS's is held to be connected.
In the present embodiment, which further includes fuse FUSE and precharge protective resistance R, and fuse FUSE's is defeated
Outlet is connected with the input terminal of battery pack, the switch block output end phase of the input terminal and charge relay K4 of fuse FUSE
Even, the input terminal of precharge protective resistance R is connected with the switch block output end of preliminary filling relay K5, is pre-charged protective resistance R
Output end and battery power supply anode be connected.
In the present embodiment, HVIL loop includes battery power supply cathode circuit, charge port circuit and battery power supply cathode
Circuit, battery power supply cathode circuit input terminal be connected with HVIL voltage input end, battery power supply cathode circuit output end and
The input terminal of charge port HVIL circuit is connected, and the output end of charge port circuit is connected with the input terminal of battery power supply cathode traces,
The output end of battery power supply cathode traces is separately connected the coil common end of HVIL relay K1, battery management system BMS
The test side HVIL and HVIL voltage output end.Battery power supply cathode circuit, charge port circuit and battery power supply cathode traces
It is connector, is connected by HVIL snap switch device, when connector plug and socket cooperation lock into place, HVIL spring
The closure that is squeezed is switched, otherwise is disconnected, by this relationship, to judge the state of connector.
In the present embodiment, HVIL voltage input end is connected with the voltage output end of entire car controller VCU, and HVIL voltage is defeated
Enter end to be connected with the voltage input end of entire car controller VCU.HVIL loop voltage signal is by the normal electric (lead-acid battery/DCDC of vehicle
The low-tension supply of conversion) it provides, the driving coil positive pole 12V+ of HVIL relay K1 is mentioned by HVIL loop voltage signal
For the voltage signal of HVIL loop is controlled by entire car controller VCU, and the end feedback signal of HVIL loop accesses full-vehicle control
Device is monitored by entire car controller VCU, while accessing BMS, by the monitoring of battery management system BMS.HVIL loop breaks down
When, entire car controller VCU can monitor the fault alarm that high-voltage interlocking circuit generates, and preferential answering executes corresponding protection plan
Slightly；When HVIL loop breaks down, BMS can monitor the fault alarm that high-voltage interlocking circuit generates, while BMS can be worked normally
It is communicated with vehicle VCU, when entire car controller VCU is more than the time limit, when being not carried out corresponding Preservation tactics, it is mutual that BMS intervenes high pressure
The troubleshooting of lock loop executes pre-set corresponding Preservation tactics；When HVIL loop breaks down, high-voltage relay is disconnected
Device coil power supply increases intermediate partition relay K6 to prevent the high-voltage relay being disconnected from sticking together, among battery pack, when
When high-voltage relay adhesion, centre partition relay K6 can effectively disconnect power battery high tension loop.
In the present embodiment, which further includes interrupt interval relay K6, and interrupt interval relay K6 is arranged in battery
In packet.
The advantage of the utility model is:
A) the normal piezoelectric voltage signal of lead-acid battery, strong antijamming capability are used；
B) power battery high-voltage interlocking loop control principle is simple, and it is convenient and low in cost to operate；
C) HVIL relay K1 is used, battery pack low-tension supply circuit is indirectly controlled, when guarantee is broken down, HVIL relay
Device K1 occur cutoff action cut off simultaneously all relay switches of battery pack (total positive relay K2/ always negative relay K3/ charging after
Separate relay K6 among electric appliance K4/) control coil power supply (12V+), realize high pressure open circuit；
D) voltage signal of HVIL inputs (vehicle OUT12V+) by entire car controller, guarantees that voltage signal source is stablized and continues；
E) voltage signal of HVIL returns to entire car controller VCU (vehicle by the end HVIL behind high-voltage interlocking circuit
IN12V+), while the feedback voltage signal that battery management system BMS, BMS and VCU monitor HVIL loop on-line simultaneously is accessed, it is real
Existing two-way redundancy monitoring, can effectively prevent erroneous judgement, the maloperation of monitoring unit；
F) increase intermediate partition relay K6 among battery pack, when high-voltage relay adhesion, centre partition relay K6
Power battery high tension loop can effectively be disconnected.
Disclosed above is only several specific embodiments of the utility model, but the utility model is not limited to this,
The changes that any person skilled in the art can think of should all fall into the protection scope of the utility model.
Claims (6)
1. a kind of detection of power battery high-voltage interlocking and control circuit, which is characterized in that including HVIL loop, HVIL relay,
The input terminal of high-voltage relay, battery pack and battery management system, the HVIL loop is connected with HVIL voltage input end, institute
State HVIL loop output end be separately connected the coil common end of HVIL relay, battery management system the test side HVIL and
HVIL voltage output end, the coil controlled end ground connection of the HVIL relay, the switching group of the battery pack and high-voltage relay
Part electrical connection is enclosed closed circuit, and the switch block input terminal cut-in relay coil low pressure of the HVIL relay supplies
Electricity, the switch block output end of the HVIL relay are connected with the coil common end of high-voltage relay, the high-voltage relay
Coil controlled end side control terminal low with battery management system be connected.
2. power battery high-voltage interlocking according to claim 1 detection and control circuit, which is characterized in that the high pressure after
Electric appliance includes total positive relay, total negative relay, charge relay and preliminary filling relay, the switching group of total positive relay
The switch block input terminal of part input terminal, the switch block output end of charge relay and preliminary filling relay with battery pack
Output end is connected, the switch block output end of the switch block output end of total positive relay and preliminary filling relay with electricity
Pond power supply anode is connected, and the switch block input terminal of the charge relay is connected with charge port, and total negative relay is opened
It closes component output end to be connected with the input terminal of battery pack, the switch block input terminal and battery power supply cathode of total negative relay
It is connected, coil common end, the coil common end of charge relay and the coil of pre-charge-relay of total positive relay
Common end is connected with the switch block output end of HVIL relay, the coil controlled end of total positive relay, charging relay
The coil controlled end of device and the coil controlled end of pre-charge-relay side control terminal low with battery management system are connected.
3. power battery high-voltage interlocking detection according to claim 2 and control circuit, which is characterized in that the circuit also wraps
It includes fuse and precharge protective resistance, the output end of the fuse is connected with the input terminal of battery pack, the fuse
Input terminal be connected with the switch block output end of charge relay, it is described precharge protective resistance input terminal and preliminary filling relay
The switch block output end of device is connected, and the output end of the precharge protective resistance is connected with battery power supply anode.
4. power battery high-voltage interlocking detection according to claim 2 and control circuit, which is characterized in that the HVIL is returned
Road includes battery power supply cathode circuit, charge port circuit and battery power supply cathode traces, battery power supply cathode circuit
Input terminal is connected with HVIL voltage input end, the input terminal phase of the output end and charge port circuit of the battery power supply cathode circuit
Even, the output end of the charge port circuit is connected with the input terminal of battery power supply cathode traces, the battery power supply cathode traces
Output end to be separately connected the coil common end of HVIL relay, the test side HVIL of battery management system and HVIL voltage defeated
Outlet.
5. power battery high-voltage interlocking detection according to claim 4 and control circuit, which is characterized in that the HVIL electricity
Pressure input terminal is connected with the voltage output end of entire car controller, the voltage input of the HVIL voltage input end and entire car controller
End is connected.
6. power battery high-voltage interlocking detection according to claim 1 and control circuit, which is characterized in that the circuit also wraps
Interrupt interval relay is included, the interrupt interval relay is arranged in battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821989158.6U CN209274363U (en) | 2018-11-29 | 2018-11-29 | The detection of power battery high-voltage interlocking and control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821989158.6U CN209274363U (en) | 2018-11-29 | 2018-11-29 | The detection of power battery high-voltage interlocking and control circuit |
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| CN209274363U true CN209274363U (en) | 2019-08-20 |
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| CN201821989158.6U Active CN209274363U (en) | 2018-11-29 | 2018-11-29 | The detection of power battery high-voltage interlocking and control circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110803027A (en) * | 2019-11-28 | 2020-02-18 | 东风商用车有限公司 | High-voltage interlocking circuit of solar cell system |
| CN113954644A (en) * | 2020-07-01 | 2022-01-21 | 沃尔沃卡车集团 | Disconnection of vehicle electrical system using low voltage switch |
-
2018
- 2018-11-29 CN CN201821989158.6U patent/CN209274363U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110803027A (en) * | 2019-11-28 | 2020-02-18 | 东风商用车有限公司 | High-voltage interlocking circuit of solar cell system |
| CN113954644A (en) * | 2020-07-01 | 2022-01-21 | 沃尔沃卡车集团 | Disconnection of vehicle electrical system using low voltage switch |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220810 Address after: No. 6, Yingzhou 1st Street, Gaozhuang Town, Jinghe New Town, Xixian New District, Xi'an City, Shaanxi Province 710000 Patentee after: Shaanxi epno electric energy storage technology Co.,Ltd. Address before: 518000 Room 201, building A, No. 1, Qian Wan Road, Qianhai Shenzhen Hong Kong cooperation zone, Shenzhen, Guangdong (Shenzhen Qianhai business secretary Co., Ltd.) Patentee before: SHENZHEN XINHENGYE POWER TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 6, Yingzhou 1st Street, Gaozhuang Town, Jinghe New Town, Xixian New District, Xi'an City, Shaanxi Province 710000 Patentee after: Shaanxi Epuno New Energy Technology Co.,Ltd. Address before: No. 6, Yingzhou 1st Street, Gaozhuang Town, Jinghe New Town, Xixian New District, Xi'an City, Shaanxi Province 710000 Patentee before: Shaanxi epno electric energy storage technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |