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Battery switching device and method for a multi-battery system

A system battery and switching device technology, applied in the direction of secondary batteries, secondary battery repair/maintenance, circuits, etc., can solve the problem of mixed use of battery packs with different characteristics that cannot be realized

Active Publication Date: 2018-11-13
WM MOTOR TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a battery switching device and method for a multi-battery system in view of the problem that a variety of battery packs with different characteristics cannot be mixed in the prior art

Method used

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  • Battery switching device and method for a multi-battery system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: When n is equal to 2, the device includes:

[0044] The controller is used to control the on-state of the main circuit breaker and the slave circuit breaker, and then control the corresponding battery pack to supply power to the powered device;

[0045] The battery pack positive switch is used to receive the positive control signal of the controller, so that the corresponding positive pole of the battery pack is connected to the positive pole of the powered device;

[0046] The battery pack negative switch is used to receive the negative control signal of the controller, so that the corresponding main negative contactor is turned on, so that the negative pole of the battery pack correspondingly connected to the main negative contactor is connected to the negative pole of the powered device;

[0047] 2 battery packs, used for the battery pack connected by the positive switch of the battery pack and the negative switch of the battery pack, the powered device...

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Abstract

The invention relates to the field of electric vehicle equipment and particularly relates to a battery switching device and method of a multi-battery system. Aiming at the problems in the prior art, the invention provides the battery switching device of the multi-battery system. The switching between battery packs can be simply and conveniently carried out through the matching of a main positive contactor, a pre-charging contactor and a plurality of main negative contactors. The plurality of battery packs with different properties are used together so as to provide long-mileage power supply. The battery switching device comprises a controller, a battery pack positive electrode switching-on / off device, a battery pack negative electrode switching-on / off device, a powered device and n battery packs; the battery switching device supplies power to the powered device; positive electrodes of the n battery packs are connected at a common point; the positive electrodes of the n battery packs are connected with the battery pack positive electrode switching-on / off device; negative electrode of the n battery packs are correspondingly connected with the n main negative contactors in the battery pack negative electrode switching-on / off device respectively.

Description

technical field [0001] The invention relates to the field of electric vehicle equipment, in particular to a battery switching device and method for a multi-battery system. Background technique [0002] At present, all batteries of electric vehicles are one type of battery cell, resulting in the characteristics of the battery pack are also fixed. When the chassis power battery is too low to work, the electric vehicle cannot work, resulting in a short mileage of the electric vehicle. Further, even if a battery pack with high-power cells is used, it is impossible to achieve a large capacity at the same time. In the same way, it is difficult to use large-capacity battery packs to achieve high-power use, so that electric vehicles have a single power supply method and cannot provide long-distance power supply. SUMMARY OF THE INVENTION [0003] The technical problem to be solved by the present invention is to provide a battery switching device and method for a multi-battery sys...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42
CPCH01M10/4207H01M2010/4271Y02E60/10
Inventor 寇芯晨钟幸原向建明古自勇李佳楠
Owner WM MOTOR TECH GRP CO LTD
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