Vehicle battery protection module
By adopting a snap-fit structure and a two-way lead screw design in the automotive battery protection module, the maintenance inconvenience caused by the integrated bolts in the existing technology is solved, and the sealing cover can be installed securely and disassembled easily, thus improving maintenance efficiency.
Patent Information
- Application Number
- CN202520151223.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-01-22
AI Technical Summary
Existing automotive battery protection modules suffer from inconvenient maintenance and difficulty in performing convenient post-repair and maintenance due to their bolt-integrated structure.
The main housing and the sealing cover are connected by a snap-fit structure. The design of the double screw and the moving seat enables the sealing cover to be installed securely and removed easily. The double screw is driven to rotate by the adjustment handle, and the moving seat moves closer or further away to make the locking strip engage or disengage with the raised edge.
It provides a convenient maintenance method, with a simple structure and easy operation, ensuring the stable fixation of the sealing cover, while facilitating subsequent disassembly and improving the work efficiency of maintenance personnel.
Smart Images

Figure CN223927405U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive battery technology, specifically to an automotive battery protection module. Background Technology
[0002] The automotive battery protection module, also known as the automotive BDU, is a battery distribution unit that is mainly responsible for the distribution and management of electrical energy in the battery system. It usually includes some of the functions of the battery management system, which is used to monitor the battery status, such as voltage, current, and temperature, and control the charging and discharging process of the battery.
[0003] Most existing automotive battery protection modules are designed with a high degree of integration in order to further reduce the volume occupied when installed in the battery pack, so that more battery modules can be installed in the limited space. The external housing of the battery protection module is often fixed with a bolt-integrated structure. While this structure can provide good sealing, it makes it inconvenient to repair and replace the internal components of the automotive battery protection module during later use, causing great inconvenience to maintenance personnel. Utility Model Content
[0004] The purpose of this utility model is to provide a vehicle battery protection module to solve the technical problem that most existing vehicle battery protection modules use a lot of bolts, which makes it inconvenient for later maintenance.
[0005] The technical problem to be solved by this utility model can be achieved through the following technical solution:
[0006] A vehicle battery protection module includes a main housing and a sealing cover disposed on the main housing;
[0007] The main housing has raised edges on both sides, and a support shell is provided in the center of the bottom wall of the sealing cover. A bidirectional lead screw is rotatably provided inside the support shell. A toothed ring is provided in the middle of the bidirectional lead screw. An adjusting handle is rotatably provided on the top of the main housing. An end gear that meshes with the toothed ring is provided at the bottom end of the adjusting handle. Movable seats are provided at both ends of the bidirectional lead screw.
[0008] Two sets of locking strips are slidably provided at the bottom of the main housing. Each locking strip has a locking groove that matches the protruding edge on the side that is close to each other. A traction rod is movably provided on the locking strip, and the other end of the locking strip is movably connected to the moving seat.
[0009] As a further embodiment of this utility model: the raised edge is perpendicular to the main housing and protrudes outward; the two ends of the bidirectional lead screw are rotatably connected to the inner wall of the sealing cover; and the locking strips are symmetrically distributed.
[0010] As a further embodiment of this utility model: the bottom wall of the sealing cover is symmetrically provided with limiting grooves at both ends, and the limiting grooves are used to limit and guide the movement of the locking strip. The top of the sealing cover is provided with an end cover that surrounds the outside of the adjusting handle, and the height of the end cover is greater than that of the adjusting handle.
[0011] As a further embodiment of this utility model: an electrode interface is provided on the front side of the main housing, and a communication terminal is provided on one side of the main housing.
[0012] As a further embodiment of this utility model: a charging / discharging end is provided at the bottom of the main housing, and a heating end and a liquid cooling end are respectively provided on the other side of the main housing.
[0013] The beneficial effects of this utility model are:
[0014] In this invention, the main housing and the sealing cover are initially positioned and fixed by a snap-fit connection. Then, the operator can drive the bidirectional screw to rotate by turning the adjusting handle. The rotation of the bidirectional screw can drive the moving seats to move closer or further apart. When the moving seats move closer together, the moving seats and the traction rod pull the locking strip closer together, so that the locking strip can engage and limit the protruding edge, thus allowing the sealing cover to be firmly installed on the main housing. When it is necessary to inspect and maintain the relevant components inside the main housing, the operator can turn the adjusting handle in the opposite direction to release the locking strip from fixing the protruding edge. The device has a simple structure and is easy to operate. While providing stable fixation for the sealing cover, it also facilitates subsequent disassembly, providing great convenience for maintenance personnel. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings.
[0016] Figure 1 This is a three-dimensional schematic diagram of the device in this utility model;
[0017] Figure 2 This is a three-dimensional schematic diagram of the charging and discharging end in this utility model;
[0018] Figure 3 This is a three-dimensional schematic diagram of the sealing cap in this utility model;
[0019] Figure 4 This is a schematic diagram of the end gear structure of this utility model.
[0020] In the diagram: 1. Main housing; 2. Sealing cover; 3. Raised edge; 4. Mounting shell; 5. Two-way lead screw; 6. Gear ring; 7. Adjusting handle; 8. End gear; 9. Moving seat; 10. Locking bar; 11. Locking groove; 12. Traction rod; 13. Limiting slide groove; 14. End cover; 15. Electrode interface end; 16. Communication end; 17. Charging and discharging end; 18. Heating end; 19. Liquid cooling end. Detailed Implementation
[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0022] like Figure 1-4 As shown, a vehicle battery protection module includes a main housing 1 and a sealing cover 2 disposed on the main housing 1. The main housing 1 and the sealing cover 2 are assembled together to form the main structure of the device, which can provide good protection for the various components installed in the device.
[0023] The main housing 1 has raised edges 3 on both sides, which are perpendicular to the main housing 1 and protrude outwards. A support shell 4 is located at the center of the bottom wall of the sealing cover 2. A bidirectional screw 5 is rotatably mounted inside the support shell 4, with both ends of the bidirectional screw 5 rotatably connected to the inner wall of the sealing cover 2. A toothed ring 6 is located in the middle of the bidirectional screw 5. An adjusting handle 7 is rotatably mounted on the top of the main housing 1, with an end gear 8 meshing with the toothed ring 6 at the bottom end of the adjusting handle 7. Moving seats 9 are located at both ends of the bidirectional screw 5. Two sets of retaining bars 10 are slidably mounted on the bottom of the main housing 1. The retaining bars 10 are symmetrically distributed, and each retaining bar 10 has a groove 11 matching the raised edge 3 on its closest side. A traction rod 12 is movably mounted on the retaining bar 10, and the other end of the retaining bar 10 is movably connected to the moving seat 9. When the main housing 1... When the housing 1 and the sealing cover 2 are assembled together, the raised edge 3 is horizontally aligned with the slot 11 on the locking strip 10. At this time, the operator can drive the adjusting handle 7 to rotate using a wrench. The adjusting handle 7 drives the end gear 8 to move. Thus, the end gear 8 can synchronously drive the gear ring 6 and the double-acting screw 5 to rotate. The rotation of the double-acting screw 5 can drive the moving seats 9 to move closer or further apart. When the moving seats 9 move closer together, the locking strip 10 is pulled closer together by the moving seats 9 and the traction rod 12. This allows the locking strip 10 to engage and limit the raised edge 3, so that the sealing cover 2 can be firmly installed on the main housing 1. When it is necessary to inspect and maintain the relevant components inside the main housing 1, the operator can rotate the adjusting handle 7 in the opposite direction to release the locking strip 10 from fixing the raised edge 3.
[0024] In this embodiment, specifically, the bottom wall of the sealing cover 2 is symmetrically provided with limiting grooves 13 at both ends, and the limiting grooves 13 are used to limit and guide the movement of the locking strip 10. The top of the sealing cover 2 is provided with an end cover 14 surrounding the outside of the adjusting handle 7, and the height of the end cover 14 is greater than that of the adjusting handle 7. By setting the end cover 14 to block the outside of the adjusting handle 7, the adjusting handle 7 is prevented from rotating when it comes into contact with external objects, thereby causing the locking strip 10 to disengage from the protruding edge 3, ensuring that the locking strip 10 can be stably fixed to the protruding edge 3.
[0025] In this embodiment, specifically, the front of the main housing 1 is provided with an electrode interface end 15, which is connected to the power transmission end of the battery module, and can monitor the power transmission of the battery module in real time. A communication end 16 is provided on one side of the main housing 1, which can be connected to the vehicle network communication interface, ensuring that the vehicle information can be transmitted normally to the vehicle display end.
[0026] In this embodiment, specifically, a charging / discharging end 17 is provided at the bottom of the main housing 1. Charging and discharging cables can be connected to the charging / discharging end 17, thereby enabling real-time monitoring of the charging and discharging process of the battery module. A heating end 18 and a liquid cooling end 19 are respectively provided on the other side of the main housing 1. The heating end 18 and the liquid cooling end 19 can be connected to relevant heating and cooling components, thereby providing good temperature control and protection for the internal components of the device, preventing the internal temperature from becoming too low or too high, and enabling the device to operate stably for a long time.
[0027] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.
Claims
1. A battery protection module for vehicle, comprising a main housing (1) and a sealing cover (2) arranged on the main housing (1); characterized in that: the main housing (1) is provided with a raised rim (3) on both sides, the bottom wall of the sealing cover (2) is provided with a supporting shell (4) in the center, the inside of the supporting shell (4) is rotatably provided with a bidirectional screw rod (5), the middle part of the bidirectional screw rod (5) is provided with a gear ring (6), the top of the main housing (1) is rotatably provided with an adjusting handle (7), the bottom end of the adjusting handle (7) is provided with an end gear (8) engaged with the gear ring (6), and the two ends of the bidirectional screw rod (5) are provided with a moving seat (9). The bottom of the main housing (1) is slidably provided with two groups of clamping strips (10), the side of the clamping strips (10) close to each other is provided with a clamping groove (11) matched with the raised rim (3), the clamping strips (10) are movably provided with a traction rod (12), and the other end of the clamping strips (10) is movably connected with the moving seat (9).
2. The battery protection module for vehicle according to claim 1, characterized in that, The raised rim (3) is perpendicular to the main housing (1), and the raised rim (3) is outwardly raised, the two ends of the bidirectional screw rod (5) are rotatably connected with the inner wall of the sealing cover (2), and the clamping strips (10) are symmetrically distributed.
3. The battery protection module for vehicles according to claim 1, characterized in that, The bottom wall of the sealing cover (2) is symmetrically provided with a limiting sliding groove (13) at both ends, and the limiting sliding groove (13) is used for limiting and guiding the movement of the clamping strips (10), the top of the sealing cover (2) is provided with an end cover (14) surrounding the outside of the adjusting handle (7), and the height of the end cover (14) is greater than that of the adjusting handle (7).
4. The battery protection module for vehicles according to claim 1, characterized in that, The front of the main housing (1) is provided with an electrode interface end (15), and one side of the main housing (1) is provided with a communication end (16).
5. The battery protection module for vehicles according to claim 1, characterized in that, The bottom of the main housing (1) is provided with a charging and discharging end (17), and the other side of the main housing (1) is respectively provided with a heating end (18) and a liquid cooling end (19).