A storage battery feed protection circuit
A storage battery and power feeding technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems of increasing product purchase costs, increasing the workload of battery maintenance, shortening the service life of batteries, etc., and achieve the effect of reducing maintenance workload
Active Publication Date: 2016-09-14
ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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Problems solved by technology
[0004] In view of this, the present invention provides a battery feed protection circuit to overcome the current urban rail vehicles in the storage and maintenance process of the 110V circuit battery still continues to discharge after undervoltage protection, which increases a large number of The maintenance workload of the battery shortens the service life of the battery and increases the purchase cost of the product
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] The invention discloses a storage battery feed protection circuit, which comprises a storage battery undervoltage protection circuit, a storage battery voltage detection controller, a feed contactor coil controlled by the output voltage of the voltage detection controller, and a feed contactor coil controlled by the feed contactor The switch controlled by the transformer coil, and the cable assembly connecting the above-mentioned electrical components an...
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The invention discloses a storage battery feed protection circuit. The circuit comprises a storage battery under-voltage protection circuit, a storage battery voltage detecting controller, a feed contactor coil, a switch and a cable assembly, wherein the feed contactor coil is controlled by the output voltage of the voltage detecting controller, the switch is controlled by the feed contactor coil, and the cable assembly is connected between the electrical components and a loop. When the voltage of a storage battery is reduced to the feed protection voltage setting value, the output voltage of the voltage detecting controller is lower than the working voltage of the feed contactor coil, and the switch controlled by a feed contactor is used for cutting off all loads of the storage battery. According to the storage battery feed protection circuit, the voltage of the storage battery is detected and monitored through a voltage detecting control circuit, the feed protection voltage setting value is set, the switch controlled by the feed contactor coil automatically cuts off all the loads of the storage battery, secondary protection is carried out on the storage battery after under-voltage protection, the maintaining workload of the storage battery is reduced, the service life of the storage battery is prolonged, and the pushing cost of products is reduced.
Description
technical field [0001] The invention relates to the field of storage battery protection, in particular to a storage battery feed protection circuit. Background technique [0002] At present, the 110V circuit of urban rail vehicles is equipped with a battery under-voltage protection circuit. Specifically, it is set with an under-voltage protection setting value. The under-voltage protection setting value is slightly higher than the termination voltage value of the battery. When the undervoltage protection setting value is reached, the contactor controlled by the undervoltage relay will disconnect the main battery load, but some permanent loads will continue to use electricity. Maintain the discharge state. If the discharge is excessive, it will inevitably lead to battery feeding. In the case of feeding, if the discharge continues, the voltage of the battery will drop rapidly, and if the feeding is serious, the voltage of the battery will even drop to 0V, causing damage to the...
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IPC IPC(8): H02H7/18
Inventor 刘东广吴美玲
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD