A relay control module with adhesion detection function

Abstract

This utility model specifically relates to a relay control module with adhesion detection function. The control module includes: a relay control unit, a relay unit, a signal sampling unit, and a logic processing unit. The relay control unit is connected to both the relay unit and the logic processing unit. The signal sampling unit is also connected to both the relay unit and the logic processing unit. The logic processing unit receives signal information from the relay control unit and the signal sampling unit, and outputs detection information based on the parsed signal information. This utility model uses the combined signal information from the signal sampling unit and the relay control unit to identify the cause of relay adhesion, improving the accuracy and reliability of relay adhesion judgment. Furthermore, this utility model achieves reliable judgment of relay adhesion using only the signal sampling unit, the signal sampling unit, and the logic processing unit, offering advantages such as simple and stable structure and low implementation cost.

Description

Technical Field

[0001] This utility model relates to the field of charging technology, specifically to a relay control module with adhesion detection function. Background Technology

[0002] A relay is an electrical control device that causes a predetermined step change in the controlled variable in the electrical output circuit when the change in the input quantity (excitation quantity) reaches a specified requirement. It has an interactive relationship between the control system (also known as the input circuit) and the controlled system (also known as the output circuit), playing roles in automatic adjustment, safety protection, and circuit switching in the circuit. The most typical example is the widespread use of relays for switching the main circuit of on-board rechargeable batteries in new energy vehicles. While the use of relays improves the convenience of switching the main circuit of on-board rechargeable batteries in new energy vehicles, it also brings the risk of short circuits. For example, if the relay is not properly connected and becomes stuck, this could lead to a short circuit in the main circuit, component failure, or even a fire.

[0003] In existing technologies, battery relay sticking detection often involves directly detecting the sticking state of the relay contacts. While this method effectively acquires information about the relay's sticking status, it only indicates whether the relay itself has stuck; it cannot determine the cause of the sticking, such as whether it's system control sticking or sticking of the relay itself. The cause of the relay sticking will affect the accuracy and timeliness of relay fault diagnosis. Utility Model Content

[0004] This invention addresses the technical problems of low accuracy and reduced timeliness in the existing technology of directly judging relay faults by relay adhesion status. It provides a relay control module with adhesion detection function, which has the advantages of simple and reliable circuit structure and high judgment accuracy.

[0005] This utility model provides a relay control module with adhesion detection function, including: a relay control unit, a relay unit, a signal sampling unit, and a logic processing unit;

[0006] The relay control unit is connected to both the relay unit and the logic processing unit.

[0007] The signal sampling unit is connected to both the relay unit and the logic processing unit.

[0008] The logic processing unit is used to receive signal information from the relay control unit and the signal sampling unit, and output detection information based on the parsing of the signal information.

[0009] Specifically, one of the main technical concepts of this utility model is to identify the cause of relay sticking by combining the signal information from the signal sampling unit and the relay control unit, thereby improving the accuracy and reliability of relay sticking judgment. Furthermore, this utility model can reliably determine relay sticking using only a signal sampling unit, a signal sampling unit, and a logic processing unit, offering advantages such as simple and stable structure and low implementation cost.

[0010] Furthermore, the control module includes: a microcomputer unit;

[0011] The relay control unit and the logic processing unit are respectively connected to the microcomputer unit.

[0012] Furthermore, the relay control unit includes a positive control unit and a negative control unit;

[0013] Accordingly, the signal sampling unit includes a positive sampling unit and a negative sampling unit.

[0014] Furthermore, the positive sampling unit includes a positive sampling circuit, a filtering circuit, and a voltage divider circuit that are arranged sequentially and connected to each other.

[0015] The positive sample comparison circuit is connected to the logic processing unit, and the voltage divider circuit is connected to the relay unit.

[0016] Specifically, another technical concept of this utility model is to identify the sticking of the positive electrode of the relay through a positive electrode comparison circuit, a filter circuit, and a voltage divider circuit.

[0017] Furthermore, the voltage divider circuit includes a first resistor and a second resistor;

[0018] The first resistor is connected to both the filter circuit and the relay unit.

[0019] One end of the second resistor is connected between the positive sample comparison circuit and the first resistor, and the other end is grounded.

[0020] Optionally, the negative sampling unit includes a negative sampling circuit and a voltage signal conversion circuit that are arranged sequentially and connected.

[0021] The negative electrode sampling circuit is connected to the logic processing unit, and the voltage signal conversion circuit is connected to the relay unit.

[0022] Specifically, another key technical concept of this utility model is to identify the sticking of the positive terminal of the relay through a negative electrode comparison circuit and a voltage signal conversion circuit.

[0023] Furthermore, the voltage signal conversion circuit includes a diode and a third resistor arranged sequentially and being turned on;

[0024] The diode is connected to the negative electrode sampling circuit, and the third resistor is connected to the relay unit.

[0025] Optionally, the logic processing unit includes a positive processing circuit and a negative processing circuit.

[0026] Optionally, the microcomputer unit includes an MCU controller.

[0027] Optionally, the control module includes a signal isolation unit;

[0028] The signal isolation unit is disposed between the signal sampling unit and the logic processing unit.

[0029] Specifically, another possible technical concept of this utility model is that by setting up a signal isolation unit, the signal input from the signal sampling unit to the logic processing unit is processed to ensure the reliability of signal transmission, thereby improving the accuracy of relay sticking judgment.

[0030] In summary, this utility model provides a relay control module with adhesion detection function, which has at least the following advantages: This utility model identifies the cause of relay adhesion by combining signal information from the signal sampling unit and the relay control unit, thus improving the accuracy and reliability of relay adhesion judgment. Furthermore, this utility model can reliably determine relay adhesion using only a signal sampling unit, a signal sampling unit, and a logic processing unit, offering advantages such as simple and stable structure and low implementation cost. Attached Figure Description

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0032] Figure 1 A schematic diagram of the structure of a relay control module with adhesion detection function provided in one embodiment of this utility model;

[0033] Figure 2 A schematic diagram of the structure of a relay control module with adhesion detection function is provided in another embodiment of this utility model;

[0034] Figure 3A schematic diagram of the structure of a relay control module with adhesion detection function is provided in another embodiment of this utility model. Detailed Implementation

[0035] The following is in conjunction with the appendix Figures 1 to 3 The present invention will be described in detail below.

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0037] The main technical concept of this utility model is to improve the accuracy and timeliness of relay adhesion detection by combining the signal information of the relay control unit and the signal sampling unit, and then using the logic processing unit to distinguish between the adhesion of the relay itself and the adhesion of the system control.

[0038] Example 1

[0039] Please see Figure 1 The diagram shows a schematic of a relay control module with adhesion detection function according to an embodiment of the present invention. The relay control module includes a relay control unit, a relay unit, a signal sampling unit, and a logic processing unit. The relay control unit is connected to both the relay unit and the logic processing unit. The signal sampling unit is also connected to both the relay unit and the logic processing unit. The logic processing unit receives signal information from the relay control unit and the signal sampling unit, and outputs detection information based on the parsing of the signal information. The working principle of this invention is that the relay control unit sends opening / closing state signal information to the logic processing unit while controlling the opening and closing of the relay unit. The signal sampling unit obtains the opening / closing state signal information of the relay unit by sampling the signal from the relay unit. If the opening / closing state signal information of the relay control unit matches the opening / closing state signal information of the relay unit obtained by the signal sampling unit, it indicates that the relay unit is stuck under system control; otherwise, it indicates that the relay unit is stuck due to its own inherent adhesion.

[0040] It is worth explaining that a relay unit refers to a circuit that includes a relay, a relay control unit refers to a circuit that controls the opening and closing of the positive and negative terminals of the relay unit, a signal sampling unit refers to a circuit that collects electrical signals from the positive and negative terminals of the relay unit, and a logic processing unit refers to a circuit that processes the signal information of the relay circuit and the signal information of the signal sampling unit.

[0041] Example 2

[0042] Based on Example 1, please refer to Figure 2 The diagram shows a schematic of a relay control module with adhesion detection function according to another embodiment of the present invention. The control module further includes: a microcomputer unit; a relay control unit and a logic processing unit are respectively connected to the microcomputer unit. The relay control unit includes a positive control unit and a negative control unit; correspondingly, the signal sampling unit includes a positive sampling unit and a negative sampling unit. The positive sampling unit includes a positive comparison circuit, a filter circuit, and a voltage divider circuit arranged sequentially and connected; the positive comparison circuit is connected to the logic processing unit, and the voltage divider circuit is connected to the relay unit. The negative sampling unit includes a negative comparison circuit and a voltage signal conversion circuit arranged sequentially and connected; the negative comparison circuit is connected to the logic processing unit, and the voltage signal conversion circuit is connected to the relay unit. The technical concept of Example 2 lies in distinguishing between the positive and negative terminals of the relay unit. Its working principle is as follows: At the positive terminal of the relay, the positive control circuit controls the opening and closing of the positive terminal of the relay unit and simultaneously sends the opening and closing status signal information to the positive processing circuit. The positive sampling circuit samples the opening and closing status of the positive terminal of the relay unit and sends the sampled structure signal information to the positive processing circuit. The positive processing circuit then distinguishes the adhesion of the positive terminal of the relay unit based on the signal information sent by the positive control circuit and the signal information sent by the positive sampling circuit. The adhesion of the negative terminal of the relay unit can be understood by referring to the working principle of the positive terminal, and will not be elaborated here.

[0043] Optionally, the positive sampling unit includes a positive sampling circuit, a filtering circuit, and a voltage divider circuit arranged sequentially and connected to each other; the positive sampling circuit is connected to the logic processing unit, and the voltage divider circuit is connected to the relay unit.

[0044] Furthermore, the voltage divider circuit includes a first resistor and a second resistor; the first resistor is connected to both the filter circuit and the relay unit; one end of the second resistor is connected between the positive sampling circuit and the first resistor, and the other end is grounded (see...). Figure 3 The diagram shown is a structural schematic of a relay control module with adhesion detection function provided in another embodiment of this utility model.

[0045] Optionally, the negative sampling unit includes a negative sampling circuit and a voltage signal conversion circuit that are arranged sequentially and connected to each other; the negative sampling circuit is connected to the logic processing unit, and the voltage signal conversion circuit is connected to the relay unit.

[0046] Furthermore, the voltage signal conversion circuit includes a diode and a third resistor arranged sequentially and being turned on; the diode is connected to the negative terminal of the sampling circuit, and the third resistor is connected to the relay unit (see [link to relevant documentation]). Figure 3 (As shown).

[0047] The present invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the present invention and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A relay control module with adhesion detection function, characterized in that, include: Relay control unit, relay unit, signal sampling unit, and logic processing unit; The relay control unit is connected to both the relay unit and the logic processing unit. The signal sampling unit is connected to both the relay unit and the logic processing unit. The logic processing unit is used to receive signal information from the relay control unit and the signal sampling unit, and output detection information based on the parsing of the signal information; The relay control unit includes a positive control unit and a negative control unit; Accordingly, the signal sampling unit includes a positive sampling unit and a negative sampling unit.

2. A relay control module with adhesion detection function as described in claim 1, characterized in that, The control module includes: a microcomputer unit; The relay control unit and the logic processing unit are respectively connected to the microcomputer unit.

3. A relay control module with adhesion detection function as described in claim 1, characterized in that, The positive sampling unit includes a positive sampling circuit, a filtering circuit, and a voltage divider circuit that are arranged sequentially and connected to each other. The positive sample comparison circuit is connected to the logic processing unit, and the voltage divider circuit is connected to the relay unit.

4. A relay control module with adhesion detection function as described in claim 3, characterized in that, The voltage divider circuit includes a first resistor and a second resistor; The first resistor is connected to both the filter circuit and the relay unit. One end of the second resistor is connected between the positive sample comparison circuit and the first resistor, and the other end is grounded.

5. A relay control module with adhesion detection function as described in claim 1, characterized in that, The negative sampling unit includes a negative sampling circuit and a voltage signal conversion circuit that are arranged sequentially and connected. The negative electrode sampling circuit is connected to the logic processing unit, and the voltage signal conversion circuit is connected to the relay unit.

6. A relay control module with adhesion detection function as described in claim 5, characterized in that, The voltage signal conversion circuit includes a diode and a third resistor arranged sequentially and being turned on; The diode is connected to the negative electrode sampling circuit, and the third resistor is connected to the relay unit.

7. A relay control module with adhesion detection function as described in claim 1, characterized in that, Accordingly, the logic processing unit includes a positive processing circuit and a negative processing circuit.

8. A relay control module with adhesion detection function as described in claim 2, characterized in that, The microcomputer unit includes an MCU controller.

9. A relay control module with adhesion detection function as described in claim 1, characterized in that, The control module includes a signal isolation unit; The signal isolation unit is disposed between the signal sampling unit and the logic processing unit.

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