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Power battery heating system and control method thereof

A power battery and heating system technology, which is applied to secondary batteries, circuits, electrical components, etc., can solve the problems of complex structure of heating system and high energy consumption of heating system, and achieve the effect of simple structure design, simple system and normal start-up

Inactive Publication Date: 2019-07-02
青岛市比亚迪汽车有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a power battery heating system and a control method thereof, which can effectively solve the problems in the prior art that the power battery heating system has a complex structure, needs to add a special power battery heating circuit, and has high energy consumption in the power battery heating system

Method used

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  • Power battery heating system and control method thereof
  • Power battery heating system and control method thereof
  • Power battery heating system and control method thereof

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Embodiment Construction

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0037] The power battery heating system and its control method proposed by the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0038] Such as figure 1 As shown, the power battery heating system in the prior art includes a driving motor cooling system and a power battery heating system. Specifically, the drive motor cooling system includes a drive motor, a drive motor controller, an expansion tank, a radiator, and a water pump; the power battery heating system includes a...

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Abstract

The invention provides a power battery heating system, which comprises a power battery, a battery management module, a driving motor, a driving motor controller and a driving motor cooling system. When the temperature of the power battery is lower than a preset temperature value, the power battery management module makes the power battery connected to the driving motor cooling system, the drivingmotor controller makes the driving motor stall, and the driving motor cooling system uses the heat generated by the stalling of the driving motor to heat the power battery. Thus, the purpose of heating the power battery through the driving motor and the driving motor cooling system is achieved without the need for an additional power battery heating system.

Description

technical field [0001] The invention relates to the field of power battery heating, in particular to a heating system and a control method for heating a power battery by using a vehicle drive motor to stall. Background technique [0002] With the continuous development of new energy vehicles, low carbon, energy saving, and emission reduction have become the core competitiveness of automotive technology. The power battery is an important part of new energy vehicles, which is greatly affected by temperature, and the performance of the power battery drops significantly at low temperatures. A pure electric vehicle thermal management system is disclosed in the prior art, which is characterized in that it includes a motor system cooling circuit, a battery system low-temperature heat dissipation circuit, a battery system higher temperature cooling circuit, a battery system charging heating circuit, and a passenger compartment heater The heating circuit and the cooling circuit of t...

Claims

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Application Information

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IPC IPC(8): H01M10/615H01M10/625H01M10/635H01M10/663
CPCH01M10/615H01M10/625H01M10/635H01M10/663B60L58/27Y02E60/10
Inventor 姜昆明梁丰收左杰林超杨伟
Owner 青岛市比亚迪汽车有限公司
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