Battery pack connecting device

Abstract

A battery pack connecting device belongs to the technical field of battery detection. The lower end of the top baffle is connected with the upper ends of vertical rods of four L-shaped column rods arranged in a rectangular array, and a main sleeve is fixed to the upper end of a horizontal rod of each L-shaped column rod. The top baffle comprises a fixed plate and a movable plate which are connected in a sliding and limiting manner, the L-shaped column rods are divided into two groups, one group is fixed rods, the other group is movable rods, the two fixed rods are correspondingly fixed on one side of the fixed plate and one side of the movable plate respectively, and the two movable rods are correspondingly connected with the other side of the fixed plate and the other side of the movable plate in a sliding manner. The device can adapt to battery packs of different specifications, the stability of the battery packs in the transportation, storage and detection process is improved, rapid connection and separation can be achieved, the working efficiency is improved, the connection firmness of the battery packs and the device is enhanced, damage caused by accidental factors is prevented, and the safety of the device is improved. All the mounting holes of the battery packs with different specifications can be effectively supported, and the universality and the applicability of the device are improved.

Description

Technical Field

[0001] The present invention relates to a battery pack connection device, belonging to the technical field of battery detection. Background Art

[0002] To ensure a reliable mechanical connection between the battery pack and the testing device or platform during functional testing and transportation, existing technologies generally use multiple sets of threaded fasteners to achieve axial fixation. Specifically, the mounting interface of the testing tool or vehicle chassis and the end face of the battery pack are equipped with an array of corresponding mounting holes. Operators insert bolts into the corresponding holes and tighten them with nuts to form a multi-point rigid connection structure.

[0003] However, this traditional connection method based on threaded fasteners has multiple technical drawbacks: 1. During assembly and disassembly, a single battery pack is typically equipped with multiple sets of threaded connections. Operators must complete complex procedures such as threading bolts one by one, tightening them multiple times, and applying torque to nuts. This significantly increases the time required for each assembly and disassembly operation, severely restricting the overall efficiency of the inspection process. 2. Repeated thread engagement operations will accelerate the wear process of the connection pair, especially in high-intensity testing scenarios. The plastic deformation and fretting wear on the thread surface will directly lead to the attenuation of the preload force, causing unexpected loosening of the connection interface. Under vibration conditions, it may even cause the fastener to fall off, which is a major safety hazard. 3. Threaded connections have strict requirements on assembly coaxiality and hole matching accuracy. When there is axial offset or radial misalignment in the mounting holes, forced assembly will cause the connection pair to bear additional bending moment. This non-uniform stress state will not only reduce the connection stiffness, but may also cause local deformation of the battery pack installation interface, ultimately causing technical problems such as abnormal detection sensor signal acquisition or data drift. Summary of the Invention

[0004] In order to solve the problems existing in the background technology, the present invention provides a battery pack connection device.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a battery pack connection device, comprising a main sleeve, a top baffle and an L-shaped column; the lower end of the top baffle is connected to the upper ends of the vertical rods of four L-shaped columns arranged in a rectangular array, and the upper end of the horizontal rod of each L-shaped column is fixed with a main sleeve.

[0006] Furthermore, the top baffle includes a fixed plate and a movable plate connected by a sliding limit, and the L-shaped column rods are divided into two groups, one group is a fixed rod, and the other group is a movable rod. The two fixed rods are respectively fixed on one side of the fixed plate and the movable plate, and the two movable rods are correspondingly slidably connected to the other side of the fixed plate and the movable plate.

[0007] Furthermore, a support positioning portion is fixed to the bottom surface of the fixed plate, a support moving portion is fixed to the bottom surface of the movable plate, and the support moving portion is connected to the support positioning portion in a sliding and limiting manner.

[0008] Furthermore, a locking connector is fixed to the lower end of the horizontal rod of each L-shaped column.

[0009] Furthermore, each of the locking connectors includes a main body, a movable part, a control ring and a locking rod; the left and right sides of the lower end of the main body are elastically connected to the corresponding movable part through corresponding elastic telescopic rods, and the side walls of each movable part are provided with a vertically arranged locking groove; the outer sliding sleeve of the main body is provided with a control ring, and the lower end of the control ring is fixed with a locking rod, and the locking rod is matched and plugged into the corresponding locking groove.

[0010] Furthermore, each of the locking connectors further includes a storage cover, and a vertically arranged limiting rod is fixed to the upper end of each of the storage covers, and the limiting rod is plugged into the corresponding locking groove.

[0011] Furthermore, a fixing assembly is provided at the upper end of each L-shaped column, and each fixing assembly includes a fixing portion and a fixing column fixed at the lower end thereof, and the fixing column is interference-fitted with the corresponding main sleeve.

[0012] Furthermore, a lower adjusting rod is respectively installed between the fixed rod connected to the fixed plate and the movable rod, and between the fixed rod connected to the movable plate and the movable rod, an upper adjusting rod is installed between the two fixed components at the lower end of the fixed plate and between the two fixed components at the lower end of the movable plate, each of the upper adjusting rods has the same structure as the lower adjusting rod, and the outer side of the lower adjusting rod is slidingly limited with N auxiliary support parts; the outer side of each upper adjusting rod is slidingly limited with N auxiliary fixing parts; N is positive; each auxiliary supporting part includes a support plate and a support part; the upper end of the support plate is fixed with an auxiliary sleeve; each auxiliary fixing part includes a connecting plate and a connecting part; the lower end of the connecting plate is fixed with a fixed column; the fixed column and the corresponding auxiliary sleeve are interference-fitted.

[0013] Furthermore, each of the fixing portions and the horizontal rod of the corresponding L-shaped column are provided with corresponding locking holes.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts a sliding connection design between the fixed plate and the movable plate, which can flexibly adapt to battery packs of different specifications and support the battery pack from multiple positions at the same time. Compared with the existing technology, the number of connection points and support points is increased, which improves the stability of the battery pack during transportation, storage and testing, and effectively avoids the problem of battery pack deformation caused by insufficient support.

[0015] 2. The present invention adopts a locking connector to replace the traditional bolt and nut structure. When the staff connects or separates the present invention with the test device, there is no need to tediously disassemble the bolts and nuts. Quick connection and separation can be achieved, which greatly reduces the workload and improves work efficiency.

[0016] 3. The present invention addresses the operational difficulties when separating the battery pack from the test device. The design of the storage cover can lock the movable part when the locking connector is connected to the mounting hole, ensuring that the battery pack and the test device can be separated smoothly, avoiding the situation where the battery pack cannot be operated due to the limitation of the mounting hole.

[0017] 4. The present invention firmly clamps the battery pack mounting hole through the fixing assembly, thereby enhancing the connection firmness between the battery pack and the device, ensuring the safety of the battery pack in various states, and preventing damage due to unexpected factors.

[0018] 5. The present invention can be flexibly adjusted according to the battery pack model and the number of mounting holes, ensuring that all mounting holes of battery packs of different specifications can be effectively supported, thereby improving the versatility and applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 yes Figure 1 Bottom view of Figure 3 Schematic diagram of the connection relationship between the upper adjustment rod, the auxiliary fixing part and the fixing assembly; Figure 4 is a schematic diagram of the connection relationship between the auxiliary support portion and the locking connector; Figure 5 This is a schematic diagram of the structure of the locking connector in the unlocked state; Figure 6 is a schematic diagram of the structure of the locking connector in a locked state; Figure 7 It is a structural diagram of the locking connector and the storage cover when they are in cooperation. DETAILED DESCRIPTION

[0020] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] A battery pack connection device includes a main sleeve 111, a top baffle and an L-shaped column; the lower end of the top baffle is connected to the upper ends of the vertical rods of four L-shaped columns arranged in a rectangular array, and the upper end of the horizontal rod of each L-shaped column is fixed with the main sleeve 111.

[0022] The top baffle protects and supports the target battery pack. The main sleeve 111 plugs into the battery pack's pre-defined mounting hole, with the axis of the main sleeve 111 aligned with the axis of the mounting hole. The L-shaped column is a support assembly that detachably connects to both ends of the battery pack. When the device is hoisted and moved upward, the L-shaped column and main sleeve 111 support the battery pack's mounting hole, allowing the device to lift and move the battery pack.

[0023] Furthermore, the top baffle includes a fixed plate 1 and a movable plate 2 connected by a plug-in sliding limiter. The L-shaped columns are divided into two groups, one of which is a fixed rod 11 and the other is a movable rod 13. The two fixed rods 11 are respectively fixed to one side of the fixed plate 1 and the movable plate 2, and the two movable rods 13 are respectively slidably connected to the other side of the fixed plate 1 and the movable plate 2 via corresponding slide grooves 12 provided on the bottom surfaces of the fixed plate 1 and the movable plate 2, thereby achieving multi-dimensional dimensional adjustment of the connection device to accommodate the use requirements of battery packs of different sizes. The slide grooves 12 are often T-slots or I-slots, so that the movable rods 13 can slide within the slide grooves 12 without being pulled out of the slide grooves 12.

[0024] Furthermore, in order to ensure the firmness of the connection between the fixed plate 1 and the movable plate 2, a support positioning portion 15 is fixed to the bottom surface of the fixed plate 1, and two parallel supporting movable portions 24 are fixed to the bottom surface of the movable plate 2. The supporting movable portions 24 are slidingly limitedly connected to the supporting positioning portion 15, and the supporting movable portions 24 are symmetrically arranged at both ends of the supporting positioning portion 15. The supporting movable portions 24 are used to support the movable plate 2 to ensure that after the device is connected to the battery pack, the movable plate 2 will not produce irreversible deformation due to the large compressive force during the lifting process.

[0025] Furthermore, a locking connector is fixed to the lower end of the horizontal rod of each L-shaped column. The locking connector is a locking assembly for connecting to the test device, which is used to replace the common bolt and nut structure, so that the staff can quickly connect the device to the test device, reduce the workload of the staff in disassembling the bolt and nut assembly, and maintain the firmness of its connection with the test device.

[0026] Furthermore, each locking connector comprises a main body 5, a movable portion 51, a control ring 52, and a locking rod 521. The left and right sides of the lower end of the main body 5 (the end facing the test device) are elastically connected to the corresponding movable portion 51 via corresponding elastic telescopic rods (including telescopic rods and compression springs, which are prior art and will not be described in detail here). The sidewalls of each movable portion 51 are provided with a vertical locking groove 511. The two movable portions 51 are symmetrically arranged. A control ring 52 is slidably mounted on the outer side of the main body 5. The lower end of the control ring 52 is fixed with a locking rod 521, which mates with the corresponding locking groove 511.

[0027] When the control ring 52 is downwardly aligned with the movable portion 51, the locking rods 521 are inserted into the corresponding locking grooves 511, minimizing the distance between the two movable portions 51, thereby embracing the retracted state. At this point, the distance between the two movable portions 51 is no greater than the diameter of the main body 5. The diameter of the main body 5 is the same as the diameter of the mounting hole of the test device.

[0028] When connecting to the battery pack, the movable plate 2 is pulled so that the distance between the fixed plate 1 and the ends of the movable plate 2 is equal to or slightly greater than the length of the battery pack, making it easier for the operator to operate. The main sleeves 111 are then inserted into the corresponding mounting holes of the battery pack, making it easier for the operator to carry the battery pack. At the same time, the control ring 52 is lowered to align with the movable portion 51, and the locking rods 521 are inserted into the corresponding locking grooves 511, so that the two movable portions 51 are stored.

[0029] When the battery pack needs to be tested, the device is moved to a test device (such as a collision device or a pressure test device, etc.) by hoisting, and multiple locking connectors are respectively plugged into the mounting holes on the test device. During the insertion process, the control ring 52 is pushed upward to separate from the movable part 51, releasing its locking state on the movable part 51. The movable parts 51 at both ends are pushed by the compression springs to move against the inner wall of the mounting hole of the test device, ensuring the firmness of the connection between them and the mounting hole.

[0030] When the battery pack needs to be separated from the test device, the movable parts 51 at both ends are pushed inward to shorten the distance between the two. The locking connector is pulled upward using the lifting device to separate the mounting hole, thereby achieving rapid separation of the battery pack from the test device.

[0031] Furthermore, when the battery pack is separated from the test device, the two movable parts 51 of the multiple main bodies 5 need to be locked, and the mounting hole of the test device restricts the movement of the control ring 52, making it impossible to lock the movable part 51 when it is connected to the test device; in order to solve the above problem, each of the locking connectors also includes a storage cover 53 that is arranged in conjunction with the movable part 51, and a vertically arranged limit rod 531 is fixed to the upper end of each storage cover 53, and the limit rod 531 is plugged into the corresponding locking groove 511.

[0032] When the battery pack needs to be separated from the test device, the staff uses the same number of storage covers 53 as the main body 5 to store and lock the movable parts 51 connected to each main body 5 in turn, thereby ensuring the rapid separation of the locking connector from the test device.

[0033] Furthermore, in order to ensure that the battery pack can be tightly connected to the L-shaped column during the lifting and transportation of the device and will not fall accidentally, a fixing component is provided at the upper end of each L-shaped column, and each fixing component includes a fixing portion 31 and a fixing column 311 fixed at its lower end, and the fixing column 311 is interference-fitted with the corresponding main sleeve 111.

[0034] The fixing column 311 and the main sleeve 111 cooperate to form a cavity for clamping the battery pack mounting hole, so that when the device is in the storage state, transportation state, and connected to the test device for corresponding project testing, the battery pack mounting hole can be stably connected in the cavity, ensuring the firm connection between the battery pack and the device, thereby ensuring that the battery pack will not be damaged by unexpected factors.

[0035] Furthermore, due to the battery pack's inherently high mass, multiple mounting holes are typically symmetrically positioned at both ends of the battery pack to ensure a secure connection between the pack and the test device or vehicle. The mounting holes at both ends of the battery pack are connected via a main sleeve 111. While this method ensures the battery pack's connection to the L-shaped column, enabling transportation of the battery pack and its installation on the test device for testing, the relatively small number of connection points relative to the pack's own weight presents a safety hazard during transport. Furthermore, the battery pack's insufficient support points can cause deformation due to gravity during lifting and handling. In order to solve the above problems, lower adjusting rods are respectively installed between the fixed rod 11 and the movable rod 13 connected to the fixed plate 1 and between the fixed rod 11 and the movable rod 13 connected to the movable plate 2. An upper adjusting rod 32 is installed between the two fixed components at the lower end of the fixed plate 1 and between the two fixed components at the lower end of the movable plate 2. Each of the lower adjusting rods includes a positioning sleeve 14 and a light rod 141. The positioning sleeve 14 is fixedly connected to the fixed rod 11, and the light rod 141 is slidably connected in the positioning sleeve 14. The axis line of the light rod 141 is collinear with the axis line of the positioning sleeve 14. One end of the light rod 141 is inserted into the positioning sleeve 14, and the other end is fixedly connected to the end face of the movable rod 13 facing the fixed rod 11, ensuring that when the distance between the fixed rod 11 and the movable rod 13 changes, the positioning sleeve 14 and the light rod 141 always remain connected. A plurality of first connection holes 142 are evenly spaced on the positioning sleeve 14 and the polished rod 141. The support plate 4 and the support portion 42 are provided with through holes of equal size and aligned along their axes. Locking assemblies are provided on these through holes to secure the support plate 4 and the support portion 42, ensuring a secure connection during battery pack testing. The upper adjustment rod 32 shares the same structure as the lower adjustment rod and will not be further described. The outer side of each lower adjustment rod is provided with N auxiliary support parts in a sliding and limiting manner; the outer side of each upper adjustment rod 32 is provided with N auxiliary fixing parts in a sliding and limiting manner; N is a positive integer, N=the number of mounting holes on one side of the battery pack-2; each of the auxiliary support parts includes a support plate 4 and a support part 42 that are detachably fixed; the detachable fixed connection facilitates the loading and unloading of the auxiliary support parts; the upper end of the support plate 4 is fixed with an auxiliary sleeve 41; the auxiliary sleeve 41 is plugged into the mounting hole of the battery pack, and a clamping cavity for being sleeved on the adjustment rod is formed between the support plate 4 and the support part 42. The number of auxiliary support parts is adjusted according to the model of different battery packs to ensure that all mounting holes on the battery pack can be supported. Each of the auxiliary fixing parts includes a connecting plate 33 and a connecting part 34 that are detachably fixed; the detachable fixed connection facilitates the loading and unloading of the auxiliary fixing parts; the lower end of the connecting plate 33 is fixed with a fixing column 311; the fixing column 311 is interference-fitted with the corresponding auxiliary sleeve 41.

[0036] The auxiliary sleeve 41 is plugged into the mounting hole of the battery pack, and a clamping cavity for being sleeved on the adjustment rod is formed between the support plate 4 and the support part 42. The number of auxiliary support parts is adjusted according to the model of different battery packs to ensure that all mounting holes on the battery pack can be supported.

[0037] During the connection process between the device and the battery pack, the corresponding number of auxiliary support and auxiliary fixing parts is selected based on the number of mounting holes on the battery pack. The support plate 4, combined with the same number of support parts 42, is then sleeved onto the positioning sleeve 14 or the polished rod 141. The auxiliary sleeve 41 is then inserted into the corresponding mounting holes to secure the position. The connecting plate 33 and the corresponding number of connecting parts 34 are installed on the upper adjustment rod 32. The connecting plates 33 and the supporting plates 4 have the same number and position, thus improving the connection between the device and the battery pack.

[0038] Furthermore, in order to ensure the connection between the L-shaped column and the fixing assembly is firm, each fixing portion 31 and the corresponding horizontal rod of the L-shaped column are provided with a locking hole, and the locking hole is used to insert the connecting assembly. Preferably, the connecting assembly is a bolt and nut assembly.

[0039] During the installation process of the support assembly and the battery pack, the multiple mounting holes set on the battery pack are respectively inserted into the corresponding main sleeves 111, and the fixing parts 31 are respectively plugged into the main sleeves 111, and the corresponding locking holes are connected using the connecting assembly to ensure the firmness of the connection between the fixing parts 31 and the main sleeve 111.

[0040] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0041] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A battery pack connection device, characterized in that: It comprises a main sleeve (111), a top baffle and an L-shaped column; the lower end of the top baffle is connected to the upper ends of the vertical rods of four L-shaped columns arranged in a rectangular array, and the upper end of the horizontal rod of each L-shaped column is fixed with the main sleeve (111).

2. The battery pack connection device according to claim 1, characterized in that: The top baffle comprises a fixed plate (1) and a movable plate (2) connected by sliding limits, and the L-shaped column rods are divided into two groups, one group of which is a fixed rod (11) and the other group is a movable rod (13), the two fixed rods (11) are respectively fixed on one side of the fixed plate (1) and the movable plate (2), and the two movable rods (13) are slidably connected to the other side of the fixed plate (1) and the movable plate (2).

3. The battery pack connection device according to claim 2, characterized in that: A support positioning portion (15) is fixed to the bottom surface of the fixed plate (1), and a support moving portion (24) is fixed to the bottom surface of the movable plate (2). The support moving portion (24) is connected to the support positioning portion (15) in a sliding and limiting manner.

4. The battery pack connection device according to claim 1, characterized in that: The lower end of the horizontal rod of each L-shaped column is fixed with a locking connector.

5. The battery pack connection device according to claim 4, characterized in that: Each of the locking connectors comprises a main body (5), a movable part (51), a control ring (52) and a locking rod (521); the left and right sides of the lower end of the main body (5) are elastically connected to the corresponding movable part (51) via corresponding elastic telescopic rods, and the side wall of each movable part (51) is provided with a vertically arranged locking groove (511); the outer side of the main body (5) is slidably sleeved with the control ring (52), and the lower end of the control ring (52) is fixed with a locking rod (521), and the locking rod (521) is matched and plugged with the corresponding locking groove (511).

6. The battery pack connection device according to claim 5, characterized in that: Each of the locking connectors further comprises a storage cover (53), and a vertically arranged limiting rod (531) is fixed to the upper end of each of the storage covers (53), wherein the limiting rod (531) is plugged into the corresponding locking groove (511).

7. The battery pack connection device according to claim 1, characterized in that: The upper end of each L-shaped column is provided with a fixing assembly, and each fixing assembly comprises a fixing portion (31) and a fixing column (311) fixed at the lower end thereof, and the fixing column (311) is interference-connected with the corresponding main sleeve (111).

8. The battery pack connection device according to claim 7, characterized in that: A lower adjustment rod is installed between the fixed rod (11) and the movable rod (13) connected to the fixed plate (1) and between the fixed rod (11) and the movable rod (13) connected to the movable plate (2). An upper adjustment rod (32) is installed between the two fixed components at the lower end of the fixed plate (1) and between the two fixed components at the lower end of the movable plate (2). Each upper adjustment rod (32) has the same structure as the lower adjustment rod. The outer side of the lower adjustment rod is provided with N auxiliary support parts in a sliding limit sleeve. The outer side of each upper adjustment rod (32) is provided with N auxiliary fixing parts in a sliding limit sleeve. N is a positive integer. Each auxiliary supporting part includes a support plate (4) and a support part (42). An auxiliary sleeve (41) is fixed to the upper end of the support plate (4). Each auxiliary fixing part includes a connecting plate (33) and a connecting part (34). A fixing column (311) is fixed to the lower end of the connecting plate (33). The fixing column (311) is interference-fitted with the corresponding auxiliary sleeve (41).

9. The battery pack connection device according to claim 8, characterized in that: Each of the fixing portions (31) and the horizontal rod of the corresponding L-shaped column are provided with corresponding locking holes.

Images