Novel battery pack

Abstract

The utility model discloses a novel battery pack which comprises a hollow box body with openings in the top and the right side, a box cover is arranged at the top of the box body; a box body front mounting plate is arranged at the right end of the box body; a battery module main body is arranged in the box body; the battery module main body comprises a plurality of battery modules which are horizontally distributed; module silica gel heat conduction pads, module heating films, heat conduction aluminum plates and first buffer foam which are vertically distributed are sequentially arranged on the front side and the rear side of the battery module main body from near to far; the two module silica gel heat conduction pads are respectively adhered to the front side and the rear side of the battery module main body; the first buffer foam is in contact with the inner side of the front panel of the adjacent box body or the inner side of the rear panel of the adjacent box body; and module middle foams which are vertically distributed are arranged on opposite sides of any two adjacent battery modules. The novel battery pack disclosed by the utility model has excellent anti-vibration performance, is favorable for prolonging the service life of the battery module, and better meets the requirements of users.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and particularly relates to a new type of battery pack. Background Art

[0002] An AGV (Automated Guided Vehicle) is an intelligent transport vehicle, which is widely used in places such as factories and warehouses for material transportation. With the increasing demand for automated equipment in factories and warehousing facilities, AGVs are widely used as an automatic transportation tool.

[0003] One of the core components of an AGV is the battery pack, which provides power and energy support for the AGV. As the power source of the AGV, the battery pack has attracted much attention due to its high energy density, light weight, and rechargeable characteristics.

[0004] However, the battery packs on existing AGVs have poor anti-vibration performance, which affects the service life of the battery modules and cannot meet the user's usage requirements.

[0005] Therefore, there is an urgent need to develop a technology that can solve the above technical problems. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a new type of battery pack for the technical defects existing in the prior art.

[0007] To this end, the utility model provides a new type of battery pack, which includes a hollow box body with an opening at the top and on the right side;

[0008] A box cover is arranged on the top of the box body;

[0009] A front mounting plate of the box body is arranged at the right end of the box body;

[0010] A battery module main body is arranged inside the box body;

[0011] The battery module main body includes a plurality of horizontally distributed battery modules;

[0012] On the front and back sides of the battery module main body, vertically distributed module silica gel heat conductive pads, module heating films, heat conductive aluminum plates, and first buffer foams are sequentially arranged from near to far;

[0013] Two module silica gel heat conductive pads are respectively bonded to the front and back sides of the battery module main body;

[0014] The first buffer foam is in contact with the inner side of the adjacent front panel of the box body or the inner side of the adjacent rear panel of the box body;

[0015] On the opposite sides of any two adjacent battery modules, vertically distributed module intermediate foams are arranged.

[0016] As can be seen from the technical solution provided by the present utility model above, compared with the prior art, the present utility model provides a new type of battery pack, which has a scientific structural design, excellent shock resistance performance, is beneficial to extending the service life of the battery module, better meets the needs of users, improves the market application prospect of the products of battery pack manufacturers, and has great practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic diagram of the three-dimensional exploded decomposition structure of a new type of battery pack provided by the present utility model;

[0018] Figure 2 FIG. is a schematic diagram of the structure of a battery module in a new type of battery pack provided by the present utility model;

[0019] Figure 3 FIG. is a schematic diagram of an assembly process of a new type of battery pack provided by the present utility model;

[0020] Figure 4 FIG. is a schematic diagram of the three-dimensional structure of a new type of battery pack after completion of assembly provided by the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Hereinafter, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0022] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model 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 therefore should not be construed as a limitation to the present utility model.

[0023] In the description of this patent, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific situations.

[0024] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically defined.

[0025] See Figures 1 to 4 , the present utility model provides a new type of battery pack, including a hollow box body 2 with an opening at the top and on the right side;

[0026] A box cover 3 is provided on the top of the box body 2;

[0027] A front mounting plate 4 of the box body is provided at the right end of the box body 2;

[0028] A battery module main body is provided inside the box body 2;

[0029] The battery module main body includes a plurality of (for example, two) horizontally distributed battery modules 1;

[0030] On the front and back sides of the battery module main body, vertically distributed module silica gel heat conductive pads 9, module heating films 8, heat conductive aluminum plates 7 and first buffer foams 6 are sequentially arranged from near to far;

[0031] The two module silica gel heat conductive pads 9 are respectively bonded to the front and back sides of the battery module main body;

[0032] The first buffer foam 6 is in contact with the inner side of the front panel of the adjacent box body 2 or the inner side of the rear panel of the adjacent box body 2.

[0033] On the opposite sides of any two adjacent battery modules 1, vertically distributed module intermediate foams 13 are provided;

[0034] It should be noted that the module intermediate foam 13 is pasted between the two battery modules 1 to absorb and reduce the vibration between the battery modules 1 and provide insulation protection.

[0035] Between the bottoms of the plurality of battery modules 1 and the inner side of the bottom panel of the box body 2, horizontally distributed module bottom insulation sheets 12 (polycarbonate PC sheets) are provided;

[0036] It should be noted that by pasting the module bottom insulation sheet 12 (polycarbonate PC sheet) between the box body 2 and the battery module 1, it is beneficial to provide insulation protection for the battery module 1.

[0037] In the present utility model, it should be noted that the module silicone thermal conductive pad 9 is directly attached to the side of the battery module 1 in the battery module main body. By utilizing the good thermal conductivity of the silicone grease, the contact thermal resistance between the surface of the module heating film 8 and the contact surface of the battery module 1 is reduced, making the heat received by the side of the battery module 1 more uniform. By utilizing its physical expansion and contraction properties and insulation properties, it can provide insulation protection and shock absorption between the battery module 1 and the module heating film 8, thus greatly improving the operating temperature range and service life of the battery pack.

[0038] In the present utility model, specifically, one side of the module heating film 8 is bonded to the heat-conducting aluminum plate 7, and the other side is in close contact with the module silicone thermal conductive pad 9.

[0039] It should be noted that in the present utility model, the film group heating film 8 is a PI heating film with an adhesive backing, which is attached to the heat-conducting aluminum plate 7. It has good uniform heating performance, is thin and light in volume, occupies a small space, and has a low cost, which can improve the performance, cost, and energy density of the battery pack.

[0040] It should be noted that in the present utility model, the heat-conducting aluminum plate 7 utilizes the good thermal conductivity of aluminum to increase the interaction between the heat generated by the battery module during operation and the outside of the battery pack, improve the service life of the battery module 1 in the battery pack, and enhance the reliability of the battery pack.

[0041] In the present utility model, specifically, the first buffer foam 6 is bonded to the inner side of the front panel of the adjacent box body 2 or the inner side of the rear panel of the adjacent box body 2;

[0042] The bottom of the first buffer foam 6 is bonded to the heat-conducting aluminum plate 7.

[0043] It should be noted that in the present utility model, the first buffer foam 6 has an adhesive backing and is pasted on the contact surface of the box body 2, which can effectively absorb the vibration generated during the operation of the product and effectively improve the service life of the battery pack.

[0044] In the present utility model, specifically, the shape of the box body 2 is a cuboid shape.

[0045] It should be noted that the box body 2 is a square structure, which has good space utilization and a wide application range, and is the optimal shape design for the battery pack.

[0046] In the present utility model, specifically, on the opposite side of the right end of the front panel and the rear panel of the box body 2, a first bending and flanging 201 is provided;

[0047] On the top right side of the bottom panel of the box body 2, a vertically distributed second bending and flanging 202 is provided.

[0048] In specific implementation, the first bending and flanging 201 and the second bending and flanging 202 are located in the same vertical plane.

[0049] It should be noted that there is an L-shaped bending and flanging on the right end face of the box body 2. The lengths of the two flanges do not reach the top, which is convenient for the top cover (i.e., the box cover 3) to be buckled with it. There are several rivet nuts on the inner side of the flange and the upper end of the side. The box body 2 is made of Q235 material (carbon structural steel), which is beneficial to ensure the overall strength of the battery pack.

[0050] In the present utility model, in specific implementation, above each battery module 1, a module fixing bracket 5 is provided;

[0051] The left end of the top of the module fixing bracket 5 is fixedly connected to the top of the left side panel of the box body 2;

[0052] The right end bottom of the module fixing bracket 5 is fixedly connected to the top surface of the bottom panel of the box body 2.

[0053] In specific implementation, the shape of the module fixing bracket 5 is Z-shaped.

[0054] In specific implementation, the module fixing bracket 5 includes a horizontal bracket part 51, a vertical bracket part 52, and a bottom bracket part 53;

[0055] The right end of the horizontal bracket part 51 is perpendicularly connected to the top of the vertical bracket part 52;

[0056] The bottom of the vertical bracket part 52 is perpendicularly connected to the left end of the bottom bracket part 53;

[0057] The top surface of the battery module 1 is in contact with the bottom surface of the horizontal bracket part 51;

[0058] Furthermore, on the bottom bracket part 53, two kidney-shaped holes 530 are symmetrically distributed front and back;

[0059] The bottom bracket part 53 is fixedly connected to the bottom panel of the box body 2 through a first bolt.

[0060] Furthermore, on the bottom panel of the box body 2 at positions corresponding to each kidney-shaped hole 530, a first rivet nut is fixedly provided respectively;

[0061] After the first bolt passes through the kidney-shaped hole 530, it is threadedly and fixedly connected to the corresponding first rivet nut.

[0062] In specific implementation, a wire tie buckle 520 is welded on the vertical bracket part 52;

[0063] In specific implementation, bumps are respectively provided at the left end of the top and the front and back ends of the horizontal bracket part 51;

[0064] A second press riveting nut is provided on the bump.

[0065] On the front side panel, rear side panel and left side panel of the box body 2, box body through holes are provided at positions corresponding to the second press riveting nuts on the bumps.

[0066] The horizontal bracket part 51 is fixedly connected to the box body 2 through a second bolt.

[0067] It should be noted that after the second bolt passes through the box body through hole on the box body 2, it is threadedly fixedly connected to the corresponding second press riveting nut.

[0068] It should be noted that the module fixing bracket 5 is a bent structure with a Z-shaped shape. The upper part of the module fixing bracket 5 is bent in an L shape and there are several press riveting nuts. There are two waist-shaped holes in the lower part of the module fixing bracket 5 to ensure installation allowance. A wire tying buckle 520 is welded on the vertical bracket part 52 in the middle to facilitate subsequent wire routing and fixing. The waist-shaped holes in the lower part of the module fixing bracket 5 are connected to the press riveting nuts on the bottom surface of the box body 2, and the upper part of the module fixing bracket 5 is connected to the side surface of the box body 2, which can effectively ensure that the relative position of the battery module 1 and the box body 2 does not move.

[0069] Specifically, between the right side surface of the battery module 1 and the left side surface of the vertical bracket part 52, a vertically distributed third buffer foam 11 is provided.

[0070] The left and right sides of the third buffer foam 11 are respectively bonded to the battery module 1 and the vertical bracket part 52.

[0071] It should be noted that the third buffer foam 11 is pasted between the module fixing bracket 5 and the battery module 1, which is beneficial to absorbing vibration and reducing collision.

[0072] In the present utility model, specifically, between the left side surface of the battery module 1 and the inner side surface of the left side panel of the box body 2, a vertically distributed second buffer foam 10 is provided.

[0073] The left and right sides of the second buffer foam 10 are respectively bonded to the box body 2 and the battery module 1.

[0074] It should be noted that the second buffer foam 10 has double-sided adhesive and is pasted on the contact surface between the end face of the battery module 1 and the box body 2, which can effectively absorb the vibration generated during the operation of the product and improve the service life of the battery pack.

[0075] In the present utility model, specifically, on the inner side surface of the front mounting plate 4 of the box body, a battery management system 16 and a heating module 15 are provided.

[0076] The battery management system 16 is located in the gap between the front mounting plate 4 of the box body and the module fixing bracket 5.

[0077] Inside the bottom panel of the box body 2, a horizontally distributed second insulating sheet 14 (polycarbonate PC sheet) is provided at a position directly below the battery management system 16.

[0078] The second insulating sheet 14 is pasted on the inner side of the bottom panel of the box body 2.

[0079] It should be noted that the battery management system 16 uses an integrated circuit module with a small volume to monitor and manage the battery system, improve the service life of the battery pack, and is installed on the nut posts on the front mounting plate 4 of the box body. The heating module 5 is fixed on the nut posts of the front mounting plate 4 of the box body.

[0080] It should be noted that the battery management system (BMS) 16 and the heating module 15 are well-known modules that have been widely used and have mature technologies on existing battery packs, and will not be elaborated here. For example, the battery management system (BMS) 16 can use a battery system management device with the model number 22PHA1RCB080A produced by Shiyan Ant IoT Technology Co., Ltd., which is used to ensure battery safety, improve battery performance, extend battery life, and optimize battery use, and realize remote monitoring and management; the battery management system (BMS) 16 can control the heating module 15 to realize the heating control of the side of the battery module.

[0081] It should be noted that the second insulating sheet 14 (polycarbonate PC sheet) has an adhesive backing and is pasted on the bottom position of the box body 2 below the battery management system 16 for insulation protection.

[0082] In the present utility model, specifically, an L-shaped mounting bracket 401 is welded to the upper right part of the front mounting plate 4 of the box body.

[0083] There are two device mounting holes on the mounting bracket 401.

[0084] On the front and back sides of the mounting bracket 401, a U-shaped handle 402 is respectively provided.

[0085] The two handles 402 are symmetrically distributed front and back.

[0086] On the outer side (i.e., the left side) of the left panel of the box body 2, two handles are correspondingly provided at positions corresponding to the two handles 402 on the front mounting plate 4 of the box body.

[0087] The handles on the left panel of the box body 2 and the handles on the front mounting plate 4 of the box body are connected by a magic tape 19 (for example, the two ends of the magic tape 19 are respectively tied to one handle).

[0088] Furthermore, hooks and loops are evenly distributed on the surface of the magic tape 19.

[0089] It should be noted that the magic tape strap 19 has hooks and loops, which is convenient for disassembly while ensuring the lifting strength. It is wrapped around the U-shaped handle on the front mounting plate 4 of the box body for the transfer of the battery pack. After the transfer is completed, it is disassembled and does not occupy the installation space of the battery pack.

[0090] Specifically, a plurality of (for example, four) gland heads 17 and a plurality of (for example, two) communication connectors 18 are installed on the front mounting plate 4 of the box body.

[0091] It should be noted that there are several countersunk holes around the front mounting plate 4 of the box body. An L-shaped mounting bracket is welded on the upper part of the front mounting plate 4 of the box body, and equipment mounting holes (specifically, waist-shaped holes) are opened on the bracket for fixing the battery pack and the equipment used for the battery pack located outside. U-shaped handles are welded on both sides of the L-shaped bracket for installing the magic tape strap 19. Rivet nuts are installed on the back (i.e., the left side) of the front mounting plate 4 of the box body for installing the battery management system 16 and the heating module 15. Through holes with different diameters are opened on the front mounting plate 4 of the box body for installing the gland heads 17 and the communication connectors 18, and the whole is installed on the right side of the box body 2.

[0092] In the present utility model, specifically, for the box cover 3, flanges that are bent downward are provided on its front and rear sides as well as left and right sides;

[0093] It should be noted that there is a gap between the bent part (i.e., the flange) at the mounting plate end of the box cover 3 and other bent parts (such as the first bent flange 201 and the second first bent flange 202 on the box body 2), ensuring that the bent parts of the box cover 3 and the bent parts on both sides of the box body 1 are in a plane after installation. The box cover 3 is installed on the box body 2 through countersunk screws.

[0094] It should be noted that for the present utility model, the end face of the pole column on the battery module is the top surface of the battery module 1.

[0095] In the present utility model, specifically, the battery module 1 includes a plurality of battery cells 20;

[0096] It should be noted that a plurality of battery cells 20 are connected in series and parallel (both parallel combinations and series combinations exist in the middle of the battery module). For example, the battery module 1 includes eight battery cells 20, forming a 1-parallel-8-series battery module.

[0097] Specifically, on the upper and lower ends of the opposite sides of any two adjacent battery cells 20 in the longitudinal direction, cell-to-cell foams 27 distributed horizontally are respectively provided;

[0098] The cell-to-cell foams 27 are bonded to the sides of the adjacent battery cells 20.

[0099] Specifically, first single-sided adhesive epoxy boards 23 are bonded to the left and right ends of the battery module 1 respectively;

[0100] On the front and back sides of the battery module 1, a second single-sided adhesive epoxy board 24 is bonded respectively.

[0101] Specifically, on the top of the battery module 1, a fourth foam board 25 is bonded.

[0102] On the top of the fourth foam board 25, a horizontally distributed third epoxy board 29 is bonded.

[0103] To more clearly understand the technical solution of the present utility model, the following specific embodiments are used to illustrate the technical solution of the present utility model.

[0104] Embodiment

[0105] The first step is to refer to Figure 2 shown in the figure, and assemble the battery pack module 1, which specifically includes the following operations:

[0106] First, stick the double-sided adhesive inter-cell foam 27 up and down on one side of the cell 20, and stick another cell 20 on the inter-cell foam 27 on the previous group of cells 20, and sequentially form a 1-in-8 series battery module. For the battery module, the pole surfaces of multiple cells 20 are kept on the same plane.

[0107] Then, stick the first single-sided adhesive epoxy board 23 and the second single-sided adhesive epoxy board 24 on the left and right end faces and the front and back side faces of the battery module 1 respectively.

[0108] Then, use two fiberglass tapes to respectively surround and bind the upper and lower sides of the peripheral side walls of the battery module and stick them firmly to ensure the reliability of the module 1.

[0109] Then, use laser welding to connect each sampling wire with the first bus bar 21, the second bus bar 22 and the third bus bar 26. After that, place the first bus bar 21, the second bus bar 22 and the third bus bar 26 above the pole of each cell 20 through the viewing holes (i.e., vertical through holes) above them. After the placement is completed, make them connected in sequence through laser welding to form a 1-in-8 series battery module.

[0110] Finally, stick the single-sided adhesive fourth foam board 25 on the top of the battery module 1, then stick the third epoxy board 29 on the top of the fourth foam board 25, and then use fiberglass tape to surround and bind the whole battery module up and down to complete the assembly of the battery module 1.

[0111] The second step is to refer to Figure 3 shown in the figure, and perform the installation operation of the battery module on the box body 2, which specifically includes the following operations:

[0112] First, paste the first buffer foam 6 with adhesive on the inner walls of the front and back sides of the box body 2, paste the second buffer foam 10 on the inner wall of the left end of the box body 2, and add the third buffer foam 11 arranged on the right side of the battery module. Therefore, the battery cells in the battery module 1 are protected by the foams around, which can effectively absorb the vibrations generated during the operation of the electrical equipment, and improve the service life of the battery pack.

[0113] Then, paste the module silicone thermal conductive pad 9 on the side of the battery module 1 in sequence, paste the module heating film 8 on the module silicone thermal conductive pad 9, and paste the thermal conductive aluminum plate 7 on the module heating film 8. This multi-level direct interaction thermal management structure not only has a low cost but also a small space occupancy rate, greatly improving the energy density of the battery pack, being beneficial to improving the service life of the battery pack, and expanding the application environment scope of the battery pack.

[0114] Then, paste the module bottom insulating sheet 12 (polycarbonate PC sheet) on the bottom of the box body 2.

[0115] Next, place the two complete battery modules 1 face to face on the box body 2, squeeze the module middle foam 13 in the middle, and then paste the third buffer foam 11 between the battery module 1 and the module fixing bracket 5 to prevent direct contact and collision damage between the two. The upper part of the module fixing bracket 5 is connected to the box body 2 by bolts, and the lower part is connected to the rivet nut at the bottom of the box body 2.

[0116] Then, connect the two battery modules 1 in series by using the module busbar 28, and finally complete the installation between the battery module 1 and the box body 2. This kind of sheet metal integrated bracket fixing method has a low cost and is firm and reliable.

[0117] The third step is as Figure 3 shown. After completing the fixation of the battery module and the box body, fix the heating module 15 and the battery management system 16 on the rivet nut posts on the left side of the front mounting plate 4 of the corresponding box body respectively. Then, install the gland 17 and the communication connector 18 in the corresponding through holes of the front mounting plate 4 of the box body. After the installation, connect the sampling wire, the temperature sensor wire and the power harness to the busbar, the heating module 15 and the battery management system 16 on the corresponding battery module 1.

[0118] The fourth step, refer to Figure 4 shown. Install the box cover 3 on the box body 2 through countersunk head screws, lead out the power line from the gland 17, and fix and install the front mounting plate 4 of the box body on the right end face of the box body 2 through countersunk head screws. Finally, wind the magic tape 19 around the U-shaped handles on the left and right sides of the box body 2 and connect them to facilitate the transfer of the battery pack.

[0119] In summary, the novel battery pack provided by the present utility model, as a novel AGV battery pack, uses a multi-level direct interaction thermal management structure to heat the battery modules 1 in the battery pack and interact with external heat. On the basis of low cost, it significantly broadens the application scope of the battery pack and increases the battery life. The module fixing method of the integrated bracket structure adopted by the present utility model significantly saves the production cost of the battery pack, increases the reliability and energy density of the battery pack, and overall meets the customer's consideration of cost and performance in terms of design.

[0120] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A new type of battery pack, characterized in that: A hollow box body (2) having openings on the top and right side; A box cover (3) is arranged on the top of the box body (2); A box front mounting plate (4) is provided at the right end of the box (2); A battery module body is arranged in the box body (2); The battery module body comprises a plurality of horizontally distributed battery modules (1); The front and rear sides of the battery module body are provided with vertically distributed module silicone thermal pads (9), module heating films (8), thermal conductive aluminum plates (7) and first buffer foam (6) in sequence from near to far; Two module silicone thermal pads (9) are respectively bonded to the front and rear sides of the battery module body; The first buffer foam (6) is in contact with the inner side of the front panel of the adjacent box (2) or the inner side of the rear panel of the adjacent box (2); A vertically distributed module middle foam (13) is provided on the opposite side of any two adjacent battery modules (1).

2. The novel battery pack according to claim 1, characterized in that: One side of the module heating film (8) is bonded to the heat-conducting aluminum plate (7), and the other side is in close contact with the module silicone heat-conducting pad (9); The first buffer foam (6) is bonded to the inner side of the front panel of the adjacent box (2) or the inner side of the rear panel of the adjacent box (2); The bottom of the first buffer foam (6) is bonded to the heat-conducting aluminum plate (7).

3. The novel battery pack according to claim 1, characterized in that: A first bent flange (201) is provided on the front panel and the side opposite to the right end of the rear panel of the box body (2); A second bent flange (202) distributed vertically is provided on the top right side of the bottom panel of the box body (2); The first bent flange (201) and the second bent flange (202) are located on the same vertical plane.

4. The novel battery pack as claimed in claim 1, characterized in that: A module fixing bracket (5) is arranged above each battery module (1); The top left end of the module fixing bracket (5) is fixedly connected to the top of the left side panel of the box body (2); The bottom of the right end of the module fixing bracket (5) is fixedly connected to the top surface of the bottom panel of the box body (2).

5. The novel battery pack as claimed in claim 4, characterized in that: The module fixing bracket (5) is in a Z-shape.

6. The novel battery pack as claimed in claim 4, characterized in that: A module fixing bracket (5), comprising a horizontal bracket portion (51), a vertical bracket portion (52) and a bottom bracket portion (53); The right end of the horizontal support part (51) is vertically connected to the top of the vertical support part (52); The bottom of the vertical support portion (52) is vertically connected to the left end of the bottom support portion (53); The top surface of the battery module (1) contacts the bottom surface of the horizontal support portion (51).

7. The novel battery pack as claimed in claim 6, characterized in that: The bottom support portion (53) is provided with two waist-shaped holes (530) symmetrically distributed front and back; The bottom bracket part (53) is fixedly connected to the bottom panel of the box body (2) by means of a first bolt; A first rivet nut is fixedly provided at a position of the bottom panel of the box body (2) corresponding to each waist-shaped hole (530); After the first bolt passes through the waist-shaped hole (530), it is threadedly fixedly connected with the first rivet nut corresponding to the position; and / or, A cable tie (520) is welded on the vertical support portion (52).

8. The novel battery pack as claimed in claim 6, characterized in that: The top left end and the front and rear ends of the horizontal support part (51) are respectively provided with protrusions; A second rivet nut is arranged on the protrusion; The front side panel, the rear side panel and the left side panel of the box body (2) are provided with box body through holes at positions corresponding to the second rivet nuts on the protrusions; The horizontal support portion (51) is fixedly connected to the box body (2) via a second bolt; and / or, A third buffer foam (11) distributed vertically is provided between the right side surface of the battery module (1) and the left side surface of the vertical support portion (52); The left and right sides of the third buffer foam (11) are respectively bonded to the battery module (1) and the vertical support portion (52); and / or, A second buffer foam (10) distributed vertically is provided between the left side surface of the battery module (1) and the inner side surface of the left side panel of the box body (2); The left and right sides of the second buffer foam (10) are respectively bonded to the box body (2) and the battery module (1).

9. The novel battery pack according to any one of claims 1 to 8, characterized in that: A battery management system (16) and a heating module (15) are arranged on the inner side surface of the front mounting plate (4) of the box body; A battery management system (16) is located in the gap between the front mounting plate (4) of the box and the module fixing bracket (5); A second insulating sheet (14) is arranged horizontally on the inner side of the bottom panel of the box body (2) at a position directly below the battery management system (16); The second insulating sheet (14) is adhered to the inner side of the bottom panel of the box body (2); and / or, An L-shaped mounting bracket (401) is welded to the upper right side of the box body front mounting plate (4); The mounting bracket (401) has two equipment mounting holes; A handle (402) in the shape of a Chinese character "J" is respectively provided on the front and rear sides of the mounting bracket (401); The two handles (402) are symmetrically distributed front and back; Two handles are provided on the outer side of the left side panel of the box body (2) at positions corresponding to the two handles (402) on the front mounting plate (4) of the box body; The handle on the left side panel of the box body (2) is connected to the handle on the front mounting plate (4) of the box body through a Velcro strap (19).

10. The novel battery pack according to any one of claims 1 to 8, characterized in that: A battery module (1) comprising a plurality of battery cells (20); The upper and lower ends of the opposite sides of any two adjacent battery cells (20) in the longitudinal direction are respectively provided with transversely distributed inter-battery cell foam (27); The foam (27) between the battery cells is bonded to the side surfaces of the adjacent battery cells (20); The left and right ends of the battery module (1) are respectively bonded with a first single-sided adhesive epoxy board (23); A second single-sided adhesive epoxy board (24) is bonded to the front and rear sides of the battery module (1) respectively; A fourth foam plate (25) is bonded to the top of the battery module (1); A third epoxy plate (29) is bonded to the top of the fourth foam plate (25) and is horizontally distributed.

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