Battery leakage detection connector with elastic protection

Abstract

The utility model relates to battery pack detection technical field, especially point to take elastic protection's battery leakage detection connector, solved the sensor tail wire position in prior art easy to enter water and influence sensor use problem, and detection connector includes fixed buckle, and the fixed buckle is elastically connected with box body, and the box body is slidably connected with fixed buckle, and the box body is connected with box cover, and the box body and box cover cooperation form inverted U type channel, be equipped with detection assembly in the box body, and the wire of detection assembly passes inverted U type channel and extends the box body. Advantageous effects are: the inverted U type channel that box body and box cover cooperation makes the wire need to pass twice bending to extend the box body, avoid liquid to enter the box body downwards through the wire, inverted U type channel can also shield the top of box body, improved the waterproofness of box body top, prevent liquid from entering the box body from the top of box body and contact detection assembly, thereby guarantee the accuracy of sensor judging signal, improved the reliability of battery leakage detection.

Description

Technical Field

[0001] This utility model relates to the field of battery pack testing technology, and in particular to a battery leakage detection connector with elastic protection. Background Technology

[0002] Currently, with the rapid development of the automotive industry and the increasing number of new energy vehicles, battery packs, as the energy storage and output source for new energy vehicles, are being used more and more. Leakage is a quality hazard affecting the normal function and lifespan of battery packs. Early and timely detection of battery pack leakage is crucial for the function and lifespan of both the new energy vehicle and the battery pack. Traditional battery pack safety testing uses a connector with positive and negative terminal holes. The internal parts of these holes are molded into mounting platforms, allowing the metal plug terminals to be fixed into the positive and negative terminal holes respectively. The tail of the metal plug terminals is simultaneously connected to wires and sensors via riveting. When battery fluid leaks, a path is formed between the two plug terminals through the battery fluid, triggering a sensor to indicate leakage. The connector is fixed to the corresponding mounting holes on the battery pack using its own retaining clips or assembly retaining clips. Because the connector needs to be installed close to the bottom of the battery pack, which is mounted on the vehicle chassis, deformation or impact to the bottom of the battery pack can cause upward force on the connector, posing a risk of the retaining clips coming loose. If the retaining clips loosen or fall off, it can lead to problems such as insensitive battery pack detection, delayed response, or even failure.

[0003] The prior art patent with publication number CN116793405A discloses a detection device, a battery, and a power supply device, including: a base and a sensor. The base includes one of the guide member and the slider. The sensor is used to connect to the base. The sensor includes a sensor housing, which includes the other of the guide member and the slider. The guide member is used to guide the sliding direction of the slider so that the sensor can move relative to the base in a first direction. The guide member includes a slide rail and a groove. The slider includes a slider and a protrusion. The slide rail is used to guide the sliding direction of the slider, and the groove is used to guide the sliding direction of the protrusion.

[0004] The sensor in the aforementioned detection device is connected to the base and can move relative to the base in a first direction. This allows the sensor to move relative to the base in the first direction when the detection device is subjected to impacts, reducing the probability of sensor damage. However, the design of the sensor's tail wire position is flawed, making it easy for the wire to come into direct contact with the external environment. This allows liquid to enter the casing along the wire, affecting the normal operation of the sensor. Once liquid enters the casing and comes into contact with the detection components, it interferes with the sensor's judgment signal, making it unable to accurately detect battery leakage, reducing the reliability of battery leakage detection, and posing a safety hazard to the battery. Utility Model Content

[0005] This invention proposes a battery leakage detection connector with elastic protection, which solves the problem in the prior art where water easily enters the sensor tail wire position, affecting the use of the sensor.

[0006] The technical solution of this utility model is implemented as follows:

[0007] The battery leakage detection connector with elastic protection includes a retaining clip with a housing elastically connected to it. The housing slides in conjunction with the retaining clip, and a cover is snapped onto the housing, forming an inverted U-shaped channel. A detection component is housed inside the housing, and a wire from the detection component passes through the inverted U-shaped channel and extends out of the housing. The wire is bent twice as it extends out of the housing to prevent liquid from flowing downwards into the housing. Simultaneously, the inverted U-shaped channel shields the top of the housing, preventing liquid from falling into the housing and improving its waterproofness. This also prevents liquid from entering the housing from above and contacting the detection component, which could affect the sensor's signal.

[0008] The box body is provided with a wire outlet groove on the upper side. The box cover includes a box cover body. A horizontally arranged waterproof plate is connected to the upper end of the box cover body. A positioning plate is connected to the waterproof plate. The positioning plate is arranged parallel to the box cover body. The box cover body and the positioning plate are located on the front and rear sides of the box body, respectively. The wire outlet groove, the box cover body, the waterproof plate and the positioning plate cooperate to form an inverted U-shaped channel.

[0009] The detection component includes a PCB board with wire pads, and wires are connected to the wire pads. Each wire includes a metal core and a plastic sheath, with the plastic sheath encasing the metal core inside; the wires are soldered to the wire pads.

[0010] The PCB board is equipped with sensors and probes, and the probes are electrically connected to the sensors. The probes include a positive probe and a negative probe. When the battery pack leaks, the liquid creates a path between the positive and negative probes, and the sensor generates a leakage signal. The leakage signal is transmitted to the display screen or alarm to trigger an alarm.

[0011] The box contains a PCB mounting slot, and the PCB board is snapped into the PCB mounting slot. A PCB positioning pin is provided within the PCB mounting slot, and PCB positioning holes are provided on the PCB board, which mate with the PCB positioning pin. The shape of the PCB mounting slot corresponds to that of the PCB board.

[0012] The PCB mounting slot has a PCB locking key on its side wall, which engages with the PCB board for positioning. The housing has a clearance groove that corresponds to the position of the PCB locking key. The PCB locking key engages with the surface of the PCB board to prevent it from detaching from the mounting slot. Furthermore, the clearance groove facilitates the elastic retraction of the PCB locking key, thus simplifying PCB board installation.

[0013] The box body is provided with a wedge-shaped block, and the box lid body is provided with a wedge-shaped mounting groove, which slides in conjunction with the wedge-shaped block. The wedge-shaped block and the wedge-shaped mounting groove are arranged laterally, and the box lid is connected to the box body by sliding.

[0014] The lid body is equipped with a lid lock, which engages with the side wall of the PCB mounting slot. After the lid slides into place on the box body, it is limited by the engagement of the lid lock with the side wall of the PCB mounting slot, preventing the lid from retracting and ensuring that the lid is stably installed on the box body.

[0015] The box cover body is provided with an installation pin, and the box body is provided with a locking groove. The installation pin and the locking groove are inserted and engaged.

[0016] The fixing buckle is provided with an installation groove and a limiting groove. The end of the installation groove is provided with a spring thrust plate. The box body is provided with a vibration damping column and a limiting step. The vibration damping column is slidably engaged with the installation groove. A spring is provided between the vibration damping column and the spring thrust plate. The limiting groove is engaged with the limiting step.

[0017] The beneficial effects of this invention are as follows: the inverted U-shaped channel formed by the box body and the box cover requires the wire to be bent twice before it can extend out of the box body, effectively preventing liquid from entering the box body through the wire. At the same time, the inverted U-shaped channel can also shield the top of the box body, greatly improving the waterproofness of the top of the box body and preventing liquid from entering the box body from the top and contacting the detection components. This ensures the accuracy of the sensor's signal judgment, improves the reliability of battery leakage detection, and enhances the safety of battery use.

[0018] The lid uses a wedge-shaped block that slides into the wedge-shaped mounting groove on the lid body, which facilitates the connection and disassembly of the lid and the box body. The lid lock engages with the side wall of the PCB mounting groove, and the mounting pin engages with the locking groove, which makes the lid stable on the box body and prevents the lid from falling back, further ensuring the safety and stability of the detection components inside the box body.

[0019] The housing has a mounting groove and a limiting groove. The end of the mounting groove is equipped with a spring thrust plate. The vibration damping column on the housing slides with the mounting groove, and a spring is provided between the vibration damping column and the spring thrust plate. The limiting groove cooperates with the limiting step. This structural design can realize the elastic connection and sliding cooperation of the housing on the fixed buckle, and also play the role of vibration damping and limiting. It reduces the impact of the vibration generated during battery operation on the detection component, extends the service life of the detection component, and improves the stability and reliability of the entire connector. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the battery leakage detection connector with elastic protection according to this utility model;

[0022] Figure 2 An explosion diagram for testing connectors;

[0023] Figure 3 This is a schematic diagram of the box lid structure;

[0024] Figure 4 Schematic diagram of the box structure Figure 1 ;

[0025] Figure 5 Schematic diagram of the box structure Figure 2 ;

[0026] Figure 6 This is a schematic diagram of the component structure for testing;

[0027] Figure 7 Diagram of the fixed buckle structure Figure 1 ;

[0028] Figure 8 Diagram of the fixed buckle structure Figure 2 ;

[0029] Figure 9 This is a schematic diagram showing the installation of the detection components inside the box;

[0030] Figure 10 This is a schematic diagram showing the connection between the box body and the lid;

[0031] Figure 11 A schematic diagram showing the assembly of the box body, box cover, and detection components;

[0032] Figure 12 A cross-sectional view of the assembly of the box body, box cover, and detection components;

[0033] Figure 13 This is a schematic diagram showing the connection between the box body and the fixing buckle;

[0034] Figure 14 This is a schematic diagram for testing the connector.

[0035] In the diagram: 1. Cover, 2. Box body, 3. PCB board, 4. Sensor, 5. Probe, 6. Spring, 7. Fixing buckle, 8. Wire, 9. Battery pack sheet metal; 11. Cover body, 12. Cover lock, 13. Wedge mounting groove, 14. Waterproof plate, 15. Positioning plate, 16. Mounting pin, 22. Vibration damping column, 23. PCB mounting groove, 24. Wire exit groove, 25. PCB locking key, 251. Clearance groove, 26. PCB positioning pin, 27. Probe positioning groove, 28. Wedge block, 29. Locking pin, 210. Wire slot, 211. Limiting step, 32. Wire pad, 33. PCB positioning hole, 34. Probe solder point, 71. Fixing clip, 72. Tray, 73. Mounting groove, 74. Spring thrust plate, 75. Limiting groove. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Example 1, such as Figure 1 , Figure 2 As shown, the battery leakage detection connector with elastic protection includes a fixing buckle 7, a housing 2 is elastically connected to the fixing buckle 7, the housing 2 and the fixing buckle 7 slide together, a cover 1 is snapped onto the housing 2, the housing 2 and the cover 1 cooperate to form an inverted U-shaped channel; a detection component is provided inside the housing 2, and the wire 8 on the detection component passes through the inverted U-shaped channel and extends out of the housing 2. The inverted U-shaped channel is located above the housing 2. The wire 8 passes through the inverted U-shaped channel and then extends upward. The detection component is connected to the display screen or alarm through the wire 8. When the detection component detects battery leakage, it transmits the leakage signal to the display screen or alarm through the wire 8 to alert personnel of battery leakage. The wire 8 needs to be bent twice when passing through the inverted U-shaped channel before extending out of the housing 2, which effectively prevents liquid from entering the housing 2 through the wire 8. At the same time, the inverted U-shaped channel can also shield the top of the housing 2, greatly improving the waterproofness of the top of the housing 2 and preventing liquid from entering the housing 2 from the top and contacting the detection component. This ensures the accuracy of the sensor's judgment signal, improves the reliability of battery leakage detection, and enhances the safety of battery use.

[0038] Furthermore, such as Figure 3 , Figure 4 , Figure 5As shown, the upper side of the box body 2 is provided with a wire outlet groove 24. The box cover 1 includes a box cover body 11, and a horizontally arranged waterproof plate 14 is connected to the upper end of the box cover body 11. A positioning plate 15 is connected to the waterproof plate 14. The positioning plate 15 is arranged parallel to the box cover body 11. The box cover body 11 and the positioning plate 15 are located on the front and rear sides of the box body 2, respectively. The wire outlet groove 24, the box cover body 11, the waterproof plate 14, and the positioning plate 15 cooperate to form an inverted U-shaped channel. After the box cover 1 is installed on the box body 2, the waterproof plate 14 is located above the wire outlet groove 24. The waterproof plate 14 shields the wires 8 inside the box body 2, playing a waterproof role and preventing liquid from entering the box body 2 from above the detection connector.

[0039] In addition, such as Figure 11 As shown, the box 2 is provided with a wire slot 210. When the wire 8 extends out of the box 2, it extends out from the wire slot 210. The wire slot 210 can limit the wire 8 and improve the stability of the wire 8.

[0040] Example 2, based on Example 1, includes a battery leakage detection connector with elastic protection, such as... Figure 6 As shown, the detection component includes a PCB board 3, on which are solder pads 32, and wires 8 connected to the solder pads 32. The PCB board 3 has two solder pads 32, which are soldered to two wires 8 respectively. The PCB board 3 also has a sensor 4 and a probe 5, with the probe 5 electrically connected to the sensor 4. The probe 5 includes a positive probe and a negative probe. When the battery pack leaks, the liquid creates a path between the positive and negative probes, causing the sensor to generate a leakage signal. This leakage signal is then transmitted to the display screen or alarm to trigger an alarm.

[0041] Furthermore, such as Figure 9 As shown, the housing 2 has a PCB mounting slot 23, and the PCB board 3 is snapped into the PCB mounting slot 23. The PCB mounting slot 23 has a PCB positioning pin 26, and the PCB board 3 has a PCB positioning hole 33, which engages with the PCB positioning pin 26. The shape of the PCB mounting slot 23 is the same as that of the PCB board 3, and the size of the PCB mounting slot 23 is larger than that of the PCB board 3. After the PCB board 3 is inserted into the PCB mounting slot 23, the PCB positioning pin 26 is inserted into the PCB positioning hole 33 to achieve positioning of the PCB board 3 within the housing 2, ensuring the accuracy of the PCB board 3's installation position.

[0042] Furthermore, such as Figure 4As shown, a PCB locking key 25 is provided on the side wall of the PCB mounting slot 23, and the PCB locking key 25 is engaged with the PCB board 3 for limiting. A clearance groove 251 is provided on the housing 2, and the clearance groove 251 corresponds to the position of the PCB locking key 25. In this embodiment, four PCB locking keys 25 are provided on the side wall of the PCB mounting slot 23, and the four PCB locking keys 25 are arranged opposite to each other on the two side walls of the PCB mounting slot 23. The clearance groove 251 can cause elastic deformation of the PCB mounting slot side wall near the PCB locking key 25, so that the spacing between the oppositely arranged PCB locking keys 25 can be increased, which facilitates the installation of the PCB board 3.

[0043] In addition, a probe positioning groove 27 is provided on the lower side of the PCB mounting groove 23. After the PCB board 3 is installed in the PCB mounting groove 23, the probe 5 is inserted into the probe positioning groove 27. The probe positioning groove 27 positions the probe 5 to ensure the stability of the probe 5. A cavity is provided on the lower side of the PCB mounting groove 23, and the probe 5 extends into the lower cavity.

[0044] Furthermore, such as Figure 10 As shown, the box body 2 is provided with a wedge-shaped block 28, and the box cover body 11 is provided with a wedge-shaped mounting groove 13, which slides in conjunction with the wedge-shaped block 28. In this embodiment, the wedge-shaped block 28 is arranged laterally and is located on both sides of the lower cavity. Through the cooperation between the wedge-shaped mounting groove 13 and the wedge-shaped block 28, the box cover 1 is connected to the box body 2 by sliding.

[0045] Furthermore, such as Figure 11 , Figure 12 As shown, the lid body 11 is equipped with a lid lock 12, which engages with the side wall of the PCB mounting slot 23. After the lid 1 slides into place on the box body 2, it is limited by the engagement of the lid lock 12 with the side wall of the PCB mounting slot 23, preventing the lid 1 from retracting and ensuring stable installation of the lid 1 on the box body 2. The lid body 11 is equipped with a mounting pin 16, and the box body 2 is equipped with a locking groove 29, which engages with the mounting pin 16.

[0046] Example 3, based on Example 2, includes a battery leakage detection connector with elastic protection, such as... Figure 7 , Figure 8 , Figure 13As shown, the fixing buckle 7 is provided with an installation groove 73 and a limiting groove 75. The end of the installation groove 73 is provided with a spring thrust plate 74. The housing 2 is provided with a vibration damping column 22 and a limiting step 211. The vibration damping column 22 is slidably engaged with the installation groove 73. A spring 6 is provided between the vibration damping column 22 and the spring thrust plate 74. The limiting groove 75 is engaged with the limiting step 211. In this embodiment, the spring thrust plate 74 is set at the upper end of the installation groove 73, and the limiting plane of the limiting step 211 is located on the lower side of the limiting step 211, that is, the limiting step 211 is engaged with the lower end of the limiting groove 75. This allows the housing 2 to float on the fixing buckle 7. After the detection connector is installed, the lower end of the housing 2 is in contact with the surface of the battery pack. When the battery pack deforms, the housing 2 floats with the surface of the battery pack to prevent the connector from loosening and falling off.

[0047] In addition, such as Figure 14 As shown, the fixing buckle 7 is provided with a fixing clip 71 and a tray 72. When the test connector is installed, the fixing clip 71 is passed through the through hole on the battery pack sheet metal 9, and the tray 72 is engaged with the surface of the battery pack sheet metal 9. The fixing clip 71 and the tray 72 work together on both sides of the battery pack sheet metal 9 to realize the installation and fixing of the test connector on the battery pack sheet metal 9.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery leakage detection connector with elastic protection, comprising a retaining clip (7), wherein a housing (2) is elastically connected to the retaining clip (7), and the housing (2) slides in conjunction with the retaining clip (7), characterized in that, The box body (2) is fitted with a box cover (1), and the box body (2) and the box cover (1) cooperate to form an inverted U-shaped channel; the box body (2) is equipped with a detection component, and the wire (8) on the detection component passes through the inverted U-shaped channel and extends out of the box body (2).

2. The battery leakage detection connector with elastic protection according to claim 1, characterized in that, The upper side of the box body (2) is provided with a wire outlet groove (24). The box cover (1) includes a box cover body (11). A horizontally arranged waterproof plate (14) is connected to the upper end of the box cover body (11). A positioning plate (15) is connected to the waterproof plate (14). The positioning plate (15) is arranged parallel to the box cover body (11). The box cover body (11) and the positioning plate (15) are located on the front and rear sides of the box body (2) respectively. The wire outlet groove (24), the box cover body (11), the waterproof plate (14) and the positioning plate (15) cooperate to form an inverted U-shaped channel.

3. The battery leakage detection connector with elastic protection according to claim 1 or 2, characterized in that, The testing component includes a PCB board (3), on which wire pads (32) are provided, and wires (8) are connected to wire pads (32).

4. The battery leakage detection connector with elastic protection according to claim 3, characterized in that, The PCB board (3) is equipped with a sensor (4) and a probe (5), and the probe (5) is electrically connected to the sensor (4).

5. The battery leakage detection connector with elastic protection according to claim 4, characterized in that, The box (2) is provided with a PCB mounting slot (23), and the PCB board (3) is snapped into the PCB mounting slot (23); the PCB mounting slot (23) is provided with a PCB positioning pin (26), and the PCB board (3) is provided with a PCB positioning hole (33), which cooperates with the PCB positioning pin (26).

6. The battery leakage detection connector with elastic protection according to claim 5, characterized in that, The PCB mounting slot (23) has a PCB locking key (25) on its side wall, which is matched with the PCB board (3) for limiting. The box (2) has a clearance slot (251), which corresponds to the position of the PCB locking key (25).

7. The battery leakage detection connector with elastic protection according to claim 5 or 6, characterized in that, The box body (2) is provided with a wedge block (28), and the box cover body (11) is provided with a wedge mounting groove (13), which slides in conjunction with the wedge block (28).

8. The battery leakage detection connector with elastic protection according to claim 7, characterized in that, The lid body (11) is provided with a lid lock (12), which engages with the side wall of the PCB mounting slot (23).

9. The battery leakage detection connector with elastic protection according to claim 8, characterized in that, The main body (11) of the box cover is provided with an installation pin (16), and the box body (2) is provided with a locking groove (29). The installation pin (16) and the locking groove (29) are inserted and engaged.

10. The battery leakage detection connector with elastic protection according to claim 1 or 9, characterized in that, The fixed buckle (7) is provided with an installation groove (73) and a limiting groove (75). The end of the installation groove (73) is provided with a spring thrust plate (74). The box body (2) is provided with a damping column (22) and a limiting step (211). The damping column (22) is slidably engaged with the installation groove (73). A spring (6) is provided between the damping column (22) and the spring thrust plate (74). The limiting groove (75) is engaged with the limiting step (211).

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