Fast detection system for damaged battery in secondary lithium ion battery pack and detection method thereof
A lithium-ion battery pack and detection system technology, applied in the detection field, can solve problems such as complicated procedures and damage to the normal operation of the battery pack, and achieve the effect of simple process, low cost, and consistency
Inactive Publication Date: 2017-08-18
DALIAN UNIV OF TECH
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[0004] However, this method brings an additional process to the battery assembly process (thousands of MOSFET switches need to be connected in series), and the isolation test analysis of each segment is still required during operation, and the process is relatively complicated; The single battery that can test the current, this type of single battery also needs to be found in time during use, so as not to damage the normal operation of the entire battery pack
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[0029] The present invention will be further described below in conjunction with the accompanying drawings. Such as Figure 1-2 As shown, the damaged battery fast detection system in the secondary lithium-ion battery pack includes a plurality of temperature detection devices 7 and an administrator control terminal, and the plurality of temperature detection devices 7 are connected to the administrator control terminal through a wireless network; the described The temperature detection device 7 is pasted on the outer surface of the single battery 6, and the administrator control terminal is installed in the cab;
[0030] The temperature detection device 7 includes a temperature sensor 1, a label sensor 2, a microprocessor 3, a power supply module 4 and a wireless transmission module 5; the temperature sensor 1 and the label sensor 2 are respectively connected to the microprocessor 3; The microprocessor 3 is connected with the administrator control terminal through the wireless...
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The invention discloses a fast detection system for a damaged battery in a secondary lithium ion battery pack and a detection method thereof. The system comprises a plurality of temperature detecting devices and an administrator controlling terminal. The plurality of temperature detecting devices are connected with the administrator controlling terminal via a wireless network; each temperature detecting device is adhered to the external surface of a single battery cell; each temperature detecting device comprises a temperature sensor, a label sensor, a microprocessor, a power supply module and a wireless transmitting module. According to the fast detection system for the damaged battery in a secondary lithium ion battery pack, an operational state of the single battery cell is detected in real time by measuring the temperature variation of each single battery cell in the battery pack, and whether the cell is attenuated or damaged is further judged according to the size of the range of the temperature variation, so as to find in time an abnormal working battery cell and carry out maintenance, thus maintaining the consistency of the performance of battery cells in the entire battery pack, improving the working efficiency, prolonging the service life and improving the use safety of the entire battery pack. The process of the invention is easy to operate and is low in cost, thus is suitable for mass production.
Description
technical field [0001] The invention relates to detection technology, in particular to a detection system and detection method for a damaged battery in a secondary lithium-ion battery pack Background technique [0002] A secondary lithium-ion battery used for power drive is usually assembled by connecting thousands of single secondary lithium-ion batteries (referred to as single batteries) in series and parallel. However, abnormal damage to more than one single battery often occurs during use. These damaged single batteries will cause the entire battery pack to fail to work normally, resulting in the scrapping of the entire battery module, which brings great waste and Customer maintenance costs. However, it is very time-consuming and labor-intensive to quickly find one or more single cells that are working abnormally in thousands of battery packs. Therefore, there is an urgent need for a simpler and faster detection method to detect in situ (that is, without disassembling t...
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Login to View More IPC IPC(8): H01M10/42
CPCH01M10/42H01M10/4285Y02E60/10
Inventor 李晓干赵里佳薛文东夏晖刘晓光
Owner DALIAN UNIV OF TECH