Battery cell module box, battery cell module fixing structure and battery cell module

Abstract

The utility model discloses a battery cell module box, a battery cell module fixing structure and a battery cell module, and relates to the technical field of new energy automobile batteries, the battery cell module box comprises a first module box, a second module box, mounting brackets, a first connecting piece and a wire harness fixing mechanism, the mounting brackets are respectively arranged on the first module box and the second module box; the two opposite mounting brackets are connected with each other through a first connecting piece, and the side walls of the first module box and the second module box are respectively provided with a wire harness fixing mechanism; the side wall of the first module box and the side wall of the second module box are each provided with a notch, and a second long bolt hole is formed in each notch. The concave surface of the sinking table of the end plate can enter the notch, so that the third connecting piece can select a long bolt with shorter length, the gap between the head end and the tail end of the third connecting piece and the box body can meet the requirement, and the volume utilization rate of the box body is improved; and through the arrangement of the wire harness fixing mechanism, the temperature sensing wire can be rapidly installed and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle batteries, in particular to a cell module box, a cell module fixing structure and a cell module. Background Art

[0002] The power battery is the power source of a new energy vehicle. Many vehicle models on the market are converted from gasoline vehicles to electric vehicles, and such vehicle models have irregular PACK external shapes. In some battery packs with special envelopes, cylindrical cells are often selected to improve the energy density. Generally, cylindrical cells are first fixed by upper and lower module boxes to form a single small module, and then multiple small modules are connected in series to form a large module. Therefore, the design of the module box is the key to the design of the cylindrical battery pack.

[0003] When several cell modules form a large module, it is necessary to consider how to connect them into a whole from the aspects of structural strength and mechanics. The common method to solve this problem in the prior art is to open long bolt holes on the module box, and lock these cell modules on the module installation bracket (left and right end plates) through several long bolts to form a whole. However, in a power battery pack, there are requirements for the gap between the module and the box body. Generally, the head and tail of the long bolt of the cylindrical module are the two points closest to the box body. When the envelope space is tight, how to design the module installation bracket and the module box to improve the space utilization rate so that the gaps at both ends of the long bolt passing through meet the requirements is a technical problem to be solved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a cell module box, a cell module fixing structure and a cell module to solve the above technical problems.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The cell module box includes a first module box, a second module box, an installation bracket, a first connecting piece and a wire harness fixing mechanism. The first module box and the second module box are arranged opposite to each other. The installation brackets are respectively arranged on the first module box and the second module box. The two opposite installation brackets are connected to each other through the first connecting piece. The wire harness fixing mechanisms are respectively arranged on the side walls of the first module box and the second module box;

[0007] Grooves are respectively opened on the side walls of the first module box and the second module box. One end of the installation bracket is installed in the groove, and the first connecting piece penetrates through the groove and the installation bracket;

[0008] Notches are also respectively opened on the side walls of the first module box and the second module box. Second long bolt holes are respectively opened in each notch.

[0009] Preferably, it further includes embedded parts and a second connecting member. The embedded parts are arranged on the inner wall of the groove, and the second connecting member passes through one end of the mounting bracket and is connected to the embedded parts.

[0010] As a further preference, first long bolt holes are respectively formed on the inner walls of each groove, and the first connecting member penetrates through the first long bolt holes.

[0011] As a further preference, both ends of the mounting bracket are bent to form a first connecting portion and a second connecting portion. The first connecting portion is arranged in the groove. First mounting holes that are aligned with the first long bolt holes are formed on both the first connecting portion and the second connecting portion. A second mounting hole for mounting the second connecting member is further formed on the first connecting portion.

[0012] Preferably, the first module box and the second module box are connected by self - tapping screws.

[0013] Preferably, the wire harness fixing mechanism includes a plurality of buckle mechanisms. Each buckle mechanism includes ribs and a tongue. The two ribs are arranged in parallel, and the tongue is arranged on one of the ribs. Card slots are respectively formed on the first module box and the second module box at positions opposite to the tongue.

[0014] A fixing structure for a battery cell module includes the battery cell module box as described above, and further includes end plates and a third connecting member. Two end plates are arranged at both ends of a plurality of the battery cell module boxes. The third connecting member penetrates through the end plates and the second long bolt holes to connect the two end plates and the plurality of battery cell module boxes together.

[0015] As a further preference, a plurality of counterbore concave surfaces are respectively formed on the side walls of each end plate. Each counterbore concave surface is respectively located in a notch. A third mounting hole is formed in each counterbore concave surface.

[0016] As a further preference, a plurality of fourth mounting holes are respectively formed on the side walls of each end plate. Some of the fourth mounting holes are aligned with the first long bolt holes;

[0017] A plurality of weight - reducing holes are further formed on the end plates.

[0018] A battery cell module includes the battery cell module box as described above, and further includes battery cells. A plurality of the battery cells are arranged between the first module box and the second module box.

[0019] A battery cell module includes the fixing structure for a battery cell module as described above, and further includes battery cells. A plurality of the battery cells are respectively arranged in each battery cell module box.

[0020] The above technical solution has the following advantages or beneficial effects:

[0021] In the present utility model, through the settings of the first module box, the second module box, and the mounting bracket, and by providing grooves and notches on the first module box and the second module box, the end of the mounting bracket is located within the groove and does not protrude from the groove, while the counterbore concave surface of the end plate can enter the notch, enabling the third connecting member to select a longer bolt with a shorter length. The distance between the two ends of the head and the tail of the third connecting member from the box body gap can meet the requirements, improving the volume utilization rate of the box body; through the setting of the wire harness fixing mechanism, the temperature sensing wire can be quickly installed and fixed. Description of the Drawings

[0022] Figure 1 is the front structural schematic diagram of the battery cell module box in the present utility model;

[0023] Figure 2 is the exploded schematic diagram of the battery cell module box in the present utility model;

[0024] Figure 3 is the structural schematic diagram of the mounting bracket in the present utility model;

[0025] Figure 4 is the partial enlarged view of the groove in the present utility model;

[0026] Figure 5 is the exploded schematic diagram of the battery cell module in the present utility model;

[0027] Figure 6 is the exploded schematic diagram of the battery cell module fixing structure in the present utility model;

[0028] Figure 7 is the structural schematic diagram of the end plate in the present utility model;

[0029] Figure 8 is Figure 1 the enlarged view of part A in

[0030] Figure 9 is the front schematic diagram of the buckle mechanism in the present utility model;

[0031] Figure 10 is the side schematic diagram of the buckle mechanism in the present utility model;

[0032] Figure 11 is the distribution schematic diagram of several buckle mechanisms in the present utility model.

[0033] In the figure: 1. First module box; 2. Second module box; 3. Mounting bracket; 4. First connecting piece; 5. Buckling mechanism; 6. Groove; 7. Notch; 8. First long bolt hole; 9. Second long bolt hole; 10. Embedded part; 11. Second connecting piece; 12. First connecting part; 13. Second connecting part; 14. First mounting hole; 15. Second mounting hole; 16. Self-tapping screw; 17. Rib; 18. Latching tongue; 19. End plate; 20. Third connecting piece; 21. Cell module box; 22. Counterbore concave surface; 23. Third mounting hole; 24. Fourth mounting hole; 25. Weight reduction hole. Detailed implementation mode

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] In the description of the present invention, it should be noted that, as terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or positional relationship indicated thereby is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, as terms such as "first", "second", "third" appear, they are only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, as terms such as "installation", "connection", "connection" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Figure 1 is the front structure schematic diagram of the cell module box in the present invention; Figure 2 is the exploded schematic diagram of the cell module box in the present invention; Figure 3 is the structure schematic diagram of the mounting bracket in the present invention;

[0038] Figure 4 is the partial enlarged view of the groove in the present invention; Figure 5It is an explosion schematic diagram of the battery cell module in the present utility model; Figure 6 It is an explosion schematic diagram of the fixing structure of the battery cell module in the present utility model; Figure 7 It is a schematic diagram of the structure of the end plate in the present utility model; Figure 8 It is Figure 1 an enlarged view of part A in Figure 9 It is a front schematic diagram of the buckle mechanism in the present utility model; Figure 10 It is a side schematic diagram of the buckle mechanism in the present utility model; Figure 11 It is a distribution schematic diagram of several buckle mechanisms in the present utility model. Please refer to Figures 1 to 11 As shown in Figure 2 a preferred embodiment is shown, showing a battery cell module box 21, including a first module box 1, a second module box 2, a mounting bracket 3, a first connecting member 4 and a wire harness fixing mechanism. The first module box 1 and the second module box 2 are arranged opposite to each other. Mounting brackets 3 are respectively arranged on the first module box 1 and the second module box 2. The two opposite mounting brackets 3 are connected to each other through the first connecting member 4. Wire harness fixing mechanisms are respectively arranged on the side walls of the first module box 1 and the second module box 2. In this embodiment, a plurality of positioning holes are respectively formed in the inner walls of the first module box 1 and the second module box 2 close to each other for installing battery cells. Specifically, refer to

[0039] In the first module box 1 and the second module box 2, lead holes are respectively formed, facilitating the lead-out of the temperature sensing wire from the lead holes and then fixing it through the wire harness fixing mechanism, facilitating the quick installation or disassembly of the temperature sensing wire.

[0040] Grooves 6 are respectively formed in the side walls of the first module box 1 and the second module box 2. One end of the mounting bracket 3 is installed in the groove 6, and the first connecting member 4 penetrates through the groove 6 and the mounting bracket 3. Refer to Figure 4As shown in the figure, a groove 6 is provided at the outer edge of the surface of the first module box 1 and the second module box 2 that are away from each other. Specifically, two grooves 6 are respectively provided on the first module box 1 and the second module box 2. A first long bolt hole 8 is respectively provided on the inner wall of each groove 6. The first connecting member 4 passes through the first long bolt hole 8. Among them, the first connecting member 4 is a first long bolt, and the first long bolt passes through the mounting bracket 3 and the first long bolt, connecting the mounting brackets 3 on the first module box 1 and the second module box 2 together, realizing the preliminary connection between the first module box 1 and the second module box 2.

[0041] Furthermore, as a preferred embodiment, it further includes an embedded part 10 and a second connecting member 11. The embedded part 10 is provided on the inner wall of the groove 6, and the second connecting member 11 passes through one end of the mounting bracket 3 and is connected to the embedded part 10. Among them, the embedded part 10 is a nut, and the second connecting member 11 is a bolt. Through the arrangement of the second connecting member 11 and the embedded part 10, the mounting bracket 3 can be installed in the groove 6. And both ends of the mounting bracket 3 are bent to form a first connecting portion 12 and a second connecting portion 13. The first connecting portion 12 is arranged in the groove 6. First mounting holes 14 that are aligned with the first long bolt holes 8 are respectively provided on the first connecting portion 12 and the second connecting portion 13. A second mounting hole 15 for installing the second connecting member 11 is also provided on the first connecting portion 12. And both the first mounting hole 14 and the second mounting hole 15 are bolt holes. Combining Figure 3 and Figure 4 As shown, the first connecting portion 12 can be installed in the groove 6 and will not protrude from the groove 6.

[0042] Furthermore, as a preferred embodiment, notch openings 7 are also respectively provided on the side walls of the first module box 1 and the second module box 2. Second long bolt holes 9 are respectively provided in each notch opening 7.

[0043] Furthermore, as a preferred embodiment, the first module box 1 and the second module box 2 are connected by self - tapping screws 16. The raised portions at the upper and lower ends of the second module box 2 and the upper and lower ends of the first module box 1 are connected and fixed by self - tapping screws 16.

[0044] Furthermore, as a preferred embodiment, the wire harness fixing mechanism includes a plurality of buckle mechanisms 5. Each buckle mechanism 5 includes ribs 17 and a tongue 18. The two ribs 17 are arranged in parallel. A tongue 18 is provided on one of the ribs 17. Slots are respectively formed at the positions on the first module box 1 and the second module box 2 opposite to the tongue 18. Wherein, one end of the tongue 18 is connected to one rib 17, and there is a gap between the other end of the tongue 18 and the other rib 17, which facilitates the temperature-sensitive wire to enter the bottom of the tongue 18 through this gap, so that the tongue 18 can clamp the temperature-sensitive wire, realizing the quick installation of the temperature-sensitive wire. The rib 17 can be integrally connected to the first module box 1 or the second module box 2 or connected by adhesive bonding, welding, etc.

[0045] The above are only the preferred embodiments of the present invention, and do not limit the protection scope and implementation manner of the present invention accordingly.

[0046] On the basis of the above embodiments, the present invention also discloses a fixing structure for a battery cell module, which includes a plurality of battery cell module boxes 21, and also includes end plates 19 and a third connecting member 20. Both ends of the plurality of battery cell module boxes 21 are provided with two end plates 19. The third connecting member 20 passes through the end plates 19 and the second long bolt holes 9 to connect the two end plates 19 and the plurality of battery cell module boxes 21 together. Refer to Figure 6 As shown, a plurality of battery cell module boxes 21 are arranged side by side and are connected together by the end plates 19, the third connecting member 20 and the first connecting member 4. The third connecting member 20 is a long bolt.

[0047] Furthermore, as a preferred embodiment, a plurality of counterbore concave surfaces 22 are respectively formed on the side walls of each end plate 19. Each counterbore concave surface 22 is respectively located in a notch 7. Each counterbore concave surface 22 is provided with a third installation hole 23. Wherein, the counterbore concave surface 22 is located in the notch 7 and does not protrude out of the notch 7. The third installation hole 23 is a bolt hole for installing the third connecting member 20. The third connecting member 20 passes through the third installation hole 23 and the second long bolt hole 9, and the end parts at both ends of the third connecting member 20 can sink into the notch 7 and do not protrude out of the notch 7. A shorter long bolt can be selected, and the distance between the head and the tail of the long bolt from the gap of the box body can meet the requirements, improving the volume utilization rate of the box body. The first connecting member 4 can pass through the fourth installation hole 24, the first long bolt hole 8 and the first installation hole 14 to realize the connection and fixation among the end plate 19, the first module box 1, the mounting bracket 3 and the second module box 2.

[0048] Furthermore, as a preferred embodiment, a plurality of fourth installation holes 24 are respectively formed on the side walls of each end plate 19. Some of the fourth installation holes 24 are directly opposite to the first long bolt holes 8; the fourth installation holes 24 are bolt holes. Refer to Figure 7The fourth mounting holes 24 shown are provided with three, two of which are located at the included angle positions of the end plate 19, and the other is located in the middle of the end plate 19, which is also used for mounting long bolts.

[0049] A number of weight-reducing holes 25 are also formed in the end plate 19. By providing the weight-reducing holes 25, the weight of the end plate 19 can be reduced.

[0050] During use, first install the battery cell between the first module box 1 and the second module box 2, then connect and fix the first module box 1 and the second module box 2 with self-tapping screws 16, then fix the first connecting portion 12 at one end of the mounting bracket 3 in the groove 6 through the second connecting member 11, then install the end plate 19, pass the first connecting member 4 through the fourth mounting hole 24, the first long bolt hole 8 and the first mounting hole 14, and connect the two end plates 19 and a number of battery cell module boxes 21 together, then install the third connecting member 20, pass the third connecting member 20 through the third mounting hole 23 and the second long bolt hole 9, so that the end portions at both ends of the third connecting member 20 can sink into the notch 7, and the assembly of the battery cell module can be realized.

[0051] In one embodiment, referring to Figure 5 shown, a battery cell module is also disclosed, which includes a battery cell module box 21 and also includes battery cells. A number of battery cells are arranged between the first module box 1 and the second module box 2. Among them, positioning holes for installing battery cells are provided on both the first module box 1 and the second module box 1. The two ends of the battery cell are inserted into the positioning holes, and then the first module box 1 and the second module box 2 are connected and fixed to form a complete battery cell module. The battery cell module in this embodiment is assembled by a single battery cell module box 21 and a number of battery cells.

[0052] In another embodiment, a battery cell module is also disclosed, which includes a battery cell module fixing structure, also includes a number of battery cell module boxes 21, and also includes battery cells. A number of battery cells are respectively arranged in each battery cell module box 21, and the battery cells are arranged between the first module box 1 and the second module box 2 in the battery cell module box 21. The battery cell module in this embodiment is assembled by a number of battery cell module boxes 21 and a number of battery cells, and specific reference can be made to Figure 6 shown.

[0053] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. The battery cell module box is characterized in that, It includes a first module box, a second module box, a mounting bracket, a first connecting piece, and a wire harness fixing mechanism. The first module box and the second module box are arranged opposite to each other. The mounting brackets are respectively arranged on the first module box and the second module box. The two opposite mounting brackets are connected to each other through the first connecting piece. The wire harness fixing mechanisms are respectively arranged on the side walls of the first module box and the second module box; Grooves are respectively formed on the side walls of the first module box and the second module box. One end of the mounting bracket is installed in the groove, and the first connecting piece penetrates through the groove and the mounting bracket; Notches are also respectively formed on the side walls of the first module box and the second module box. Second long bolt holes are respectively formed in each notch.

2. The battery cell module box according to claim 1, wherein It further includes an embedded part and a second connecting piece. The embedded part is arranged on the inner wall of the groove, and the second connecting piece passes through one end of the mounting bracket and is connected to the embedded part; First long bolt holes are respectively formed on the inner walls of each groove, and the first connecting piece penetrates through the first long bolt holes.

3. The cell module box according to claim 2, wherein Both ends of the mounting bracket are bent to form a first connecting part and a second connecting part. The first connecting part is arranged in the groove. First mounting holes opposite to the first long bolt holes are formed on both the first connecting part and the second connecting part. A second mounting hole for installing the second connecting piece is also formed on the first connecting part.

4. The cell module box according to claim 1, characterized in that, The first module box and the second module box are connected by self-tapping screws.

5. The cell module box according to claim 1, characterized in that The wire harness fixing mechanism includes a plurality of buckle mechanisms. Each buckle mechanism includes a rib and a tongue. The two ribs are arranged in parallel, and the tongue is arranged on one of the ribs. Card slots are respectively formed on the first module box and the second module box at positions opposite to the tongue.

6. The fixed structure of the battery cell module is characterized in that, It includes a plurality of cell module boxes according to any one of claims 1-5, and also includes end plates and a third connecting piece. Two end plates are arranged at both ends of the plurality of cell module boxes. The third connecting piece penetrates through the end plates and the second long bolt holes to connect the two end plates and the plurality of cell module boxes together.

7. The fixed structure of the battery cell module according to claim 6, wherein, A plurality of counterbore concave surfaces are respectively formed on the side walls of each end plate. Each counterbore concave surface is respectively located in one notch, and a third mounting hole is formed in each counterbore concave surface.

8. The fixed structure of the battery cell module according to claim 7, wherein, A plurality of fourth mounting holes are respectively formed on the side walls of each end plate. Some of the fourth mounting holes are opposite to the first long bolt holes; A plurality of weight-reducing holes are also formed on the end plate.

9. The battery cell module is characterized in that, It includes a cell module box according to any one of claims 1-5, and also includes cells. A plurality of cells are arranged between the first module box and the second module box.

10. The battery cell module is characterized in that, It includes a cell module fixing structure according to claim 8, and also includes cells. A plurality of cells are respectively arranged in each cell module box.

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