CTP battery cell stacking tool

Abstract

The utility model relates to and discloses a CTP (computer to plate) battery cell stacking tool. Relates to the technical field of new energy batteries. The battery pack specifically comprises a plurality of single battery cells, a pre-fixing plate used for stacking the plurality of single battery cells, and a plurality of first connecting pieces used for connecting the plurality of single battery cells with the pre-fixing plate; the plurality of single battery cells are arranged on the pre-fixing plate in an array manner, the plurality of first connecting pieces are used for detachably connecting the plurality of single battery cells with the pre-fixing plate respectively, and the pre-fixing plate is detachably connected with the battery box body. According to the utility model, the plurality of single battery cells are detachably connected with the pre-fixing plate respectively through the plurality of first connecting pieces, and the pre-fixing plate is detachably connected with the battery box body, so that when the single battery cells are repaired and maintained, the pre-fixing plate can be detached from the battery box body firstly, and then the single battery cells can be repaired and maintained by detaching the connecting pieces; and the plurality of single battery cells can be separated from the pre-fixing plate respectively, so that the single battery cells are easier and more convenient to disassemble, and the subsequent repair and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy batteries, in particular to a CTP cell stacking tooling. Background Art

[0002] When assembling a traditional battery pack, multiple single cells are first assembled into battery modules, and then multiple battery modules are encapsulated into a battery pack. The CTP (Cell to Pack) technology eliminates the intermediate module link and directly integrates the cells onto the box body of the battery pack, effectively improving the space utilization rate and energy density of the battery pack.

[0003] For existing CTP battery packs, usually a thermal conductive structural adhesive is first applied to the cells, and then multiple cells are stacked by a battery stacking tooling. After the thermal conductive structural adhesive on the cells is basically cured and the multiple cells are fixed on the battery stacking tooling, then a layer of structural adhesive is applied between the battery stacking tooling and the battery pack box body to fix the battery stacking tooling on the box body of the battery pack, so as to realize the installation of multiple cells on the box body of the battery pack. However, for a battery pack in which the cells are bonded by this glue application method, it is not easy to disassemble and repair, greatly increasing the subsequent repair and maintenance costs and unable to meet the requirements of current production.

[0004] Chinese Patent CN219371203U, publication date July 18, 2023, discloses a battery module and a CTP battery, including: an aluminum extrusion cold plate, a battery rack, and a battery structure installed in the battery rack. The battery structure includes a cell group composed of multiple cells. The battery rack has a chamber, and the cells are installed in the chamber in series or in parallel; the aluminum extrusion cold plate is arranged below the cell group, and the cells and the aluminum extrusion cold plate are connected by a thermal conductive gel, and the aluminum extrusion cold plate is connected to the battery rack. However, in this CTP battery, the cells and the aluminum extrusion cold plate are connected by a thermal conductive gel, which is not easy to disassemble and repair, greatly increasing the subsequent repair and maintenance costs. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a CTP cell stacking tooling, aiming at the deficiencies of the above-mentioned existing technologies, which can make the disassembly of the cells simpler and more convenient, thereby reducing the subsequent repair and maintenance costs.

[0006] The present utility model provides a CTP battery cell stacking tooling, which includes a plurality of single battery cells, a pre-fixing plate for stacking the plurality of single battery cells, and a plurality of first connecting members for respectively connecting the plurality of single battery cells to the pre-fixing plate; the plurality of single battery cells are arranged in an array on the pre-fixing plate, and the plurality of first connecting members respectively detachably connect the plurality of single battery cells to the pre-fixing plate, and the pre-fixing plate is detachably connected to the battery box body.

[0007] Further, a plurality of first connection holes are provided on the pre-fixing plate, and second connection holes are provided on the single battery cell. After a first connecting member penetrates through a first connection hole, it is detachably connected to the second connection hole.

[0008] Further, the first connection holes are through holes, the second connection holes are threaded holes, and the first connecting member includes a bolt. One end of a bolt penetrates through the through hole and is screwed to the threaded hole.

[0009] Further, the first connecting member further includes a flexible pad sleeved on the bolt. When one end of the bolt penetrates through the through hole and is screwed to the threaded hole, the flexible pad abuts against the pre-fixing plate.

[0010] Further, a plurality of limiting grooves for respectively limiting the plurality of single battery cells are provided on the pre-fixing plate. The plurality of limiting grooves are arranged in an array on the pre-fixing plate. The plurality of first connection holes are respectively provided at the bottoms of the plurality of limiting grooves. The second connection holes are provided at the bottoms of the single battery cells. The outer contour shapes of the plurality of limiting grooves respectively match the outer contour shapes of the bottoms of the plurality of single battery cells.

[0011] Further, a flared opening is provided at the top of the limiting groove, and the single battery cell enters the limiting groove from the flared opening.

[0012] Further, the stacking tooling further includes a liquid cooling system provided in the pre-fixing plate, and the liquid cooling system is used for dissipating heat from the single battery cells.

[0013] Further, the liquid cooling system includes a liquid cooling channel provided in the pre-fixing plate, an inlet joint for connecting a liquid supply pipe, and an outlet joint for connecting a liquid discharge pipe. Two ends of the liquid cooling channel are respectively communicated with the inlet joint and the outlet joint.

[0014] Further, the liquid cooling channel includes an inlet channel communicated with the inlet joint, a discharge channel communicated with the outlet joint, and a plurality of heat dissipation channels with two ends respectively communicated with the inlet channel and the discharge channel. The plurality of heat dissipation channels are respectively distributed between multiple rows of the limiting grooves.

[0015] Furthermore, a third connection hole is provided on the pre-fixing plate, and the stacking tooling further includes a second connecting member that passes through the third connection hole at one end and is detachably connected to the battery box body.

[0016] The CTP cell stacking tooling of the present utility model has the following beneficial effects:

[0017] (1) Multiple first connecting members of this stacking tooling respectively detachably connect multiple single cells to the pre-fixing plate, and the pre-fixing plate is detachably connected to the battery box body. Therefore, when repairing and maintaining the single cells, the pre-fixing plate can be first detached from the battery box body, and then through the disassembly of the connecting members, the multiple single cells can be separated from the pre-fixing plate respectively, making the disassembly of the single cells simpler and more convenient, and reducing the subsequent repair and maintenance costs;

[0018] (2) The first connecting member of this stacking tooling further includes a flexible pad. Through the setting of the flexible pad, not only can the bolt be further tightened with the threaded hole of the single cell, thus better fixing the single cell on the pre-fixing plate and enhancing the stability of the installation of the single cell, but also the contact between the bolt and the pre-fixing plate is a flexible contact, thereby preventing damage to the pre-fixing plate caused by the nut when the bolt is tightened and affecting the service life of the pre-fixing plate;

[0019] (3) Multiple limiting grooves corresponding to the multiple single cells one by one are provided on the pre-fixing plate of this stacking tooling, and the outer contour of the limiting groove is adapted to the bottom outer contour of the single cell. The single cell is limited by the limiting groove, so that the first connection hole coincides exactly with the central axis of the second connection hole at the bottom of the single cell, making the fixed installation of the multiple single cells on the pre-fixing plate simpler and greatly improving the production efficiency;

[0020] (4) A flared opening that opens outwards is provided at the top of the limiting groove of this stacking tooling. Through the flared opening, it is easier to insert the bottom of the single cell into the limiting groove from the top of the limiting groove, so that under the condition that the outer contour of the limiting groove is just adapted to the bottom outer contour of the single cell, it is convenient to insert the bottom of the single cell into the limiting groove, ensuring both the alignment accuracy of the second connection hole and the first connection hole and improving the production efficiency;

[0021] (5) This stacking tooling further includes a liquid cooling system provided in the pre-fixing plate. The liquid cooling system is used to dissipate heat from the single cells. Therefore, in this application, the pre-fixing plate not only plays a role in pre-fixing the multiple single cells, but also plays a role in dissipating heat from the multiple single cells, making the practicability of this stacking tooling stronger;

[0022] (6) The liquid cooling channels of this stacking tooling include an inlet liquid channel communicating with the inlet liquid joint, a drain liquid channel communicating with the drain liquid joint, and a plurality of heat dissipation channels with two ends respectively communicating with the inlet liquid channel and the drain liquid channel. The plurality of heat dissipation channels are respectively distributed between multiple rows of limit slots, so that this liquid cooling system can simultaneously dissipate heat from multiple single cells, further enhancing the practicability of this stacking tooling. Brief Description of the Drawings

[0023] The drawings incorporated into the specification and constituting a part of the specification illustrate embodiments of the present invention and, together with the description, are used to explain the principles of the present invention. In these drawings, like reference numerals are used to represent like elements.

[0024] Figure 1 It is an exploded view of the installation of multiple single cells of a CTP cell stacking tooling according to an embodiment of the present invention on a pre-fixing plate;

[0025] Figure 2 It is a structural schematic diagram of a single cell of a CTP cell stacking tooling according to an embodiment of the present invention;

[0026] Figure 3 It is a structural schematic diagram of a pre-fixing plate of a CTP cell stacking tooling according to an embodiment of the present invention;

[0027] Figure 4 It is a partial cross-sectional view in the vertical direction of a pre-fixing plate of a CTP cell stacking tooling according to an embodiment of the present invention;

[0028] Figure 5 It is a cross-sectional view in the horizontal direction of a pre-fixing plate of a CTP cell stacking tooling according to an embodiment of the present invention.

[0029] In the figure: 1, single cell; 11, second connection hole; 2, pre-fixing plate; 21, first connection hole; 22, limit slot; 221, flared opening; 23, third connection hole; 3, bolt; 4, flexible pad; 5, liquid cooling system; 51, inlet liquid joint; 52, inlet liquid channel; 53, heat dissipation channel; 54, drain liquid channel; 55, drain liquid joint. Detailed Embodiments

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1 to 5, A CTP battery cell stacking tooling according to an embodiment of the present utility model includes a plurality of single battery cells 1, a pre-fixing plate 2 for stacking the plurality of single battery cells 1, and a plurality of first connectors for respectively connecting the plurality of single battery cells 1 to the pre-fixing plate 2; the plurality of single battery cells 1 are arranged in an array on the pre-fixing plate 2, and the plurality of first connectors respectively detachably connect the plurality of single battery cells 1 to the pre-fixing plate 2, and the pre-fixing plate 2 is detachably connected to the battery box body.

[0032] In this application, the stacking tooling includes a plurality of single battery cells 1, a pre-fixing plate 2 and a plurality of first connectors. When installing the plurality of single battery cells 1 in the battery box body, first, through the plurality of first connectors, the plurality of single battery cells 1 are respectively fixedly installed on the pre-fixing plate 2, so that the plurality of battery cells are arranged in an array on the pre-fixing plate 2, and then the pre-fixing plate 2 is fixedly connected to the battery box body, thereby realizing the installation of the plurality of single battery cells 1 in the battery box body and completing the orderly stacking of the plurality of single battery cells 1 in the battery box body.

[0033] Since in this application, the plurality of first connectors respectively detachably connect the plurality of single battery cells 1 to the pre-fixing plate 2, and the pre-fixing plate 2 is detachably connected to the battery box body, when repairing and maintaining the single battery cell 1, the pre-fixing plate 2 can be first detached from the battery box body, and then through the detachment of the first connectors, the plurality of single battery cells 1 can be respectively separated from the pre-fixing plate 2, so that the detachment of the single battery cells 1 is simpler and more convenient, reducing the cost of subsequent repair and maintenance.

[0034] In this application, the reason for first fixedly installing the plurality of single battery cells 1 on the pre-fixing plate 2 and then fixing them on the battery box body through the pre-fixing plate 2 to realize the installation of the plurality of single battery cells 1 in the battery box body is that the space in the battery box body is limited, and the operation of respectively fixedly installing the plurality of single battery cells 1 in the battery box body is more inconvenient, increasing the operation difficulty and thus reducing the production efficiency.

[0035] In this application, the fixed installation of the plurality of single battery cells 1 on the pre-fixing plate 2 is carried out outside the battery box body. After the plurality of single battery cells 1 are fixed on the pre-fixing plate 2, the pre-fixing plate 2 is fixedly installed on the battery box body, so that the plurality of single battery cells 1 are simultaneously installed in the battery box body at one time, making the assembly of the CTP battery pack simpler and more convenient, and thus improving the production efficiency.

[0036] Specifically, in this embodiment, a plurality of first connection holes 21 are provided on the pre-fixing plate 2, and second connection holes 11 are provided on the single cell 1. The plurality of first connection holes 21 respectively correspond to the second connection holes 11 on the plurality of single cells 1 one by one. When fixedly installing the plurality of single cells 1 on the pre-fixing plate 2, after a first connecting member penetrates through a first connection hole 21, it is fixedly connected to the second connection hole 11 of the corresponding single cell 1. Repeating this process can complete the fixed installation of the plurality of single cells 1 on the pre-fixing plate 2.

[0037] Conversely, when disassembling the plurality of single cells 1 from the pre-fixing plate 2, by separating the first connecting member from the second connection hole 11 of the corresponding single cell 1, the single cell 1 can be disassembled from the pre-fixing plate 2. Repeating this step can achieve the disassembly of the corresponding single cell 1 from the pre-fixing plate 2, making the disassembly of the single cell 1 simpler and more convenient, and reducing the cost of subsequent repair and maintenance.

[0038] Furthermore, in this embodiment, a third connection hole 23 is provided on the pre-fixing plate 2, and the stacking tooling further includes a second connecting member. It can be foreseen that corresponding fourth connection holes are provided on the battery box body. After the plurality of single cells 1 are fixedly installed on the pre-fixing plate 2, one end of the second connecting member penetrates through the third connection hole 23 and then is connected to the fourth connection hole on the battery box body, thereby realizing the installation of the plurality of single cells 1 in the battery box body, making the assembly of the CTP battery pack simpler and more convenient, and further improving the production efficiency.

[0039] Conversely, when disassembling the pre-fixing plate 2 from the battery box body, by separating the second connecting member from the fourth connection hole on the battery box body, the pre-fixing plate 2 can be disassembled from the battery box body, making the disassembly of the single cell 1 simpler and more convenient, and reducing the cost of subsequent repair and maintenance.

[0040] Specifically, in this embodiment, the plurality of first connection holes 21 and the second connection holes 11 provided on the pre-fixing plate 2 are both through holes, the second connection holes 11 provided on the single cell 1, and the fourth connection holes provided on the battery box body are all threaded holes, and the first connecting member and the second connecting member both include bolts 3.

[0041] When installing the plurality of single cells 1 in the battery box body, first, one end of the bolt 3 penetrates through the through hole on the pre-fixing plate 2 and then is screwed to the threaded hole on the corresponding single cell 1 to fixedly install the single cell 1 on the pre-fixing plate 2; repeating this step, the plurality of single cells 1 are arranged in an array on the pre-fixing plate 2; then, one end of the bolt 3 penetrates through the through hole on the pre-fixing plate 2 and then is screwed to the threaded hole on the battery box body, thereby realizing the installation of the plurality of single cells 1 in the battery box body and completing the orderly stacking of the plurality of single cells 1 in the battery box body.

[0042] When disassembling the single battery cell 1 in the battery box, first screw out the bolt 3 from the threaded hole on the battery box, remove the pre-fixed plate 2 from the battery box, then move the pre-fixed plate 2 out of the battery box, and then screw out the bolt 3 from the threaded hole of the corresponding single battery cell 1, and remove the single battery cell 1 from the pre-fixed plate 2, so as to repair and maintain the corresponding single battery cell 1.

[0043] In this embodiment, the first connecting member further includes a flexible pad 4. The flexible pad 4 is sleeved on the bolt 3. When fixing multiple single battery cells 1 on the pre-fixed plate 2, one end of the bolt 3 penetrates through the through hole on the pre-fixed plate 2 and is screwed into the threaded hole of the corresponding single battery cell 1 until the nut of the bolt 3 presses the flexible pad 4 tightly on the back of the pre-fixed plate 2, thus completing the installation of the single battery cell 1 on the pre-fixed plate 2.

[0044] Through the arrangement of the flexible pad 4, on the one hand, when one end of the bolt 3 penetrates through the through hole on the pre-fixed plate 2 and is screwed into the threaded hole of the corresponding single battery cell 1, due to the deformation ability of the flexible pad 4, the bolt 3 can be further screwed tightly with the threaded hole of the single battery cell 1, so as to better fix the single battery cell 1 on the pre-fixed plate 2 and enhance the stability of the installation of the single battery cell 1.

[0045] On the other hand, when one end of the bolt 3 penetrates through the through hole on the pre-fixed plate 2 and is screwed into the threaded hole of the corresponding single battery cell 1, the flexible pad 4 is arranged between the nut of the bolt 3 and the pre-fixed plate 2, making the contact between the bolt 3 and the pre-fixed plate 2 a flexible contact, so as to prevent the nut from damaging the pre-fixed plate 2 when the bolt 3 is tightened and affecting the service life of the pre-fixed plate 2.

[0046] In this embodiment, the pre-fixed plate 2 is provided with a plurality of limiting grooves 22, and the plurality of limiting grooves 22 are arranged in an array on the pre-fixed plate 2 and correspond to the plurality of single battery cells 1 one by one. A plurality of first connecting holes 21 are respectively arranged at the bottoms of the plurality of limiting grooves 22, and a second connecting hole 11 is arranged at the bottom of the single battery cell 1. The outer contour of the limiting groove 22 is adapted to the outer contour of the bottom of the single battery cell 1, so that the single battery cell 1 can be inserted into the limiting groove 22, and the single battery cell 1 is limited by the limiting groove 22.

[0047] In the previous embodiment, it was mentioned that: the fixation of the single battery cell 1 on the pre-fixed plate 2 is achieved by connecting one end of the first connecting member through the first connecting hole 21 on the pre-fixed plate 2 to the second connecting hole 11 on the single battery cell 1. Therefore, it can be foreseen that: when fixing the single battery cell 1 on the pre-fixed plate 2, the central axes of the second connecting hole 11 on the single battery cell 1 and the corresponding first connecting hole 21 on the pre-fixed plate 2 should be made to coincide first.

[0048] In actual operation, it is difficult to align the second connection hole 11 on the single battery cell 1 with the corresponding first connection hole 21 through blind operation. Moreover, when fixing multiple single battery cells 1 on the pre-fixing plate 2, it is necessary to repeatedly align the second connection hole 11 on the single battery cell 1 with the first connection hole 21, resulting in difficult fixation of multiple single battery cells 1 on the pre-fixing plate 2 and reducing production efficiency.

[0049] Therefore, in this application, the pre-fixing plate 2 is provided with a plurality of limiting grooves 22 corresponding one by one to the multiple single battery cells 1, and the outer contour of the limiting groove 22 is adapted to the outer contour of the bottom of the single battery cell 1. When fixing the single battery cell 1 on the pre-fixing plate 2, the single battery cell 1 can be first inserted into the corresponding limiting groove 22, and the limiting groove 22 limits the single battery cell 1. At this time, the first connection hole 21 at the bottom of the limiting groove 22 just coincides with the central axis of the second connection hole 11 at the bottom of the single battery cell 1. Then, after one end of the bolt 3 passes through the first connection hole 21, it is connected to the second connection hole 11, so that the fixed installation of multiple single battery cells 1 on the pre-fixing plate 2 is simpler and greatly improves production efficiency.

[0050] In this embodiment, a flared opening 221 is provided at the top of the limiting groove 22, and the single battery cell 1 enters the limiting groove 22 from the flared opening 221. Since in this application, the pre-fixing plate 2 is provided with a plurality of limiting grooves 22 corresponding one by one to the multiple single battery cells 1 to limit the single battery cell 1 through the limiting grooves 22. On the one hand, when one end of the first connecting member passes through the first connection hole 21 on the pre-fixing plate 2 and is connected to the second connection hole 11 of the corresponding single battery cell 1, it can prevent the single battery cell 1 from moving randomly, so that the first connecting member is smoothly connected to the second connection hole 11 and production efficiency is improved.

[0051] On the other hand, it is through the outer contour of the limiting groove 22 being adapted to the outer contour of the bottom of the single battery cell 1, so that the first connection hole 21 at the bottom of the limiting groove 22 just coincides with the central axis of the second connection hole 11 at the bottom of the single battery cell 1, thus eliminating the need for the alignment operation of the second connection hole 11 and the first connection hole 21 and further improving production efficiency.

[0052] If the outer contour of the limiting groove 22 is exactly adapted to the outer contour of the bottom of the single battery cell 1, it will be difficult to insert the bottom of the single battery cell 1 into the limiting groove 22, thus affecting production efficiency; while if the outer contour of the limiting groove 22 is not exactly adapted to the outer contour of the bottom of the single battery cell 1, it will affect the alignment accuracy of the second connection hole 11 and the first connection hole 21.

[0053] Therefore, in the present application, a flared opening 221 that spreads outwards is provided at the top of the limiting groove 22. Through the flared opening 221, it is easier to insert the bottom of the single cell 1 into the limiting groove 22 from the top of the limiting groove 22. Thus, while ensuring that the outer contour of the limiting groove 22 just fits the outer contour of the bottom of the single cell 1, it is convenient to insert the bottom of the single cell 1 into the limiting groove 22, which not only ensures the alignment accuracy between the second connection hole 11 and the first connection hole 21, but also improves the production efficiency.

[0054] In this embodiment, the stacking tooling further includes a liquid cooling system 5 provided in the pre-fixing plate 2. The liquid cooling system 5 is used to dissipate heat from the single cell 1. Since a large amount of heat is generated when the single cell 1 is charging and discharging, if the heat is not dissipated in time, it will cause thermal runaway or even fire and explosion of the CTP battery pack. Therefore, in order to ensure the safety performance of the CTP battery pack, a heat dissipation system for dissipating heat from the single cell 1 is usually provided in the CTP battery pack.

[0055] In the present application, the stacking tooling further includes a liquid cooling system 5, and the liquid cooling system 5 is provided in the pre-fixing plate 2. When a plurality of single cells 1 are installed in the battery box through the pre-fixing plate 2, the liquid cooling system 5 provided in the pre-fixing plate 2 can dissipate heat from the plurality of single cells 1, thereby preventing thermal runaway of the CTP battery pack and ensuring the safety performance of the CTP battery pack.

[0056] Therefore, in the present application, the pre-fixing plate 2 not only plays a role in pre-fixing a plurality of single cells 1, making the installation of the plurality of single cells 1 in the battery box more convenient and fast, and improving the production efficiency, but also plays a role in dissipating heat from the plurality of single cells 1 after the plurality of single cells 1 are installed in the battery box, ensuring the safety performance of the CTP battery pack, thereby making the practicality of this stacking tooling stronger.

[0057] Specifically, in this embodiment, the liquid cooling system 5 includes a liquid cooling channel, a liquid inlet joint 51, and a liquid drain joint 55. The liquid cooling channel is provided in the pre-fixing plate 2. The liquid inlet joint 51 is provided at one end of the pre-fixing plate 2, and the liquid drain joint 55 is provided at the other end of the pre-fixing plate 2. And both ends of the liquid cooling channel are respectively communicated with the liquid inlet joint 51 and the liquid drain joint 55. By connecting the liquid inlet joint 51 with a liquid supply pipe, the liquid supply pipe sends coolant into the liquid cooling channel; when the coolant flows through the liquid cooling channel, it takes away the heat generated by the plurality of single cells 1 on the pre-fixing plate 2; the liquid drain joint 55 is connected with a liquid drain pipe, so that the coolant flowing through the liquid cooling channel is discharged through the liquid drain joint 55, thereby realizing the heat dissipation of the plurality of single cells 1 and ensuring the safety performance of the CTP battery pack.

[0058] Furthermore, in the present embodiment, the liquid cooling channel includes an inlet channel 52 communicating with the inlet connector 51, a drain channel 54 communicating with the drain connector 55, and a plurality of heat dissipation channels 53 with two ends respectively communicating with the inlet channel 52 and the drain channel 54. The plurality of heat dissipation channels 53 are respectively distributed between multiple rows of the limit slots 22. Since in the present application, when the plurality of single cells 1 are respectively fixed on the pre-fixing plate 2 through a plurality of first connectors, they are arranged in an array on the pre-fixing plate 2.

[0059] Therefore, in the present application, the liquid cooling channel includes an inlet channel 52, a drain channel 54 and a plurality of heat dissipation channels 53. The inlet channel 52 communicates with the inlet connector 51, enabling the liquid delivery pipe to convey the coolant to the inlet channel 52 through the inlet connector 51. The plurality of heat dissipation channels 53 are respectively distributed between adjacent rows of the limit slots 22, and one ends of the plurality of heat dissipation channels 53 are simultaneously communicated with the inlet channel 52, enabling the coolant in the inlet channel 52 to flow through the plurality of heat dissipation channels 53 respectively. Thus, when the coolant flows through the heat dissipation channels 53, it dissipates heat from the single cells 1 located on both sides of the heat dissipation channels 53.

[0060] The other ends of the plurality of heat dissipation channels 53 are simultaneously communicated with the drain channel 54. The coolant flowing through the plurality of heat dissipation channels 53 flows towards the drain channel 54 and is discharged through the drain connector 55. Thus, the present liquid cooling system 5 can simultaneously dissipate heat from the plurality of single cells 1 arranged in an array on the pre-fixing plate 2, enhancing the heat dissipation effect of the present liquid cooling system 5, and further making the present stacking tooling more practical.

[0061] The content described above can be implemented alone or in various combinations, and these variant ways are all within the protection scope of the present utility model.

[0062] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A CTP battery cell stacking tool, characterized in that: The invention comprises a plurality of single battery cells (1), a pre-fixing plate (2) for stacking the plurality of single battery cells (1), and a plurality of first connecting members for respectively connecting the plurality of single battery cells (1) to the pre-fixing plate (2); the plurality of single battery cells (1) are arranged in an array on the pre-fixing plate (2), the plurality of first connecting members respectively detachably connect the plurality of single battery cells (1) to the pre-fixing plate (2), and the pre-fixing plate (2) is detachably connected to a battery box.

2. A CTP battery cell stacking tool as claimed in claim 1, characterized in that: The pre-fixing plate (2) is provided with a plurality of first connection holes (21), the single battery cell (1) is provided with a second connection hole (11), and after a first connection member passes through a first connection hole (21), it is detachably connected to the second connection hole (11).

3. A CTP battery cell stacking tool as claimed in claim 2, characterized in that: The first connecting hole (21) is a through hole, the second connecting hole (11) is a threaded hole, and the first connecting member comprises a bolt (3), one end of the bolt (3) passing through the through hole and then being threadedly connected to the threaded hole.

4. A CTP battery cell stacking tool as claimed in claim 3, characterized in that: The first connecting member further comprises a flexible pad (4) sleeved on the bolt (3); when one end of the bolt (3) passes through the through hole and is screwed to the threaded hole, the flexible pad (4) abuts against the pre-fixing plate (2).

5. A CTP battery cell stacking tool as claimed in claim 2, characterized in that: The pre-fixing plate (2) is provided with a plurality of limiting grooves (22) for limiting the plurality of single battery cells (1) respectively; the plurality of limiting grooves (22) are distributed in an array on the pre-fixing plate (2); the plurality of first connection holes (21) are respectively provided at the bottom of the plurality of limiting grooves (22); the second connection holes (11) are provided at the bottom of the single battery cell (1); and the outer contours of the plurality of limiting grooves (22) are respectively adapted to the outer contours of the bottoms of the plurality of single battery cells (1).

6. A CTP battery cell stacking tool as claimed in claim 5, characterized in that: The top of the limiting groove (22) is provided with a bell mouth (221), and the single battery cell (1) enters the limiting groove (22) from the bell mouth (221).

7. A CTP battery cell stacking tool as claimed in claim 5, characterized in that: The stacking tool further comprises a liquid cooling system (5) arranged in the pre-fixing plate (2), the liquid cooling system (5) being used to dissipate heat from the single battery core (1).

8. A CTP battery cell stacking tool as claimed in claim 7, characterized in that: The liquid cooling system (5) comprises a liquid cooling channel provided in the pre-fixed plate (2), a liquid inlet joint (51) for connecting to a liquid supply pipe, and a liquid discharge joint (55) for connecting to a liquid discharge pipe, wherein two ends of the liquid cooling channel are respectively connected to the liquid inlet joint (51) and the liquid discharge joint (55).

9. A CTP battery cell stacking tool as claimed in claim 8, characterized in that: The liquid cooling channel comprises a liquid inlet channel (52) connected to the liquid inlet joint (51), a liquid discharge channel (54) connected to the liquid discharge joint (55), and a plurality of heat dissipation channels (53) respectively connected to the liquid inlet channel (52) and the liquid discharge channel (54) at two ends, wherein the plurality of heat dissipation channels (53) are respectively distributed between the plurality of rows of the limiting grooves (22).

10. A CTP battery cell stacking tool as claimed in claim 1, characterized in that: The pre-fixing plate (2) is provided with a third connection hole (23), and the stacking tool further comprises a second connection piece, one end of which passes through the third connection hole (23) and is detachably connected to the battery box.

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