Welding cooling device

Abstract

The utility model discloses a kind of welding cooling equipment, including first fixture and cooling circulation passage, first fixture is used to hold the shell of battery cell, shell and battery cell top cover are welded, first fixture includes front clamping seat and rear clamping seat, when first fixture holds shell, front clamping seat is in contact with the front end surface of shell, rear clamping seat is in contact with the back end surface of shell, first fixture is equipped with first through-hole and second through-hole;Cooling circulation passage is set in first fixture, first through-hole and second through-hole are respectively as the water inlet and water outlet of cooling circulation passage, and the distance between water inlet and battery cell top cover is less than the distance between water outlet and battery cell top cover.By setting cooling circulation passage in first fixture, when welding battery cell top cover and shell, continuously fill water to water inlet, heat generated by welding is conducted to first fixture through shell, water flow in first fixture carries away heat, and the heat dissipation of welding process is completed.

Description

Technical Field

[0001] This utility model relates to the field of welding auxiliary equipment, and in particular to a welding cooling device. Background Technology

[0002] With the development of the new energy sector, the safety of lithium batteries has become a major concern for consumers. Currently, battery cells typically consist of a cover, electrolyte, and casing. A rapid increase in internal pressure and temperature can cause the cell to catch fire and explode, posing a safety hazard in production and use.

[0003] To mitigate the aforementioned safety hazards, existing battery cell manufacturers install sensors on the cell's cover plate. These sensors monitor internal parameters in real time, allowing for proactive measures to reduce the likelihood of accidents. Due to production line or manufacturer requirements, the battery cell production process sometimes involves installing sensors on the cover plate first, followed by welding the sensor-equipped cover plate and the casing together.

[0004] However, existing welding methods typically use laser welding, which generates very high temperatures during the process. These high temperatures are conducted to the sensor through the housing and cover, exceeding the sensor's tolerance temperature and causing damage. Utility Model Content

[0005] The present invention provides a welding cooling device, which aims to solve the problem that the high temperature generated during the welding of the battery cell housing and the cover plate in the prior art will damage the sensor.

[0006] This utility model discloses a welding cooling device, comprising:

[0007] A first clamp is used to clamp the housing of a battery cell, the housing being welded to the top cover of the battery cell. The first clamp includes a front clamping seat and a rear clamping seat. When the first clamp clamps the housing, the front clamping seat contacts the front end face of the housing, and the rear clamping seat contacts the rear end face of the housing. The first clamp is provided with a first through hole and a second through hole.

[0008] A cooling circulation channel is provided inside the first fixture. The first through hole and the second through hole serve as the water inlet and water outlet of the cooling circulation channel, respectively. The distance between the water inlet and the top cover of the battery cell is less than the distance between the water outlet and the top cover of the battery cell.

[0009] In some embodiments, the welding cooling equipment further includes a cooling pipe assembly, which is connected to the cooling circulation channel through the first through hole and the second through hole on the first fixture, for filling and draining the cooling circulation channel with water.

[0010] In some embodiments, the housing further includes a left end face and a right end face disposed opposite to each other, the area of ​​the front end face being larger than the area of ​​the left end face and the area of ​​the right end face; the front clamping seat and the rear clamping seat also each include a front end face, a rear end face, a left end face and a right end face, the area of ​​the front clamping seat and the rear end face being larger than the area of ​​the left end face and the area of ​​the right end face of the front clamping seat and the rear clamping seat.

[0011] In some embodiments, the cooling circulation channel includes a front cooling channel disposed within the front clamp.

[0012] In some embodiments, the cooling pipe assembly includes a first cooling pipe and a second cooling pipe; the first cooling pipe is connected to the inlet of the front cooling channel, and the second cooling pipe is connected to the outlet of the front cooling channel.

[0013] In some embodiments, the cooling circulation channel further includes a rear cooling channel disposed within the rear clamp.

[0014] In some embodiments, the cooling pipe assembly further includes a third cooling pipe and a fourth cooling pipe; the third cooling pipe is connected to the inlet of the rear cooling channel, and the fourth cooling pipe is connected to the outlet of the rear cooling channel.

[0015] In some embodiments, the welding cooling device further includes a fixed plate and an adjusting rod; the fixed plate is disposed opposite to the front clamping seat and / or the rear clamping seat, the fixed plate is provided with a third through hole, the adjusting rod passes through the third through hole, and the adjusting rod has a moving state and a stationary state; the moving state is the state in which the adjusting rod moves back and forth relative to the fixed plate in the axial direction of the third through hole; the stationary state is the state in which the adjusting rod is stationary relative to the fixed plate; one end of the adjusting rod is fixedly connected to the front clamping seat and / or the rear clamping seat, so that the distance between the front clamping seat and the rear clamping seat is adjustable.

[0016] In some embodiments, the welding cooling device further includes a spring sleeved on the adjusting rod.

[0017] In some embodiments, the welding cooling device further includes a second clamp and a base. The second clamp includes a left clamp and a right clamp. When the housing is welded to the top cover of the battery cell, the left clamp and the right clamp clamp the housing from the left and right ends of the housing. The left clamp, the right clamp, and the fixing plate are all fixedly connected to the base.

[0018] The beneficial effects of this utility model are as follows: The welding cooling device disclosed in this utility model includes a first clamp and a cooling circulation channel. The first clamp is used to hold the housing of a battery cell, and the housing is welded to the top cover of the battery cell. The first clamp includes a front clamping seat and a rear clamping seat. When the first clamp holds the housing, the front clamping seat contacts the front end face of the housing, and the rear clamping seat contacts the rear end face of the housing. The first clamp is provided with a first through hole and a second through hole. The cooling circulation channel is disposed within the first clamp, and the first through hole and the second through hole serve as the inlet and outlet of the cooling circulation channel, respectively. The distance between the inlet and the top cover of the battery cell is less than the distance between the outlet and the top cover of the battery cell. By providing a cooling circulation channel within the first clamp, the front clamping seat and the rear clamping seat of the first clamp contact the front end face and the rear end face of the housing, respectively. During the welding of the cell top cover and the housing, water is continuously poured into the inlet and drained from the outlet, so that a continuous water flow is formed in the cooling circulation channel. Since the first clamp is in contact with the housing, the heat generated by welding can be conducted from the housing to the first clamp, and the heat is carried away by the water flow in the first clamp. This achieves the function of fixing the housing during the welding process of the cell top cover and the housing, while also completing heat dissipation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 An overall structural diagram of the welding cooling equipment provided in this embodiment of the utility model;

[0021] Figure 2 Exploded view of the welding cooling device provided in the embodiment of this utility model;

[0022] Figure 3 An exploded view of the front clamping seat in the welding cooling equipment provided in this embodiment of the utility model;

[0023] Figure 4 An exploded view of the rear clamping seat in the welding cooling equipment provided in this embodiment of the utility model.

[0024] Reference numerals: 1. First clamp; 11. Front clamp; 12. Rear clamp; 13. First through hole; 14. Second through hole; 2. Cooling circulation channel; 21. Front cooling channel; 22. Rear cooling channel; 3. Cooling pipe assembly; 31. First cooling pipe; 32. Second cooling pipe; 33. Third cooling pipe; 34. Fourth cooling pipe; 4. Fixing plate; 41. Third through hole; 5. Adjusting rod; 51. Limiting part; 6. Second clamp; 61. Left clamp; 62. Right clamp; 7. Base; A. Housing; B. Battery cell top cover; B1. Sensor setting area. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and, or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and, or collections thereof.

[0027] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0029] It should also be further understood that the terms "and" and "or" as used in this specification and the appended claims refer to any combination of one or more of the associated listed items and all possible combinations, and include such combinations.

[0030] like Figures 1 to 4 As shown, this utility model discloses a welding cooling device. Figure 1 An overall structural diagram of the welding cooling equipment provided in this embodiment of the utility model; Figure 2 Exploded view of the welding cooling device provided in the embodiment of this utility model; Figure 3 An exploded view of the front clamping seat in the welding cooling equipment provided in this embodiment of the utility model; Figure 4 This is an exploded view of the rear clamping seat in the welding cooling device provided in an embodiment of the present invention. The forward and backward arrows shown in the figures are directional descriptions of the front and rear faces described in the embodiments, and are not part of the structure.

[0031] This utility model discloses a welding cooling device, including a first clamp 1 and a cooling circulation channel 2. The first clamp 1 is used to clamp the housing A of the battery cell, the housing A being welded to the top cover B of the battery cell. The first clamp 1 includes a front clamping seat 11 and a rear clamping seat 12. When the first clamp 1 clamps the housing A, the front clamping seat 11 contacts the front end face of the housing A, and the rear clamping seat 12 contacts the rear end face of the housing A. The first clamp 1 is provided with a first through hole 13 and a second through hole 14.

[0032] Cooling circulation channel 2 is disposed in the first clamp 1. The first through hole 13 and the second through hole 14 serve as the water inlet and water outlet of the cooling circulation channel 2, respectively. The distance between the water inlet and the top cover B of the battery cell is less than the distance between the water outlet and the top cover B of the battery cell.

[0033] In this embodiment, the external structure of the battery cell is formed by welding a top cover B and a housing A. The interior of the housing A is used to store the electrolyte, and the housing A can be made of aluminum. Before welding the top cover B to the housing A, a smart sensor is installed on the top cover B. This smart sensor is used to monitor the parameters inside the housing A in real time when the battery cell is in use, thereby taking corresponding measures in advance to reduce the possibility of danger. The housing A is a hollow cuboid with an opening at its top. The top cover B is a rectangle that matches the shape of the top opening of the housing A. The top cover B has a sensor setting area B1 for setting the smart sensor. This sensor setting area B1 can be located in the middle of the top cover B. It should be noted that the middle of the top cover B does not necessarily refer to the center of the top cover B, but rather refers to a position that is not located at or near the two ends of the top cover B.

[0034] The top cover B of the battery cell is fixedly connected to the housing A by welding to the edge of the opening at the top of the housing A. Laser welding is used during this process, generating high temperatures. This heat is conducted through the housing A and the top cover B to the sensor setting area B1. If the high temperature exceeds the intelligent sensor's tolerance temperature, it may damage the sensor. A first clamp 1 holds the front and rear faces of the housing A, and a cooling circulation channel 2 is provided within the first clamp 1. Water is poured into and drained from the cooling circulation channel 2 through its inlet, creating a continuous water circulation path within the first clamp 1. It should be noted that continuous water circulation means that after water enters the cooling circulation channel 2 through the inlet, it can quickly exit through the outlet, and there is a continuous flow of water in and out of the cooling circulation channel 2, not that the water exiting the outlet directly enters the cooling circulation channel 2 through the inlet again.

[0035] Specifically, the first clamp 1 includes a front clamping seat 11 and a rear clamping seat 12 disposed opposite to each other. The material used can be a material with good thermal conductivity, such as aluminum or copper. The front clamping seat 11 and the rear clamping seat 12 are cuboids with the same external dimensions, and their length is greater than their height and their width (thickness). During welding, the front clamping seat 11 contacts and adheres to the front end face of the housing A, and the rear clamping seat 12 contacts and adheres to the rear end face of the housing A. Therefore, the first clamp 1 serves two purposes: firstly, it positions and fixes the housing A; secondly, the high heat generated during welding of the housing A and the cell top cover B is conducted through the housing A to the first clamp 1, and the continuously circulating water inside the first clamp 1 cools it down, thus carrying away the heat and dissipating heat during the welding process. This prevents the high temperature from exceeding the tolerance temperature of the smart sensor, which could damage the smart sensor. Furthermore, because the circulating water continuously cools the first clamp 1, it maintains a temperature difference between the first clamp 1 and the housing A and the top cover B of the battery cell, allowing heat to be conducted more quickly from the top cover B of the battery cell and the housing A to the first clamp 1, ensuring effective heat dissipation. Also, because the distance between the inlet of the cooling circulation channel 2 and the top cover B of the battery cell is less than the distance between the outlet and the top cover B of the battery cell, i.e., the first through hole 13 is closer to the top of the housing A than the second through hole 14, when water is poured into the cooling circulation channel 2, the liquid, i.e., water, flows from the position closer to the top of the housing A to the direction away from the top of the housing A. During the welding of the housing A and the top cover B of the battery cell, heat is generated at the top of the housing A first, allowing the water flow to carry away the heat immediately, ensuring timely heat dissipation.

[0036] In a specific embodiment, the first through hole 13 (water inlet) and the second through hole 14 (water outlet) are disposed on the sidewalls of the front clamping seat 11 and the rear clamping seat 12. The sidewalls are formed by the width and height of the front clamping seat 11 (rear clamping seat 12), and the first through hole 13 is located above the second through hole 14. Taking the front clamping seat 11 as an example, the first through hole 13 and the second through hole 14 are on the same sidewall. Furthermore, when the sensor setting area B1 is not at the center of the cell top cover B, that is, when it is closer to the second end relative to the first end of the cell top cover B, the first through hole 13 is also located on the sidewall of the front clamping seat 11 that is closer to the second end of the cell top cover B, thereby making the first through hole 13 closer to the sensor setting area B1 to further improve heat dissipation efficiency.

[0037] In other embodiments, the first through hole 13 and the second through hole 14 may also be respectively provided on the opposite side walls of the front clamping seat 11 and / or the rear clamping seat 12.

[0038] In a specific embodiment, the housing A further includes a left end face and a right end face disposed opposite to each other. The area of ​​the front end face of the housing A is larger than the area of ​​the left end face and the area of ​​the right end face of the housing A. That is, the housing A of the battery cell is also a hollow cuboid with a length greater than its height greater than its width (thickness). The front clamping seat 11 and the rear clamping seat 12 also each include a front end face, a rear end face, a left end face, and a right end face. The area of ​​the front end face (rear end face) is also larger than the area of ​​the left end face (right end face). The left end face and the right end face are the sidewalls of the front clamping seat 11 and the rear clamping seat 12 described in the above embodiment.

[0039] In this embodiment, during clamping, the rear end face of the front clamping seat 11 is in contact with the front end face of the housing A, and the front end face of the rear clamping seat 12 is in contact with the rear end face of the housing A to ensure the clamping stability of the first clamp 1. Furthermore, since the first through hole 13 and the second through hole 14 are located on the sidewalls of the front clamping seat 11 and the rear clamping seat 12, the cooling circulation channel 2 is arranged in a meandering manner within the front clamping seat 11 and the rear clamping seat 12. This meandering means that the cooling circulation channel 2 first extends from the sidewall where the first through hole 13 is located towards the sidewall away from the first through hole 13, and then returns from the sidewall away from the first through hole 13 towards the sidewall where the first through hole 13 is located, thus cycling through the cooling circulation channel 2 to the position of the second through hole 14. This makes the plane where the cooling circulation channel 2 is located parallel to the front and rear end faces of the housing A, and maximizes the area of ​​the heat dissipation region formed by the cooling circulation channel 2, thereby further improving heat dissipation efficiency.

[0040] In a further embodiment, the welding cooling equipment also includes a cooling pipe assembly 3, which is connected to the cooling circulation channel 2 through the first through hole 13 and the second through hole 14 on the first clamp 1, for filling and draining water into the cooling circulation channel 2.

[0041] In this embodiment, a cooling pipe assembly 3 is provided on the first clamp 1 to facilitate water filling and drainage of the cooling circulation channel 2. This cooling pipe assembly 3 can be a pipe of a certain length, with its water inlet section connected to the cold water system. Alternatively, the cooling pipe assembly 3 can be a pipe connector fixedly connected to the first through hole 13 and the second through hole 14 on the first clamp 1. The advantage of this is that the pipe connector is shorter, facilitating the transportation and assembly of the welding cooling equipment. After assembly or clamping, the pipe connector can be connected to a longer pipe, and then further connected to the cold water system. The cold water system can be the factory's tap water system or an additional cold water supply device for this welding cooling equipment.

[0042] In other embodiments, the cooling circulation channel 2 can be continuously filled with water through a funnel and a water supply device, that is, the cooling pipe group 3 is not directly connected to the first clamp 1. The advantage of this embodiment is that it can reduce the size of the welding cooling equipment, but it is not as convenient as the above embodiment in terms of water filling.

[0043] In some embodiments, the cooling circulation channel 2 includes a front cooling channel 21 disposed within the front clamping seat 11.

[0044] In this embodiment, a front cooling channel 21 is provided in the front clamping seat 11. That is, under the condition of ensuring heat dissipation function, the rear clamping seat 12 may not be provided with a cooling channel, thereby reducing the processing cost of the first clamp 1. The cooling pipe assembly 3 includes a first cooling pipe 31 and a second cooling pipe 32. The first cooling pipe 31 is connected to the water inlet of the front cooling channel 21, i.e., the first through hole 13, to fill the front cooling channel 21 with water. The second cooling pipe 32 is connected to the water outlet of the front cooling channel 21, i.e., the second through hole 14, so that the water that absorbs heat can be discharged through the second through hole 14 and the second cooling pipe 32.

[0045] In some embodiments, the cooling circulation channel 2 further includes a rear cooling channel 22, which is disposed within the rear clamping seat 12.

[0046] In this embodiment, while a front cooling channel 21 is provided in the front clamping seat 11, a rear cooling channel 22 is also provided in the rear clamping seat 12, so that the heat generated during welding can be conducted from the front end face and the rear end face of the housing A to the front clamping seat 11 and the rear clamping seat 12 respectively, thereby further improving the heat dissipation efficiency and ensuring the safety of the smart sensor during welding.

[0047] Furthermore, the cooling pipe assembly 3 also includes a third cooling pipe 33 and a fourth cooling pipe 34; the third cooling pipe 33 is connected to the water inlet of the lower rear cooling channel 22, i.e., the first through hole 13, to fill the rear cooling channel 22 with water, and the fourth cooling pipe 34 is connected to the water outlet of the rear cooling channel 22, i.e., the second through hole 14, so that the water that absorbs heat can be discharged through the second through hole 14 and the fourth cooling pipe 34.

[0048] It should be noted that in the above embodiments, the inlets of the front cooling channel 21 and the rear cooling channel 22 are both described as first through holes 13, and the outlets of the front cooling channel 21 and the rear cooling channel 22 are both described as second through holes 14.

[0049] In a further embodiment, the welding cooling device further includes a fixed plate 4 and an adjusting rod 5; the fixed plate 4 is disposed opposite to the front clamping seat 11 and / or the rear clamping seat 12, the fixed plate 4 is provided with a third through hole 41, the adjusting rod 5 passes through the third through hole 41, and the adjusting rod 5 has a moving state and a stationary state. The moving state is the state in which the adjusting rod 5 moves back and forth relative to the fixed plate 4 in the axial direction of the third through hole 41; the stationary state is the state in which the adjusting rod 5 is stationary relative to the fixed plate 4; one end of the adjusting rod 5 is fixedly connected to the front clamping seat 11 and / or the rear clamping seat 12, so that the distance between the front clamping seat 11 and the rear clamping seat 12 is adjustable.

[0050] In this embodiment, the fixing plate 4 is disposed opposite to the front clamping seat 11, that is, the fixing plate 4 is disposed on one side of the front end face of the front clamping seat 11 and is parallel to the front end face of the front clamping seat 11. The number of third through holes 41 can be set to two, which are respectively located at the lower left corner and the upper right corner of the front clamping seat 11, and the axis of the third through holes 41 is perpendicular to the front end face of the front clamping seat 11. Similarly, two adjusting rods 5 are also provided, and the two adjusting rods 5 are respectively inserted into the two third through holes 41. The adjusting rods 5 can move back and forth relative to the fixing plate 4 in the axial direction of the third through holes 41, thereby driving the front clamping seat 11 to move back and forth, while the position of the rear clamping seat 12 is relatively fixed, so as to adjust the distance between the front clamping seat 11 and the rear clamping seat 12 according to the width (thickness) of the housing A. When the adjusting rod 5 is stationary relative to the fixed plate 4, the front clamping seat 11 remains stationary relative to the rear clamping seat 12, thereby achieving the positioning and fixing of the housing A between the front clamping seat 11 and the rear clamping seat 12.

[0051] In a further embodiment, the welding cooling device also includes a spring (not shown) fitted onto the adjusting rod 5.

[0052] In this embodiment, by sleeved on the adjusting rod 5, the front clamping seat 11 can automatically move closer to the housing A after the distance between the front clamping seat 11 and the rear clamping seat 12 is adjusted, thereby clamping the housing A.

[0053] Specifically, the spring can be a compression spring, which is sleeved on the adjusting rod 5, and one end of the compression spring is fixedly connected to the fixed plate 4, and the other end is fixedly connected to the front clamping seat 11. That is, the compression spring is located on the side of the fixed plate 4 near the front clamping seat 11. When fixing and positioning the housing A, first pull the adjusting rod 5 to move the front clamping seat 11 away from the rear clamping seat 12, and maintain the tension on the adjusting rod 5. At this time, the compression spring is compressed by the action of the front clamping seat 11 and the fixing plate 4. Place the housing A between the front clamping seat 11 and the rear clamping seat 12, and align the rear end face of the housing A with the front end face of the rear clamping seat 12. Then release the adjusting rod 5. Due to the elastic force generated by the compression, the compression spring will move back to its natural state, thereby pushing the front clamping seat 11 to move towards the housing A until the rear end face of the front clamping seat 11 is aligned with the front end face of the housing A. At this time, the compression spring is still compressed, so that the front clamping seat 11 is subjected to the force of the compression spring, and thus the front clamping seat 11 can cooperate with the rear clamping seat 12 to clamp the housing A.

[0054] In another embodiment, the spring can also be a tension spring. The adjusting rod 5 has a limiting part 51 at the end away from the front clamping seat 11 and the fixed plate 4. The diameter of the limiting part 51 is larger than the diameter of the third through hole 41. The tension spring is sleeved on the adjusting rod 5, and one end of the tension spring is fixedly connected to the fixed plate 4, and the other end is fixedly connected to the limiting part 51. That is, the tension spring is located on the side of the fixed plate 4 away from the front clamping seat 11. When fixing and positioning the housing A, first pull the limiting part 51 of the adjusting rod 5 to move the front clamping seat 11 away from the rear clamping seat 12, and maintain the tension on the adjusting rod 5. At this time, the tension spring is under the action of the limiting part 51 and the fixing plate 4, and it is in a stretched state. Place the housing A between the front clamping seat 11 and the rear clamping seat 12, and align the rear end face of the housing A with the front end face of the rear clamping seat 12. Then release the adjusting rod 5. The tension spring will move back to its natural state due to the elastic force generated by the stretching, thereby driving the adjusting rod 5 to move towards the housing A, and then pushing the front clamping seat 11 to move towards the housing A until the rear end face of the front clamping seat 11 is aligned with the front end face of the housing A. At this time, the tension spring is still in a stretched state, so that the adjusting rod 5 is subjected to the force of the tension spring, and thus the front clamping seat 11 is subjected to the force of the adjusting rod 5, so that the front clamping seat 11 can cooperate with the rear clamping seat 12 to clamp the housing A.

[0055] In a further embodiment, the welding cooling device further includes a second clamp 6 and a base 7. The second clamp 6 includes a left clamping seat 61 and a right clamping seat 62. When the housing A is welded to the cell top cover B, the left clamping seat 61 and the right clamping seat 62 clamp the housing A from the left and right ends of the housing A. The left clamping seat 61, the right clamping seat 62 and the fixing plate 4 are all fixedly connected to the base 7.

[0056] In this embodiment, the left clamping seat 61, the right clamping seat 62, the fixing plate 4, and the rear clamping seat 12 can all be fixedly connected to the base 7 by means of threaded connection. That is, threaded holes are provided at the corresponding positions of the base 7 and the left clamping seat 61, the right clamping seat 62, the rear clamping seat 12, and the fixing plate 4. Correspondingly, threaded holes are also provided on the left clamping seat 61, the right clamping seat 62, the rear clamping seat 12, and the fixing plate 4. The positions of the left clamping seat 61, the right clamping seat 62, the rear clamping seat 12, and the fixing plate 4 on the base 7 are fixed by means of screw fasteners and threaded holes.

[0057] The left clamping seat 61 and the right clamping seat 62 clamp the housing A from its left and right end faces, respectively. The height of the left clamping seat 61 and the right clamping seat 62 is lower than the height of the housing A, and the net distance between the left clamping seat 61 and the right clamping seat 62 is adapted to the length of the housing A. This allows the second clamp 6 to cooperate with the first clamp 1 to position and fix the housing A in both its length and width (thickness) directions, ensuring structural stability during welding. Both the front clamping seat 11 and the rear clamping seat 12 can be configured as a combination of inner and outer layers. During clamping, the inner layer of the front clamping seat 11 is in contact with the front end face of the housing A, and the inner layer of the rear clamping seat 12 is in contact with the rear end face of the housing A. Specifically, a front cooling channel 21 is provided in the inner layer of the front clamping seat 11, and the first through hole 13 and the second through hole 14 of the front clamping seat 11 penetrate from the outer wall of the inner layer of the front clamping seat 11 into its interior, thereby connecting the external space with the front cooling channel 21 inside the front clamping seat 11. The rear cooling channel 22 is provided in the inner layer of the rear clamping seat 12, and the first through hole 13 and the second through hole 14 of the rear clamping seat 12 penetrate from the outer wall of the inner layer of the rear clamping seat 12 into its interior, thereby connecting the external space with the rear cooling channel 22 inside the rear clamping seat 12. In this way, without increasing the space occupied by the cooling circulation channel 2 inside the first clamping fixture 1, the cooling circulation channel 2 is positioned as close as possible to the front and rear faces of the housing A, ensuring that the heat at the welding point between the housing A and the cell top cover B can be carried away more quickly by the water flow within the cooling circulation channel 2, thus ensuring efficient heat dissipation.

[0058] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A welding cooling device, characterized in that, include: A first clamp is used to clamp the housing of the battery cell. The housing is welded to the top cover of the battery cell. The first clamp includes a front clamping seat and a rear clamping seat. When the first clamp clamps the housing, the front clamping seat contacts the front end face of the housing, and the rear clamping seat contacts the rear end face of the housing. The first clamp is provided with a first through hole and a second through hole. as well as A cooling circulation channel is provided inside the first fixture. The first through hole and the second through hole serve as the water inlet and water outlet of the cooling circulation channel, respectively. The distance between the water inlet and the top cover of the battery cell is less than the distance between the water outlet and the top cover of the battery cell.

2. The welding cooling equipment according to claim 1, characterized in that, It also includes a cooling pipe assembly, which is connected to the cooling circulation channel through the first through hole and the second through hole on the first clamp, so as to fill and drain water from the cooling circulation channel.

3. The welding cooling equipment according to claim 1, characterized in that, The housing also includes a left end face and a right end face that are disposed opposite to each other, and the area of ​​the front end face is greater than the area of ​​the left end face and the area of ​​the right end face; the front clamping seat and the rear clamping seat also include a front end face, a rear end face, a left end face and a right end face, and the area of ​​the front clamping seat and the rear end face is also greater than the area of ​​the left end face and the area of ​​the right end face of the front clamping seat and the rear clamping seat.

4. The welding cooling equipment according to claim 2, characterized in that, The cooling circulation channel includes a front cooling channel, which is disposed within the front clamping seat.

5. The welding cooling equipment according to claim 4, characterized in that, The cooling pipe assembly includes a first cooling pipe and a second cooling pipe; the first cooling pipe is connected to the inlet of the front cooling channel, and the second cooling pipe is connected to the outlet of the front cooling channel.

6. The welding cooling equipment according to claim 5, characterized in that, The cooling circulation channel also includes a rear cooling channel, which is disposed within the rear clamping seat.

7. The welding cooling equipment according to claim 6, characterized in that, The cooling pipe assembly also includes a third cooling pipe and a fourth cooling pipe; the third cooling pipe is connected to the inlet of the rear cooling channel, and the fourth cooling pipe is connected to the outlet of the rear cooling channel.

8. The welding cooling equipment according to claim 1, characterized in that, It also includes a fixing plate and an adjusting rod; the fixing plate is disposed opposite to the front clamping seat and / or the rear clamping seat, the fixing plate is provided with a third through hole, the adjusting rod passes through the third through hole, and the adjusting rod has a moving state and a stationary state. The moving state is the state in which the adjusting rod moves back and forth relative to the fixing plate in the axial direction of the third through hole; the stationary state is the state in which the adjusting rod is stationary relative to the fixing plate; one end of the adjusting rod is fixedly connected to the front clamping seat and / or the rear clamping seat so that the distance between the front clamping seat and the rear clamping seat can be adjusted.

9. The welding cooling equipment according to claim 8, characterized in that, It also includes a spring fitted onto the adjusting rod.

10. The welding cooling equipment according to claim 8, characterized in that, It also includes a second clamp and a base. The second clamp includes a left clamp and a right clamp. When the housing is welded to the top cover of the battery cell, the left clamp and the right clamp clamp the housing from the left and right ends of the housing. The left clamp, the right clamp, and the fixing plate are all fixedly connected to the base.

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