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Vehicle power battery charging system and charging method

A technology for automotive power batteries and charging systems, applied in battery circuit devices, electric vehicles, current collectors, etc., can solve the damage of batteries and their control circuit contact wires and electronic components, system performance, durability, safety effects, Battery and line temperature rise and other problems, to achieve the effect of reducing loop current, equalizing charging, and reducing charging loss

Active Publication Date: 2018-10-02
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When multiple battery packs are charged in parallel, the internal resistance of the battery becomes smaller, and when there is a large voltage difference between the battery packs, a large loop current will be generated between the battery packs and the peripheral circuit, and the temperature of the battery and the circuit will also increase rapidly. If the temperature increases, it may lead to melting of the battery and its control circuit contacts, damage to the wires and electronic components, and will have a great impact on the performance, durability and safety of the system.

Method used

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  • Vehicle power battery charging system and charging method
  • Vehicle power battery charging system and charging method
  • Vehicle power battery charging system and charging method

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Embodiment Construction

[0024] Please refer to figure 1 , the vehicle power battery charging system 1 of the preferred embodiment of the present invention includes a power battery 10, a charger 20, a battery manager 30 and a CAN network ( figure 2 ).

[0025] The power battery 10 includes multiple battery packs connected in parallel, represented by battery packs 1 to n in the figure, wherein n is a natural number greater than 1. Each battery pack further includes one or more battery cells, represented by battery cells 1 to m in the figure, wherein m is a natural number greater than 1. It should be noted that there is no limitation on the connection mode of the multiple battery cells in the battery pack, which can be connected in series, parallel or a combination thereof, and the connection mode of the battery cells in each battery pack can also be different. In addition, the number of battery cells in each battery pack can also be different, and the battery pack can also include only one battery c...

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PUM

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Abstract

The invention discloses a safety charging system and a charging method for an automobile power battery. The safety charging system for the automobile power battery comprises a power battery, a charger and a battery manager, wherein the power battery comprises a plurality of battery packs; each battery pack comprises at least one battery monomer; each battery pack and the charger construct a charging circuit; a switch is connected between each battery pack and the charger; and the battery manager is used for acquiring the voltage parameters and temperature parameters of each battery monomer in real time, processing these parameters, and controlling the switch-on / off of each switch according a processing result to charge a selected battery pack or stop charging, namely, charge the battery packs in sequence. Due to the adoption of the charging system and the charging method, the circuit current of system hardware can be lowered, the effects of balancing charging and reducing charging loss are achieved, and the safety is enhanced.

Description

technical field [0001] The invention relates to the field of charging an automobile power battery, in particular to a charging system and a charging method for an automobile power battery. Background technique [0002] New energy vehicles, especially electric vehicles, have no exhaust gas generated by internal combustion engine vehicles, and do not produce exhaust pollution. They are very beneficial to environmental protection and air cleanliness. They are almost "zero pollution" and are the development direction of future automobiles. As the power source of electric vehicles, the power battery is a key component that affects the performance of electric vehicles. According to the principle of electricity, connecting multiple batteries in series can obtain a higher working voltage, and connecting multiple batteries in parallel can obtain greater capacity and current. The power battery has multiple battery cells, so the battery cells are usually grouped in series and then con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
Inventor 徐江江李田田金启前由毅吴成明冯擎峰
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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