Battery welding pressing block and battery welding equipment

Abstract

The utility model relates to a battery welding pressing block and battery welding equipment. A pressing part in the pressing block is used for abutting against a conducting bar, so that the conducting bar is pressed on a battery cell pole; the heat dissipation part is arranged on the pressing part, the heat dissipation part is provided with a first channel, and the first channel is used for transmitting cooling liquid so as to cool and dissipate heat of the pressing part, so that when the conducting bar and the cell pole of the battery module are welded, the conducting bar and the cell pole are pressed, and the conducting bar and the cell pole are tightly connected after welding. According to the battery module, the pressing part abuts against the conducting bar of the battery module, then the conducting bar and the battery cell pole column are pressed, the heat dissipation part is arranged on the pressing part, the first channel used for conveying the cooling liquid is formed in the heat dissipation part, the cooling liquid can flow smoothly, cooling and heat dissipation of the pressing part are achieved, the temperature of the pressing part is reduced, and the service life of the battery module is prolonged. And the welding slag adhesion can be effectively prevented, the heat dissipation capability is improved, the service life is prolonged, and the protection effect on the conducting bar welding of the battery module is achieved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery welding block and a battery welding device. Background Art

[0002] When welding the conductive bar and the cell pole of the battery module, it is usually necessary to use a pressing block to press the conductive bar and the cell pole tightly. After welding, the conductive bar and the cell pole are tightly connected to ensure the overcurrent capacity. As the cell capacity becomes larger and larger, the overcurrent demand increases significantly, and the conductive bar is made thicker and thicker. When welding the conductive bar and the cell pole, a larger welding energy needs to be input, which increases the heat diffusion of the conductive bar to the pressing block.

[0003] Existing compacts usually use natural heat dissipation or air cooling, which has poor heat dissipation capacity. When used continuously, high temperature is easily accumulated, causing the compact to burn out. The accumulated high temperature can also cause damage such as short circuit to the contacted battery cells. Utility Model Content

[0004] Based on this, it is necessary to provide a battery welding press block and battery welding equipment that can improve heat dissipation capacity, extend service life, and protect battery cell welding in order to address the problems existing in the above-mentioned existing battery press blocks.

[0005] In a first aspect, the present application provides a battery welding block, comprising:

[0006] A pressing part, which is used to abut against the conductive bar so that the conductive bar is pressed against the battery cell pole;

[0007] The heat dissipation part is arranged on the pressing part, and the heat dissipation part is provided with a first channel, and the first channel is used to transmit cooling liquid to cool and dissipate heat of the pressing part.

[0008] In one of the embodiments, the heat dissipation portion is provided with a first joint and a second joint;

[0009] The first joint is connected to the first end of the first channel, and the second joint is connected to the second end of the first channel.

[0010] In one embodiment, the first channel includes a plurality of first sub-channels;

[0011] The first end of each first sub-channel is connected to the first joint, and the second end of each first sub-channel is connected to the second joint.

[0012] In one embodiment, the first subchannel includes a plurality of branch channels;

[0013] The branch channels in the same first sub-channel are connected in sequence.

[0014] In one of the embodiments, at least one first through hole is provided between two adjacent branch channels, and the first through hole is communicated with the corresponding two adjacent branch channels; a sealing member is provided in the first through hole.

[0015] In one embodiment, the heat dissipation portion is disposed around the periphery of the pressing portion, and the first channel is disposed around the periphery of the pressing portion.

[0016] In one of the embodiments, the pressing portion is provided with a first pressing end and a second pressing end, the first pressing end is used to abut against the corresponding conductive bar, and the second pressing end is used to abut against the corresponding conductive bar.

[0017] In one embodiment, the size of the first pressing end is smaller than that of the second pressing end; and the first pressing end is connected to the second pressing end.

[0018] In one of the embodiments, the heat dissipation portion is provided with a mounting area, and the mounting area is used to connect the welding device.

[0019] In a second aspect, the present application provides a battery welding device, including a welding device and a battery welding pressing block as described above;

[0020] The battery welding block is arranged on the welding device.

[0021] One of the above technical solutions has the following advantages and beneficial effects:

[0022] The above-mentioned battery welding block includes a clamping part and a heat dissipation part. The clamping part is used to abut against the conductive bar so that the conductive bar is pressed against the battery cell pole. The heat dissipation part is arranged on the clamping part, and the heat dissipation part is provided with a first channel. The first channel is used to transmit coolant to cool and dissipate heat from the clamping part, so as to realize that when welding between the conductive bar and the battery cell pole of the battery module, the conductive bar and the battery cell pole are compressed, so that the conductive bar and the battery cell pole are tightly connected after welding. The present application can realize the compression between the conductive bar and the battery cell pole by abutting the conductive bar of the battery module with the clamping part. By arranging the heat dissipation part on the clamping part and arranging the first channel for transmitting the coolant on the heat dissipation part, the coolant can flow smoothly, realize cooling and dissipating heat from the clamping part, reduce the temperature of the clamping part, can effectively prevent welding slag from sticking, improve the heat dissipation capacity, extend the service life, and protect the welding of the conductive bar of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the battery welding block from the first perspective in the embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of the structure of the battery welding block from a second perspective in an embodiment of the present application;

[0025] Figure 3 This is a schematic diagram of the cross-sectional structure of a battery welding block in an embodiment of the present application;

[0026] Figure 4 This is a schematic diagram of the assembly decomposition structure of the battery welding block in the embodiment of the present application;

[0027] Figure 5 It is a schematic diagram of the assembly cross-sectional structure of the battery welding block in the embodiment of the present application.

[0028] Reference numerals:

[0029] 10. Clamping portion; 110. First clamping end; 120. Second clamping end; 20. Heat dissipation portion; 210. First channel; 212. First sub-channel; 214. Branch channel; 216. First through hole; 220. First joint; 230. Second joint; 240. Installation area; 30. Sealing member; 40. Conductive bar; 50. Cell pole. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover inclusions that are not listed. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0033] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0034] In addition, the term "plurality" shall mean two or more.

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] In one embodiment, Figure 1 , Figure 3 and Figure 4 As shown, a battery welding block is provided, including a clamping portion 10 and a heat dissipation portion 20, the clamping portion 10 is used to abut against the conductive bar 40 so that the conductive bar 40 is pressed on the battery cell pole 50; the heat dissipation portion 20 is arranged on the clamping portion 10, and the heat dissipation portion 20 is provided with a first channel 210, and the first channel 210 is used to transmit coolant to cool and dissipate the heat of the clamping portion 10.

[0037] Among them, the battery module may include a plurality of single cells, and each single cell may be connected in series and / or in parallel. The single cell may be a lithium-ion cell, and the shape of the single cell may be, but is not limited to, a square, and a cell pole 50 is provided on the single cell, and the cell pole 50 may include a positive pole and a negative pole. For example, a positive pole and a negative pole are provided on the top surface of the single cell. The battery module may also include a conductive bar 40, which is used to connect the cell pole 50 of the single cell to transmit electrical signals to the single cell. In order to improve the overcurrent capacity of the conductive bar 40, the conductive bar 40 may be made of copper or aluminum. For example, the first end of the conductive bar 40 can be used to connect the negative pole of one of the two adjacent single cells, and the second end of the conductive bar 40 can be used to connect the positive pole of the other of the two adjacent single cells, thereby realizing the series connection of the two adjacent single cells. For another example, the first end of the conductive bar 40 can be used to connect to the positive electrode of one of two adjacent single cells, and the second end of the conductive bar 40 can be used to connect to the positive electrode of the other of the two adjacent single cells, thereby achieving parallel connection of the two adjacent single cells.

[0038] The clamping part 10 may be, but is not limited to, a clamping part 10 made of copper or aluminum, and the clamping part 10 may be, but is not limited to, an annular clamping part 10. For example, the conductive bar 40 has a first surface and a second surface, the first surface of the conductive bar 40 is opposite to the second surface, the second surface of the conductive bar 40 is arranged on the battery cell pole 50, the first surface of the conductive bar 40 is provided with a welding area, the clamping part 10 may be arranged around the periphery of the welding area of ​​the conductive bar 40, and there is a certain gap between the clamping part 10 and the welding area, thereby clamping the conductive bar 40 on the battery cell pole 50, and at the same time, it can avoid the clamping part 10 from contacting the welding area of ​​the conductive bar 40, and avoid welding slag adhesion to the clamping part 10 when welding the conductive bar 40 and the battery cell pole 50. Exemplarily, the conductive bar 40 and the battery cell pole 50 can be welded by laser welding.

[0039] The heat dissipation part 20 can be, but is not limited to, a heat dissipation plate made of copper or aluminum. The heat dissipation part 20 can be arranged on the clamping part 10 by bonding or welding. In another example, the heat dissipation part 20 and the clamping part 10 can also be an integrally formed structure. Exemplarily, the clamping part 10 is a sleeve-shaped structure, and the heat dissipation part 20 can be sleeved and arranged on the periphery of the clamping part 10. A first channel 210 is arranged in the heat dissipation part 20, and the first channel 210 is used to transmit coolant. The coolant flows through the first channel 210 to cool the heat dissipation part 20. Based on the close arrangement of the heat dissipation part 20 and the clamping part 10, heat exchange between the heat dissipation part 20 and the clamping part 10 is achieved, thereby cooling and dissipating the heat of the clamping part 10.

[0040] Exemplarily, when the conductive bar 40 of the battery module is welded to the battery cell pole 50, the conductive bar 40 is arranged on the battery cell pole 50, and the pressing part 10 abuts against the conductive bar 40 to apply pressure to the conductive bar 40, thereby pressing the conductive bar 40 and the battery cell pole 50, and welding the pressed conductive bar 40 and the battery cell pole 50 to achieve a firm welding of the conductive bar 40 and the battery cell pole 50; in addition, before welding the conductive bar 40 and the battery cell pole 50, coolant is transmitted to the first channel 210 of the heat dissipation part 20, so that the coolant circulates in the first channel 210, thereby achieving heat exchange between the heat dissipation part 20 and the pressing part 10, achieving cooling and heat dissipation of the pressing part 10, thereby reducing the temperature of the pressing part 10, avoiding the pressing part 10 from burning due to untimely heat dissipation, and avoiding the high temperature accumulated in the pressing part 10 from causing irreversible damage to the corresponding single battery cell.

[0041] In the above-mentioned embodiment, the clamping portion 10 is used to abut the conductive bar 40 so that the conductive bar 40 is pressed against the battery cell pole 50; the heat dissipation portion 20 is arranged on the clamping portion 10, and the heat dissipation portion 20 is provided with a first channel 210, and the first channel 210 is used to transmit coolant to cool and dissipate the heat of the clamping portion 10, so as to realize that when welding between the conductive bar 40 and the battery cell pole 50 of the battery module, the conductive bar 40 and the battery cell pole 50 are clamped, so that the conductive bar 40 and the battery cell pole 50 are tightly connected after welding. The present application achieves compression between the conductive bar 40 and the battery cell pole 50 by abutting the clamping portion 10 against the conductive bar 40 of the battery module. The heat dissipation portion 20 is provided on the clamping portion 10, and the first channel 210 for transmitting the coolant is provided on the heat dissipation portion 20, so that the coolant can flow smoothly, thereby cooling and dissipating the clamping portion 10, reducing the temperature of the clamping portion 10, effectively preventing welding slag from sticking, improving the heat dissipation capacity, extending the service life, and protecting the welding of the conductive bar 40 of the battery module.

[0042] In one embodiment, Figure 1 and Figure 2 As shown, the heat dissipation portion 20 is provided with a first joint 220 and a second joint 230 ; the first joint 220 is connected to the first end of the first channel 210 , and the second joint 230 is connected to the second end of the first channel 210 .

[0043] The first joint 220 may be a liquid inlet joint, the second joint 230 may be a liquid outlet structure, the first end of the first joint 220 may be arranged at the first end of the first channel 210 by screwing, clamping or welding; the first end of the second joint 230 may be arranged at the second end of the first channel 210 by screwing, clamping or welding. Exemplarily, a sealing ring may be arranged between the first joint 220 and the first end of the first channel 210, and then a sealing arrangement between the first joint 220 and the first end of the first channel 210; a sealing ring may be arranged between the second joint 230 and the second end of the first channel 210, and then a sealing arrangement between the second joint 230 and the second end of the first channel 210.

[0044] The second end of the first connector 220 is used to connect the first end of the liquid cooling module, and the second end of the second connector 230 is used to connect the second end of the liquid cooling module. For example, the first end of the liquid cooling module can be plugged into the second end of the first connector 220 through a corresponding pipe, and the second end of the liquid cooling module can be plugged into the second end of the second connector 230 through a corresponding pipe, and then the first end of the liquid cooling module can transmit the coolant to the first channel 210 of the heat dissipation part 20 through the first connector 220, and the coolant is transmitted back to the second end of the liquid cooling module through the second connector 230 after being transmitted through the first channel 210 of the heat dissipation part 20, and after the coolant is cooled by the liquid cooling module, it is output again from the first end of the liquid cooling module, so as to realize the circulation of the coolant to the first channel 210 of the heat dissipation part 20, and then continuously cool the heat dissipation part 20, thereby realizing continuous cooling and heat dissipation of the pressing part 10, effectively reducing the temperature of the pressing part 10, and effectively preventing the welding slag adhesion when the conductive bar 40 and the battery cell pole 50 are welded, thereby improving the heat dissipation capacity of the pressing part 10.

[0045] In one embodiment, Figure 3 As shown, the first channel 210 includes a plurality of first sub-channels 212 ; the first end of each first sub-channel 212 is connected to the first joint 220 , and the second end of each first sub-channel 212 is connected to the second joint 230 .

[0046] Among them, each first sub-channel 212 can be connected in parallel to form the first channel 210, and the diameter of the first sub-channel 212 can be but not limited to 6 mm. At least one first sub-channel 212 is arranged adjacent to one side wall of the pressing part 10, and at least one first sub-channel 212 is arranged adjacent to the other side wall of the pressing part 10, so that each first sub-channel 212 can be arranged around the periphery of the pressing part 10 to achieve heat exchange of the pressing part 10, thereby improving the heat dissipation efficiency of the pressing part 10 and quickly reducing the temperature of the pressing part 10. Exemplarily, the first channel 210 may include two first sub-channels 212, wherein one first sub-channel 212 is arranged adjacent to one side wall of the pressing part 10, and the other first sub-channel 212 is arranged adjacent to the other side wall of the pressing part 10, so as to achieve surrounding heat exchange of the pressing part 10.

[0047] By connecting each first sub-channel 212 between the first connector 220 and the second connector 230, the first connector 220 and the second connector 230 are plugged into the liquid cooling module, and the liquid cooling module can be plugged into the second connector 230 through the corresponding pipeline, and then the liquid cooling module can transmit the coolant to each first sub-channel 212 of the heat dissipation part 20 through the first connector 220. After the coolant is transmitted through each first sub-channel 212 of the heat dissipation part 20, it is returned to the liquid cooling module through the second connector 230, and after the coolant is received by the liquid cooling module, it is output from the liquid cooling module to each first sub-channel 212 again, so as to realize the circulation of the coolant to each first sub-channel 212 of the heat dissipation part 20, and then continuously cool the heat dissipation part 20, thereby realizing continuous cooling and heat dissipation of the pressing part 10, increasing the contact area between the coolant and the heat dissipation part 20, effectively reducing the temperature of the pressing part 10, and being able to effectively prevent the welding slag from adhering when the conductive bar 40 and the battery cell pole 50 are welded, thereby improving the heat dissipation capacity of the pressing part 10.

[0048] In one embodiment, Figure 3 As shown, the first sub-channel 212 includes a plurality of branch channels 214; the branch channels 214 in the same first sub-channel 212 are connected in sequence.

[0049] The straight line of the branch channel 214 may be 6 mm, and the branch channel 214 may be, but is not limited to, a linear channel.

[0050] Exemplarily, the first channel 210 includes two first sub-channels 212, and the first sub-channel 212 includes two branch channels 214, wherein one first sub-channel 212 is arranged adjacent to one side wall of the pressing portion 10, and the other first sub-channel 212 is arranged adjacent to the other side wall of the pressing portion 10, and the two branch channels 214 in the same first sub-channel 212 are connected in series between the first interface and the second interface, that is, each branch channel 214 is enclosed to form a ring structure, and when the conductive bar 40 of the battery module is welded to the battery cell pole 50, the pressing portion 10 is abutted against the conductive bar 40 to weld the conductive bar 40. Pressure is applied to the busbar 40, and coolant is transmitted to the first channel 210 of the heat dissipation part 20 to weld the busbar 40 and the cell pole 50. Then, the coolant is simultaneously transmitted to the branch channels 214 of each first sub-channel 212 to achieve parallel transmission of the coolant around the clamping part 10. Then, heat exchange is performed between the heat dissipation part 20 and the clamping part 10 to achieve cooling and heat dissipation of the clamping part 10, so that the temperature of the clamping part 10 can be quickly reduced to avoid burning of the clamping part 10 due to untimely heat dissipation, and at the same time, the high temperature accumulated in the clamping part 10 can be prevented from causing irreversible damage to the corresponding single cell.

[0051] In one embodiment, Figure 1 and Figure 3As shown, at least one first through hole 216 is disposed between two adjacent branch channels 214 , and the first through hole 216 is communicated with the corresponding two adjacent branch channels 214 ; a sealing member 30 is disposed in the first through hole 216 .

[0052] For example, the first channel 210 includes two first sub-channels 212, one first sub-channel 212 includes a first branch channel 214 and a second branch channel 214, and the other first sub-channel 212 includes a third branch channel 214 and a fourth branch channel 214. The first end of the first branch channel 214 is connected to the first joint 220, the second end of the first branch channel 214 is connected to the first end of the second branch channel 214, and the second end of the second branch channel 214 is connected to the second joint 230; the first end of the third branch channel 214 is connected to the first joint 220, the second end of the third branch channel 214 is connected to the first end of the fourth branch channel 214, and the second end of the fourth branch channel 214 is connected to the second joint 230; the first end of the first branch channel 214 is connected to the first end of the third branch channel 214, and the second end of the second branch channel 214 is connected to the second end of the fourth branch channel 214. A third branch channel 214 may be provided at the first end of the first branch channel 214 and / or the second end of the first branch channel 214. A through hole 216 can be provided, and deep hole processing can be performed on the corresponding first through hole 216 through processing equipment, so as to form a first branch channel 214 on the heat dissipation portion 20; a first through hole 216 can be provided at the first end of the second branch channel 214 and / or the second end of the second branch channel 214, and deep hole processing can be performed on the corresponding first through hole 216 through processing equipment, so as to form a second branch channel 214 on the heat dissipation portion 20; a first through hole 216 can be provided at the first end of the third branch channel 214 and / or the second end of the third branch channel 214, and deep hole processing can be performed on the corresponding first through hole 216 through processing equipment, so as to form a third branch channel 214 on the heat dissipation portion 20; a first through hole 216 can be provided at the first end of the fourth branch channel 214 and / or the second end of the fourth branch channel 214, and deep hole processing can be performed on the corresponding first through hole 216 through processing equipment, so as to form a fourth branch channel 214 on the heat dissipation portion 20. After the deep hole processing of the corresponding channel is completed, the corresponding first through hole 216 can be sealed by the sealing member 30 to prevent the coolant from leaking from the first through hole 216. Exemplarily, the sealing member 30 can be but not limited to a metal ball, for example, the sealing member 30 can be a steel ball, and the steel ball can be riveted to the corresponding first through hole 216, thereby simplifying the molding process of the first channel 210 of the heat dissipation portion 20.

[0053] In one embodiment, Figure 2 and Figure 3 As shown, the heat dissipation portion 20 is disposed around the periphery of the pressing portion 10 , and the first channel 210 is disposed around the periphery of the pressing portion 10 .

[0054] The heat dissipation part 20 can be arranged around the periphery of the pressing part 10 by integral molding or bonding to increase the contact area between the heat dissipation part 20 and the pressing part 10, thereby improving the heat exchange efficiency of the heat dissipation part 20 to the pressing part 10.

[0055] Exemplarily, the first connector 220 and the second connector 230 may be adjacently arranged on the heat dissipation portion 20, the first end of the first channel 210 is connected to the first connector 220, the second end of the first channel 210 is connected to the second connector 230, the first channel 210 is arranged around the periphery of the clamping portion 10, and then the conductive bar 40 and the battery cell pole 50 are welded, the coolant enters the first channel 210 through the first interface, and is output through the second interface, so that the coolant is transmitted serially around the clamping portion 10, and heat exchange is performed between the heat dissipation portion 20 and the clamping portion 10, so as to realize cooling and heat dissipation of the clamping portion 10.

[0056] In another example, the first connector 220 and the second connector 230 may be relatively arranged on the heat dissipation part 20, the first end of the first channel 210 is connected to the first connector 220, and the second end of the first channel 210 is connected to the second connector 230. The first channel 210 may be divided into a plurality of first sub-channels 212, and the corresponding first sub-channels 212 are arranged around the periphery of the clamping part 10 to weld the conductive bar 40 and the battery cell pole 50. The coolant enters the first channel 210 through the first interface and is output through the second interface, thereby realizing the parallel transmission of the coolant around the clamping part 10, and heat exchange is performed between the heat dissipation part 20 and the clamping part 10, thereby improving the cooling and heat dissipation efficiency of the clamping part 10.

[0057] In one embodiment, Figure 1 and Figure 5 As shown, the pressing portion 10 is provided with a first pressing end 110 and a second pressing end 120 , the first pressing end 110 is used to abut against the corresponding conductive bar 40 , and the second pressing end 120 is used to abut against the corresponding conductive bar 40 .

[0058] The clamping part 10 may be a sleeve-shaped structure, the first clamping end and the second clamping end of the clamping part are opposite, the first clamping end 110 may be but not limited to a circular structure, and the second clamping end 120 may be but not limited to a circular structure. Exemplarily, when welding the conductive bar 40 and the battery cell pole 50 of the battery module, the conductive bar 40 is arranged on the battery cell pole 50, and the first clamping end 110 of the clamping part 10 abuts against the conductive bar 40 to apply pressure to the conductive bar 40, thereby pressing the conductive bar 40 and the battery cell pole 50, and welding the compressed conductive bar 40 and the battery cell pole 50, thereby achieving a firm welding of the conductive bar 40 and the battery cell pole 50. In another example, when the conductive bar 40 of the battery module is welded to the battery cell pole 50, the conductive bar 40 is arranged on the battery cell pole 50, and the second clamping end 120 of the clamping portion 10 can also abut against the conductive bar 40 to apply pressure to the conductive bar 40, thereby clamping the conductive bar 40 and the battery cell pole 50. By providing the first clamping end 110 and the second clamping end 120 on the clamping portion 10, the corresponding clamping port can be selected according to the battery module to clamp the conductive bar 40, thereby improving the versatility of the clamping block.

[0059] In one embodiment, the size of the first pressing end 110 is smaller than the size of the second pressing end 120 ; the first pressing end 110 is communicated with the second pressing end 120 .

[0060] Among them, the clamping part 10 can be a hollow through structure, and the first clamping end 110 is connected to the second clamping end 120. The size of the first clamping end 110 of the clamping part 10 can be determined according to the size of the welding area of ​​the conductive bar 40. By setting the first clamping end 110 and the second clamping end 120 of different sizes, when welding the conductive bar 40 and the battery cell pole 50 of the battery module, the clamping port of the corresponding size (such as the first clamping end 110 or the second clamping end 120) can be selected according to the size of the welding area of ​​the conductive bar 40. The selected clamping port is abutted on the conductive bar 40 to apply pressure to the conductive bar 40, so that the conductive bar 40 and the battery cell pole 50 are compressed, thereby improving the versatility of the pressing block.

[0061] In one embodiment, Figure 1 As shown, the heat dissipation portion 20 is provided with a mounting area 240, and the mounting area 240 is used to connect a welding device.

[0062] The mounting area 240 is provided with a plurality of mounting holes, for example, the mounting area 240 may be provided with 4 mounting holes, and the mounting holes are arranged at intervals in the mounting area 240. The fasteners pass through the corresponding mounting holes on the mounting area 240 and are locked and fixed on the welding device to achieve the installation and fixing of the heat dissipation part 20 on the welding device, and then the welding device can be controlled to achieve the movement of the heat dissipation part 20, that is, to drive the pressing part 10 to abut against the conductive bar 40, so as to apply pressure to the conductive bar 40, thereby pressing the conductive bar 40 and the battery cell pole 50, and welding the pressed conductive bar 40 and the battery cell pole 50.

[0063] In one embodiment, the present application provides a battery welding device, including a welding device and a battery welding press block as described above; the battery welding press block is arranged on the welding device.

[0064] For the specific description of the welding device and the battery welding block, reference may be made to the specific description of the welding device and the battery welding block in the above embodiments, which will not be repeated here.

[0065] The welding device may be a laser welding device. The battery welding block is arranged on the welding device, and the welding device can be used to drive the battery welding block and apply pressure to the battery welding block, so as to achieve compression between the conductive bar and the battery cell pole.

[0066] In the above embodiment, the pressing portion is abutted against the conductive bar of the battery module, so that the conductive bar and the battery cell pole can be pressed together. A heat dissipation portion is provided on the pressing portion, and a first channel for transmitting the coolant is provided on the heat dissipation portion, so that the coolant can flow smoothly, thereby cooling and dissipating the heat of the pressing portion, reducing the temperature of the pressing portion, effectively preventing welding slag from sticking, improving the heat dissipation capacity, extending the service life, and protecting the welding of the conductive bar of the battery module.

[0067] It should be noted that the battery welding equipment may also include components such as a display, and the specific battery welding equipment may include more components than those described in the above embodiments, or combine certain components, or have a different arrangement of components.

[0068] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A battery welding block, characterized in that: include: A pressing portion, the pressing portion is used to abut against the conductive bar so that the conductive bar is pressed against the battery cell pole; The heat dissipation part is arranged on the pressing part, and the heat dissipation part is provided with a first channel, and the first channel is used to transmit cooling liquid to cool and dissipate heat for the pressing part.

2. The battery welding block according to claim 1, characterized in that: The heat dissipation portion is provided with a first joint and a second joint; The first joint is connected to the first end of the first channel, and the second joint is connected to the second end of the first channel.

3. The battery welding block according to claim 2, characterized in that: The first channel includes a plurality of first sub-channels; The first end of each of the first sub-channels is connected to the first joint, and the second end of each of the first sub-channels is connected to the second joint.

4. The battery welding block according to claim 3, characterized in that: The first subchannel includes a plurality of branch channels; The branch channels in the same first sub-channel are connected in sequence.

5. The battery welding block according to claim 4, characterized in that: At least one first through hole is arranged between two adjacent branch channels, and the first through hole is communicated with the corresponding two adjacent branch channels; a sealing member is arranged in the first through hole.

6. The battery welding block according to claim 1, characterized in that: The heat dissipation portion is disposed around the periphery of the pressing portion, and the first channel is disposed around the periphery of the pressing portion.

7. The battery welding block according to claim 6, characterized in that: The pressing portion is provided with a first pressing end and a second pressing end, the first pressing end is used to abut against the corresponding conductive bar, and the second pressing end is used to abut against the corresponding conductive bar.

8. The battery welding block according to claim 7, characterized in that: The size of the first pressing end is smaller than that of the second pressing end; and the first pressing end is communicated with the second pressing end.

9. The battery welding block according to any one of claims 1 to 8, characterized in that: The heat dissipation portion is provided with an installation area, and the installation area is used to connect a welding device.

10. A battery welding device, characterized in that: It comprises a welding device and a battery welding block as claimed in any one of claims 1 to 9; The battery welding pressing block is arranged on the welding device.

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