Relay adhesion detection circuit and method and battery management system
A technology for detecting circuits and detecting methods, which is applied in circuit breaker testing, instruments, measuring electricity, etc., and can solve problems such as misjudgment of relay adhesion state.
Pending Publication Date: 2021-03-26
SHENZHEN YINGFEIYUAN TECH CO LTD
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In addition, before the energy storage battery system is powered on at high voltage, if the load also has voltage, it will easily lead to misjudgment of the relay adhesion state
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0040] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.
[0041] see figure 1 ; figure 1 It is a module block diagram of the first embodiment of the relay adhesion detection circuit of the present invention. figure 1 in, U b is the battery voltage, that is, the total input voltage of the relay adhesion detection circuit; U L is the load voltage, that is, the total output voltage of the relay adhesion detection circuit, which can also be called the external terminal voltage; T1 is the total positive relay, that is, the first relay to be tested; T2 is the total negative relay, that is, the second relay to be tested; U LINK+ Is the voltage of the positive terminal of the load relative to the negative terminal of the battery; U LINK - is the voltage of the negative terminal of the load relative t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a relay adhesion detection circuit and method and a battery management system. The circuit comprises a circuit which is characterized in that one end of a first voltage-dividingresistor is connected between the other end of a first to-be-detected relay and the positive output end of the circuit, the other end of the first voltage-dividing resistor is connected with one endof a first control switch, and the other end of the first control switch is connected with the input end of a first channel; the output end of a reference circuit is connected with one end of a firstsampling resistor, the other end of the first sampling resistor is connected with one end of a second control switch, the other end of the second control switch is connected with one end of a second divider resistor, and the other end of the second divider resistor is connected with a circuit between the other end of a second to-be-tested relay and a negative output end; and the other end of the first sampling resistor is also connected with the input end of a second AD channel. After the method is applied, whether the first to-be-tested relay and the second to-be-tested relay are adhered or not can be judged without being matched with other relays. When the load also has voltage, the adhesion state of the relays cannot be misjudged.
Description
technical field [0001] The invention relates to the field of relay adhesion detection, in particular to a relay adhesion detection circuit, method and battery management system of an energy storage battery system and an electric vehicle system. Background technique [0002] The energy storage battery system includes modules such as battery modules, high voltage boxes and BMS. With the continuous popularization of the application of energy storage battery systems, the safety requirements of battery systems are also increasing, especially judging whether the high-voltage relay is stuck is very important to system safety. [0003] In the energy storage battery system, the BMS is responsible for detecting the adhesion state of the high-voltage relay. There are three mainstream detection methods: first, the terminal voltage detection method, that is, the voltage at the outer end of the positive and negative high-voltage relays or the positive high-voltage is collected through the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01R31/327
CPCG01R31/3275
Inventor 肖石伍文江宋炳坤张舜毅尤志毅
Owner SHENZHEN YINGFEIYUAN TECH CO LTD