Fast switching type power battery group

A power battery pack and fast switching technology, applied in the direction of terminal battery switching devices, etc., can solve the problems of unsatisfactory battery fast charging, potential safety hazards, and increased energy loss, so as to improve safety and reliability, enhance safety, The effect of reducing the charging current

Inactive Publication Date: 2012-10-10
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] However, the above-mentioned solutions all need to charge the battery. However, the discharge rate of the battery used in electric vehicles is about 1C to 2C during normal driving, and the charging current is too large during fast charging, which will increase by 5 to 10 times and cause energy loss. increase, and there are potential safety hazards, which cannot meet the demand for fast charging of batteries

Method used

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  • Fast switching type power battery group
  • Fast switching type power battery group
  • Fast switching type power battery group

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Embodiment Construction

[0035] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0036]The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate...

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Abstract

The invention relates to a fast switching type power battery group which comprises a power bus and single batteries, and a controllable switch. The single batteries are divided into N groups. Each group of single batteries is connected with the power bus, and each group of single batteries comprises M single batteries. M single batteries in each group of single batteries are connected in series in order. N is an integer greater than or equal to 2, and M is an integer greater than 1. The controllable switch is respectively connected with the N groups of single batteries for carrying out switching control on the configuration of the N groups of single batteries, wherein the configuration of the N groups of single batteries comprises serial configuration and parallel configuration. The power battery group can switch between serial configuration and parallel configuration, thus the charging current is effectively reduced, the energy consumption is reduced, the efficiency is improved and the safety is enhanced.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to a fast-switching power battery pack. Background technique [0002] Nowadays, the environmental and energy situation is becoming more and more severe, and all countries have begun to vigorously develop new energy vehicles, especially pure electric vehicles and plug-in electric vehicles. However, a major problem facing electric vehicles today is how to replenish energy. The energy storage element of a traditional internal combustion engine vehicle is generally a fuel tank, and it only takes a few minutes to fill up the fuel at the gas station to complete the energy replenishment; while the energy storage element of an electric vehicle is generally a battery, and the time required for battery charging is relatively long , especially for traditional lead-acid batteries, it often takes 5 to 8 hours to fully charge the battery. Even for the more advanced lithium iron phosphate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/36
Inventor 李建秋韩雪冰卢兰光欧阳明高
Owner TSINGHUA UNIV
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