CN106300475A - A kind of charging cooling system of batteries of electric automobile group - Google Patents
A kind of charging cooling system of batteries of electric automobile group Download PDFInfo
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- CN106300475A CN106300475A CN201510295882.3A CN201510295882A CN106300475A CN 106300475 A CN106300475 A CN 106300475A CN 201510295882 A CN201510295882 A CN 201510295882A CN 106300475 A CN106300475 A CN 106300475A
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Abstract
The invention provides the charging cooling system of a kind of batteries of electric automobile group, including BMS, set of cells DC, electric fan M1, storage capacitor C1, first relay R the 1, second relay R the 2, the 3rd relay R the 3, first diode D1 and the second diode D2.Set of cells DC in the certain time in charging process or after charging, timely and effective can be dispelled the heat by this charging cooling system, improves the safety in service life of set of cells DC and charging process, has preferable market application foreground.
Description
Technical field
The present invention relates to a kind of cooling system, a kind of charging cooling system for batteries of electric automobile group.
Background technology
At present, along with being widely used of clean energy resource, domestic pure electric automobile also presents the flourish impetus, direct current or alternating-current charging pile are when charging to the set of cells of electric automobile, battery can be the most overheated, particularly BMS(BATTERY MANAGEMENT SYSTEM after pulling out charging gun, battery management system) it is in unpowered state, can not pro-active intervention, and charge heat dissipation problem and after pulling out charging gun in the case of car load low tension is all cut off, also make set of cells can continue heat radiation by external condition without practical solution.But heat radiation timely and effectively cannot can cause the service life reduction of battery, serious results even in the dangerous phenomenons such as battery catches fire.In view of domestic the charging of many pure electric coach has occurred after pull out charging gun after case on fire, be badly in need of working out a kind of technical scheme to solve the safety problem of battery.
Summary of the invention
The technical problem to be solved in the present invention is that the set of cells of existing electric automobile BMS after pulling out charging gun is in unpowered state, it is impossible to the charging heat dissipation problem of pro-active intervention set of cells.
In order to solve above-mentioned technical problem, the invention provides the charging cooling system of a kind of electric automobile power battery group, including BMS, accumulator battery DC, electric fan M1, storage capacitor C1, first relay R the 1, second relay R the 2, the 3rd relay R the 3, first diode D1 and the second diode D2；The positive terminal of the first diode D1 and one end of the first relay R 1 coil all positive poles with vehicle charging interface are connected；The negative pole end of the negative pole end of BMS, the negative pole end of accumulator battery DC and electric fan M1 all negative poles with vehicle charging interface are connected；The positive terminal of BMS is connected with the negative pole end of the first diode D1 and the negative pole of the second diode D2 respectively；Storage capacitor C1 is serially connected between the positive terminal of BMS and negative pole end；The other end ground connection of the first relay R 1 coil；The voltage output end B1 of BMS and one end of the 3rd relay R 3 coil are connected, the other end ground connection of the 3rd relay R 3 coil；The positive pole of the second diode D2 and the movable contact of the second relay R 2 are connected；The normally opened contact of the second relay R 2 and the movable contact of the first relay R 1 are connected, and the normally-closed contact of the first relay R 1 is connected with the positive terminal of accumulator battery DC and the normally opened contact of the 3rd relay R 3 respectively；The movable contact of the 3rd relay R 3 is connected with the positive terminal of electric fan M1 and one end of the second relay R 2 coil respectively；The other end ground connection of the second relay R 2 coil.
Use the first relay R 1 that accumulator battery DC can be made when vehicle charging interface charges normal not provide power supply to BMS, improve the charge efficiency of accumulator battery DC；Use storage capacitor C1 to be serially connected between the positive terminal of BMS and negative pole end, make charging gun pull out rear BMS and remain to maintain the duty of a short time, enable accumulator battery DC to export low tension in time to BMS, allow BMS maintain incessantly and normally work；Use between electric fan M1 and BMS, increase the 3rd relay R 3, when the temperature of power accumulator group DC is too high or normal, BMS can be exported control voltage by low-voltage output B1 to the 3rd relay R 3, thus control electric fan M1 and start working or quit work；Use the second relay R 2 can to automatically cut off accumulator battery DC and power to BMS, make BMS quit work when the temperature of power battery pack is recovered normal, reduce the electric energy loss of accumulator；Use the first diode D1 and the second diode D2 after charging gun pulls out, can prevent the electric energy of storage capacitor C1 from revealing.
Scheme as a further improvement on the present invention, also includes a first fuse FU1；The positive pole of the second diode D2 movable contact with the second relay R 2 after the first fuse FU1 is connected.Using the first fuse FU1 can power to BMS in accumulator battery DC prevents voltage excessive, effectively protects BMS.
Scheme as a further improvement on the present invention, also includes a second fuse FU2；The movable contact of the 3rd relay R 3 is connected with the positive terminal of electric fan M1 and one end of the second relay R 2 coil after the second fuse FU2 respectively.Using the second fuse FU2 can power to electric fan M1 in accumulator battery DC prevents voltage excessive, effectively protects electric fan M1.
The beneficial effects of the present invention is: (1) uses the first relay R 1 that accumulator battery DC can be made not provide power supply to BMS when vehicle charging interface charges normal, and saves the electric energy of accumulator battery DC；(2) use storage capacitor C1 to be serially connected between the positive terminal of BMS and negative pole end, make charging gun pull out rear BMS and remain to maintain the duty of a short time, enable accumulator battery DC to export low tension in time to BMS, allow BMS maintain incessantly and normally work；(3) one the 3rd relay R 3 of increase between electric fan M1 and BMS is used, when the temperature of power battery pack is too high or normal, BMS can be exported control voltage by low-voltage output B1 to the 3rd relay R 3, thus control electric fan M1 and start working or quit work；(3) the second relay R 2 is used can to automatically cut off accumulator battery DC and power to BMS, make BMS quit work when power battery pack temperature is recovered normal, reduce the electric energy loss of accumulator；(4) the first diode D1 and the second diode D2 is used after charging gun pulls out, can to prevent the electric energy of storage capacitor C1 from revealing.
Accompanying drawing explanation
Fig. 1 is the electrical block diagram of the present invention.
Detailed description of the invention
As it is shown in figure 1, the charging cooling system of the batteries of electric automobile group of the present invention includes: BMS, accumulator battery DC, electric fan M1, storage capacitor C1, first relay R the 1, second relay R the 2, the 3rd relay R the 3, first diode D1, the second diode D2, the first fuse FU1 and the second fuse FU2.
Wherein, one end of the positive terminal of the first diode D1 and the first relay R 1 coil all positive poles with vehicle charging interface are connected；The negative pole end of the negative pole end of BMS, the negative pole end of accumulator battery DC and electric fan M1 all negative poles with vehicle charging interface are connected；The positive terminal of BMS is connected with the negative pole end of the first diode D1 and the negative pole of the second diode D2 respectively；Storage capacitor C1 is serially connected between the positive terminal of BMS and negative pole end；The other end ground connection of the first relay R 1 coil；The voltage output end B1 of BMS and one end of the 3rd relay R 3 coil are connected, the other end ground connection of the 3rd relay R 3 coil；The positive pole of the second diode D2 and the movable contact of the second relay R 2 are connected；The normally opened contact of the second relay R 2 and the movable contact of the first relay R 1 are connected, and the normally-closed contact of the first relay R 1 is connected with the positive terminal of accumulator battery DC and the normally opened contact of the 3rd relay R 3 respectively；The movable contact of the 3rd relay R 3 is connected with the positive terminal of electric fan M1 and one end of the second relay R 2 coil respectively；The other end ground connection of the second relay R 2 coil；Also include one；The positive pole of the second diode D2 movable contact with the second relay R 2 after the first fuse FU1 is connected；The movable contact of the 3rd relay R 3 is connected with the positive terminal of electric fan M1 and one end of the second relay R 2 coil after the second fuse FU2 respectively.
The charging cooling system of the batteries of electric automobile group of the present invention is operationally divided into two kinds of situations:
1, when charging station DZ is charged to accumulator battery DC by vehicle charging interface, charging station DZ provides the low-tension supply of 12V or 24V to BMS, BMS is made to start working, now the low-tension supply of charging station DZ is simultaneously through the coil of the first relay R 1, make No. 87 foot Guan Bis of No. 30 feet of movable contact and normally opened contact, now accumulator battery DC cannot pass through normally opened contact 88 foot of the first relay R 1 and powers to BMS, and BMS can only use the low-tension supply that charging station DZ provides.Temperature when BMS detects that accumulator battery DC is charged exceedes a certain when defining value (being assumed to 20 DEG C), voltage output end B1 foot output 12V or the 24V high level (persistently output) of BMS arrives the coil of the 3rd relay R 3, makes No. 30 feet of movable contact and No. 87 foot adhesives of normally opened contact of the 3rd relay R 3.Now the electric current of accumulator battery DC exports to electric fan M1 after the 3rd relay R 3, makes electric fan M1 that accumulator battery DC to carry out work of dispelling the heat.When BMS detect be reduced at a temperature of accumulator battery DC a certain define value time, the voltage output end B1 foot of BMS stops output high level, No. 30 feet of the movable contact of the 3rd relay R 3 and No. 87 feet of normally opened contact and disconnects, and electric fan M1 quits work.
2, disconnect suddenly when charging station DZ charging gun, and accumulator battery DC temperature now is still above a certain value that defines, charging station DZ stops exporting low tension to BMS, now storage capacitor C1(through charging station DZ certain time low pressure charge after) release one short time (within 2s) low-voltage (more than BMS operating power), BMS is enable uninterruptedly to work on, and persistently exported high level by voltage output end B1 foot, making the 3rd relay R 3 persistently close, electric fan M1 the most normally works.And the first relay R 1 now springs back to normally-closed contact No. 88 feet without low tension, No. 30 feet of movable contact from No. 87 feet of normally opened contact because of coil.No. 30 feet of movable contact that the electric current of accumulator battery DC closes through the first relay R 1 and No. 88 feet of normally-closed contact arrive No. 87 feet of normally opened contact of the second relay R 2.The electric current of accumulator battery DC arrives the coil of the second relay R 2 after No. 30 feet of movable contact of the 3rd relay R 3 persistently closed and No. 87 feet of normally opened contact, make No. 30 feet of movable contact and No. 87 foot Guan Bis of normally opened contact of the second relay R 2, make accumulator battery DC electric current arrive BMS, BMS the most normally to work receiving low-voltage.When BMS detect the temperature of accumulator battery DC less than a certain define value time, the voltage output end B1 foot of BMS stops output high level, No. 30 feet of the movable contact of the 3rd relay R 3 and No. 87 feet of normally opened contact disconnect, accumulator battery DC no current is through the 3rd relay R 3, electric fan M1 quits work, No. 30 feet of the movable contact of the second relay R 2 and No. 87 feet of normally opened contact disconnect, and accumulator battery DC cannot be powered to BMS, makes BMS normal power down.
Increasing by the first relay R 1 between charging station DZ and accumulator battery DC, when making to charge normal, accumulator battery DC cannot provide power supply to BMS；Increasing a storage capacitor C1 between charging station DZ and BMS, after making charging station DZ disconnect low voltage power supply by force, BMS remains to maintain the duty of a short time, enables accumulator battery DC to export low-voltage in time to BMS, allows BMS maintain and normally works；At electric fan M1(source of heat release) positive terminal and BMS between increase the 3rd relay R 3, when accumulator battery DC temperature is too high or normal, BMS can instruct electric fan M1 work or stop；Between electric fan M1 and BMS and accumulator battery DC, increase by second relay R 2, when accumulator battery DC temperature is recovered normal, accumulator battery DC can be automatically cut off and power to BMS, make BMS quit work, reduce the loss of accumulator battery DC.
Compared with prior art, the invention has: in charging process or after charging in certain time, timely and effective dispels the heat accumulator battery DC, improves the service life of accumulator battery DC, improves the safety in charging process.
Claims (3)
1. the charging cooling system of a batteries of electric automobile group, it is characterised in that: include BMS, set of cells DC, electric fan M1, storage capacitor C1, first relay R the 1, second relay R the 2, the 3rd relay R the 3, first diode D1 and the second diode D2；The positive terminal of the first diode D1 and one end of the first relay R 1 coil all positive poles with vehicle charging interface are connected；The negative pole end of the negative pole end of BMS, the negative pole end of set of cells DC and electric fan M1 all negative poles with vehicle charging interface are connected；The positive terminal of BMS is connected with the negative pole end of the first diode D1 and the negative pole of the second diode D2 respectively；Storage capacitor C1 is serially connected between the positive terminal of BMS and negative pole end；The other end ground connection of the first relay R 1 coil；The voltage output end B1 of BMS and one end of the 3rd relay R 3 coil are connected, the other end ground connection of the 3rd relay R 3 coil；The positive pole of the second diode D2 and the movable contact of the second relay R 2 are connected；The normally opened contact of the second relay R 2 and the movable contact of the first relay R 1 are connected, and the normally-closed contact of the first relay R 1 is connected with the positive terminal of set of cells DC and the normally opened contact of the 3rd relay R 3 respectively；The movable contact of the 3rd relay R 3 is connected with the positive terminal of electric fan M1 and one end of the second relay R 2 coil respectively；The other end ground connection of the second relay R 2 coil.
The charging cooling system of batteries of electric automobile group the most according to claim 1, it is characterised in that: also include a first fuse FU1；The positive pole of the second diode D2 movable contact with the second relay R 2 after the first fuse FU1 is connected.
The charging cooling system of batteries of electric automobile group the most according to claim 1 and 2, it is characterised in that: also include a second fuse FU2；The movable contact of the 3rd relay R 3 is connected with the positive terminal of electric fan M1 and one end of the second relay R 2 coil after the second fuse FU2 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510295882.3A CN106300475A (en) | 2015-06-03 | 2015-06-03 | A kind of charging cooling system of batteries of electric automobile group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510295882.3A CN106300475A (en) | 2015-06-03 | 2015-06-03 | A kind of charging cooling system of batteries of electric automobile group |
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| CN106300475A true CN106300475A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510295882.3A Pending CN106300475A (en) | 2015-06-03 | 2015-06-03 | A kind of charging cooling system of batteries of electric automobile group |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110962605A (en) * | 2018-09-28 | 2020-04-07 | 株式会社斯巴鲁 | Junction box control device |
| CN113479102A (en) * | 2021-07-19 | 2021-10-08 | 许昌智普新能源科技有限公司 | Circuit for reducing standby power consumption of old charging pile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201805261U (en) * | 2010-07-06 | 2011-04-20 | 浙江吉利汽车研究院有限公司 | Charging system for electric vehicles |
| US20120049788A1 (en) * | 2010-08-30 | 2012-03-01 | Samsung Electro-Mechanics Co., Ltd. | Charge module |
| CN203596651U (en) * | 2013-12-20 | 2014-05-14 | 惠州市亿能电子有限公司 | Low-voltage power supply interlocking circuit of electric vehicle |
-
2015
- 2015-06-03 CN CN201510295882.3A patent/CN106300475A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201805261U (en) * | 2010-07-06 | 2011-04-20 | 浙江吉利汽车研究院有限公司 | Charging system for electric vehicles |
| US20120049788A1 (en) * | 2010-08-30 | 2012-03-01 | Samsung Electro-Mechanics Co., Ltd. | Charge module |
| CN203596651U (en) * | 2013-12-20 | 2014-05-14 | 惠州市亿能电子有限公司 | Low-voltage power supply interlocking circuit of electric vehicle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110962605A (en) * | 2018-09-28 | 2020-04-07 | 株式会社斯巴鲁 | Junction box control device |
| CN110962605B (en) * | 2018-09-28 | 2024-05-10 | 株式会社斯巴鲁 | Junction box control device |
| CN113479102A (en) * | 2021-07-19 | 2021-10-08 | 许昌智普新能源科技有限公司 | Circuit for reducing standby power consumption of old charging pile |
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Application publication date: 20170104 |