A lithium battery protection system and battery system with load anti-reverse connection
A protection system and reverse connection protection technology, applied in battery overcharge protection, battery overcurrent protection, battery overdischarge protection and other directions, can solve problems such as fire explosion, battery cell, lithium battery protection board load damage, etc.
Active Publication Date: 2020-12-15
SUZHOU XYSEMI ELECTRONICS TECH CO LTD
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Problems solved by technology
[0003] In the prior art, the lithium battery protection board, the charger and the load circuit are connected to a main board, and then the batteries are connected. At this time, if the batteries are reversed due to mistakes, it will lead to reversed batteries and lithium battery protection. The board and the load constitute a discharge loop, and a large current flows through the discharge loop, which can easily lead to damage to the battery cell, lithium battery protection board or load, and even fire and explosion in severe cases.
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[0058] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures. In addition, it can be understood that the unit division in the circuit in this embodiment is only a functional division, and is not a specific limitation. In the actual application process, the unit division can be further divided according to the circuit principle.
[0059] figure 1 is a schematic structural diagram of a battery protection system provided by an embodiment of the present invention, such as figure 1 As shown, the battery protection system includes: a control circuit 30, a switch circuit 20 and a di...
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The invention provides a 0V rechargeable lithium battery protection system with anti-load reverse connection and battery system. The battery protection system includes a control circuit, a switch circuit and a discharge circuit. The control circuit includes a reverse connection protection unit and a control signal generation unit. In the technical solution provided by the embodiment of the present invention, by setting the control signal generating unit and the reverse connection protection unit, the reverse connection protection unit can input the control signal from the control terminal of the reverse connection protection unit and the control signal from the first output terminal of the control signal generation unit. And the control signal logic operation of the second output terminal of the control signal generating unit outputs the first control signal, and the first control signal can control the switch circuit to be turned on or off at the first control terminal of the switch circuit, so as to realize the zero-volt control of the battery Charging and battery reverse polarity protection.
Description
technical field [0001] The invention relates to the technical field of batteries, in particular to a lithium battery protection system with load anti-reverse connection and a battery system. Background technique [0002] The function of the lithium battery protection board is to protect the lithium battery from over-discharge voltage, over-charge voltage, charge over-current, discharge over-current and discharge short circuit. The long service life of lithium battery cannot be separated from the protection of lithium battery protection board. [0003] In the prior art, after the lithium battery protection board, the charger and the load circuit are connected to a main board, and then the battery cell is connected, if the battery cell is reversed due to a mistake, it will lead to the reverse connection of the battery cell and lithium battery protection. The board and the load constitute a discharge loop, and a large current flows through the discharge loop, which can easily c...
Claims
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IPC IPC(8): H02J7/00H02H7/18
CPCH02J7/0034H02J7/00302H02J7/00304H02J7/00306H02H7/18
Inventor 蒋锦茂
Owner SUZHOU XYSEMI ELECTRONICS TECH CO LTD