Battery pack and new energy automobile

Abstract

The embodiment of the utility model provides a battery pack and a new energy automobile, and relates to the technical field of power batteries. The battery pack comprises a battery box body, a battery module and a heat conduction supporting plate, the battery module comprises a module shell and a plurality of battery cells, the module shell is arranged in the battery box body, and an opening is formed in one side of the module shell; the plurality of battery cells are arranged in the module shell, and the pole columns of the plurality of battery cells extend out of the opening; the module shell is used for transferring heat of the plurality of battery cells to the battery box body; the heat conduction supporting plate is arranged between the pole and the inner side wall of the battery box body and is used for transferring the heat of the pole to the battery box body. The battery pack is good in heat conduction effect, the number of parts can be reduced, the cost is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a battery pack and a new energy vehicle. Background Art

[0002] In the power battery industry, the battery cells in the battery pack are usually fixed by structures such as frames and end plates. Specifically, plastic parts, C-shaped irons, long screws and other structural parts are assembled with the battery cells to form a frame structure and a small module, which is then placed inside the battery shell for secondary fixation.

[0003] However, with this frame structure, the thermal conductivity of the battery cell is poor, and more structural parts are used, resulting in low assembly efficiency and increased costs. Utility Model Content

[0004] The utility model aims to provide a battery pack and a new energy vehicle, which have good heat conduction effect, can reduce the number of parts, reduce costs, and improve assembly efficiency.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a battery pack, comprising:

[0007] Battery box;

[0008] A battery module, the battery module comprising a module shell and a plurality of battery cells, the module shell being arranged in the battery case, and having an opening on one side of the module shell; the plurality of battery cells being arranged in the module shell, and poles of the plurality of battery cells extending from the opening; the module shell being used to transfer heat of the plurality of battery cells to the battery case; and

[0009] A heat-conducting support plate is disposed between the pole and the inner side wall of the battery case and is used to transfer the heat of the pole to the battery case.

[0010] In an optional embodiment, there are multiple module shells, and the multiple module shells are stacked in sequence on the battery case. Two adjacent module shells are fixed by structural adhesive, and each of the module shells is provided with the multiple battery cells. The openings of the multiple module shells are all located on the same side, and the heat-conductive support plate is used to transfer the heat of the poles of the multiple battery cells in each of the module shells to the battery case.

[0011] In an optional embodiment, the battery pack further includes a thermally conductive pad, which is disposed between the module shell and an inner side wall of the battery case and is located on a side of the module shell away from the opening.

[0012] In an optional embodiment, the battery module further includes a cover plate, which is disposed at the opening and connected to the module shell; the cover plate is provided with a plurality of notches, the plurality of notches are arranged at intervals, and the pole of each of the battery cells extends from the notch and is connected to the pole of an adjacent battery cell.

[0013] In an optional embodiment, the heat-conducting support plate is wavy in shape, including a plurality of protrusions and a plurality of recessed portions, the plurality of protrusions are connected to the plurality of recessed portions in sequence in an alternating manner, the plurality of protrusions are in contact with the poles, and a first heat-conducting glue is provided between the plurality of recessed portions and the cover plate.

[0014] In an optional embodiment, a plurality of fixing portions are provided on a side of the cover plate away from the opening, the plurality of fixing portions are arranged at intervals along an arrangement direction of the plurality of notches, and are used to fix a wiring harness of the battery pack.

[0015] In an optional embodiment, the battery module further comprises a plurality of partition plates, wherein the plurality of partition plates are spaced apart in the module shell so as to divide the module shell into a plurality of battery cell accommodating cavities, each of which is provided with at least one battery cell.

[0016] In an optional embodiment, a plurality of first card slots and a plurality of second card slots are respectively provided on opposite sides of the module shell, the plurality of first card slots are spaced apart and are all connected to the opening, the plurality of second card slots are spaced apart and are all connected to the opening; each of the partition plates is provided with a first clamping portion and a second clamping portion at both ends close to the opening, the plurality of first clamping portions are snap-fitted with the plurality of first card slots in a one-to-one correspondence, and the plurality of second clamping portions are snap-fitted with the plurality of second card slots in a one-to-one correspondence.

[0017] In an optional embodiment, a second thermally conductive adhesive is provided between the plurality of battery cells and the side wall of the module shell.

[0018] In a second aspect, the utility model provides a new energy vehicle, comprising a battery pack as described in any one of the aforementioned embodiments.

[0019] The beneficial effects of the embodiments of the utility model include:

[0020] The battery pack includes a battery case, a battery module and a heat-conducting support plate. The battery module includes a module shell and a plurality of battery cells. The module shell is arranged in the battery case, and one side of the module shell has an opening; the plurality of battery cells are arranged in the module shell, and the poles of the plurality of battery cells extend from the opening; the module shell is used to transfer the heat of the plurality of battery cells to the battery case; the heat-conducting support plate is arranged between the pole and the inner side wall of the battery case, and is used to transfer the heat of the pole to the battery case. By setting the module shell, it is possible to provide an installation space for the battery cell. After the battery cell is installed in the module shell, it is directly assembled into the battery case. The assembly operation is simple, and there is no need to use a large number of structural parts to fix the battery cell into a frame structure, which can reduce the number of parts, reduce costs and improve assembly efficiency; at the same time, the heat of the battery cell shell can be transferred to the battery case through the module shell for heat dissipation, and the heat generated by the pole of the battery cell is transferred to the battery case through the heat-conducting support plate for heat dissipation, so that the heat dissipation of the battery cell is sufficient, and the overall heat conduction effect of the battery pack is improved.

[0021] The new energy vehicle includes the battery pack and has all the beneficial effects of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a new energy vehicle provided by an embodiment of the utility model;

[0024] Figure 2 An exploded view of a battery pack provided in an embodiment of the utility model;

[0025] Figure 3 An exploded view of a battery module provided by an embodiment of the utility model;

[0026] Figure 4 A schematic diagram of the structure of a battery pack provided by an embodiment of the utility model;

[0027] Figure 5 A schematic diagram of a portion of the structure of a battery module provided by an embodiment of the utility model from a first perspective;

[0028] Figure 6 A schematic diagram of the structure of the cover plate provided in the embodiment of the utility model;

[0029] Figure 7 A schematic diagram of the structure of a heat-conducting support plate provided in an embodiment of the utility model;

[0030] Figure 8 A schematic diagram of the assembly of the module housing and the partition plate provided in an embodiment of the utility model;

[0031] Fig. 9 A schematic diagram of the structure of a module housing provided in an embodiment of the utility model;

[0032] Fig.10 A partial structural schematic diagram of a battery module from a second perspective provided in an embodiment of the utility model.

[0033] Icons: 1000-new energy vehicle; 100-battery pack; 10-battery case; 11-first support bar; 12-second support bar; 20-battery module; 21-module housing; 211-opening; 212-first card slot; 213-second card slot; 214-bottom plate; 215-first side plate; 216-second side plate; 217-third side plate; 218-fourth side plate; 22-battery cell; 221-pole; 23-cover plate; 231-notch; 232-fixing part; 24-partition plate; 241-first clamping part; 242-second clamping part; 25-battery cell accommodating cavity; 26-connector; 27-buffer pad; 30-thermal support plate; 31-raised part; 32-recessed part; 40-thermal pad; 50-first thermal conductive adhesive; 60-second thermal conductive adhesive; 200-body. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0038] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] As described in the background technology, in the power battery industry, the cells in the battery pack are usually fixed by structures such as frames and end plates, which specifically include the use of plastic parts, C-shaped irons, long screws and other structural parts to assemble with the cells into a frame structure and form a small module, which is then placed inside the battery shell for secondary fixation. However, with this frame structure, the thermal conductivity of the cells is poor, and more structural parts are used, resulting in low assembly efficiency and increased costs.

[0041] Based on this, please refer to Figure 1-Figure 10 The embodiment of the utility model provides a battery pack 100 and a new energy vehicle 1000, which can effectively improve the above-mentioned technical problems, that is, it has good thermal conductivity, can reduce the number of parts, reduce costs, and improve assembly efficiency. The battery pack 100 and the new energy vehicle 1000 will be described in detail below.

[0042] Please refer to Figure 1 , Figure 1 The schematic diagram of the structure of the new energy vehicle 1000 provided in this embodiment is combined with Figure 1The new energy vehicle 1000 includes a battery pack 100 and a vehicle body 200 . The battery pack 100 is installed on the vehicle body 200 , thereby providing electrical energy to the vehicle body 200 to realize various functions of the vehicle body 200 .

[0043] Specifically, please refer to Figure 2 and Figure 3 , Figure 2 An exploded view of the battery pack 100 provided in this embodiment, Figure 3 The exploded view of the battery module 20 provided in this embodiment is combined with Figure 2 and Figure 3 The battery pack 100 includes a battery case 10, a battery module 20 and a heat-conducting support plate 30. The battery module 20 includes a module shell 21 and a plurality of battery cells 22. The module shell 21 is arranged in the battery case 10, and one side of the module shell 21 has an opening 211; the plurality of battery cells 22 are arranged in the module shell 21, and the poles 221 of the plurality of battery cells 22 extend from the opening 211; the module shell 21 is used to transfer the heat of the plurality of battery cells 22 to the battery case 10; the heat-conducting support plate 30 is arranged between the pole 221 and the inner side wall of the battery case 10, and is used to transfer the heat of the pole 221 to the battery case 10.

[0044] By setting up the module shell 21, an installation space can be provided for the battery cell 22. After the battery cell 22 is installed in the module shell 21, it can be directly assembled into the battery case 10. The assembly operation is simple, and there is no need to use a large number of structural parts to fix the battery cell 22 into a frame structure, which can reduce the number of parts, reduce costs and improve assembly efficiency. At the same time, the heat of the outer shell of the battery cell 22 can be transferred to the battery case 10 for heat dissipation through the module shell 21, and the heat generated by the pole 221 of the battery cell 22 is transferred to the battery case 10 for heat dissipation through the heat conductive support plate 30, so that the battery cell 22 can dissipate heat sufficiently, thereby improving the overall thermal conductivity of the battery pack 100.

[0045] In order to improve the energy density of the battery pack 100, there are multiple module shells 21, and the multiple module shells 21 are stacked in sequence on the battery case 10. Two adjacent module shells 21 are fixed by structural adhesive, and each module shell 21 is provided with multiple battery cells 22; the openings 211 of the multiple module shells 21 are all located on the same side, and the heat-conducting support plate 30 is used to transfer the heat of the poles 221 of the multiple battery cells 22 in each module shell 21 to the battery case 10.

[0046] like Figure 2As shown, in this embodiment, the number of module shells 21 is specifically four, and multiple battery cells 22 are arranged in each of the four module shells 21. It can be understood that each module shell 21 can be regarded as a small module after being assembled with multiple battery cells 22, that is, there are four small modules in this embodiment. By stacking multiple small modules in sequence and fixing two adjacent module shells 21 with structural adhesive, multiple module shells 21 form a stable structure. This frameless structure design can make the overall structure of the battery pack 100 compact and easy to install without increasing the number of parts, further improve assembly efficiency, reduce costs, and also increase the energy density of the entire pack.

[0047] To further improve the heat dissipation efficiency of the battery cell 22, please refer to Figure 4 , Figure 4 The schematic diagram of the structure of the battery pack 100 provided in this embodiment, combined with Figure 2-Figure 4 The battery pack 100 further includes a thermal pad 40, which is disposed between the module housing 21 and the inner side wall of the battery case 10, and is located on the side of the module housing 21 away from the opening 211. In this way, the thermal pad 40 can better transfer the heat of the module housing 21 to the battery case 10, and the thermal pad 40 and the thermal support plate 30 can dissipate heat from both sides of the battery module 20 respectively, and at the same time play a role in supporting the battery module 20, and can also make the battery module 20 not easy to shake in the battery case 10, and the whole package structure is stable.

[0048] Please continue to combine Figure 4 In order to further improve the stability of the battery module 20, the two opposite inner side walls of the battery box 10 are respectively provided with a first support bar 11 and a second support bar 12, and the first support bar 11 and the second support bar 12 are respectively abutted against the two opposite sides of the module shell 21. Figure 4 As shown, the first support bar 11, the heat-conducting support plate 30, the second support bar 12 and the heat-conducting pad 40 are sequentially arranged around the module shell 21, so that the battery module 20 is more stable in the battery box 10 and the overall structural strength is improved.

[0049] Please continue to combine Figure 3 In order to better fix the battery cell 22 in the module housing 21 , in the present embodiment, the battery module 20 further includes a cover plate 23 , which is disposed at the opening 211 and connected to the module housing 21 .

[0050] Specifically, please refer to Figure 5 and Figure 6 , Figure 5 A partial structural schematic diagram of a battery module 20 provided in this embodiment from a first perspective, Figure 6 The structural diagram of the cover plate 23 provided in this embodiment, combined with Figure 3 , Figure 5 and Figure 6 The cover plate 23 is provided with a plurality of notches 231, and the plurality of notches 231 are arranged at intervals. The pole 221 of each battery cell 22 extends from the notch 231 and is connected to the pole 221 of the adjacent battery cell 22. In other words, the cover plate 23 can limit the battery cell 22 in the first direction and support the battery cell 22; in addition, the poles 221 of two adjacent battery cells 22 can extend from two adjacent notches 231 respectively and then be connected to realize the series connection or parallel connection of multiple battery cells 22 in the module; and the heat conductive support plate 30 is used to conduct heat to the two connected poles 221.

[0051] It should be noted that the first direction mentioned above is Figure 3 The X direction is shown in FIG.

[0052] During the operation of the battery pack 100, it is usually necessary to detect various conditions of the battery cell 22 in real time through the collection line and other wiring harnesses. In order to fix these wiring harnesses, please combine Figure 3 and Figure 6 In this embodiment, a plurality of fixing portions 232 are provided on a side of the cover plate 23 away from the opening 211 . The plurality of fixing portions 232 are arranged at intervals along the arrangement direction of the plurality of notches 231 and are used to fix the wiring harness of the battery pack 100 .

[0053] It should be noted that the plurality of fixing portions 232 are arranged in a spaced relationship in the plurality of notches 231 along the second direction. Figure 3 It is easy to understand that the wiring harness can be threaded along the second direction and connected to each pole 221 in sequence, so as to better realize the detection of the battery cell 22, and also save the wiring harness or wiring length, thereby further saving costs.

[0054] like Figure 6 As shown, it should also be noted that, in this embodiment, the fixing portion 232 specifically includes a first bending section and a second bending section arranged on the cover plate 23, the first bending section and the second bending section are arranged close to each other, and the wiring harness can pass through the gap between the first bending section and the top of the cover plate 23 and between the second bending section and the top of the cover plate 23, thereby fixing the wiring harness on the cover plate 23.

[0055] Please refer to Figure 7 , Figure 7 The schematic diagram of the structure of the heat-conducting support plate 30 provided in this embodiment, combined with Figure 4 and Figure 7In the present embodiment, the shape of the heat-conducting support plate 30 is specifically a wave shape, including a plurality of raised portions 31 and a plurality of recessed portions 32, the plurality of raised portions 31 and the plurality of recessed portions 32 are alternately connected in sequence, the plurality of raised portions 31 are in contact with the pole 221, and a first heat-conducting adhesive 50 is provided between the plurality of recessed portions 32 and the cover plate 23.

[0056] It should be noted that the above-mentioned method of connecting the multiple protrusions 31 and the multiple recesses 32 in an alternating manner refers to a setting in which the protrusions 31, recesses 32, protrusions 31, recesses 32, protrusions 31, etc. are arranged in an alternating manner and then connected in sequence.

[0057] Through this wavy setting, the heat-conducting support plate 30 has a certain elasticity. When the battery module 20 and the heat-conducting support plate 30 are installed in the battery box 10, the wavy structure has a certain buffering effect, which can avoid installation difficulties caused by manufacturing errors. In addition, by injecting the first thermally conductive glue 50 between the recessed portion 32 and the cover plate 23, the adjacent protrusion 31 dissipates heat after contacting the pole 221, thereby saving the amount of thermally conductive glue. It is easy to understand that if the number of multiple protrusions 31 is the same as that of multiple recessed portions 32, half of the amount of thermally conductive glue can be saved compared to the method of injecting all the glue, thereby greatly reducing the production cost.

[0058] Please continue to combine Figure 3 In order to connect and fix the cover plate 23 to the module housing 21, in this embodiment, the battery module 20 further includes a connector 26, and the cover plate 23 and the module housing 21 are connected and fixed by the connector 26. Specifically, through holes can be respectively provided on opposite sides of the module housing 21 near the opening 211, and the connector 26 is passed through the through holes to be fixedly connected to the cover plate 23.

[0059] It should be noted that, in the present embodiment, the connecting member 26 is specifically a rivet. Of course, in other embodiments, the fixed connection structure is not limited thereto, and the connecting member 26 may also be other connection structures such as a bolt and a snap.

[0060] Please continue to combine Figure 3 In order to better install and arrange the multiple battery cells 22 in the module housing 21, in this embodiment, the battery module 20 further includes multiple partition plates 24, and the multiple partition plates 24 are arranged in the module housing 21 at intervals. Figure 8 , Figure 8 The schematic diagram of the assembly of the module housing 21 and the partition plate 24 provided in this embodiment is combined with Figure 3 and Figure 8 The module housing 21 is divided into a plurality of battery cell accommodating cavities 25 by a plurality of partition plates 24 , and at least one battery cell 22 is disposed in each battery cell accommodating cavity 25 .

[0061] Through the arrangement of multiple partition plates 24, it is possible to cooperate with the module housing 21 to limit the battery cell 22 in the second direction and the third direction, thereby better supporting and fixing the battery cell 22. It should be noted that the third direction mentioned above is Figure 3 The Z direction is shown in the figure, wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0062] Further, in order to facilitate the installation and removal of the partition plate 24, please refer to Fig. 9 , Fig. 9 The schematic diagram of the structure of the module housing 21 provided in this embodiment, combined with Figure 8 and Fig. 9 The two opposite sides of the module housing 21 are respectively provided with a plurality of first card slots 212 and a plurality of second card slots 213, the plurality of first card slots 212 are arranged at intervals and are all connected to the opening 211, and the plurality of second card slots 213 are arranged at intervals and are all connected to the opening 211; the two ends of each partition plate 24 close to the opening 211 are respectively provided with a first card connection portion 241 and a second card connection portion 242, the plurality of first card connection portions 241 are correspondingly engaged with the plurality of first card slots 212, and the plurality of second card connection portions 242 are correspondingly engaged with the plurality of second card slots 213. The skeleton structure formed by the module housing 21 and the partition plate 24 has the characteristics of simple structure, high stability, low cost and convenient installation.

[0063] like Fig. 9 As shown, it should be noted that, in this embodiment, the module housing 21 includes a bottom plate 214 and a first side plate 215, a second side plate 216, a third side plate 217 and a fourth side plate 218, which are all connected to the bottom plate 214, and the first side plate 215, the second side plate 216, the third side plate 217 and the fourth side plate 218 are sequentially connected end to end and enclosed together with the bottom plate 214 to form an installation space. It is easy to understand that a plurality of battery cells 22 are arranged in the installation space, and at the same time, a plurality of partition plates 24 divide the installation space into a plurality of battery cell accommodating chambers 25. The first side plate 215, the second side plate 216, the third side plate 217 and the fourth side plate 218 are enclosed in sequence at one end away from the bottom plate 214 to form an opening 211.

[0064] Please refer to Fig.10 , Fig.10 A partial structural diagram of the battery module 20 provided in this embodiment from a second perspective, combined with Fig.10 In order to better transfer the heat on the surface of the battery core 22 to the module housing 21 , a second thermal conductive adhesive 60 is provided between the plurality of battery cores 22 and the side wall of the module housing 21 .

[0065] Please combine Fig. 9 and Fig.10In the present embodiment, a second thermally conductive adhesive 60 is provided between the plurality of battery cells 22 and the second side plate 216, and between the plurality of battery cells 22 and the fourth side plate 218. The second thermally conductive adhesive 60 can assist in fixing the battery cells 22 while ensuring the thermal conductivity of the battery cells 22. In addition, since the amount of thermally conductive adhesive in the module housing 21 is small, the battery cells 22 can be easily disassembled or repaired and replaced at a later time, thus avoiding the disadvantage that the battery cells 22 bonded with structural adhesive in the existing method are difficult to disassemble.

[0066] Please continue to combine Figure 3 In order to better install and fix the multiple battery cells 22 and compensate for the position tolerance or gap set in the module shell 21, in this embodiment, the battery module 20 also includes a buffer pad 27, a buffer pad 27 is set between two adjacent battery cells 22, and a buffer pad 27 is also set between the battery cell 22 and the partition plate 24.

[0067] Please combine Figure 3 and Fig.10 Furthermore, a buffer pad 27 is also provided between the battery cell 22 and the first side plate 215, and between the battery cell 22 and the third side plate 217. That is to say, the buffer pad 27 and the second thermal conductive adhesive 60 are used to assist in fixing the battery cell 22 around, thereby further improving the stability of the battery cell 22, and greatly improving the overall structural strength of the battery pack 100.

[0068] In summary, an embodiment of the utility model provides a battery pack 100 and a new energy vehicle 1000, the battery pack 100 includes a battery case 10, a battery module 20 and a heat-conducting support plate 30, the battery module 20 includes a module shell 21 and a plurality of battery cells 22, the module shell 21 is arranged in the battery case 10, and one side of the module shell 21 has an opening 211; the plurality of battery cells 22 are arranged in the module shell 21, and the poles 221 of the plurality of battery cells 22 extend from the opening 211; the module shell 21 is used to transfer the heat of the plurality of battery cells 22 to the battery case 10; the heat-conducting support plate 30 is arranged between the pole 221 and the inner side wall of the battery case 10, and is used to transfer the heat of the pole 221 to the battery case 10. By setting up the module shell 21, an installation space can be provided for the battery cell 22. After the battery cell 22 is installed in the module shell 21, it can be directly assembled into the battery case 10. The assembly operation is simple, and there is no need to use a large number of structural parts to fix the battery cell 22 into a frame structure, which can reduce the number of parts, reduce costs and improve assembly efficiency. At the same time, the heat of the outer shell of the battery cell 22 can be transferred to the battery case 10 for heat dissipation through the module shell 21, and the heat generated by the pole 221 of the battery cell 22 is transferred to the battery case 10 for heat dissipation through the heat conductive support plate 30, so that the battery cell 22 can dissipate heat sufficiently, thereby improving the overall thermal conductivity of the battery pack 100.

[0069] The new energy vehicle 1000 includes the battery pack 100 , and has all the functions and beneficial effects of the battery pack 100 .

[0070] The above description is only a specific embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery pack, characterized in that: include: Battery box (10); A battery module (20), the battery module (20) comprising a module shell (21) and a plurality of battery cells (22), the module shell (21) being arranged in the battery case (10), and one side of the module shell (21) having an opening (211); the plurality of battery cells (22) being arranged in the module shell (21), and poles (221) of the plurality of battery cells (22) extending out from the opening (211); the module shell (21) being used for transferring heat of the plurality of battery cells (22) to the battery case (10); as well as A heat-conducting support plate (30), the heat-conducting support plate (30) being arranged between the pole (221) and the inner side wall of the battery box (10), and being used for transferring the heat of the pole (221) to the battery box (10).

2. The battery pack according to claim 1, characterized in that: There are multiple module shells (21), and the multiple module shells (21) are stacked in sequence on the battery case (10). Two adjacent module shells (21) are bonded and fixed by structural adhesive, and each module shell (21) is provided with the multiple battery cells (22); the openings (211) of the multiple module shells (21) are all located on the same side, and the heat-conducting support plate (30) is used to transfer the heat of the poles (221) of the multiple battery cells (22) in each module shell (21) to the battery case (10).

3. The battery pack according to claim 1, characterized in that: The battery pack (100) further comprises a thermal pad (40), wherein the thermal pad (40) is arranged between the module shell (21) and the inner side wall of the battery case (10), and is located on a side of the module shell (21) away from the opening (211).

4. The battery pack according to claim 1, characterized in that: The battery module (20) further comprises a cover plate (23), the cover plate (23) being arranged at the opening (211) and connected to the module housing (21); the cover plate (23) is provided with a plurality of notches (231), the plurality of notches (231) being arranged at intervals, and the pole (221) of each battery cell (22) protrudes from the notch (231) and is connected to the pole (221) of an adjacent battery cell (22).

5. The battery pack according to claim 4, characterized in that: The heat-conducting support plate (30) is wavy in shape, comprising a plurality of raised portions (31) and a plurality of recessed portions (32), wherein the plurality of raised portions (31) and the plurality of recessed portions (32) are sequentially connected in an alternating manner, the plurality of raised portions (31) are in contact with the pole (221), and a first heat-conducting adhesive (50) is provided between the plurality of recessed portions (32) and the cover plate (23).

6. The battery pack according to claim 4, characterized in that: A plurality of fixing portions (232) are provided on a side of the cover plate (23) away from the opening (211); the plurality of fixing portions (232) are arranged at intervals along the arrangement direction of the plurality of notches (231) and are used to fix the wiring harness of the battery pack (100).

7. The battery pack according to claim 1, characterized in that: The battery module (20) further comprises a plurality of partition plates (24), wherein the plurality of partition plates (24) are arranged at intervals on the module housing (21) so as to divide the module housing (21) into a plurality of battery cell accommodating cavities (25), and each of the battery cell accommodating cavities (25) is provided with at least one of the battery cells (22).

8. The battery pack according to claim 7, characterized in that: The module shell (21) is provided with a plurality of first card slots (212) and a plurality of second card slots (213) on opposite sides thereof; the plurality of first card slots (212) are arranged at intervals and are all in communication with the opening (211); the plurality of second card slots (213) are arranged at intervals and are all in communication with the opening (211); and each of the partition plates (24) is provided with a first card connection portion (241) and a second card connection portion (242) at both ends of the portion close to the opening (211); the plurality of first card connection portions (241) are card-engaged with the plurality of first card slots (212) in a one-to-one corresponding manner, and the plurality of second card connection portions (242) are card-engaged with the plurality of second card slots (213) in a one-to-one corresponding manner.

9. The battery pack according to claim 1, characterized in that: A second heat-conducting adhesive (60) is provided between the plurality of battery cells (22) and the side wall of the module housing (21).

10. A new energy vehicle, characterized in that: A battery pack (100) comprising any one of claims 1 to 9.

Images