A short-circuit-proof and sparking power battery module testing device

Abstract

The utility model relates to battery performance detection technical field, concretely is a kind of power battery module testing device of preventing short-circuit sparking, including power battery module, electrode, test circuit, test interface and anti short-circuit mechanism, electrode is arranged on the surface of power battery module, test interface is electrically connected with test circuit, and anti short-circuit mechanism is arranged on the surface of test interface;Anti short-circuit mechanism includes positioning unit, micro-current detection unit and quick power-off unit, and positioning unit includes positioning sleeve, and positioning sleeve is fixedly connected with the surface of test interface.The utility model, by setting anti short-circuit mechanism, adopt multiple protection mechanism, improve the docking accuracy of test interface and electrode, reduce the short-circuit risk caused by alignment deviation from source, and can find short-circuit hidden danger in advance and issue early warning, can also cut off power in extremely short time, effectively prevent short-circuit sparking problem in power battery module testing process, effectively improve the security and reliability of equipment for this.

Description

Technical Field

[0001] This utility model relates to the field of battery performance testing technology, and in particular to a power battery module testing device that prevents short circuits and sparks. Background Technology

[0002] During the testing of power battery modules, the connection between the low-voltage test harness interface and the module is prone to short circuits due to poor contact, misalignment, damage to the test harness itself, or incorrect use of the harness. This can lead to arcing, which can damage the test equipment and the power battery module, and may also cause safety accidents.

[0003] The inventors discovered that although the testing devices currently on the market have certain safety protection measures, they have significant shortcomings in preventing short circuits and arcing: First, the docking guidance accuracy is low, making it difficult to ensure the precise alignment of the test interface and the electrode; second, there is a lack of an effective short circuit pre-detection mechanism, making it impossible to provide timely warnings before a short circuit occurs; and third, the emergency response when a short circuit occurs is slow, failing to quickly contain the spread of danger.

[0004] To address the lack of efficient short-circuit and arcing prevention measures in power battery module testing devices, existing technologies suffer from low docking guidance accuracy, lack of effective short-circuit pre-detection mechanisms, and slow emergency response when a short circuit occurs, which can easily lead to safety hazards during testing. Therefore, improvements are needed. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing power battery module testing devices lack efficient short-circuit and arcing prevention measures, and to propose a power battery module testing device that prevents short-circuit and arcing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a power battery module testing device for preventing short circuits and arcing, comprising a power battery module, electrodes, a test circuit, a test interface, and a short circuit prevention mechanism, wherein the electrodes are disposed on the surface of the power battery module, the test interface is electrically connected to the test circuit, and the short circuit prevention mechanism is disposed on the surface of the test interface;

[0007] The short-circuit protection mechanism includes a positioning unit, a micro-current detection unit, and a fast power-off unit. The positioning unit includes a positioning sleeve, which is fixedly connected to the surface of the test interface. The electrode is inserted into the inner wall of the positioning sleeve, and the surface of the positioning sleeve has an inclined surface.

[0008] A permanent magnet is fixedly installed on the surface of the positioning sleeve, an iron sheet is fixedly connected to the surface of the power battery module, and a buffer spring is sleeved and connected to the surface of the positioning sleeve.

[0009] Furthermore, the iron sheet is arranged around the electrode, and the permanent magnet is arranged at the end of the positioning sleeve, with the permanent magnet magnetically connected to the surface of the iron sheet.

[0010] Furthermore, one end of the buffer spring is fixedly connected to the surface of the test interface, and the other end of the buffer spring is fixedly connected to a collar, which is slidably connected to the surface of the positioning sleeve.

[0011] Furthermore, the micro-current detection unit is connected in series in the test circuit. The micro-current detection unit includes a high-precision ammeter and a signal processor. The high-precision ammeter is disposed on the surface of the signal processor and is electrically connected to the signal processor.

[0012] Furthermore, a distance sensor is fixedly installed on the inner wall of the positioning sleeve, and the distance sensor is electrically connected to the signal processor.

[0013] Furthermore, an indicator light and a buzzer are fixedly mounted on the surface of the signal processor, and both the indicator light and the buzzer are electrically connected to the signal processor.

[0014] Furthermore, the rapid power-off unit includes a high-speed relay and a power cut-off switch, wherein the high-speed relay is electrically connected to the power cut-off switch and the high-speed relay is electrically connected to the signal processor.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. In this utility model, by setting a short-circuit protection mechanism, when the test interface is plugged into the power battery module, the magnetic attraction of the permanent magnet and the iron sheet is used to guide the positioning sleeve and the electrode to quickly align, reducing alignment deviation. Then, the inclined guide is used to ensure that the electrode can be smoothly inserted into the guide sleeve. The set buffer spring and collar ensure that when the test interface is plugged into the power battery module, the collar contacts the power battery module first and the buffer spring is used to appropriately buffer the impact force, avoiding interface damage and alignment misalignment caused by hard contact. The distance sensor on the inner wall of the positioning sleeve detects the distance between the test interface and the electrode. When the distance is less than the set value, the micro-current detection unit is triggered to start working. The high-precision ammeter monitors the micro-current change in the test circuit in real time. When an abnormal increase in micro-current is detected, it is determined that there is a short circuit risk. The signal processor immediately issues a warning signal using indicator lights and buzzers to remind the operator to deal with it in time. At the same time, when a short circuit signal is detected, the high-speed relay uses the power cut-off switch to cut off the main power supply, quickly curbing the spread of danger.

[0017] 2. In this utility model, by setting up a short-circuit protection mechanism and adopting multiple protection mechanisms, the docking accuracy between the test interface and the electrode is improved, reducing the risk of short circuit caused by misalignment from the source. It can also detect potential short circuit hazards in advance and issue early warnings, and can cut off the power supply in a very short time, effectively preventing short circuit and arcing problems during the testing process of the power battery module. This effectively improves the safety and reliability of the equipment. Attached Figure Description

[0018] Figure 1 A three-dimensional structural diagram of a power battery module testing device for preventing short-circuit arcing is provided for this utility model.

[0019] Figure 2 A side view of the anti-short circuit mechanism in a power battery module testing device for preventing short circuit arcing is provided for this utility model.

[0020] Figure 3 This utility model proposes a test device for power battery modules to prevent short-circuit arcing. Figure 2 A magnified structural diagram at point A;

[0021] Figure 4 This utility model provides a cross-sectional view of the anti-short-circuit mechanism in a power battery module testing device for preventing short-circuit arcing.

[0022] Figure 5 This utility model proposes a test device for power battery modules to prevent short-circuit arcing. Figure 4 A magnified structural diagram at point B.

[0023] Legend:

[0024] 1. Power battery module; 2. Electrode; 3. Test circuit; 4. Test interface; 5. Short circuit protection mechanism; 51. Positioning unit; 511. Positioning sleeve; 512. Inclined surface; 513. Permanent magnet; 514. Iron sheet; 515. Buffer spring; 516. Collar; 52. Micro-current detection unit; 521. High-precision ammeter; 522. Signal processor; 523. Distance sensor; 524. Indicator light; 525. Buzzer; 53. Quick power-off unit; 531. High-speed relay; 532. Power cut-off switch. Detailed Implementation

[0025] Please see Figures 1-5 This utility model provides a technical solution: a power battery module testing device for preventing short circuits and arcing, including a power battery module 1, an electrode 2, a test circuit 3, a test interface 4, and a short circuit prevention mechanism 5. The electrode 2 is disposed on the surface of the power battery module 1, the test interface 4 is electrically connected to the test circuit 3, and the short circuit prevention mechanism 5 is disposed on the surface of the test interface 4.

[0026] The following section will explain the specific setup and function of its short-circuit protection mechanism 5.

[0027] In this implementation scheme: the short circuit prevention mechanism 5 includes a positioning unit 51, a micro current detection unit 52 and a fast power-off unit 53. The positioning unit 51 includes a positioning sleeve 511. The positioning sleeve 511 is fixedly connected to the surface of the test interface 4. The electrode 2 is inserted into the inner wall of the positioning sleeve 511. The surface of the positioning sleeve 511 is provided with a bevel 512.

[0028] A permanent magnet 513 is fixedly installed on the surface of the positioning sleeve 511, an iron sheet 514 is fixedly connected to the surface of the power battery module 1, and a buffer spring 515 is sleeved and connected to the surface of the positioning sleeve 511.

[0029] The effects achieved by the above components are as follows: the positioning sleeve 511 is set to facilitate the insertion of the test interface 4 and the electrode 2, and it is made of insulating material, which is safe and reliable; the inclined surface 512 is set to serve as a guide, making it easier for the electrode 2 to be inserted into the positioning sleeve 511; the permanent magnet 513 and the iron plate 514 are set to use magnetic attraction to guide the positioning sleeve 511 and the electrode 2 to quickly align and reduce alignment deviation; the buffer spring 515 is set to buffer the impact force and avoid interface damage and alignment misalignment caused by hard contact.

[0030] Specifically, the iron sheet 514 is arranged around the electrode 2, and the permanent magnet 513 is arranged at the end of the positioning sleeve 511. The permanent magnet 513 is magnetically connected to the surface of the iron sheet 514.

[0031] The effect achieved by the above components is that the attraction force between the permanent magnet 513 and the iron sheet 514 is moderate, which can assist in positioning without causing docking difficulties due to excessive attraction force.

[0032] Specifically, one end of the buffer spring 515 is fixedly connected to the surface of the test interface 4, and the other end of the buffer spring 515 is fixedly connected to a collar 516, which is slidably connected to the surface of the positioning sleeve 511.

[0033] The effect achieved by the above components is as follows: during docking, the collar 516 first contacts the power battery module 1, and the buffer spring 515 buffers the impact during docking. After docking, due to the adsorption and positioning of the permanent magnet 513 and the iron plate 514, the buffer spring 515 will not affect the stability of the connection.

[0034] Specifically, the micro-current detection unit 52 is connected in series in the test circuit 3. The micro-current detection unit 52 includes a high-precision ammeter 521 and a signal processor 522. The high-precision ammeter 521 is disposed on the surface of the signal processor 522 and is electrically connected to the signal processor 522.

[0035] The effects achieved by the above components are as follows: The high-precision ammeter 521 is set to monitor the micro-current changes in the circuit in real time. When an abnormal increase in micro-current is detected (exceeding the preset threshold), it is determined that there is a short circuit risk. The signal processor 522 is set to facilitate the processing of signals from the high-precision ammeter 521 and the distance sensor 523 and to control the indicator light 524, the buzzer 525, the high-speed relay 531 and the power cut-off switch 532.

[0036] Specifically, a distance sensor 523 is fixedly installed on the inner wall of the positioning sleeve 511, and the distance sensor 523 is electrically connected to the signal processor 522.

[0037] The aforementioned components achieve the following effect: the distance sensor 523 uses infrared ranging to detect the distance between the test interface 4 and the module electrode 2. When the distance is less than a set value (e.g., 5mm), the micro-current detection unit 52 is triggered to start working.

[0038] Specifically, an indicator light 524 and a buzzer 525 are fixedly mounted on the surface of the signal processor 522, and both the indicator light 524 and the buzzer 525 are electrically connected to the signal processor 522.

[0039] The above components achieve the following effect: the indicator light 524 and the buzzer 525 are set up so that when the micro-current detection unit 52 detects a short circuit risk, it will immediately issue a warning signal to remind the operator to deal with it in time.

[0040] Specifically, the fast power-off unit 53 includes a high-speed relay 531 and a power cut-off switch 532. The high-speed relay 531 is electrically connected to the power cut-off switch 532, and the high-speed relay 531 is electrically connected to the signal processor 522.

[0041] The effect achieved by the above components is that when a short circuit signal (current exceeds the short circuit threshold) is detected, the high-speed relay 531 uses the power cut-off switch 532 to cut off the main power supply within 10ms, quickly curbing the spread of danger.

[0042] Working principle: By setting up a short-circuit protection mechanism 5, when the test interface 4 is plugged into the power battery module 1, the magnetic attraction of the permanent magnet 513 and the iron plate 514 guides the positioning sleeve 511 to quickly align with the electrode 2, reducing alignment deviation. The inclined surface 512 then guides the electrode 2 to ensure smooth insertion into the guide sleeve. The buffer spring 515 and collar 516 ensure that when the test interface 4 is plugged into the power battery module 1, the collar 516 contacts the power battery module 1 first, and the buffer spring 515 appropriately buffers the impact force, avoiding interface damage and alignment misalignment caused by hard contact. The positioning mechanism... The distance sensor 523 on the inner wall of the sleeve 511 detects the distance between the test interface 4 and the electrode 2. When the distance is less than the set value, the micro-current detection unit 52 is triggered to start working. The high-precision ammeter 521 monitors the micro-current change in the test circuit 3 in real time. When an abnormal increase in micro-current is detected, it is determined that there is a risk of short circuit. The signal processor 522 immediately uses the indicator light 524 and the buzzer 525 to issue a warning signal to remind the operator to deal with it in time. When a short circuit signal is detected, the high-speed relay 531 uses the power cut-off switch 532 to cut off the main power supply and quickly curb the spread of danger.

[0043] By setting up a short-circuit protection mechanism 5 and adopting multiple protection mechanisms, the docking accuracy between the test interface 4 and the electrode 2 is improved, reducing the risk of short circuits caused by misalignment from the source. It can also detect potential short circuits in advance and issue warnings, and can cut off the power supply in a very short time, effectively preventing short circuits and sparking during the testing of the power battery module 1. This effectively improves the safety and reliability of the equipment.

Claims

1. A power battery module testing device for preventing short-circuit arcing, comprising a power battery module (1), electrodes (2), a test circuit (3), a test interface (4), and a short-circuit protection mechanism (5), characterized in that: The electrode (2) is disposed on the surface of the power battery module (1), the test interface (4) is electrically connected to the test circuit (3), and the anti-short circuit mechanism (5) is disposed on the surface of the test interface (4); The short-circuit protection mechanism (5) includes a positioning unit (51), a micro-current detection unit (52), and a fast power-off unit (53). The positioning unit (51) includes a positioning sleeve (511). The positioning sleeve (511) is fixedly connected to the surface of the test interface (4). The electrode (2) is inserted into the inner wall of the positioning sleeve (511). The surface of the positioning sleeve (511) is provided with a bevel (512). A permanent magnet (513) is fixedly installed on the surface of the positioning sleeve (511), an iron sheet (514) is fixedly connected to the surface of the power battery module (1), and a buffer spring (515) is sleeved and connected to the surface of the positioning sleeve (511).

2. The power battery module testing device for preventing short-circuit arcing according to claim 1, characterized in that: The iron sheet (514) is arranged around the electrode (2), and the permanent magnet (513) is arranged at the end of the positioning sleeve (511). The permanent magnet (513) is magnetically connected to the surface of the iron sheet (514).

3. The power battery module testing device for preventing short-circuit arcing according to claim 1, characterized in that: One end of the buffer spring (515) is fixedly connected to the surface of the test interface (4), and the other end of the buffer spring (515) is fixedly connected to a collar (516), which is slidably connected to the surface of the positioning sleeve (511).

4. The power battery module testing device for preventing short-circuit arcing according to claim 1, characterized in that: The microcurrent detection unit (52) is connected in series in the test circuit (3). The microcurrent detection unit (52) includes a high-precision ammeter (521) and a signal processor (522). The high-precision ammeter (521) is disposed on the surface of the signal processor (522) and is electrically connected to the signal processor (522).

5. The power battery module testing device for preventing short-circuit arcing according to claim 4, characterized in that: A distance sensor (523) is fixedly installed on the inner wall of the positioning sleeve (511), and the distance sensor (523) is electrically connected to the signal processor (522).

6. The power battery module testing device for preventing short-circuit arcing according to claim 4, characterized in that: An indicator light (524) is fixedly mounted on the surface of the signal processor (522), and a buzzer (525) is fixedly mounted on the surface of the signal processor (522). Both the indicator light (524) and the buzzer (525) are electrically connected to the signal processor (522).

7. The power battery module testing device for preventing short-circuit arcing according to claim 4, characterized in that: The fast power-off unit (53) includes a high-speed relay (531) and a power cut-off switch (532). The high-speed relay (531) is electrically connected to the power cut-off switch (532), and the high-speed relay (531) is electrically connected to the signal processor (522).

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