Device for heating battery of electric car and its control method

A battery heating and control method technology, applied in battery circuit devices, electric vehicles, circuit devices, etc., can solve the problems of slow heating speed, inconvenient use, uneven heating of batteries, etc., achieve uniform and fast heating, and ensure heating uniformity. Effect

Active Publication Date: 2012-01-11
奇瑞新能源汽车股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The battery heating devices currently used are all heated by external power sources, which i

Method used

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  • Device for heating battery of electric car and its control method
  • Device for heating battery of electric car and its control method
  • Device for heating battery of electric car and its control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 As shown, the battery heating device of this embodiment includes a battery pack 2 formed by connecting a plurality of battery cells 1, and each battery cell 1 is placed in a heating jacket 3 with an electric heating function, and the positive electrode of the battery pack 2 The first switch 4 is connected to the positive terminal of the charger 5, and the negative pole of the battery pack 2 is connected to the negative terminal of the charger 5 through the second switch 6; the negative pole of the heating jacket 3 is connected to the negative pole of the battery pack 2, and the negative pole of the heating jacket 3 The positive pole is connected to the positive terminal of the charger 5 through the third switch 7; the first switch 4, the second switch 6, and the third switch 7 are all controlled by the battery management system 8, and the battery management system 8 is connected with the battery pack 2 and the charger respectively. 5 connections.

[00...

Embodiment 2

[0025] Such as figure 2 As shown, the battery heating device of this embodiment includes a battery pack 2 formed by connecting a plurality of battery cells 1, and each battery cell 1 is placed in a heating jacket 3 with an electric heating function, and the positive electrode of the battery pack 2 The first switch 4 is connected to the positive terminal of the charger 5, and the negative pole of the battery pack 2 is connected to the negative terminal of the charger 5 through the second switch 6; The negative pole is connected to the negative terminal of the charger 5 through the third switch 7; the first switch 4, the second switch 6, and the third switch 7 are all controlled by the battery management system 8, and the battery management system 8 is connected with the battery pack 2 and the charger respectively. 5 connections.

[0026] Wherein, the heating mantles 3 are connected in parallel after being connected in pairs, and the first switch 4 , the second switch 6 and th...

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PUM

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Abstract

The invention provides a device for evenly heating a battery of an electric car which is convenient to control, and a control method thereof. The battery heating device comprises a battery bag with a plurality of battery monomers which are connected with each other, each battery monomer is placed in a heating sleeve possessing electric heating function, the key point is the anode of the battery bag is connected with a positive terminal of a charger through a first switch, the cathode of the battery bag is connected with a passive terminal of the charger though a second switch; the power supply of the heating sleeve is selectively connected with a power supply circuit of the battery bag or a power supply circuit of the charger through the first switch, the second switch and a third switch the first switch, the second switch and the third switch are controlled by a battery management system, the battery management system is respectively connected with the battery bag and the charger. According to the invention, the device for heating the battery of the electric car uses two power supplies for heating the battery bag, so that the battery bag can be internally and externally heated, and the heating can be uniform and rapid.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to a battery heating device of an electric vehicle and a control method thereof. Background technique [0002] With the advancement of science and technology, the increasing scarcity of oil resources and the improvement of public awareness of environmental protection, electric vehicles have attracted more and more attention. However, there are still some technical bottlenecks in electric vehicles at present, so that they cannot be industrialized. For example: Since the electrolyte of lithium-ion batteries is an organic solute, the discharge capacity of lithium-ion batteries at low temperatures is very poor, and when charged at low temperatures, it has a great impact on the battery life. Therefore, electric vehicles must be equipped with a battery heating device to cope with the low temperature environment. The currently used battery heating devices all adopt...

Claims

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Application Information

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IPC IPC(8): H01M10/50H02J7/00H01M10/615H01M10/625H01M10/657
Inventor 张洪雷张玉荣徐善红苏志高
Owner 奇瑞新能源汽车股份有限公司
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