Heating and heat preservation logistics vehicle battery structure and assembling method thereof

Abstract

The invention discloses a heating and heat preservation logistics vehicle battery structure and an assembling method thereof, the heating and heat preservation logistics vehicle battery structure comprises a battery cell module, the battery cell module is composed of a plurality of battery cells, the battery cells are electrically connected, and the heating and heat preservation logistics vehicle battery structure is characterized in that the battery cell module is provided with a heating layer, an isolation layer and at least three heat preservation layers; the isolating layer is used for balancing heat in the battery cell module and reducing heat diffusion; the heating layer is used for providing heat for the battery cell module; the heat preservation layer is used for preserving heat of the battery cell module and prolonging the heat preservation time. Through the design of the three heat preservation layers, the heat preservation effect can be greatly improved, the heat preservation time is prolonged, the battery cells can be isolated through the isolation layers arranged in the battery cell modules, heat spreading and heat diffusion between the adjacent battery cells are effectively prevented, and the heat preservation time is prolonged.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and more specifically, to a battery structure for a heated and insulated logistics vehicle and its assembly method. Background Technology

[0002] Existing battery module structures typically only have a heating layer or a single insulation layer. The heating element is in close contact with both the battery cell and the outer casing. While the heating element heats the battery cell module quickly in low-temperature environments, the heat dissipates just as quickly. A single insulation layer is insufficient to maintain a constant temperature for extended periods in low-temperature environments. Furthermore, because the heating element is in direct contact with the battery cell without any insulation protection, it is highly susceptible to short circuits and fires if damaged by external forces or vibrations. Summary of the Invention

[0003] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] To at least partially solve the above problems, the present invention provides a heated and insulated logistics vehicle battery structure, comprising: a cell module, wherein the cell module is composed of a plurality of cells electrically connected to each other, characterized in that the cell module is provided with a heating layer, an insulating layer and at least three insulation layers;

[0005] An insulating layer is used to balance the heat within the battery cell module and reduce heat dissipation.

[0006] The heating layer is used to provide heat to the battery cell module;

[0007] The insulation layer is used to keep the battery cell module warm and extend the insulation time.

[0008] Preferably, the insulation layer consists of three layers: a first insulation layer, a second insulation layer, and a third insulation layer; the first insulation layer is composed of a first support, a second support, a first baffle, and a second baffle.

[0009] The first bracket is connected to the second bracket to form a frame that encloses the battery cell module.

[0010] The first baffle is located on the side of the first bracket away from the second bracket;

[0011] The second baffle is located on the side of the second bracket away from the first bracket;

[0012] The first bracket, the second bracket, the first baffle, and the second baffle form an inner shell that seals the battery cell module;

[0013] The outer wall of the inner shell is provided with a second insulation layer and a third insulation layer in sequence.

[0014] Preferably, the heating layer consists of two heating devices disposed inside the inner shell. The two heating devices are located in the first bracket and the second bracket, respectively. One heating device is connected to the first baffle through EVA foam, and the other heating device is connected to the second baffle through EVA foam. The heating devices are connected to the end of the battery cell module.

[0015] Preferably, the isolation layer is disposed inside the inner shell.

[0016] Preferably, the inner shell is filled with a thermally conductive medium, which forms the insulating layer between the cells of the cell module.

[0017] Preferably, the second insulation layer consists of a heat insulation component with heat insulation function disposed on the outer wall of the inner shell, and a connector for fixing the heat insulation component to the outer wall of the inner shell, and the third insulation layer is wrapped around the outside of the second insulation layer.

[0018] Preferably, it also includes an outer shell, the inner shell being disposed inside the outer shell, and a third insulation layer being disposed on the inner sidewall of the outer shell.

[0019] Preferably, the third insulation layer is a shaped heat insulation medium that is filled between the inner wall of the outer shell and the second insulation layer and has the functions of heat preservation and structural fixation.

[0020] Preferably, the outer shell is composed of a first shell and a second shell, the first shell and the second shell are connected, and the battery cell module, heating layer, insulating layer and three insulation layers are sealed inside the outer shell.

[0021] A method for assembling a battery structure for a heated and insulated logistics vehicle, comprising the following steps:

[0022] S1: Place the battery cell module inside the first bracket and the second bracket, and connect the first bracket and the second bracket;

[0023] S2: Install heating devices on the first bracket and the second bracket, fix one heating device on the first bracket through the first baffle, and fix the other heating device on the second bracket through the second baffle, forming an inner shell with a heating layer and sealing the battery cell module, and the sealed inner shell forms the first heat insulation layer.

[0024] S3: Fill the interior of the inner shell with a heat-conducting medium, which forms an isolation layer inside the inner shell;

[0025] S4: A heat insulation element is provided on the outer surface of the inner shell, and the heat insulation element forms a second heat insulation layer;

[0026] S5: Place the inner shell with the second insulation layer inside the outer shell, and fill the outer shell with a shaped heat insulation medium, which forms the third insulation layer.

[0027] Compared with the prior art, the present invention has at least the following beneficial effects:

[0028] The three-layer insulation design can significantly improve the insulation effect and extend the insulation time. The isolation layer set in the cell module can isolate the individual cells, effectively preventing heat spread and diffusion between adjacent cells and improving the insulation time.

[0029] The heating and insulation logistics vehicle battery structure and its assembly method described in this invention, along with other advantages, objectives, and features of this invention, will be partly apparent from the following description and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0031] Figure 1 This is a schematic diagram of the battery structure of the heated and insulated logistics vehicle according to the present invention.

[0032] Figure 2 This is a schematic diagram of the inner shell.

[0033] Figure 3 for Figure 2 Exploded view.

[0034] Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure.

[0035] Figure 5 This is a schematic diagram of a second embodiment of the second insulation layer.

[0036] Figure 6 This is a schematic diagram of the heat insulation component (before bending).

[0037] Figure 7 This is a schematic diagram of the heat insulation component (after bending).

[0038] Figure 8 This is a structural schematic diagram of the connector.

[0039] Figure 9 This is a top view of the insert and snap-fit ​​components.

[0040] Figure 10 This is a schematic diagram showing the insertion and snap-fit ​​connection.

[0041] In the diagram: 1. Battery cell module; 2. Heating layer; 31. Metal switch; 32. Pressure relief valve; 33. Charging / discharging socket; 34. Communication socket; 35. Protection board; 41. First bracket; 42. Second bracket; 43. First baffle; 44. Second baffle; 5. Heat insulation component; 51. First contact surface; 511. First corrugated pattern; 52. Second contact surface; 53. Deformation space; 54. Bending section; 541. Second corrugated pattern; 542. Extension groove; 6. Connector; 61. Pressing plate; 62. Pin; 621. Hook; 63. Connector; 631. Socket; 632. Slot; 7. EVA foam; 8. Outer shell; 81. First shell; 82. Second shell. Detailed Implementation

[0042] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0043] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0044] like Figures 1-10 As shown, the present invention provides a heated and insulated logistics vehicle battery structure, including: a cell module 1, wherein the cell module 1 is composed of a plurality of cells and the cells are electrically connected to each other, and the cell module 1 is provided with a heating layer 2, an isolation layer and at least three insulation layers.

[0045] An isolation layer is used to balance the heat within the battery cell module 1 and reduce heat diffusion.

[0046] Heating layer 2 is used to provide heat to battery cell module 1;

[0047] The insulation layer is used to keep the battery cell module 1 warm and extend the insulation time.

[0048] The working principle and beneficial effects of the above technical solution are as follows: The three-layer insulation design can significantly improve the insulation effect and extend the insulation time. The isolation layer set in the cell module 1 can isolate the cells from each other, effectively preventing heat spread and diffusion between adjacent cells, and improving the insulation time. In the environment of low-temperature cold storage at -25℃, this application can still be used safely and stably. The main reason is that the cell module 1 is designed with a heating layer 2, an isolation layer and three insulation layers, which has a good temperature maintenance function. The BMS protection board 35 set on the first bracket 41 and the second bracket 42 has a temperature probe and a temperature control switch. When the temperature of the heating layer 2 exceeds the critical value, the heating layer 2 can be automatically started and stopped.

[0049] Furthermore, the insulation layer consists of three layers: a first insulation layer, a second insulation layer, and a third insulation layer; the first insulation layer is composed of a first support 41, a second support 42, a first baffle 43, and a second baffle 44.

[0050] The first bracket 41 and the second bracket 42 are connected to form a frame that surrounds the battery cell module 1, as shown below. Figure 2 As shown, the battery cell module 1 can be locked and fixed to the screw post structure of the first bracket 41 and the second bracket 42 with M3 self-tapping screws, and nickel sheets are welded to the limiting mounting points of the first bracket 41 and the second bracket 42 to realize the electrical connection between the battery cells in the battery cell module 1.

[0051] The first baffle 43 is disposed on the side of the first bracket 41 away from the second bracket 42;

[0052] The second baffle 44 is disposed on the side of the second bracket 42 away from the first bracket 41;

[0053] The first bracket 41, the second bracket 42, the first baffle 43, and the second baffle 44 form an inner shell that seals the cell module 1, and the sealed inner shell forms the first heat insulation layer of the battery structure.

[0054] The insulating layer is disposed inside the inner shell. Further, the inner shell is filled with a thermally conductive medium, which forms the insulating layer between the cells of the battery module 1. The thermally conductive medium can be injected into the inner shell through the potting holes on the first support 41 and / or the second support 42. The thermally conductive medium is typically thermally conductive adhesive. A second insulation layer and a third insulation layer are sequentially disposed on the outer wall of the inner shell.

[0055] Furthermore, the heating layer 2 consists of two heating devices disposed inside the inner shell. The heating devices can be commercially available heating elements with heating functions or existing technologies capable of achieving heating functions. The two heating devices are located in the first bracket 41 and the second bracket 42, respectively. One heating device is connected to the first baffle 43 through EVA foam 7, and the other heating device is connected to the second baffle 44 through EVA foam 7. The heating devices are connected to the end of the battery cell module 1.

[0056] Furthermore, the periphery of the battery cell module 1 is enclosed by the first bracket 41 and the second bracket 42, and the first baffle 43 and the second baffle 44, EVA foam 7, and heating element 2 are installed on the top and bottom. Then, thermally conductive adhesive is poured through the potting hole to form a sealed whole. The battery cell module 1 is isolated from the outside by the inner shell, forming a relatively enclosed space to achieve a heat preservation effect. In addition, because the high thermal conductivity adhesive is filled between the battery cells, when the heating element 2 heats the battery cell module 1, the thermally conductive adhesive can play a role in heat conduction, so that the battery cell module 1 (e.g., Figure 3The 84 cells in the 14S6P cell module shown exhibit even heat distribution and good temperature consistency, preventing situations where a single cell's high temperature triggers heating protection while other cells remain unheated. Furthermore, the thermally conductive adhesive encapsulating the cells forms an insulating layer, effectively preventing heat diffusion and spread between them. This insulating layer serves both to isolate the cells and to ensure even heating; the adhesive also provides thermal insulation for the cell module 1.

[0057] Furthermore, the second insulation layer consists of a heat insulation component 5 with heat insulation function disposed on the outer wall of the inner shell, and a connector 6 for fixing the heat insulation component 5 to the outer wall of the inner shell. The heat insulation component 5 can be heat insulation cotton, and the connector 6 can be adhesive. The heat insulation cotton is glued to the outer wall of the outer shell (usually glued to two baffles) by adhesive to form the second insulation layer, and the third insulation layer is wrapped around the outside of the second insulation layer.

[0058] Furthermore, it also includes an outer shell 8, the inner shell being disposed inside the outer shell 8, and a third insulation layer being disposed on the inner side wall of the outer shell 8. The outer shell 8 is usually a sheet metal part, and a metal switch 31, a pressure relief valve 32, a charging / discharging socket 33 (such as the commercially available Weipu WY28K3ZC), and a communication socket 34 (as shown in the commercially available Weipu WY16K10Z).

[0059] Furthermore, the third insulation layer is a shaped heat insulation medium that fills the gap between the inner wall of the outer shell 8 and the second insulation layer, and has the functions of heat insulation and structural fixation. The shaped heat insulation medium is usually heat insulation foam. The heat insulation foam fills the gap between the outer shell 8 and the inner shell, and also plays a role in heat insulation.

[0060] Furthermore, the outer shell 8 is composed of a first shell 81 and a second shell 82, the first shell 81 and the second shell 82 are connected, and the battery cell module 1, the heating layer 2, the isolation layer and the three insulation layers are sealed inside the outer shell 8.

[0061] This application designs a heating layer 2, an isolation layer, and three insulation layers for the battery cell module 1. The battery cell module 1 can be heated by a heating device and heated evenly by thermally conductive adhesive. At the same time, the battery cells are isolated from each other by thermally conductive adhesive to prevent heat spread and diffusion between adjacent battery cells. The three insulation layers can maintain a constant temperature for a long time, allowing this application to be used for a long time in low-temperature environments.

[0062] Furthermore, in the aforementioned embodiments, we mentioned that thermal insulation cotton can be used as the heat insulation component 5 and adhesive as the connector 6 to form a second thermal insulation layer. In practical applications, we found that although this implementation method has the lowest cost and is the most convenient for battery production and installation, its thermal insulation effect is not ideal. This is because when filling the outer shell 8 with thermal insulation foam, the thermal insulation cotton will be flattened. The thermal insulation cotton relies on the air in its gaps for insulation. Once it is flattened and compacted by the foam, the thermal insulation effect will be greatly reduced. In addition, in order to speed up the installation efficiency of the thermal insulation cotton, it is usually only glued to the two baffles. Therefore, the side wall of the inner shell (i.e., the outer wall of the frame surrounded by the two supports) is in direct contact with the foam. This area cannot be covered by the second thermal insulation layer, which further reduces the thermal insulation effect.

[0063] In addition, because adhesive is used to fix the insulation cotton to the two baffles, it is very difficult to remove the insulation cotton and adhesive from the two baffles during battery recycling and repair, because the compression of the foam will make the two stick together very firmly.

[0064] Since the first insulation layer is a closed inner shell and the third insulation layer is filled with expanding foam, the insulation efficiency and insulation time can only be improved by further optimizing the design of the second insulation layer.

[0065] In this embodiment, we provide a specific structure for a heat insulation component 5 and a connector 6. The heat insulation component 5 is made of an elastic porous material, such as memory foam. A deformation space 53 is provided inside the heat insulation component 5. The surface area of ​​the deformation space 53 is not less than the surface area of ​​the heating layer 2. The heat insulation component 5 has a first contact surface 51 that contacts the first baffle 43 (or the second baffle 44), and a second contact surface 52 that contacts the expanding foam. The first contact surface 51 and the second contact surface 52 are located on the upper and lower sides of the deformation space 53, respectively. Figure 6 As shown, when the heat insulation component 5 is not installed on the first baffle 43 (or the second baffle 44), it is a rectangular sheet structure. The edges of the heat insulation component 5 (i.e. the four sides of the rectangle) are provided with bent sections 54. The bent sections 54 do not intersect with the projection of the deformation space 53 on the horizontal plane (i.e., when the bent sections 54 deform, they will not affect the deformation space 53).

[0066] When setting up the heat insulation component 5, place one heat insulation component 5 on a flat surface with the first contact surface 51 facing upwards. Then, place the inner shell on the heat insulation component 5, so that the first contact surface 51 contacts the second baffle 44. Because the inner shell contains the battery module 1, its weight is relatively large and can press down on the heat insulation component 5. Then, place another heat insulation component 5 on top of the inner shell, so that the first contact surface 51 lies flat on the first baffle 43. Then, bend the bent sections 54 of the two heat insulation components 5 along the side wall of the inner shell, and make the end faces of the bent sections 54 of the two heat insulation components 5 abut together. Connect the bent sections 54 of the two heat insulation components 5 together with the connector 6. Figure 5 As shown, this allows the two heat insulation components 5 to completely enclose the inner shell.

[0067] Because of the presence of a deformation space 53 and the use of a flexible porous material to make the insulation component 5, when the foam extrudes the insulation component 5, as the insulation component 5 is compressed and deformed, the deformation space 53 can form small air pockets, preventing the insulation component 5 from being compacted like thermal insulation cotton.

[0068] Furthermore, the first contact surface 51 is provided with a first wave pattern 511, such as... Figure 6 and Figure 7 As shown, this results in a hollow channel being formed when the first contact surface 51 is attached to the baffle. When the foam expands, it will block and seal the opening of the first corrugated 511 at the end of the heat insulation component 5, thereby forming an air column and further preventing the heat insulation component 5 from being compacted.

[0069] Furthermore, a second wave pattern 541 is provided on the plane where the bent section 54 connects to the first contact surface 51. When the bent section 54 is bent, the plane connected to the first contact surface 51 will adhere to or be close to the outer wall of the inner shell. When the expanding foam squeezes the bent section 54, the plane connected to the first contact surface 51 will adhere to the outer wall of the inner shell. At this time, the second wave pattern 541 is the same as the first wave pattern 511, and the openings at both ends will be blocked and sealed by the expanding foam, forming an air column on the outer wall of the inner shell. Through the deformation space 53, the first wave pattern 511 and the second wave pattern 541, it can be ensured that the heat insulation component 5 will not be compacted by the expanding foam, thereby greatly improving the heat insulation effect and extending the heat insulation time.

[0070] Furthermore, an extension groove 542 is provided on the plane connecting the bent section 54 and the second contact surface 52. The extension grooves 542 of the four bent sections 54 (i.e., the four sides) of the heat insulation member 5 are interconnected. The extension grooves 542 can provide sufficient deformation when the bent section 54 is bent to prevent it from being torn during bending. Figure 7 As shown.

[0071] Furthermore, the connector 6 comprises an insert and a snap-fit ​​member 63. The insert is T-shaped and consists of a horizontal pressure plate 61 and a vertical pin 62. The snap-fit ​​member 63 is a sheet-like structure with insertion holes 631, and is parallel to the pressure plate 61. The pin 62 has a U-shaped cross-section and is provided with multiple hooks 621, such as... Figure 8 As shown, the pin 62 passes through the insertion hole 631 and is engaged with the snap-fit ​​member 63 via the hook 621. After the two heat insulation components 5 are assembled, the pin 62 of the insert is passed through the bent section 54 of the two heat insulation components 5, so that the pressure plate 61 presses on the plane where one of the bent sections 54 connects to the second contact surface 52. Then, the snap-fit ​​member 63 is connected to the insert, and the pin 62 is inserted through the insertion hole 631, so that the snap-fit ​​member 63 fits against the plane where the bent section 54 of the other heat insulation component 5 connects to the second contact surface 52, and the snap-fit ​​member 63 is snapped onto the hook 621 of the pin 62. Because the heat insulation component 5 is elastic, the hook 621 is firmly snapped onto the snap-fit ​​member 63.

[0072] Furthermore, the socket 631 is provided with at least two slots 632, which communicate with the socket 631. The distance between the openings of the U-shaped cross-section of the pin 62 is adapted to the distance between two adjacent slots 632. That is, when the central angle α of two adjacent slots 632 is 90 degrees, the included angle b between the two sides of the U-shaped cross-section of the pin 62 is also 90 degrees. Figure 9 As shown.

[0073] When installing the insert and the snap-fit ​​63, the snap hook 621 of the pin 62 is placed in the slot 632 and then passed through the socket 631, as shown. Figure 10 As shown in Figure A.

[0074] After the latching member 63 moves to the position of the latch 621, rotate the latching member 63 to move the latch 621 away from the position of the slot 632, thereby causing the latch 621 to engage with the latching member 63. Figure 10 As shown in B.

[0075] A method for assembling a battery structure for a heated and insulated logistics vehicle, characterized by the following steps:

[0076] S1: Place the battery cell module 1 inside the first bracket 41 and the second bracket 42, and connect the first bracket 41 and the second bracket 42.

[0077] S2: A heating device is installed on the first bracket 41 and the second bracket 42. One heating device is fixed on the first bracket 41 by the first baffle 43, and the other heating device is fixed on the second bracket 42 by the second baffle 44, forming an inner shell with a heating layer 2 and sealing the battery cell module 1. The sealed inner shell forms the first heat insulation layer.

[0078] S3: Fill the interior of the inner shell with a heat-conducting medium, which forms an isolation layer inside the inner shell;

[0079] S4: A heat insulation element 5 is provided on the outer surface of the inner shell, and the heat insulation element 5 forms a second heat insulation layer;

[0080] S5: Place the inner shell with the second insulation layer inside the outer shell 8, and fill the outer shell 8 with a shaped heat insulation medium, which forms the third insulation layer.

[0081] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0082] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0083] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. Other modifications can be easily made by those skilled in the art. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A battery structure for a heated and insulated logistics vehicle, comprising: A battery cell module (1) is composed of a number of battery cells that are electrically connected to each other. The battery cell module (1) is characterized by having a heating layer (2), an isolation layer and at least three heat insulation layers. An isolation layer is used to balance the heat within the battery cell module (1) and reduce heat diffusion; The heating layer (2) is used to provide heat to the battery cell module (1); The insulation layer is used to keep the battery cell module (1) warm and extend the insulation time.

2. The battery structure for a heated and insulated logistics vehicle according to claim 1, characterized in that, The insulation layer consists of three layers: the first insulation layer, the second insulation layer, and the third insulation layer. The first insulation layer is composed of a first support (41), a second support (42), a first baffle (43), and a second baffle (44). The first bracket (41) is connected to the second bracket (42) to form a frame that wraps around the battery cell module (1); The first baffle (43) is located on the side of the first bracket (41) away from the second bracket (42); The second baffle (44) is located on the side of the second bracket (42) away from the first bracket (41); The first bracket (41), the second bracket (42), the first baffle (43), and the second baffle (44) form an inner shell that seals the battery cell module (1); The outer wall of the inner shell is provided with a second insulation layer and a third insulation layer in sequence.

3. The heating and insulation battery structure for logistics vehicles according to claim 2, characterized in that, The heating layer (2) consists of two heating devices located inside the inner shell. The two heating devices are located in the first bracket (41) and the second bracket (42) respectively. One heating device is connected to the first baffle (43) through EVA foam (7), and the other heating device is connected to the second baffle (44) through EVA foam (7). The heating devices are connected to the end of the battery cell module (1).

4. The heating and insulation battery structure for logistics vehicles according to claim 2, characterized in that, The isolation layer is disposed inside the inner shell.

5. The heating and insulation battery structure for logistics vehicles according to claim 4, characterized in that, The inner shell is filled with a thermally conductive medium, which forms the isolation layer between the cells of the cell module (1).

6. The battery structure for a heated and insulated logistics vehicle according to claim 2, characterized in that, The second insulation layer consists of a heat insulation component (5) installed on the outer wall of the inner shell and a connector (6) for fixing the heat insulation component (5) to the outer wall of the inner shell. The third insulation layer is wrapped around the outside of the second insulation layer.

7. The battery structure for a heated and insulated logistics vehicle according to claim 6, characterized in that, It also includes an outer shell (8), the inner shell being disposed inside the outer shell (8), and a third insulation layer being disposed on the inner sidewall of the outer shell (8).

8. The battery structure for a heated and insulated logistics vehicle according to claim 6, characterized in that, The third insulation layer is a shaped heat insulation medium that fills the space between the inner wall of the outer shell (8) and the second insulation layer and has the functions of heat preservation and structural fixation.

9. The battery structure for a heated and insulated logistics vehicle according to claim 6, characterized in that, The outer shell (8) is composed of a first shell (81) and a second shell (82), the first shell (81) and the second shell (82) are connected, and the battery cell module (1), heating layer (2), isolation layer and three insulation layers are sealed inside the outer shell (8).

10. A method for assembling a battery structure for a heated and insulated logistics vehicle, characterized in that, The steps are as follows: S1: Place the battery cell module (1) inside the first bracket (41) and the second bracket (42), and connect the first bracket (41) and the second bracket (42); S2: Install heating devices on the first bracket (41) and the second bracket (42), fix one heating device on the first bracket (41) by the first baffle (43), and fix the other heating device on the second bracket (42) by the second baffle (44), forming an inner shell with a heating layer (2) and sealing the battery cell module (1), and the sealed inner shell forms a first heat insulation layer; S3: Fill the interior of the inner shell with a heat-conducting medium, which forms an isolation layer inside the inner shell; S4: A heat insulation element (5) is provided on the outer surface of the inner shell, and the heat insulation element (5) forms a second heat insulation layer; S5: Place the inner shell with the second insulation layer inside the outer shell (8) and fill the outer shell (8) with a shaped heat insulation medium, which forms a third insulation layer.

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