Battery Pack Heating Systems and Electric Vehicles
A technology for heating systems and battery packs, used in batteries, secondary batteries, battery temperature control, etc.
Active Publication Date: 2019-12-13
YINLONG ENERGY CO LTD
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0004] Based on this, it is necessary to provide a battery pack heating system and electric vehicle heating cycle problem that is prone to occur in the traditional battery pack heating system
Method used
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[0025] In order to make the purpose, technical solution and technical effect of the present invention clearer, specific embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0026] See figure 1 , the embodiment of the present invention provides a battery pack heating system 10 . The battery pack heating system 10 is used in an electric vehicle 20 . The electric vehicle 20 includes a battery management unit and a potential control unit. The battery pack heating system 10 includes a power supply input end 110 , a power supply output end 120 , a heating branch 200 , a power branch 300 , multiple battery packs, and multiple heating units 420 . One end of the heating branch 200 is connected with a heating switch element 210 . The heating switch element 210 is controlled by...
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The invention discloses a battery pack heating system and an electric vehicle. The battery pack heating system is used for the electric vehicle and comprises a power supply input end, a power supply output end, a heating branch, a plurality of heating units and a power branch, wherein the electric vehicle comprises a battery management unit and a potential control unit, a heating switch componentis connected to one end of the heating branch and is switched on or switched off by control of the battery management unit, the heating units are connected in series to the heating branch, a protection switch component is connected between at least one group of two adjacent heating units and is switched on or switched off by control of the potential control unit, and the power branch and the heating branch are arranged in parallel between the power supply input end and the power supply output end. The protection switch component can be switched on or switched off by control of the potential control unit, and thus, the problem of circulation heating between a battery and the heating units caused by a circuit fault can be effectively solved by the battery pack heating system.
Description
technical field [0001] The invention relates to the technical field of batteries, in particular to a battery pack heating system and an electric vehicle. Background technique [0002] At present, the power source of pure electric vehicles in my country is mainly lithium-ion batteries. Lithium-ion batteries have the best charge and discharge performance and the best service life in the range of 20°C to 45°C. Therefore, in areas where the ambient temperature of the battery pack is used or in colder winters, in order to keep the battery working at an optimal ambient temperature, it is common practice in the industry to add a heating system to the battery pack. When the pure electric vehicle is driving and parking charging, when the temperature of the battery pack is low, the battery pack itself provides electric energy to the heating system, thereby increasing the temperature of the entire battery pack through the heat conduction of the heating sheet, so as to keep the battery...
Claims
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IPC IPC(8): H01M10/615H01M10/625H01M10/63H01M10/6572
CPCH01M10/615H01M10/625H01M10/63H01M10/6572H01M2220/20Y02E60/10
Inventor 刘森才孙涛高宁泽
Owner YINLONG ENERGY CO LTD