Integrated structure of battery box body and heating film

Abstract

The utility model discloses an integrated structure of a battery box body and a heating film, and relates to the technical field of batteries. Comprising a battery box body, a first cross beam is arranged in the battery box body, one side of the first cross beam is a wiring area, the other side of the first cross beam is an accommodating area, the accommodating area is used for installing a plurality of battery modules and a plurality of heating films, connecting wires of the plurality of heating films are connected in series and / or in parallel in the wiring area, and a first channel is further formed in the bottom of the first cross beam; openings are formed in the positions, on the two sides of the first cross beam, of the first channel, and connecting lines of the multiple heating films extend into the wiring area through the first channel. According to the integrated structure of the battery box body and the heating films disclosed by the utility model, when the plurality of heating films are arranged in the battery box body, the connecting wires of the plurality of heating films are wired from the inner part of the cross beam and are connected in series and / or in parallel in the wiring area, so that the transverse mounting space of the battery module is prevented from being occupied when the connecting wires are wired.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an integrated structure of a battery box and a heating film. Background Art

[0002] When the battery pack is exposed to low temperatures, heating films are often used to heat the cells, thus preventing the risk of short circuits. Heating films can be installed on both sides of the module, on the bottom of the module, and between the cells. Depending on the module layout, multiple heating films are typically arranged in a single row or multiple rows. When multiple rows are arranged, the heating films should be connected in parallel within a single row and in series between multiple rows.

[0003] At present, in conventional batteries, when the heating film harness is connected in series or parallel, the harness usually runs parallel to the reinforcing beam and is fixed to the side wall of the structural beam with a cable tie. However, in CTP batteries, if this wiring method is still used, the harness will protrude from the side wall of the structural beam, occupying the horizontal space inside the box, resulting in a spatial conflict between the battery module and the cable tie during installation, affecting the battery assembly; in addition, relative to one end of the battery outlet, the rear heating film also requires a certain longitudinal space to complete the harness outlet, which also has certain requirements for the longitudinal space inside the box. Utility Model Content

[0004] The utility model provides an integrated structure of a battery box and a heating film. When multiple heating films are arranged in the battery box, the connecting wires of the multiple heating films are routed from the inside of the crossbeam and are connected in series and / or in parallel with each other in the wiring area to prevent the connecting wires from encroaching on the horizontal installation space of the CTP battery when they are routed, thereby solving the above-mentioned technical problems.

[0005] The technical solution of the present invention to solve the above problems is: to provide an integrated structure of a battery box and a heating film, including a battery box, a first crossbeam is provided in the battery box, one side of the first crossbeam is a wiring area, and the other side is a accommodating area, the accommodating area is used to install multiple battery modules and multiple heating films, the connecting wires of the multiple heating films are connected in series and / or in parallel in the wiring area, and a first channel is also opened at the bottom of the first crossbeam, the first channel forms openings on both sides of the first crossbeam, and the connecting wires of the multiple heating films pass through the first channel to extend into the wiring area.

[0006] Furthermore, at least one second crossbeam is provided in the accommodating area, and the at least one second crossbeam is used to divide the accommodating area into a plurality of accommodating partitions, and the accommodating partitions are used to install the battery module and the heating film.

[0007] Furthermore, a second channel is provided in the second crossbeam, and the connection lines of the heating film in the accommodating area farther from the wiring area pass through the second channel to be routed inside the second crossbeam.

[0008] Furthermore, the second channel has openings formed on the upper end surface of the second beam and the bottom of the side wall of the second beam. The connecting line of the heating film extends into the second channel from the bottom of the side wall of the second beam and then extends out of the second channel from the upper end surface of the second beam.

[0009] Furthermore, it also includes routing longitudinal beams respectively arranged at both ends of the second crossbeam, and the two routing longitudinal beams both extend into the wiring area. After the connecting line extends from the upper end surface of the second crossbeam, it extends into the wiring area through the routing longitudinal beams.

[0010] Furthermore, the upper end surface of the routing longitudinal beam is lower than the upper end of the side wall of the battery box, and the connecting line of the heating film is routed from the upper end surface of the routing longitudinal beam to extend into the wiring area.

[0011] Furthermore, the upper end surface of the second cross beam and the upper end surface of the wiring longitudinal beam are both provided with a plurality of wire harness structures for further fixing the connecting wires.

[0012] Furthermore, multiple screw holes are provided on the wiring longitudinal beam and the second cross beam. The wiring structure includes a screw end and a cable tie. The cable tie is fixedly connected to the screw end. The screw end is fixed to the wiring longitudinal beam or the second cross beam by adapting to the screw hole structure. The cable tie is used to bundle the connecting wires.

[0013] Furthermore, the first crossbeam, the second crossbeam, and the wiring longitudinal beam are all structural reinforcement beams used to enhance the structural strength of the battery box.

[0014] Furthermore, the connecting end of the connecting line is also provided with a connector, which is used to connect multiple heating films in series and / or in parallel in the wiring area, and to connect multiple heating films in series and / or in parallel at the upper end surface of the second beam.

[0015] Furthermore, the upper end surface of the second cross beam is also lower than the upper end of the box wall of the battery box.

[0016] Furthermore, it also includes at least one dividing longitudinal beam arranged in the accommodating area, the second cross beam is used to divide the accommodating area laterally, and at least one said dividing longitudinal beam is used to divide the accommodating area longitudinally. At least one second cross beam and at least one dividing longitudinal beam cooperate with each other to divide the accommodating area into multiple accommodating partitions.

[0017] Beneficial effects of the utility model:

[0018] The utility model provides an integrated structure of a battery box and a heating film. The connecting wires of the heating film close to the wiring area pass through the first channel to cross the first crossbeam and enter the wiring area. The connecting wires of the heating film away from the wiring area pass through the second channel to extend from the upper end face of the second crossbeam, then extend to both sides of the battery box, and finally run from the upper end face of the second longitudinal beam to enter the wiring area. All connecting wires do not run from the side walls of the crossbeam or longitudinal beam, so as to ensure that the horizontal installation space and the vertical installation space of the CTP battery are sufficient.

[0019] Moreover, since the height of the second cross beam and the second longitudinal beam are both less than the height of the battery box wall, when arranging the connecting wires of the heating film, in addition to being fixed by the wire harness structure, there will be gaps between the connecting wires and the second cross beam, the second longitudinal beam, the top cover of the battery box and other structures of the battery. This ensures that the connecting wires will not have squeeze-type contact or long-term friction with other battery structures during battery assembly or normal use, thereby increasing the service life of the heating film, reducing battery use costs, and improving battery safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention. In these drawings, similar reference numerals are used to represent similar elements. The drawings described below are some embodiments of the present invention, but not all. Those skilled in the art can derive other drawings from these drawings without inventive effort.

[0021] Figure 1 is an overall structural diagram of the integrated structure of this embodiment;

[0022] Figure 2 is a structural diagram of the first crossbeam of this embodiment;

[0023] Figure 3 is a structural diagram of the second crossbeam of this embodiment;

[0024] Figure 4 is a structural diagram of the wire harness structure of this embodiment;

[0025] Figure 5 This is a schematic structural diagram of four heating films connected in series in this embodiment;

[0026] Figure 6 Schematic diagram of the structure of the connector of this embodiment;

[0027] 1-battery box, 11-wiring area, 12-accommodation area, 13-first crossbeam, 131-first channel, 14-second crossbeam, 141-second channel, 15-partitioning longitudinal beam, 16-wiring longitudinal beam;

[0028] 21- heating film, 22- connecting wire;

[0029] 3-wire harness structure, 31-screw terminal, 32-cable tie;

[0030] 4-Connector. DETAILED DESCRIPTION

[0031] In this specification, directional terms such as "up," "down," "left," "right," "front," "back," "front," "back," "upper end," and "bottom" mentioned or potentially mentioned are defined relative to the configurations shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may vary depending on the location and usage of the component. Therefore, these and other directional terms should not be construed as restrictive.

[0032] See also Figures 1 to 4 The integrated structure of a battery box and a heating film in a specific embodiment of the present invention includes a battery box 1. The battery box 1 is in a rectangular shape with an opening on the top. After multiple battery modules and multiple heating films 21 are installed in the battery box 1, the technician can finally close the box cover and fix it on the upper end surface of the battery box 1 from above to complete the battery packaging. Figure 1 A first crossbeam 13 is fixedly installed on the left side of the battery box 1. The first crossbeam 13 divides the internal space of the battery box 1 into a smaller wiring area 11 and a larger accommodating area 12. The heating film 21 and the battery module are both installed in the accommodating area 12. At the same time, please refer to Figure 2 The first crossbeam 13 is a sheet metal structure with a large structural cavity inside. Two openings are respectively provided at the lower ends of the left and right side walls of the first crossbeam 13, and the two openings on the left correspond one to one with the two openings on the right, thereby cooperating with the structural cavity to form two first channels 131 on the first crossbeam 13, so that the connecting lines 22 of the two heating films 21 installed in the accommodating area 12 and closest to the first crossbeam 13 can extend from the two first channels 131 into the wiring area 11.

[0033] It should be noted that, in this embodiment, the “horizontal” of the crossbeam means that the beam body transversely divides the internal space of the battery box 1 , rather than that the beam body is placed transversely in the space.

[0034] See also Figure 1In this embodiment, the battery box 1 of this embodiment is a 2X2 type box, that is: a second crossbeam 14 and a partition longitudinal beam 15 are provided in the middle of the accommodating area 12, the second crossbeam 14 and the partition longitudinal beam 15 are arranged crosswise with each other in the accommodating area 12, and the second crossbeam 14 and the partition longitudinal beam 15 are perpendicular to each other, so as to divide the accommodating area 12 into four accommodating partitions in the form of 2X2, each of which is provided with a heating film 21, and the connecting lines 22 of the two heating films 21 located on the left side of the second crossbeam 14 pass through the first crossbeam 13 from the two first channels 131 to extend into the wiring area 11.

[0035] It should be noted that, in other embodiments, the number of second cross beams 14 can be two or more, and the number of separating longitudinal beams 15 can also be two or more; correspondingly, the battery box 1 can be a box with a structural form such as 1X3, 1X2, 2X3, or 3X3.

[0036] See also Figure 3 and Figure 5 In this embodiment, the second crossbeam 14 is also a sheet metal structure, and there is also a large structural cavity inside the second crossbeam 14. Two openings are respectively provided at the lower end of the left side wall, the lower end of the right side wall, and the upper end face of the second crossbeam 14. The two openings of the left side wall or the right side wall correspond one to one with the two openings of the upper end face, and cooperate with the structural space to form two second channels 141 in the second crossbeam 14. The connecting lines 22 of the two heating films 21 on the right side of the second crossbeam 14 respectively pass through a second channel 141 to extend from the upper end face of the second crossbeam 14, and the two heating films 21 on the right side of the second crossbeam 14 are also connected in series on the upper end face of the second crossbeam 14. In addition, please refer to Figure 1 , the upper and lower sides of the battery box 1 are also equipped with wiring longitudinal beams 16, which are also sheet metal structures. The upper end surface of the wiring longitudinal beam 16 is lower than the box wall of the battery box 1, and the upper end surface of the second cross beam 14 is also lower than the upper end of the box wall of the battery box 1. The connecting line 22 of the heating film 21 on the right side of the second cross beam 14 and above the partition longitudinal beam 15 can extend from the upper end surface of the second cross beam 14 to the upper wiring longitudinal beam 16, and extend along the wiring longitudinal beam 16 to the wiring area 11, so that the two heating films 21 on the upper side of the partition longitudinal beam 15 are connected in series with each other in the wiring area 11; the connecting line 22 of the heating film 21 on the right side of the second cross beam 14 and below the partition longitudinal beam 15 also passes through the lower wiring longitudinal beam 16 to be connected in series with another heating film 21 below the partition longitudinal beam 15.

[0037] In addition, the two openings on the left side wall correspond to the two openings on the right side wall, so that the second crossbeam 14 does not need to be installed in the front or back direction.

[0038] See also Figure 1 、 Figure 3 、 Figure 4 In this embodiment, the upper end surface of the second cross beam 14 and the upper end surface of the wiring longitudinal beam 16 are provided with a plurality of screw holes, and each screw hole is provided with a wire harness structure 3, which includes a screw end 31 and a cable tie 32. The screw end 31 is a stud, and the screw end 31 is threadedly connected to the screw hole. The cable tie 32 is used to bundle the extended connecting wire 22 to prevent the connecting wire 22 from moving.

[0039] See also Figure 6 In this embodiment, the connecting end of the connecting line 22 is also provided with a connecting head, which is used to connect in series the two heating films 21 distributed laterally in the wiring area 11, and to connect in series the two heating films 21 distributed longitudinally on the right side of the second beam 14 at the upper end surface of the second beam 14.

[0040] It should be noted that, in this embodiment, the first crossbeam 13 , the second crossbeam 14 , the wiring longitudinal beam 16 , and the separation longitudinal beam 15 are also used to enhance the structural strength of the battery box 1 , and all four are structural reinforcement beams.

[0041] In addition, although the four heating films 21 in this embodiment are connected only in series, this does not mean that the four heating films 21 in this embodiment can only be connected in series, and the connector is not limited to series connection. In fact, technicians can select the corresponding type of connector according to actual needs to connect the heating films 21 in series or parallel, or in series and parallel. Moreover, the specific number of heating films 21 in this application is not limited to four. In other embodiments, the number of heating films 21 can also be two, three, five, or more.

[0042] Any matters not mentioned above are applicable to the prior art.

[0043] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the above embodiments, or that some of the technical features may be replaced with equivalents; and such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An integrated structure of a battery box and a heating film, characterized in that: The battery box (1) comprises a battery box (1), wherein a first crossbeam (13) is provided in the battery box (1), one side of the first crossbeam (13) is a wiring area (11), and the other side is a receiving area (12), the receiving area (12) is used to install multiple battery modules and multiple heating films (21), the connecting wires (22) of the multiple heating films (21) are connected in series and / or in parallel in the wiring area (11), and a first channel (131) is further provided at the bottom of the first crossbeam (13), the first channel (131) forms openings on both sides of the first crossbeam (13), and the connecting wires (22) of the multiple heating films (21) pass through the first channel (131) to extend into the wiring area (11).

2. The integrated structure of the battery box and the heating film according to claim 1, characterized in that: At least one second crossbeam (14) is provided in the accommodating area (12), and the at least one second crossbeam (14) is used to divide the accommodating area (12) into a plurality of accommodating partitions, and the accommodating partitions are used to install battery modules and heating films (21).

3. The integrated structure of the battery box and the heating film according to claim 2, characterized in that: A second channel (141) is also provided in the second crossbeam (14), and a connecting line (22) of the heating film (21) in the accommodating area farther from the wiring area (11) passes through the second channel (141) to be routed from the inside of the second crossbeam (14).

4. The integrated structure of the battery box and the heating film according to claim 3, characterized in that: The second channel (141) is formed with openings at the upper end surface of the second beam (14) and the bottom of the side wall of the second beam (14); the connecting line (22) of the heating film (21) extends from the bottom of the side wall of the second beam (14) into the second channel (141) and then extends from the upper end surface of the second beam (14) out of the second channel (141).

5. The integrated structure of the battery box and the heating film according to claim 3, characterized in that: It also includes routing longitudinal beams (16) respectively arranged at both ends of the second transverse beam (14), and the two routing longitudinal beams (16) both extend into the wiring area (11). After the connecting line (22) extends from the upper end surface of the second transverse beam (14), it passes through the routing longitudinal beams (16) to extend into the wiring area (11).

6. The integrated structure of the battery box and the heating film according to claim 5, characterized in that: The upper end surface of the wiring longitudinal beam (16) is lower than the upper end of the side wall of the battery box (1), and the connecting line (22) of the heating film (21) is routed from the upper end surface of the wiring longitudinal beam (16) to extend into the wiring area (11).

7. The integrated structure of the battery box and the heating film according to claim 6, characterized in that: The upper end surface of the second crossbeam (14) and the upper end surface of the wiring longitudinal beam (16) are both provided with a plurality of wire harness structures (3) for further fixing the connecting wires (22).

8. The integrated structure of the battery box and the heating film according to claim 7, characterized in that: A plurality of screw holes are provided on the wiring longitudinal beam (16) and the second cross beam (14), and the wiring structure (3) includes a screw connection end (31) and a cable tie (32), the cable tie (32) is fixedly connected to the screw connection end (31), the screw connection end (31) is fixed to the wiring longitudinal beam (16) or the second cross beam (14) by being adapted to the screw hole structure, and the cable tie (32) is used to bundle the connecting wire (22).

9. The integrated structure of the battery box and the heating film according to claim 5, characterized in that: The first crossbeam (13), the second crossbeam (14), and the wiring longitudinal beam (16) are all structural reinforcement beams used to enhance the structural strength of the battery box (1).

10. The integrated structure of the battery box and the heating film according to claim 1, characterized in that: The connection end of the connecting line (22) is also provided with a connector, which is used to connect multiple heating films (21) in series and / or in parallel within the wiring area (11), and to connect multiple heating films (21) in series and / or in parallel at the upper end surface of the second crossbeam (14).

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