A mounting box for a manual service switch and a manual service switch

Abstract

The utility model relates to new energy battery technical field more specifically, relate to a kind of installation box and manual maintenance switch for manual maintenance switch, the installation box includes the box body with inner chamber, the box body injection moulding integrated at least two conductor connectors passing through the bottom of the box body, the two ends of each conductor connector are located in the inner chamber and the bottom outside of the box body respectively. The inner chamber of box body contains maintenance switch and connects the upper end of each conductor connector to conduct, the lower end of conductor connector is used to connect with battery assembly to conduct, to form completed closed loop. Since the bottom of the box body and conductor connector are injection moulding integrated, compared with the box body and conductor connector of separate assembly, the connection reliability of conductor connector in the present scheme is good, and the sealing property is good. The manual maintenance switch using the above installation box has good waterproof performance and ensures electrical safety.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery technology, and more specifically, to an installation box for a manual maintenance switch and the manual maintenance switch itself. Background Technology

[0002] The MSD (Manual Service Switch) is a common safety device in battery pack systems and a key component for ensuring high-voltage electrical safety. It is an effective actuator for electrical isolation in high-voltage systems. In related technologies, the MSD includes a mounting box and a service switch body housed within the box. The bottom of the mounting box is connected to the battery pack's circuitry, and the service switch body is connected within the box and electrically connected to the battery pack at the bottom, forming a complete closed circuit and thus connecting the entire circuit. In case of a fault or during maintenance, simply pulling out the service switch body disconnects the high-voltage circuit, ensuring personnel safety during maintenance.

[0003] Therefore, manual maintenance switches have high waterproof requirements. Insufficient sealing of the mounting box can allow external water to seep into the battery assembly, compromising electrical safety. Utility Model Content

[0004] To overcome the problem of insufficient sealing of manual maintenance switches in the prior art, this utility model provides a mounting box for manual maintenance switches, which can effectively improve the sealing of the inside of the mounting box and ensure electrical safety.

[0005] The second aspect of this utility model provides a manual maintenance switch.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a mounting box for a manual maintenance switch, comprising: a box body with an inner cavity, wherein the box body is integrally injection molded with at least two conductor connectors passing through the bottom of the box body, and both ends of each conductor connector are respectively located in the inner cavity and on the outer side of the bottom of the box body.

[0007] In this invention, the inner cavity of the housing accommodates the maintenance switch body. The maintenance switch body connects one end of each conductor connector located within the inner cavity, and the other end of each conductor connector located on the outer side of the bottom of the housing connects to the battery assembly, thus forming a complete closed circuit. Because the conductor connectors and the bottom of the housing are integrally injection molded, compared to separately assembled housings and conductor connectors, this solution offers better connection reliability and sealing, preventing water from entering the battery assembly due to water ingress into the inner cavity, thus ensuring electrical safety.

[0008] Furthermore, the conductor connector has a first threaded blind hole and a second threaded blind hole at both ends, respectively. A first conductive bolt is connected in the first threaded blind hole, and a second conductive bolt is connected in the second threaded blind hole. The first threaded blind hole and the second threaded blind hole are staggered in the vertical direction.

[0009] In this design, the maintenance switch at the upper end is connected via a first conductive bolt and a first threaded blind hole, while the battery assembly at the lower end is connected via a second conductive bolt and a second threaded blind hole. Since the first threaded blind hole and the second threaded blind hole are staggered in the vertical direction, both sealing performance and structural compactness are ensured.

[0010] Furthermore, the bottom of the box extends toward the inner cavity to form a fixed frame that runs through both ends, and the conductor connector is embedded in the fixed frame.

[0011] In this solution, by embedding the conductor connector into the fixed frame and connecting it to the bottom of the box, the contact surface between the conductor connector and the box can be increased, thereby improving the reliability of the connection.

[0012] Furthermore, a reinforcing rib is connected between the fixing frame and the inner wall of the box body.

[0013] In this design, the stability of the fixed frame structure can be improved by using reinforcing ribs.

[0014] Furthermore, the inner side of the fixing frame is provided with multiple protrusions, and the outer side of the conductor connector is provided with multiple grooves, and the protrusions and the grooves are matched and connected.

[0015] In this design, the protrusions and grooves make the connection between the fixing frame and the conductor connector more secure, preventing the conductor connector from detaching from the box and improving waterproof performance.

[0016] Furthermore, a front cover is detachably connected to the top of the box body, and an inner lining extends from the front cover toward the box body, the inner lining fitting against the inner wall of the inlet end of the inner cavity.

[0017] In this design, opening the front cover allows the maintenance switch to be removed, thereby disconnecting the circuit. The inner liner improves the seal between the front cover and the housing.

[0018] Furthermore, a connecting portion extends circumferentially from the upper end of the box body, and a first sealing groove is provided on the upper surface of the connecting portion. A first sealing ring is provided in the first sealing groove, and the front cover is connected to the upper surface of the connecting portion to press the first sealing ring.

[0019] In this design, the sealing performance between the box body and the front cover can be improved by setting a first sealing groove and a first sealing ring.

[0020] Furthermore, a second sealing groove is provided on the lower end face of the connecting part, and a second sealing ring is provided in the second sealing groove. The lower end face of the connecting part is used to connect with an external device to press the second sealing ring.

[0021] In this design, the second sealing ring is installed through the second sealing groove, which can improve the sealing performance between the box and the external equipment and enhance the waterproof performance.

[0022] Furthermore, a back cover is detachably connected to the bottom of the box, and the back cover extends downward to a receiving groove at the position corresponding to the conductor connector.

[0023] In this design, the bottom of the box is protected by a rear cover, and the receiving groove can accommodate the second conductive bolt connected to the lower end of the conductor connector.

[0024] Furthermore, there is a gap between the top of the receiving slot and the bottom of the box body.

[0025] In this design, a gap is provided between the top of the receiving slot and the bottom of the box to allow for the installation of the second conductive bolt to be connected to the battery assembly via a wire.

[0026] Furthermore, the front cover is connected to the box body by bolts.

[0027] In this design, the front cover is bolted to the housing, which increases the complexity of disassembly and prevents non-repair personnel from opening the front cover directly.

[0028] Furthermore, the back cover and the box body are connected by a snap-fit ​​connection.

[0029] In this design, the back cover is connected to the box body by a snap-fit, making it difficult for non-repair personnel to directly access it, thus reducing the complexity of disassembling the back cover and facilitating maintenance.

[0030] This utility model also provides a manual maintenance switch, using any of the above-mentioned mounting boxes. It has good sealing properties, preventing water from entering the battery assembly due to water ingress into the internal cavity, thus ensuring electrical safety.

[0031] Compared with the prior art, the beneficial effects of this utility model are:

[0032] I. This utility model relates to a mounting box for a manual maintenance switch. The inner cavity of the box is used to accommodate the maintenance switch. The maintenance switch is used to connect and conduct the upper ends of each conductor connector, and the lower ends of the conductor connectors are used to connect and conduct with the battery assembly, thereby forming a complete closed circuit. Because the conductor connectors and the bottom of the box are integrally injection molded, the connection reliability and sealing performance of the conductor connectors are good.

[0033] II. The mounting box for manual maintenance switches of this utility model can prevent the two ends from connecting by opening a first threaded blind hole and a second threaded blind hole at the two ends of the conductor connector, thereby improving the waterproof performance and making the structure more compact.

[0034] Third, the mounting box for manual maintenance switches of this utility model has a front cover that is bolted to the box body, which increases the complexity of disassembly and prevents non-maintenance personnel from directly opening the front cover; the rear cover is connected to the box body by a snap-fit, which makes it difficult for non-maintenance personnel to directly access it, thus reducing the complexity of disassembling the rear cover and facilitating maintenance.

[0035] IV. The manual maintenance switch of this utility model is assembled using the above-mentioned mounting box, which has good waterproof performance and can prevent water from entering the battery assembly through the gap between the conductor connector and the box body due to water ingress into the inner cavity, thus ensuring electrical safety. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of the mounting box for the manual maintenance switch of this utility model;

[0037] Figure 2 yes Figure 1 A schematic diagram of the overall structure from another perspective;

[0038] Figure 3 yes Figure 1 The main view;

[0039] Figure 4 yes Figure 1 Top view;

[0040] Figure 5 yes Figure 4 Sectional view of section AA;

[0041] Figure 6 yes Figure 4 BB section sectional view;

[0042] Figure 7 This is a structural diagram of the box;

[0043] Figure 8 yes Figure 7 A structural diagram from another perspective.

[0044] In the attached diagram: 1. Box body; 11. Fixing frame; 12. Reinforcing rib; 13. Connecting part; 14. First sealing groove; 15. Second sealing groove; 16. Protrusion; 2. Conductor connector; 21. First threaded blind hole; 22. Second threaded blind hole; 23. Groove; 3. First conductive bolt; 4. Second conductive bolt; 5. Front cover; 51. Inner liner; 6. First sealing ring; 7. Second sealing ring; 8. Rear cover; 81. Receiving groove. Detailed Implementation

[0045] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0046] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0047] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0048] Example 1

[0049] refer to Figures 1 to 8 This embodiment discloses an installation box for a manual maintenance switch, including a box body 1 with an inner cavity. The box body 1 is integrally injection molded with at least two conductor connectors 2 passing through the bottom of the box body 1. The two ends of each conductor connector 2 are respectively located in the inner cavity and on the outer side of the bottom of the box body 1.

[0050] In this embodiment, the inner cavity of the housing 1 is used to accommodate a maintenance switch. The maintenance switch is used to connect and conduct the upper ends of each conductor connector 2, and the lower end of the conductor connector 2 is used to connect and conduct with the battery assembly, thereby forming a complete closed loop. Since the conductor connector 2 and the bottom of the housing 1 are integrally injection molded, the connection reliability of the conductor connector 2 is better in this solution compared to the separately assembled housing 1 and conductor connector 2.

[0051] The mounting box for a manual maintenance switch provided in this embodiment has an inner cavity for accommodating and connecting the maintenance switch body. The bottom of the mounting box is used to connect the battery assembly, and the maintenance switch body is connected to the battery assembly, thereby achieving the connection of the entire circuit and providing protection. Specifically, the box body 1 can be approximately cuboid, forming a cuboid inner cavity inside the box body 1. Two conductor connectors 2 are respectively provided on both sides of the bottom of the box body 1 along its length, and the position between the two conductor connectors 2 is used to accommodate the maintenance switch body. The maintenance switch body is used to connect and conduct the conductor connectors 2 on both sides. When maintenance is required, the circuit is disconnected by removing the maintenance switch body. The box body 1 can be made of PA+GF plastic material with a GA content of 30% to 40%, halogen-free flame retardant, flame retardant rating V0, and good flame retardant effect, which can provide good protection for the manual maintenance switch.

[0052] refer to Figure 5 and Figure 6 The upper end of the conductor connector 2 is provided with a first threaded blind hole 21, and a first conductive bolt 3 is connected in the first threaded blind hole 21. The lower end of the conductor connector 2 is provided with a second threaded blind hole 22, and a second conductive bolt 4 is connected in the second threaded blind hole 22. The first threaded blind hole 21 and the second threaded blind hole 22 are staggered in the vertical direction.

[0053] In this embodiment, a first conductive bolt 3 and a first threaded blind hole 21 are provided to facilitate connection to the upper maintenance switch, and a second conductive bolt 4 and a second threaded blind hole 22 are provided to facilitate connection to the lower battery assembly. Because the first threaded blind hole 21 and the second threaded blind hole 22 are staggered in the vertical direction, both sealing is ensured and the structure is compact. The blind holes prevent external water from passing through the threaded holes and entering the interior to contact the battery assembly, ensuring safety. The conductor connector 2 can be made of stainless steel or other corrosion-resistant metal materials with good conductivity. The number of first threaded blind holes 21 and second threaded blind holes 22 on each conductor connector 2 can be set according to actual needs. For example, in this embodiment, each conductor connector 2 has one first threaded blind hole 21 at its upper end and two second threaded blind holes 22 at its lower end.

[0054] refer to Figures 1 to 6 The top of the box body 1 is detachably connected to a front cover 5. The bottom of the front cover 5 extends toward the box body 1 with an inner liner 51, which fits against the inner wall of the inlet end of the box body 1. Opening the front cover 5 allows the maintenance switch to be removed, thereby disconnecting the circuit. The inner liner 51 improves the sealing between the front cover 5 and the box body 1.

[0055] Specifically, a connecting portion 13 extends circumferentially from the upper end of the box body 1, and the connecting portion 13 has multiple threaded holes circumferentially. Through holes are provided on the front cover 5 at positions corresponding to the threaded holes on the top of the box body 1, facilitating bolt connection between the box body 1 and the front cover 5. The inner lining 51 faces the inside of the opening at the top of the box body 1, and after installation, fits snugly against the upper end of the inner cavity of the box body 1 to improve sealing performance. The center of the front cover 5 protrudes outward to provide greater accommodating space for the inner cavity of the box body 1. Warning signs and markings, such as "High Voltage Danger" and "Electrical" markings, can be printed or affixed to the outer surface of the front cover 5 to remind users to be careful. The front cover 5 can also be made of PA+GF plastic material with a GA content of 30%–40%, halogen-free flame retardant, flame retardant rating V0, and has good fire safety performance.

[0056] refer to Figures 1 to 6 The bottom of the box body 1 is detachably connected to a rear cover 8, and the rear cover 8 has a downward protruding receiving groove 81 corresponding to the position of the conductor connector 2. The rear cover 8 protects the bottom of the box body 1, and the receiving groove 81 can accommodate the second conductive bolt 4 connected to the lower end of the conductor connector 2.

[0057] Specifically, the rear cover 8 has receiving grooves 81 on both sides, and the positions of the receiving grooves 81 correspond to the vertical positions of the conductor connector 2. A second threaded blind hole 22 is formed at the bottom of the conductor connector 2, and a second conductive bolt 4 is connected thereto. The bottom of the second conductive bolt 4 extends out of the bottom of the housing 1, and is therefore protected by the rear cover 8 and the receiving grooves 81. The front cover 5 can also be made of PA+GF plastic material with a GA content of 30%–40%, halogen-free flame retardant, flame retardant rating V0, and has good fire safety performance.

[0058] refer to Figure 3 and Figure 5 There is a gap between the top of the receiving slot 81 and the bottom of the box body 1. This gap allows for the connection of the second conductive bolt 4 to the battery assembly via a wire. The wire can pass through the gap between the top of the receiving slot 81 and the bottom of the box body 1 to connect the conductor connector 2 to the battery assembly.

[0059] refer to Figures 1 to 3 The front cover 5 is connected to the box body 1 by bolts. The bolt connection between the front cover 5 and the box body 1 increases the complexity of disassembly and prevents non-maintenance personnel from directly opening the front cover 5.

[0060] refer to Figure 2 , Figure 3 and Figure 5The back cover 8 is connected to the box body 1 via a snap-fit ​​connection. In this design, the back cover 8 is connected to the box body 1 via a snap-fit ​​connection, making it difficult for non-maintenance personnel to directly access it, thus reducing the complexity of disassembling the back cover 8 and facilitating maintenance. Specifically, a pair of latches extend downward from the bottom of the box body 1, and the back cover 8 has a latch corresponding to the latches. The latches are inserted into the latches to engage, facilitating disassembly and installation. A positioning part extending upward is located in the middle of the back cover 8 between the two receiving grooves 81 on both sides, and a protruding part extending downward is located in the middle of the bottom of the box body 1. The protruding part is roughly rectangular, and the latches can be placed on the protruding part. The positioning part, in a rectangular shape, surrounds the side of the protruding part. When the back cover 8 is installed on the box body 1, the protruding part is positioned within the positioning part, serving as an auxiliary positioning connection.

[0061] Example 2

[0062] refer to Figures 5 to 8 This embodiment is similar to Embodiment 1, except that in this embodiment, the bottom of the box 1 extends towards the inner cavity to form a fixed frame 11 with both ends through it, and the conductor connector 2 is embedded in the fixed frame 11. By embedding the conductor connector 2 in the fixed frame 11, the contact surface between the conductor connector 2 and the box 1 can be increased, thereby improving the reliability of the connection.

[0063] Specifically, the fixing frame 11 is also integrated with the box body 1. The fixing frame 11 wraps around the conductor connector 2 to improve the stability of the conductor connector 2. The upper and lower end faces of the conductor connector 2 are exposed outside the fixing frame 11 to facilitate the machining of the first threaded blind hole 21 and the second threaded blind hole 22.

[0064] refer to Figure 1 A reinforcing rib 12 is connected between the fixing frame 11 and the inner sidewall of the box body 1, which improves the stability of the fixing frame 11 structure. In this embodiment, one side of the fixing frame 11 is fitted with the inner cavity sidewall of the box body 1, and the reinforcing rib 12 is connected to its adjacent sidewall and the fixing frame 11 in parallel with the sidewall, forming a stable connection structure.

[0065] refer to Figure 5 and Figure 7 The inner side of the fixing frame 11 is provided with multiple protrusions 16, and the outer side of the conductor connector 2 is provided with multiple grooves 23. The protrusions 16 and the grooves 23 are matched and connected. By cooperating with the protrusions 16 and the grooves 23, the connection between the fixing frame 11 and the conductor connector 2 can be made more stable, preventing the conductor connector 2 from detaching from the box body 1. On the other hand, it can further increase the contact area between the conductor connector 2 and the fixing frame 11, thereby improving the waterproof performance.

[0066] Example 3

[0067] refer to Figure 3 , Figure 5 and Figure 6 This embodiment is similar to Embodiment 1, except that a connecting portion 13 extends circumferentially from the upper end of the box body 1. A first sealing groove 14 is formed on the upper surface of the connecting portion 13, and a first sealing ring 6 is disposed within the first sealing groove 14. The front cover 5 is connected to the upper surface of the connecting portion 13 to press the first sealing ring 6. By setting the first sealing groove 14 and the first sealing ring 6, the sealing performance between the box body 1 and the front cover 5 can be improved. The first sealing groove 14 is roughly rectangular and is formed on the plane at the top of the box body 1, surrounding the opening at the top of the box body 1. When the front cover 5 is connected to the box body 1, the first sealing groove 14 is on the outer side relative to the inner lining 51 of the front cover 5. The connection of the first sealing groove 14 and the first sealing ring 6 further improves the waterproof performance of the box body 1, preventing external water from entering the inner cavity of the box body 1.

[0068] In this embodiment, the first sealing ring 6 is made of silicone rubber or fluororubber, and its shape is rectangular to match the first sealing groove 14. The cross-section of the first sealing ring 6 is I-shaped to increase the rebound ratio and improve the sealing performance.

[0069] refer to Figure 8 A second sealing groove 15 is formed on the lower end face of the connecting part 13, and a second sealing ring 7 is disposed in the second sealing groove 15. The lower end face of the connecting part 13 is used to connect with an external device to press the second sealing ring 7. In this embodiment, by setting the second sealing ring 7 through the second sealing groove 15, the sealing performance between the housing 1 and the external device can be improved, and the waterproof performance can be improved. The second sealing ring 7 can be bolted to the second sealing groove 15. When the manual maintenance switch is connected to the external device, the lower end face of the connecting part 13 is in close contact with the external device, and the second sealing ring 7 can prevent water from seeping into the bottom of the housing 1 from the connection gap.

[0070] Example 4

[0071] refer to Figures 1 to 8 This embodiment provides a manual maintenance switch, including any of the mounting boxes provided in embodiments 1 to 3. A maintenance switch body is disposed within the inner cavity of the mounting box. The upper ends of each conductor connector are connected via the maintenance switch body, and the battery assembly is connected via conductor connectors at the lower end of the mounting box. The battery assembly forms a closed circuit through the conductor connectors and the maintenance switch body. Removing the maintenance switch body disconnects the circuit.

[0072] The manual maintenance switch of this embodiment has good waterproof performance, which can prevent water from entering the battery pack through the gap between the conductor connector and the box due to water ingress into the inner cavity, thus ensuring electrical safety.

[0073] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A mounting box for a manual maintenance switch, characterized in that: The device includes a box body (1) with an inner cavity, wherein the box body (1) is integrally injection molded with at least two conductor connectors (2) passing through the bottom of the box body (1), and both ends of each conductor connector (2) are located in the inner cavity and on the outer side of the bottom of the box body (1), respectively.

2. The mounting box for a manual maintenance switch according to claim 1, characterized in that: The conductor connector (2) has a first threaded blind hole (21) and a second threaded blind hole (22) at both ends. A first conductive bolt (3) is connected in the first threaded blind hole (21), and a second conductive bolt (4) is connected in the second threaded blind hole (22). The first threaded blind hole (21) and the second threaded blind hole (22) are staggered in the vertical direction.

3. The mounting box for a manual maintenance switch according to claim 1, characterized in that: The bottom of the box (1) extends toward the inner cavity to form a fixed frame (11) that runs through both ends, and the conductor connector (2) is embedded in the fixed frame (11).

4. The mounting box for a manual maintenance switch according to claim 3, characterized in that: A reinforcing rib (12) is connected between the fixing frame (11) and the inner wall of the box body (1).

5. The mounting box for a manual maintenance switch according to claim 3, characterized in that: The inner side of the fixed frame (11) is provided with a plurality of protrusions (16), and the outer side of the conductor connector (2) is provided with a plurality of grooves (23). The protrusions (16) and the grooves (23) are matched and connected.

6. The mounting box for a manual maintenance switch according to claim 1, characterized in that: The top of the box body (1) is detachably connected to a front cover (5), and the front cover (5) extends toward the box body (1) with an inner lining (51), which fits against the inner wall of the inlet end of the inner cavity.

7. The mounting box for a manual maintenance switch according to claim 6, characterized in that: The upper end of the box body (1) extends a connecting part (13) in the circumferential direction. A first sealing groove (14) is provided on the upper end surface of the connecting part (13). A first sealing ring (6) is provided in the first sealing groove (14). The front cover (5) is connected to the upper end surface of the connecting part (13) to press the first sealing ring (6).

8. The mounting box for a manual maintenance switch according to claim 7, characterized in that: The lower end face of the connecting part (13) is provided with a second sealing groove (15), and a second sealing ring (7) is provided in the second sealing groove (15). The lower end face of the connecting part (13) is used to connect with an external device to press the second sealing ring (7).

9. The mounting box for a manual maintenance switch according to claim 6, characterized in that: The bottom of the box body (1) is detachably connected to a rear cover (8), which is connected to the box body (1) by a snap fastener, and the front cover (5) is connected to the box body (1) by bolts.

10. A manual maintenance switch, characterized in that: The mounting box as described in any one of claims 1 to 9 is used.

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