Battery pack and vehicle

Abstract

The utility model discloses a battery pack and a vehicle, the battery pack comprises: a housing, the housing is an integrated piece and comprises a housing body and first separator plates, a cavity is arranged in the housing body, the cavity comprises a plurality of first cavities arranged at intervals along a first direction, a first separator plate is arranged between two adjacent first cavities, and the first separator plates are arranged at intervals along the first direction; at least one of the two ends, in the second direction, of the first cavity is opened to form a first opening; the plurality of pole cores are arranged, and the plurality of pole cores are respectively arranged in the plurality of first cavities; and each first opening is connected with the corresponding cover plate for blocking the corresponding first opening. The number of parts can be reduced, the cost is reduced, the weight is reduced, the energy utilization efficiency is improved, the energy consumption is reduced, and the endurance mileage is increased. In addition, the size of the battery pack can be reduced, the space layout in the vehicle is optimized, and the riding comfort is improved. And meanwhile, the structure and layout of the battery pack can be optimized, and the battery energy density is improved, so that the endurance mileage of the energy vehicle is further increased to a certain extent.

Description

Technical Field

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

[0002] In the related art, battery cells are combined into battery modules and then into a battery pack, and the battery pack is installed in the vehicle chassis. There are many components, resulting in a heavier weight of the whole vehicle, a lower weight energy density, reduced energy utilization efficiency, increased energy consumption, and reduced cruising range. In addition, the volume energy density of the battery will be reduced, and the volume of the battery pack will be relatively large, with low space utilization rate, reducing the riding comfort. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a battery pack, which has fewer components, low cost, low energy consumption, and a long cruising range.

[0004] The utility model also provides a vehicle, which includes the above-mentioned battery pack.

[0005] The battery pack according to an embodiment of the utility model includes: a housing, the housing is an integral part and includes a housing body and a first partition. A cavity is formed in the housing body. The cavity includes a plurality of first cavities spaced along a first direction. A first partition is provided between two adjacent first cavities. At least one end of each first cavity in the second direction is open to form a first opening. The first direction is perpendicular to the second direction; a plurality of electrode cores, the plurality of electrode cores are respectively arranged in the plurality of first cavities; a cover plate, and a cover plate is connected to each first opening for blocking the first opening.

[0006] According to the battery pack of the embodiment of the utility model, by providing an integral housing, and making the cavity in the housing include a plurality of first cavities spaced along a first direction, two adjacent first cavities are spaced by a first partition, a plurality of electrode cores are respectively placed in the plurality of first cavities, and the cover plate is connected to the housing to block the open opening of the first cavity, so as to form a plurality of battery cells, and the number of components can be reduced, the cost can be reduced, and at the same time, the weight of the battery pack can be reduced, thereby reducing the weight of the vehicle applying the battery pack, which is beneficial to improving the energy utilization efficiency, reducing the energy consumption, and increasing the cruising range. In addition, the volume of the battery pack can be reduced, the space occupied by the battery pack in the vehicle can be reduced, the layout of the vehicle interior space can be optimized, the passenger compartment of the vehicle can be made more spacious, and the riding comfort can be improved. At the same time, the structure and layout of the battery pack can be optimized, and the battery energy density can be increased, so as to further increase the cruising range of the new energy vehicle to a certain extent.

[0007] According to some embodiments of the present utility model, a gap cavity is provided inside the first partition board.

[0008] In some embodiments of the present utility model, along the first direction, the size of the gap cavity is smaller than that of the first cavity; and / or, along the second direction, the size of the gap cavity is the same as that of the first cavity; and / or, along the third direction, the size of the gap cavity is the same as that of the first cavity, and the first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0009] According to some embodiments of the present utility model, the cavity further includes a second cavity. One end of the first partition board along the second direction is retracted inside the housing body and forms the second cavity with the housing body. The second cavity extends along the first direction and is located on one side of the plurality of first cavities along the second direction. The battery pack further includes: a battery management system, which is disposed inside the second cavity.

[0010] According to some embodiments of the present utility model, the cavity further includes a third cavity. The third cavity is located on one side of the plurality of first cavities along the third direction. The housing further includes a second partition board. The second partition board is provided between the third cavity and the plurality of first cavities. One end of the plurality of first partition boards along the third direction is connected to the second partition board. The first direction, the second direction, and the third direction are perpendicular to each other in pairs. The battery pack further includes: a heating and / or cooling component, which is disposed inside the third cavity.

[0011] According to some embodiments of the present utility model, at least one side of the two sides of the cavity along the second direction is open to form a second open port. The battery pack further includes: a sealing cover, which is provided at the second open port for sealing the second open port.

[0012] According to some embodiments of the present utility model, a pole post is provided on the cover plate, and the tab of the electrode core is connected to the pole post through a metal connecting piece.

[0013] According to some embodiments of the present utility model, the housing body, the plurality of electrode cores, and the plurality of cover plates together form a plurality of battery cells, and the plurality of battery cells are connected in parallel or in series.

[0014] A vehicle according to an embodiment of the present utility model includes a vehicle body and the above-mentioned battery pack, and the battery pack is disposed at the bottom of the vehicle body.

[0015] A vehicle according to an embodiment of the present utility model, by providing the above-described battery pack, providing an integrated housing, and making the cavity in the housing include a plurality of first cavities spaced apart in a first direction, and adjacent two first cavities are spaced apart by a first partition, placing a plurality of electrode cores into the plurality of first cavities respectively, and connecting a cover plate to the housing to seal the open mouth of the first cavity, thereby forming a plurality of battery cells, and the number of components can be reduced, the cost can be lowered, and at the same time the weight of the battery pack can be reduced, thereby reducing the weight of the vehicle applying the battery pack, which is beneficial to improving the energy utilization efficiency, reducing energy consumption, and increasing the cruising range. In addition, the volume of the battery pack can be reduced, the space of the vehicle occupied by the battery pack can be reduced, the layout of the interior space of the vehicle can be optimized, the passenger compartment of the vehicle can be made more spacious, and the riding comfort can be improved. At the same time, the structure and layout of the battery pack can be optimized, and the battery energy density can be increased, thereby further increasing the cruising range of the new energy vehicle to a certain extent.

[0016] According to some embodiments of the present utility model, the vehicle body includes a chassis and a floor, the floor is located above the chassis, and the housing is configured to be a part of the frame of the chassis and a part of the floor.

[0017] In some embodiments of the present utility model, the housing and the remaining part of the frame of the chassis are integrally formed.

[0018] In some embodiments of the present utility model, the housing and the remaining part of the frame of the chassis and the remaining part of the floor are all separately formed.

[0019] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0021] Figure 1 is a perspective view of a battery pack according to an embodiment of the present utility model;

[0022] Figure 2 is a perspective view of the housing of the battery pack according to an embodiment of the present utility model;

[0023] Figure 3 is a perspective view of the housing and the electrode core of the battery pack according to an embodiment of the present utility model;

[0024] Figure 4 is a perspective view of the housing, the electrode core and the cover plate of the battery pack according to an embodiment of the present utility model, wherein the electrode core is installed in the first cavity;

[0025] Figure 5 is the front view of the housing of the battery pack according to an embodiment of the present utility model;

[0026] Figure 6 is Figure 5 the enlarged partial view in

[0027] Figure 7 is the perspective view of the housing, electrode core, cover plate, battery management system, and heating and cooling assembly of the battery pack according to an embodiment of the present utility model, wherein the electrode core and the cover plate are already assembled with the housing;

[0028] Figure 8 is the perspective view of the housing, electrode core, cover plate, battery management system, heating and cooling assembly, and sealing cover of the battery pack according to an embodiment of the present utility model, wherein the electrode core, cover plate, battery management system, and heating and cooling assembly are already assembled with the housing;

[0029] Figure 9 is the perspective view of the cover plate and the metal connecting member of the battery pack according to an embodiment of the present utility model;

[0030] Figure 10 is the perspective view of the cover plate of the battery pack according to an embodiment of the present utility model;

[0031] Figure 11 is the enlarged partial view of the housing and the electrode core of the battery pack according to an embodiment of the present utility model.

[0032] Reference numerals:

[0033] 100, battery pack;

[0034] 1, housing; 11, first cavity; 12, clearance cavity; 13, second cavity; 14, third cavity; 15, housing body; 16, first partition; 17, second partition;

[0035] 2, electrode core; 21, metal connecting member; 22, tab;

[0036] 3, cover plate; 31, terminal post;

[0037] 4, battery management system;

[0038] 5, heating and cooling assembly;

[0039] 6, sealing cover. Detailed implementation manners

[0040] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation of the present utility model.

[0041] In the description of the present utility model, 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", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0042] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] Next, reference is made to Figures 1-11 describe the battery pack 100 according to an embodiment of the present utility model.

[0044] As Figures 1-4 shown, the battery pack 100 according to an embodiment of the present utility model includes a housing 1, a core 2, and a cover plate 3.

[0045] Specifically, as Figures 1-4 shown, in combination with Figure 6 shown, the housing 1 is a single-piece and includes a housing body 15 and a first partition 16. The housing body 15 has a cavity, and the cavity includes a plurality of first cavities 11 arranged at intervals in a first direction. A first partition 16 is provided between adjacent two first cavities 11. At least one end of each of the two ends of the first cavity 11 in a second direction is open to form a first opening, and the first direction and the second direction are perpendicular.

[0046] It can be understood that the first partition plate 16 is arranged in the cavity. The first partition plates 16 are multiple and arranged at intervals along the first direction. The first partition plates 16 divide at least part of the space in the cavity into multiple first cavities 11 spaced apart along the first direction. Both ends of the first cavity 11 along the second direction can be open, that is, the first cavity 11 has two first openings, or one end of the two ends of the first cavity 11 along the second direction is open, and the first cavity 11 has one first opening.

[0047] There are multiple electrode cores 2, and the multiple electrode cores 2 are respectively arranged in the multiple first cavities 11. A cover plate 3 is connected to the first opening of each first cavity 11 to block the opening of the first cavity 11. Among them, the cover plate 3 and the housing 1 can be connected by welding. Among them, when both ends of the first cavity 11 are open with first openings, cover plates 3 are connected to the first openings at both ends of the first cavity 11. When one end of the first cavity 11 along the second direction is open to form a first opening, a cover plate 3 is connected to one end of the first cavity 11 along the second direction.

[0048] In this application, the multiple electrode cores 2 are arranged in the multiple first cavities 11 in the integrated housing 1, and the cover plates 3 are used for blocking, so that the housing 1, the multiple electrode cores 2 and the cover plates 3 jointly define multiple battery cells. And the integrally arranged housing 1 can also function as a tray and position each battery cell, and the tray for supporting the multiple battery cells and the positioning member for positioning the multiple battery cells can be omitted.

[0049] Therefore, in this application, the housing 1 of the multiple battery cells is an integral part, which can reduce the number of components, reduce costs, and at the same time reduce the weight of the battery pack 100, thereby reducing the weight of the vehicle using the battery pack 100, which is beneficial to improving the energy utilization efficiency, reducing energy consumption, and increasing the cruising range. In addition, the volume of the battery pack 100 can be reduced, the space of the vehicle occupied by the battery pack 100 can be reduced, the interior space layout of the vehicle can be optimized, the passenger compartment of the vehicle can be made more spacious, and the riding comfort can be improved. At the same time, the structure and layout of the battery pack 100 can be optimized, and the volume energy density of the battery can be increased, thereby increasing the cruising range of the new energy vehicle to a certain extent.

[0050] In the preparation process of the battery pack 100, the electrode core 2 can be prepared through processes such as positive / negative electrode homogenization, coating, rolling, slitting, die-cutting, winding / laminating, etc. The prepared electrode core 2 is placed in the first cavity 11 in the integrated housing 1, and the cover plate 3 is welded, and then processes such as baking, liquid injection, restraint / infiltration, formation, and grading are carried out to prepare the battery cell, and the multiple battery cells are connected, such as in parallel or in series.

[0051] The battery pack 100 according to the embodiments of the present utility model includes a housing 1 provided integrally, and the cavity in the housing 1 includes a plurality of first cavities 11 spaced along a first direction. Adjacent two first cavities 11 are spaced by a first partition. A plurality of electrode cores 2 are respectively placed in the plurality of first cavities 11, and the open ends of the first cavities 11 are sealed by connecting a cover plate 3 to the housing 1, thereby forming a plurality of battery cells. This can reduce the number of components, lower costs, and at the same time reduce the weight of the battery pack 100, thereby reducing the weight of the vehicle using the battery pack 100, which is beneficial to improving energy utilization efficiency, reducing energy consumption, and increasing the cruising range. In addition, the volume of the battery pack 100 can be reduced, the space occupied by the battery pack 100 in the vehicle can be reduced, the layout of the vehicle interior space can be optimized, making the vehicle occupant compartment more spacious and improving the riding comfort. At the same time, the structure and layout of the battery pack 100 can be optimized, and the battery energy density can be increased, thereby further increasing the cruising range of the new energy vehicle to a certain extent.

[0052] In some embodiments of the present utility model, as Figure 5 and Figure 6 shown, a gap cavity 12 is provided in the first partition 16. It can be understood that along the first direction, a gap cavity 12 is provided between any adjacent two first cavities 11. As the usage time of the battery cell extends and during the charging and discharging process of the battery cell, etc., the size of the battery cell in the first direction will increase. The setting of the gap cavity 12 can provide a certain space for the expansion of the battery cell in the first direction, avoiding accidents such as explosion of the battery cell due to its inability to deform in the first direction, thereby ensuring the reliability of the battery cell operation and thus ensuring the reliability of the entire battery pack 100 operation.

[0053] Furthermore, as Figure 5 and Figure 6 shown, along the first direction, the size of the gap cavity 12 is smaller than the size of the first cavity 11. Thus, not only can it ensure that a certain deformation space can be provided for the deformation of the battery cell in the first direction, ensuring the normal operation of the battery cell, thereby ensuring the reliability and safety of the battery cell and further ensuring the reliability and safety of the battery pack 100, but also it can reduce the length of the battery pack 100 in the first direction, reduce the volume of the battery pack 100, reduce the space occupied by the battery pack 100 in the vehicle, optimize the layout of the vehicle interior space, make the vehicle occupant compartment more spacious, and improve the riding comfort.

[0054] In some embodiments of the present utility model, along the second direction, the size of the gap cavity 12 is the same as the size of the first cavity 11, and the two ends of the gap cavity 12 along the second direction are flush with the two ends of the first cavity 11 along the second direction. Thus, along the second direction, the gap cavity 12 can provide a deformation space for the deformation of the battery cell, ensuring the normal operation of the battery cell, thereby ensuring the reliability and safety of the battery cell and further ensuring the reliability and safety of the battery pack 100.

[0055] In some embodiments of the present utility model, the size of the gap cavity 12 is the same as that of the first cavity 11, and the first direction, the second direction, and the third direction are perpendicular to each other in pairs. Thus, along the third direction, the gap cavity 12 can provide a deformation space for the deformation of the battery cell, ensuring the normal operation of the battery cell, thereby ensuring the reliability and safety of the battery cell, and further ensuring the reliability and safety of the battery pack 100.

[0056] In some embodiments of the present utility model, as Figure 7 shown, the cavity further includes a second cavity 13. One end of the first partition 16 in the second direction is retracted inside the housing body 15 and forms a second cavity with the housing body 15. The second cavity 13 extends in the first direction. The second cavity 13 is located at one end of the housing 1 in the second direction and on one side of the plurality of first cavities 11 in the second direction. The battery pack 100 further includes a battery management system 4, and the battery management system 4 is disposed in the second cavity 13. The battery management system 4 is disposed in the second cavity 13 inside the housing 1, so that the electrode core 2 and the battery management system 4 can be disposed in the integrated housing 1 at the same time. The housing 1 can be used as the lower shell of the entire battery pack 100, which can further reduce the number of components, reduce costs, and at the same time reduce the weight of the battery pack 100, thereby reducing the weight of the vehicle applying the battery pack 100, which is beneficial to improving energy utilization efficiency, reducing energy consumption, and increasing the cruising range. In addition, the volume of the battery pack 100 can be reduced, the space occupied by the battery pack 100 in the vehicle can be reduced, the layout of the vehicle interior space can be optimized, the vehicle occupant compartment can be made more spacious, and the riding comfort can be improved. At the same time, the structure and layout of the battery pack 100 can be optimized, and the battery energy density can be increased, thereby increasing the cruising range of the new energy vehicle to a certain extent.

[0057] Among them, the battery management system 4 is mainly for intelligently managing and maintaining each battery cell unit and monitoring the state of the battery cell to extend the service life of the battery cell.

[0058] In some embodiments of the present utility model, as Figure 6 and Figure 7 shown, the cavity further includes a third cavity 14. The third cavity 14 is located on one side of the plurality of first cavities 11 in the third direction. The housing 1 further includes a second partition 17. A second partition 17 is provided between the third cavity 14 and the plurality of first cavities 11 to be spaced apart from the first cavities 11. One end of the plurality of first partitions 16 in the third direction is connected to the second partition 17. The first direction, the second direction, and the third direction are perpendicular to each other in pairs. It can be understood that the second partition 17 is disposed in the cavity, and the second partition 17 is used to divide the cavity in the third direction. One side is the third cavity 14, and the other side is divided into a plurality of first cavities 11 by the plurality of first partitions 16.

[0059] The battery pack 100 further includes a heating and / or cooling component 5, and the heating and / or cooling component 5 is disposed in the third cavity 14. Thus, the heating and / or cooling component 5 can be integrated into the housing 1 at the same time. The housing 1 can be used as the lower shell and the upper cover of the battery pack 100, which can reduce the separate setting of the upper cover, further reduce the number of components, reduce the cost, and at the same time reduce the weight of the battery pack 100, thereby reducing the weight of the vehicle using the battery pack 100, which is beneficial to improving the energy utilization efficiency, reducing the energy consumption, and increasing the cruising range. In addition, the volume of the battery pack 100 can be reduced, the space of the vehicle occupied by the battery pack 100 can be reduced, the interior space layout of the vehicle can be optimized, the passenger compartment of the vehicle can be made more spacious, and the riding comfort can be improved. At the same time, the structure and layout of the battery pack 100 can be optimized, the battery energy density can be increased, and thus the cruising range of the new energy vehicle can be increased to a certain extent.

[0060] Among them, the heating and / or cooling component 5 can include a heating component or only a cooling component. The heating component can be a heating film, and the cooling component can be a cold plate. The heating film is composed of a resistance wire, an insulating coating layer, and a lead wire, and is generally placed directly above the battery cell module. After the resistance wire is energized, it generates heat to achieve the function of heating the battery cells. The cold plate refrigeration is divided into two methods: liquid cooling refrigeration and direct refrigerant cooling. It is generally placed directly above the cell module. Liquid cooling transfers the temperature of the coolant to the battery cells through a metal plate. Direct refrigerant cooling is a way to absorb heat when the refrigerant changes from a liquid state to a gaseous state, and then realizes the function of cooling and lowering the temperature of the battery cells.

[0061] When the heating and / or cooling component 5 only includes a heating component or a cooling component, the heating component and the cooling component are separately placed in the third cavity. When the heating and / or cooling component 5 includes both a heating component and a cooling component, and the heating component and the cooling component are separate parts, the heating component is a heating film, and the cooling component is a cold plate. The heating film and the cold plate are stacked in the third direction and the heating film is close to the first cavity 11; when the heating component and the cooling component are an integral part, the heating component and the cooling component can be a cold plate, and a medium with a lower temperature can be introduced into the cold plate for cooling, or a medium with a higher temperature can be introduced for heating. The medium can be a refrigerant or water.

[0062] In some embodiments of the present invention, as Figure 8 shown, at least one side of the two sides of the cavity along the second direction is open to form a second opening, and the battery pack 100 further includes a sealing cover 6. The sealing cover 6 is provided at the second opening for sealing the second opening. Among them, the sealing cover 6 and the housing 1 can be welded together. Thus, through the connection between the housing 1 and the sealing cover 6, a closed and sealed environment can be formed inside the housing 1 to prevent the entry of water and dust, ensure that the battery pack 100 has excellent sealing performance, ensure the normal operation of the battery pack 100, and ensure the reliability of the operation of the battery pack 100.

[0063] In the present application, the preparation process of the battery pack 100 is as follows: according to requirements, an integrated housing 1 is prepared, and different spaces such as a first cavity 11 for placing battery cells, a second cavity 13 for placing the battery management system 4, and a third cavity 14 for placing the heating and cooling assembly 5 are reserved inside the housing 1 according to the requirements of the battery pack 100; the prepared electrode core 2 is placed in the first cavity 11 of the integrated battery housing 1, and the cover plate 3 is welded by laser, and then processes such as baking, liquid injection, restraint / infiltration, formation, and grading are carried out to prepare the battery cells. At the same time, the tab 22 of the electrode core 2 is laser welded to the terminal 31 on the cover plate 3; then, processes such as detection of the battery pack 100 are carried out, for example, self-discharge of the battery, detection of processes such as ACIR / DCIR. When a problem occurs in a single battery cell or repair is required due to an abnormality in a single battery cell in the battery pack 100, single replacement and repair can be achieved; the battery cells are connected in series and parallel, and the battery management system 4 is placed in the second cavity 13, and the heating and cooling assembly 5 is placed in the third cavity 14 of the integrated battery housing 1; finally, the battery pack 100 is sealed by the sealing cover 6, thereby realizing the preparation of the integrated power battery pack 100.

[0064] In the present application, the housing 1 of the battery cell, the tray of the battery pack 100, and the upper cover of the battery pack 100 are integrated, and when applied to a vehicle, they can also be integrated into the chassis and floor of the vehicle to prepare an integrated housing 1, reducing the number of components, improving the integration of the battery pack 100, reducing the complexity of the system, making the battery system more efficient, simplifying the system structure, reducing the failure rate of the battery pack 100, and improving the overall performance of the vehicle. In addition, the number of components is small, the common use and integration of components are high, reducing the production process of the battery pack 100 and lowering the production and manufacturing costs of the battery pack 100.

[0065] In some embodiments of the present utility model, as Figure 9 shown, the cover plate 3 is provided with a terminal 31, and the tab 22 of the electrode core 2 is connected to the terminal 31 through a metal connecting member 21. This facilitates the connection between the tab 22 on the electrode core 2 and the terminal 31, and improves the reliability of the connection between the tab 22 of the electrode core 2 and the terminal 31. Among them, the positive tab and the negative tab of the battery cell can be led out in the same direction or at opposite ends, and the positive terminal and the negative terminal of the battery cell can be arranged on the same cover plate 3 and spaced apart in the length direction of the cover plate 3.

[0066] As Figure 10 shown, the cover plate 3 can also be provided with a liquid injection hole and an explosion-proof valve. The liquid injection hole is provided to facilitate liquid injection into the first cavity 11 through the liquid injection hole, and the explosion-proof valve can be opened when a thermal runaway occurs in the battery cell to avoid safety accidents such as explosion.

[0067] AsFigure 11 As shown, the pole columns 31 of multiple battery cells are provided on the same side of the battery cells along the second direction, which facilitates the connection between the multiple battery cells. Further, the battery management system 4 is provided on the side of the battery cells where the pole columns 31 are provided, which facilitates the connection between the multiple battery cells and the battery management system 4.

[0068] The vehicle according to an embodiment of the present invention will be described below.

[0069] The vehicle according to an embodiment of the present invention includes a vehicle body and the above-mentioned battery pack 100. The battery pack 100 is provided on the vehicle body and at the bottom of the vehicle body, which can reasonably utilize the space under the vehicle body, ensure the space of the passenger compartment, and facilitate the battery pack 100 to supply power to other components on the vehicle body.

[0070] In the vehicle according to an embodiment of the present invention, by providing the above-mentioned battery pack 100, providing an integrated housing 1, and making the cavity in the housing 1 include a plurality of first cavities 11 spaced apart along the first direction, putting the multiple electrode cores 2 into the plurality of first cavities 11 respectively, and connecting the cover plate 3 to the housing 1 to seal the open mouths of the first cavities 11, a plurality of battery cells are formed. And the number of components can be reduced, the cost can be lowered, and at the same time, the weight of the battery pack 100 can be reduced, thereby reducing the weight of the vehicle applying the battery pack 100, which is beneficial to improving the energy utilization efficiency, reducing energy consumption, and increasing the cruising range. In addition, the volume of the battery pack 100 can be reduced, the space occupied by the battery pack 100 in the vehicle can be reduced, the layout of the interior space of the vehicle can be optimized, the passenger compartment of the vehicle can be made more spacious, and the riding comfort can be improved. At the same time, the structure and layout of the battery pack 100 can be optimized, and the battery energy density can be increased, thereby further increasing the cruising range of the new energy vehicle to a certain extent.

[0071] In some embodiments of the present invention, the vehicle body includes a chassis and a floor. The floor is located above the chassis. The housing 1 is configured to be a part of the frame of the chassis and a part of the floor. The upper region of the housing 1 can be used as the floor, and the lower region of the housing 1 can be used as the chassis of the vehicle, which can save the space of the vehicle, optimize the layout of the interior space of the vehicle, make the passenger compartment of the vehicle more spacious, and improve the riding comfort. In addition, arranging the battery pack 100 on the vehicle chassis can avoid damage to the battery pack 100 due to accidents, and has a safety protection effect on the battery pack 100. Secondly, the battery pack 100 is installed on the chassis, which can balance the front and rear weights of the vehicle and lower the center of gravity, improving the maneuverability of the vehicle.

[0072] In some embodiments of the present utility model, the housing 1 and the remaining part of the chassis frame excluding the housing 1 are integrally formed. Thereby, the reliability of the connection between the housing 1 and the remaining part of the chassis frame excluding the housing 1 can be increased, the number of components can be further reduced, the cost can be lowered, and at the same time, the weight of the battery pack 100 can be reduced, so as to reduce the weight of the vehicle applying the battery pack 100, which is beneficial to improving the energy utilization efficiency, reducing energy consumption, and increasing the cruising range. In addition, the volume of the battery pack 100 can be reduced, the space occupied by the battery pack 100 in the vehicle can be decreased, the layout of the vehicle interior space can be optimized, making the vehicle occupant compartment more spacious and enhancing the riding comfort. At the same time, the structure and layout of the battery pack 100 can be optimized to increase the battery energy density, thereby further increasing the cruising range of the new energy vehicle to a certain extent. Among them, the housing 1 and the floor are separately formed parts.

[0073] In some embodiments of the present utility model, the remaining part of the housing 1 and the chassis frame excluding the housing 1 and the remaining part of the floor excluding the housing 1 are both separately formed parts. Thereby, the structures and processing techniques of the housing 1, the remaining part of the chassis frame, and the remaining part of the floor can be simplified, and the production efficiency can be improved. Among them, the housing 1 and the chassis can be connected by welding and / or by fasteners and other means during the later assembly process, and the housing 1 and the floor can be connected by welding and / or by fasteners and other means during the later assembly process.

[0074] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0075] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirits of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized in that, Comprising: A housing (1), the housing (1) being an integral part and including a housing body (15) and a first partition (16). There is a cavity inside the housing body (15), the cavity including a plurality of first cavities (11) spaced along a first direction. A first partition (16) is provided between two adjacent first cavities. At least one end of each of the two ends of the first cavity (11) along a second direction is open to form a first opening. The first direction and the second direction are perpendicular; A pole core (2), there being a plurality of pole cores (2), and the plurality of pole cores (2) are respectively disposed in the plurality of first cavities (11); A cover plate (3), and a cover plate (3) is connected at each first opening for sealing the first opening.

2. The battery pack according to claim 1, wherein, A gap cavity (12) is provided inside the first partition (16).

3. The battery pack according to claim 2, wherein Along the first direction, the size of the gap cavity (12) is smaller than the size of the first cavity (11); And / or, along the second direction, the size of the gap cavity (12) is the same as the size of the first cavity (11); And / or, along a third direction, the size of the gap cavity (12) is the same as the size of the first cavity (11), and the first direction, the second direction and the third direction are perpendicular to each other in pairs.

4. The battery pack according to claim 1, characterized in that The cavity further includes a second cavity (13). One end of the first partition (16) along the second direction is retracted inside the housing body (15) and forms the second cavity with the housing body (15). The second cavity (13) extends along the first direction and is located on one side of the plurality of first cavities (11) along the second direction. The battery pack (100) further includes: A battery management system (4), and the battery management system (4) is disposed in the second cavity (13).

5. The battery pack according to claim 1, wherein The cavity further includes a third cavity (14). The third cavity (14) is located on one side of the plurality of first cavities (11) along the third direction. The housing (1) further includes a second partition (17). A second partition (17) is provided between the third cavity and the plurality of first cavities (11). One end of the plurality of first partitions (16) along the third direction is connected to the second partition (17). The first direction, the second direction and the third direction are perpendicular to each other in pairs. The battery pack (100) further includes: A heating and / or cooling component (5), and the heating and / or cooling component (5) is disposed in the third cavity (14).

6. The battery pack according to claim 1, characterized in that, At least one side of the two sides of the cavity along the second direction is open to form a second opening. The battery pack (100) further includes: A sealing cover (6), and the sealing cover (6) is provided at the second opening for sealing the second opening.

7. The battery pack according to claim 1, wherein, A pole post (31) is provided on the cover plate (3), and the tab (22) of the pole core (2) is connected to the pole post (31) through a metal connector (21).

8. The battery pack according to claim 1, characterized in that, The housing (1), the plurality of pole cores (2) and the plurality of cover plates (3) together form a plurality of battery cells, and the plurality of battery cells are connected in parallel or in series.

9. A vehicle, characterized in that, Comprising: A vehicle body; The battery pack (100) according to any one of claims 1-8, wherein the battery pack (100) is provided at the bottom of the vehicle body.

10. The vehicle according to claim 9, characterized in that, The vehicle body includes a chassis and a floor, the floor is located above the chassis, and the housing (1) is configured to be part of the frame of the chassis and part of the floor.

11. The vehicle according to claim 10, characterized in that, The housing (1) and the remaining part of the frame of the chassis are integrally formed.

12. The vehicle according to claim 10, characterized in that, The housing (1) and the remaining parts of the frame of the chassis and the remaining part of the floor are all separately formed.

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