Battery pressing plate creepage limiting connection structure

Abstract

The utility model provides a kind of battery pressing plate limited creeping electrical connection structure, including shell, electric core, circuit board, insulating plate and copper bridge, the electric core, circuit board and insulating plate are all fixed in shell, the circuit board is between electric core and insulating plate, the insulating plate is close to the opening of shell, the electric core is electrically connected with circuit board, further include heightening piece, the heightening piece includes support leg, support plate, connection hole is opened on the insulating plate, the lower end of support leg is electrically connected with circuit board after passing through connection hole, the upper end of support leg is fixedly connected with support plate, positioning hole is opened on the support plate, the copper bridge is provided with fixed peg, the fixed peg is screwed on positioning hole after passing through copper bridge, the head of fixed peg is tightly contacted with copper bridge, reach the purpose of not prone to creeping.

Description

Technical Field

[0001] This utility model relates to the field of batteries, and in particular, to a battery pressure plate creepage limiting connection structure. Background Technology

[0002] like Figure 1 and Figure 2 As shown, a conventional battery structure typically includes a casing 1, a battery cell 2, a circuit board 3, and an insulating plate 4. The battery cell 2, circuit board 3, and insulating plate 4 are all fixed inside the casing 1, with the circuit board 3 located between the battery cell 2 and the insulating plate 4. To achieve electrical connection between the battery cell 2 and the circuit board 3 and ensure the stability of the connection, a copper bridge 6, electrically connected to the circuit board 3, is fixedly connected to the insulating plate 4.

[0003] To stably fix the copper bridge 6 to the insulating plate 4 and further ensure its reliable connection with the circuit board 3, the current technical solution uses bolts 5 for fixing. Specifically, this solution has threaded holes on the circuit board 3, and first and second through holes on the copper bridge 6 and the insulating plate 4, respectively. The bolt 5 passes through the first through hole of the copper bridge 6 and the second through hole of the insulating plate 4 in sequence, and is then threaded into the threaded hole of the circuit board 3. When the head of the bolt 5 is pressed tightly against the copper bridge 6, the copper bridge 6 is firmly fixed to the insulating plate 4, thus forming a stable connection.

[0004] However, this method of fixing the battery with metal bolts has potential drawbacks. Since bolts are typically made of metal, they are conductive, and the ends of the bolts are inevitably very close to the battery cell. During battery operation, this close proximity of the metal conductors can easily lead to creepage problems. That is, the charge on the battery cell may be conducted to the bolts through the air or the surface of the insulating material under the influence of a strong electric field. This charge conduction can not only lead to energy loss, but more seriously, it can interfere with the normal operation of the battery cell, negatively impacting its lifespan in the long run. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a battery pressure plate creepage limiting connection structure to reduce the occurrence of creepage problems.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a battery pressure plate creepage limit connection structure, including a shell, a battery cell, a circuit board, an insulating plate, and a copper bridge. The battery cell, circuit board, and insulating plate are all fixed inside the shell. The circuit board is located between the battery cell and the insulating plate. The insulating plate is near the opening of the shell. The battery cell is electrically connected to the circuit board. The structure also includes a heightening component, which includes a support leg and a support plate. The insulating plate has a connection hole. The lower end of the support leg passes through the connection hole and is electrically connected to the circuit board. The upper end of the support leg is fixedly connected to the support plate. The support plate has a positioning hole. The copper bridge is provided with a fixing bolt. The fixing bolt passes through the copper bridge and is threaded onto the positioning hole. The head of the fixing bolt is pressed against the copper bridge.

[0007] To achieve the above technical solution, during assembly, the support legs of the riser are passed through the connecting holes on the insulating plate, establishing an electrical connection between their lower ends and the circuit board. Simultaneously, the support plate of the riser is securely placed above the insulating plate. Subsequently, the copper bridge is placed on the support plate, and a fixing bolt is threaded through the copper bridge and locked into the positioning hole of the support plate. This structure, by raising the position of the copper bridge and its metal fixing bolt as a whole through the riser, physically increases the spatial distance between the fixing bolt and the battery cell, as well as the surface creepage distance. This effectively suppresses potential creepage phenomena, avoids the risk of energy loss and operational interference caused by conductors being too close together, and significantly improves the electrical insulation performance and long-term operational stability of the battery structure.

[0008] As a preferred embodiment of this utility model, the support leg includes a connecting section and a supporting section. The upper end of the supporting section is fixedly connected to the supporting plate, and the lower end of the supporting section is integrally connected to the connecting section. The connecting section passes through the connecting hole and is electrically connected to the circuit board. The lower surface of the supporting section abuts against the upper surface of the insulating plate.

[0009] To achieve the above technical solution, during the installation of the extender, the connecting section of its legs passes through the insulating plate to form an electrical connection with the circuit board, while the lower surface of the support section abuts tightly against the upper surface of the insulating plate. This segmented structural design allows the legs to achieve a reliable electrical connection while simultaneously utilizing the support section to form a stable mechanical support surface on the insulating plate. This ensures the stability and firmness of the extender installation, thereby guaranteeing the rigidity of the entire connection structure and the long-term reliability of the electrical performance at the connection points.

[0010] As a preferred embodiment of this utility model, multiple connecting segments are provided, and the multiple connecting segments are arranged along the length direction of the support segment, with a gap between adjacent connecting segments. Two support segments are provided and are located at both ends of the support plate.

[0011] To achieve the above technical solution, two support sections are respectively positioned at both ends of the support plate, forming a wide and balanced support base. Simultaneously, multiple connecting sections distributed along the length of each support section are integrated. This layout significantly improves the overall installation stability and anti-tipping ability of the riser by providing support at both ends. Furthermore, by setting multiple parallel connecting sections, a multi-point electrical path is formed, effectively increasing the conductive contact area, reducing contact resistance, and thus improving current carrying capacity and the reliability and redundancy of electrical connections.

[0012] As a preferred embodiment of this utility model, a support hole is provided on the side wall of the support leg, a reinforcing plate is provided on the side of the support plate facing the insulating plate, a support protrusion for embedding into the support hole is connected on the side wall of the reinforcing plate, a reinforcing hole is provided on the reinforcing plate, and the fixing bolt is threadedly connected to the positioning hole and then threadedly connected to the reinforcing hole.

[0013] To achieve the above technical solution, during assembly, a reinforcing plate is placed below the support plate. The pre-positioning and structural interlocking of the reinforcing plate with the support legs are achieved through the interlocking of the support protrusions and support holes. When tightening the copper bridge, the fixing bolts pass through the positioning holes of the support plate and are then screwed into the reinforcing holes of the reinforcing plate. The interlocking of the reinforcing plate and the support legs, along with the double-threaded locking of the fixing bolts, greatly enhances the connection rigidity and torsional resistance between the support plate and the support legs, forming a more robust whole and effectively improving the mechanical reliability and durability of the connection structure under vibration or impact environments.

[0014] In a preferred embodiment of this utility model, the upper surface of the reinforcing plate is attached to the lower surface of the supporting plate.

[0015] The above technical solution enables the reinforcing plate and the support plate to form a functionally integrated composite reinforcement structure. When subjected to the tightening force from the fixing bolts, the stress can be effectively transferred from the support plate and dispersed to the reinforcing plate, thereby significantly improving the support plate's resistance to bending deformation and overall mechanical strength, providing a more stable and reliable mounting base for the copper bridge.

[0016] As a preferred embodiment of this utility model, an anti-detachment block is fixedly connected to the inner wall of the outer shell, and a plurality of the anti-detachment blocks are arranged along the length direction of the outer shell. A guide slope is provided on the anti-detachment block, and the edge of the insulating plate is used to abut against the guide slope.

[0017] To achieve the above technical solution, the edge of the insulating plate is smoothly guided into the predetermined position along the guide ramp on the anti-detachment block. Once installed, the anti-detachment block effectively limits and supports the insulating plate. The guide ramp design simplifies the assembly process and improves assembly efficiency and accuracy; while the limiting function of the anti-detachment block ensures the precise fixation of the insulating plate and all its supporting components within the housing, effectively preventing loosening or displacement of the internal structure due to vibration or impact during transportation or use, thus ensuring the structural stability and safety of the entire battery module.

[0018] As a preferred embodiment of this utility model, the insulating plate is provided with an auxiliary hole, the auxiliary hole, the positioning hole and the reinforcing hole are coaxially arranged, and the threaded end of the fixing bolt is used to be placed in the auxiliary hole.

[0019] To achieve the above technical solution, an auxiliary hole coaxial with the positioning hole and the reinforcement hole is made on the insulating plate. This allows the threaded end of the fixing bolt to pass through the support plate and be placed in the auxiliary hole during installation. This structure provides radial support for the threaded end of the fixing bolt, enhancing the connection's resistance to lateral shear forces and vibration-induced loosening. Furthermore, it can accommodate longer fixing bolts. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the existing technology; Figure 2 This is a cross-sectional structural diagram of the prior art; Figure 3 This is a schematic diagram of the external structure of this utility model; Figure 4 for Figure 3 Enlarged view of point A; Figure 5 This diagram illustrates the location of the height-increasing component; Figure 6 The exploded structure diagram is shown to illustrate this utility model; Figure 7 for Figure 6 Enlarged view of point B.

[0021] Reference numerals: 1. Outer shell; 2. Battery cell; 3. Circuit board; 4. Insulating plate; 5. Bolt; 6. Copper bridge; 7. Anti-detachment block; 8. Guide slope; 9. Heightening component; 10. Support leg; 11. Support plate; 12. Connecting hole; 13. Positioning hole; 14. Connecting hole; 15. Connecting section; 16. Support section; 17. Support hole; 18. Reinforcing plate; 19. Support protrusion; 20. Reinforcing hole; 21. Auxiliary hole; 22. Fixing bolt. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 3 To be continued Figure 7The specific embodiments of this utility model will be further described in detail to make the technical solution of this utility model easier to understand and master.

[0023] A battery pressure plate creepage-limiting connection structure includes a housing 1, a battery cell, a circuit board 3, an insulating plate 4, and a copper bridge 6. The battery cell, circuit board 3, and insulating plate 4 are all fixed inside the housing 1, with the circuit board 3 located between the battery cell and the insulating plate 4. The insulating plate 4 is located near an opening in the housing 1, and the battery cell is electrically connected to the circuit board 3.

[0024] An anti-detachment block 7 is fixedly connected to the inner wall of the outer casing 1, and three anti-detachment blocks 7 are integrally connected to the long side of each side of the outer casing 1. A guide slope 8 is provided on the anti-detachment block 7, and the edge of the insulating plate 4 is used to abut against the guide slope 8.

[0025] The heightening element 9 is made of metal, and each heightening element 9 includes two legs 10 and a support plate 11. The two legs 10 are integrally connected to both ends of the support plate 11.

[0026] A connecting hole 12 is provided on the insulating plate 4. The lower end of the support leg 10 passes through the connecting hole 12 and is electrically connected to the circuit board 3. The upper end of the support leg 10 is connected to the support plate 11. A positioning hole 13 is provided in the middle of the support plate 11. The copper bridge 6 is provided with a fixing bolt 22. The copper bridge 6 is placed on the support plate 11. A connecting hole 14 is provided on the copper bridge 6. Then, the fixing bolt 22 passes through the connecting hole 14 and is threaded onto the positioning hole 13, so that the head of the fixing bolt 22 abuts against the copper bridge 6.

[0027] The support leg 10 includes an integrated connecting section 15 and a support section 16. Each support leg 10 includes one support section 16 and three connecting sections 15. The upper end of the support section 16 is fixedly connected to the support plate 11, and the lower end of the support section 16 is integrally connected to the connecting sections 15.

[0028] The connecting segment 15 passes through the connecting hole 12 and is electrically connected to the circuit board 3. The lower surface of the support segment 16 abuts against the upper surface of the insulating plate 4.

[0029] A support hole 17 is provided on the side wall of the support leg 10, near the connection between the support leg 10 and the support plate 11. A reinforcing plate 18 is provided on the side of the support plate 11 facing the insulating plate 4. The upper surface of the reinforcing plate 18 is in contact with the lower surface of the support plate 11. A support protrusion 19 for embedding into the support hole 17 is integrally connected to the side wall of the reinforcing plate 18.

[0030] A reinforcement hole 20 is provided in the middle of the reinforcement plate 18. The fixing bolt 22 is threaded to the positioning hole 13 and then threaded to the reinforcement hole 20.

[0031] An auxiliary hole 21 is provided on the insulating plate 4. The auxiliary hole 21, the positioning hole 13, and the reinforcing hole 20 are coaxially arranged and have the same diameter. If the threaded end of the fixing bolt 22 is too long, the threaded end of the fixing bolt 22 can be placed in the auxiliary hole 21.

[0032] The installation process of this utility model is as follows: Step 1: Pre-assembly of the heightening component 9 and the reinforcing plate 18: Align the metal reinforcing plate 18 with the bottom of the riser 9, i.e., the side of the support plate 11 facing the insulating plate 4. During operation, precisely align and insert the integrated support protrusion 19 on the side wall of the reinforcing plate 18 into the support hole 17 on the side wall of the two legs 10 of the riser 9 near the connection of the support plate 11. Through the engagement of the support protrusion 19 with the support hole 17, the reinforcing plate 18 and the riser 9 are stably pre-positioned, while ensuring that the upper surface of the reinforcing plate 18 is tightly attached to the lower surface of the support plate 11, forming a reinforced and integrated riser 9-reinforcing plate 18 assembly.

[0033] Step 2: Assembly of Insulation Board 4: Pick up the assembly of the heightening component 9 and the reinforcing plate 18, align the three connecting sections 15 at the lower end of each of its legs 10, and pass them sequentially through the pre-set connecting holes 12 on the insulating plate 4. During this process, the assembly is securely installed on the insulating plate 4, with the lower surface of the support section 16 on its legs 10 flush against the upper surface of the insulating plate 4, providing a solid base for subsequent installation. At this point, the connecting sections 15 protrude from the lower surface of the insulating plate 4, preparing for connection with the circuit board 3. Simultaneously, the positioning holes 13 of the support plate 11, the reinforcing holes 20 of the reinforcing plate 18, and the auxiliary holes 21 of the insulating plate 4 are precisely coaxially aligned.

[0034] Step 3: Installation of the main battery structure: First, fix the battery cell to the bottom position inside the housing 1. Then, place the circuit board 3 on top of the battery cell, positioning the circuit board 3 between the battery cell and the insulation board 4 assembly to be installed later, and electrically connect the circuit board 3 to the battery cell.

[0035] Step 4: Installation and positioning of the insulation board 4 assembly: The assembled insulating plate 4, consisting of the heightening component 9 and the reinforcing plate 18, is placed inside the housing 1 and positioned above the circuit board 3. During descent, the long sides of the insulating plate 4 first contact the guide ramps 8 of the three anti-detachment blocks 7 on the inner wall of the housing 1. Guided by the guide ramps 8, the entire insulating plate 4 assembly smoothly and precisely slides to the predetermined installation position. Once in place, the anti-detachment blocks 7 firmly limit the insulating plate 4, preventing it from detaching upwards. During this installation process, multiple connecting segments 15 extending from below the insulating plate 4 accurately contact the connection points on the circuit board 3, completing the electrical connection between them.

[0036] Step 5: Fixing and final connection of copper bridge 6: Place the copper bridge 6 on the support plate 11 of the riser 9, aligning the connecting hole 14 with the positioning hole 13 of the support plate 11. Then, take the fixing bolt 22 and pass it through the connecting hole 14 and the positioning hole 13 in sequence. The threaded end of the fixing bolt 22 provides further guidance and support after entering the positioning hole 13. Finally, screw the threaded end of the fixing bolt 22 into the reinforcing hole 20 and tighten it continuously. As the thread is screwed in, the head of the fixing bolt 22 will gradually press down and eventually abut against the upper surface of the copper bridge 6, thereby firmly pressing the copper bridge 6 onto the support plate 11, forming a stable and reliable mechanical fixation and electrical connection. If the threaded end of the fixing bolt 22 is designed to be long, its end can be accommodated in the auxiliary hole 21 of the insulating plate 4 to avoid interference with the circuit board 3 below.

[0037] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A battery pressure plate creepage-limiting connection structure, comprising a housing (1), a battery cell, a circuit board (3), an insulating plate (4), and a copper bridge (6), wherein the battery cell, the circuit board (3), and the insulating plate (4) are all fixed inside the housing (1), the circuit board (3) is located between the battery cell and the insulating plate (4), the insulating plate (4) is located near the opening of the housing (1), and the battery cell is electrically connected to the circuit board (3), characterized in that: It also includes a heightening component (9), which includes a support leg (10) and a support plate (11). The insulating plate (4) has a connection hole (12). The lower end of the support leg (10) passes through the connection hole (12) and is electrically connected to the circuit board (3). The upper end of the support leg (10) is fixedly connected to the support plate (11). The support plate (11) has a positioning hole (13). The copper bridge (6) is provided with a fixing bolt (22). The fixing bolt (22) passes through the copper bridge (6) and is threaded onto the positioning hole (13). The head of the fixing bolt (22) abuts against the copper bridge (6).

2. The battery pressure plate creepage limiting connection structure according to claim 1, characterized in that: The support leg (10) includes a connecting section (15) and a supporting section (16). The upper end of the supporting section (16) is fixedly connected to the supporting plate (11), and the lower end of the supporting section (16) is integrally connected to the connecting section (15). The connecting section (15) passes through the connecting hole (12) and is electrically connected to the circuit board (3). The lower surface of the supporting section (16) abuts against the upper surface of the insulating plate (4).

3. The battery pressure plate creepage limiting connection structure according to claim 2, characterized in that: Multiple connecting segments (15) are provided, and the multiple connecting segments (15) are arranged along the length direction of the support segment (16). There is a gap between two adjacent connecting segments (15). Two support segments (16) are provided and are located at both ends of the support plate (11).

4. The battery pressure plate creepage limiting connection structure according to claim 2, characterized in that: The support leg (10) has a support hole (17) on its side wall. The support plate (11) has a reinforcing plate (18) on the side facing the insulating plate (4). The side wall of the reinforcing plate (18) has a support protrusion (19) for embedding into the support hole (17). The reinforcing plate (18) has a reinforcing hole (20). The fixing bolt (22) is threaded to the positioning hole (13) and then threaded to the reinforcing hole (20).

5. The battery pressure plate creepage limiting connection structure according to claim 4, characterized in that: The upper surface of the reinforcing plate (18) is attached to the lower surface of the support plate (11).

6. The battery pressure plate creepage limiting connection structure according to claim 1, characterized in that: An anti-detachment block (7) is fixedly connected to the inner wall of the outer shell (1). Multiple anti-detachment blocks (7) are arranged along the length direction of the outer shell (1). A guide slope (8) is provided on the anti-detachment block (7). The edge of the insulating plate (4) is used to abut against the guide slope (8).

7. The battery pressure plate creepage limiting connection structure according to claim 4, characterized in that: An auxiliary hole (21) is provided on the insulating plate (4). The auxiliary hole (21), positioning hole (13), and reinforcing hole (20) are coaxially arranged. The threaded end of the fixing bolt (22) is used to be placed in the auxiliary hole (21).

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