Contactor working state detection method and device, storage medium and vehicle
A technology of working status and detection method, which is applied in the direction of measuring devices, electrical devices, vehicle components, etc., can solve the problems of insulation detection and collection circuit interference, heavy voltage collection workload, and long voltage collection time, so as to reduce workload, The effect of shortening the voltage acquisition time and flexible voltage acquisition
Inactive Publication Date: 2021-05-28
BEIJING BORGWARD AUTOMOBILE CO LTD
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Problems solved by technology
[0004] At present, the voltage collection of the contactor is to collect the voltage by switching different reference points, and all the voltages are collected to the application layer at one time. In this way, the voltage collection workload is large and the collection time is long, resulting in a delay in the collected voltage. , not necessarily the real-time voltage in the current state
Moreover, due to the long time of voltage acquisition, it may also interfere with the insulation detection acquisition circuit
Method used
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[0066] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.
[0067] Before describing in detail the method for detecting the working state of the contactor provided by the present disclosure, the circuit of the contactor will be described first.
[0068] figure 1 It is a schematic diagram of a contactor circuit shown according to an exemplary embodiment. Such as figure 1 As shown, the contactor circuit includes a power battery, a positive contactor, a pre-charging contactor, a pre-charging resistor R, a fast-charging positive contactor, a fast-charging interface, a load, a negative contactor, and a fast-charging negative contactor. Wherein, the load includes a negative output terminal and a positive output terminal,...
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The invention relates to a contactor working state detection method and device, a storage medium and a vehicle. The detection method comprises the steps of: obtaining a control instruction of a contactor control circuit; determining a target voltage list corresponding to the control instruction according to the control instruction; acquiring voltage according to the target voltage list; determining the current working state of a contactor corresponding to the control instruction according to the collected voltage; and determining whether the current working state is consistent with a target working state of the contactor corresponding to the control instruction. Since the voltage included in the target voltage list corresponding to the control instruction is acquired, all voltages in a circuit are not needed to be acquired as the prior art; and therefore, the voltage acquisition is more flexible, the voltage acquisition time is shortened, the high-voltage power-on or power-off can be controlled in time, and the power-on and power-off control efficiency is improved. Moreover, the workload of voltage acquisition is reduced, so that the service life of a voltage acquisition element can be prolonged to a certain extent.
Description
technical field [0001] The present disclosure relates to the technical field of battery management, and in particular, to a detection method, detection device, storage medium, and vehicle for the working state of a contactor. Background technique [0002] In the battery management system of the vehicle power battery, the contactor control mainly ensures the normal power on and off of the vehicle; monitors whether the current and voltage of the pre-charging process are abnormal, etc. When the vehicle is abnormally powered on or off or during the pre-charging process, the contactor can be reliably disconnected to ensure the safety of the battery and the vehicle. This shows the importance of contactor control. [0003] The state judgment of most contactors is to collect the voltage at both ends of the contactor, and judge according to the control signal of the contactor at the same time. Some manufacturers also use contactors with auxiliary contacts for direct judgment. Howev...
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IPC IPC(8): G01R31/327G01R19/00B60L3/00B60L58/10
CPCG01R31/3277G01R19/0084B60L3/0023B60L58/10Y02T10/70
Inventor 闫丽娟赵祥日
Owner BEIJING BORGWARD AUTOMOBILE CO LTD