CN218334150U

CN218334150U - Buckle device, end plate assembly and battery module

Info

Publication number: CN218334150U
Application number: CN202222447898.XU
Authority: CN
Inventors: 黄红光; 李德壮; 华超; 曾勇
Original assignee: GAC Aion New Energy Automobile Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2023-01-17
Anticipated expiration: 2032-09-15

Abstract

The application relates to the technical field of battery module protection, and provides a clamping device, an end plate assembly and a battery module, which mainly comprise a base and a base cover; a first mounting cavity is formed in the end part, facing the base cover, of the base, and fastening structures are arranged on the inner wall surfaces of two ends of the first mounting cavity; the base cover faces the end portion of the base, a second installation cavity is formed in the end portion of the base, clamping strip structures are arranged on the inner wall surfaces of two ends of the second installation cavity, and the clamping strip structures can be clamped with the buckle structures along with the base cover installed on the base. This application can effectively avoid in the conventional art, in the use or the equipment process of battery module, to pressing the unexpected touching of the joint spare of forms such as shell fragment and the emergence of the circumstances such as joint spare fracture that causes for buckle device's use can be more safe, reliable, is convenient for prolong the life of base cover.

Description

Buckle device, end plate assembly and battery module

Technical Field

The application relates to the technical field of battery module protection, particularly, relate to a buckle device, end plate subassembly and battery module.

Background

In the power assembled battery, generally, the battery module is connected in series with the battery module through a high-voltage copper bar so as to achieve the electric properties of voltage, current, power and the like required by the whole vehicle. The high-voltage copper bar is in threaded connection with the positive and negative high-voltage output electrodes of the battery module. In daily use, in order to prevent dangers such as short circuit and electric shock caused by workers in the operation process, the positive and negative high-voltage output electrodes are placed on a high-voltage output base and are covered by a high-voltage output base cover.

However, in the actual using process, the inventor finds that, in the high-voltage output base device existing in the market at present, a groove is usually arranged on the base, a pressing elastic sheet is arranged on the base cover, and the pressing elastic sheet and a clamping point in the groove are used for clamping connection; and press the shell fragment and for exposed setting after the installation for in the assembly process of battery module, the base lid that the mistake that appears pressing the shell fragment touches and bumps and arouses pops out and presses the shell fragment phenomenon such as fracture easily.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned shortcoming on the prior art, the utility model aims at providing a buckle device, end plate subassembly and battery module can effectively ensure the reliability of buckle device in the use, improves the safety protection performance.

The technical means adopted by the application to solve the technical defects are as follows:

the application provides a buckle device, which comprises a base and a base cover; a first mounting cavity is formed in the end part, facing the base cover, of the base, and fastening structures are arranged on the inner wall surfaces of two ends of the first mounting cavity; the base cover faces the end portion of the base, a second installation cavity is formed in the end portion of the base, clamping strip structures are arranged on the inner wall surfaces of two ends of the second installation cavity, and the clamping strip structures can be clamped with the buckle structures along with the base cover installed on the base.

In above-mentioned realization process, this application is provided with buckle structure ingeniously on the internal face of base, sets up the card strip structure that matches with this buckle structure simultaneously on the internal face of base lid to make when the base lid is installed on the base, card strip structure is connected for the inside realization joint at first installation cavity with buckle structure. Thereby can effectively avoid in the conventional art, in the use or the equipment process of battery module, to pressing the unexpected touching of the joint spare of forms such as shell fragment and the emergence of the circumstances such as joint spare fracture that causes for buckle device's use can be more safe, reliable, is convenient for prolong the life of base cover.

Further, the buckle structure comprises a first abutting surface arranged back to the base cover; the clamping strip structure comprises a clamping strip body, one end of the clamping strip body is connected with the inner wall surface of the base cover, the other end of the clamping strip body extends towards the base, a bent hook portion is arranged at the tail end of the extending clamping strip body, and a second abutting surface used for being connected with the first abutting surface in a clamped mode is arranged on the bent hook portion.

In the implementation process, the surfaces of the first abutting surface and the second abutting surface are abutted with each other, so that the stress state between the clamping strip structure and the clamping structure under clamping connection is more stable, and the installation reliability of the base cover on the base is ensured.

Further, an included angle formed between the first abutting surface and/or the second abutting surface and the vertical direction is 95-135 degrees.

In the implementation process, the first abutting surface and/or the second abutting surface are/is arranged in an inclined mode, so that the operation can be more convenient when the abutting state between the first contact surface and the second contact surface is relieved.

Furthermore, the outer side surfaces of the two ends of the base cover are concavely provided with limiting grooves, and the base is convexly provided with limiting blocks matched with the limiting grooves towards the base cover.

In the above-mentioned implementation process, through spacing groove and the stopper that sets up, can play the effect of guide installation when the base lid is covered and is closed the operation to in the installation normal position of base lid, simultaneously, also can play and carry out relative spacing effect between base lid and the base under the installation, avoid unexpected touching to cause the relative displacement between base lid and the base, and buckle structure and card strip structure are as main stress point when avoiding unexpected touching.

Furthermore, along the vertical direction, the height of the limit groove is smaller than half of the height of the side plate of the base cover.

In the implementation process, the height of the limit groove and the height of the side plate of the base cover are limited, so that the plane structure reserved on the side plate can be larger than the occupied area of the limit groove, when the clamping state between the base cover and the base is required to be released, the side plate is only required to be pressed, and the pressing hand feeling is better.

Further, the card strip body sets up on the tank bottom of spacing groove, just card strip body, spacing groove and base lid formula structure as an organic whole shaping.

In the implementation process, the clamping strip body, the limiting groove and the base cover are arranged in an integrated structure, so that the clamping strip body and the base cover are better in stress performance.

Furthermore, the base and/or the two side walls of the base cover are provided with notches for the connection wires to pass through.

In the implementation process, the subsequent wiring operation of an operator can be facilitated through the arranged notch part.

There is provided an end plate assembly in this application, including end plate body, the last third installation cavity that is provided with of end plate body, detachably is provided with more than in the third installation cavity a buckle device.

In the above-mentioned realization process, through installing buckle device in this application on the end plate body, can realize the supporting use between buckle device and the end plate body to be convenient for buckle device is connected in the erection on battery module.

The side wall of the end plate body is provided with a countersunk hole, and the buckle device is provided with a mounting hole corresponding to the countersunk hole; the countersunk head bolt penetrates through the countersunk head hole and then is connected and arranged on the mounting hole, and the setting length of the nut section of the countersunk head bolt is not more than that of the countersunk head section of the countersunk head hole.

In the implementation process, the fixing of the buckle device in the third mounting cavity can be realized through the arranged countersunk head bolt; simultaneously, when under the installation state, the nut end of countersunk head bolt can not the protrusion setting be in the side of end plate body to avoid taking up battery package space and causing the interference to other structures behind the countersunk head bolt installation.

The application also provides a battery module which comprises a module body, a lead terminal arranged on the module body and the end plate component; the end plate assembly is arranged on the module body, and the lead terminal is connected with the buckling device and is positioned between the base and the base cover.

In the implementation process, the end plate assembly provided by the application is applied to the battery module, so that the protection of the lead terminal after installation can be safer and more reliable; meanwhile, when the lead terminal is required to be installed and connected, the disassembling operation between the base cover and the base can be more convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic structural view of the fastening device of the present application.

Fig. 2 is a schematic view of an installation structure of the base and the base cover according to the present application.

Fig. 3 is a schematic structural diagram of a base cover according to the present application.

Fig. 4 is a schematic cross-sectional view of the base and the base cover after being mounted.

Fig. 5 is a schematic cross-sectional view of the base and the base cover before being mounted.

Fig. 6 is a schematic structural view of an end plate body according to the present application.

Fig. 7 is a schematic cross-sectional view of the end plate body mounting cavity according to the present application.

Fig. 8 is a schematic view illustrating a disassembled structure of the battery module according to the present application.

Fig. 9 is a schematic structural view of the battery module in the mounted state according to the present application.

Description of the labeling:

1-a base, 11-a first mounting cavity, 12-a buckle structure, 121-a first abutting surface, 13-a notch part and 14-a limiting block;

2-a base cover, 21-a second mounting cavity, 22-a clamping strip structure, 221-a bent hook part, 222-a second contact surface and 23-a limiting groove;

3-end plate body, 31-third mounting cavity, 311-limiting rib and 32-countersunk head bolt;

4-module body, 41-lead terminal.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a detailed description of the present invention will be made with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, and the embodiments described are merely some, but not all embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It should be noted that: unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not construed as indicating or implying relative importance.

As shown in fig. 1 to 9, the present embodiment provides a fastening device, which includes a base 1 and a base cover 2 that are used in cooperation with each other.

Preferably, a first mounting cavity 11 is provided at an end portion of the base 1 facing the base cover 2, a top portion of the first mounting cavity 11 is provided as an opening, and fastening structures 12 are provided on inner wall surfaces of two ends of the first mounting cavity 11. A second mounting cavity 21 is formed in the end portion, facing the base 1, of the base cover 2, the bottom of the second mounting cavity 21 is provided with an opening, and clamping strip structures 22 are arranged on the inner wall surfaces of two ends of the second mounting cavity 21. Therefore, when the base cover 2 is mounted on the base 1, the first mounting cavity 11 and the second mounting cavity 21 form a complete mounting cavity, and the clamping bar structure 22 is connected with the buckle structure 12 in a clamping manner along with the mounting of the base cover 2 on the base 1.

In this application, be provided with buckle structure 12 on base 1's internal face ingeniously, be provided with the card strip structure 22 that matches with this buckle structure 12 simultaneously on base lid 2's internal face to when making when base lid 2 installs on base 1, card strip structure 22 is connected for the inside realization joint at the installation cavity with buckle structure 12. Thereby can effectively avoid in the conventional art, in the use or the equipment process of battery module, to pressing the unexpected touching of the joint spare of forms such as shell fragment and the emergence of the circumstances such as joint spare fracture that causes for buckle device's use can be more safe, reliable, is convenient for prolong the life of base cover 2.

Further, in this embodiment, two side walls of the base 1 and/or the base cover 2 are provided with a notch portion 13 for a connection wire to pass through; the notch part 13 is arranged, so that the subsequent wiring operation of an operator can be facilitated.

As an example of an application, the notch 13 may be formed by providing notches only on both side walls of the first mounting chamber 11 and then covering and mounting the base cover 2 on the base 1.

As an application example, the notch portion 13 may be formed by providing notches only on both side walls of the second mounting cavity 21 and then mounting the base cover 2 on the base 1 in a covering manner.

As an application example of the above, the first mounting chamber 11 and the second mounting chamber 21 may be provided with notches on both side walls thereof, and the notch 13 may be formed after the base cover 2 is attached to the base 1 by being closed.

Further, in the present embodiment, a first abutting surface 121 is disposed on the fastening structure 12, and the first abutting surface 121 is disposed opposite to the base cover 2. The first abutting surface 121 may be formed by providing a protrusion on an inner wall surface of the first mounting cavity 11, or by providing a groove on an inner wall surface, or by forming a stepped structure on an inner wall surface, and the like, and is not limited in this respect.

The clip strip structure 22 includes a clip strip body, one end of the clip strip body is connected to the inner wall surface of the base cover 2, the other end of the clip strip body extends toward the base 1, a bent hook portion 221 is disposed at the end of the clip strip body extending, and a second abutting surface 222 for being connected with the first abutting surface 121 in a snap-fit manner is disposed on the bent hook portion 221. Through the mutual abutting contact between the surfaces of the first abutting surface 121 and the second abutting surface 222, the stressed state between the clamping strip structure 22 and the clamping structure 12 under the clamping connection is more stable, so as to ensure the installation reliability of the base cover 2 on the base 1.

Preferably, in the present embodiment, an included angle between the first abutting surface 121 and/or the second abutting surface 222 and the vertical direction is between 95 ° and 135 °, for example, the included angle between the first abutting surface 121 and the vertical direction and the included angle between the second abutting surface 222 and the vertical direction are set to be 100 °. In particular practice, the inventors have found that when the included angle is set to be less than 95 °, although the abutting connection between the first abutting surface 121 and the second abutting surface 222 is more stable, it becomes difficult to release the clamping state therebetween; when the included angle is set to be larger than 135 °, it is convenient to contact the clamped state, but in some examples, the first abutting surface 121 and the second abutting surface 222 are separated from each other. Therefore, the first abutting surface 121 and the second abutting surface 222 are arranged in an inclined manner, and the inclined included angle is set between 95 degrees and 135 degrees, so that the stable connection between the first contact surface 121 and the second contact surface 222 in the clamping connection state can be met, and the operation in the releasing of the abutting state between the first contact surface 121 and the second contact surface 222 can be more convenient.

In addition, in this application, be the indent on the lateral surface at the both ends of base lid 2 and be provided with spacing groove 23, and on base 1 towards base lid 2 is convexly provided with spacing groove 23 matched with stopper 14. Through the limiting groove 23 and the limiting block 14, when the base cover 2 is covered and closed, the limiting groove 23 is connected with the limiting block 14, so that the effect of guiding installation can be achieved, and the base cover 2 can be installed on the base 1 in a correct position. Meanwhile, after the limiting groove 23 and the limiting block 14 are installed, the effect of relatively limiting the position between the base cover 2 and the base 1 in the installation state can be achieved, the relative displacement between the base cover 2 and the base 1 caused by accidental touch is avoided, the use safety of the fastening device is further ensured, and meanwhile, the fastening structure 12 and the clamping strip structure 22 in the abutting state can be prevented from being used as main stress points during accidental touch, so that the damage risk of the fastening structure is reduced.

Further, as a preferable scheme, in the present embodiment, in the vertical direction, the opening height of the limiting groove 23 is less than half of the setting height of the side plate of the base cover 2. The limit on the proportion is set through the height of setting up the curb plate of highly and base lid 2 of seting up to spacing groove 23 for the planar structure who reserves on the curb plate can be greater than the area occupied of spacing groove 23, makes when the joint state between base lid 2 and the base 1 is relieved to needs, only need press on the curb plate can. Here, set up spacing groove 23 is equivalent to the strengthening rib structure in fact, can improve base lid 2's intensity, when seting up highly great of spacing groove 23, will realize pressing down to the curb plate then can be more hard, therefore the proportion restriction that sets up in this embodiment can be so that when removing the joint state between base lid 2 and the base 1, the area of pressing is bigger relatively and more laborsaving, and the feeling of pressing is better.

Furthermore, in the present embodiment, the clip strip body is disposed on the bottom of the limiting groove 23, so that a gap is formed between the clip strip body and the side plate of the base cover 2, so as to facilitate the design of the limiting groove 23; in this case, the first contact surface 121 is preferably formed by providing a bump.

As a preferable scheme, in this embodiment, the clip strip body, the limiting groove 23 and the base cover 2 are formed in an integrated structure, and the clip strip body, the limiting groove 23 and the base cover 2 are integrated, so that the clip strip body and the base cover 2 have better stress performance.

In addition, the utility model provides an end plate subassembly mainly includes end plate body 3 be provided with third installation cavity 31 on end plate body 3, and then detachably be provided with above a buckle device in third installation cavity 31. Install on end plate body 3 through the buckle device with in this application, can realize the supporting use between buckle device and the end plate body 3 to be convenient for buckle device is the erection joint on battery module.

Further, in this embodiment, a countersunk bolt 32 is further disposed on the end plate assembly, a countersunk hole for mounting the countersunk bolt 32 is disposed on the side wall of the end plate body 3, and a mounting hole corresponding to the countersunk hole is disposed on the fastening device. The countersunk head bolt 32 penetrates through the countersunk hole and then is connected and arranged on the mounting hole, and the fastening device can be fixedly mounted in the third mounting cavity 31 through the arranged countersunk head bolt 32.

As a preferable scheme, in this embodiment, the size of the inner cavity of the third mounting cavity 31 is set to be larger than the external size of the base 1, and meanwhile, a limiting rib 311 is further disposed in the third mounting cavity 31, so as to facilitate limiting mounting of the base 1 and ensure mounting and fixing of the base 1. In addition, when the base 1 with a slightly larger overall dimension is encountered, the limiting rib 311 can be trimmed to realize the installation of the base 1 in the third installation cavity 31, so as to avoid the situation that the base 1 cannot be installed on the end plate body 3 due to machining dimension errors.

Further, in this embodiment, the length that sets up of the nut section of countersunk head bolt 32 is not more than the length that sets up of the counter bore section of counter bore for when under the mounted state, the nut end of countersunk head bolt 32 can not the protrusion setting be in outside the side of end plate body 3, thereby avoid taking up and causing the interference to other structures the battery package space behind the countersunk head bolt 32 installation.

In addition, the present application also provides a battery module, which includes a module body 4, lead terminals 41 disposed on the module body 4, and an end plate assembly as described above; the end plate assembly is installed on the module body 4, and the lead terminal 41 is connected with the fastening device and is located between the base 1 and the base cover 2. By applying the end plate assembly provided by the application to the battery module, the protection of the lead terminal 41 after installation can be safer and more reliable; meanwhile, when the mounting and connecting operation of the lead terminals 41 is required, the disassembling operation between the base cover 2 and the base 1 can be more convenient.

The above description is only a specific embodiment of the present application, and is not intended to limit the scope of the present application, and it is obvious to those skilled in the art that various modifications and variations can be made in the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. Any person skilled in the art can easily think of changes or substitutions in the technical scope disclosed in the present application, and shall also cover the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

Claims

1. A buckle device is characterized by comprising a base and a base cover;

a first mounting cavity is formed in the end part, facing the base cover, of the base, and fastening structures are arranged on the inner wall surfaces of two ends of the first mounting cavity;

the base cover faces the end portion of the base, a second installation cavity is formed in the end portion of the base, clamping strip structures are arranged on the inner wall surfaces of two ends of the second installation cavity, and the clamping strip structures can be clamped with the buckle structures along with the base cover installed on the base.

2. The buckle device according to claim 1, wherein the buckle structure comprises a first abutment surface disposed away from the base cover;

the clamping strip structure comprises a clamping strip body, one end of the clamping strip body is connected with the inner wall surface of the base cover, the other end of the clamping strip body extends towards the base, a bent hook portion is arranged at the tail end of the extending clamping strip body, and a second abutting surface used for being connected with the first abutting surface in a clamped mode is arranged on the bent hook portion.

3. The buckle device according to claim 2, wherein the first abutment surface and/or the second abutment surface forms an angle of between 95 ° and 135 ° with the vertical direction.

4. The buckle device according to any one of claims 2 to 3, wherein a limiting groove is concavely formed on the outer side surfaces of the two ends of the base cover, and a limiting block matched with the limiting groove is convexly arranged on the base towards the base cover.

5. The buckle device according to claim 4, wherein the opening height of the limiting groove is smaller than half of the setting height of the side plate of the base cover in the vertical direction.

6. The buckle device according to claim 5, wherein the clip strip body is disposed on a bottom of the limiting groove, and the clip strip body, the limiting groove and the base cover are formed as a single structure.

7. The buckle device according to claim 1 or 6, wherein a notch portion for passing a wiring is reserved on two side walls of the base and/or the base cover.

8. An end plate assembly comprising an end plate body having a third mounting cavity formed therein, the third mounting cavity having a snap-fit arrangement as claimed in any one of claims 1 to 7 removably disposed therein.

9. The end plate assembly according to claim 8, further comprising a countersunk bolt, wherein a countersunk hole is formed in the side wall of the end plate body, and a mounting hole corresponding to the countersunk hole is formed in the fastening device;

the countersunk head bolt penetrates through the countersunk head hole and then is connected and arranged on the mounting hole, and the setting length of the nut section of the countersunk head bolt is not more than that of the countersunk head section of the countersunk head hole.

10. A battery module comprising a module body, lead terminals provided on the module body, and an end plate assembly according to claim 8 or 9 above;

the end plate assembly is arranged on the module body, and the lead terminal is connected with the buckling device and is positioned between the base and the base cover.