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Battery-pack leakage-liquid detection system

A detection system and battery pack technology, applied in the application of electrical devices to test fluid tightness and other directions, can solve problems such as unreasonable installation and fixing structure, dangerous electronic devices, and live battery boxes, and achieve easy popularization, accurate results, and easy replacement. Effect

Active Publication Date: 2014-03-26
MICROVAST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the battery module is accommodated in the battery box. Due to the need to take into account the heat dissipation and stability of the battery box, a metal battery box is generally used as a container for the battery module; It is unreasonable. After a period of use, there may be leakage failure. The leaked electrolyte is a conductive organic material. When the electrolyte leaks to the wall of the battery box, the battery pack and the battery box are connected. The battery box is charged, and the high voltage of the battery pack may cause danger to passengers and electronic devices in the electric vehicle, causing safety hazards

Method used

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  • Battery-pack leakage-liquid detection system

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Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the battery leakage detection system provided by the present invention includes a metal battery box 1, a battery pack 11, an input power source 2, a load 3, a voltage detection device 4, a unidirectional diode 5 and a detection switch 6. Group 11, battery box 1, input power supply 2, load 3, voltage detection device 4 and unidirectional diode 5 are connected in series, load 3 selects a resistance of 50kΩ; close detection switch 6, when battery pack 11 works normally, nothing happens When there is liquid leakage, the circuit is regarded as an open circuit, and the voltage detection device 4 has no reading or can only detect a small voltage; if the battery pack 11 is working abnormally and leaks, the reading detected by the voltage detection device 4 shows a higher voltage value At this time, it indicates that there is leakage of battery cells in the battery pack 11 and poor insulation.

Embodiment 2

[0028] Such as figure 1 As shown, the battery pack leakage detection system provided by the present invention includes a metal battery box 1, a battery pack 11, an input power source 2, a load 3, a voltage detection device 4, a unidirectional diode 5, and a detection switch 6. 11. The battery box 1, the input power supply 2, the load 3, the voltage detection device 4 and the unidirectional diode 5 are connected in series, and the load 3 selects a resistance of 100kΩ; close the detection switch 6, when the battery pack 11 works normally, no leakage occurs. When liquid, the circuit is regarded as an open circuit, and the voltage detection device 4 has no reading or can only detect a small voltage; if the battery pack 11 works abnormally and leaks, the reading detected by the voltage detection device 4 shows a higher voltage value. At this time, it indicates that a battery cell in the battery pack 11 has leaked and the insulation is poor.

Embodiment 3

[0030] Such as figure 1 As shown, the battery pack leakage detection system provided by the present invention includes a metal battery box 1, a battery pack 11, an input power source 2, a load 3, a voltage detection device 4, a unidirectional diode 5, and a detection switch 6. 11. The battery box 1, the input power supply 2, the load 3, the voltage detection device 4 and the unidirectional diode 5 are connected in series. The load 3 uses a resistance of 300kΩ; close the detection switch 6, when the battery pack 11 works normally, no leakage occurs. When liquid, the circuit is regarded as an open circuit, and the voltage detection device 4 has no reading or can only detect a small voltage; if the battery pack 11 works abnormally and leaks, the reading detected by the voltage detection device 4 shows a higher voltage value. At this time, it indicates that a battery cell in the battery pack 11 has leaked and the insulation is poor.

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Abstract

The invention provides a battery-pack leakage-liquid detection system which includes a battery pack, a metal battery box which accommodates the battery pack, an input power supply, a load and a voltage detection device. The battery pack, the input power supply, the load and a casing of the battery box are connected serially. The voltage detection device is connected in parallel with the metal battery box or the load. Through adoption of the technical scheme, generation of leakage of the battery pack can be detected and a battery unit in which leakage is generated can be calculated accurately through simple calculation so that replacement of the battery unit is facilitated; and the battery-pack leakage-liquid detection system can be added into a system based on the design of an original battery pack under a condition that the structure of the original battery pack is not changed so that the battery-pack leakage-liquid detection system is convenient to promote and use, simple to operate and accurate in result.

Description

Technical field [0001] The invention relates to a battery pack detection system, in particular to a battery pack leakage detection system. Background technique [0002] Polymer soft packaging lithium-ion batteries have the advantages of high voltage, high specific energy, many cycles of use, and long storage time. After using several battery cells in series and parallel to form a battery module, they can be widely used in electric vehicles, electric bicycles and electric tools And other large and medium-sized electric equipment. [0003] In the prior art, the battery module is contained in a battery box. Due to the need to take into account the heat dissipation capacity and stability of the battery box, a metal battery box is generally used as a container for accommodating the battery module; the lithium ion battery is due to its own defects or a fixed structure. It is unreasonable. After a period of use, there may be leakage failure. The leaked electrolyte is a conductive organic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/40
Inventor 陈艇严国刚王云杰
Owner MICROVAST
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