Battery hanging lug welding tool

Abstract

The utility model provides a battery hanging lug welding tool which is used for welding a hanging lug on a shell of a battery and comprises a base and a pressing and holding piece, at least one side of the base in the first direction is provided with a side plate, and the pressing and holding piece is arranged on the side plate. A first mounting part for mounting a battery and a second mounting part for mounting the hanging lug are arranged on the base. In the process of welding the hanging lug on the battery, the pressing and holding piece can move in the first direction relative to the base, so that the hanging lug is pressed on the shell of the battery, the hanging lug and the shell are fully connected in an abutting mode, the phenomenon of insufficient welding is avoided, and the welding quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a battery hanging ear welding tool. Background Art

[0002] As one of the core components of electric vehicles, power batteries play a vital role in the endurance and safety of electric vehicles. Among them, the solution of using soft-pack cells to form power batteries is becoming increasingly popular. During the assembly process, the cells need to be placed in the battery shell, and the battery shell is welded with a lug. When the battery is in use, it needs to be connected and fixed to the vehicle through the lug to ensure the installation stability of the battery. Therefore, the welding effect of the battery shell and the lug is crucial to the stability of the battery.

[0003] In the prior art, the problem of poor soldering of the battery lugs is easy to occur during the welding process of the battery lugs, which is not conducive to the safe use of the battery. Utility Model Content

[0004] In view of this, the utility model provides a battery hanging ear welding tool to at least solve the problem of poor solder joints in the prior art of battery hanging ear welding.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] The utility model provides a battery hanging ear welding tool, which is used to weld the hanging ear to the battery shell, and comprises a base and a pressing piece;

[0007] The base has a first direction, a second direction and a third direction which are perpendicular to each other; the base is provided with a side plate along at least one side of the first direction, and the holding member is provided on the side plate;

[0008] The base is provided with a first mounting portion and a second mounting portion arranged along the first direction, wherein the second mounting portion is located between the first mounting portion and the side plate; the first mounting portion is used to install a battery, the battery comprising a shell and a battery cell arranged in the shell, and the second mounting portion is used to install a hanging ear;

[0009] The pressing member moves relative to the base along the first direction to press the hanging ear onto the shell.

[0010] Optionally, a connecting hole penetrating the side plate along the first direction is provided on the side plate, and the holding piece is passed through the connecting hole.

[0011] Optionally, the connecting hole is a threaded hole, and the holding member is a bolt.

[0012] Optionally, there are a plurality of connection holes, and the plurality of connection holes are distributed in an array on the side plate.

[0013] Optionally, the first mounting portion is provided with a first mounting groove.

[0014] Optionally, the second mounting portion is provided with a second mounting groove, and a groove depth of the second mounting groove along the third direction does not exceed a groove depth of the first mounting groove along the third direction.

[0015] Optionally, a heat insulation plate is further included; the battery further includes a battery cell arranged in the shell, and the heat insulation plate is arranged on the first mounting portion and extends along the third direction to pass through the shell and the battery cell.

[0016] Optionally, a slot extending along the second direction is provided on the first mounting portion, the slot is arranged close to the second mounting portion, and the heat insulation board is clamped in the slot.

[0017] Optionally, along the first direction, a projection of the hanging ear at least partially overlaps with a projection of the heat insulation board.

[0018] Optionally, the base is provided with limiting plates on both sides along the second direction, and the limiting plates are used to abut against the shell of the battery.

[0019] Compared with the prior art, the battery hanging ear welding tool described in the utility model has the following advantages:

[0020] The battery hanging ear welding tool of the utility model comprises a base and a pressing member, wherein the pressing member is arranged on the side plate of the base, and the base is provided with a first mounting portion for mounting the battery and a second mounting portion for mounting the hanging ear. In the process of welding the hanging ear for the battery, the pressing member can move relative to the base in a first direction, thereby pressing the hanging ear against the battery shell, so that the hanging ear and the shell are fully abutted, thereby avoiding the occurrence of a cold welding phenomenon and ensuring the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0022] Figure 1 It is a schematic diagram of a battery hanging ear welding tool in an embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of another battery hanging ear welding tool in the embodiment of the utility model;

[0024] Figure 3 It is a side view of a battery hanging ear welding tool in an embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of welding a battery hanging ear and a shell by using a battery hanging ear welding tool in an embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1-base, 11-first mounting part, 12-second mounting part, 2-pressing part, 3-side plate, 30-connecting hole, 4-heat insulation board, 110-card slot, 5-limiting plate, 6-battery, 61-housing, 62-battery cell, 7-hanging ear. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] The terms "first", "second", etc. in the specification and claims of the present utility model are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the utility model can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0030] It should be understood that the reference to "some embodiments" throughout the specification means that specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the utility model. Therefore, the "in some embodiments" appearing in various places throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0031] The following describes in detail a battery hanging ear welding tool provided by the utility model by listing specific embodiments.

[0032] Reference Figures 1 to 4The utility model provides a battery hanging ear welding tool, comprising a base 1 and a holding piece 2; the base 1 has a first direction X, a second direction Y and a third direction Z which are perpendicular to each other; the base 1 is provided with a side plate 3 on at least one side along the first direction X, and the holding piece 2 is arranged on the side plate 3; the base 1 is provided with a first mounting portion 11 and a second mounting portion 12 arranged along the first direction X, wherein the second mounting portion 12 is located between the first mounting portion 11 and the side plate 3; the first mounting portion 11 is used to install a battery 6, the battery 6 includes a shell 61 and a battery cell 62 arranged in the shell 61, and the second mounting portion 12 is used to install a hanging ear 7; the holding piece 2 moves relative to the base 1 along the first direction X to press the hanging ear 7 against the shell 61.

[0033] Specifically, the base 1 has a first direction X, a second direction Y and a third direction Z which are perpendicular to each other. The first direction X, the second direction Y and the third direction Z are as follows: Figures 1 to 4 As shown in the directions marked by the arrows in the figure, the "vertical" in the embodiment of the utility model includes not only the absolutely vertical situation, but also the generally recognized vertical situation, such as the state where the angles formed by the first direction X, the second direction Y and the third direction Z are 89° to 91°, which are all considered to be the first direction X, the second direction Y and the third direction Z are mutually perpendicular. The base 1 is made of hard metal or alloy, and can also be made by casting technology, such as steel castings, aluminum castings, etc. The base 1 has good strength and rigidity, and can provide stable support for the battery 6.

[0034] like Figure 1 As shown, the base 1 is provided with a first mounting portion 11 and a second mounting portion 12 arranged along the first direction X. The first mounting portion 11 is located in the middle area of ​​the base 1, and the second mounting portion 12 is located on one side or both sides of the first mounting portion 11 along the first direction X, specifically between the first mounting portion 11 and the side plate 3. The first mounting portion 11 is used to mount the battery 6. The battery 6 includes a shell 61 and a battery cell 62 arranged in the shell 61. The shell 61 is made of hard metal or alloy and can protect the battery cell 62 therein. The second mounting portion 12 is used to mount the hanging ear 7. The hanging ear 7 is welded to the shell 61. After the hanging ear 7 is welded to the shell 61 of the battery 6, the hanging ear 7 can be used to hang the battery 6 on an external wall or equipment. In some scenarios where it is necessary to weld the hanging ear 7 on one side of the battery 6, a first mounting portion 11 and a second mounting portion 12 may be provided on the base 1, and the second mounting portion 12 is located between the first mounting portion 11 and the side panel 3; in some scenarios where it is necessary to weld the hanging ear 7 on both sides of the battery 6, a first mounting portion 11 and two second mounting portions 12 may be provided on the base 1, and the two second mounting portions 12 are located on opposite sides of the first mounting portion 11 along the first direction X. At the same time, there are also two side panels 3, and the two second mounting portions 12 are respectively located between the first mounting portion 11 and one side panel 3.

[0035] like Figure 1 and Figure 2 As shown, the holding member 2 is provided on the side plate 3 and is movably connected with the side plate 3. The holding member 2 moves relative to the base 1 along the first direction X. When the holding member 2 moves in the direction close to the second mounting portion 12, the holding member 2 can push and squeeze the hanging ear 7 so as to press the hanging ear 7 against the housing 61. In some embodiments, a through hole is provided on the side plate 3 and passes through the side plate 3 along the first direction X. The holding member 2 is inserted into the through hole and cooperates with the clearance of the through hole. The holding member 3 can move relative to the through hole, so as to realize the movement of the holding member 2 relative to the base 1 along the first direction X. In other embodiments, the end surface of the side plate 3 is provided with a slide groove arranged along the first direction X. The holding member 2 is embedded in the slide groove and cooperates with the slide groove in a sliding manner. The holding member 3 slides along the slide groove so as to realize the movement of the holding member 2 relative to the base 1 along the first direction X.

[0036] In summary, the battery hanging ear welding tool of the present application includes a base 1 and a holding member 2, the holding member 2 is arranged on the side plate 3 of the base 1, and the base 1 is provided with a first mounting portion 11 for mounting the battery 6 and a second mounting portion 12 for mounting the hanging ear 7. In the process of welding the hanging ear 7 for the battery 6, the holding member 2 can move relative to the base 1 along the first direction X, so as to press the hanging ear 7 against the shell 61 of the battery 6, so that the hanging ear 7 is fully abutted against the shell 61, thereby avoiding the phenomenon of cold welding and ensuring the welding quality.

[0037] Optionally, refer to Figure 3 A connecting hole 30 is provided on the side plate 3 and penetrates the side plate 3 along the first direction X, and the holding member 2 is passed through the connecting hole 30 .

[0038] Specifically, the connection hole 30 can be circular, square, rectangular or any other irregular shape. In the embodiment of the utility model, the connection hole 30 is set to be circular. During the process of the pressing member 2 passing through the connection hole 30, the pressing member 2 can be rotated to facilitate the smooth penetration of the pressing member 2, thereby avoiding the situation where the pressing member 2 cannot pass through the connection hole 30 smoothly due to the influence of the processing error. The pressing member 2 is passed through the connection hole 30 and is in clearance with the connection hole 30, so that the pressing member 2 can move relative to the connection hole 30. During the movement, the connection hole 30 can also guide the pressing member 2 to avoid the deviation of the movement direction of the pressing member 2. When the pressing member 2 moves to abut the hanging ear 7 and presses the hanging ear 7 against the shell 61, the pressing member 2 is fixed. For example, a locking mechanism can be provided on the side plate 3 to fix the pressing member 2 by the locking mechanism, or the pressing member 2 can be fixed manually to prevent the pressing member 2 from continuing to generate movement in the first direction X, causing it to separate from the hanging ear 7 and affecting the welding quality of the hanging ear 7 and the shell 61, or causing the pressing member 2 to excessively squeeze the hanging ear 7 and cause damage to the hanging ear 7.

[0039] Optionally, the connecting hole 30 is a threaded hole, and the holding member 2 is a bolt.

[0040] Specifically, the inner wall of the connection hole 30 is processed with an internal thread, and the holding member 2 is a bolt with an external thread on its surface. The holding member 2 is gradually screwed into the connection hole 30 along the first direction X until the holding member 2 abuts against the hanging ear 7 and presses the hanging ear 7 onto the shell 61. This pressing method can ensure that the holding member 2 contacts the hanging ear 7 at a relatively uniform speed or slowly and presses the hanging ear 7, thereby avoiding damage to the surface of the hanging ear 7 caused by sudden impact force during the pressing process. At the same time, the pressing of the hanging ear 7 by threaded tightening can also ensure the pressing effect of the hanging ear 7, thereby reducing the risk of cold welding and ensuring the welding quality of the hanging ear 7 and the shell 61. In the process of tightening the holding member 2, it can be tightened in a diagonal manner to improve the tightening effect of the holding member 2.

[0041] Optionally, refer to Figure 3 There are multiple connection holes 30, and the multiple connection holes 30 are distributed in an array on the side plate 3.

[0042] Specifically, there can be three or more connection holes 30, and the multiple connection holes 30 are distributed in an array on the side plate 3. For example, when there are three connection holes 30, the three connection holes 30 can be distributed in a triangular shape on the side plate 3. When there are four connection holes 30, the four connection holes 30 can be distributed in a rectangular or square shape on the side plate 3. When there are five connection holes 30, the five connection holes 30 can be distributed in a trapezoidal shape on the side plate 3. Of course, the multiple connection holes 30 are not limited to the above distribution forms. Multiple connection holes 30 are distributed in an array on the side plate 3 to avoid stress concentration on the side plate 3. The holding member 2 is inserted into the connection hole 30 and is also distributed in an array on the side plate 3, which helps to improve the stability of the holding member 2, thereby ensuring the pressing effect of the holding member 2 on the hanging ear 7 and reducing the risk of cold welding.

[0043] Optionally, the first mounting portion 11 is provided with a first mounting groove.

[0044] Specifically, a first mounting groove is provided on the first mounting portion 11, and the shape structure of the first mounting groove is set according to the shape structure of the battery 6. Normally, the battery 6 is a rectangular structure, so the first mounting groove is also set to a rectangular groove. The battery 6 is placed in the first mounting groove and contacts with the groove wall of the first mounting groove. The first mounting groove can limit the battery 6 to avoid shaking of the battery 6 when the pressing member 2 presses the hanging ear 7, which helps to make the hanging ear 7 fully contact with the shell 61, thereby improving the pressing effect of the pressing member 2 and reducing the risk of cold welding.

[0045] Optionally, the second mounting portion 12 is provided with a second mounting groove, and the groove depth of the second mounting groove along the third direction Z does not exceed the groove depth of the first mounting groove along the third direction Z.

[0046] Specifically, the second mounting portion 12 is provided with a second mounting groove, and the shape structure of the second mounting groove is set according to the shape structure of the ear 7. The ear 7 can be bent into an "L"-shaped structure by a sheet metal part. A bent part of the "L"-shaped structure is embedded in the second mounting groove. The second mounting groove plays a limiting role on the ear 7 to prevent the ear 7 from shifting when the pressing part 2 presses the ear 7. The other bent part of the "L"-shaped structure has a welding surface, and the ear 7 is welded to the shell 61 through the welding surface.

[0047] The groove depth of the second installation groove along the third direction Z should not exceed the groove depth of the first installation groove along the third direction Z. When the groove depth of the second installation groove along the third direction Z does not exceed the groove depth of the first installation groove along the third direction Z, there is still a certain distance between the bottom of the hanging ear 7 and the bottom of the shell 61, and the orthographic projection of the welding surface of the hanging ear 7 on the shell 61 is located inside the shell 61, so that the hanging ear 7 and the shell 61 are fully in contact and welded. When the groove depth of the second installation groove along the third direction Z is equal to the groove depth of the first installation groove along the third direction Z, the bottom of the hanging ear 7 is flush with the bottom of the shell 61, and the orthographic projection of the welding surface of the hanging ear 7 on the shell 61 is just located inside the shell 61, so that the hanging ear 7 and the shell 61 can also be fully in contact and welded. When the groove depth of the second installation groove along the third direction Z exceeds the groove depth of the first installation groove along the third direction Z, the bottom of the ear 7 exceeds the bottom of the shell 61, and the orthographic projection of the welding surface of the ear 7 on the shell 61 is partially located inside the shell 61 and partially located outside the shell 61, resulting in the upper part of the ear 7 being welded to the shell 61, and the lower part of the ear 7 being exposed outside the shell 61, affecting the welding effect and welding quality.

[0048] Optionally, refer to Figure 2 The battery hanger welding tool also includes a heat insulation board 4; the heat insulation board 4 is arranged on the first mounting portion 11 and extends along the third direction Z to pass through the shell 61 and the battery core 62.

[0049] Specifically, the heat insulation board 4 can be made of nylon, rubber, silicone and other materials, and has good heat insulation and buffering properties. The heat insulation board 4 is arranged on the first mounting part 11, and is located on the side of the first mounting part 11 close to the second mounting part 12. The heat insulation board 4 extends along the third direction Z. When the battery 6 is placed on the first mounting part 11, the heat insulation board 4 will be inserted into the gap between the shell 61 and the battery cell 62. Then, during the welding of the hanging ear 7, the heat insulation board 4 can play a local supporting role on the shell 61, avoid local deformation or damage of the shell 61, and ensure the integrity of the shell 61. In addition, since heat is generated during the welding of the hanging ear 7 and the shell 61, the heat insulation board 4 can separate the battery cell 62 from the shell 61, reduce the heat conducted to the battery cell 62, and prevent damage to the battery cell 62. It can also prevent the battery cell 62 from being welded during the welding of the hanging ear 7, thereby protecting the safety of the battery cell 62. It should be noted that if the battery 6 adopts a single-sided welding lug 7, then one insulation board 4 can be provided, which is located on the side where the lug 7 is located. If the battery 6 adopts a double-sided welding lug 7, then two insulation boards 4 can be provided, and the two insulation boards 4 are arranged on opposite sides of the first mounting portion 11 along the first direction X.

[0050] Optionally, refer to Figure 1 The first mounting portion 11 is provided with a slot 110 extending along the second direction Y. The slot 110 is arranged close to the second mounting portion 12 , and the heat insulation board 4 is clamped in the slot 110 .

[0051] Specifically, the first mounting portion 11 is provided with a slot 110 extending along the second direction Y, and the slot 110 is located on a side close to the second mounting portion 12. During the welding process, the heat insulation board 4 is first inserted into the slot 110, and then the battery 6 is installed on the first mounting portion 11. The slot 110 can pre-fix the heat insulation board 4 to prevent the heat insulation board 4 from tipping over during the installation of the battery 6, thereby ensuring that the heat insulation board 4 can be smoothly inserted into the gap between the shell 61 and the battery cell 62. After the battery 6 is installed on the first mounting portion 11, the hanging ear 7 can be installed on the second mounting portion 12, and then the pressing member 2 is tightened so that the pressing member 2 presses the hanging ear 7 on the surface of the shell 61, and then the hanging ear 7 and the shell 61 are welded.

[0052] Optionally, refer to Figure 2 Along the first direction X, the projection of the hanging ear 7 at least partially overlaps with the projection of the insulation board 4 .

[0053] Specifically, when the projection of the hanging ear 7 along the first direction X and the projection of the heat insulation board 4 along the first direction X completely overlap, the area of ​​the hanging ear 7 is the same as the area of ​​the heat insulation board 4, and the heat insulation board 4 can just play an effective supporting and heat insulating role. This situation is an ideal situation, which helps to control the processing cost of the battery hanging ear welding tooling, while ensuring the welding quality of the hanging ear 7 and protecting the safety of the battery cell 62. When the projection of the hanging ear 7 along the first direction X and the projection of the heat insulation board 4 along the first direction X partially overlap, the heat insulation board 4 can only play a supporting and heat insulating role for the overlapping part, and there is still a risk of deformation of the shell 61 or heat transfer to the battery cell 62 in the non-overlapping part, but by reasonably controlling the overlapping area, the risk can be effectively controlled.

[0054] Optionally, refer to Figures 1 to 4 , the base 1 is provided with limiting plates 5 on both sides along the second direction Y, and the limiting plates 5 are used to abut against the shell 61 of the battery 6.

[0055] Specifically, the limit plates 5 are arranged on both sides of the base 1 along the second direction Y. The limit plates 5 and the base 1 can be an integrally formed structure or a structure assembled or welded. The two limit plates 5 are respectively used to abut against the surface of the shell 61. The projections of the two limit plates 5 in the second direction Y can partially overlap or not overlap, and they can both play a limiting role on the battery 6 to prevent the battery 6 from tipping over or overturning.

[0056] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0057] 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 battery hanging ear welding tool, used for welding a hanging ear (7) to a housing (61) of a battery (6), characterized in that: It comprises a base (1) and a pressing member (2); The base (1) has a first direction (X), a second direction (Y) and a third direction (Z) which are perpendicular to each other; the base (1) is provided with a side plate (3) along at least one side of the first direction (X), and the holding member (2) is provided on the side plate (3); The base (1) is provided with a first mounting portion (11) and a second mounting portion (12) arranged along the first direction (X), wherein the second mounting portion (12) is located between the first mounting portion (11) and the side plate (3); The first mounting portion (11) is used to mount the housing (61), and the second mounting portion (12) is used to mount the hanging ear (7); The pressing member (2) moves relative to the base (1) along the first direction (X) to press the hanging ear (7) onto the shell (61).

2. The battery hanging ear welding tool according to claim 1, characterized in that: The side plate (3) is provided with a connection hole (30) which penetrates the side plate (3) along the first direction (X), and the holding piece (2) is passed through the connection hole (30).

3. The battery hanging ear welding tool according to claim 2, characterized in that: The connecting hole (30) is a threaded hole, and the pressing member (2) is a bolt.

4. The battery hanging ear welding tool according to claim 2, characterized in that: There are a plurality of connection holes (30), and the plurality of connection holes (30) are distributed in an array on the side plate (3).

5. The battery hanging ear welding tool according to claim 1, characterized in that: The first mounting portion (11) is provided with a first mounting groove.

6. The battery hanging ear welding tool according to claim 5, characterized in that: The second mounting portion (12) is provided with a second mounting groove, and the groove depth of the second mounting groove along the third direction (Z) does not exceed the groove depth of the first mounting groove along the third direction (Z).

7. The battery hanging ear welding tool according to claim 1, characterized in that: Also includes a heat insulation board (4); The battery (6) further comprises a battery core (62) arranged in the shell (61), and the heat insulation board (4) is arranged on the first mounting portion (11) and extends along the third direction (Z) so as to pass through the shell (61) and the battery core (62).

8. The battery hanging ear welding tool according to claim 7, characterized in that: The first mounting portion (11) is provided with a slot (110) extending along the second direction (Y); the slot (110) is arranged close to the second mounting portion (12); and the heat insulation board (4) is clamped in the slot (110).

9. The battery hanging ear welding tool according to claim 7, characterized in that: Along the first direction (X), the projection of the hanging ear (7) at least partially overlaps with the projection of the heat insulation board (4).

10. The battery hanging ear welding tool according to claim 1, characterized in that: The base (1) is provided with limiting plates (5) on both sides along the second direction (Y), and the limiting plates (5) are used to abut against the shell (61) of the battery (6).

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