Power battery heating control method and device before charging, and charger
A power battery and heating control technology, applied in the power battery heating control before charging, charger field, can solve the problems of charging time increase, heating system not working normally, heating film heating power can not be adjusted, etc., to increase system robustness Effect
Active Publication Date: 2021-04-13
BEIJING ELECTRIC VEHICLE
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Problems solved by technology
[0006] The embodiment of the present invention provides a power battery heating control method, device and charger before charging to solve the problem that the heating power of the heating film in the prior art cannot be adjusted, which leads to the failure of the heating system to work normally under the premise that the power battery cannot be discharged. During the charging process, when the power of the heating film exceeds the power of the power supply equipment, the charging time will increase due to the discharge of the power battery or the problem that only high-power power supply equipment can be used
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[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0042] The invention aims at the non-adjustable heating power of the heating film in the prior art, which leads to the failure of the heating system to work normally under the premise that the power battery cannot be discharged, and the power battery discharge causes the power battery to discharge during the charging process because the power of the heating film exceeds the power of the power supply equipment. To solve the problem that charging time will increase or only high-power power supply equipment can be selected, a power battery heating control method, device and charger before charging are provided.
[0043] Such as figure 1 As shown, the power battery heating control method before charging in the embodiment of the present invention include...
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The invention provides a power battery heating control method and device before charging, and a charger, and relates to the field of power battery heating control. The power battery heating control method before charging comprises the following steps: acquiring power supply parameters of power supply equipment, charging parameters of a vehicle-mounted charger and resistance of a heating film; determining that the power battery pack needs to be heated before charging according to the power supply parameters of the power supply equipment; judging whether the power battery pack needs to be heated before being charged in a voltage regulation mode or not; adjusting the output voltage of the power supply equipment according to the power supply parameters of the power supply equipment, the charging parameters of the vehicle-mounted charger and the resistance of the heating film when it is determined that the voltage regulation mode needs to be entered, and obtaining the adjusted voltage; and heating the power battery to a cut-off temperature according to the adjusted voltage. According to the embodiment of the invention, the power of the heating film of the power battery is adjusted in an output voltage regulation mode, so that the heating stability of the power battery is ensured, and the robustness of the system is improved.
Description
technical field [0001] The invention relates to the field of power battery pack heating, in particular to a power battery heating control method, device and charger before charging. Background technique [0002] With the increasing scarcity of energy, new energy vehicles have become the choice and development trend of more and more people. As an important part of electric vehicles, batteries need to be further improved in all aspects of performance. The current technology trend has led to the increasing power of the power battery, and the requirement for the heating rate is also getting higher and higher, so the power of the heating film is getting higher and higher. Even the power of some heating films has reached 3.1kW, which is twice the power of the minimum AC power supply equipment stipulated by the national standard. [0003] The power battery heating device at the present stage is generally a battery heating sheet bonded to the power battery and the power battery, we...
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IPC IPC(8): B60L58/27B60L53/62
CPCB60L58/27B60L53/62Y02T10/7072Y02T90/12
Inventor 刘文月王伟代康伟梁海强易迪华
Owner BEIJING ELECTRIC VEHICLE