Passive balance failure protection circuit and battery pack
A failure protection and passive equalization technology, which is applied in charge equalization circuits, circuits, secondary batteries, etc., can solve problems such as over-discharge of single batteries, and achieve the effects of preventing failures, avoiding over-discharge, avoiding normal use and safe operation
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[0022] battery pack embodiment
[0023] Such as figure 2 As shown, the battery pack in this embodiment includes at least two single cells arranged in series, and a passive equalization fail-safe circuit is connected in parallel at both ends of each single cell. Since the single battery in the battery pack belongs to conventional technology, it will not be described in detail here, and the passive equalization failure protection circuit will be described in detail below.
[0024] figure 2 Take a passive equalization fail-safe circuit in which two single cells are connected in parallel as an example. Such as figure 2 As shown, in the passive equalization fail-safe protection circuit, the equalizing resistor R, the control switch S and the diode D are arranged in series. In general, in order to ensure the normal operation of the protection circuit, the position of the diode D can be adjusted arbitrarily, but the direction of the anode and the cathode cannot be changed, tha...
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