Lithium battery fixing support

Abstract

The utility model belongs to the technical field of battery supports, and particularly relates to a lithium battery fixing support which comprises a supporting frame, supporting plates are symmetrically and fixedly connected to the positions, close to the edges of the two ends in the width direction, of the top of the supporting frame and extend in the length direction of the supporting frame, and two positioning cross beams are symmetrically arranged on the top of the supporting frame in the length direction of the supporting frame. The two ends of each positioning cross beam are fixedly connected with the inner walls of the two supporting plates respectively, side wire arrangement grooves are formed in the two ends of each supporting plate, tab connecting tables are fixedly connected to the two ends between the two supporting plates, and tab connecting assemblies are arranged on the tab connecting tables; the utility model has the advantages of reasonable structural design, more stable support and neat wiring, and effectively prevents the occurrence of short circuit.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery brackets, and specifically relates to a lithium battery fixing bracket. Background Art

[0002] At present, the main energy sources of automobiles are fossil fuels such as gasoline and diesel. 60% of fossil fuels are consumed by automobiles, and automobile exhaust pollutes the air environment greatly. Currently, the main alternative energy source for automobiles is lithium-ion batteries.

[0003] New energy vehicles are currently in the ascendant, and their form of replacing fuel vehicles is becoming increasingly obvious. Currently, among new energy vehicles, electric vehicles and hybrid electric vehicles occupy the mainstream of the market, and the main energy source of electric vehicles and hybrid electric vehicles is rechargeable lithium-ion batteries.

[0004] The lithium battery bracket is the main structure for connecting multiple lithium batteries in series and parallel. Currently, there are many manufacturers producing rechargeable lithium batteries, and the battery specifications produced by each manufacturer are not the same. As a result, the batteries need to be installed in brackets of different specifications to achieve the assembly of multiple batteries, resulting in problems such as a large variety of brackets, cumbersome assembly, poor versatility, poor connection accuracy, and high production costs.

[0005] For example, in the Chinese patent with the patent publication number CN220420754U applied by the main inventor of this application on June 7, 2023, a general lithium battery fixing bracket is disclosed, which includes a bracket body frame. Inside the bracket body frame, there is a battery bracket inner frame for loading batteries. Both ends of the bracket body frame have a head pole ear connection platform and a tail pole ear connection platform. The sides of the head pole ear connection platform and the tail pole ear connection platform are the bearing platforms at both ends of the battery core. A positioning crossbeam is connected to the bracket body frame. The head pole ear connection platform has a first groove inside, and a pole ear substrate positioning post is fixedly arranged on the outer surface of the head pole ear connection platform. Two head pole ear connection substrate threaded holes are fixedly arranged on the head pole ear connection platform. The two head pole ear connection substrate threaded holes are fixedly arranged with the head pole ear connection platform. Threaded sleeves are embedded inside the head pole ear connection substrate threaded holes. Threads are arranged inside the threaded sleeves, and the threaded sleeves and the head pole ear connection platform are of an integral structure. Summary of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a lithium battery fixing bracket with reasonable structural design, more stable support, neat wiring, and effectively preventing the occurrence of short-circuit situations.

[0007] To solve the above technical problem, the utility model provides the following technical solutions:

[0008] A lithium battery fixing bracket, comprising a support frame. Symmetrically and fixedly connected to the edges at both ends of the top of the support frame near its width direction are support plates, and the support plates extend along the length direction of the support frame. Two positioning cross beams are symmetrically arranged along the length direction of the top of the support frame, and both ends of each positioning cross beam are fixedly connected to the inner walls of the two support plates. Side wire grooves are opened at both ends of the support plates. At both ends between the two support plates, there are fixedly connected ear connection platforms, and ear connection components are arranged on the ear connection platforms;

[0009] The ear connection component includes two ear connection substrate nut counterbores symmetrically arranged at the middle position of the ear connection platform. On the side walls of the two ear connection platforms close to each other and corresponding to the ear connection substrate nut counterbores, there are nut seats, and the bottoms of the nut seats are integrally connected to the top of the support frame. Ear connection substrate screw through holes are opened on the nut seats, and the ear connection substrate nut counterbores are concentrically connected to the ear connection substrate screw through holes. On the outside of the two ear substrate positioning columns, the ear connection platform is symmetrically provided with two L-shaped wire arranging buckles.

[0010] The following is the further optimization of the above technical solution by the present utility model:

[0011] On the side walls of the two ear connection platforms facing away from each other, there are symmetrically arranged ear substrate positioning columns, and the ear substrate positioning columns are located between the corresponding ear connection substrate nut counterbores and the wire arranging buckles.

[0012] The ear substrate positioning column is in a stepped shape, and the diameter of the ear substrate positioning column decreases successively along the direction away from the ear connection platform.

[0013] The wire arranging buckle and the ear connection platform are integrally injection molded.

[0014] At the four corners of the support frame, there are provided frame longitudinal positioning columns. At the four corners of the support plates far from the top of the support frame, there are provided frame longitudinal positioning holes, and the frame longitudinal positioning columns are adapted to the frame longitudinal positioning holes.

[0015] The frame longitudinal positioning column is in a stepped shape, and the diameter of the frame longitudinal positioning column decreases successively along the direction away from the support frame.

[0016] At the four corners of the top of the support frame and between the two support plates, there are through opened lead screw through holes for the lead screw for fixing the battery module to pass through.

[0017] At the top of the ear connection platform near its middle position, there is opened an ear groove. After two lithium battery fixing brackets are arranged side by side, the ears pass through the ear groove.

[0018] At the top of the support plate near its middle position, there is opened a heat dissipation groove. After two lithium battery fixing brackets are arranged side by side, the heat of the battery is discharged from the heat dissipation groove.

[0019] The nut counterbore on the tab connection substrate is a hexagonal hole; the screw through-hole on the tab connection substrate is a circular hole, and the diameter of the screw through-hole on the tab connection substrate is smaller than the diameter of the inscribed circle of the nut counterbore on the tab connection substrate.

[0020] The nut counterbore on the tab connection substrate of the present utility model is concentrically connected to the screw through-hole on the tab connection substrate of the nut seat, providing an accurate connection position for the tabs of the lithium battery, thus ensuring the reliability and stability of the tab connection, reducing the contact resistance, and improving the charge and discharge efficiency of the battery.

[0021] The present utility model is provided with two nut counterbores on the tab connection substrate symmetrically arranged at the middle position of the tab connection platform, facilitating the connection operation of the positive and negative tabs of the lithium battery and making the connection process more convenient and efficient.

[0022] The present utility model is provided with two L-shaped wire harness clips symmetrically arranged outside the two tab substrate positioning posts on the tab connection platform. It can not only effectively organize and fix the wire harness of the lithium battery protection board, avoid the wire harness being in a mess, reduce the mutual interference and short-circuit risk between wire harnesses; at the same time, the L-shaped wire harness clip can better adapt to the wire harness requirements at different angles, improving the flexibility of wire harness management.

[0023] The side wire troughs at both ends of the support plate of the present utility model provide a channel for fixing the wire harness of the lithium battery protection board. It not only enables the wire harness for fixing the lithium battery protection board to pass through the bracket neatly, avoiding the entanglement and confusion of the connecting wires, but also the setting of the side wire trough facilitates the maintenance and replacement of the wire harness, improving the convenience of use.

[0024] Adopting the above technical solution, the structure of the present utility model is reasonably designed, the support is more stable, the wiring is tidy, and the occurrence of short-circuit situations is effectively prevented.

[0025] The present utility model will be further described below in conjunction with the drawings and embodiments. Description of the Drawings

[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0027] Figure 2 It is a schematic diagram of the overall structure of another angle of an embodiment of the present utility model;

[0028] Figure 3 It is a top view of an embodiment of the present utility model;

[0029] Figure 4 It is a side view of an embodiment of the present utility model.

[0030] In the figure: 1 - support frame; 2 - support plate; 3 - positioning crossbeam; 4 - side wire trough; 5 - tab connection platform; 6 - tab connection base plate nut counterbore; 7 - nut seat; 8 - tab connection base plate screw through hole; 9 - wire clip; 10 - tab base plate positioning post; 11 - frame longitudinal positioning post; 12 - frame longitudinal positioning hole; 13 - tab groove; 14 - heat dissipation groove; 15 - lead screw through hole. Detailed implementation manner

[0031] As Figures 1-4 shown, a fixing bracket for a lithium battery includes a support frame 1. Symmetrically and fixedly connected to both ends of the top of the support frame 1 near the edges in the width direction are support plates 2, and the support plates 2 extend along the length direction of the support frame 1. Two positioning crossbeams 3 are symmetrically arranged along the length direction of the top of the support frame 1, and both ends of each positioning crossbeam 3 are fixedly connected to the inner walls of the two support plates 2. Side wire troughs 4 are provided at both ends of the support plates 2. At both ends between the two support plates 2, tab connection platforms 5 are fixedly connected, and tab connection assemblies are arranged on the tab connection platforms 5.

[0032] The tab connection assembly includes two tab connection base plate nut counterbores 6 symmetrically arranged at the middle position of the tab connection platform 5. Nut seats 7 are arranged at positions corresponding to the tab connection base plate nut counterbores 6 on the side walls of the two tab connection platforms 5 close to each other, and the bottom of the nut seat 7 is integrally connected to the top of the support frame 1. Tab connection base plate screw through holes 8 are provided on the nut seats 7, and the tab connection base plate nut counterbores 6 and the tab connection base plate screw through holes 8 are concentrically connected. On the outside of the two tab base plate positioning posts 10, two L-shaped wire clips 9 are symmetrically arranged on the tab connection platform 5.

[0033] With such a design, firstly, the support frame 1 provides a stable foundation for the entire bracket, so that it can not only evenly bear the weight of the lithium battery, but also insulate between the two battery cells, thus ensuring stability in various usage environments.

[0034] Secondly, the support plates 2 are symmetrically and fixedly connected to both ends of the top of the support frame 1 near the edges in the width direction and extend along the length direction of the support frame 1, increasing the longitudinal support force of the bracket and effectively preventing the lithium battery from shaking and deforming in the length direction.

[0035] Thirdly, the two positioning crossbeams 3 are symmetrically arranged along the length direction of the top of the support frame 1, and both ends are fixedly connected to the inner walls of the two support plates 2, further enhancing the overall structural stability of the bracket. At the same time, the positioning crossbeams 3 can limit the movement of the lithium battery in the length direction, making the lithium battery more firmly fixed in the fixing bracket.

[0036] Fourth, the ear connection substrate nut counterbore 6 and the ear connection substrate screw through-hole 8 on the nut seat 7 are concentrically connected, providing an accurate connection position for the ear of the lithium battery, thus ensuring the reliability and stability of the ear connection, reducing the contact resistance, and improving the charge and discharge efficiency of the battery.

[0037] Fifth, the two ear connection substrate nut counterbores 6 symmetrically arranged at the middle position of the ear connection platform 5 facilitate the connection operation of the positive and negative ears of the lithium battery, making the connection process more convenient and efficient.

[0038] Sixth, two L-shaped cable clips 9 are symmetrically arranged on the outer sides of the two ear connection substrate positioning posts 10 of the ear connection platform 5. They can not only effectively organize and fix the cables of the lithium battery protection board, avoid the cables being in a mess, reduce the mutual interference between the cables and the risk of short circuit; at the same time, the L-shaped cable clips 9 can better adapt to the cable requirements at different angles, improving the flexibility of cable management.

[0039] Seventh, the side cable grooves 4 at both ends of the support plate 2 provide a channel for fixing the cables of the lithium battery protection board. It not only enables the cables for fixing the lithium battery protection board to pass through the bracket neatly, avoiding the entanglement and confusion of the connecting wires, but also the setting of the side cable grooves 4 facilitates the maintenance and replacement of the cables, improving the convenience of use.

[0040] In addition, the position of the protection board determines whether the cable passes through the cable clip 9 or the side cable groove 4.

[0041] On the mutually facing side walls of the two ear connection platforms 5, ear connection substrate positioning posts 10 are symmetrically arranged, and the ear connection substrate positioning posts 10 are located between the corresponding ear connection substrate nut counterbores 6 and the cable clips 9.

[0042] With such a design, first, the position of the ear connection substrate positioning posts 10 is set on the mutually facing side walls of the ear connection platforms 5 and is located between the corresponding ear connection substrate nut counterbores 6 and the cable clips 9, which can provide a clear positioning point for the ear connection substrate. Thus, when installing the lithium battery, the ear connection substrate can be accurately aligned with the ear connection substrate nut counterbore 6, ensuring the accuracy and stability of the ear connection.

[0043] Second, the symmetrically arranged ear connection substrate positioning posts 10 can keep the ear connection substrate balanced during the installation process, avoiding tilting or offsetting, thereby improving the overall installation quality of the lithium battery.

[0044] Thirdly, the design of the tab substrate positioning post 10 at the position between the tab connection substrate nut counterbore 6 and the cable clip 9 makes full use of the space, making the structure of the entire bracket more compact. Thus, not only can more functions be realized within a limited space, improving the space utilization rate of the bracket, but also the length of the connecting wire can be reduced, the resistance and energy loss can be decreased, and the charge and discharge efficiency of the battery can be improved.

[0045] The tab substrate positioning post 10 is in a stepped shape, and the diameter of the tab substrate positioning post 10 decreases successively along the direction away from the tab connection platform 5.

[0046] With such a design, it is convenient to pass the tab substrate positioning post 10 through the mounting hole on the tab connection substrate.

[0047] The cable clip 9 and the tab connection platform 5 are integrally injection-molded.

[0048] With such a design, firstly, the overall structural strength is enhanced, there are no connection gaps and weak points, it can better withstand the cable tension and external impact force, ensuring that the cable clip 9 does not break or loosen during use. At the same time, the stability is improved, and the vibration and shaking generated during the operation of the lithium battery will not affect the position and function of the cable clip 9, ensuring reliable cable fixation.

[0049] Secondly, the production process is simplified, the cost is reduced, there is no need for complex assembly processes, the production efficiency is improved, the number of parts is reduced, the complexity of inventory management and the supply chain is decreased, and there is no need for additional connecting parts or fixing devices, further reducing the cost. It can also reduce potential quality problems and improve the product yield rate.

[0050] Frame longitudinal positioning posts 11 are arranged at the four corners of the support frame 1, and frame longitudinal positioning holes 12 are arranged at the four corners of the support plate 2 away from the top of the support frame 1, and the frame longitudinal positioning posts 11 are adapted to the frame longitudinal positioning holes 12.

[0051] With such a design, it is not only convenient for assembly and disassembly. During installation, after the positioning post is inserted into the positioning hole for preliminary positioning, it is fixed by other means. During disassembly, after the connection is released, the positioning post can be pulled out, which is convenient for maintenance and replacement, improving the use convenience. At the same time, it can also improve the production efficiency and accuracy, providing clear positioning points for production workers to quickly assemble, reducing the adjustment and calibration time, and the dimensional and positional accuracy can be guaranteed by the mold, ensuring consistent assembly accuracy, improving the product quality and reliability, and reducing installation problems caused by dimensional deviations.

[0052] The frame longitudinal positioning post 11 is in a stepped shape, and the diameter of the frame longitudinal positioning post 11 decreases successively along the direction away from the support frame 1.

[0053] With such a design, first, the small-diameter end of the longitudinal positioning column 11 of the frame is easy to enter the longitudinal positioning hole, playing a guiding role, reducing the insertion resistance and the difficulty of alignment, facilitating the operator to judge the insertion direction and position, and improving the assembly efficiency and accuracy. Second, when inserting, the large-diameter part of the longitudinal positioning column 11 of the frame gradually contacts the positioning hole, realizing step-by-step positioning, ensuring that the relative positions of the support frame 1 and the support plate 2 are more accurate, reducing the assembly error. The stepped structure can also form a limit, improving the positioning accuracy and stability. In addition, the large-diameter part of the longitudinal positioning column 11 of the frame has a large contact area with the support plate 2, providing stronger supporting force and friction force, making the connection more firm, not easy to loosen and come off, improving the connection reliability of the bracket, and at the same time dispersing the stress at the connection part and reducing the risk of structural damage.

[0054] Through holes 15 for screws are respectively formed through the four corners at the top of the support frame 1 and located between the two support plates 2. The through holes 15 for screws are used for the screws for fixing the battery module to pass through.

[0055] With such a design, when installing the battery module, the screw can be directly passed through the through hole 15 for screws, and then fastened by fixing parts such as nuts. The operation is simple and convenient, and the fixed installation of the battery module can be quickly realized.

[0056] An ear groove 13 is formed at the top of the tab connection platform 5 near the middle position thereof. After two lithium battery fixing brackets are arranged side by side, the tabs pass through the ear groove 13.

[0057] With such a design, first, a special channel is provided for the tabs. When two brackets are used side by side, the tabs pass through the groove, making the tab connection neat and orderly, avoiding chaos and entanglement during connection, improving the connection efficiency and reliability, and at the same time protecting the tabs, preventing external collision and friction, reducing the risk of damage, and the shape of the groove limits the movement range of the tabs, making them stably connected to the bracket.

[0058] Second, the versatility and flexibility of the bracket are enhanced. It is applicable to the parallel connection of multiple lithium batteries. The tab connection is facilitated through the groove to realize the expansion and combination of the battery pack, increasing the versatility to meet the requirements of different scenarios, and also making the installation layout of the bracket more flexible. The arrangement of the lithium batteries can be adjusted according to the actual situation, making full use of the space and improving the integration degree of the battery pack.

[0059] A heat dissipation groove 14 is formed at the top of the support plate 2 near the middle position thereof. After two lithium battery fixing brackets are arranged side by side, the heat of the battery is discharged from the heat dissipation groove 14.

[0060] With such a design, a discharge channel is provided for the heat of the battery, avoiding the overheating of the battery, reducing the adverse effects of high temperature on the performance and life of the battery, and at the same time preventing the heat accumulation, keeping the overall temperature of the battery pack stable, and improving the reliability and safety.

[0061] The nut counterbore 6 of the tab connection substrate is a hexagonal hole, and the nut counterbore 6 of the tab connection substrate is used to hold the mating nut.

[0062] With this design, firstly, the hexagonal shape provides more contact area and angle limitation than a circular shape, preventing the nut or the connection substrate from rotating and shifting, ensuring tight and reliable contact between the tab and the connection substrate, reducing the contact resistance, and enhancing the performance and reliability of the lithium battery.

[0063] Secondly, the hexagonal shape makes it difficult for the operating tool to slip, facilitating the screwing in and out of the nut, being conducive to quick operation during maintenance and replacement, and improving work efficiency.

[0064] Thirdly, the hexagon has better mechanical properties, can withstand greater pressure and tensile force, reduces the risk of deformation and damage of the counterbore, and improves the stability and durability of the bracket.

[0065] Finally, the hexagonal hole can accommodate the nut more tightly, saving space, making the bracket more compact and efficient, and being applicable to scenarios with limited space.

[0066] The screw through-hole 8 of the tab connection substrate is a circular hole, and the diameter of the screw through-hole 8 of the tab connection substrate is smaller than the diameter of the inscribed circle of the nut counterbore 6 of the tab connection substrate.

[0067] With this design, firstly, the circular hole matches the shape of the connecting component, accommodates the connecting component more tightly and accurately, reduces the clearance and looseness, and the small-diameter hole cooperates with the counterbore to limit the connecting component, preventing over-insertion or deviation, and ensuring accurate and reliable connection.

[0068] Secondly, the small-diameter hole makes the bracket structure more compact. It not only facilitates the arrangement of components in a limited space, improves space utilization, makes the bracket small and light and applicable to various scenarios with limited space, but also can reduce the material usage, lower the cost, and improve the overall strength and stability.

[0069] In addition, enhancing the protection performance and safety, the small-diameter hole can prevent impurities and foreign objects from entering the connection hole, avoid interfering with and damaging the tab connection, reduce the risk of electric shock, while increasing the contact pressure between the connecting component and the substrate, improving the connection reliability and durability, better withstanding vibration and shock, and reducing the probability of failures caused by loosening.

[0070] The tab substrate is a four-hole metal plate with positioning holes and screw through-holes (or threaded holes), which is suitable for using a screw pressing piece to press the tab, or a two-hole metal flat plate with only positioning holes and no screw through-holes, which is suitable for directly laser welding the tab. The two are selective. In addition, different types of tab connection substrates can be made according to the center distance of the tab substrate positioning posts 10 of multiple assembled brackets, with multiple selectivities.

[0071] The tab substrate positioning post 10 is used to install and fix the tab connection substrate, and the tab connection substrate is an additional accessory.

[0072] For those of ordinary skill in the art, according to the teachings of the present utility model, without departing from the principles and spirit of the present utility model, changes, modifications, substitutions, and variations made to the embodiments still fall within the protection scope of the present utility model.

Claims

1. A lithium battery fixing bracket, comprising a support frame (1), a support plate (2) symmetrically fixedly connected to the top of the support frame (1) near the edges at both ends in the width direction thereof, and the support plate (2) extends along the length direction of the support frame (1), two positioning beams (3) are symmetrically arranged on the top of the support frame (1) along the length direction thereof, and the two ends of each positioning beam (3) are respectively fixedly connected to the inner walls of the two support plates (2), side wiring grooves (4) are provided at both ends of the support plates (2), and a tab connection platform (5) is fixedly connected at both ends between the two support plates (2), and a tab connection assembly is arranged on the tab connection platform (5); The tab connection assembly comprises two tab connection substrate nut countersunk holes (6) symmetrically arranged at the middle position of the tab connection platform (5); nut seats (7) are arranged on the side walls of the two tab connection platforms (5) close to each other and at positions corresponding to the tab connection substrate nut countersunk holes (6); the bottom of the nut seat (7) is integrally connected to the top of the support frame (1); the nut seat (7) is provided with a tab connection substrate screw through hole (8); the tab connection substrate nut countersunk holes (6) are concentrically connected to the tab connection substrate screw through hole (8); and the tab connection platform (5) is symmetrically provided with two L-shaped wire buckles (9) located outside the two tab substrate positioning columns (10).

2. A lithium battery fixing bracket according to claim 1, characterized in that The tab substrate positioning columns (10) are symmetrically arranged on the side walls of the two tab connection platforms (5) facing away from each other, and the tab substrate positioning columns (10) are located between the corresponding tab connection substrate nut countersunk holes (6) and the cable buckle (9).

3. A lithium battery fixing bracket according to claim 2, characterized in that The tab substrate positioning column (10) is in a step shape, and the diameter of the tab substrate positioning column (10) decreases in a direction away from the tab connection platform (5).

4. A lithium battery fixing bracket according to claim 1, characterized in that The cable buckle (9) and the tab connection platform (5) are integrally injection molded.

5. A lithium battery fixing bracket according to claim 1, characterized in that : Frame longitudinal positioning columns (11) are arranged at the four corners of the support frame (1), frame longitudinal positioning holes (12) are arranged at the four corners of the support plate (2) away from the top of the support frame (1), and the frame longitudinal positioning columns (11) are matched with the frame longitudinal positioning holes (12).

6. A lithium battery fixing bracket according to claim 5, characterized in that The frame longitudinal positioning column (11) is in a step-like shape, and the diameter of the frame longitudinal positioning column (11) decreases in a direction away from the support frame (1).

7. A lithium battery fixing bracket according to claim 1, characterized in that Screw holes (15) are provided at the four corners of the top of the support frame (1) and between the two support plates (2). The screw holes (15) are used for screws for fixing the battery module to pass through.

8. The lithium battery fixing bracket according to claim 1, characterized in that A tab groove (13) is provided near the middle of the top of the tab connection platform (5). After the two lithium battery fixing brackets are arranged side by side, the tab passes through the tab groove (13).

9. A lithium battery fixing bracket according to claim 1, characterized in that A heat dissipation groove (14) is provided near the middle of the top of the support plate (2). When the two lithium battery fixing brackets are arranged side by side, the heat of the batteries is discharged from the heat dissipation groove (14).

10. A lithium battery fixing bracket according to claim 1, characterized in that The lug-connected substrate nut countersunk hole (6) is a hexagonal hole; the lug-connected substrate screw through hole (8) is a circular hole, and the diameter of the lug-connected substrate screw through hole (8) is smaller than the diameter of the inscribed circle of the lug-connected substrate nut countersunk hole (6).

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