Power battery warm-keeping heating system and control method

A power battery and heating system technology, applied to secondary batteries, circuits, electrical components, etc., can solve problems such as increased failure rate, difficulty in ensuring consistency, and poor reliability, so as to reduce temperature, improve reliability, and reduce failure rate Effect

Active Publication Date: 2016-06-29
WEICHAI POWER CO LTD
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] At present, one way is to install a film on the outside of the battery cell. When the environment and battery temperature are high (summer or the battery works at high power for a long time), the film still covers the battery cell and cannot quickly dissipate the heat of the battery body.
In addi

Method used

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  • Power battery warm-keeping heating system and control method
  • Power battery warm-keeping heating system and control method
  • Power battery warm-keeping heating system and control method

Examples

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Example Embodiment

[0028] The specific embodiments of the invention will be further described below in conjunction with the drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

[0029] In the embodiment of the present invention, the description is made through the interaction between the data sending end and the data receiving end.

[0030] figure 1 It is a schematic diagram of the structure of the power battery heating system in the prior art, such as figure 1 As shown, the system includes a battery body and a heating jacket made of heating film wrapped around the battery body. The battery management system BMS monitors the temperature of the lithium-ion battery body and outputs control signals to the temperature controller, which receives After the control signal is reached, the heating jacket is heated or stopped.

[0031] It can be seen from the figu...

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Abstract

The invention discloses a power battery warm-keeping heating system and a control method. The system comprises a power battery pack, a heating warm-keeping layer, a first temperature sensor, a second temperature sensor, a controller and an unfolding-folding device, wherein the heating warm-keeping layer wraps the periphery of the power battery pack; the first temperature sensor is arranged on an inner side of the power battery pack, and used for detecting temperatures of power batteries; the second temperature sensor is arranged on an outer side of the heating warm-keeping layer, and used for detecting an environmental temperature; and the controller is connected with the first temperature sensor, the second temperature sensor and the unfolding-folding device, and used for controlling unfolding and folding of the heating warm-keeping layer according to the temperature(s) detected by the first temperature sensor and/or the second temperature sensor. Through adoption of the power battery warm-keeping heating system and the control method, heating of the power battery pack can be controlled according to an overall temperature of the power battery pack and an external environmental temperature, so that a failure rate is lowered, and the reliability of power battery heating is enhanced.

Description

technical field [0001] The invention relates to the technical field of battery heating and heating, in particular to a power battery heating and heating system and a control method. Background technique [0002] The power battery is an automotive battery with the best energy density and power density at this stage. With the development of power battery technology and technology, it plays a pivotal role in the field of new energy vehicles today. In cold weather areas, the power battery of new energy vehicles is often in a low temperature state. Since the electrolyte of the power battery is generally an organic solute, the discharge capacity at low temperature is very poor. At this time, the power battery is likely to affect the function of the vehicle or cause battery performance. Decrease or even damage; therefore, the power battery is generally heated up through the intake heating device (warm air). [0003] At present, one way is to install a film on the outside of the ba...

Claims

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Application Information

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IPC IPC(8): H01M10/617H01M10/625H01M10/635H01M10/637H01M10/647H01M10/6571
CPCH01M10/617H01M10/625H01M10/635H01M10/637H01M10/647H01M10/6571Y02E60/10
Inventor 刘焕东刘信奎潘凤文郗富强丁广军
Owner WEICHAI POWER CO LTD
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