Rapid detection device for air tightness of liquid cooling plate of battery pack

Abstract

The utility model relates to the technical field of battery packs, and provides a battery pack liquid cooling plate air tightness rapid detection device, which comprises a clamping mechanism and an air tightness plug, the clamping mechanism comprises a control assembly, a connecting part and an extrusion part, the connecting part is hinged with the extrusion part, the connecting part and the extrusion part are both in transmission connection with the control assembly, and the air tightness plug is connected with the air tightness plug. And the control assembly is used for pushing the connecting part and the extrusion part to rotate oppositely, so that the extrusion part abuts against the liquid cooling plate. According to the rapid air tightness detection device for the battery pack liquid cooling plate, the control assembly, the connecting part and the extrusion part are arranged, and the connecting part is hinged to the extrusion part, so that when the air tightness of the liquid cooling plate is detected, the air tightness detection can be carried out by only aligning the air tightness plug with a water nozzle of the liquid cooling plate and clamping the liquid cooling plate by the connecting part and the extrusion part through the control assembly; operators can complete operation by holding and loosening with one hand, cyclic actions such as joint picking, mounting and dismounting do not need to be carried out in the whole process, and the air tightness detection efficiency can be greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a rapid detection device for the air tightness of a liquid cooling plate of a battery pack. Background Art

[0002] A battery pack liquid cooling plate is a heat dissipation device used in electric vehicles or energy storage systems. It reduces the battery temperature by circulating the coolant through the plate-shaped radiator in the battery pack. This liquid cooling plate is usually made of aluminum alloy or other thermally conductive materials and has good heat dissipation and corrosion resistance. It can effectively reduce the temperature rise of the battery under high temperature or high load conditions, extend the battery life and improve safety performance. The liquid cooling plate is usually used in conjunction with components such as pumps, radiators and pipes in the cooling system to form a complete battery pack cooling system.

[0003] After the battery pack's liquid cooling plate is produced, it needs to be tested for air tightness. Specifically, a fixed amount of gas is filled in to test whether the air pressure is maintained to determine whether the liquid cooling plate is airtight, so as to avoid leakage, etc. The joint structure for testing the air tightness of the liquid cooling plate with announcement number CN218674071U is a joint structure for testing the air tightness of the liquid cooling plate. The joint body is placed on the water nozzle to clamp the joint with the water nozzle of the liquid cooling plate to complete the air tightness test. However, the above scheme requires the installation and removal of the joint during operation. For batch testing of neatly arranged liquid cooling plates, repeated disassembly and assembly increases labor costs, and it is difficult to improve the detection efficiency. Utility Model Content

[0004] In view of this, the utility model proposes a rapid detection device for the air tightness of a battery pack liquid cooling plate. When detecting the air tightness of the liquid cooling plate, it is only necessary to align the airtight plug with the water nozzle of the liquid cooling plate, and the connecting part and the extrusion part are controlled by the component to clamp the liquid cooling plate, so that gas can be filled to detect the air tightness. The operator can complete the operation by holding and releasing one hand, and there is no need to perform cyclic actions such as joint picking, installation and disassembly throughout the process, and the efficiency of air tightness detection can be greatly improved.

[0005] The technical solution of the utility model is implemented as follows: The utility model provides a rapid detection device for the air tightness of a battery pack liquid cooling plate, including a clamping mechanism and an airtight plug, wherein:

[0006] The clamping mechanism includes a control component, a connecting part and an extruding part, wherein the connecting part and the extruding part are hinged, and both the connecting part and the extruding part are transmission-connected to the control component, and the control component is used to push the connecting part and the extruding part to rotate toward each other so that the extruding part abuts against the liquid cooling plate;

[0007] An airtight plug is arranged on the connecting part, and the airtight plug includes an insertion part and an air inlet part. The insertion part of the airtight plug faces the extrusion part of the clamping mechanism, and the insertion part is used to insert and seal the interface of the liquid cooling plate. The air inlet part is connected with the insertion part so that the detection gas enters the liquid cooling plate through the insertion part and the air inlet part of the airtight plug.

[0008] On the basis of the above technical solution, preferably, the airtight plug also includes a column, which is arranged on the connecting part, and the insertion part and the air inlet part are both fixed on the column. The interior of the column is hollow, and the insertion part and the air inlet part are connected to form an inflation pipeline.

[0009] Further preferably, an end of the column away from the insertion portion is provided with a straight groove, and one end of the connecting portion extends into the straight groove and is hinged to the column.

[0010] Further preferably, the airtight plug also includes a sealing gasket ring, an embedding groove located on the same side as the insertion part is opened on the column, the embedding groove surrounds the outer side of the insertion part, the sealing gasket ring is sleeved on the outer side of the insertion part and fixed in the embedding groove, and the sealing gasket ring is used to seal the connection gap between the insertion part and the liquid cooling plate.

[0011] On the basis of the above technical solution, preferably, the control assembly includes a gripping portion, a pressing portion and a limiting member, wherein:

[0012] The gripping portion is fixedly connected to the connecting portion;

[0013] The pressing part is hinged to the extrusion part;

[0014] One end of the limiting member is hinged to the pressing portion, and the other end extends into the holding portion, so that when the holding portion and the pressing portion move toward each other, the connecting portion and the extruding portion are pushed to rotate toward each other.

[0015] Further preferably, the control assembly further comprises an elastic return member, two ends of which are respectively arranged on the gripping portion and the extruding portion, and the elastic return member is used to pull the extruding portion to rotate the extruding portion toward a side away from the connecting portion.

[0016] Further preferably, the clamping mechanism further comprises an adjusting component, wherein the adjusting component is fixed on the holding portion and abuts against the limiting member, and the adjusting component is used to adjust the relative angle between the holding portion and the pressing portion.

[0017] More preferably, the adjustment assembly includes a connecting ring and a screw rod, wherein:

[0018] The connecting ring is fixed on the gripping portion;

[0019] The screw rod is threadedly connected to the connecting ring, and one end of the screw rod is abutted against one end of the limiting member extending into the holding portion.

[0020] On the basis of the above technical solution, preferably, the connecting portion and the extruding portion are both C-shaped, and the opening sides are arranged opposite to each other, one end of the connecting portion and the extruding portion is hinged, and the other end is used for cooperating in clamping the liquid cooling plate.

[0021] On the basis of the above technical solution, preferably, the insertion portion includes a plug, the plug is arranged in a truncated cone shape, and an air inlet groove is opened on the plug, and the air inlet groove is communicated with the air inlet portion.

[0022] Compared with the prior art, the battery pack liquid cooling plate air tightness rapid detection device of the utility model has the following advantages:

[0023] Beneficial effects:

[0024] (1) By setting a control component, a connecting part and an extruding part, and making the connecting part and the extruding part hinged, when testing the air tightness of the liquid cooling plate, it is only necessary to align the airtight plug with the water nozzle of the liquid cooling plate, and clamp the liquid cooling plate with the connecting part and the extruding part through the control component, and then the gas can be filled to test the air tightness. The operator can complete the operation by holding and releasing one hand, and there is no need to perform cyclic actions such as joint picking, installation and removal throughout the process, and the efficiency of air tightness testing can be greatly improved;

[0025] (2) By providing an elastic reset member, when a liquid cooling plate is subjected to an air tightness test, the elastic reset member is stretched by the rotating extrusion portion, storing a certain tensile force. When the test is completed, the operator releases the pressing portion, and the elastic reset member can pull the extrusion portion away from the liquid cooling plate, thereby directly removing the device from the liquid cooling plate, further saving manpower and operation steps;

[0026] (3) By setting an adjustment component on the clamping mechanism, since the holding portion, the pressing portion, the limiter and the extrusion portion form a parallelogram structure, the relative angle between the holding portion and the pressing portion can be changed by pushing the contact position of the limiter and the holding portion through the adjustment component. When the relative angle between the holding portion and the pressing portion changes, the rotation stroke of the extrusion portion will also change accordingly. By setting the adjustment component, the air tightness detection operation can be adapted to liquid cooling plates of different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A three-dimensional diagram of a rapid air tightness detection device for a battery pack liquid cooling plate of the utility model;

[0029] Figure 2 A three-dimensional diagram from another perspective of the battery pack liquid cooling plate air tightness rapid detection device of the utility model;

[0030] Figure 3 It is a side view of the airtight plug of the battery pack liquid cooling plate airtightness rapid detection device of the utility model;

[0031] Figure 4 for Figure 3 Sectional view at AA. DETAILED DESCRIPTION

[0032] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] like Figure 1-2 As shown, the battery pack liquid cooling plate air tightness rapid detection device of the utility model includes a clamping mechanism 1 and an airtight plug 2.

[0034] The clamping mechanism 1 includes a control component 11, a connecting part 12 and an extruding part 13. The connecting part 12 and the extruding part 13 are hinged so that the connecting part 12 and the extruding part 13 can rotate relative to each other, thereby realizing an opening and closing action to clamp one end of the liquid cooling plate having a water nozzle. The connecting part 12 and the extruding part 13 are both transmission-connected to the control component 11. The control component 11 is used to push the connecting part 12 and the extruding part 13 to rotate toward each other. The operator can push the connecting part 12 and the extruding part 13 to rotate by using the control component 11. When the connecting part 12 and the extruding part 13 rotate toward each other, their clamping ends will move toward the liquid cooling plate together, so that the extruding part 13 abuts against the liquid cooling plate, and then the connecting part 12 and the extruding part 13 cooperate with each other to complete the clamping of the liquid cooling plate.

[0035] In this embodiment, the clamping mechanism 1 clamps the liquid cooling plate through the relative rotation of the connecting portion 12 and the extruding portion 13, thereby achieving relative fixation of the clamping mechanism 1 and the liquid cooling plate, thereby providing a prerequisite for subsequent docking and sealing with the water nozzle of the liquid cooling plate.

[0036] like Figure 2-4As shown, the airtight plug 2 is arranged on the connecting part 12, and the airtight plug 2 includes an insertion part 21 and an air inlet part 22. The insertion part 21 of the airtight plug 2 faces the extrusion part 13 of the clamping mechanism 1, and the insertion part 21 is used to insert and seal the interface of the liquid cooling plate, and the interface of the liquid cooling plate is its water nozzle. That is to say, when the connecting part 12 and the extrusion part 13 rotate relative to each other, the connecting part 12 will drive the airtight plug 2 to move toward the interface of the liquid cooling plate. After the connecting part 12 and the extrusion part 13 are unable to move, the insertion part 21 of the extruded airtight plug 2 is tightly inserted into the liquid cooling plate water nozzle, and the air inlet part 22 is connected with the insertion part 21, so that the detection gas enters the liquid cooling plate through the insertion part 21 and the air inlet part 22 of the airtight plug 2.

[0037] In this embodiment, the connecting part 12 needs to be connected to an air pump to supply air through the air pump, and then the air pressure is maintained by the air pressure detection instrument on the air supply pipeline. In actual operation, first, the insertion part 21 on the airtight plug 2 is aligned with the water nozzle of the liquid cooling plate and made to contact each other, and then the connecting part 12 and the extrusion part 13 are rotated toward each other through the control component 11. During the rotation, the extrusion part 13 contacts and presses the liquid cooling plate, so that the insertion part 21 and the water nozzle of the liquid cooling plate are precisely fitted, and the gap is sealed by elastic deformation. At this time, the air pump is used to inflate toward the liquid cooling plate through the airtight plug 2, thereby completing the airtightness detection operation. After the detection is completed, the connecting part 12 and the extrusion part 13 are rotated in opposite directions to leave the current liquid cooling plate and detect the next liquid cooling plate.

[0038] like Figure 3-4 As shown, as a preferred embodiment, the airtight plug 2 also includes a column 23, which is arranged on the connecting portion 12. The column 23 needs to have good deformation resistance and is preferably made of stainless steel. The insertion portion 21 and the air inlet portion 22 are both fixed on the column 23. The interior of the column 23 is hollow, and the insertion portion 21 and the air inlet portion 22 are connected to form an inflation pipeline. Specifically, one end of the column 23 is open and the other end is closed. The insertion portion 21 is fixed on the end of the column 23 with an opening, and is connected with the interior of the column 23 through the opening. The air inlet portion 22 is arranged on the outside of the column 23 and is connected to an external air supply pipeline, so that the air supply pipeline is connected with the interior of the column 23, and then connected to the insertion portion 21, forming a complete inflation pipeline, so that the detection gas can enter the liquid cooling plate through the inflation pipeline through the liquid cooling plate water nozzle for air tightness detection.

[0039] In addition, a S-shaped groove is formed at one end of the column 23 away from the insertion portion 21, and one end of the connecting portion 12 extends into the S-shaped groove and is hinged to the column 23, so that the column 23 can be rotated relative to the connecting portion 12 through the S-shaped groove. Specifically, in the process of clamping the liquid cooling plate between the connecting portion 12 and the extrusion portion 13, the column 23 can be rotated to allow the insertion portion 21 to vertically enter the water nozzle of the liquid cooling plate, thereby avoiding poor air tightness caused by the insertion at an angle or affecting the structural stability of the water nozzle.

[0040] In order to improve the airtightness of the connection between the airtight plug 2 and the liquid cooling plate water nozzle, the airtight plug 2 also includes a sealing gasket 24. The column 23 is provided with an embedding groove located on the same side as the insertion part 21, and the embedding groove surrounds the outer side of the insertion part 21. The sealing gasket 24 is sleeved on the outer side of the insertion part 21 and fixed in the embedding groove. The sealing gasket 24 is used to seal the connection gap between the insertion part 21 and the liquid cooling plate. Specifically, the sealing gasket 24 is made of a material with a certain elasticity, preferably a rubber material. The sealing gasket 24 is embedded in the column 23 through the embedding groove for fixation. After the insertion part 21 is inserted into the liquid cooling plate water nozzle, the sealing gasket 24 will contact the water nozzle and produce elastic deformation, thereby sealing the connection gap between the insertion part 21 and the liquid cooling plate water nozzle, forming a secondary sealing structure, further improving the sealing of the connection gap, and avoiding air leakage at the connection to affect the detection results.

[0041] In this embodiment, the control assembly 11 includes a gripping portion 111, a pressing portion 112 and a limiting member 113. The gripping portion 111 is fixedly connected to the connecting portion 12, the pressing portion 112 is hinged to the extruding portion 13, one end of the limiting member 113 is hinged to the pressing portion 112, and the other end extends into the gripping portion 111, so that when the gripping portion 111 and the pressing portion 112 move toward each other, the connecting portion 12 and the extruding portion 13 are pushed to rotate toward each other. Specifically, when the operator is operating, the thumb and the thumb are attached to the gripping portion 111. 11, and use fingers to hook the pressing part 112. When the holding part 111 and the pressing part 112 are close to each other, the holding part 111, the pressing part 112, the limiting member 113 and the extruding part 13 form a parallelogram. The four vertices of the parallelogram are all hinge points. The pressing part 112 moves toward the holding part 111, and the extruding part 13 can be pushed to rotate toward the connecting part 12, so that the operator can realize the opposite rotation of the connecting part 12 and the extruding part 13 with one hand, thereby clamping the liquid cooling plate.

[0042] As a preferred embodiment, the control component 11 also includes an elastic return member 114, the two ends of which are respectively arranged on the holding portion 111 and the extruding portion 13, and the elastic return member 114 is used to pull the extruding portion 13 to rotate the extruding portion 13 toward the side away from the connecting portion 12. When a liquid cooling plate is subjected to an air tightness test, the elastic return member 114 is stretched by the rotating extruding portion 13 to store a certain tensile force. When the test is completed, the operator releases the pressing portion 112, and the elastic return member 114 can pull the extruding portion 13 away from the liquid cooling plate, thereby directly removing the device from the liquid cooling plate. Specifically, the elastic return member 114 is preferably a spring, and a hook is provided on the holding portion 111, and a hanging hole is provided on the extruding portion 13. One end of the elastic return member 114 is hung on the hook, and the other end passes through the hanging hole to be connected to the extruding portion 13.

[0043] In this embodiment, the clamping mechanism 1 also includes an adjusting component 14, which is fixed on the holding portion 111 and abutted against the limiter 113. The adjusting component 14 is used to adjust the relative angle between the holding portion 111 and the pressing portion 112. Since the holding portion 111, the pressing portion 112, the limiter 113 and the extrusion portion 13 form a parallelogram structure, the relative angle between the holding portion 111 and the pressing portion 112 can be changed by pushing the contact position of the limiter 113 and the holding portion 111 through the adjusting component 14. When the relative angle between the holding portion 111 and the pressing portion 112 changes, the rotation stroke of the extrusion portion 13 will also change accordingly. By setting the adjusting component 14, the air tightness detection operation can be adapted to liquid cooling plates of different thicknesses.

[0044] Specifically, the adjustment component 14 includes a connecting ring 141 and a screw rod 142. The connecting ring 141 is fixed on the holding portion 111. Preferably, the connecting ring 141 and the holding portion 111 are integrally formed to improve production efficiency and structural stability. The screw rod 142 is threadedly connected to the connecting ring 141, and one end of the screw rod 142 is abutted against one end of the limiting member 113 extending into the holding portion 111. When the screw rod 142 rotates, the amount of entry of the screw rod 142 into the holding portion 111 can be changed, and the contact position of the screw rod 142 and the limiting member 113 in the holding portion 111 can be changed, thereby changing the connection position of the limiting member 113 and the holding portion 111, thereby realizing the adjustment of the relative angle between the holding portion 111 and the pressing portion 112.

[0045] As a preferred embodiment, the connecting portion 12 and the extruding portion 13 are both C-shaped, and the opening sides are arranged opposite to each other. This arrangement can accommodate a liquid cooling plate with a larger thickness, and will not limit the entry length of the liquid cooling plate between the connecting portion 12 and the extruding portion 13 due to the angle between the connecting portion 12 and the extruding portion 13.

[0046] In this embodiment, the insertion portion 21 includes a plug 211, which is arranged in a truncated cone shape and has an air inlet groove on the plug 211. The air inlet groove is connected to the air inlet portion 22. The truncated cone-shaped plug 211 can be directly inserted after preliminary alignment with the water nozzle of the liquid cooling plate. The alignment correction is performed through the inclined surface of the truncated cone, which is beneficial to reducing the difficulty of docking the insertion portion 21 with the liquid cooling plate. At the same time, the air inlet groove is arranged in a straight line. For some thinner liquid cooling plates, after the insertion portion 21 is inserted, the distance between the insertion portion 21 and the inner wall of the liquid cooling plate may be small, which affects the amount of gas entering. At the same time, the reverse air pressure requires the operator to increase the clamping force. The straight-line air inlet groove can deliver gas into the liquid cooling plate from the side, increase the air intake area, and reduce the reverse pressure generated by the air pressure, so as to save the operator's manpower.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rapid air tightness detection device for a battery pack liquid cooling plate, characterized in that: It comprises a clamping mechanism (1) and an airtight plug (2), wherein: The clamping mechanism (1) comprises a control component (11), a connecting portion (12) and an extruding portion (13); the connecting portion (12) and the extruding portion (13) are hingedly connected; the connecting portion (12) and the extruding portion (13) are both transmission-connected to the control component (11); the control component (11) is used to push the connecting portion (12) and the extruding portion (13) to rotate towards each other, so that the extruding portion (13) abuts against the liquid cooling plate; An airtight plug (2) is arranged on the connecting portion (12), and the airtight plug (2) comprises an insertion portion (21) and an air inlet portion (22). The insertion portion (21) of the airtight plug (2) faces the extrusion portion (13) of the clamping mechanism (1), and the insertion portion (21) is used to insert into and seal the interface of the liquid cooling plate. The air inlet portion (22) is connected to the insertion portion (21) so that the detection gas enters the liquid cooling plate through the insertion portion (21) and the air inlet portion (22) of the airtight plug (2).

2. The battery pack liquid cooling plate air tightness rapid detection device according to claim 1, characterized in that: The airtight plug (2) further comprises a column (23), wherein the column (23) is arranged on the connecting portion (12), the inserting portion (21) and the air inlet portion (22) are both fixed on the column (23), the column (23) is hollow inside and connects the inserting portion (21) and the air inlet portion (22) to form an air charging pipeline.

3. The battery pack liquid cooling plate air tightness rapid detection device according to claim 2, characterized in that: A straight groove is formed at one end of the column (23) away from the insertion portion (21), and one end of the connecting portion (12) extends into the straight groove and is hinged to the column (23).

4. The battery pack liquid cooling plate air tightness rapid detection device according to claim 2, characterized in that: The airtight plug (2) also includes a sealing gasket (24); an embedding groove located on the same side as the insertion part (21) is opened on the column (23); the embedding groove surrounds the outer side of the insertion part (21); the sealing gasket (24) is sleeved on the outer side of the insertion part (21) and fixed in the embedding groove; the sealing gasket (24) is used to seal the connection gap between the insertion part (21) and the liquid cooling plate.

5. The battery pack liquid cooling plate air tightness rapid detection device according to claim 1, characterized in that: The control assembly (11) comprises a gripping portion (111), a pressing portion (112) and a limiting member (113), wherein: The gripping portion (111) is fixedly connected to the connecting portion (12); The pressing portion (112) is hingedly connected to the extruding portion (13); One end of the limiting member (113) is hinged to the pressing portion (112), and the other end extends into the holding portion (111), so that when the holding portion (111) and the pressing portion (112) move towards each other, the connecting portion (12) and the extruding portion (13) are pushed to rotate towards each other.

6. The battery pack liquid cooling plate air tightness rapid detection device according to claim 5, characterized in that: The control assembly (11) further comprises an elastic return member (114), the two ends of which are respectively arranged on the gripping portion (111) and the extruding portion (13), and the elastic return member (114) is used to pull the extruding portion (13) so that the extruding portion (13) rotates toward a side away from the connecting portion (12).

7. The battery pack liquid cooling plate air tightness rapid detection device according to claim 5, characterized in that: The clamping mechanism (1) further comprises an adjusting component (14), wherein the adjusting component (14) is fixed on the holding portion (111) and abuts against the limiting member (113), and the adjusting component (14) is used to adjust the relative angle between the holding portion (111) and the pressing portion (112).

8. The battery pack liquid cooling plate air tightness rapid detection device according to claim 7, characterized in that: The adjustment assembly (14) comprises a connecting ring (141) and a screw rod (142), wherein: The connecting ring (141) is fixed on the gripping portion (111); The screw rod (142) is threadedly connected to the connecting ring (141), and one end of the screw rod (142) abuts against one end of the limiting member (113) extending into the holding portion (111).

9. The battery pack liquid cooling plate air tightness rapid detection device according to claim 1, characterized in that: The connecting portion (12) and the extruding portion (13) are both C-shaped, and the opening sides are arranged opposite to each other; one end of the connecting portion (12) and the extruding portion (13) is hinged, and the other end is used for cooperating with and clamping the liquid cooling plate.

10. The battery pack liquid cooling plate air tightness rapid detection device according to claim 1, characterized in that: The insertion portion (21) comprises a plug (211), the plug (211) is arranged in a truncated cone shape, and an air intake groove is provided on the plug (211), and the air intake groove is communicated with the air intake portion (22).

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