Protection device for lithium battery group formed by multiple batteries connected in series
A lithium battery pack and protection device technology, applied in battery overcharge protection, battery overcurrent protection, battery circuit devices, etc., can solve problems such as reduced battery life, damaged battery pack, unsafe, etc., to avoid undervoltage, Reasonable structure and easy operation
Inactive Publication Date: 2016-12-21
HEFEI GUOSHENG BATTERY TECH
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Problems solved by technology
However, the lithium battery needs to be prevented from overcharging and over-discharging during use, otherwise the service life of the lithium battery pack will be greatly reduced, and unsafe factors will occur. The lithium battery pack will generate heat during the working process, and if the heat cannot be discharged in time, the battery pack will be damaged. The charge and discharge efficiency will decrease and the battery pack will be damaged
[0003] However, in order to make full use of the battery, it is in the interests of the user to fully charge the battery. However, if it is impossible to know whether the rechargeable battery has been fully charged, and if the battery is fully charged and continues to charge, it is easy to cause the battery to overcharge and reduce the battery life. battery life, or even damage the battery, dangerous
Method used
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[0015] The present invention will be further described below in conjunction with the accompanying drawings.
[0016] As shown in the accompanying drawings, the present invention proposes a multi-series lithium battery pack protection device, which is characterized in that it is provided with a controller 1, a current sampling circuit 2, a voltage sampling circuit 3, a voltage stabilizing circuit 4, and a PTC over-current and over-temperature Protection circuit 5, sound and light alarm 6, timing circuit 7, controller 1 is respectively connected with current sampling circuit 2, voltage sampling circuit 3, voltage stabilizing circuit 4, PTC overcurrent and over temperature protection circuit 5, sound and light alarm 6, timing The circuit 7 is connected, and the current sampling circuit 2 and the voltage sampling circuit 3 are respectively connected with the charging circuit of the battery pack.
[0017] The present invention is also provided with a bluetooth communication circuit...
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The invention relates to the technical field of lithium battery manufacture and specifically a protection device for a lithium battery group formed by multiple batteries connected in series, wherein the protection device which is reasonable in structure and convenient to use can help prolong service life of the lithium battery group; the protection device is characterized by comprising a controller, a current sampling circuit, a voltage sampling circuit, a voltage stabilizing circuit, a PTC over-current and over-temperature protection circuit, an audible-visual annunciator and a timing circuit; the controller is connected with the current sampling circuit, the voltage sampling circuit, the voltage stabilizing circuit, the PTC over-current and over-temperature protection circuit, the audible-visual annunciator and the timing circuit; the current sampling circuit and the voltage sampling circuit are respectively connected with a battery group charging circuit; compared with a protection device of the prior art, the protection device disclosed in the invention is markedly advantaged by reasonable structure, simple and convenient operation, high safety, reliability and the like.
Description
Technical field: [0001] The invention relates to the technical field of lithium battery manufacturing, in particular to a protective device for a multi-series lithium battery pack which is reasonable in structure, convenient to use and capable of effectively improving the service life of the lithium battery pack. Background technique: [0002] Lithium batteries are widely used in digital products because of their high energy storage density and strong battery life. Recently, lithium battery packs have been used for energy storage in electric vehicles and power stations. However, the lithium battery needs to be prevented from overcharging and over-discharging during use, otherwise the service life of the lithium battery pack will be greatly reduced, and unsafe factors will occur. The lithium battery pack will generate heat during the working process, and if the heat cannot be discharged in time, the battery pack will be damaged. The charging and discharging efficiency will de...
Claims
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IPC IPC(8): H02J7/00
CPCH02J7/0029H02J7/00302H02J7/00304H02J7/00306H02J7/0091
Inventor 吴鹏聂亚齐
Owner HEFEI GUOSHENG BATTERY TECH