CN203631703U - Control circuit of electric car battery heating system - Google Patents

Control circuit of electric car battery heating system Download PDF

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Publication number
CN203631703U
CN203631703U CN201320816299.9U CN201320816299U CN203631703U CN 203631703 U CN203631703 U CN 203631703U CN 201320816299 U CN201320816299 U CN 201320816299U CN 203631703 U CN203631703 U CN 203631703U
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CN
China
Prior art keywords
battery
heating
connected
circuit
relay
Prior art date
Application number
CN201320816299.9U
Other languages
Chinese (zh)
Inventor
刘飞
文锋
阮旭松
余祖俊
陈永茂
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惠州市亿能电子有限公司
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Publication date
Application filed by 惠州市亿能电子有限公司 filed Critical 惠州市亿能电子有限公司
Priority to CN201320816299.9U priority Critical patent/CN203631703U/en
Application granted granted Critical
Publication of CN203631703U publication Critical patent/CN203631703U/en

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Abstract

The utility model relates to a control circuit of an electric car battery heating system. The control circuit comprises a battery, a charging machine, a charging circuit which is connected with the battery and the charging machine, a heating circuit which is connected with a positive electrode and a negative electrode of the charging machine and a battery management system which is used for monitoring, wherein the charging circuit is controlled by two charging relays, and a shunt is connected with the negative electrode of the battery and the second charging relay; the heating circuit comprises two heating relays and a plurality of heating wire modules which are serially connected with one another, and is controlled by the two heating relays, and a thermosensitive switch is arranged between the heating wire module and the second heating relay in a serial connection manner. Compared with the prior art, the control circuit has the advantages that the battery is heated by the charging machine at a low temperature so as to be rapidly heated, the charging machine does not need to be customized, and thus the cost is reduced; when the battery is heated, the battery can be prevented from being damaged under the situation that the heating is out of control through the protection on multiple aspects, and the control circuit is simple and reliable.

Description

A kind of control circuit of batteries of electric automobile heating system

Technical field

The utility model relates to a kind of batteries of electric automobile technical field, specifically a kind of control circuit of batteries of electric automobile heating system.

Background technology

Electric automobile power battery under cryogenic conditions active low, internal resistance large, a little less than acceptable charging current ability, therefore under low temperature condition, the charge-discharge performance of electrokinetic cell is all poor, and that charging performance declines under low temperature condition is particularly evident, impact charges normal.For electrokinetic cell can be charged normal under low temperature condition, need heat to improve its temperature to electrokinetic cell, make it reach suitable temperature and charge again.Prior art mainly contains the scheme of electrokinetic cell heating: 1, utilize car load low-tension supply to heat, this scheme, because the energy that heating needs is larger, may cause on-vehicle battery to be crossed and put, or low-pressure heating available horsepower is little causes heating time longer; 2, utilize the energy of battery own to heat, this scheme can cause shorten the useful life of battery, may cause battery to be crossed and put in the time of component failure, meanwhile, in the time that battery electric quantity is low, can not provide heating; 3, customize specific charger, on charger, increase charging heating pattern, the energy heating that utilizes charger to provide, when general charger output energy, need to confirm that charge port has accessed battery, therefore this scheme need be made layout designs again to charger, and design process complexity and cost are higher.

Utility model content

For above-mentioned prior art, the technical problems to be solved in the utility model is to provide a kind of batteries of electric automobile hyperbaric heating system, control circuit and control method

In order to address the above problem, the control circuit of batteries of electric automobile hyperbaric heating system of the present utility model, a kind of control circuit of batteries of electric automobile heating system, comprise battery, charger, be connected to the charge circuit between battery and charger, the heating circuit being connected with charger both positive and negative polarity, and the battery management system that described charge circuit and heating circuit are monitored, it is characterized in that: described charge circuit is by the first charge relay, the second charge relay control, the first charge relay is connected between anode and charger positive pole, the second charge relay is connected between battery cathode and charger negative pole, battery cathode and and the second charge relay between be connected with shunt, described heating circuit comprises two heater strip modules that add thermal relay and multiple series connection, and described heating circuit adds thermal relay, the second heating Control by first, and first adds between the multiple heater strip modules and charger positive pole that thermal relay is connected on series connection, second adds between the multiple heater strip modules and charger negative pole that thermal relay is connected on series connection, add and between thermal relay, be in series with thermoswitch at heater strip module and second.

Preferably, described heating circuit comprises that one is connected on the first heating fuse F1 adding before thermal relay.

Preferably, described charge circuit comprises that one is connected on the first charge relay charging fuse F2 before.

Preferably, the heater strip module of the multiple series connection in described heating circuit is positioned at the bottom of battery or the surrounding of battery.

Compared with prior art, the utlity model has following advantage: the high-tension electricity that, can provide with charger, to heating of battery, realize Fast Heating, and charger is without customization, reduces costs in the time of the low charging of battery temperature; Two, when heating of battery, many-sided protection makes battery can avoid damaging battery in the situation that adding thermal runaway, and the control circuit of realizing is simple and reliable.

Accompanying drawing explanation

Fig. 1 is the control circuit figure of the batteries of electric automobile hyperbaric heating system of the utility model enforcement.

Embodiment

In order to allow those skilled in the art understand better the technical solution of the utility model, below in conjunction with accompanying drawing, the utility model is further elaborated.

Embodiment of the present utility model as shown in Figure 1, a kind of control circuit of batteries of electric automobile hyperbaric heating system, comprise battery 1, charger 2, be connected to the charge circuit between battery and charger, the heating circuit being connected with charger both positive and negative polarity, and the battery management system that described charge circuit and heating circuit are monitored, charge circuit is by the first charge relay 31, the second charge relay 32 is controlled, the first charge relay 31 is connected between anode and charger positive pole, the second charge relay 32 is connected between battery cathode and charger negative pole, between battery cathode and the second charge relay 32, be connected with shunt 4, described heating circuit comprises two heater strip modules 5 that add thermal relay and multiple series connection, and heating circuit adds thermal relay 61, second by first and adds thermal relay 62 and control, first adds between the multiple heater strip modules and charger positive pole that thermal relay 61 is connected on series connection, second adds between the multiple heater strip modules 5 and charger negative pole that thermal relay 62 is connected on series connection, add and between thermal relay 62, be in series with thermoswitch 7 at heater strip module 5 and second.

Wherein, heating circuit comprises that one is connected on the first heating fuse F1 adding before thermal relay 61.

Wherein, charge circuit comprises that one is connected on the first charge relay 31 charging fuse F2 before.

Wherein, the heater strip module of the multiple series connection in heating circuit is positioned at the bottom of battery or the surrounding of battery.

Heating fuse is connected on heating circuit; Charging fuse is connected on charge circuit.

Wherein, the coil of each relay is all connected to battery management system (not providing in accompanying drawing), controls charge relay and the switching that adds thermal relay by battery management system, and the utility model can be realized with general charger.

In the time that temperature is relatively low, after needing first heating of battery to be heated up, just realize again quick charge, therefore first access heater strip module in charge port, by battery management system and charger proper communication and the less demand current of request one numerical value, control two charge relay closures simultaneously, machine to be charged has after electric current output, then closure adds thermal relay, and time delay disconnects charge relay; Now charger realizes startup, and battery management system provides energy by demand for control electric current, voltage to heater strip; In the time that heating finishes, battery management system is by first closed charge relay, and suitable time-delay cuts off and adds thermal relay simultaneously, charges the battery by demand current, voltage control charger.

Wherein, battery management system is monitored the temperature of each heater strip module by temp probe, when heater strip temperature is during higher than set point, and battery temperature does not still reach while setting heating-up temperature, battery management system reduces electric current demand, makes heating process more stable, avoids heater strip overheated.

Wherein, each heater strip module all carries a thermoswitch, and heater strip excess Temperature and in the situations such as charger is not controlled disconnects heating circuit automatically when limiting temperature that thermoswitch can bear at heater strip.

In addition, heating circuit is independent of charging control loop, in the situation that not monitoring, even if exist two to add simultaneously adhesion of thermal relay and lost efficacy, heater strip still with battery pack isolation, avoid because adding the thermal relay risk that battery was existed put that lost efficacy.

The above is preferred embodiments of the present utility model, not the utility model is done to any pro forma restriction.It should be noted that; in the situation that not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the utility model, but these changes and distortion all should belong to the protection range of the appended claim of the utility model.

Claims (4)

1. the control circuit of a batteries of electric automobile heating system, comprise battery (1), charger (2), be connected to the charge circuit between battery and charger, the heating circuit being connected with charger both positive and negative polarity, and the battery management system that described charge circuit and heating circuit are monitored, it is characterized in that: described charge circuit is by the first charge relay (31), the second charge relay (32) is controlled, the first charge relay (31) is connected between anode and charger positive pole, the second charge relay (32) is connected between battery cathode and charger negative pole, between battery cathode and the second charge relay (32), be connected with shunt (4), described heating circuit comprises two heater strip modules (5) that add thermal relay and multiple series connection, and described heating circuit adds thermal relay (61), second by first and adds thermal relay (62) and control, and first adds between the multiple heater strip modules and charger positive pole that thermal relay (61) is connected on series connection, second adds between the multiple heater strip modules (5) and charger negative pole that thermal relay (62) is connected on series connection, add and between thermal relay (62), be in series with thermoswitch (7) at heater strip module (5) and second.
2. the control circuit of batteries of electric automobile heating system according to claim 1, is characterized in that, described heating circuit comprises that one is connected on first and adds thermal relay (61) heating fuse F1 before.
3. the control circuit of batteries of electric automobile heating system according to claim 2, is characterized in that, described charge circuit comprises that one is connected on the first charge relay (31) charging fuse F2 before.
4. the control circuit of batteries of electric automobile heating system according to claim 3, is characterized in that, the heater strip module of the multiple series connection in described heating circuit is positioned at the bottom of battery or the surrounding of battery.
CN201320816299.9U 2013-12-13 2013-12-13 Control circuit of electric car battery heating system CN203631703U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320816299.9U CN203631703U (en) 2013-12-13 2013-12-13 Control circuit of electric car battery heating system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320816299.9U CN203631703U (en) 2013-12-13 2013-12-13 Control circuit of electric car battery heating system

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CN203631703U true CN203631703U (en) 2014-06-04

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105449763A (en) * 2015-12-16 2016-03-30 天津先众科技有限公司 Charging heating system for electric bicycle lithium ion battery, and control method for charging heating system
CN105449778A (en) * 2015-12-31 2016-03-30 惠州市亿能电子有限公司 Charging control circuit and control method
CN105553012A (en) * 2015-12-31 2016-05-04 惠州市亿能电子有限公司 Low-temperature charging control system and control method
CN106785120A (en) * 2016-12-29 2017-05-31 洛阳宝盈智控科技有限公司 A kind of electric automobile power supply system charging heating control method
CN107953795A (en) * 2017-12-05 2018-04-24 上海航天电源技术有限责任公司 A kind of power battery pack low-temperature charging method
CN108736107A (en) * 2018-05-22 2018-11-02 宁德时代新能源科技股份有限公司 Heating module and battery pack heating means, heating system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105449763A (en) * 2015-12-16 2016-03-30 天津先众科技有限公司 Charging heating system for electric bicycle lithium ion battery, and control method for charging heating system
CN105449778A (en) * 2015-12-31 2016-03-30 惠州市亿能电子有限公司 Charging control circuit and control method
CN105553012A (en) * 2015-12-31 2016-05-04 惠州市亿能电子有限公司 Low-temperature charging control system and control method
CN106785120A (en) * 2016-12-29 2017-05-31 洛阳宝盈智控科技有限公司 A kind of electric automobile power supply system charging heating control method
CN106785120B (en) * 2016-12-29 2019-10-08 洛阳宝盈智控科技有限公司 A kind of electric automobile power supply system charging heating control method
CN107953795A (en) * 2017-12-05 2018-04-24 上海航天电源技术有限责任公司 A kind of power battery pack low-temperature charging method
CN108736107A (en) * 2018-05-22 2018-11-02 宁德时代新能源科技股份有限公司 Heating module and battery pack heating means, heating system

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