Pressure maintaining mechanism and pressure maintaining device

Abstract

The utility model relates to the field of battery cell module pressure maintaining, in particular to a pressure maintaining mechanism and a pressure maintaining device.The pressure maintaining mechanism comprises a plate body, the plate body can be connected with a module stacking tool, and a plurality of pressure applying assemblies are arranged on the same side of the plate body; the pressure applying assembly comprises an abutting piece and an elastic piece, one end of the elastic piece is connected with the plate body, and the other end of the elastic piece is connected with the abutting piece; the pushing piece can be used for clamping and connecting a pole column of the cylindrical battery cell; the plate body is connected with the module stacking tool, so that the pressure maintaining of the cylindrical battery cell module is realized, and the development cost of the tool is reduced; controllable pressure can be applied to each pole through the elastic piece, so that the quality of the cylindrical battery cell module is improved; the pressure maintaining device comprises a module stacking tool and a pressure maintaining mechanism, and the plate body is detachably connected with the module stacking tool; and the deviation of the cylindrical battery cell can be avoided, so that the glue pressing of the battery cell module is more uniform.

Description

Technical Field

[0001] The utility model relates to the field of pressure maintaining of electric core modules, and in particular to a pressure maintaining mechanism and a pressure maintaining device. Background Art

[0002] After the cylindrical battery cell modules are stacked, the poles of the cylindrical battery cells need to be glued; the gluing operation requires the cylindrical battery cell modules to be transferred to the pressure-maintaining tooling. The module stacking tooling can adjust the position of the battery cells in the battery case. When the battery cells are stacked, the bottom of the battery cells abuts against the bottom plate of the battery case.

[0003] However, during the process of transferring the cylindrical battery cell module to the pressure-holding tooling, there is a risk of the cylindrical battery cell shifting; moreover, due to the surface contour of the battery case, ordinary pressure-holding tooling cannot ensure that the glue at each pole position can be pressed open, resulting in a low yield of the cylindrical battery cell module; separately designing the pressure-holding tooling increases the production cycle and cost of the tooling.

[0004] Therefore, there is an urgent need for a technical solution to solve the technical problems that cylindrical battery cells have the risk of offset and the laminating effect is poor during the laminating operation. Utility Model Content

[0005] The utility model aims to provide a pressure-maintaining mechanism and a pressure-maintaining device to solve the technical problems that cylindrical electric cores have the risk of deviation and poor glue pressing effect during glue pressing operation.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A pressure-maintaining mechanism comprises a plate body, the plate body being connectable to a module stacking tooling, and a plurality of pressure-applying components being arranged on the same side of the plate body;

[0008] The pressure-applying assembly comprises a push member and an elastic member, one end of the elastic member is connected to the plate body, and the other end is connected to the push member;

[0009] The push piece can clamp the pole connected to the cylindrical battery cell.

[0010] The utility model discloses a pressure-maintaining mechanism, by setting a plate body, so that the plate body is fixedly connected with the module stacking tooling, the pressure-applying component arranged on the plate body can abut against the pole on the top of the battery cell, and the cylindrical battery cell is squeezed together by the bottom plate of the battery box body and the pressure-applying component to achieve the pressure-maintaining condition of the cylindrical battery cell; the cylindrical battery cell module can complete the glue pressing operation at the module stacking tooling to avoid the battery cell in the module from being offset due to being located in the cylindrical battery cell module; the pressure-applying component is composed of an elastic member and a push-pushing member, and the push-pushing member can be clamped on the pole to maintain The push piece can apply pressure to the pole at the correct position; the elastic piece has a certain range of motion, and when the cylindrical battery cell module is pressed, each pole can be abutted by the push piece, overcoming the surface contour of the box body, so that each cylindrical battery cell located in the battery box body can be well pressurized, solving the problem of uneven pressing of the cylindrical battery cell module; by adjusting the expansion and contraction amount of the elastic piece, the pressure applied by each push piece on the pole can be controllable; saving the tooling design cost and shortening the tooling manufacturing cycle.

[0011] As a preferred solution of the utility model, the plate body is arranged with a plurality of mounting grooves, and the elastic member is adapted to be connected with the mounting grooves. By providing the mounting grooves, the elastic member is detachably connected with the mounting grooves, and the elastic member can be arranged according to the positions of different battery module poles.

[0012] As a preferred solution of the utility model, the elastic member includes a guide sleeve, a guide rod and a spring member, the guide sleeve is nested with the installation groove, the guide sleeve is slidably connected with the guide rod, one end of the spring member is connected with the guide sleeve, and the other end is connected with the push member. The guide sleeve is adapted to be embedded in the installation groove; the push member is guided by the relative sliding of the guide rod and the guide sleeve to prevent the push member from deflecting when pressure is applied; the spring member can apply pressure to the push member so that the push member applies pressure to the pole.

[0013] As a preferred solution of the utility model, the spring member includes a rectangular spring, and the guide rod passes through the rectangular spring. The rectangular spring has a compact structure, strong load-bearing capacity, and good dimensional stability, which can make the push member have a larger telescopic range and make the push member more applicable to battery boxes with different surface contours.

[0014] As a preferred solution of the utility model, the guide sleeve is provided with a limiting boss, and the limiting boss is in contact with the plate body; the limiting boss is provided with a connecting hole, and the connecting hole is bolted to the plate body. The boss is in contact with the plate body, and the boss can bear the reaction force during the glue pressing operation, so that the push piece can continuously apply pressure to the pole; the connecting hole can fix the push piece on the plate body.

[0015] As a preferred solution of the utility model, the push member is provided with a clamping groove, and the clamping groove is clamped and connected with the pole of the cylindrical battery cell. The shape of the clamping groove is adapted to the shape of the pole, so that the push member is limited.

[0016] As a preferred solution of the utility model, the plate body includes a rectangular plate, and first reinforcing beams are provided at opposite ends of the rectangular plate, and a connecting portion is provided at the end of the first reinforcing beam, and the connecting portion is used to connect with the module stacking tooling. The first reinforcing beam and the elastic member are located on the same side of the rectangular plate and are arranged along the width direction of the rectangular plate; both ends of the first reinforcing beam extend beyond the rectangular plate as connecting portions, and bolt holes are provided in the connecting portions, and the first reinforcing beam is connected to the module stacking tooling by bolt connection.

[0017] As a preferred solution of the utility model, the rectangular plate is provided with a second reinforcing beam, the second reinforcing beam is perpendicular to the first reinforcing beam, and the second reinforcing beam is provided on the side of the rectangular plate away from the elastic member. By providing two second reinforcing beams, the second reinforcing beams can further strengthen the strength of the rectangular plate, prevent the rectangular plate from deforming when pressure is applied, and enable the plate body to apply stable pressure to the cylindrical battery module.

[0018] A pressure-maintaining device comprises a module stacking tool and the above-mentioned pressure-maintaining mechanism, wherein the plate body is detachably connected to the module stacking tool.

[0019] The utility model provides a pressure-maintaining device, which is detachably connected to the module stacking tooling through a plate body, so that the glue pressing operation of the battery cell module can be carried out on the module stacking tooling, avoiding the position displacement of the cylindrical battery cell due to the shaking of the battery cell module when transferring the battery cell module to the pressure-maintaining tooling, and reducing the development cost of the pressure-maintaining tooling; during the glue pressing operation, each pole can be applied with controllable pressure through the elastic part, thereby ensuring the uniformity of the glue pressing of the cylindrical battery cell module.

[0020] As a preferred solution of the utility model, the module stacking tooling is provided with a box support, the box support is arranged opposite to the plate, and the box support is provided with a pressure-bearing crossbeam. The box support supports the battery box, and the box support is used to support the battery box. When in use, the cylindrical battery cell is placed in the battery box, and the box support is arranged opposite to the pressure-holding mechanism. The bottom plate and the pressure-applying assembly of the battery box jointly squeeze the cylindrical battery cell, so that the box support and the pressure-holding mechanism clamp the cylindrical battery cell module; by providing a pressure-bearing crossbeam, the box support can withstand greater pressure, thereby adapting to the gluing operation of the cylindrical battery cell module.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0022] 1. A pressure-maintaining mechanism of the utility model is provided with a plate body, so that the plate body is fixedly connected with the module stacking tooling. The pressure-applying assembly provided on the plate body can abut against the pole on the top of the cylindrical battery cell, and the cylindrical battery cell is squeezed together by the bottom plate of the battery box and the pressure-applying assembly to achieve the pressure-maintaining condition of the cylindrical battery cell; the cylindrical battery cell module can complete the glue pressing operation at the module stacking tooling to avoid the position displacement of the battery cell in the module due to the cylindrical battery cell module; the pressure-applying assembly is composed of an elastic member and a push member, and the push member can be clamped on the pole. , ensuring that the push piece can apply pressure to the pole at the correct position; the elastic piece has a certain range of motion, and when the cylindrical battery cell module is pressed, each pole can be abutted by the push piece, overcoming the surface contour of the box body, so that each cylindrical battery cell located in the battery box body can be well pressurized, solving the problem of uneven pressing of the cylindrical battery cell module; by adjusting the expansion and contraction amount of the elastic piece, the pressure applied by each push piece on the pole can be controllable; saving the tooling design cost and shortening the tooling manufacturing cycle.

[0023] 2. The utility model provides a pressure-maintaining mechanism with a simple structure, easy manufacturing and convenient use. It realizes pressure maintenance of the cylindrical battery cell module by connecting the plate body with the module stacking tooling, reduces the tooling development cost and avoids the displacement of the cylindrical battery cell. The elastic part enables controllable pressure to be applied to each pole, so that pressure can be applied to each pole, thereby improving the quality of the cylindrical battery cell module and having good economic and practical value.

[0024] 3. A pressure-maintaining device of the utility model is detachably connected to the module stacking tooling through a plate body, so that the glue pressing operation of the battery cell module can be carried out on the module stacking tooling, avoiding the position displacement of the cylindrical battery cell and reducing the development cost of the pressure-maintaining tooling; during the glue pressing operation, controllable pressure can be applied to each pole through the elastic part, ensuring the uniformity of the glue pressing of the cylindrical battery cell module. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the structure of a pressure-maintaining mechanism in Example 1;

[0026] Figure 2 is a schematic diagram of the structure of a pressure-maintaining mechanism in Example 1;

[0027] Figure 3 is a schematic structural diagram of a pressure-applying assembly of Example 1;

[0028] Figure 4 is a schematic structural diagram of a pressure-applying assembly of Example 1;

[0029] Figure 5 It is a structural schematic diagram of a pressure maintaining device of Example 4.

[0030] icon:

[0031] 1-plate body, 2-push member, 3-installation groove, 4-first reinforcement beam, 5-second reinforcement beam, 6-elastic member, 7-clamping groove, 8-module stacking tooling, 9-box bracket, 10-pressure-bearing beam, 11-connecting part, 61-guide sleeve, 62-guide rod, 63-spring member, 64-limiting boss. DETAILED DESCRIPTION

[0032] The utility model is described in detail below in conjunction with the accompanying drawings.

[0033] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0034] Example 1

[0035] like Figure 1-Figure 4 A pressure-maintaining mechanism shown includes a plate body 1, the plate body 1 can be connected to a module stacking tool 8, and a plurality of pressure-applying components are arranged on the same side of the plate body 1;

[0036] The pressure-applying assembly includes a push member 2 and an elastic member 6, one end of the elastic member 6 is connected to the plate body 1, and the other end is connected to the push member 2;

[0037] The push member 2 can clamp the pole connected to the cylindrical battery cell.

[0038] By setting a plate body, a pressure-applying assembly arranged on the plate body 1 can abut against the pole on the top of the cylindrical battery cell, and the cylindrical battery cell is squeezed together by the bottom plate of the battery box and the pressure-applying assembly to achieve the pressure-maintaining condition of the cylindrical battery cell; the cylindrical battery cell module can complete the glue pressing operation at the module stacking tooling to avoid the battery cell in the module from being shifted in position due to being located in the cylindrical battery cell module; the pressure-applying assembly is composed of an elastic member 6 and a push member 2, and the push member 2 can be clamped on the pole to ensure that the push member 2 can apply pressure to the pole at the correct position; the elastic member 6 has a certain range of motion, and when the cylindrical battery cell module is glued, each pole can be abutted by the push member 2, which overcomes the surface contour of the battery box, so that each cylindrical battery cell located in the battery box can be well pressure-maintained, and solves the problem of uneven glue pressing of the cylindrical battery cell module; by adjusting the expansion and contraction amount of the elastic member 6, the pressure applied by each push member 2 to the pole can be controllable; the tooling design cost is saved and the tooling manufacturing cycle is shortened.

[0039] Specifically, the plate body 1 is arranged with a plurality of mounting grooves 3, and the elastic member 6 is adapted to be connected with the mounting groove 3. The elastic member 6 can be detachably connected with the mounting groove 3, and the elastic member 6 can be arranged according to the position of the pole of different battery cell modules; when maintaining pressure for different cylindrical battery cell modules, the magnitude of the pressure applied to the pole can be controlled by replacing the spring member 63 with different expansion and contraction amounts.

[0040] Specifically, the elastic member 6 is composed of a guide sleeve 61, a guide rod 62 and a spring member 63. The spring member 63 is a rectangular spring. One end of the guide sleeve 61 can be embedded in the mounting groove 3. A slideway is arranged inside the guide sleeve 61. The guide rod 62 is adapted to the slideway so that the guide sleeve 61 can slide relative to the guide rod 62. The two ends of the rectangular spring are respectively connected to the guide sleeve 61 and the push member 2. The guide rod 62 passes through the hollow part of the rectangular spring. When the guide rod 62 slides relative to the guide sleeve 61, the rectangular spring can be compressed or stretched. Thus, the rectangular spring can exert pressure on the push member 2.

[0041] Specifically, the guide sleeve 61 is provided with a limiting boss 64 that can abut against the plate body 1; the limiting boss 64 is provided with a connecting hole, and the connecting hole is bolted to the plate body 1; the limiting boss 64 abuts against the plate surface located on one side of the push member 2, so that the limiting boss 64 can transmit the reaction force of the pole to the plate body 1, so that the plate body 1 can apply pressure to the pole more stably; the guide sleeve 61 is fixed to the plate body 1 by passing the bolt through the connecting hole.

[0042] Specifically, the push member 2 is a cylindrical structural member, a rectangular spring is connected to one end of the cylindrical structural member, and a cylindrical clamping groove 7 is provided at the other end. The cylindrical clamping groove 7 is adapted to clamp the cylindrical pole.

[0043] Specifically, the plate body 1 is a rectangular plate, and first reinforcing beams 4 are arranged at opposite ends of the rectangular plate. The first reinforcing beams 4 are arranged along the width direction of the plate body 1, which can prevent the rectangular plate from deforming in the width direction, so that the plate body 1 can apply stable pressure to the pole; both ends of the first reinforcing beam 4 extend beyond the rectangular plate, and the part of the first reinforcing beam 4 extending beyond the plate body 1 is used as a connecting part 11, and a bolt hole is opened on the connecting part 11, which is detachably connected to the module stacking tooling 8 through the bolt hole, so that the rectangular plate can be installed and removed on the module stacking tooling 8.

[0044] Specifically, a second reinforcing beam 5 is provided on the rectangular plate, and the second reinforcing beam 5 is provided along the length direction of the rectangular plate, so that the first reinforcing beam 4 and the second reinforcing beam 5 are perpendicular to each other, thereby avoiding deformation of the rectangular plate in the width direction; the second reinforcing beam 5 and the first reinforcing beam 4 must be kept away from the pressure component to avoid interference from the pressure component.

[0045] Specifically, the first reinforcing beam 4 and the second reinforcing beam 5 are respectively arranged on both sides of the rectangular plate, so that the first reinforcing beam 4 is easy to connect with the module stacking tool 8, and the second reinforcing beam 5 is prevented from interfering with the module stacking tool 8.

[0046] Specifically, a handle is provided on the rectangular plate, and the handle can be convenient for operators to hold and operate the pressure maintaining mechanism.

[0047] A pressure-maintaining mechanism of this embodiment, when in use, installs an adaptive pressure component according to the arrangement of cells in the cylindrical cell module, so that each pole can be pressurized by the push member 2; fixes the rectangular plate on the module stacking tooling 8 through the connecting portion 11, so that the pressure nozzle continuously applies pressure to the pole, thereby maintaining the pressure on the cell module.

[0048] Example 2

[0049] The pressure-maintaining mechanism of this embodiment has a structure substantially the same as that of the first embodiment, but is different from the first embodiment in that the guide rod 62 and the spring member 63 are spaced apart.

[0050] Specifically, the spring member 63 is detachably connected to the copper sleeve, and the spring member 63 is detachably connected to the guide sleeve 61, which is convenient for spring replacement and maintenance; by replacing different spring members 63, the pressure of the push member 2 on the pole can be changed, thereby adapting to different cylindrical battery module pressure maintenance.

[0051] Example 3

[0052] The structure of a pressure-maintaining mechanism of this embodiment is substantially the same as that of Embodiment 1. The difference from Embodiment 1 is that the elastic member 6 is a cylinder, the output end of the cylinder is connected to the push member 2, and the cylinder is adaptably connected to the mounting groove 3.

[0053] Preferably, the elastic member 6 is a hydraulic cylinder.

[0054] Specifically, the pole pressure is controlled by controlling the cylinder pressure.

[0055] Example 4

[0056] like Figure 5 A pressure-maintaining device shown includes a module stacking tool 8 and a pressure-maintaining mechanism of Example 1 / Example 2 / Example 3, and the plate body 1 is detachably connected to the module stacking tool 8.

[0057] Specifically, the module stacking tool 8 is provided with a box support 9, which is arranged opposite to the plate 1, and the box support 9 is provided with a pressure-bearing crossbeam 10. The box support 9 supports the battery box, and the box support 9 and the pressure-holding mechanism are arranged opposite to each other, so that the box support 9 and the pressure-holding mechanism clamp the cylindrical battery module; the pressure-bearing crossbeam 10 is provided so that the box support 9 can withstand greater pressure, thereby adapting to the gluing operation of the cylindrical battery module.

[0058] The utility model provides a pressure-maintaining device, which is detachably connected to the module stacking tool 8 through a plate body 1, so that the glue pressing operation of the battery cell module can be carried out on the module stacking tool 8, thereby avoiding the position displacement of the cylindrical battery cell and reducing the development cost of the pressure-maintaining tool. During the glue pressing operation, controllable pressure can be applied to each pole through the elastic member 6, thereby ensuring the uniformity of the glue pressing of the cylindrical battery cell module.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure-maintaining mechanism, characterized in that: It comprises a plate body (1), the plate body (1) being connectable to a module stacking tool (8), and a plurality of pressure applying components being arranged on the same side of the plate body (1); The pressure-applying assembly comprises a push member (2) and an elastic member (6), one end of the elastic member (6) being connected to the plate body (1) and the other end being connected to the push member (2); The push member (2) can clamp the pole connected to the cylindrical battery cell.

2. A pressure-maintaining mechanism according to claim 1, characterized in that: The plate body (1) is provided with a plurality of mounting grooves (3) arranged in an array, and the elastic member (6) is adaptively connected to the mounting grooves (3).

3. A pressure-maintaining mechanism according to claim 2, characterized in that: The elastic member (6) comprises a guide sleeve (61), a guide rod (62) and a spring member (63); the guide sleeve (61) is nested with the mounting groove (3); the guide sleeve (61) is slidably connected to the guide rod (62); one end of the spring member (63) is connected to the guide sleeve (61) and the other end is connected to the push member (2).

4. A pressure-maintaining mechanism according to claim 3, characterized in that: The spring member (63) comprises a rectangular spring, and the guide rod (62) passes through the rectangular spring.

5. A pressure-maintaining mechanism according to claim 3, characterized in that: The guide sleeve (61) is provided with a limiting boss (64), and the limiting boss (64) abuts against the plate body (1); the limiting boss (64) is provided with a connecting hole, and the connecting hole is bolt-connected to the plate body (1).

6. A pressure-maintaining mechanism according to claim 1, characterized in that: The push member (2) is provided with a clamping groove (7), and the clamping groove (7) is clamped and connected to the pole of the cylindrical battery cell.

7. A pressure-maintaining mechanism according to any one of claims 1 to 6, characterized in that: The plate body (1) comprises a rectangular plate, and first reinforcing beams (4) are provided at opposite ends of the rectangular plate. A connecting portion (11) is provided at the end of the first reinforcing beam (4), and the connecting portion (11) is used to connect to a module stacking tool (8).

8. A pressure-maintaining mechanism according to claim 7, characterized in that: The rectangular plate is provided with a second reinforcing beam (5), the second reinforcing beam (5) is perpendicular to the first reinforcing beam (4), and the second reinforcing beam (5) is arranged on a side of the rectangular plate away from the elastic member (6).

9. A pressure-maintaining device, characterized in that: It comprises a module stacking tool (8), and also comprises a pressure-maintaining mechanism according to any one of claims 1 to 8, wherein the plate body (1) is detachably connected to the module stacking tool (8).

10. A pressure-maintaining device according to claim 9, characterized in that: The module stacking tooling (8) is provided with a box support (9), the box support (9) is arranged opposite to the plate body (1), and the box support (9) is provided with a pressure-bearing crossbeam (10).

Images