Detecting system of battery pack and battery power supply system

A technology of detection system and power supply system, which is applied in the direction of battery circuit devices, current collectors, and measuring electricity, etc., and can solve problems such as the inability to judge the connection status of the battery pack, the voltage error at both ends of the battery pack, and the inability of the voltage detection device to accurately detect the voltage, etc.

Active Publication Date: 2012-10-24
DONGGUAN POWERWISE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the voltage drop of the connecting lines 101, 102 and 103 and the voltage drop between the connecting lines 101, 102 and 103 and the pole contact surface, the voltage across the battery pack has a greater error
Furthermore, the detection system of the existing battery pack cannot judge the connection status of the battery pack. When the connecting wires 101, 102, and 103 are in poor contact with the poles, additional energy consumption will be generated due to the increase in the internal resistance of the battery pack.
[0004] Therefore, it is necessary to provide a battery detection system to solve the problem that the voltage detection device in the prior art cannot accurately detect the voltage of each battery cell

Method used

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  • Detecting system of battery pack and battery power supply system
  • Detecting system of battery pack and battery power supply system

Examples

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Embodiment Construction

[0019] See figure 2 , figure 2 A schematic diagram of a detection system for a battery pack according to the first embodiment of the present invention. like figure 2 As shown, the battery pack includes battery cells BT1, BT2, BT3 and BT4 connected in series through connecting wires 213, 223 and 233, and the detection system 20 of the battery pack of the present invention includes: first voltage detection devices 21, 22, 23 and 24 , a second voltage detection device 25 , a processor 26 , and a current detection device 27 . Wherein, the first voltage detection devices 21 , 22 , 23 and 24 correspond to the battery cells BT1 , BT2 , BT3 and BT4 .

[0020] In this embodiment, the first voltage detection device 21 is connected in parallel with the battery unit BT1 through two detection lines 211 and 212, and the detection lines 211 and 212 are directly connected to the poles of the battery unit BT1, so that the first voltage detection device 21 directly detects the battery Th...

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PUM

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Abstract

The invention provides a detecting system of a battery pack. The battery pack comprises a plurality of battery units which are connected in series through connecting wires, the detecting system comprises a plurality of first voltage detection devices corresponding to the battery units, and each first voltage detection device is connected in parallel with a corresponding battery unit through two detecting wires respectively; the detecting wires are directly connected with pole columns of the corresponding battery units to ensure that the first voltage detection devices directly detect the first voltage between the two pole columns of each corresponding battery unit. The invention also provides a battery power supply system. Therefore, by virtue of the detecting system of the battery pack and the battery power supply system, the voltage between two pole columns of each battery unit can be directly detected through the detecting wires, so that the voltage of each battery unit can be accurately detected, and the connection state of the battery pack can be judged.

Description

technical field [0001] The invention relates to the technical field of battery management, in particular to a detection system of a battery pack and a battery power supply system. Background technique [0002] During the use of the battery, the battery is usually used in series to provide a higher output voltage and a larger power capacity to meet the demand for load driving. However, no matter whether it is a lithium rechargeable battery, a lead-acid rechargeable battery or a nickel-metal hydride rechargeable battery, due to the limitation of its process conditions, there are certain differences between the battery cells. Therefore, a voltage detection device is needed to detect the voltage of the battery cell in real time. [0003] See figure 1 , figure 1 It is a battery pack detection system in the prior art. like figure 1 As shown, the detection system 10 for a battery pack includes a plurality of voltage detection devices (not shown). Wherein, the battery pack inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36H02J7/00
Inventor 周智敏
Owner DONGGUAN POWERWISE TECH CO LTD
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