The invention discloses a battery detection device for a new energy automobile. The battery detection device further comprises a signal detection circuit and a triggering protection circuit, and effectively solves the problem that a lithium battery is overcharged during charging. According to the signal detection circuit, a voltage sensor U1 is used for detecting a voltage signal of a lithium battery E, a resistor R1, a capacitor C1, a resistor R2, a capacitor C2 and an operational amplifier U2B are used for carrying out low-pass filtering on the voltage signal, a triode Q2 and a triode Q3 areused for carrying out buffer amplification on the voltage signal, and meanwhile a resistor R10 is used for detecting a temperature signal of the lithium battery E; then the temperature signal and thevoltage signal are transmitted to the triggering protection circuit, a voltage signal difference value obtained through an operational amplifier U3B and a temperature signal received by a voltage-regulator tube D6 are output to an OR gate U4, the OR gate U4 outputs a high level when the voltage-regulator tube D6 is conducted or a triode Q5 is conducted, and the pin connection state of a relay K1is changed through the triode Q5; and protection is formed when the lithium battery E is charged by the alternating-current voltage source V1.
本发明公开了新能源汽车电池检测装置,所述检测装置还包括信号检测电路、触发保护电路,有效的解决了锂电池在进行充电的时候有过充电的现象发生。本发明的信号检测电路利用电压传感器U1检测锂电池E的电压信号并利用电阻R1、电容C1、电阻R2、电容C2和运放器U2B将电压信号进行低通滤波,并利用三极管Q2、三极管Q3将电压信号进行缓冲放大,同时电阻R10检测到的锂电池E的温度信号,然后温度信号与电压信号传输至触发保护电路,则将通过运放器U3B得到的电压信号差值和稳压管D6接收温度信号输出到或门U4上,或门U4在稳压管D6导通或三极管Q5导通时输出高电平,并通过三极管Q5改变继电器K1的引脚连接状态,在交流电压源V1为锂电池E充电时形成保护。
Battery detection device for new energy automobile
新能源汽车电池检测装置
2020-12-25
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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