New energy power battery cell clamping structure

Abstract

The utility model relates to a clamping and fixing structure, in particular to a new energy power battery cell clamping and fixing structure which comprises a supporting column installed on a packaging box. A clamping structure is arranged between the supporting column and the battery cell cover plate; the clamping structure comprises a limiting sleeve arranged on the battery cell cover plate; a limiting bulge which can be embedded with the limiting sleeve is arranged on the supporting column; the clamping structure is used for connecting the packaging box and the battery cell cover plate; the battery cell is fixed; an adjusting structure is arranged on the battery cell cover plate and is used for increasing or reducing the pressure of the battery cell cover plate on the battery cell; stable connection is formed between the battery cell cover plate and the packaging box through the clamping structure, so that the position of the battery cell is fixed and cannot easily move; through the mutual cooperation of the clamping structure and the adjusting structure, the pressure of the battery cell cover plate and the packaging box on the battery cell can be adjusted, so that the battery cell cover plate and the packaging box can work in an optimal pressure state, and accidents are avoided; the battery cell is elastically connected with the battery cell cover plate; and surface pressure caused by cell expansion is weakened through elastic force.

Description

Technical Field

[0001] This utility model relates to a locking structure, specifically a locking structure for new energy power battery cells. Background Technology

[0002] New energy battery cells are the core components of power batteries for new energy vehicles, typically referring to a single energy storage unit in a lithium-ion battery system. They consist of key parts such as the positive electrode, negative electrode, separator, and electrolyte, and can independently complete the charging and discharging process.

[0003] Common packaging boxes typically include compartments for the battery cells to prevent interference between them. After the cells are placed into the compartments, a cover plate is placed over them to apply pressure from both above and below, clamping the cells and preventing displacement. The connection between the cover plate and the packaging box forms the cell securing structure. Common securing structures include bolted connections and snap-fit ​​connections.

[0004] Bolted connections use bolts to connect the cell cover to the packaging box. Due to the large number of bolts, installation is relatively cumbersome. The snap-fit ​​connection structure includes a limiting block fixed to the packaging box and a limiting groove on the cell cover. In use, simply align the limiting groove on the cell cover with the limiting block on the packaging box, then press the cell cover to engage the limiting block and limiting groove, thus securing the cell.

[0005] After prolonged use, the battery cell will generate heat, causing the cell casing to expand and deform. When the battery cell cover is connected to the packaging box using a common snap-fit ​​connection structure, a rigid connection is formed between the battery cell cover and the battery cell. After the battery cell expands, the pressure between the battery cell cover and the battery cell will increase. Excessive surface pressure may lead to serious consequences such as battery bulging and rupture. Summary of the Invention

[0006] The purpose of this utility model is to provide a fixing structure for new energy power battery cells to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] The cell securing structure for new energy power batteries includes support columns installed on the packaging box;

[0009] A snap-fit ​​structure is provided between the support column and the cell cover plate; the snap-fit ​​structure includes a limiting sleeve provided on the cell cover plate; the support column is provided with a limiting protrusion that can be fitted with the limiting sleeve;

[0010] The snap-fit ​​structure is used to connect the packaging box and the battery cell cover plate to secure the battery cell.

[0011] An adjustment structure is provided on the cell cover plate, which is used to increase or decrease the pressure of the cell cover plate on the cell.

[0012] The new energy power battery cell fastening structure described above includes: a docking post installed on the support post; symmetrically arranged fastening posts are installed on the docking post, and there is a shrinkage gap between the fastening posts; the limiting protrusion is fixedly connected to the fastening posts; and a second slope is provided on the fastening posts.

[0013] The new energy power battery cell fixing structure described above includes a connecting sleeve installed on the cell cover plate; a fitting groove is provided inside the limiting sleeve; and a third slope is provided on the fitting groove.

[0014] The new energy power battery cell fixing structure described above has the following characteristics: the second slope has an outward tilting feature; the third slope has an inward tilting feature.

[0015] The new energy power battery cell fixing structure described above includes: the adjusting structure comprising an internally threaded sleeve rotatably mounted on the cell cover plate; the internally threaded sleeve being internally threadedly connected to an externally threaded sleeve that slidably engages with the cell cover plate; a limiting sleeve being slidably engaged with the externally threaded sleeve; a spring being wrapped around the externally threaded sleeve; and the two ends of the spring respectively abutting against the externally threaded sleeve and the limiting sleeve.

[0016] The new energy power battery cell fixing structure described above has a fourth slope on the connecting sleeve.

[0017] The new energy power battery cell fixing structure described above: a first slope is provided between the support column and the docking column.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the snap-fit ​​structure forms a stable connection between the battery cell cover and the packaging box, so that the battery cell position is fixed and cannot be easily displaced; the cooperation between the snap-fit ​​structure and the adjustment structure can adjust the pressure of the battery cell cover and the packaging box on the battery cell, so as to maintain the optimal pressure state for operation and avoid accidents; and the connection between the battery cell and the battery cell cover is an elastic connection; the elasticity weakens the surface pressure caused by the expansion of the battery cell, which can effectively protect the battery cell, thereby improving safety and practicality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure for securing battery cells in new energy power batteries.

[0020] Figure 2 for Figure 1 A schematic diagram of the structure at point A in the middle.

[0021] Figure 3 for Figure 1 A structural schematic diagram from a cross-sectional perspective.

[0022] Figure 4 for Figure 3 A schematic diagram of the structure at point B.

[0023] Figure 5 This is a schematic diagram of the internal threaded sleeve in the cell fixing structure of new energy power batteries.

[0024] Figure 6 This is a schematic diagram of the limiting protrusion in the cell fixing structure of a new energy power battery.

[0025] In the picture: 1. Packaging box;

[0026] 2. Cell cover plate;

[0027] 3. Support column; 301. First slope;

[0028] 4. Connecting post; 401. Snap-fit ​​post; 402. Expansion joint; 403. Limiting protrusion; 404. Second slope;

[0029] 5. Internally threaded sleeve;

[0030] 6. External threaded sleeve;

[0031] 7. Limiting sleeve; 701. Fitting groove; 702. Third slope surface;

[0032] 8. Spring;

[0033] 9. Connecting sleeve; 901. Fourth slope. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] Please see Figures 1-6 As an embodiment of this utility model, the new energy power battery cell fixing structure includes a support column 3 installed on the packaging box 1;

[0036] A snap-fit ​​structure is provided between the support column 3 and the cell cover plate 2; the snap-fit ​​structure includes a limiting sleeve 7 provided on the cell cover plate 2; the support column 3 is provided with a limiting protrusion 403 that can be fitted with the limiting sleeve 7;

[0037] The snap-fit ​​structure is used to connect the packaging box 1 and the battery cell cover plate 2 to fix the battery cell.

[0038] The cell cover plate 2 is provided with an adjustment structure, which is used to increase or decrease the pressure of the cell cover plate 2 on the cell.

[0039] In this embodiment, the battery cells are arranged in an orderly manner inside the packaging box 1. When the battery cell cover plate 2 is moved, the limiting sleeve 7 is aligned with the support column 3. After alignment, an external force is applied to make the battery cell cover plate 2 gradually approach the bottom of the packaging box 1.

[0040] As the cell cover 2 approaches the packaging box 1, the limiting sleeve 7 is pressed first, and then the limiting protrusion 403 enters the limiting sleeve 7. Through the snap-fit ​​between the limiting protrusion 403 and the limiting sleeve 7, a stable connection is formed between the cell cover 2 and the packaging box 1, so that the position of the cell is fixed and cannot be easily displaced.

[0041] Then, by adjusting the structural action, the distance between the limiting sleeve 7 and the cell cover plate 2 is increased or decreased, thereby increasing or decreasing the pressure between the limiting sleeve 7 and the limiting protrusion 403, so as to change the pressure of the cell cover plate 2 on the cell, thereby avoiding excessive pressure on the cell surface that would affect the normal use of the cell, or insufficient pressure on the cell surface that would make it easy for the cell to shift position due to external interference during use.

[0042] By combining the snap-fit ​​structure and the adjustment structure, the pressure of the cell cover plate 2 and the packaging box 1 on the cell can be adjusted to maintain the optimal pressure state and avoid accidents.

[0043] As a further embodiment of this utility model, the snap-fit ​​structure includes a connecting post 4 installed on the support post 3; symmetrically arranged snap-fit ​​posts 401 are installed on the connecting post 4, and there is a shrinkage gap 402 between the snap-fit ​​posts 401; the limiting protrusion 403 is fixedly connected to the snap-fit ​​posts 401; and a second slope 404 is provided on the snap-fit ​​posts 401.

[0044] As a further embodiment of this utility model, the snap-fit ​​structure also includes a connecting sleeve 9 installed on the battery cell cover plate 2; the limiting sleeve 7 has an engagement groove 701; and the engagement groove 701 has a third slope 702.

[0045] In this embodiment, the diameter of the limiting protrusion 403 is greater than the inner diameter of the limiting sleeve 7 and the connecting sleeve 9.

[0046] As the battery cell cover 2 gradually approaches the bottom of the packaging box 1, the connecting sleeve 9 first contacts the limiting protrusion 403. Through the squeezing action of the connecting sleeve 9 and the limiting protrusion 403, the limiting protrusion 403 will move closer to each other to reduce the shrinkage gap 402, causing the snap-fit ​​post 401 to deform under force.

[0047] Afterwards, the limiting protrusion 403 will slide towards the limiting sleeve 7 while closely abutting against the inner wall of the connecting sleeve 9; and the limiting protrusion 403 will maintain this state and pass through the limiting sleeve 7.

[0048] When the limiting protrusion 403 passes through the limiting sleeve 7, under the action of the elastic force of the snap-fit ​​post 401, the limiting protrusions 403 will move away from each other to reset, thereby resetting the shrinkage joint 402; at this time, the limiting protrusion 403 will enter the fitting groove 701.

[0049] Then, by adjusting the structure, the limiting sleeve 7 is moved away from the battery cell cover plate 2, so that the second slope 404 and the third slope 702 abut against each other, so that the limiting protrusion 403 and the limiting sleeve 7 engage with each other, and the docking is completed.

[0050] The interlocking between the limiting protrusion 403 and the fitting groove 701 creates a stable connection between the cell cover 2 and the packaging box 1, thus fixing the cell position and preventing easy displacement.

[0051] By combining the snap-fit ​​structure and the adjustment structure, the pressure of the cell cover plate 2 and the packaging box 1 on the cell can be adjusted to maintain the optimal pressure state and avoid accidents.

[0052] As a further embodiment of this utility model, the second slope 404 has an outward tilting feature; the third slope 702 has an inward tilting feature.

[0053] In this embodiment, when the second slope 404 and the third slope 702 come into contact with each other, the outward tilting feature of the second slope 404 and the inward tilting feature of the third slope 702 can increase the connection strength between the limiting protrusion 403 and the fitting groove 701, thereby improving the connection strength between the battery cell cover 2 and the packaging box 1.

[0054] As a further embodiment of this utility model, the adjustment structure includes an internally threaded sleeve 5 rotatably mounted on the battery cell cover plate 2; the internally threaded sleeve 5 is internally threadedly connected to an externally threaded sleeve 6 that is slidably fitted with the battery cell cover plate 2; a limiting sleeve 7 is slidably fitted with the externally threaded sleeve 6, and a spring 8 is wrapped around the externally threaded sleeve 6, with both ends of the spring 8 abutting against the externally threaded sleeve 6 and the limiting sleeve 7 respectively.

[0055] In this embodiment, after the limiting protrusion 403 enters the fitting groove 701, the internal threaded sleeve 5 is rotated, and the external threaded sleeve 6 is driven away from the battery cell cover plate 2 through the threaded engagement, and the limiting sleeve 7 is driven to move synchronously through the spring 8.

[0056] When the second slope 404 comes into contact with the third slope 702, the limiting sleeve 7 will stop moving, thereby compressing the spring 8; when the surface pressure of the battery cell reaches the optimal state, the drive adjustment structure stops.

[0057] Subsequently, when the cell cover 2 is subjected to pressure transmitted from inside the packaging box 1, the cell cover 2 will move away from the packaging box 1, thereby driving the external threaded sleeve 6 to move synchronously through the internal threaded sleeve 5, so as to further compress the spring 8. As the compression increases, the elastic force of the spring 8 will make the second slope 404 and the third slope 702 contact more closely.

[0058] Therefore, after prolonged operation or when the battery cell becomes unstable, it may expand, increasing the pressure between the cell cover plate 2 and the cell. Excessive surface pressure can lead to serious consequences such as battery bulging or rupture.

[0059] Since the cell cover plate 2 can move outward, the pressure can be reduced by moving it, so as to avoid excessive pressure on the cell surface and damage to the cell.

[0060] The combined action of the snap-fit ​​structure and the adjustment structure allows the battery cell cover 2 and the packaging box 1 to limit and secure the battery cell; and the connection between the battery cell and the battery cell cover 2 is an elastic connection; by using elasticity to reduce the surface pressure caused by the expansion of the battery cell, the battery cell can be effectively protected, thereby improving safety and practicality.

[0061] As a further improvement of this utility model, the connecting sleeve 9 is provided with a fourth slope 901.

[0062] In this embodiment, the fourth slope 901 can convert the pressure between the limiting protrusion 403 and the connecting sleeve 9 into a force that brings the limiting protrusion 403 closer to each other, thereby facilitating the entry of the limiting protrusion 403 into the connecting sleeve 9.

[0063] As a further embodiment of this utility model, a first slope 301 is provided between the support column 3 and the docking column 4.

[0064] In this embodiment, the first slope 301 can increase the connection strength between the docking column 4 and the support column 3, thereby reducing the risk of deformation or damage at the connection between the docking column 4 and the support column 3.

[0065] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A new energy power battery cell fixing structure, including a support column (3) installed on a packaging box (1); Its features are, A snap-fit ​​structure is provided between the support column (3) and the cell cover plate (2); the snap-fit ​​structure includes a limiting sleeve (7) provided on the cell cover plate (2); a limiting protrusion (403) is provided on the support column (3) that can be fitted with the limiting sleeve (7). The snap-fit ​​structure is used to connect the packaging box (1) and the battery cell cover plate (2) to fix the battery cell. An adjustment structure is provided on the cell cover plate (2), which is used to increase or decrease the pressure of the cell cover plate (2) on the cell.

2. The new energy power battery cell fixing structure according to claim 1, characterized in that, The snap-fit ​​structure includes a docking column (4) installed on the support column (3); symmetrically arranged snap-fit ​​columns (401) are installed on the docking column (4), and there is a shrinkage joint (402) between the snap-fit ​​columns (401); the limiting protrusion (403) is fixedly connected to the snap-fit ​​column (401); and a second slope (404) is provided on the snap-fit ​​column (401).

3. The new energy power battery cell fixing structure according to claim 2, characterized in that, The snap-fit ​​structure also includes a connecting sleeve (9) installed on the battery cell cover plate (2); the limiting sleeve (7) has an engagement groove (701); and the engagement groove (701) has a third slope (702).

4. The new energy power battery cell fixing structure according to claim 3, characterized in that, The second slope (404) is characterized by an outward inclination; the third slope (702) is characterized by an inward inclination.

5. The new energy power battery cell fixing structure according to claim 3, characterized in that, The adjustment structure includes an internally threaded sleeve (5) rotatably mounted on the cell cover plate (2); the internally threaded sleeve (5) is internally threadedly connected to an externally threaded sleeve (6) that is slidably fitted with the cell cover plate (2); the limiting sleeve (7) is slidably fitted with the externally threaded sleeve (6), and a spring (8) is wrapped around the externally threaded sleeve (6), with the two ends of the spring (8) respectively abutting against the externally threaded sleeve (6) and the limiting sleeve (7).

6. The new energy power battery cell fixing structure according to claim 4, characterized in that, The connecting sleeve (9) is provided with a fourth slope (901).

7. The new energy power battery cell fixing structure according to claim 4, characterized in that, A first slope (301) is provided between the support column (3) and the docking column (4).

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