Welding cooling device

Abstract

The utility model relates to a welding cooling device which is used for local cooling during welding of an adapter plate and a pole of a battery, the pole is connected to a top cover plate of the battery, a first surface and a second surface are respectively formed on two side surfaces of the pole along the thickness direction of the pole, the pole is welded with the adapter plate through the first surface of the pole, and the second surface of the pole is welded with the adapter plate through the second surface of the pole. The welding cooling device comprises a cooling assembly which is provided with a cooling surface; the supporting body is used for bearing the top cover piece, a first avoiding hole is formed in the supporting body, at least part of the cooling assembly penetrates into the first avoiding hole, and the cooling face makes contact with the second face so as to cool the pole. According to the welding cooling device, the pole can be rapidly cooled, so that hot melting of a pole insulating part is effectively avoided, meanwhile, the welding cooling device can be matched with a battery top cover structure, the heat transfer path is reduced, the heat transfer efficiency is improved, the heat dissipation effect is improved, and the good cooling effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery cooling devices, in particular to a welding cooling device. Background Art

[0002] With the widespread adoption of new energy vehicles, charging and battery life issues have become core pain points for new energy vehicles. Fast charging technology is a key technology to address the lack of charging facilities, and it also provides a new approach to solving the battery life problem, becoming the current mainstream development direction. Fast charging means higher overcurrent requirements. Adapter welding (especially the welding between the adapter and the pole) is one of the bottlenecks of battery overcurrent. Fast-charging batteries require a larger welding area to ensure the overcurrent area, but the larger the welding area, the greater the welding heat input. The pole insulator, which is used to insulate and fix the pole to the top cover, is usually made of PPS (polyphenylene sulfide) or other plastic materials, and is prone to thermal melting. Thermal melting of the pole insulator can cause battery sealing problems, and in more serious cases, it can cause the pole to fall off. A Chinese patent (CN219767078U) discloses a water-cooling fixture that uses a cover plate and a base plate to clamp the pole lug and top cover. By setting a cooling water chamber in the cover plate and the base plate, the heat from the welding process is removed through the cover plate and the base plate.

[0003] The disadvantage of this existing technology is that the bottom plate is in contact with the top cover sheet, and an avoidance hole for avoiding the pole is opened on the bottom plate. The bottom plate is not in direct contact with the pole and can only transfer heat through the top cover sheet of the top cover. Since the pole needs to be insulated from the top cover sheet, a sealing ring is also provided between the pole and the top cover sheet. The lower plastic part and the pole PPS and other pole insulation parts are all plastics with small specific heat capacity. Therefore, the heat cannot be effectively transferred out in a very short welding time, resulting in the pole insulation part being hot-melted, thereby reducing the sealing of the battery cell, and in severe cases even causing the pole to fall off. Utility Model Content

[0004] To this end, the technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a welding cooling device with a compact structure and good cooling effect, so that during the battery production process, when the adapter and the pole are welded, abnormal thermal melting of the pole insulation can be effectively avoided. At the same time, the welding cooling device of the present invention can cooperate with the battery top cover structure to reduce the heat transfer path and improve the heat transfer efficiency, thereby improving the heat dissipation effect and achieving a better cooling effect.

[0005] In order to solve the above technical problems, the utility model provides a welding cooling device for local cooling of a battery adapter and a pole during welding. The pole is connected to the top cover of the battery. The two side surfaces of the pole along its thickness direction respectively form a first surface and a second surface. The pole is welded to the adapter through its first surface. The welding cooling device includes:

[0006] a cooling assembly having a cooling surface;

[0007] A support body is used to support the top cover sheet. A first avoidance hole is provided on the support body. At least a portion of the cooling assembly is inserted into the first avoidance hole, and the cooling surface contacts the second surface to cool the pole.

[0008] In one embodiment of the present invention, it also includes an elastic fastener, and the cooling assembly is movably connected to the support body through the elastic fastener. When the top cover sheet is subjected to pressure in the direction of gravity, the pressure is transmitted to the elastic fastener through the support body, so that the cooling surface has a pressing force on the second surface along the direction of gravity.

[0009] In one embodiment of the present invention, a dust cover is further included, which is arranged on a side of the adapter plate away from the pole; the dust cover is pressed against the adapter plate during welding to make the cooling assembly contact the pole.

[0010] In one embodiment of the present invention, the support body includes a base plate and a support platform, the base plate is arranged on one side surface of the support platform, the cooling assembly is connected to the other side surface of the support platform, the base plate is provided with a second avoidance hole, and the support platform is provided with a third avoidance hole, the second avoidance hole and the third avoidance hole are connected to form the first avoidance hole.

[0011] In one embodiment of the present invention, a plurality of protrusions for limiting position are provided on the edge of the bottom plate, and the top cover piece is placed on the bottom plate and limited between the plurality of protrusions.

[0012] In one embodiment of the present invention, the cooling assembly includes a main body, the main body is penetrated by the first avoidance hole, and the cooling surface is located at one end of the main body.

[0013] In one embodiment of the present invention, the cooling component also includes a circulation channel, which is arranged inside the main body, and the circulation channel has an inlet end and an outlet end. The cooling medium enters the circulation channel through the inlet end and is discharged from the outlet end. The cooling component also includes a first adapter and a second adapter, the first adapter is connected to the inlet end, and the second adapter is connected to the outlet end.

[0014] In one embodiment of the present invention, the cooling surface is provided with a flexible heat-conducting layer.

[0015] In one embodiment of the present invention, a temperature monitoring device is further included, which can monitor the temperature of the pole and feed back to the cooling component to control the cooling temperature of the cooling component.

[0016] In one embodiment of the present invention, the cooling assembly includes a through hole for temperature detection, the through hole extending in the height direction and opposite to the pole, the temperature monitoring device is arranged toward the through hole, and the temperature monitoring device can monitor the temperature of the lower surface of the pole through the through hole; and / or,

[0017] The welding cooling device further comprises a movable frame, the cooling assembly and the temperature monitoring device are mounted on the movable frame, and the movable frame can drive the cooling assembly to move until it contacts the pole.

[0018] The above technical solution of the utility model has the following advantages compared with the prior art:

[0019] The welding cooling device described in the present invention is provided with a cooling component and a support body. The cooling component has a cooling surface. The support body is used to support the top cover plate of the battery. A first avoidance hole is provided on the support body. At least part of the cooling component passes through the first avoidance hole, so that the cooling surface can be in direct contact with the pole to achieve heat dissipation of the pole. Moreover, due to the short heat transfer path, the pole can be quickly cooled in a short time, and has a high heat dissipation efficiency.

[0020] The utility model has a compact structure and is applied to the field of battery production. When welding the adapter and the pole, the pole can be quickly cooled, thereby effectively avoiding thermal melting of the pole insulation. At the same time, the welding cooling device of the utility model can cooperate with the battery top cover structure to reduce the heat transfer path and improve the heat transfer efficiency, thereby improving the heat dissipation effect and achieving a better cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model and in conjunction with the accompanying drawings, wherein

[0022] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the present utility model.

[0023] Figure 2 It is a side view schematic diagram of the overall structure of a preferred embodiment of the present utility model.

[0024] Figure 3 yes Figure 2 Cross-section along AA.

[0025] Figure 4 It is an exploded view of a preferred embodiment of the present utility model.

[0026] Figure 5It is a schematic diagram of the overall structure including the movable frame in the preferred embodiment of the present invention.

[0027] Explanation of the reference numerals in the specification: 10. Adapter; 11. Pole; 12. Top cover; 2. Cooling assembly; 20. Main body; 201. Elastic fastener; 21. Circulation channel; 210. Inlet end; 211. Outlet end; 22. First adapter; 23. Second adapter; 24. Flexible high thermal conductivity layer; 25. Through hole; 3. Support body; 30. Bottom plate; 31. Support platform; 301. Second avoidance hole; 302. Protrusion; 401. Third avoidance hole; 4. Dust cover; 5. Temperature detector; 6. Movable frame. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0029] Example 1

[0030] Reference Figure 1 As shown, the utility model discloses a welding cooling device, which is used for locally cooling the pole 11 when the adapter plate 10 and the pole 11 of the battery are welded. The pole 11 is connected to the top cover plate 12 of the battery. The two side surfaces of the pole 11 along its own thickness direction form a first surface and a second surface respectively. The pole 11 is welded to the adapter plate 10 through its first surface.

[0031] Specifically, the welding cooling device includes a cooling assembly 2 having a cooling surface, which is configured to contact the second surface of the pole 11. In this embodiment, the first surface can also be considered as the upper end surface of the pole 11, and the second surface can also be considered as the lower end surface of the pole 11.

[0032] The welding cooling device further includes a support body 3 for supporting the top cover sheet 12. A first avoidance hole is defined in the support body 3, which serves as a passage for the cooling assembly 2 to contact the second surface of the pole 11. Specifically, at least a portion of the cooling assembly 2 is inserted into the first avoidance hole, and the cooling surface contacts the second surface to cool the pole 11.

[0033] It should be noted that the first avoidance hole is arranged to correspond to the position of the pole 11 .

[0034] From this, it can be seen that the welding cooling device to be protected by the present invention is provided with a cooling assembly and a support body, the cooling assembly having a cooling surface, the support body being used to support the top cover of the battery, the support body being provided with a first avoidance hole, at least part of the cooling assembly passing through the first avoidance hole, and enabling the cooling surface to be in direct contact with the pole to achieve heat dissipation of the pole, and because the heat transfer path is short, the pole can be quickly cooled in a short time, with high heat dissipation efficiency. The present invention has a compact structure and is applied in the field of battery production. When welding the adapter plate and the pole, it can achieve rapid cooling of the pole, thereby effectively avoiding thermal melting of the pole insulation. At the same time, the welding cooling device of the present invention can cooperate with the battery top cover structure to reduce the heat transfer path, improve the heat transfer efficiency, thereby improving the heat dissipation effect and achieving a better cooling effect.

[0035] Furthermore, the welding cooling device further includes an elastic fastener 201, through which the cooling assembly 2 is movably connected to the support body 3. When the top cover sheet 12 is subjected to pressure in the direction of gravity, the pressure is transmitted to the elastic fastener 201 through the support body 3, so that the cooling surface exerts a pressing force on the second surface in the direction of gravity, thereby ensuring sufficient contact between the cooling surface and the second surface.

[0036] As a preferred embodiment, the elastic fastener 201 includes but is not limited to a spring bolt. Such a configuration can facilitate adjustment of the installation height of the cooling assembly 2 on the support body 3, so that the welding cooling device can be adapted to poles of different heights and sizes.

[0037] Furthermore, in order to collect dust generated during the welding process, the welding cooling device further includes a dust hood 4, which is disposed on a side of the adapter plate 10 away from the pole 11. The dust hood 4 is pressed against the adapter plate 10 during welding to ensure that the cooling assembly 2 and the pole 11 can achieve relatively close contact.

[0038] In detail, the support body 3 includes a base plate 30 and a support platform 31. The base plate 30 is mounted on one side of the support platform 31, and the cooling assembly 2 is connected to the other side of the support platform 31. The base plate 30 is provided with a second avoidance hole 301, and the support platform 4 is provided with a third avoidance hole 401. The second avoidance hole 301 and the third avoidance hole 401 are connected to form the first avoidance hole.

[0039] During the assembly process, the cooling assembly 2 is fixed to the base plate 30 with spring bolts, and the top cover sheet 12 is placed on the base plate 30 by a robot. At this time, the pole 11 located on the top cover sheet 12 can contact the cooling assembly 2, and the upper surface of the top cover sheet 12 is higher than the base plate 30 by a certain distance (about 0.5-1mm). Then, the dust cover 4 is pressed down, and the spring in the spring bolt is compressed until the top cover sheet 12 and the base plate 30 are completely fitted together. In this way, the cooling assembly 2 and the pole 11 can ensure good contact through the force of the spring.

[0040] As a preferred embodiment, in order to limit the position of the top cover piece 12 and avoid movement during welding, thereby affecting the welding quality, the edge of the base plate 30 is provided with a plurality of protrusions 302 for limiting the position. The top cover piece 12 is placed on the base plate 30 and can be limited to the receiving space formed by the plurality of protrusions 302.

[0041] In detail, the protrusion 302 can be integrally formed along the edge of the bottom plate 30 , or a plurality of protrusions 302 can be spaced apart along the edge of the bottom plate 30 .

[0042] As a preferred embodiment, the cooling assembly 2 includes a main body 20 , the main body 20 is penetrated through the first avoidance hole, and the cooling surface is provided at one end of the main body 20 .

[0043] As a preferred embodiment, the cooling component 2 also includes a circulation channel 21, which is arranged inside the main body 20. The circulation channel 21 has an inlet end 210 and an outlet end 211. The cooling medium enters the circulation channel 21 through the inlet end 210 and is discharged from the outlet end 211, so that the cooling medium forms a complete cycle in the circulation channel 21 to achieve the purpose of effectively reducing the temperature of the main body 20.

[0044] Specifically, in order to facilitate the introduction of the cooling medium into the circulation channel 21 , the cooling assembly 2 further includes a first adapter 22 and a second adapter 23 , wherein the first adapter 22 is connected to the inlet end 210 , and the second adapter 23 is connected to the outlet end 211 .

[0045] To increase the cooling medium's circulation time within the main body 20, the circulation channel 21 is configured in a circular ring shape, allowing the cooling medium to fully cool the main body 20. To further enhance heat dissipation, the cooling medium includes a cooling liquid or a cooling gas. The cooling liquid includes, but is not limited to, cooling water, thereby promptly dissipating welding heat during the welding process and preventing heat accumulation in the cooling device.

[0046] As a preferred embodiment, when designing and selecting materials for the cooling assembly 2 , the thermal conductivity of the material of the main body 20 may be higher than the thermal conductivity of the material of the pole 11 , thereby achieving a better heat dissipation effect.

[0047] Specifically, the main body 20 of the cooling assembly 2 is made of copper alloy, which has good thermal conductivity, thereby improving the thermal conductivity of the main body 20.

[0048] In order to avoid deformation of the pole 11 or other appearance problems such as burrs, the cooling surface is provided with a wear-resistant flexible heat-conducting layer 24.

[0049] In this embodiment, the flexible thermal conductive layer 24 is made of PI film, which has excellent temperature stability and thermal conductivity and certain compression performance. Therefore, it can protect the surface of the pole 11 well while conducting heat, and prevent the pole 11 from deformation, wear and burrs.

[0050] In order to detect the temperature of the lower surface of the pole 11 in real time, perform temperature control and data collection, the welding cooling device also includes a temperature monitoring device 5, which is used to monitor the temperature of the pole 11 and feed it back to the cooling component 2 to control the cooling temperature of the cooling component 2.

[0051] In order to facilitate real-time monitoring of the temperature of the pole 11, the cooling assembly 2 is also provided with a through hole 25 for temperature detection. Specifically, the through hole 25 is extended in the height direction, and the through hole 25 is arranged opposite to the pole 11. The temperature monitoring device 5 is arranged toward the through hole 25. With such an arrangement, the temperature monitoring device 5 can extend into the through hole 25, thereby monitoring the temperature of the lower surface of the pole 11 through the through hole 25. According to the temperature conduction law, the temperature of the lower surface of the pole 11 can be obtained to deduce the temperature of the contact surface between the pole 11 and the pole insulation part, so as to facilitate temperature control during the product production process and effectively avoid the pole insulation part from melting due to excessive temperature.

[0052] Example 2

[0053] Combine Figure 5As shown, in the multi-station adapter welding operation, since a circulating flow operation is required, the arrangement of the cooling assembly 2 and the temperature testing device 5 can be adjusted to meet the requirements of the circulating flow operation. Unlike the first embodiment, the welding cooling device also includes a movable frame 6, and the cooling assembly 2 and the temperature monitoring device 5 are mounted on the movable frame 6. The movable frame 6 can drive the cooling assembly 2 to move and move to a specified position so that the cooling assembly 2 can contact the pole 11 to achieve cooling of the pole 11.

[0054] As a preferred embodiment, the movable frame 6 is configured to be able to drive the cooling assembly 2 and the temperature detection device to move in the height direction.

[0055] During operation, when the top cover sheet 12 is positioned, the cooling assembly 2 and the temperature detection device 5 are moved and positioned directly below the pole 11 through the movable frame 6, and then driven to rise so that the cooling assembly 2 and the pole 11 are in contact, thereby realizing cooling and temperature collection during the welding process.

[0056] In some other embodiments, the temperature testing device 5 can also be directly installed on the bottom platform of the welding station, and the movable frame 6 and the cooling assembly 2 remain in their original positions. When the welding cooling device is in place, the temperature testing device 5 detects the temperature of the pole 11 through the reserved temperature detection channel.

[0057] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0058] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0059] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0060] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A welding cooling device for local cooling of a battery adapter (10) and a pole (11) during welding, wherein the pole (11) is connected to a top cover (12) of the battery, and the pole (11) has two sides along its thickness direction formed with a first surface and a second surface, respectively. The pole (11) is welded to the adapter (10) through its first surface, and is characterized in that: The welding cooling device comprises: a cooling assembly (2) having a cooling surface; A support body (3) is used to support the top cover sheet (12), and a first avoidance hole is provided on the support body (3), at least a portion of the cooling assembly (2) is inserted into the first avoidance hole, and the cooling surface contacts the second surface to cool the pole (11).

2. A welding cooling device according to claim 1, characterized in that: It also includes an elastic fastener (201), and the cooling component (2) is movably connected to the support body (3) through the elastic fastener (201). When the top cover sheet (12) is subjected to pressure in the direction of gravity, the pressure is transmitted to the elastic fastener (201) through the support body (3), so that the cooling surface has a pressing force on the second surface along the direction of gravity.

3. A welding cooling device according to claim 2, characterized in that: It also includes a dust cover (4), which is arranged on a side of the adapter plate (10) away from the pole (11); the dust cover (4) is pressed against the adapter plate (10) during welding to make the cooling assembly (2) contact the pole (11).

4. A welding cooling device according to claim 1 or 2, characterized in that: The support body (3) includes a base plate (30) and a support platform (31), the base plate (30) is arranged on one side surface of the support platform (31), the cooling assembly (2) is connected to the other side surface of the support platform (31), the base plate (30) is provided with a second avoidance hole (301), and the support platform (31) is provided with a third avoidance hole (401), and the second avoidance hole (301) and the third avoidance hole (401) are connected to form the first avoidance hole.

5. A welding cooling device according to claim 4, characterized in that: The edge of the bottom plate (30) is provided with a plurality of protrusions (302) for limiting position, and the top cover sheet (12) is placed on the bottom plate (30) and is limited between the plurality of protrusions (302).

6. A welding cooling device according to claim 1 or 2, characterized in that: The cooling assembly (2) comprises a main body (20), the main body (20) is arranged through the first avoidance hole, and the cooling surface is located at one end of the main body (20).

7. The welding cooling device according to claim 6, characterized in that: The cooling assembly (2) further includes a circulation channel (21), which is arranged inside the main body (20), and has an inlet end (210) and an outlet end (211). The cooling medium enters the circulation channel (21) through the inlet end (210) and is discharged from the outlet end (211). The cooling assembly (2) further includes a first adapter (22) and a second adapter (23), wherein the first adapter (22) is connected to the inlet end (210), and the second adapter (23) is connected to the outlet end (211).

8. The welding cooling device according to claim 1, characterized in that: The cooling surface is provided with a flexible heat-conducting layer (24).

9. The welding cooling device according to claim 1, characterized in that: It also includes a temperature monitoring device (5), which is capable of monitoring the temperature of the pole (11) and feeding back the temperature to the cooling component (2) to control the cooling temperature of the cooling component (2).

10. The welding cooling device according to claim 9, characterized in that: The cooling assembly (2) includes a through hole (25) for temperature detection, the through hole (25) is extended in the height direction, and the through hole (25) is opposite to the pole (11), the temperature monitoring device (5) is arranged toward the through hole (25), and the temperature monitoring device (5) can monitor the temperature of the lower surface of the pole (11) through the through hole (25); and / or, The welding cooling device further comprises a movable frame (6), the cooling assembly (2) and the temperature monitoring device (5) are mounted on the movable frame (6), and the movable frame (6) is capable of driving the cooling assembly (2) to move until it contacts the pole (11).

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