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Large-power positive temperature coefficient (PTC) heating system for power battery and control method of large-power PTC heating system

A technology of power battery and heating system, which is applied in the field of automobile control, can solve the problems such as the inability of the on-board charger to provide such high power and the inability to use slow charging for heating.

Pending Publication Date: 2019-05-14
SHANDONG KINGOLD AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] As the heating time of low-temperature fast charging becomes shorter and shorter, the power of PTC is getting bigger and bigger, which has exceeded 3.3kW. In the case of mode 2 slow charging, the on-board charger cannot provide such a large power, resulting in the inability to use slow charging at low temperature. charge heating

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  • Large-power positive temperature coefficient (PTC) heating system for power battery and control method of large-power PTC heating system
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  • Large-power positive temperature coefficient (PTC) heating system for power battery and control method of large-power PTC heating system

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Embodiment Construction

[0040] In order to further illustrate the various embodiments, the present invention provides accompanying drawings, which are part of the disclosure of the present invention, and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments, for reference Those of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0041] According to an embodiment of the present invention, a high-power PTC heating system for a power battery and a control method thereof are provided.

[0042] Now in conjunction with accompanying drawing and specific embodiment the present invention is further described, as Figure 1-3 As shown, the high-power PTC heating system f...

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Abstract

The invention discloses a large-power positive temperature coefficient (PTC) heating system for a power battery and a control method of the large-power PTC heating system. The large-power PTC heatingsystem comprises a charger module, a battery management system module, a battery module and a heating module, the charger module is connected with the battery management system module through a firstCAN line, the battery management system module is connected with the battery module through a second CAN line, and the battery module is connected with the heating module through a third CAN line. Thelarge-power PTC heating system has the beneficial effects that in a slow charging mode, only part of the total power of PTCs is used, it can be ensured that the PTC1 is normally heated and charged byan onboard charger, meanwhile, in a fast charging mode, a non-onboard charger can be normally used for simultaneously heating the PTC1 and the PTC2, the low-temperature heating time and the chargingtime are not affected, and in the slow charging mode, energy of the power battery is not adopted to heat the PTCs.

Description

technical field [0001] The invention relates to the field of automobile control, in particular to a high-power PTC heating system for power batteries and a control method thereof. Background technique [0002] The chemical reaction activity of lithium-ion power batteries decreases in low-temperature environments, and the migration of lithium ions slows down. If it is forced to charge at low temperature, the negative electrode of the battery will form "lithium precipitation", causing short circuit swelling or even fire and explosion. Therefore, when charging a lithium-ion power battery at a low temperature, the power battery must be heated first, and the power battery can be charged only after the temperature of the power battery rises. At present, the mainstream power battery heating device is mainly a PTC (Positive Temperature Coefficient, positive temperature coefficient, the same below) element. [0003] According to the patent A Power Battery Heating System (CN20162083...

Claims

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Application Information

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IPC IPC(8): B60L58/27H01M10/615H01M10/625H01M10/637H01M10/6571
CPCY02T10/70Y02E60/10
Inventor 贾少清朱刚王世良王世豪
Owner SHANDONG KINGOLD AUTOMOBILE CO LTD