This invention involves a battery short-circuit protection circuit installed in a battery-load circuit. In the battery-load circuit, there is a battery and a load RL. The battery and RL form a circuit. The two ends of the battery are positive discharge end P+ and negative discharge end P−, respectively. The battery short-circuit protection circuit is in series with the battery-load circuit. The battery short-circuit protection circuit includes a charge-discharge circuit, a current amplifier circuit, and a current comparator circuit. The charge-discharge circuit includes MOS transistors and a sampling resistor. The current amplifier circuit includes a signal conditioning circuit and a current amplifier. The current comparator circuit includes a current comparator, a current reference circuit for short-circuit protection consisting, a MOS transistor, a diode, a resistor, and an optronics relay.
Battery short-circuit protection circuit
2018-01-16
Patent
Elektronische Ressource
Englisch
IPC: | H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / H01L Halbleiterbauelemente , SEMICONDUCTOR DEVICES / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
Short-circuit protection circuit, power battery pack and vehicle
Europäisches Patentamt | 2022
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