Control method and control system for high-voltage battery, and electric vehicle

A high-voltage battery and control method technology, applied in electric vehicles, battery circuit devices, batteries, etc., can solve the problem of high cost

Active Publication Date: 2017-12-19
BORGWARD AUTOMOTIVE CHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a high-voltage battery control method and system and an electric vehicle to at least solve the problem of high cost caused by using external equipment to heat or dissipate heat for the high-voltage battery when the high-voltage battery is in a low-temperature or high-temperature state in the prior art. technical issues

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  • Control method and control system for high-voltage battery, and electric vehicle
  • Control method and control system for high-voltage battery, and electric vehicle
  • Control method and control system for high-voltage battery, and electric vehicle

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Embodiment 1

[0028] According to an embodiment of the present invention, an embodiment of a method for controlling a high-voltage battery is provided. It should be noted that the steps shown in the flowcharts of the drawings can be executed in a computer system such as a set of computer-executable instructions, and , although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0029] figure 1 is a flowchart of a high-voltage battery control method according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0030] Step S102, detecting the internal temperature of the high voltage battery.

[0031] Step S104, comparing the internal temperature with the first preset temperature and the second preset temperature.

[0032]Specifically, the above-mentioned first preset temperature may be the low temperature of the high-v...

Embodiment 2

[0083] According to an embodiment of the present invention, an embodiment of a control system for a high voltage battery is provided.

[0084] image 3 is a schematic diagram of a high-voltage battery control system according to an embodiment of the present invention, such as image 3 As shown, the system includes:

[0085] The high-voltage battery 10 is provided with a heating resistance wire 11 and a thermopile 12 inside the high-voltage battery 10 , the heating resistance wire 11 is used for heating, and the thermopile 12 is used for converting heat into electric energy.

[0086] Specifically, the heating resistance wires 11 are evenly distributed inside the high voltage battery 10 . The thermopile 12 can be composed of a plurality of parallel or series thermoelectric elements, and the thermoelectric elements can be made of practically valuable semiconductor temperature difference materials, which can convert heat energy into electric energy output power for thermoelectri...

Embodiment 3

[0113] According to an embodiment of the present invention, an embodiment of an electric vehicle is provided, including: the high-voltage battery control system in Embodiment 2.

[0114] According to the above-mentioned embodiments of the present invention, the battery management system 30 detects the internal temperature of the high-voltage battery 10, compares the internal temperature with the first preset temperature and the second preset temperature, and if the internal temperature is less than or equal to the first preset temperature, then control The auxiliary battery 20 supplies power to the heating resistance wire 11 inside the high-voltage battery 10, so that the heating resistance wire 11 heats the high-voltage battery 10. If the internal temperature is greater than or equal to the second preset temperature, the thermopile 12 inside the high-voltage battery 10 is controlled to be a secondary battery. The battery 20 is charged so that the internal temperature of the hi...

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Abstract

The present invention discloses a control method and a control system for a high-voltage battery, and an electric vehicle. The control method comprises: detecting the internal temperature of a high-voltage battery; comparing the internal temperature to a first preset temperature and a second preset temperature; controlling a sub-battery to supply power for the heating resistance wire in the high-voltage battery if the internal temperature is less than or equal to the first preset temperature, such that the heating resistance wire heats the high-voltage battery; and if the internal temperature is greater than or equal to the second preset temperature, controlling the thermoelectric pile in the high-voltage battery to charge the sub-battery. In the prior art, when the high-voltage battery is in the low temperature state or the high temperature state, the application of the external equipment to perform heating or heat dissipating on the high-voltage battery causes the high cost. With the method and the system of the present invention, the technical problem in the prior art can be solved.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a control method and system for a high-voltage battery and the electric vehicle. Background technique [0002] High-voltage batteries are the power source of electric vehicles and the core components of electric vehicles. The performance of batteries is directly related to the performance of electric vehicles. Low temperature will shorten the mileage and increase the charging time. Too low ambient temperature will also have a fatal impact on the life of the battery, greatly shortening the life of the battery. For example, according to the information provided by Boston Battery, a battery with a capacity of 3500mAh, If it works in an environment of -10°C, after 100 charge and discharge cycles, the power of the battery will rapidly decay to 500mAh. Also, the performance of the battery at high temperatures will be greatly reduced, and there will be a risk of explosion and spontaneo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/615H01M10/625H01M10/633H01M10/6571H02J7/32
CPCH01M10/613H01M10/615H01M10/625H01M10/633H01M10/6571H01M2220/20H02J7/32Y02E60/10
Inventor 程琰
Owner BORGWARD AUTOMOTIVE CHINA CO LTD
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