Battery pack mounting and positioning structure

Abstract

The utility model provides a battery pack mounting and positioning structure which comprises a first positioning unit arranged between a battery pack and a vehicle body and a second positioning unit arranged among the battery pack, the vehicle body and a battery pack tray. The first positioning unit is provided with a first positioning piece and a first positioning hole matched with the first positioning piece, and a first positioning gap is formed between the first positioning piece and the first positioning hole. The second positioning unit is provided with a second positioning piece and a second positioning hole matched with the second positioning piece, a second positioning gap is formed between the second positioning piece and the second positioning hole, and the first positioning gap is larger than the second positioning gap. According to the battery pack installing and positioning structure, the first positioning unit can play a role in guiding assembly and preventing the battery pack from colliding with peripheral parts in the battery pack installing process, the second positioning unit facilitates centering of connecting points of the battery pack and a vehicle body, and meanwhile the second positioning unit can be used for positioning the battery pack after the battery pack is assembled. And the first positioning piece can be conveniently and smoothly disassembled.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, and in particular to a battery pack installation and positioning structure. Background Art

[0002] The battery pack shell that is usually assembled under the chassis of the vehicle body is equipped with main positioning parts and auxiliary positioning parts for guiding and positioning during assembly to prevent the battery pack from colliding with surrounding parts. It is also convenient for centering the bolt holes and for quick installation of bolts. Among them, the positioning parts need to be processed on the battery pack shell, resulting in high material and transportation costs for the battery pack. To this end, one solution is to design the positioning parts on the battery pack tray used to support the battery pack, and to open positioning holes on the battery pack and the vehicle body. However, the disadvantage of this solution is that the positioning parts are easy to get stuck after the battery is locked and are not easy to come out, especially when the positioning parts are long, which will affect the assembly rhythm of the production line. Utility Model Content

[0003] In view of this, the utility model aims to provide a battery pack installation and positioning structure, so that after the battery pack is assembled, the first positioning member can be easily removed from the first positioning hole.

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

[0005] A battery pack installation positioning structure comprises a first positioning unit arranged between the battery pack and a vehicle body, and a second positioning unit arranged between the battery pack, the vehicle body and a battery pack tray;

[0006] The first positioning unit has a first positioning piece and a first positioning hole matched with the first positioning piece, and a first positioning gap is formed between the first positioning piece and the first positioning hole;

[0007] The second positioning unit has a second positioning piece and a second positioning hole matched with the second positioning piece, and a second positioning gap is formed between the second positioning piece and the second positioning hole;

[0008] The first positioning gap is larger than the second positioning gap.

[0009] Furthermore, the first positioning member is provided on the battery pack, and the first positioning hole is provided on the vehicle body.

[0010] Furthermore, the first positioning member has an external thread section and a polished rod section;

[0011] The first positioning member is threadedly connected to the battery pack via the external thread segment, the polished rod segment is used to be inserted into the first positioning hole, and the first positioning gap is formed between the polished rod segment and the first positioning hole.

[0012] Furthermore, the minor diameter of the external thread section is greater than the diameter of the polished rod section.

[0013] Furthermore, the first positioning member has a limiting protrusion protruding outwardly in the radial direction of the external thread segment, and the limiting protrusion is arranged at the other end of the external thread segment relative to the polished rod segment;

[0014] The limiting protrusion can abut against the battery pack to limit the axial displacement of the first positioning member.

[0015] Furthermore, the limiting protrusion is provided with an operating block protruding outward along the axial direction of the first positioning member.

[0016] Furthermore, the second positioning member is arranged on the battery pack tray, the second positioning hole is arranged on the vehicle body, and the second positioning unit also has a third positioning hole arranged on the battery pack.

[0017] Furthermore, the second positioning member is screwed to the battery pack tray.

[0018] Further, a first guide surface is provided at the free end of the first positioning member, and the first guide surface can guide the first positioning member to be inserted into the first positioning hole; and / or,

[0019] A second guide surface is provided at the free end of the second positioning member, and the second guide surface can guide the second positioning member to be inserted into the second positioning hole.

[0020] Further, the first positioning hole includes a lower positioning hole provided at the bottom of the vehicle body, and an upper positioning hole provided above the lower positioning hole, and the first positioning member is inserted into the lower positioning hole and the upper positioning hole together;

[0021] The second positioning hole is arranged at the bottom of the vehicle body.

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] The battery pack installation positioning structure described in the utility model can make the first positioning gap larger than the second positioning gap, so that the first positioning unit can play the role of assembly guide and prevent the battery pack from colliding with surrounding parts during the battery pack installation process, while the second positioning unit can facilitate the centering of the connection point between the battery pack and the vehicle body. At the same time, after the battery pack is assembled, it can facilitate the first positioning member to smoothly disengage from the first positioning hole, which can effectively avoid the problem of the first positioning member being stuck.

[0024] In addition, the first positioning member is arranged on the battery pack. Since the battery pack is installed below the chassis of the vehicle body, it is convenient to remove the first positioning member from below. By arranging an external thread section on the first positioning member and screwing the external thread section to the battery pack, it is convenient to disassemble and assemble the first positioning member while having the advantages of simple structure and easy design and implementation. The minor diameter of the external thread section is larger than the diameter of the bare rod section, which can further facilitate the first positioning member to be removed from the vehicle body and the battery pack.

[0025] Secondly, by setting a limiting protrusion that limits the axial displacement of the first positioning member, the limiting protrusion can be in contact with the battery pack to indicate that the first positioning member is inserted into the first positioning hole, which is conducive to ensuring the positioning effect of the first positioning unit. An operating block is set on the limiting protrusion to facilitate operation to disassemble and assemble the first positioning member. Compared with setting it on the vehicle body, setting the second positioning member on the battery pack tray can prevent the second positioning member from interfering with other parts of the vehicle body.

[0026] In addition, the second positioning member is screwed to the battery pack tray, which facilitates the removal and replacement of the second positioning member. By providing a first guide surface at the free end of the first positioning member, it is convenient to guide the first positioning member to be inserted into and removed from the first positioning hole, and providing a second guide surface at the free end of the second positioning member, it is convenient to guide the second positioning member to be inserted into and removed from the second positioning hole, which can improve the installation efficiency of the battery pack. Inserting the first positioning member into the lower positioning hole and the upper positioning hole at the same time can improve the positioning effect of the battery pack. 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 battery pack positioning structure according to an embodiment of the utility model;

[0029] Figure 2 for Figure 1 A magnified view of part A;

[0030] Figure 3 A schematic diagram of the battery pack positioning structure from another perspective;

[0031] Figure 4 for Figure 3 Enlarged view of part B;

[0032] Figure 5 It is a structural schematic diagram of the first positioning member described in an embodiment of the utility model.

[0033] Description of reference numerals:

[0034] 1. Battery pack; 2. Vehicle body; 3. Battery pack tray; 4. First positioning member; 5. Second positioning member; M, upper positioning hole; N, lower positioning hole; P, second positioning hole;

[0035] 101, sleeve; 401, external threaded section; 402, polished rod section; 403, limiting protrusion; 404, operating block; 405, first guide surface. 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 utility model, it should be noted that the directional words such as "up, down, left, right, front, and back" used in the present embodiment are defined based on the up-down direction, left-right direction, and front-back direction of the automobile. Among them, the up-down direction of the automobile is also the height direction of the automobile (Z direction), the front-back direction of the automobile is also the length direction of the automobile (X direction), and the left-right direction of the automobile is also the width direction of the automobile (Y direction). In addition, the terms "first" and "second" are used only 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] In order to install the battery pack 1 under the chassis of the vehicle body 2, the battery pack 1 is generally first installed on the battery pack tray 3, and then the battery pack tray 3 and the battery pack 1 are lifted as a whole, and the battery pack 1 is positioned on the vehicle body 2 using a positioning member during the lifting process. However, in the current technology, there is usually a problem that the positioning member cannot be removed after the battery pack 1 is assembled. For this reason, this embodiment specifically proposes a battery pack installation positioning structure, which, in terms of overall structure, includes a first positioning unit disposed between the battery pack 1 and the vehicle body 2, and a second positioning unit disposed between the battery pack 1, the vehicle body 2 and the battery pack tray 3.

[0041] The first positioning unit has a first positioning member 4 and a first positioning hole matched with the first positioning member 4, and a first positioning gap is formed between the first positioning member 4 and the first positioning hole. The second positioning unit has a second positioning member 5 and a second positioning hole P matched with the second positioning member 5, and a second positioning gap is formed between the second positioning member 5 and the second positioning hole P, and the first positioning gap is larger than the second positioning gap.

[0042] The battery pack 1 installation positioning structure of the present embodiment, by making the first positioning gap larger than the second positioning gap, can enable the first positioning unit to serve as an assembly guide and prevent the battery pack 1 from colliding with surrounding parts during the installation of the battery pack 1, while the second positioning unit can facilitate the centering of the connection point between the battery pack 1 and the vehicle body 2. At the same time, after the battery pack 1 is assembled, it can facilitate the first positioning member 4 to smoothly disengage from the first positioning hole, which can effectively avoid the problem of the first positioning member 4 being stuck.

[0043] Based on the above overall introduction, an exemplary structure of the battery pack 1 installation and positioning structure of this embodiment is referred to as follows: Figures 1 to 3 As shown in , the first positioning unit is used to achieve rough positioning of the battery pack 1 on the vehicle body 2, which is mainly used to guide and prevent the battery pack 1 from colliding with surrounding parts during the assembly process of the battery pack 1. The second positioning unit is used to achieve the positioning of the battery pack 1 on the battery pack tray 3, and the fine positioning of the battery pack 1 on the vehicle body 2, which mainly serves to facilitate the centering of the connection point between the battery pack 1 and the vehicle body. In addition, the first positioning hole is matched with the first positioning member 4, which specifically means that the two have the same shape and similar size, and when the first positioning member 4 is inserted into the first positioning hole, it can play a role in rough positioning. The meaning of the second positioning hole P being matched with the first positioning member 5 is similar to this.

[0044] And, as a preferred embodiment, combined with Figure 2 and Figure 3 As shown in , the first positioning member 4 is provided on the battery pack 1, and the first positioning hole is provided on the vehicle body 2. Since the battery pack 1 is installed below the chassis of the vehicle body 2, this arrangement can facilitate the removal of the first positioning member 4 from below. In addition, in order to improve the guiding effect of the battery pack 1 during the installation process, the first positioning member 4 is provided on both opposite sides of the battery pack 1 in the width direction, and correspondingly, the first positioning holes are provided on both the left and right sides of the vehicle body 2. Moreover, the first positioning member 4 can be specifically provided on the shell frame of the battery pack 1, and the first positioning hole can be specifically provided on the longitudinal beam of the vehicle body 2.

[0045] Combination Figure 4 and Figure 5As shown in , the first positioning member 4 specifically adopts a positioning pin with a circular cross section, and correspondingly, the first positioning hole is a matching circular hole. And, as a further embodiment, the first positioning member 4 of this embodiment has an external thread section 401 and a polished rod section 402, wherein Figure 5 The specific external thread is not shown. The first positioning member 4 is screwed to the battery pack 1 through the external thread section 401, the bare rod section 402 is used to insert into the first positioning hole, and the first positioning gap is formed between the bare rod section 402 and the first positioning hole. In this embodiment, by providing the external thread section 401 on the first positioning member 4 and screwing it to the battery pack 1 through the external thread section 401, it is easy to disassemble and assemble the first positioning member 4, and also has the advantages of simple structure and easy design and implementation.

[0046] As a preferred embodiment, Figure 4 As shown in , a sleeve 101 is embedded in the housing frame of the battery pack 1, and the lower part of the sleeve 101 has an internal thread section that matches the external thread section 401. Therefore, the first positioning member 4 can be arranged on the battery pack 1 by screwing the first positioning member 4 with the sleeve 101. In addition, as a further embodiment, as shown in Figure 4 As shown in the figure, the minor diameter of the external thread segment 401 is larger than the diameter of the bare rod segment 402. With this arrangement, when the first positioning member 4 is disassembled, even if the first positioning member 4 and the vehicle body 2 are stuck, when the external thread segment 401 of the first positioning member 4 is completely screwed out, there is still a certain gap between the minor diameters of the bare rod segment 402 and the external thread segment 401, which can also ensure that the first positioning member 4 can be smoothly removed.

[0047] In the specific implementation, the external thread section 401 of the first positioning member 4 can be set to M20×2.5, and its minor diameter is generally 17.3 mm, the diameter of the polished rod section 402 can be set to 16 mm, and the inner diameter of the first positioning hole can be set to 20 mm. Of course, in the specific implementation, the specific sizes of the external thread section 401 and the polished rod section 402 can be adjusted according to design requirements.

[0048] Continue to refer to Figure 4 and Figure 5 As shown in , as a further embodiment, the first positioning member 4 has a limiting protrusion 403 protruding radially outward along the external thread segment 401, and the limiting protrusion 403 is arranged at the other end of the external thread segment 401 relative to the bare rod segment 402. The limiting protrusion 403 can abut against the battery pack 1 to limit the axial displacement of the first positioning member 4. With this design, when the first positioning member 4 is installed on the battery pack 1, the abutment between the limiting protrusion 403 and the battery pack 1 indicates that the first positioning member 4 is inserted into the first positioning hole, which is conducive to ensuring the positioning effect of the first positioning unit.

[0049] At this time, in order to facilitate the operation of screwing the first positioning member 4, Figure 4 and Figure 5 As shown in , the limiting protrusion 403 is provided with an operating block 404 protruding outward along the axis of the first positioning member 4. Among them, as a preferred embodiment, the cross section of the operating block 404 in this embodiment is hexagonal, which is not convenient for hand holding, and can also cooperate with external tools to facilitate screwing the operating block 404.

[0050] like Figure 3 and Figure 4 As shown in , the second positioning member 5 of this embodiment is provided on the battery pack tray 3, the second positioning hole P is provided on the vehicle body 2, and the second positioning unit also has a third positioning hole provided on the battery pack 1, and the second positioning member 5 passes through the third positioning hole to position the battery pack 1 on the battery pack tray 3. In this embodiment, the second positioning member 5 is provided on the battery pack tray 3, which can prevent the second positioning member 5 from interfering with other parts of the vehicle body 2 compared to being provided on the vehicle body 2. In addition, as a preferred embodiment, the second positioning member 5 also adopts a positioning pin with a circular cross section, and the second positioning hole P is a matching circular hole.

[0051] In addition, as a preferred embodiment, the second positioning member 5 of this embodiment is screwed to the battery pack tray 3 to facilitate the disassembly and replacement of the second positioning member 5. Moreover, in a specific implementation, the outer diameter of the second positioning member 5 can be set to 16 mm, and the inner diameter of the second positioning hole P can be set to 17 mm. The gap between the second positioning member 5 and the third positioning hole can be set to 0.3 mm-0.5 mm. Of course, in a specific implementation, the outer diameter of the second positioning member 5 and the inner diameter of the second positioning hole P can be adaptively adjusted, as long as the precise positioning is met to facilitate the connection point between the battery pack 1 and the vehicle body 2 to be centered.

[0052] In addition, in order to improve the installation effect of the battery pack 1, as Figure 4 As shown in , the free end of the first positioning member 4 is provided with a first guide surface 405, and the first guide surface 405 can guide the first positioning member 4 to be inserted into and removed from the first positioning hole. At the same time, the free end of the second positioning member 5 is provided with a second guide surface, and the second guide surface can guide the second positioning member 5 to be inserted into and removed from the second positioning hole P.

[0053] It should be noted that, in addition to providing the first guide surface 405 on the first positioning member 4, the second guide surface is provided on the second positioning member 5. It is also possible to provide only the first guide surface 405 on the first positioning member 4, without providing the second guide surface on the second positioning member 5. In this case, the second positioning member 5 can be provided in a step-like shape with a gradually increasing cross section, which can also achieve a rough positioning effect and facilitate the insertion and removal of the first positioning member 4 to a certain extent. Alternatively, it is also possible to provide only the second guide surface on the second positioning member 5, without providing the first guide surface 405 on the first positioning member 4.

[0054] As a further embodiment, Figure 2 and Figure 3 As shown in , the first positioning hole includes a lower positioning hole N provided at the bottom of the vehicle body 2, and an upper positioning hole M provided above the lower positioning hole N, the first positioning member 4 is inserted into the lower positioning hole N and the upper positioning hole M together, and the second positioning hole P is provided at the bottom of the vehicle body 2. With this design, the insertion depth of the first positioning member 4 on the vehicle body 2 can be greater, which is beneficial to improving the guiding effect. At the same time, the length of the second positioning member 5 can be as short as possible, and it can be inserted into the first positioning hole on the vehicle body 2 to play a positioning effect, thereby facilitating the removal of the second positioning member 5, and preventing the second positioning member 5 from being stuck more seriously or even unable to be removed smoothly due to the excessive length of the second positioning member 5. At the same time, it can also avoid the second positioning member 5 being too long, and there will still be a situation where the battery pack 1 is assembled on the battery pack tray 3 and the battery pack tray 3 is stuck during the falling process, and it can also effectively avoid the serious wear and deformation of the second positioning member 5, as well as the existing safety hazards.

[0055] Among them, Figure 2 As shown in , the first positioning hole and the second positioning hole P of this embodiment are both arranged on the longitudinal beam of the vehicle body 2, and because the longitudinal beam generally has a cavity formed inside, it has an upper wall and a lower wall arranged at intervals from top to bottom. Therefore, the lower positioning hole N of this embodiment is specifically arranged on the lower wall of the longitudinal beam, and the upper positioning hole M is arranged on the upper wall of the longitudinal beam, and at the same time, the second positioning hole P is also arranged on the lower wall of the longitudinal beam.

[0056] The battery pack installation structure of this embodiment can make the battery pack 1 not need to be provided with a long and costly positioning pin, which can effectively reduce the cost of the battery pack 1, and at the same time, after the first positioning member 4 is precisely positioned and assembled in place, the second positioning member 5 for rough positioning can be smoothly disassembled without affecting the assembly rhythm. Moreover, the second positioning member 5 can be recycled and is easy to disassemble and assemble, which can reduce the material cost and transportation cost of the battery pack 1, and is convenient for assembly and disassembly.

[0057] Furthermore, in the specific installation process, first, the battery pack 1 is placed on the battery pack tray 3, and after being positioned by the second positioning member 5 and the third positioning hole, the battery pack 1 and the battery pack tray 3 are regarded as a whole. Then the whole is lifted under the vehicle body 2, and the first positioning member 4 is first inserted into the first positioning hole to play a guiding role, and then the second positioning member 5 is inserted into the second positioning hole P to align the connection point between the battery pack 1 and the vehicle body 2. Then, after the battery pack 1 is connected to the vehicle body 2, the second positioning member 5 is unscrewed from the battery pack 1 and the vehicle body 2, and then the battery pack tray 3 is put down, and the battery pack 1 can be installed on the vehicle body 2. The operation is simple, and the second positioning member 5 is easy to remove.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack installation and positioning structure, characterized in that: It comprises a first positioning unit arranged between a battery pack (1) and a vehicle body (2), and a second positioning unit arranged between the battery pack (1), the vehicle body (2) and a battery pack tray (3); The first positioning unit comprises a first positioning member (4) and a first positioning hole arranged to match the first positioning member (4), and a first positioning gap is provided between the first positioning member (4) and the first positioning hole; The second positioning unit comprises a second positioning member (5) and a second positioning hole (P) arranged to match the second positioning member (5), and a second positioning gap is provided between the second positioning member (5) and the second positioning hole (P); The first positioning gap is larger than the second positioning gap.

2. The battery pack installation and positioning structure according to claim 1, characterized in that: The first positioning member (4) is arranged on the battery pack (1), and the first positioning hole is arranged on the vehicle body (2).

3. The battery pack installation and positioning structure according to claim 2, characterized in that: The first positioning member (4) comprises an external thread section (401) and a polished rod section (402); The first positioning member (4) is threadedly connected to the battery pack (1) via the external thread section (401); the polished rod section (402) is used to be inserted into the first positioning hole; and the first positioning gap is formed between the polished rod section (402) and the first positioning hole.

4. The battery pack installation and positioning structure according to claim 3, characterized in that: The minor diameter of the external thread section (401) is greater than the diameter of the polished rod section (402).

5. The battery pack installation and positioning structure according to claim 3, characterized in that: The first positioning member (4) has a limiting protrusion (403) protruding outwardly in the radial direction of the external thread segment (401); the limiting protrusion (403) is arranged at the other end of the external thread segment (401) relative to the polished rod segment (402); The limiting protrusion (403) can abut against the battery pack (1) to limit the axial displacement of the first positioning member (4).

6. The battery pack installation and positioning structure according to claim 5, characterized in that: The limiting protrusion (403) is provided with an operating block (404) protruding outward along the axis of the first positioning member (4).

7. The battery pack installation and positioning structure according to claim 1, characterized in that: The second positioning member (5) is arranged on the battery pack tray (3), the second positioning hole (P) is arranged on the vehicle body (2), and the second positioning unit also has a third positioning hole arranged on the battery pack (1).

8. The battery pack installation and positioning structure according to claim 7, characterized in that: The second positioning member (5) is screwed to the battery pack tray (3).

9. The battery pack installation and positioning structure according to claim 1, characterized in that: The free end of the first positioning member (4) is provided with a first guiding surface (405), and the first guiding surface (405) can guide the first positioning member (4) to be inserted into the first positioning hole; and / or, A second guide surface is provided at the free end of the second positioning member (5), and the second guide surface can guide the second positioning member (5) to be inserted into the second positioning hole (P).

10. The battery pack installation and positioning structure according to any one of claims 1 to 9, characterized in that: The first positioning hole comprises a lower positioning hole (N) provided at the bottom of the vehicle body (2), and an upper positioning hole (M) provided above the lower positioning hole (N), and the first positioning member (4) is inserted into both the lower positioning hole (N) and the upper positioning hole (M); The second positioning hole (P) is arranged at the bottom of the vehicle body (2).

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