CN216386558U - Battery module end side plate welding strength test fixture - Google Patents
Battery module end side plate welding strength test fixture Download PDFInfo
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- CN216386558U CN216386558U CN202122812951.7U CN202122812951U CN216386558U CN 216386558 U CN216386558 U CN 216386558U CN 202122812951 U CN202122812951 U CN 202122812951U CN 216386558 U CN216386558 U CN 216386558U
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Abstract
The utility model provides a welding strength test fixture for an end side plate of a battery module, which comprises an upper fixture and a lower fixture, wherein the upper fixture is arranged on the upper portion of the lower fixture; the upper clamp comprises a first supporting piece, a fixing piece and a pressing piece which are fixed in sequence, wherein the fixing piece is used for fixing a side plate of the end, and the pressing piece is used for pressing the side plate of the end; the lower clamp comprises a second supporting piece, two bases are respectively arranged at two ends of the surface of the second supporting piece, and end plates of the end side plates are fixed between the two bases; the upper clamp fixes one end of the side plate at the end of the battery module in a clamping and screwing mode, so that the sliding or the deviation can be avoided during the tension test, and further the stress concentration caused by the deviation is avoided; the mode that lower part anchor clamps accessible pin was inserted soon fixes the end plate of the battery module end curb plate that awaits measuring, and lower part anchor clamps are equipped with the slide rail, and the base of one end can remove, and then can compatible not unidimensional product.
Description
Technical Field
The utility model belongs to the technical field of power battery modules, and particularly relates to a welding strength test fixture for end side plates of a battery module.
Background
Along with the increasing awareness of environmental protection, the power battery module replaces the traditional energy in more and more fields, so that various researches on the power battery module are more and more deep. The existing vehicles mostly adopt fuel oil, the tail gas of the vehicles easily causes environmental pollution, on the other hand, the global energy crisis is also getting more severe, the governments of all countries advocate energy conservation and environmental protection, and under the background of the times, the electric vehicle is produced and is more and more accepted by the public due to the unique advantages. The electric vehicle requires a large current and voltage, and the capacity of a single battery unit is too low in terms of both current and voltage to fully meet market requirements. The current provided by the battery can be increased by connecting a plurality of battery units in parallel, and the voltage provided by the battery can be increased by connecting a plurality of battery units in series, so that the battery module formed by connecting a plurality of battery units in series and in parallel gradually becomes an effective method for solving the market demand of large-capacity batteries.
The traditional power battery module comprises a side plate, an end plate and a lithium ion battery, wherein the lithium ion battery is arranged in a space formed by the side plate and the end plate. In the process of using the power battery module, the power battery module needs to bear working conditions of large mechanical impact, vibration and the like, so that the connection between the end plate and the side plate is required to have high reliability.
At present, the connection method of the end plate and the side plate of the power battery module mainly adopts bolt fastening, laser butt welding (without filler wires) or cold metal transition welding. However, the bolt fastening is not metallurgical bonding, so that the requirement on the dimensional tolerance of a single battery is extremely high, meanwhile, the reliability of the power battery module is poor, the laser butt welding (without filler wires) method has extremely high requirement on the gap between the end plate and the side plate of the power battery module, and the defects of insufficient welding and the like are easily generated in the welding process; the cold metal transition welding method is adopted, so that the welding seam on one side of the side plate or one side of the end plate is easily overhigh; the power battery module is as the basic component module of power battery PACK system, and its structural strength influences end user's personal safety, consequently, is necessary to test the welding strength of battery module end curb plate.
The welding of the end side plates of the battery module is an important component for ensuring the structural strength of the module frame, the welding strength is an important index for judging the welding quality, the evaluation is generally carried out through a tension test, and the objective and accurate measurement of the welding tension is very important. The repeated reproducibility of the measuring system has great influence on the test result and the product process capability result.
The general measuring system comprises a universal testing machine and a matched clamp, the conventional wedge-shaped clamp adopts component force of pulling force to increase friction force for clamping, and the conventional wedge-shaped clamp cannot be completely fixed during installation, so that component force can be applied to clamp the wedge-shaped clamp only in the running process of the equipment, the source of clamping force is unreliable, slippage often occurs, the measurement is unreliable, and further the test fails; in addition, the force and friction of each part under clamping are inconsistent, so that the sliding degree is inconsistent, and the stress of one clamped side is concentrated during a tensile test, so that partial tearing is caused, and the test result is influenced.
Therefore, it is highly desirable to develop a new method for testing the welding strength of the end plates of the battery module, which avoids unstable clamping force or single-side stress concentration, reduces the deterioration of the measurement process, and is compatible with the end plates of the battery module with different sizes through the design of the fixture.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a welding strength test fixture for an end side plate of a battery module, which comprises an upper fixture and a lower fixture; the upper clamp comprises a first supporting piece, a fixing piece and a pressing piece which are fixed in sequence, wherein the fixing piece is used for fixing a side plate of the end, and the pressing piece is used for pressing the side plate of the end; the lower clamp comprises a second supporting piece, two bases are respectively arranged at two ends of the surface of the second supporting piece, and end plates of the end side plates are fixed between the two bases; the upper clamp uses the side plate end of the battery module end side plate fixed in a clamping and screwing mode, and the lower clamp is used for fixing the end plate of the battery module end side plate, so that the sliding or the deviation can be avoided during the tension test, and further the stress concentration caused by the deviation is avoided.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a welding strength test fixture for end side plates of a battery module comprises an upper fixture and a lower fixture; the upper clamp comprises a first supporting piece, a fixing piece and a pressing piece which are fixed in sequence, wherein the fixing piece is used for fixing a side plate of the end, and the pressing piece is used for pressing the side plate of the end; the lower clamp comprises a second supporting piece, two bases are respectively arranged at two ends of the surface of the second supporting piece, and end plates of the end side plates are fixed between the two bases.
The end side plate is a battery module end side plate, the side plate is a solid thin plate, and an irregular through hole structure is formed in the end plate; the upper clamp uses the side plate end of the battery module end side plate fixed in a clamping and screwing mode, and the lower clamp is used for fixing the end plate of the battery module end side plate, so that sliding or deviation is avoided during tension testing, and further stress concentration caused by deviation is avoided.
As an embodiment of the present invention, the fixing member includes a first fixing plate, a second fixing plate, and a pillar, and the first fixing plate and the second fixing plate are connected by the pillar.
As a technical solution of the present invention, the first supporting member is L-shaped, and the first fixing plate is fixed to an inner side surface of the first supporting member, the inner side surface being parallel to the side plate of the end side plate.
As one technical solution of the present invention, the pressing member includes a pressing plate and a pressing bolt, the pressing bolt is disposed on the second fixing plate in a penetrating manner and contacts with the pressing plate, and the pressing plate is pressed toward the first fixing plate by rotating the pressing bolt.
As a technical solution of the present invention, the pressing plate is disposed between the first fixing plate and the second fixing plate, and is sleeved on the pillar.
As a technical scheme of the utility model, a spring is sleeved on the outer layer of the strut between the compression plate and the first fixing plate.
As one technical solution of the present invention, bosses are respectively centrally disposed on opposite sides of the pressing plate and the first fixing plate.
It is worth to be noted that, in the present invention, the boss is of a cubic structure, the width of the boss on the pressing plate is equal to that of the pressing plate, and the width of the boss on the first fixing plate is equal to that of the first fixing plate.
As a technical solution of the present invention, the upper clamp further includes a first connecting member, the first connecting member is disposed on an outer side surface of the first supporting member perpendicular to the side plate of the end side plate, and the upper clamp is detachably connected to an external device through the first connecting member.
As a technical solution of the present invention, a slide rail is disposed on a surface of the second supporting member, and at least one base is slidably fixed in the slide rail, so as to adjust a distance between the two bases.
It is worth mentioning that, in the utility model, the lower clamp can fix the end plate of the end side plate of the battery module to be tested in a manner of quickly inserting the pin, the lower clamp is provided with the slide rail, and the base at one end can move, so that the battery module to be tested can be compatible with products with different sizes.
As an embodiment of the present invention, the lower clamp further includes a second connecting member, the second connecting member is disposed on the second supporting member, and the lower clamp is detachably connected to an external device through the second connecting member.
Illustratively, in the utility model, one end of a side plate of the battery module end side plate is arranged between a first fixing plate and a pressing plate in an upper clamp, and the pressing plate is pressed towards the direction of the first fixing plate by rotating a pressing bolt, so that the side plate is clamped; the end plates of the side plates at the ends of the battery module are arranged between the two bases, the distance between the two bases is adjusted to be just the length of the end plates by adjusting the positions of the bases on the sliding rails, and the end plates are fixed by inserting pins on the bases; the battery module end side plate welding strength test fixture is detachably connected with an external device through a first connecting piece in the upper fixture and a second connecting piece in the lower fixture.
Compared with the prior art, the utility model has the beneficial effects that:
(1) in the welding strength test fixture for the end side plate of the battery module, the upper fixture fixes the side plate of the end side plate of the battery module to be tested in a clamping and screwing mode, so that the sliding or the deviation during the tension test is avoided, further the stress concentration caused by the deviation is avoided, the upper fixture is designed to be left and right avoided, different side plate structures can be compatible, and the cutting operation before the test is avoided;
(2) in the welding strength test fixture for the end side plate of the battery module, the lower fixture can fix the end plate of the end side plate of the battery module to be tested in a manner of quickly inserting the pin, the lower fixture is provided with the slide rail, and the base at one end can move, so that products with different sizes can be compatible;
(3) in the test process of the welding strength test fixture for the side plates of the battery module, the test position is fixed according to the fixture, the tension test direction can be ensured, and the test result deviation caused by inconsistent manual installation positions can be avoided.
Drawings
Fig. 1 is a schematic structural view of a welding strength test fixture for an end side plate of a battery module according to the present invention;
FIG. 2 is a schematic view of the upper clamp of the present invention;
FIG. 3 is a schematic view of the construction of the lower clamp of the present invention;
wherein, 100-upper clamp; 110-a first support; 121-a first fixing plate; 122-a second fixing plate; 123-strut; 131-a pressure strip; 132-hold down bolts; 140-a spring; 150-a first connector; 200-lower clamp; 210-a second support plate; 220-a base; 230-a slide rail; 240-a second connector; 310-side plate of battery module end side plate; 320-end plate of battery module.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
In one embodiment, the present invention provides a battery module end side plate welding strength test jig, as shown in fig. 1 to 3, including an upper jig 100 and a lower jig 200; the upper clamp 100 comprises a first support 110, a fixing member and a pressing member which are fixed in sequence, wherein the fixing member is used for fixing a side plate 310 of a side plate, and the pressing member is used for pressing the side plate 310 of the side plate; the lower clamp 200 includes a second supporting member 210, two bases 220 are respectively disposed at two ends of a surface of the second supporting member 210, and end plates 320 of the end side plates are fixed between the two bases 220.
The end side plate is a battery module end side plate, the side plate is a solid thin plate, and an irregular through hole structure is formed in the end plate; the upper jig 100 fixes the side plates 310 of the battery module end side plates in a clamping and screwing manner, and the lower jig 200 fixes the end plates 320 of the battery module end side plates, thereby preventing sliding or shifting from occurring during a tensile test, and further preventing stress concentration due to shifting.
Further, the fixing member includes a first fixing plate 121, a second fixing plate 122, and a support post 123, and the first fixing plate 121 and the second fixing plate 122 are connected by the support post 123.
Further, the first support 110 is L-shaped, and the first fixing plate 121 is fixed to an inner side surface of the first support 110 parallel to the side plate 310 of the end side plate.
Further, the pressing member includes a pressing plate 131 and a pressing bolt 132, the pressing bolt 132 is penetratingly disposed on the second fixing plate 122 and contacts with the pressing plate 131, and the pressing plate 131 is pressed toward the first fixing plate 121 by rotating the pressing bolt 132.
Further, the pressing plate 131 is disposed between the first fixing plate 121 and the second fixing plate 122, and is sleeved on the supporting column 123.
Further, a spring 140 is sleeved on the support post 123 between the pressing plate 131 and the first fixing plate 121.
Further, bosses are centrally provided on opposite sides of the pressing plate 131 and the first fixing plate 121, respectively.
It should be noted that, in the present invention, the boss is a cube structure, the width of the boss on the pressing plate 131 is equal to that of the pressing plate 131, and the width of the boss on the first fixing plate 121 is equal to that of the first fixing plate 121.
Further, the upper clamp 100 further includes a first connecting member 150, the first connecting member 150 is disposed on an outer side surface of the first support 110 perpendicular to the side plate 310 of the end side plate, and the upper clamp 100 is detachably connected to an external device through the first connecting member 150.
Further, the surface of the second supporting member 210 is provided with a sliding rail 230, and at least one base 220 is slidably fixed in the sliding rail 230, so as to adjust the distance between the two bases 220.
It should be noted that, in the present invention, the lower fixture 200 can fix the end plate 320 of the side plate of the battery module to be tested by inserting the pins, and the lower fixture 200 is provided with the slide rail 230, and the base 220 at one end can move, so that the present invention can be compatible with products with different sizes.
Further, the lower clamp 200 further includes a second connector 240, the second connector 240 is disposed on the second support 210, and the lower clamp 200 is detachably connected to an external device through the second connector 240.
Illustratively, in the present invention, one end of the side plate 310 of the battery module end side plate is placed between the first fixing plate 121 and the pressing plate 131 in the upper jig 100, and the pressing plate 131 is pressed in the direction of the first fixing plate 121 by rotating the pressing bolt 132, thereby clamping the side plate 310; the end plates 320 of the end side plates of the battery module are arranged between the two bases 220, the distance between the two bases 220 is adjusted to be just the length of the end plates by adjusting the positions of the bases 220 on the sliding rails 230, and the end plates are inserted on the bases 220 by pins so as to be fixed; the battery module end side plate welding strength test jig is detachably connected with an external device through the first connection member 150 in the upper jig 100 and the second connection member 240 in the lower jig 200.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. The clamp for testing the welding strength of the end side plate of the battery module is characterized by comprising an upper clamp and a lower clamp; the upper clamp comprises a first supporting piece, a fixing piece and a pressing piece which are fixed in sequence, wherein the fixing piece is used for fixing a side plate of the end, and the pressing piece is used for pressing the side plate of the end; the lower clamp comprises a second supporting piece, two bases are respectively arranged at two ends of the surface of the second supporting piece, and end plates of the end side plates are fixed between the two bases.
2. The jig for testing the welding strength of the end plates of the battery module according to claim 1, wherein the fixing member comprises a first fixing plate, a second fixing plate and a support post, and the first fixing plate and the second fixing plate are connected by the support post.
3. The jig for testing the welding strength of the end plates of the battery module according to claim 2, wherein the first supporting member is L-shaped, and the first fixing plate is fixed to an inner side surface of the first supporting member, the inner side surface being parallel to the side plates of the end plates.
4. The fixture for testing the welding strength of the end side plates of the battery module according to claim 2, wherein the pressing member comprises a pressing plate and a pressing bolt, the pressing bolt is penetratingly disposed on the second fixing plate and contacts with the pressing plate, and the pressing plate is pressed toward the first fixing plate by rotating the pressing bolt.
5. The jig for testing the welding strength of the end side plates of the battery module according to claim 4, wherein the compression plate is disposed between the first fixing plate and the second fixing plate and sleeved on the support.
6. The jig for testing the welding strength of the end plates of the battery module according to claim 4, wherein a spring is sleeved on the outer layer of the support column between the pressing plate and the first fixing plate.
7. The battery module end side plate welding strength test fixture according to claim 4, wherein a boss is centrally provided on each of opposite sides of the pressing plate and the first fixing plate.
8. The battery module end side plate welding strength test fixture according to claim 1, wherein the upper fixture further comprises a first connecting member disposed on an outer side surface of the first support member perpendicular to the side plate of the end side plate, and the upper fixture is detachably connected to an external device through the first connecting member.
9. The jig for testing the welding strength of the end side plates of the battery module as claimed in claim 1, wherein the second supporting member has a surface formed with a sliding rail, and at least one base is slidably fixed in the sliding rail, so as to adjust the distance between the two bases.
10. The battery module end side plate welding strength test jig according to claim 1, wherein the lower jig further comprises a second connecting member provided on the second support member, the lower jig being detachably connected to an external device through the second connecting member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122812951.7U CN216386558U (en) | 2021-11-17 | 2021-11-17 | Battery module end side plate welding strength test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122812951.7U CN216386558U (en) | 2021-11-17 | 2021-11-17 | Battery module end side plate welding strength test fixture |
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| Publication Number | Publication Date |
|---|---|
| CN216386558U true CN216386558U (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122812951.7U Active CN216386558U (en) | 2021-11-17 | 2021-11-17 | Battery module end side plate welding strength test fixture |
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| CN (1) | CN216386558U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102584213B1 (en) * | 2023-05-25 | 2023-10-05 | 인성기공(주) | Welding inspection equipment for inspecting assembly defects of battery clamps |
-
2021
- 2021-11-17 CN CN202122812951.7U patent/CN216386558U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102584213B1 (en) * | 2023-05-25 | 2023-10-05 | 인성기공(주) | Welding inspection equipment for inspecting assembly defects of battery clamps |
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