Battery component disconnection control system, battery component and vehicle having same

Abstract

The invention discloses a battery assembly disconnection control system and a battery assembly and a vehicle thereof. The battery assembly includes a plurality of battery units connected in series, and the disconnection control system includes a manual circuit breaker detachably installed between the battery units in series, A disconnect switch arranged between the battery units, a circuit information sensor arranged in the battery assembly, and a disconnect control module connected with the disconnect switch and the circuit information sensor. The disconnect switch is integrated in the manual circuit breaker and can be triggered by the manual circuit breaker to break the circuit and / or remove from between the battery cells in series. The circuit information sensor is used to detect circuit information and transmit the circuit information to the circuit breaker control module, and the circuit breaker control module is used to generate a first circuit breaker control signal when the circuit information meets a preset fault judgment condition, and the circuit breaker switch is also configured to receive the first circuit breaker It is disconnected when the control signal is disconnected.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing, and in particular relates to a circuit breaker control system applied to a battery assembly, a battery assembly with the circuit breaker control system, and a vehicle using the battery assembly. Background technique [0002] High-voltage systems are key safety devices in automotive applications. In hybrid or electric vehicles, for example, how to ensure that high-voltage power sources (such as inverters or the battery of the engine) can be cut off safely and reliably when high-voltage devices suffer faults extremely important. [0003] A commonly used safety device for cutting off high-voltage circuits is a fuse device. The basic principle of the fuse device is to use the heat generated by the overcurrent of the faulty circuit to blow the fuse in the device to disconnect the circuit. This method requires a long response time, which is not conducive to circuit safety. At least th...

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Problems solved by technology

This method requires a long response time, which is not conducive to circuit safety. At least there are the following problems: first, using the heat of overcurrent current to blow the fuse will cause unnecessary loss of battery energy; second, the fuse in the fuse device depends on the material , Specifications are different, and their aging degrees are also different. Therefore, it is necessary to choose fuses of different materials and specifications according to different service years when selecting. Fuses that perform beyond necessary specifications, resulting in increased cost

In the prior art, there are also a variety of sensing units (such as airbag impact sensors, humidity sensors, impact sensors, etc.) connected with the battery control unit signal. These sensing units can obtain corresponding disconnection signals and then control the fuse through the battery control unit. In this way, the disconnection of the current path of the battery pack is overly dependent on the detection function of the sensor, and in some unavoidable situations, the sensor may fail or work in an abnormal state. Ensure the normal operation of the battery pack disconnection control function, which in turn leads to the risk of damage to the car; in addition, the replacement of the safety device used to cut off the high-voltage circuit in the prior art is also relatively complicated, which takes a lot of time and economic costs

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