Battery pack tooling and battery system

Abstract

The application discloses a battery pack tooling and a battery system, and belongs to the field of battery pack assembly. The battery pack tooling comprises a stud, a connecting rod and a holding part. One end of the stud is connected with one end of the connecting rod, the other end of the connecting rod is connected with the holding part, and the connecting rod has a hollow area which penetrates through the connecting rod in the radial direction of the connecting rod. The stud is used for being threadedly connected with a threaded hole on the battery pack, and after the stud is threadedly connected with the threaded hole, the hollow area is in communication with a first fixing hole of the battery pack. The hollow area in the connecting rod between the stud and the holding part enables the battery pack tooling to be used not only for separating the battery pack and a battery rack, but also for aligning the first fixing hole on the battery pack and a second fixing hole on the battery rack, so as to connect the battery pack and the battery rack.

Description

Technical Field

[0001] This application relates to the field of battery pack assembly, and in particular to a battery pack tooling and battery system. Background Technology

[0002] A battery pack typically consists of multiple battery modules, connectors, a battery management system, a cooling system, electrical interfaces, and a casing. When the battery pack is loaded onto a container, it needs to be connected to the battery racks inside the container. After transportation, the battery pack needs to be separated from the battery racks inside the container.

[0003] Currently, tooling is required to connect and disconnect battery packs and battery racks.

[0004] However, the tooling used for connecting the battery pack and the battery holder, as well as for separating the battery pack and the battery holder, is different and cannot be used interchangeably. Utility Model Content

[0005] This application provides a battery pack fixture. It solves the problem in the prior art that the fixtures used for connecting the battery pack and the battery holder, as well as for disassembling the battery pack and the battery holder, are not interchangeable. The technical solution is as follows:

[0006] In one aspect, a battery pack tooling is provided, including: a stud, a connecting rod, and a gripping part;

[0007] One end of the stud is connected to one end of the connecting rod, and the other end of the connecting rod is connected to the gripping part. The connecting rod has a hollow area that penetrates the connecting rod radially.

[0008] The stud is used to connect to the threaded hole on the battery pack, and after the stud is connected to the threaded hole, the hollow area communicates with the first fixing hole of the battery pack.

[0009] Optionally, the minimum distance between the hollowed-out area and the threaded hole in the axial direction of the connecting rod is less than or equal to the minimum distance between the first fixing hole and the threaded hole in the axial direction of the threaded hole.

[0010] Optionally, the hollow area of ​​the hollow region is greater than or equal to the hole area of ​​the first fixing hole.

[0011] Optionally, the hollowed-out area has a perforated structure.

[0012] Optionally, the connecting rod includes: a transfer frame, a first rod body, and a second rod body; the transfer frame is located between the first rod body and the second rod body, the two ends of the first rod body are respectively connected to the transfer frame and the gripping part, and the two ends of the second rod body are respectively connected to the transfer frame and the stud.

[0013] The transfer frame has the hollowed-out area.

[0014] Optionally, the gripping part includes at least two gripping rods, one end of each gripping rod being connected to the end of the connecting rod away from the stud, and the axial direction of each gripping rod being perpendicular to the axial direction of the connecting rod.

[0015] Optionally, the grip portion includes two grip rods, and the two grip rods are parallel in axis.

[0016] Optionally, the radial dimension of the connecting rod is larger than the radial dimension of the stud, and the axis of the connecting rod coincides with the axis of the stud.

[0017] Optionally, the axial length of the stud is greater than or equal to the axial length of the threaded hole.

[0018] In a second aspect, a battery system is provided, comprising: a bracket and at least one battery pack, as well as the battery pack tooling as described above;

[0019] The battery pack is mounted on the bracket, the battery pack has the threaded hole and the first fixing hole, the bracket has a second fixing hole communicating with the first fixing hole; the stud in the battery pack fixture is threadedly connected to the threaded hole, and the hollow area of ​​the battery pack fixture is communicating with the first fixing hole.

[0020] The beneficial effects of the technical solution provided in this application include at least the following: the battery pack and battery frame can be separated by connecting the stud on the battery pack fixture with the threaded hole on the battery pack, and then combining it with the gripping part. Furthermore, the connecting rod on the battery pack fixture located between the stud and the gripping part has a hollow area. After the stud is threadedly connected to the threaded hole, the hollow area communicates with the first fixing hole of the battery pack. This allows observation of whether the first fixing hole on the battery pack and the second fixing hole on the battery frame are aligned, facilitating quick alignment of the first and second fixing holes for connecting the battery pack and battery frame. The designed battery pack fixture can be used not only to align the first fixing hole of the battery pack and the second fixing hole of the battery frame, but also to disassemble the battery pack from the battery frame, achieving versatility in tooling. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the structure of aligning the first fixing hole on the battery pack and the second fixing hole on the battery holder in the relevant technology;

[0023] Figure 2 This is a schematic diagram of a battery pack tooling structure provided in an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of a battery pack tooling application scenario provided in an embodiment of this application;

[0025] Figure 4 yes Figure 3 Enlarged structural diagram at point A in the middle;

[0026] Figure 5 This is an enlarged structural diagram of a battery pack tooling application scenario provided in an embodiment of this application;

[0027] Figure 6 This is a schematic diagram of another battery pack tooling structure provided in an embodiment of this application;

[0028] Figure 7 This is a schematic diagram of a gripping part structure provided in an embodiment of this application;

[0029] Figure 8 This is a schematic diagram of another gripping part structure provided in an embodiment of this application. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0031] Normally, when connecting the battery pack 100 and the battery holder 200, the first fixing hole L1 on the battery pack 100 and the second fixing hole L2 on the battery holder 200 need to be aligned before the bolt can be passed through the first fixing hole L1 and the second fixing hole L2 and threaded onto the nut 210 on the battery holder 200. However, when installing the battery pack 100 onto the battery holder 200, the first fixing hole L1 and the second fixing hole L2 are usually not aligned on the first attempt.

[0032] Figure 1 This is a schematic diagram illustrating the alignment of the first fixing hole L1 on the battery pack 100 and the second fixing hole L2 on the battery holder 200 in related technologies. Please refer to it. Figure 1 A pry bar 300 is inserted through the first fixing hole L1 and the second fixing hole L2. The position of the first fixing hole L1 relative to the second fixing hole L2 is adjusted using the pry bar 300, thereby aligning the first fixing hole L1 and the second fixing hole L2. Alternatively, it can be... Figure 1 The pry bar 300 shown is replaced with a screwdriver to align with the first fixing hole L1 and the second fixing hole L2.

[0033] When using a pry bar 300 or a screwdriver to align the first fixing hole L1 and the second fixing hole L2, the pry bar 300 has a large force and the screwdriver is relatively sharp. This can easily cause impact force on weak points in the weld of the liquid cooling plate, leading to leakage and posing a safety risk. When the positional deviation between the first fixing hole L1 and the second fixing hole L2 is large, neither the pry bar 300 nor the screwdriver can be inserted into the second fixing hole L2, nor can they be aligned with the first fixing hole L1 and the second fixing hole L2. Furthermore, inserting the pry bar 300 or screwdriver into the second fixing hole L2 requires a point of leverage for adjusting the position of the battery pack 100. In this case, the nut 210 at the bottom weld of the battery frame 200 must serve as the leverage point. After repeatedly bearing force as a leverage point, the nut 210's threads are prone to stripping, leading to abnormal bolt fixing of the battery pack 100 and posing a safety risk.

[0034] When separating the battery pack 100 and the battery frame 200, after removing the bolts, use a lifting eye tool to screw it into the threaded hole V on the battery pack 100, and then drag the battery pack 100 to separate the battery pack 100 and the battery frame 200.

[0035] When using lifting eye fixtures, operators cannot determine whether the thread insertion depth meets safety requirements, nor can they check whether the thread is screwed in properly, meaning they cannot detect whether the thread is misaligned.

[0036] During the dragging of the battery pack 100, stress concentration is likely to occur in the lifting ring fixture, which can damage the lifting ring, reduce its service life, and compromise its safety.

[0037] The first fixing hole L1 on the battery pack 100 is usually an oblong hole, and the second fixing hole L2 on the battery holder 200 is usually a round hole.

[0038] This application addresses the problem of inconsistent tooling when connecting the battery pack 100 and the battery holder 200, as well as when separating the battery pack 100 and the battery holder 200. A battery pack tooling 000 is designed, and the specific solution is described below:

[0039] Figure 2 This is a schematic diagram of a battery pack tooling structure provided in an embodiment of this application. Please refer to it. Figure 2 One embodiment of this application provides a battery pack tooling 000, including: a stud 010, a connecting rod 020, and a gripping part 030.

[0040] One end of the stud 010 is connected to one end of the connecting rod 020, and the other end of the connecting rod 020 is connected to the gripping part 030. The connecting rod 020 has a hollow area K, which penetrates the connecting rod 020 in the radial direction.

[0041] Among them, the stud 010 is used to be threadedly connected to the threaded hole V on the battery pack 100, and after the stud 010 is threadedly connected to the threaded hole V, the hollow area K is connected to the first fixing hole L1 of the battery pack 100.

[0042] In summary, by connecting the studs on the battery pack fixture to the threaded holes on the battery pack, and combining this with the gripping part, the battery pack and battery frame can be separated. Furthermore, the connecting rod on the battery pack fixture located between the studs and the gripping part has a cutout area. After the studs are threaded into the threaded holes, the cutout area communicates with the first fixing hole of the battery pack. This allows observation of whether the first fixing hole on the battery pack and the second fixing hole on the battery frame are aligned, facilitating quick alignment of the first and second fixing holes for connecting the battery pack and battery frame. The designed battery pack fixture can be used not only to align the first fixing hole of the battery pack and the second fixing hole of the battery frame, but also to disassemble the battery pack from the battery frame, achieving versatility.

[0043] When connecting the battery pack 100 and the battery frame 200 using the battery pack fixture 000 of this application, the first fixing hole L1 and the second fixing hole L2 can be aligned through the hollow area K combined with the gripping part 030. During this process, the battery pack fixture 000 does not need to be inserted into the first fixing hole L1 and the second fixing hole L2. This avoids the risk of liquid leakage from the liquid cooling plate caused by the battery pack fixture 000, prevents the inability to adjust the position of the battery pack 100 due to the inability to insert into the second fixing hole L2, and also avoids the possibility of stripping the threads of the nut 210 on the battery frame 200 due to contact and force applied with the nut 210, thus preventing abnormal fixing of the battery pack 100. Using the battery pack 100 of this application is more convenient and safer.

[0044] Figure 3 This is a schematic diagram illustrating an application scenario of a battery pack tooling 000 provided in an embodiment of this application. Please refer to it. Figure 3 The battery pack 100 includes a battery case 110 and battery cells located inside the battery case 110. The battery case 110 includes a base plate 111 and a housing 112. A first fixing hole L1 is provided on the base plate 111, excluding the housing 112. After the battery pack fixture 000 and the threaded hole V on the battery pack 100 are connected, the hollow area K communicates with the first fixing hole L1. Normally, when connecting the battery pack 100 and the battery frame 200, there is at least an overlap between the first fixing hole L1 and the second fixing hole L2 to connect the first fixing hole L1 and the second fixing hole L2. Therefore, when the hollow area K communicates with the first fixing hole L1, the hollow area K also communicates with the second fixing hole L2.

[0045] Figure 4 yes Figure 3 A magnified structural diagram at point A. Please refer to the diagram. Figure 4 A threaded hole V is provided on the outer wall of the base plate 111 surrounding the first fixing hole L1.

[0046] Figure 5 This is an enlarged structural diagram illustrating an application scenario of a battery pack tooling 000 provided in this application embodiment. Please refer to... Figure 5 In one feasible implementation, the minimum distance between the hollow area K and the threaded hole V in the axial direction of the connecting rod 020 is less than or equal to the minimum distance between the first fixing hole L1 and the threaded hole V in the axial direction of the threaded hole V.

[0047] By limiting the minimum distance between the cutout area K and the threaded hole V in the axial direction of the connecting rod 020 to be less than or equal to the minimum distance between the first fixing hole L1 and the threaded hole V in the axial direction of the threaded hole V, it is convenient to align the first fixing hole L1 and the second fixing hole L2 through the cutout area K.

[0048] Optionally, the cutout area of ​​the cutout area K is greater than or equal to the hole area of ​​the first fixing hole L1. This allows for observation through the cutout area K of whether the first fixing hole L1 and the second fixing hole L2 are aligned or of any positional deviation between them, thereby facilitating quick adjustment of the battery pack 100 to align the first fixing hole L1 and the second fixing hole L2.

[0049] In one feasible implementation, the hollow area K has a perforated structure. This allows for the direct creation of the hollow area K on the connecting rod 020, and facilitates the processing and production of the battery pack tooling 000.

[0050] When the battery pack fixture 000 is actually used, the hollow area K in the battery pack fixture 000 is located on the side of the first fixing hole L1 away from the second fixing hole L2. In order to facilitate the observation of the first fixing hole L1 and the second fixing hole L2, the hollow area K is a waist-shaped hole with the same shape as the first fixing hole L1.

[0051] Figure 6 This is a schematic diagram of another battery pack tooling structure provided in an embodiment of this application. Please refer to... Figure 6 In another feasible embodiment, the connecting rod 020 includes: a transfer frame 021, a first rod body 022, and a second rod body 023. The transfer frame 021 is located between the first rod body 022 and the second rod body 023. The two ends of the first rod body 022 are respectively connected to the transfer frame 021 and the grip portion 030, and the two ends of the second rod body 023 are respectively connected to the transfer frame 021 and the stud 010.

[0052] Among them, the transfer frame 021 has a hollow area K.

[0053] The intermediate frame 021 provides a larger cutout area K, which makes it easier for users to observe the position between the first fixing hole L1 and the second fixing hole L2, thereby improving the efficiency of aligning the first fixing hole L1 and the second fixing hole L2.

[0054] For example, the transfer frame 021 is a rectangular frame structure.

[0055] Optionally, at least one reinforcing rib 024 is fixed inside the transfer frame 021, and the frame of the transfer frame 021 and the at least one reinforcing rib 024 enclose at least two sub-hollow areas, and the at least two sub-hollow areas K are combined to form a hollow area K.

[0056] The reinforcing rib 024 increases the strength of the transfer frame 021, ensuring the safety of the battery pack tooling 000 during use.

[0057] For example, two reinforcing ribs 024 are fixed inside the transfer frame 021. The two reinforcing ribs 024 are distributed along the diagonals of the rectangular transfer frame 021, and the two reinforcing ribs 024 intersect at the center of the transfer frame 021. At this time, the two reinforcing ribs 024 and the transfer frame 021 can enclose and form four sub-cutout areas, and the four sub-cutout areas combine to form cutout area K.

[0058] In one feasible embodiment, the grip portion 030 includes at least two grip rods 031, one end of each grip rod 031 being connected to the end of the connecting rod 020 away from the stud 010, or one end of each grip rod 031 intersecting and forming a connection position at the intersection, and the end of the connecting rod 020 away from the stud 010 being connected to the connection position on the grip portion 030.

[0059] The axial direction of each gripping rod 031 is perpendicular to the axial direction of the connecting rod 020, which helps to ensure that the force on each gripping rod 031 is consistent or basically consistent when the gripping part 030 is gripped.

[0060] Optional, please refer to Figure 6 The gripping part 030 includes two gripping rods 031, and the axes of the two gripping rods 031 are parallel. Specifically, the axes of the two gripping rods 031 coincide. The gripping part 030 provides a dual-side force application point through the two gripping rods 031, balancing the adjustment and dragging torque, saving time and effort.

[0061] Figure 7 This is a schematic diagram of a gripping part 030 provided in an embodiment of this application. Please refer to it. Figure 7 Optionally, the gripping part 030 includes three gripping rods 031. The three gripping rods 031 are circumferentially spaced, and all three gripping rods 031 extend radially outward. One end of each gripping rod 031 is connected to the end of the connecting rod 020 away from the stud 010.

[0062] Figure 8 This is a schematic diagram of another gripping part 030 structure provided in an embodiment of this application. Please refer to... Figure 8Optionally, the gripping part 030 includes four gripping rods 031. The four gripping rods 031 are distributed circumferentially at intervals, and the extension direction of the four gripping rods 031 is radially outward. One end of each gripping rod 031 is connected to the end of the connecting rod 020 away from the stud 010.

[0063] Please refer to Figure 2 In one feasible implementation, the radial dimension of the connecting rod 020 is greater than the radial dimension of the stud 010, and the axis of the connecting rod 020 coincides with the axis of the stud 010.

[0064] By making the radial dimension of the connecting rod 020 larger than that of the stud 010, and by aligning the axis of the connecting rod 020 with that of the stud 010, the strength of the battery pack fixture 000 can be increased, the stress distribution of the dragging battery pack 100 can be made more uniform, the peak stress can be greatly reduced, the fatigue cycle number of the battery pack fixture 000 can be greatly increased, and the service life of the battery pack fixture 000 can be improved.

[0065] In this configuration, the face of the connecting rod 020 facing the stud 010 is perpendicular to the axis of the stud 010. This allows for easy observation of whether the end face of the connecting rod 020 facing the stud 010 is parallel to the side wall of the bottom plate 111 in the battery box 110 at the threaded hole V during the threaded connection of the stud 010 and the threaded hole V. This facilitates timely detection of abnormal screwing of the stud 010 into the threaded hole V, or ensures that the threaded hole V is screwed into the threaded hole V in the correct direction, thereby improving the efficiency of the connection between the battery pack tooling 000 and the threaded hole V.

[0066] Alternatively, in other feasible embodiments, the face of the gripping part 030 facing the stud 010 is perpendicular to the axis of the stud 010 to ensure normal connection between the stud 010 and the threaded hole V.

[0067] In one feasible implementation, the axial length of the stud 010 is greater than or equal to the axial length of the threaded hole V. This ensures the connection strength between the stud 010 and the threaded hole V in the battery pack tooling 000.

[0068] When the axial length of stud 010 is equal to the axial length of threaded hole V, for example, stud 010 is M10 and has a thread length of 30mm, threaded hole V and stud 010 are compatible, which meets the safety enhancement design in dynamic scenarios and ensures that the battery pack tooling 000 is tightly connected to threaded hole V, avoiding safety risks.

[0069] Furthermore, when the axial length of the stud 010 is equal to the axial length of the threaded hole V, after the stud 010 and the threaded hole V are threadedly connected, the stud 010 just completely enters the threaded hole V. At this time, the minimum distance between the hollowed-out area K and the threaded hole V in the axial direction of the connecting rod 020 is also the axial length of the connecting rod 020 between the hollowed-out area K and the stud 010.

[0070] When the axial length of stud 010 is greater than the axial length of threaded hole V, for example, the axial length of stud 010 is 1-2 mm greater than the axial length of threaded hole V.

[0071] Before explaining the usage scenarios of the battery pack fixture 000, let's first explain the threaded holes V on the battery pack 100. Typically, the battery pack 100 has one threaded hole V on each side of one end, and when operating one battery pack 100, two battery pack fixtures 000 are used.

[0072] The application scenarios of the battery pack fixture 000 in the above embodiments designed in this application are described as follows:

[0073] When adjusting the positioning of the battery pack 100, fully screw the stud 010 of the battery pack fixture 000 into the threaded hole V. During this process, observe whether the side of the threaded hole V is flush with the surface of the connecting rod 020 near the stud 010 in the battery pack fixture 000. This checks whether the threads of the battery pack fixture 000 are properly screwed in and whether they are misaligned, thus preventing damage to the battery pack fixture 000. After the battery pack fixture 000 is installed in the threaded hole V, the cutout area K is aligned with the first fixing hole L1. The operator holds the grip 030 and moves it left and right to adjust the position of the battery pack 100. At this time, the alignment of the first fixing hole L1 and the second fixing hole L2 can be observed through the cutout area K. Adjust the battery pack 100 until the cutout area K is aligned with the second fixing hole L2, then stop adjusting. At this point, the first fixing hole L1 and the second fixing hole L2 are aligned. After the first fixing hole L1 and the second fixing hole L2 are aligned, the operator rotates the gripping part 030 to remove the battery pack fixture 000 from the threaded hole V, thus completing the positioning adjustment of the battery pack 100.

[0074] Battery pack 100 unpacking: Install two identical battery pack fixtures 000 into the two threaded holes V of battery pack 100. The operator holds the grip 030 and drags the battery pack 100 out of the battery rack 200 or the battery rack 200 in the container to achieve unpacking. When the battery pack 100 is heavy, add a hook and sling to hook onto the hollow area K of the battery pack fixture 000 and drag it out of the cluster.

[0075] It should be noted that a marking position can be set on both the battery pack fixture 000 and the periphery of the threaded hole V. By aligning the marking position on the battery pack fixture 000 with the marking position on the periphery of the threaded hole V, the battery pack 100 and the threaded hole V are threaded together. When the stud 010 is fully screwed into the threaded hole V, the hollow area K and the first fixing hole L1 are connected. Alternatively, taking the gripping part 030 as an example of a long rod, when the axis of the gripping part 030 is perpendicular to the axis of the threaded hole V, the stud 010 in the battery pack fixture 000 is screwed into the threaded hole V, so that when the stud 010 is fully screwed into the threaded hole V, the hollow area K and the first fixing hole L1 are connected.

[0076] In summary, the battery pack and battery frame can be separated by connecting the studs on the battery pack fixture to the threaded holes on the battery pack, combined with the gripping part. Furthermore, the connecting rod on the battery pack fixture located between the studs and the gripping part has a cutout area. After the studs are threaded to the threaded holes, the cutout area communicates with the first fixing hole of the battery pack. This allows observation of whether the first fixing hole on the battery pack and the second fixing hole on the battery frame are aligned, facilitating quick alignment of the first and second fixing holes for connecting the battery pack and battery frame. The designed battery pack fixture can be used not only to align the first fixing hole of the battery pack and the second fixing hole of the battery frame, but also to disassemble the battery pack from the battery frame, achieving versatility. This solves the problem of the wide variety of battery pack cluster removal and positioning adjustment fixtures available at repair sites.

[0077] This application also provides a battery system, including: a bracket and at least one battery pack 100, and a battery pack fixture 000 as described in the previous embodiment.

[0078] The battery pack 100 is mounted on a bracket. The battery pack 100 has a threaded hole V and a first fixing hole L1. The bracket has a second fixing hole L2 that communicates with the first fixing hole L1. The stud 010 in the battery pack fixture 000 is threadedly connected to the threaded hole V, and the hollow area K of the battery pack fixture 000 communicates with the first fixing hole L1.

[0079] The bracket may include multiple battery racks 200, and a battery pack 100 may be fixed on each battery rack 200.

[0080] Since the battery system in this embodiment includes the battery pack fixture 000 as described in the previous embodiment, it also has the advantages of the battery pack fixture 000 as described in the previous embodiment, so it will not be described again here.

[0081] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0082] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery pack tool, characterized by, include: Stud (010), connecting rod (020), and gripping part (030); One end of the stud (010) is connected to one end of the connecting rod (020), and the other end of the connecting rod (020) is connected to the grip (030). The connecting rod (020) has a hollow area (K) that penetrates the connecting rod (020) in the radial direction. The stud (010) is used to be threaded to the threaded hole (V) on the battery pack (100), and after the stud (010) is threaded to the threaded hole (V), the hollow area (K) is connected to the first fixing hole (L1) of the battery pack (100).

2. The battery pack tool of claim 1, wherein, The minimum distance between the hollow area (K) and the threaded hole (V) in the axial direction of the connecting rod (020) is less than or equal to the minimum distance between the first fixing hole (L1) and the threaded hole (V) in the axial direction of the threaded hole (V).

3. The battery pack tool of claim 1, wherein, The hollow area of ​​the hollow area (K) is greater than or equal to the area of ​​the first fixing hole (L1).

4. The battery pack tool of any one of claims 1 to 3, wherein, The hollow area (K) has a perforated structure.

5. The battery pack tooling according to any one of claims 1 to 3, characterized in that, The connecting rod (020) includes: a transfer frame (021), a first rod body (022), and a second rod body (023); the transfer frame (021) is located between the first rod body (022) and the second rod body (023), the two ends of the first rod body (022) are respectively connected to the transfer frame (021) and the gripping part (030), and the two ends of the second rod body (023) are respectively connected to the transfer frame (021) and the stud (010); The transfer frame (021) has the hollow area (K).

6. The battery pack tooling according to any one of claims 1 to 3, characterized in that, The gripping part (030) includes at least two gripping rods (031), one end of each gripping rod (031) is connected to the end of the connecting rod (020) away from the stud (010), and the axial direction of each gripping rod (031) is perpendicular to the axial direction of the connecting rod (020).

7. The battery pack tooling according to claim 6, characterized in that, The grip portion (030) includes two grip rods (031), and the two grip rods (031) are parallel in axis.

8. The battery pack tooling according to any one of claims 1 to 3 and 7, characterized in that, The radial dimension of the connecting rod (020) is greater than the radial dimension of the stud (010), and the axis of the connecting rod (020) coincides with the axis of the stud (010).

9. The battery pack tooling according to any one of claims 1 to 3 and 7, characterized in that, The axial length of the stud (010) is greater than or equal to the axial length of the threaded hole (V).

10. A battery system, characterized in that, include: A bracket and at least one battery pack (100), and a battery pack fixture (000) as described in any one of claims 1 to 9; The battery pack (100) is mounted on the bracket. The battery pack (100) has the threaded hole (V) and the first fixing hole (L1). The bracket has a second fixing hole (L2) that communicates with the first fixing hole (L1). The stud (010) in the battery pack fixture (000) is threadedly connected to the threaded hole (V), and the hollow area (K) of the battery pack fixture (000) communicates with the first fixing hole (L1).

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