Battery cell stacking tool

Abstract

The utility model provides a battery cell stacking tool. The battery cell stacking tool comprises a base, a reference part and a pushing part, the base is provided with an accommodating groove for stacking the battery cells, and the bottom of the base is provided with a notch communicated with the accommodating groove; the reference part can be driven to move to the position above the base, and a reference surface is arranged at the bottom of the reference part. And the pushing piece is located below the base, can be driven to move upwards, penetrates through the notches to push the battery cells, and enables the top surfaces of the battery cells to be attached to the reference surface. According to the battery cell stacking tool disclosed by the utility model, by arranging the reference piece and the pushing piece, after the battery cells are stacked in the accommodating groove, the battery cells can be pushed through the pushing piece, so that the top surface of each battery cell is attached to the reference surface of the reference piece, the flatness of the top of a stacked battery module is better through the reference surface, and the battery cell stacking tool is simple in structure and convenient to use. Operation is convenient, and good practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion batteries, in particular to a battery core stacking tool. Background Art

[0002] At present, the modules in the power battery pack are basically stacked on the stacking tool and then placed into the battery pack shell through the lifting equipment. The existing stacking tool usually stacks the modules based on the lower surface of the module during the stacking process. This stacking scheme will result in poor flatness of the upper surface of the module. Many current battery packs design the water cooling plate on the upper surface of the module. If the flatness of the top of the module is poor, it is easy to cause uneven thickness of the thermal conductive structural adhesive between the top of the module and the cold plate, thereby affecting the thermal management performance.

[0003] In addition, since the distance between the highest one or several cells and the cold plate is small or even zero, there is a serious risk of insulation failure. After the cold plate is installed, it needs to be glued with a glue pressing tool. Usually, the maximum pressure that a single cell can withstand is about 2kN. In order to meet the requirements of the glue pressing area, the glue pressing force is usually greater than 5kN. In this case, the highest cells will be under greater pressure, resulting in deformation. In addition, if the flatness of the top of the module is poor, the downward movement of the highest cell during glue pressing will apply a greater pulling force to the bus that has been welded, posing a risk of failure. Utility Model Content

[0004] In view of this, the utility model aims to provide a battery cell stacking tool to facilitate better flatness of the top of the stacked battery module.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A battery cell stacking tool comprises a base, a reference part, and a push part;

[0007] The base is provided with a receiving groove for stacking power cores, and the bottom of the base is provided with a notch communicating with the receiving groove;

[0008] The reference member can be driven to move above the base, and a reference surface is provided at the bottom of the reference member;

[0009] The pushing member is located below the base, and can be driven to move upward, pass through the notch to push each of the battery cells, and make the top surface of each of the battery cells fit with the reference surface.

[0010] Furthermore, the base includes a first part and a second part which are arranged at an interval, and the receiving groove and the notch are formed between the first part and the second part.

[0011] Furthermore, it also includes a first driving member connected to the first part and the second part, and the first driving member can drive the first part and the second part to move along a first direction.

[0012] Furthermore, the pushing members are multiple groups arranged at intervals along the second direction, each group of the pushing members is used to push each of the battery cells, and each group of the pushing members is multiple and arranged at intervals along the first direction.

[0013] Furthermore, the pushing member includes a pushing rod for pushing the battery cell.

[0014] Furthermore, it also includes a second driving member, which is used to push the pushing rod to move upward.

[0015] Furthermore, the push rod includes a rod body, and an extension portion provided at the top of the rod body and extending radially outward from the rod body;

[0016] The pushing member further includes a spring sleeved on the rod body, and the second driving member drives the pushing rod to move upward by pushing the spring.

[0017] Furthermore, it also includes an adsorption member for adsorbing the top surface of each of the battery cells.

[0018] Furthermore, the reference member includes a reference plate, and the reference surface is arranged on the reference plate.

[0019] Furthermore, the reference plate is provided with an escape opening for evading the adsorption component.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] The battery cell stacking tooling described in the utility model is provided with a reference part and a pushing part. After the battery cells are stacked in the accommodating groove, the battery cells can be pushed by the pushing part, so that the top surface of each battery cell is fitted with the reference surface of the reference part, and then the top of the stacked battery module has a better flatness through the reference surface. The structure is simple, the operation is convenient, and the practicality is good.

[0022] In addition, by providing a first driving member to drive the first part and the second part to move, it is convenient to adjust the distance between the first part and the second part, so that the base can adapt to the stacking of battery cells of different lengths. In the process of putting the module into the box, the first part and the second part can also be withdrawn by the first driving member, thereby facilitating the operation of putting the battery module into the box.

[0023] In addition, by sleevedly arranging a spring on the rod body and driving the second driving member to move the pushing rod upward through the pushing spring, the action of the second driving member can be buffered and the action error can be eliminated to prevent the extrusion damage to the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the battery cell stacking tooling structure according to an embodiment of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure when a battery cell is accommodated on the base according to an embodiment of the utility model;

[0027] Figure 3 A top view of a battery cell stack according to an embodiment of the utility model;

[0028] Figure 4 for Figure 3 Sectional view in the AA direction;

[0029] Figure 5 It is a partial structural schematic diagram of the battery cell stacking tooling according to an embodiment of the utility model;

[0030] Figure 6 It is a schematic structural diagram of the push member and the sliding sleeve described in an embodiment of the utility model.

[0031] Description of reference numerals:

[0032] 1. Base; 101. First part; 102. Second part; 2. Reference member; 201. Reference plate; 202. Reference surface; 3. Push member; 301. Push rod; 3011. Rod body; 3012. Extension part; 302. Spring; 4. Receiving groove; 5. Notch; 6. Sliding sleeve; 7. Adsorption member; 8. Avoidance port; 9. Battery cell. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0037] Embodiment 1

[0038] This embodiment relates to a battery cell stacking tool, the overall structure of which is as follows: Figure 1 and Figure 3 and Figure 4 As shown in , the battery stacking tooling includes a base 1, a reference part 2, and a push member 3. The base 1 is provided with a receiving groove 4 for stacking the battery cells 9, and the bottom of the base 1 is provided with a notch 5 connected to the receiving groove 4. The reference part 2 can be driven to move above the base 1, and the bottom of the reference part 2 is provided with a reference surface 202. The push member 3 is located below the base 1, and the push member 3 can be driven to move upward, and pass through the notch 5 to push each battery cell 9, and make the top surface of each battery cell 9 fit with the reference surface 202.

[0039] The battery cell stacking tooling of the present embodiment is provided with a reference part 2 and a pushing part 3. After the battery cells 9 are stacked in the accommodating grooves 4, the pushing part 3 can be used to push the battery cells 9, so that the top surface of each battery cell 9 is in contact with the reference surface 202 of the reference part 2, and then the top of the stacked battery module has a better flatness through the reference surface 202. The structure is simple, the operation is convenient, and the practicality is good.

[0040] Based on the above overall introduction, as a preferred implementation method, Figure 2 and Figure 4As shown in FIG. 1 , in this embodiment, the base 1 includes a first portion 101 and a second portion 102 arranged at intervals, and the receiving groove 4 and the notch 5 are formed between the first portion 101 and the second portion 102. Such an arrangement has a simple structure and is convenient for arrangement.

[0041] Preferably, the battery stacking tool of this embodiment further includes a first driving member connected to the first part 101 and the second part 102, and the first driving member can drive the first part 101 and the second part 102 to move along the first direction. It should be noted that the above-mentioned first direction can be along the length direction of the battery cell 9. By providing the first driving member, it is convenient to adjust the spacing between the first part 101 and the second part 102, which is conducive to making the base 1 adapt to the stacking of battery cells 9 of different lengths.

[0042] In addition, during the process of placing the module into the box, the first part 101 and the second part 102 can also be removed by the first driving member, thereby facilitating the placing of the battery module into the box. The first driving member can include a cylinder, a linear module, or other driving structures commonly used in the prior art, which are respectively connected to the first part 101 and the second part 102, and can drive the first part 101 and the second part 102 to move.

[0043] Preferably, in this embodiment, the pushing members 3 are arranged in a plurality of groups at intervals along the second direction, each group of pushing members 3 is used to push each battery cell 9, and each group of pushing members 3 is arranged in a plurality at intervals along the first direction. By providing each group of pushing members 3 for pushing each battery cell 9, it is convenient to ensure that the top surface of each battery cell 9 is in contact with the reference surface 202, thereby facilitating the flatness of the top of the battery module, and each group of pushing members 3 is arranged in a plurality at intervals, which is conducive to ensuring the stability of each group of pushing members 3 when pushing the battery cell 9 upward.

[0044] like Figure 4 As shown in , each group of push members 3 includes five push members 3. Of course, the number of each group of push members 3 is not limited to five, and it can also be three, six, seven, eight, etc. It should also be noted that the second direction can be along the stacking direction of the battery cells 9.

[0045] As a preferred embodiment, as shown in FIG6 , in this embodiment, the push member 3 includes a push rod 301 for pushing the battery cell 9. Such a configuration has a simple structure and is easy to assemble. In addition, the battery cell stacking tool of this embodiment also includes a second driving member, which is used to push the push rod 301 to move upward. In specific implementation, the second driving member can be a cylinder commonly used in the prior art, which has a simple structure and is easy to arrange, and will not be described in detail here.

[0046] As a preferred embodiment, Figure 6As shown in , in this embodiment, the push rod 301 includes a rod body 3011, and an overhang 3012 provided at the top of the rod body 3011 and extending radially outwardly along the rod body 3011. The push member 3 also includes a spring 302 sleeved on the rod body 3011, and the second driving member drives the push rod 301 to move upward through the push spring 302. By sleeved the spring 302 on the rod body 3011, and the second driving member drives the push rod 301 to move upward through the push spring 302, it is beneficial to buffer the action of the second driving member, and to eliminate action errors, thereby preventing the battery cell 9 from being squeezed and damaged.

[0047] The protruding portion 3012 is provided to facilitate the spring 302 to push the push rod 301. In a specific implementation, a sleeve 6 can be sleeved on the rod body 3011 below the spring 302, and the driving end of the second driving member is connected to the sleeve 6, so as to facilitate pushing the spring 302 through the sleeve 6.

[0048] As a preferred implementation method, Figure 4 and Figure 5 As shown in , the battery stacking tool of this embodiment further includes an adsorbent 7 for adsorbing the top surface of each battery cell 9. By providing the adsorbent 7, after the top surface of each battery cell 9 is attached to the reference surface 202, each battery cell 9 can be adsorbed by the adsorbent 7, so that the adsorbent 7 and the module can be driven to move by a hoisting device or a mechanical arm to place the stacked battery module into the battery pack.

[0049] As a preferred example, Figure 4 As shown in FIG. 1 , in this embodiment, the reference member 2 includes a reference plate 201, and a reference surface 202 is disposed on the reference plate 201, which has a simple structure and is easy to process. In addition, a clearance opening 8 for avoiding the adsorption member 7 is disposed on the reference plate 201, so that the adsorption member 7 can approach or move away from the reference surface 202, which is convenient for the arrangement of the adsorption member 7 and the adsorption of the battery cell 9.

[0050] In specific implementation, both the reference member 2 and the adsorption member 7 can be arranged on an external mechanical arm, and a cylinder for driving the adsorption member 7 to move up and down can be arranged on the mechanical arm, so as to facilitate it to approach or move away from the reference plane 202. In addition, when the stacked cells 9 are loaded into the battery pack box, the adsorption member 7 can maintain the fit between the reference plane 202 and the top of the cell 9 while adsorbing the cell 9, thereby ensuring that the position of the cell 9 is fixed during the entire process of the module being put into the box. In addition, the adsorption member 7 can use a vacuum suction cup commonly used in the prior art, which will not be described in detail here.

[0051] When the battery cell stacking tool of this embodiment is in use, the battery cells 9 can be stacked in sequence in the accommodating grooves 4 by a robot. After the stacking is completed, each battery cell 9 is pushed upward by the pushing member 3, and each battery cell 9 is made to contact with the reference surface 202. Then, the bus bars between the battery cells 9 are welded. After the welding is completed, each battery cell 9 is adsorbed by the adsorption member 7 to ensure that the overall position of the battery cell 9 remains unchanged. The adsorption member 7 and the stacked battery modules are driven to move into the battery pack box by a robot arm or an external lifting tool, thereby completing the module entry operation.

[0052] The battery stacking tool of this embodiment can push the battery cell 9 through the push member 3, so that the top surface of each battery cell 9 fits with the reference surface 202 of the reference member 2, thereby making the top of the stacked battery module have a good flatness, simple structure, convenient operation, and good practicality. In addition, the push rod 301 is driven to move upward through the second driving member push spring 302, which is conducive to buffering the action of the second driving member, and is conducive to eliminating action errors and preventing extrusion damage to the battery cell 9.

[0053] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery cell stacking tool, characterized in that: It includes a base, a reference part, and a push part; The base is provided with a receiving groove for stacking power cores, and the bottom of the base is provided with a notch communicating with the receiving groove; The reference member can be driven to move above the base, and a reference surface is provided at the bottom of the reference member; The pushing member is located below the base, and can be driven to move upward, pass through the notch to push each of the battery cells, and make the top surface of each of the battery cells fit with the reference surface.

2. The battery cell stacking tool according to claim 1, characterized in that: The base includes a first portion and a second portion which are spaced apart from each other, and the receiving groove and the notch are formed between the first portion and the second portion.

3. The battery cell stacking tool according to claim 2, characterized in that: It also includes a first driving member connected to the first part and the second part, and the first driving member can drive the first part and the second part to move along a first direction.

4. The battery cell stacking tool according to claim 3, characterized in that: The pushing members are multiple groups arranged at intervals along the second direction, each group of the pushing members is used to push each of the battery cells, and each group of the pushing members is multiple and arranged at intervals along the first direction.

5. The battery cell stacking tool according to claim 1, characterized in that: The pushing member includes a pushing rod for pushing the battery core.

6. The battery cell stacking tool according to claim 5, characterized in that: It also includes a second driving member, which is used to push the pushing rod to move upward.

7. The battery cell stacking tool according to claim 6, characterized in that: The push rod comprises a rod body and an extension portion provided at the top of the rod body and extending radially outwardly along the rod body; The pushing member further includes a spring sleeved on the rod body, and the second driving member drives the pushing rod to move upward by pushing the spring.

8. The battery cell stacking tool according to claim 1, characterized in that: It also includes an adsorption member for adsorbing the top surface of each of the battery cells.

9. The battery cell stacking tool according to claim 8, characterized in that: The reference member comprises a reference plate, and the reference surface is arranged on the reference plate.

10. The battery cell stacking tool according to claim 9, characterized in that: The reference plate is provided with an escape opening for escaping the adsorption member.

Images