Output pole base and battery pack

Abstract

The utility model provides an output electrode base and a battery pack. The output electrode base comprises a base body and a fastening nut restrained on the base body, the base body is provided with an upper end face and a mounting hole, and the mounting hole penetrates through the upper end face. The fastening nut is restrained in the mounting hole, and the fastening nut is provided with a movable gap a in the axial direction of the fastening nut in the mounting hole. According to the output pole base of the utility model, the fastening nut is arranged to be restrained in the mounting hole of the base body, and the fastening nut is enabled to have the moving gap along the axial direction of the fastening nut in the mounting hole, so that upward or downward deformation of the busbar output pole can be effectively prevented, and the reliability of electric connection can be ensured; and a good use effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to an output pole base. The utility model also relates to a battery pack provided with the output pole base. Background Art

[0002] At present, the module output pole base in the battery pack is divided into a positive output pole base and a negative output pole base. The two output pole bases are symmetrical structures, which is not only not conducive to employee distinction, logistics management and actual assembly, but also the two output pole bases require two sets of molds, increasing manufacturing costs. Utility Model Content

[0003] In view of this, the utility model aims to provide an output pole base to effectively prevent the output pole of the busbar from deforming upward or downward, thereby ensuring the reliability of the electrical connection.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] An output pole base comprises a base body and a fastening nut constrained on the base body;

[0006] The base body has an upper end surface and a mounting hole, and the mounting hole passes through the upper end surface;

[0007] The fastening nut is constrained in the mounting hole, and the fastening nut has a movable gap a along its own axial direction in the mounting hole.

[0008] Furthermore, the upper end surface is provided with a plurality of corner connecting blocks, and the plurality of corner connecting blocks are arranged along the circumference of the upper end surface, and a protective baffle is provided between two adjacent corner connecting blocks, and each protective baffle is connected to two adjacent corner connecting blocks and / or each protective baffle is connected to the upper end surface via a weak connecting portion, and each protective baffle can be separated from the base body by breaking the weak connecting portion.

[0009] Furthermore, the weak connection portion includes a first connection rib connecting the protective baffle and the corner connection block, and / or the weak connection portion includes a second connection rib connecting the protective baffle and the upper end surface.

[0010] Furthermore, the first connecting rib has a first end face connected to the corner connecting block, and a second end face connected to the protective baffle, and the area of ​​the first end face is smaller than the area of ​​the second end face; and / or the second connecting rib has a third end face connected to the upper end face, and a fourth end face connected to the protective baffle, and the area of ​​the third end face is smaller than the area of ​​the fourth end face.

[0011] Furthermore, a dimension H1 of the first connecting rib in the height direction of the base body satisfies: 1mm≤H1≤2mm, a dimension H2 of the second connecting rib in the length direction of the protective baffle satisfies: 1mm≤H2≤2mm; and / or a distance L1 between the protective baffle and the corresponding corner connecting block satisfies: 1mm≤L1≤2mm, a distance L2 between the protective baffle and the upper end surface satisfies: 1mm≤L2≤2mm.

[0012] Furthermore, the fastening nut is constrained in the mounting hole by a bearing plate clamped on the base body, the fastening nut abuts against the bearing plate, and one end of the fastening nut is exposed on the upper end surface.

[0013] Furthermore, the mounting hole has a first hole section and a second hole section that are connected, and the cross-sectional area of ​​the second hole section is larger than the cross-sectional area of ​​the first hole section; the fastening nut has a first section and a second section that are connected along its own axial direction, the first section is passed through the first hole section, the second section is located in the second hole section, and when the second section abuts against the bearing plate, the upper end face of the second section is spaced a certain distance a from the upper end of the second hole section.

[0014] Furthermore, the outer contour of the cross section of the first section is circular, the outer contour of the cross section of the second section is hexagonal, and the outer diameter of the first section is smaller than the distance between two opposite planes on the outer peripheral wall of the second section.

[0015] Furthermore, the supporting plate is inserted into the insertion hole on the base body, and elastic arms are provided on both sides of the width direction of the supporting plate, and the distance between the two elastic arms is greater than the length of the insertion hole; after the supporting plate is inserted into the insertion hole, the supporting plate is clamped in the insertion hole by the two elastic arms.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The output pole base described in the utility model is constrained in the mounting hole of the base body by arranging a fastening nut, and the fastening nut has an axial movable gap a in the mounting hole, which can effectively prevent the output pole of the busbar from deforming upward or downward, thereby ensuring the reliability of the electrical connection and having a good use effect.

[0018] In addition, multiple corner connecting blocks and multiple protective baffles are provided, and the protective baffles are connected to the corner connecting blocks via a weak connecting portion, and the protective baffles are also connected to the upper end surface via a weak connecting portion, so that the weak connecting portion is broken under the action of external force, so that the corresponding protective baffles are separated from the base body and an installation port is formed, thereby facilitating the electrical connection of the bus output pole or the high-voltage copper busbar with the fastening nut through the installation port.

[0019] Moreover, according to the actual installation requirements of the bus output pole or the high-voltage copper busbar, the protective baffles at the corresponding parts can be broken off from the base body to meet different installation requirements, which can improve the versatility of the output pole base, not only saving mold opening costs, but also facilitating employee assembly and logistics management. At the same time, the unbroken protective baffles can also play a protective role and improve the safety of use.

[0020] Secondly, the weak connection part adopts the structural form of the first connecting rib and the second connecting rib, which has a simple structure and is easy to process and prepare. The area of ​​the first end face on the first connecting rib is smaller than the area of ​​the second end face, so that a smaller force can be used to separate the protective baffle from the corner connecting block, making the installation of the bus output pole or the high-voltage copper bus easier and more labor-saving. The area of ​​the third end face on the second connecting rib is smaller than the area of ​​the fourth end face, and a smaller force can also be used to break the protective baffle off from the upper end face. Moreover, the cooperation of the first connecting rib and the second connecting rib can further facilitate the breaking and separation of the protective baffle from the output pole base, and the operation is convenient and labor-saving.

[0021] Furthermore, the size of the first connecting rib and the second connecting rib can not only ensure the connection strength of the protective baffle due to too small size, but also prevent the protective baffle from being broken due to too large size. The supporting plate can better constrain the fastening nut in the mounting hole, and one end of the fastening nut is exposed on the upper end surface, so as to ensure the reliability of the electrical connection between the busbar output pole or the high-voltage copper busbar and the fastening nut.

[0022] In addition, the top surface of the second section is set to be spaced a certain distance from the top of the second hole section, so that the fastening nut has room for movement along its own axial direction, and can prevent the upward or downward deformation of the busbar output pole. The structure of the fastening nut cooperates with the mounting hole, which can facilitate its constraint on the output pole base, and the hexagonal profile of the second section and the second hole section cooperates to prevent the fastening nut from rotating relative to the output pole base, which is conducive to the screw connection and fixation of the busbar output pole or the high-voltage copper busbar. The carrier plate is clamped in the insertion hole by the elastic arm, which has the characteristics of simple structure and easy operation.

[0023] Another object of the present invention is to provide a battery pack, in which the above-mentioned output pole base is provided.

[0024] The battery pack of the utility model, by adopting the output pole base as described above, can break off the protective baffle at the corresponding position from the base body according to the actual installation requirements of the bus output pole or the high-voltage copper bus, so as to achieve different installation requirements, thereby improving the versatility of the output pole base and facilitating the universal assembly of the positive and negative output pole bases, and also having a good protective effect to ensure safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 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:

[0026] Figure 1 It is a structural schematic diagram of the output pole base according to an embodiment of the utility model from a first viewing angle;

[0027] Figure 2 A schematic structural diagram of the output pole base according to an embodiment of the utility model from a second viewing angle;

[0028] Figure 3 A top view of the output pole base according to an embodiment of the utility model;

[0029] Figure 4 for Figure 3 Section view from the middle AA direction;

[0030] Figure 5 It is a partial enlarged view of the output pole base described in the embodiment of the utility model;

[0031] Figure 6 This is a structural schematic diagram of the fastening nut according to an embodiment of the utility model;

[0032] Figure 7 This is a structural schematic diagram of the load-bearing plate according to an embodiment of the utility model;

[0033] Description of reference numerals:

[0034] 1. Base body; 11. Upper end surface; 12. Angle connection block; 13. Protective baffle; 14. First connection rib; 15. Second connection rib; 17. Insertion hole; 18. Insertion column;

[0035] 2. Fastening nut; 21. First section; 22. Second section;

[0036] 3. Loading plate; 31. Elastic arm;

[0037] 10. Mounting hole; 101. First hole section; 102. Second hole section. DETAILED DESCRIPTION

[0038] 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.

[0039] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they 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, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0040] 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.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0042] Embodiment 1

[0043] The present embodiment relates to an output pole base, which can effectively prevent the output pole of the busbar from deforming upward or downward, thereby ensuring the reliability of the electrical connection.

[0044] In terms of overall structure, the output pole base of this embodiment is as follows Figures 1 to 4 As shown, it includes a base body 1 and a fastening nut 2 constrained on the base body 1. The base body 1 has an upper end face 11 and a mounting hole 10, the mounting hole is usually the upper end face 11, and the fastening nut 2 is constrained in the mounting hole 10, and the fastening nut 2 has a movable gap a along its own axial direction in the mounting hole 10.

[0045] At this time, as in the above structure, the fastening nut 2 is constrained in the mounting hole 10 of the base body 1, and the fastening nut 2 has an axial movable gap a in the mounting hole 10, which can effectively prevent the upward or downward deformation of the bus output pole, thereby ensuring the reliability of the electrical connection.

[0046] Based on the above overall structure, for details, see Figures 1 to 5As shown, as a preferred embodiment, in this embodiment, a plurality of corner connecting blocks 12 are provided on the upper end surface 11, and the plurality of corner connecting blocks 12 are arranged along the circumference of the upper end surface 11, and a protective baffle 13 is provided between two adjacent corner connecting blocks 12, and each protective baffle 13 is connected to two adjacent corner connecting blocks 12 and / or each protective baffle 13 is connected to the upper end surface 11 through a weak connecting portion, and each protective baffle 13 can be separated from the base body 1 by breaking the weak connecting portion.

[0047] It should be noted that the weak connection portion may be provided only between each protective baffle 13 and two adjacent corner connection blocks 12, or only between each protective baffle 13 and the upper end surface 11, or a weak connection portion may be provided between each protective baffle 13 and two adjacent corner connection blocks 12 and between each protective baffle 13 and the upper end surface 11.

[0048] Preferably, in this embodiment, a weak connection portion is provided between each protective baffle 13 and two adjacent corner connection blocks 12 and between each protective baffle 13 and the upper end surface 11. At this time, the protective baffle 13 and the corner connection block 12 and the protective baffle 13 and the upper end surface 11 are connected via the weak connection portion, and by breaking the weak connection portion, that is, breaking the weak connection portion under the action of an external force, the corresponding protective baffle 13 is separated from the base body 1 and an installation entrance is formed, thereby facilitating the electrical connection of the busbar output pole or the high-voltage copper busbar with the fastening nut 2 through the installation entrance.

[0049] At the same time, the output pole base of this embodiment can also be based on the actual installation requirements of the bus output pole or high-voltage copper busbar, and the protective baffle 13 at the corresponding position can be broken off from the base body 1, so as to meet different installation requirements and improve the versatility of the output pole base. This not only saves mold opening costs, but also facilitates employee assembly and logistics management. In addition, the unbroken protective baffle 13 can also play a protective role and improve the safety of use.

[0050] For more details, see Figures 1 to 5 As shown, the weak connection part of this embodiment includes a first connection rib 14 connecting the protective baffle 13 and the corner connection block 12, and a second connection rib 15 connecting the protective baffle 13 and the upper end surface 11. Its structure is simple and easy to process and prepare. In specific implementation, the first connection rib 14, the second connection rib 15, the corner connection block 12 and the base body 1 are preferably integrally injection molded. In addition, the number of the first connection rib 14 and the second connection rib 15 can be set according to actual needs.

[0051] As a preferred embodiment, in this embodiment, the first connecting rib 14 has a first end face connected to the corner connecting block 12, and a second end face connected to the protective baffle 13, and the area of ​​the first end face is smaller than the area of ​​the second end face. In addition, the second connecting rib 15 has a third end face connected to the upper end face 11, and a fourth end face connected to the protective baffle 13, and the area of ​​the third end face is smaller than the area of ​​the fourth end face. In this way, the connection strength of the end of the first connecting rib 14 connected to the corner connecting block 12 and the end of the second connecting rib 15 connected to the upper end face 11 is weak, and a small force can be used to disconnect from this position, so that the protective baffle 13 is separated from the corner connecting block 12 and the upper end face 11 respectively, and it is also helpful to ensure the flatness of the corner connecting block 12 and the upper end face 11 after the protective baffle 13 is disconnected.

[0052] It should be noted that, in addition to the first connecting rib 14 and the second connecting rib 15 being both configured in the above-mentioned structural form, it is also possible to only configure the first connecting rib 14 to adopt the above-mentioned structure, or to configure the second connecting rib 15 to adopt the above-mentioned structure. Of course, it is also understandable that, in addition to the above-mentioned structural form, the first connecting rib 14 and the second connecting rib 15 can also be configured in other shapes, such as a long strip structure with a circular, triangular or rectangular cross-sectional shape, which is also feasible.

[0053] In this embodiment, as a preference, the dimension H1 of the first connecting rib 14 in the height direction of the base body 1 satisfies: 1mm≤H1≤2mm. The dimension H2 of the second connecting rib 15 in the length direction of the protective baffle 13 satisfies: 1mm≤H2≤2mm. Moreover, the distance L1 between the protective baffle 13 and the corresponding corner connecting block 12 satisfies: 1mm≤L1≤2mm. The distance L2 between the protective baffle 13 and the upper end surface 11 satisfies: 1mm≤L2≤2mm.

[0054] At this time, by limiting the size of the first connecting rib 14 and the second connecting rib 15, not only the connection strength of the protective baffle 13 due to too small size can be guaranteed, but also the breaking of the protective baffle 13 due to too large size can be prevented.

[0055] In specific implementation, the value of dimension H1 is set to 1mm, 1.3mm, 1.5mm, 1.7mm or 2mm, for example, the value of dimension H2 is set to 1mm, 1.2mm, 1.5mm, 1.8mm or 2mm, for example, and the distances L1 and L2 are set to 1mm, 1.3mm, 1.5mm, 1.7mm or 2mm, for example. Preferably, the dimensions H1 and H2, as well as the distances L1 and L2 are preferably 1.5mm. In addition, the cross-sections of the first connecting rib 14 and the second connecting rib 15 are trapezoidal, and, as projected on the upper end surface 11, the dimension W1 of the first end surface is preferably 1.0mm, and the dimension W2 of the second end surface is preferably 1.5mm.

[0056] As a preferred implementation form, in this embodiment, the fastening nut 2 is specifically constrained in the mounting hole 10 by a bearing plate 3 clamped on the base body 1, and the fastening nut 2 abuts against the bearing plate 1, and one end of the fastening nut 2 is exposed on the upper end surface 11. At this time, the setting of the bearing plate 3 can make the fastening nut 2 better constrained in the mounting hole 10, and one end of the fastening nut 2 is exposed on the upper end surface 11, which can ensure the reliability of the electrical connection between the bus output pole or the high-voltage copper bus and the fastening nut. For the specific structure, refer to Figure 4 and Figure 6 As shown, the mounting hole 10 has a first hole section 101 and a second hole section 102 which are connected, and the cross-sectional area of ​​the second hole section 102 is larger than the cross-sectional area of ​​the first hole section 101. The fastening nut 2 has a first section 21 and a second section 22 which are connected along its own axis direction, the first section 21 is inserted into the first hole section 101, and the second section 22 is located in the second hole section 102. The bearing plate 3 is located at the bottom of the second section 22, and is used to hold the fastening nut 2 to prevent the fastening nut 2 from falling out of the mounting hole 10.

[0057] Since the bottom of the module is bonded and fixed to the lower shell by structural glue, the thickness of the glue is difficult to guarantee. When the thickness of the glue is too thick, there will be a gap between the bus output pole and the upper mounting surface of the fastening nut 2, causing the bus output pole to deform downward when the bolt is tightened. When the thickness of the glue is too thin, the bus output pole will interfere with the fastening nut 2, causing the bus output pole to deform upward. For this reason, in this embodiment, when the second section 22 abuts against the bearing plate 3, the upper end face 11 of the second section 22 is spaced a certain distance a from the upper end of the second hole section 102. By setting the interval distance, the fastening nut 2 has a certain movable space along its own axial direction, which can effectively prevent the upward or downward deformation of the bus output pole.

[0058] In this embodiment, as a preferred embodiment, the structure of the fastening nut 2 is as follows: Figure 6 As shown, in the fastening nut 2, the outer contour of the cross section of the first section 21 is circular, the outer contour of the cross section of the second section 22 is hexagonal, and the outer diameter of the first section 21 is smaller than the distance between two opposite planes on the outer peripheral wall of the second section 22. When the fastening nut 2 is matched with the mounting hole 10, the setting of the structure of the fastening nut 2 is conducive to its restraint on the output pole base, and the second section 22 cooperates with the hexagonal contour of the second hole section 102 to prevent the fastening nut 2 from rotating relative to the output pole base, which is conducive to the screw connection and fixation of the busbar output pole or the high-voltage copper busbar.

[0059] See also Figure 1 , Figure 2 ,as well as Figure 4 and Figure 7As shown, in this embodiment, an insertion hole 17 for inserting the carrier plate 3 is provided on the base body 1. The carrier plate 3 has a head and a tail in structure, and the width of the head is smaller than the width of the tail. Elastic arms 31 are provided on both sides of the tail in the width direction, and the distance between the two elastic arms 31 is greater than the length of the insertion hole 17. After the carrier plate 3 is inserted into the insertion hole 17, the carrier plate 3 is clamped in the insertion hole 17 by the two elastic arms 31 and fixed on the base body 1.

[0060] In addition, in this embodiment, a plug-in column 18 is also provided at the bottom of the base body 1, and the plug-in column 18 is used to install and fix the output pole base on an external component, such as a module beam or a module end plate of the lower shell of the battery pack. In specific implementation, a plug-in hole is provided on the module beam, and the plug-in column 18 is inserted into the plug-in hole. Through the plug-in cooperation between the plug-in column 18 and the plug-in hole, the output pole base is fixed on the module beam or the module end plate.

[0061] The output pole base of this embodiment can be based on the actual installation requirements of the bus output pole or the high-voltage copper bus, so that the protective baffle 13 at the corresponding position can be broken off from the base body 1 by breaking the weak connection part, thereby improving the versatility of the output pole base, and the unbroken protective baffle 13 can also play a protective role, thereby improving the safety of use.

[0062] Embodiment 2

[0063] This embodiment relates to a battery pack, and the output pole base described in the first embodiment is provided on the cross beam of the lower shell of the battery pack.

[0064] The battery pack of this embodiment adopts the above-mentioned output pole base. According to the actual installation requirements of the bus output pole or the high-voltage copper bus, the protective baffle 13 at the corresponding position can be broken off from the base body 1 to achieve different installation requirements, thereby improving the versatility of the output pole base and facilitating the universal assembly of the positive and negative output pole bases. At the same time, it also has a good protective effect and ensures safety in use.

[0065] 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. An output pole base, characterized in that: It includes a base body and a fastening nut constrained on the base body; The base body has an upper end surface and a mounting hole, and the mounting hole passes through the upper end surface; The fastening nut is constrained in the mounting hole, and the fastening nut has a movable gap a along its own axial direction in the mounting hole.

2. The output pole base according to claim 1, characterized in that: A plurality of corner connecting blocks are provided on the upper end surface, and the plurality of corner connecting blocks are arranged along the circumference of the upper end surface, and a protective baffle is provided between two adjacent corner connecting blocks, and each protective baffle is connected to two adjacent corner connecting blocks and / or each protective baffle is connected to the upper end surface via a weak connecting portion, and each protective baffle can be separated from the base body by breaking the weak connecting portion.

3. The output pole base according to claim 2, characterized in that: The weak connection portion includes a first connection rib connecting the protection baffle and the corner connection block, and / or the weak connection portion includes a second connection rib connecting the protection baffle and the upper end surface.

4. The output pole base according to claim 3, characterized in that: The first connecting rib has a first end face connected to the corner connecting block, and a second end face connected to the protective baffle, and an area of ​​the first end face is smaller than an area of ​​the second end face; and / or, The second connecting rib has a third end surface connected to the upper end surface, and a fourth end surface connected to the protective baffle, and the area of ​​the third end surface is smaller than the area of ​​the fourth end surface.

5. The output pole base according to claim 3, characterized in that: The dimension H1 of the first connecting rib in the height direction of the base body satisfies: 1mm≤H1≤2mm, and the dimension H2 of the second connecting rib in the length direction of the protective baffle satisfies: 1mm≤H2≤2mm; and / or, A distance L1 between the protective baffle and the corresponding corner connecting block satisfies: 1mm≤L1≤2mm, and a distance L2 between the protective baffle and the upper end surface satisfies: 1mm≤L2≤2mm.

6. The output pole base according to any one of claims 1 to 5, characterized in that: The fastening nut is constrained in the mounting hole by a bearing plate clamped on the base body, the fastening nut abuts against the bearing plate, and one end of the fastening nut is exposed on the upper end surface.

7. The output pole base according to claim 6, characterized in that: The mounting hole comprises a first hole section and a second hole section which are connected, and the cross-sectional area of ​​the second hole section is larger than the cross-sectional area of ​​the first hole section; The fastening nut has a first section and a second section connected along its own axial direction, the first section is inserted into the first hole section, the second section is located in the second hole section, and when the second section abuts against the bearing plate, the top end surface of the second section is spaced a certain distance a from the top end of the second hole section.

8. The output pole base according to claim 7, characterized in that: The outer contour of the cross section of the first section is circular, the outer contour of the cross section of the second section is hexagonal, and the outer diameter of the first section is smaller than the distance between two opposite planes on the outer peripheral wall of the second section.

9. The output pole base according to claim 6, characterized in that: The carrying plate is inserted into the insertion hole on the base body, and elastic arms are provided on both sides of the width direction of the carrying plate, and the distance between the two elastic arms is greater than the length of the insertion hole; After the carrying plate is inserted into the inserting hole, the carrying plate is clamped in the inserting hole through the two elastic arms.

10. A battery pack, characterized in that: The battery pack is provided with an output pole base as described in any one of claims 1-9.

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