Positioning support, positioning tool and battery pack

Abstract

The utility model provides a positioning support, a positioning tool and a battery pack, the positioning support comprises a support frame arranged in a lower shell of the battery pack and a lining arranged on the support frame; a positioning pin is arranged on the high-voltage connector, the high-voltage connector is inserted into the lining through the positioning pin, and the supporting frame is supported at the bottom of the high-voltage connector, so that the high-voltage connector is preassembled on the lower shell of the battery pack; the lining is movably arranged on the supporting frame in the radial direction of the lining so that the high-voltage connector can be movably arranged in the horizontal plane, and the lining is provided with a limiting part for limiting the moving area of the lining. According to the positioning support, the supporting frame and the lining are arranged, the structure is simple, pre-positioning of the high-voltage connector on the lower shell is facilitated, the high-voltage connector is prevented from sinking or inclining, in the falling process of the upper shell, the high-voltage connector can adaptively adjust the position of the high-voltage connector in the horizontal plane along with the upper shell, and therefore the high-voltage connector is not prone to falling off. The assembly is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a positioning bracket. Meanwhile, the utility model also relates to a positioning tool and a battery pack. Background Art

[0002] Power battery packs require high-voltage connectors and low-voltage connectors to interact with the vehicle to achieve high-voltage electric power output and low-voltage electric signal interaction. There are currently two common connector assembly schemes: one is the assembly of the connector and the lower shell. This scheme has a simple assembly process, but it requires a large operating space in the battery pack. In order to ensure the sealing requirements, the upper and lower covers of the battery pack are mostly connected by reliable but non-detachable gluing, bolting, and riveting, which is not convenient for maintenance. The other is the assembly of the connector and the upper shell. This scheme installs the high-voltage circuit part on the outside of the upper shell, which greatly saves the space inside the battery pack, increases the power of the entire pack, and is easy to repair after the electrical components are damaged without damaging the battery pack.

[0003] However, when choosing the solution of assembling the connector with the upper shell, the copper busbar and the high-voltage connector need to be pre-fixed on the lower shell of the battery pack before assembling the upper shell. After the high-voltage connector is pre-installed inside the battery pack, the high-voltage connector may be skewed, resulting in the risk of collision between the connecting column of the high-voltage connector and the upper shell, which can easily damage the electrophoretic paint film inside the upper shell. The generated debris will fall into the battery pack, which will also have an adverse effect on the cleanliness of the pack.

[0004] Although there is a solution in the prior art to set a positioning structure in the battery pack to pre-position the high-voltage connector in the lower shell of the battery pack to prevent the high-voltage connector from being skewed. However, in the process of assembling the upper shell of the battery pack downward, it is also necessary to fine-tune the position of the high-voltage connector to ensure accurate positioning between the high-voltage connector and the upper shell. However, due to the limitations of the existing positioning structure, it is often necessary to manually adjust the position of the high-voltage connector to achieve the positioning and assembly of the high-voltage connector and the upper shell. This makes the assembly operation of the upper shell more complicated and is likely to threaten the personal safety of the operator. In addition, manual operation also has the risk of damaging the sealant between the upper and lower shell flange surfaces, thereby causing sealing failure. Utility Model Content

[0005] In view of this, the utility model aims to provide a positioning bracket to facilitate the pre-positioning of the high-voltage connector on the lower housing and help simplify the assembly operation of the upper housing.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] A positioning bracket, used for pre-installing a high-voltage connector on a lower shell of a battery pack, comprising a support frame arranged in the lower shell of the battery pack, and a bushing arranged on the support frame;

[0008] The high-voltage connector is provided with a positioning pin, which is inserted into the bushing and supports the support frame at the bottom of the high-voltage connector, so that the high-voltage connector is pre-installed on the lower shell of the battery pack;

[0009] The bushing is movably arranged on the support frame along the bushing's own radial direction, so that the high-voltage connector is movably arranged in a horizontal plane, and a limiting portion is provided on the bushing to limit the bushing's movable area.

[0010] Furthermore, the support frame includes a support body connected to the lower shell of the battery pack, and a plurality of mounting parts provided on the support body and used for mounting the bushing.

[0011] Further, the mounting portion includes a mounting plate connected to the supporting body, the mounting plate has a U-shaped cross section and is formed with a mounting groove;

[0012] The bushing is arranged in the installation groove, and through holes for the positioning pin to pass through are arranged on the side walls on both sides of the installation groove.

[0013] Furthermore, the limiting portion includes limiting protrusions which are arranged on side walls on both sides of the installation groove and extend into the installation groove.

[0014] Furthermore, a plurality of the limiting protrusions are distributed at intervals on the peripheral side of the bushing, and the distance between the limiting protrusion and the outer peripheral wall of the bushing is 2 mm-4 mm.

[0015] Furthermore, the support body has a connecting portion for connecting with the lower shell of the battery pack, and extending portions provided at both ends of the connecting portion;

[0016] The mounting portion is disposed at an end portion of the extending portion.

[0017] Furthermore, a guide portion for guiding the positioning pin to be inserted into the bushing is provided at the top of the bushing.

[0018] Compared with the prior art, the utility model has the following advantages:

[0019] The positioning bracket of the utility model has a simple structure by providing a support frame and a bushing, and is conducive to pre-positioning the high-voltage connector on the lower shell to prevent the high-voltage connector from sinking or tilting. In addition, by movably setting the bushing on the support frame, during the falling process of the upper shell, after the connecting column of the high-voltage connector passes through the upper shell, the high-voltage connector can adaptively adjust its position in the horizontal plane following the upper shell, without the need to manually adjust the position of the high-voltage connector, and is easy to assemble.

[0020] In addition, the limiting part includes limiting protrusions arranged on the side walls on both sides of the installation groove and extending into the installation groove, which has a simple structure and is easy to process. In addition, a guide part for guiding the positioning pin to be inserted into the bushing is arranged on the top of the bushing, which facilitates the insertion of the positioning pin into the bushing.

[0021] Another object of the present utility model is to propose a positioning tool for assembling the upper shell of a battery pack and a high-voltage connector, wherein the upper shell is provided with mounting holes corresponding to the connecting columns of the high-voltage connector, and the positioning tool comprises the positioning bracket as described above, and a guide sleeve which is sleeved on the connecting column of the high-voltage connector and extends upward.

[0022] Furthermore, the guide sleeve includes a first part which is sleeved on the outside of the connecting column and is cylindrical, and a second part which is arranged on the top of the first part;

[0023] From bottom to top, the cross-sectional area of ​​the second portion gradually decreases, and the top of the second portion is in an arc shape.

[0024] The positioning fixture of this embodiment is provided with a positioning bracket and a guide sleeve, so that the upper shell and the high-voltage connector can be easily assembled, and the structure is simple and the processing is convenient.

[0025] The utility model also proposes a battery pack, including an upper shell, a lower shell and a high-voltage connector, the high-voltage connector is provided with a positioning pin, the upper shell is provided with a mounting hole corresponding to the connecting column of the high-voltage connector, and the upper shell and the high-voltage connector are assembled using the above-mentioned positioning tooling.

[0026] The battery pack described in the utility model uses the above-mentioned positioning tool to assemble the upper shell and the high-voltage connector, which is beneficial to preventing the high-voltage connector from sinking or tilting, and does not require manual adjustment of the position of the high-voltage connector. The assembly is convenient and it is beneficial to ensure the work safety of employees. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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:

[0028] Figure 1 This is a schematic diagram of the structure of the high-voltage connector according to an embodiment of the utility model being pre-installed on the lower housing through a positioning bracket;

[0029] Figure 2 This is a schematic diagram of the structure of the positioning bracket and the high-voltage connector when they are assembled according to an embodiment of the utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the positioning bracket according to an embodiment of the utility model;

[0031] Figure 4 It is a partial structural schematic diagram of the positioning bracket according to an embodiment of the utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the battery pack during assembly according to an embodiment of the utility model;

[0033] Figure 6 It is a schematic diagram of the internal structure of the bushing described in the embodiment of the utility model.

[0034] Description of reference numerals:

[0035] 1. Support frame; 101. Support body; 1011. Connecting part; 1012. Extending part; 102. Mounting plate; 2. Bushing; 3. High-voltage connector; 301. Connecting column; 302. Positioning pin; 4. Lower shell; 5. Upper shell; 501. Mounting hole; 6. Mounting groove; 7. Limiting protrusion; 8. Guide part; 9. Guide sleeve; 901. First part; 902. Second part. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0037] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0039] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0040] Embodiment 1

[0041] This embodiment relates to a positioning bracket, which is used for pre-installing a high-voltage connector 3 on a lower shell 4 of a battery pack. Figure 1 As shown in , the positioning bracket includes a support frame 1 arranged in the lower shell 4 of the battery pack, and a bushing 2 arranged on the support frame 1. A positioning pin 302 is provided on the high-voltage connector 3, and the positioning pin 302 is inserted into the bushing 2, and the support frame 1 is supported on the bottom of the high-voltage connector 3, so that the high-voltage connector 3 is pre-installed on the lower shell 4 of the battery pack. The bushing 2 is movably arranged on the support frame 1 along the radial direction of the bushing 2 itself, so that the high-voltage connector 3 is movably arranged in the horizontal plane, and a limiting portion is provided on the bushing 2 to limit the movable area of ​​the bushing 2.

[0042] It can be understood that, by making the positioning bracket include the support frame 1 and the bushing 2, the structure is simple, and it is conducive to pre-positioning the high-voltage connector 3 on the lower shell 4, preventing the high-voltage connector 3 from sinking or tilting. And by making the bushing 2 movably set on the support frame 1, so that the high-voltage connector 3 is movably set in the horizontal plane, in the process of the upper shell 5 falling, after the connection column 301 of the high-voltage connector 3 passes through the upper shell 5, the high-voltage connector 3 can follow the upper shell 5 to adaptively adjust its position in the horizontal plane, without the need to manually adjust the position of the high-voltage connector 3, and the assembly is convenient.

[0043] Based on the above overall introduction, as a preferred implementation method, Figure 1 As shown in , the support frame 1 includes a support body 101 connected to the lower shell 4 of the battery pack, and a plurality of mounting portions provided on the support body 101 and used to install the bushing 2. Since the support frame 1 includes the support body 101 and the mounting portion, the structure is simple, and it is easy to install the bushing 2 on the support frame 1. In this embodiment, two mounting portions are provided, and the two bushings 2 are respectively installed on the two mounting portions. Of course, in other embodiments, more mounting portions may be provided, such as three, four, five, etc. The bushing 2 is provided corresponding to the mounting portion.

[0044] As a preferred example, Figure 3 and Figure 4 As shown in, in this embodiment, the mounting portion includes a mounting plate 102 connected to the support body 101, and the cross section of the mounting plate 102 is U-shaped, and a mounting groove 6 is formed. The bushing 2 is arranged in the mounting groove 6, and the side walls on both sides of the mounting groove 6 are provided with through holes for the positioning pin 302 to pass through. In this way, the structure is simple, the processing is convenient, and the assembly of the bushing 2 is easy to achieve. In specific implementation, the distance between the side walls on both sides of the mounting plate 102 can be 3mm-10mm, and it can be specifically 3mm, 4mm, 6mm, 8mm, and 10mm. And in this embodiment, it is preferred that the distance between the side walls on both sides is 6mm, at this time, the height of the bushing 2 can also be 6mm.

[0045] In addition, during implementation, the inner diameter of the bushing 2 can be 0.1 mm-0.3 mm larger than the diameter of the positioning pin 302, such as 0.1 mm, 0.15 mm, 0.2 mm, and 0.3 mm, etc., to facilitate the insertion of the positioning pin 302 into the bushing 2. In addition, the outer diameter of the bushing 2 can be 8 mm-20 mm, specifically 8 mm, 10 mm, 15 mm, and 20 mm, etc. In this implementation, the outer diameter of the bushing 2 is preferably 10 mm.

[0046] As a preferred implementation method, Figure 4 As shown in the figure, in this embodiment, the limiting portion includes limiting protrusions 7 provided on the side walls on both sides of the mounting groove 6 and extending into the mounting groove 6. By providing the limiting protrusions 7, it is easy to limit the active area of ​​the bushing 2, and the structure is simple and the processing is convenient.

[0047] Preferably, in this embodiment, a plurality of limiting protrusions 7 are spaced and distributed around the circumference of the bushing 2, and the distance between the limiting protrusion 7 and the outer peripheral wall of the bushing 2 is 2mm-4mm, which can be specifically 2mm, 3mm, 3.5mm and 4mm, etc. In this embodiment, the distance between each limiting protrusion 7 and the outer peripheral wall of the bushing 2 is preferably 3mm. As shown in the figure, in this embodiment, a total of four limiting protrusions 7 are provided. Of course, in other embodiments, other numbers of limiting protrusions 7 may also be provided, such as three, five, six, etc.

[0048] In addition, in this embodiment, the height of the limiting protrusion 7 can be 0.3mm-2mm, and specifically can be 0.3mm, 0.5mm, 0.6mm, 1mm, 1.5mm and 2mm, etc. In this embodiment, the height of the limiting protrusion 7 is preferably 0.6mm.

[0049] As a preferred implementation method, Figure 3As shown in FIG. 1 , in this embodiment, the support body 101 has a connecting portion 1011 for connecting with the battery pack lower housing 4, and an extending portion 1012 provided at both ends of the connecting portion 1011. The mounting portion is provided at the end of the extending portion 1012. Such a configuration has a simple structure and is convenient for arrangement.

[0050] It should also be noted that the material of the support body 101 in this embodiment can be steel or aluminum, and the support body 101 and the lower shell 4 can be welded. In addition, the support body 101 can also be made of plastic material, and a metal sheet can be embedded on the side where the support body 101 and the lower shell 4 are welded to facilitate the welding connection between the support body 101 and the lower shell 4. In addition, the support body 101 can also be made entirely of plastic material, and the support body 101 and the lower shell 4 can be connected by bolts or rivets.

[0051] Preferably, in this embodiment, a guide portion 8 for guiding the positioning pin 302 to be inserted into the bushing 2 is provided at the top of the bushing 2, so as to facilitate the positioning pin 302 to be inserted into the bushing 2. Figure 6 As shown in FIG. 1 , the guide portion 8 includes a guide surface arranged on the top of the bushing 2 , which has a simple structure and is easy to process.

[0052] The positioning fixture of this embodiment, by making the positioning bracket include the support frame 1 and the bushing 2, is conducive to pre-positioning the high-voltage connector 3 on the lower shell 4, preventing the high-voltage connector 3 from sinking or tilting. In addition, during the falling process of the upper shell 5, the high-voltage connector 3 can follow the upper shell 5 to adaptively adjust its position in the horizontal plane, without manual adjustment of the position of the high-voltage connector 3, and is easy to assemble, which is conducive to ensuring the work safety of employees.

[0053] Embodiment 2

[0054] The present embodiment relates to a positioning tool, which is used for assembling the upper shell 5 of the battery pack with the high-voltage connector, and the upper shell 5 is provided with a mounting hole 501 corresponding to the connecting column 301 of the high-voltage connector 3. In terms of overall structure, the positioning tool includes the positioning bracket in the first embodiment, and a guide sleeve 9 which is sleeved on the connecting column 301 of the high-voltage connector 3 and extends upward. By providing the guide sleeve 9, it can guide the falling of the upper shell 5, which is conducive to assembling the upper shell 5 to the specified position. And in the process of falling of the upper shell 5, the high-voltage connector 3 can be moved in the horizontal plane by driving the guide sleeve 9 to realize automatic position adjustment.

[0055] As a preferred implementation method, Figure 5As shown in , in this embodiment, the guide sleeve 9 includes a first part 901 which is sleeved on the outside of the connecting column 301 and is cylindrical, and a second part 902 which is arranged on the top of the first part 901. From bottom to top, the cross-sectional area of ​​the second part 902 gradually decreases, and the top of the second part 902 is in an arc shape. By gradually decreasing the cross-sectional area of ​​the second part 902 from bottom to top, during the assembly process of the upper shell 5, it is convenient for the top of the second part 902 to pass through the mounting hole 501, and the top of the second part 902 is in an arc shape, which can reduce the damage to the upper shell 5 caused by the collision between the guide sleeve 9 and the upper shell 5.

[0056] The positioning fixture of this embodiment is provided with a positioning bracket and a guide sleeve 9, so that the upper housing 5 and the high-voltage connector 3 can be easily assembled, and the structure is simple and the processing is convenient. In addition, by making the first part 901 and the second part 902, and making the second part 902 in an arc shape, it is convenient for the guide sleeve 9 to pass through the mounting hole 501, and it can reduce the damage to the upper housing 5 caused by the collision between the guide sleeve 9 and the upper housing 5.

[0057] Embodiment 3

[0058] The present embodiment relates to a battery pack, which includes an upper shell 5, a lower shell 4 and a high-voltage connector 3. The high-voltage connector 3 is provided with a positioning pin 302, and the upper shell 5 is provided with a through hole corresponding to the connecting column 301 of the high-voltage connector 3. The positioning tool in Example 2 is used to assemble the upper shell 5 and the high-voltage connector 3.

[0059] In a specific implementation, a bolt hole can be provided on the upper shell 5. After the guide sleeve 9 passes through the mounting hole 501 and the upper shell 5 abuts against the top of the high-voltage connector 3, the high-voltage connector 3 can be assembled on the upper shell 5 by connecting it to the high-voltage connector 3 through the bolt hole.

[0060] The battery pack of this embodiment uses the positioning tool in the second embodiment to assemble the upper shell 5 and the high-voltage connector 3, which helps prevent the high-voltage connector 3 from sinking or tilting, and does not require manual adjustment of the position of the high-voltage connector 3, making assembly convenient and ensuring the work safety of employees.

[0061] 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 positioning bracket for pre-installing a high-voltage connector on a lower housing of a battery pack, characterized in that: It includes a support frame arranged in the lower shell of the battery pack, and a bushing arranged on the support frame; The high-voltage connector is provided with a positioning pin, which is inserted into the bushing and supports the support frame at the bottom of the high-voltage connector, so that the high-voltage connector is pre-installed on the lower shell of the battery pack; The bushing is movably arranged on the support frame along the bushing's own radial direction, so that the high-voltage connector is movably arranged in a horizontal plane, and a limiting portion is provided on the bushing to limit the bushing's movable area.

2. The positioning bracket according to claim 1, characterized in that: The support frame includes a support body connected to the lower shell of the battery pack, and a plurality of mounting parts arranged on the support body and used for mounting the bushing.

3. The positioning bracket according to claim 2, characterized in that: The mounting portion includes a mounting plate connected to the supporting body, wherein the mounting plate has a U-shaped cross section and is formed with a mounting groove; The bushing is arranged in the installation groove, and through holes for the positioning pin to pass through are arranged on the side walls on both sides of the installation groove.

4. The positioning bracket according to claim 3, characterized in that: The limiting portion includes limiting protrusions which are arranged on the side walls at both sides of the installation groove and extend into the installation groove.

5. The positioning bracket according to claim 4, characterized in that: A plurality of the limiting protrusions are distributed at intervals on the peripheral side of the bushing, and the distance between the limiting protrusion and the outer peripheral wall of the bushing is 2 mm-4 mm.

6. The positioning bracket according to claim 3, characterized in that: The support body has a connecting portion for connecting with the lower housing of the battery pack, and extending portions provided at both ends of the connecting portion; The mounting portion is disposed at an end portion of the extending portion.

7. The positioning bracket according to any one of claims 1 to 6, characterized in that: A guide portion for guiding the positioning pin to be inserted into the bushing is provided at the top of the bushing.

8. A positioning tool, used for assembling the upper shell of a battery pack with a high-voltage connector, wherein the upper shell is provided with mounting holes corresponding to the connecting columns of the high-voltage connector, characterized in that: The positioning tool comprises a positioning bracket according to any one of claims 1 to 7, and a guide sleeve which is sleeved on the connecting column of the high-voltage connector and extends upward.

9. The positioning tool according to claim 8, characterized in that: The guide sleeve comprises a first part which is sleeved on the outside of the connecting column and is cylindrical, and a second part which is arranged on the top of the first part; From bottom to top, the cross-sectional area of ​​the second portion gradually decreases, and the top of the second portion is in an arc shape.

10. A battery pack, characterized in that: It comprises an upper shell, a lower shell and a high-voltage connector, wherein the high-voltage connector is provided with a positioning pin, the upper shell is provided with a mounting hole corresponding to the connecting column of the high-voltage connector, and the positioning tool of claim 8 or 9 is used to assemble the upper shell and the high-voltage connector.

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