Battery pack for vehicle and vehicle

Abstract

The utility model discloses a battery pack for the vehicle and the vehicle, the battery pack for the vehicle comprises a shell and a battery module, an accommodating cavity is formed in the shell, the battery module comprises at least one layer of battery assembly, and the at least one layer of battery assembly is arranged in the accommodating cavity and comprises a plurality of battery monomers arranged along a first direction; the single batteries extend in the second direction, and the second direction intersects with the first direction and is parallel to the driving direction of the vehicle. According to the battery pack for the vehicle provided by the embodiment of the utility model, the extension direction of the battery monomers is parallel to the driving direction of the vehicle, so that a large number of battery monomers can be prevented from being arranged in the driving direction of the vehicle, and in the driving process of the vehicle, when an object scratches the chassis of the vehicle and damages the battery monomers, the battery monomers can be prevented from being damaged. The damage to a large number of battery cells caused by vehicle driving can be avoided to a certain extent, the maintenance cost of the battery pack is reduced, and the use safety of the battery pack is improved.

Description

Technical Field

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

[0002] In the prior art, in order to improve the energy density of the battery pack, multiple battery cells are usually arranged in the battery pack. However, during the driving of the vehicle, if the vehicle encounters a bottom-cutting condition, there is usually a risk that multiple battery cells are cut simultaneously, reducing the safety of using the battery pack. 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 for a vehicle, which can, to a certain extent, solve the problem that multiple battery cells are cut simultaneously when the vehicle encounters a bottom-cutting condition, and improve the safety of using the battery pack.

[0004] The utility model also aims to provide a vehicle with the above battery pack.

[0005] The battery pack for a vehicle according to an embodiment of the utility model includes: a housing, in which a receiving cavity is formed; a battery module, the battery module includes at least one layer of battery components, the at least one layer of battery components is arranged in the receiving cavity and includes multiple battery cells arranged along a first direction, the battery cells extend along a second direction, the second direction intersects with the first direction and the second direction is parallel to the driving direction of the vehicle.

[0006] By arranging the battery cells to extend along the second direction in the battery pack according to an embodiment of the utility model, the extension length of the battery cells can be made parallel to the driving direction of the vehicle. In this way, while ensuring that multiple battery cells can be arranged in the battery pack at the same time, it can also, to a certain extent, avoid arranging a large number of battery cells in the driving direction of the vehicle. Therefore, during the driving of the vehicle, when an object rubs against the vehicle chassis and damages the battery cells, it can, to a certain extent, avoid the object from damaging a large number of battery cells due to the driving of the vehicle, reduce the maintenance cost of the battery pack and improve the safety of using the battery pack.

[0007] In some embodiments, the battery components have multiple layers, and the multiple layers of battery components are arranged along a third direction and form an electrical connection, the third direction intersects with the first direction and the second direction.

[0008] In some embodiments, each layer of the battery components includes at least two groups of battery cell groups arranged along the second direction, each group of battery cell groups includes multiple battery cells arranged along the first direction, and adjacent two groups of battery cell groups are electrically connected.

[0009] In some embodiments, the battery pack further includes a power distribution component. The battery module has a first output electrode and a second output electrode, and the polarities of the first output electrode and the second output electrode are different. The power distribution component is disposed in the accommodation cavity and is electrically connected to the first output electrode and the second output electrode respectively.

[0010] In some embodiments, an electrical connection component is provided in the power distribution component, and adjacent two layers of the battery components are electrically connected through the electrical connection component.

[0011] In some embodiments, the first output electrode and the second output electrode are respectively located on different layers of the battery components.

[0012] In some embodiments, the first output electrode and the second output electrode are arranged in a staggered manner in the second direction and the third direction.

[0013] In some embodiments, the power distribution component is disposed on one side of the battery module in the first direction.

[0014] In some embodiments, plug connectors are respectively provided at two ends of the housing in the second direction. The power distribution component is provided with a plurality of electrical connection ends arranged along the second direction, and each electrical connection end is electrically connected to the plug connector on the same side. The plug connector is adapted to be externally connected to a connector.

[0015] In some embodiments, a partition beam is provided in the housing. The partition beam divides the accommodation cavity into a first accommodation cavity for accommodating the battery components and a second accommodation cavity for accommodating the power distribution component. The first accommodation cavity and the second accommodation cavity are spaced apart in the first direction.

[0016] In some embodiments, a pressure relief structure communicating with the first accommodation cavity is provided on the side wall of the first accommodation cavity away from the second accommodation cavity.

[0017] In some embodiments, the battery pack further includes a heat exchange component, and at least a part of the heat exchange component is disposed between adjacent two layers of the battery components.

[0018] In some embodiments, the heat exchange component includes a heat exchange element and a conveying element. The heat exchange element is disposed between adjacent two layers of the battery groups, and the conveying element is communicated with the heat exchange element for conveying a heat exchange medium to the heat exchange element.

[0019] In some embodiments, the conveying element and the power distribution component are respectively located on different sides of the battery module.

[0020] In some embodiments, the conveying element and the power distribution component are respectively on two sides of the battery module in the first direction.

[0021] A vehicle according to an embodiment of the present utility model includes the aforementioned battery pack.

[0022] By adopting the aforementioned battery pack, the vehicle according to an embodiment of the present utility model can improve the use safety of the vehicle and reduce the use cost of the vehicle.

[0023] The additional aspects and advantages of the present utility model will become apparent in the following description or be learned through the practice of the present utility model. Description of the Drawings

[0024] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0025] Figure 1 It is a schematic diagram of a partial structure of a battery pack according to some embodiments of the present utility model.

[0026] Figure 2 It is an exploded view of a partial structure of a battery pack according to some embodiments of the present utility model.

[0027] Figure 3 It is a top view of a partial structure of a battery pack according to some embodiments of the present utility model.

[0028] Figure 4 It is a top view of the first layer of battery components assembled to the housing according to some embodiments of the present utility model.

[0029] Figure 5 It is a top view of the second layer of battery components assembled to the housing according to some embodiments of the present utility model.

[0030] Reference Signs:

[0031] 1000, battery pack;

[0032] 100, battery module;

[0033] 110, first output member; 120, second output member;

[0034] 130, battery component;

[0035] 131, battery cell group; 1311, battery cell;

[0036] 132, first layer of battery components;

[0037] 133, second layer of battery components;

[0038] 134, third output member;

[0039] 200, power distribution member;

[0040] 300. Outer shell;

[0041] 330. Accommodating cavity; 310. First accommodating cavity; 320. Second accommodating cavity;

[0042] 360. Connector;

[0043] 400. Partition beam;

[0044] 500. Partition board;

[0045] 600. Heat exchange assembly; 610. Heat exchange element; 620. Conveyor. Detailed implementation manners

[0046] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein 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 with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0047] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0048] The battery pack 1000 for a vehicle according to the embodiment of the present utility model will be described below with reference to the drawings of the specification.

[0049] Combined with Figure 1 and Figure 2 As shown, the battery pack 1000 for a vehicle according to the embodiment of the present utility model includes: an outer shell 300 and a battery module 100.

[0050] Among them, as Figure 1 shown, an accommodating cavity 330 is formed inside the outer shell 300.

[0051] Combined with Figure 1 and Figure 2As shown, the battery module 100 includes at least one layer of battery components 130. At least one layer of battery components 130 is disposed in the accommodation cavity 330 and includes a plurality of battery cells 1311 arranged in a first direction. The battery cells 1311 extend in a second direction, the second direction intersects with the first direction and the second direction is parallel to the driving direction of the vehicle. Herein, the first direction mentioned here can be understood as Figure 1 and Figure 2 the left - right direction shown in Figure 1 and Figure 2 the front - back direction shown in. The front - back direction is parallel to the driving direction of the vehicle.

[0052] That is to say, the battery component 130 includes a plurality of battery cells 1311. The plurality of battery cells 1311 are arranged in the left - right direction of the battery pack 1000, and each battery cell 1311 extends in the front - back direction of the battery pack 1000, so that the extension length of the battery cell 1311 is parallel to the driving direction of the vehicle. In this way, while ensuring that a plurality of battery cells 1311 can be arranged in the battery pack 1000 at the same time, it can also avoid arranging a large number of battery cells 1311 in the driving direction of the vehicle to a certain extent. Therefore, during the driving of the vehicle, when an object scrapes the vehicle chassis and damages the battery cells 1311, it can avoid the object from damaging a large number of battery cells 1311 due to the driving of the vehicle to a certain extent, reduce the maintenance cost of the battery pack 1000 and improve the use safety of the battery pack 1000.

[0053] At the same time, by setting the battery cells 1311 to extend in the second direction, while ensuring that the battery cells 1311 have a certain extension length, it can also avoid the stress problem of the torsional working condition being transmitted to the battery cells 1311 to a certain extent, extend the service life of the battery cells 1311, and improve the use safety of the battery cells 1311.

[0054] In addition, by setting the battery component 130 to include a plurality of battery cells 1311, it can also make the battery module 100 have a larger number of battery cells 1311, which is convenient for improving the capacity of the battery module 100 and ensuring the working performance of the battery module 100, that is, ensuring the working performance of the battery pack 1000.

[0055] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0056] It should be noted that by disposing at least one layer of battery components 130 in the accommodation cavity 330, while integrating the structure of the battery pack 1000 to reduce the volume of the battery pack 1000, it is also possible to protect and support the battery components 130 using the housing 300, so as to extend the service life of the battery module 100, ensure the use safety of the battery module 100 to a certain extent, and at the same time make the structure of the battery module 100 stable and ensure the working performance of the battery module 100.

[0057] As can be seen from the above structure, for the battery pack 1000 for a vehicle according to the embodiment of the present invention, by providing a plurality of battery cells 1311, the capacity of the battery pack 1000 is increased to ensure the working performance of the battery pack 1000.

[0058] At the same time, by arranging the battery cells 1311 to extend along the second direction, the extension length of the battery cells 1311 can be made parallel to the driving direction of the vehicle. In this way, while ensuring that a plurality of battery cells 1311 can be arranged in the battery pack 1000 at the same time, it is also possible to avoid arranging a large number of battery cells 1311 in the driving direction of the vehicle to a certain extent. Therefore, during the driving of the vehicle, when an object scratches the vehicle chassis and damages the battery cells 1311, it is possible to avoid the object from damaging a large number of battery cells 1311 due to the driving of the vehicle to a certain extent, reduce the maintenance cost of the battery pack 1000, and improve the use safety of the battery pack 1000.

[0059] It can be understood that compared with the prior art, the battery pack 1000 of the present application has a large capacity and high use safety by providing a plurality of battery cells 1311 and setting the extension direction of the battery cells 1311 to be parallel to the driving direction of the vehicle.

[0060] In some embodiments, the battery cells 1311 are provided with a first electrode and a second electrode in the second direction, and two adjacent battery cells 1311 are electrically connected through the first electrode or the second electrode. Thereby, an electrical connection is formed between two adjacent battery cells 1311 to ensure the working performance of the battery module 100 and reduce the difficulty of electrical connection between the battery cells 1311.

[0061] Among them, the first electrode and the second electrode mentioned here can be understood as the positive electrode and the negative electrode of the battery cell 1311. That is to say, one of the first electrode and the second electrode is formed as the positive electrode of the battery cell 1311, and the other is formed as the negative electrode of the battery cell 1311. The first electrode and the second electrode cooperate to achieve the electrical connection between the battery cells 1311.

[0062] Optionally, a plurality of battery cells 1311 of each layer of battery assembly 130 are electrically connected through a first electrical connector to facilitate the formation of the battery assembly 130 and ensure the capacity of the battery module 100.

[0063] Among them, the first electrical connector mentioned here can be a connecting copper bar or a bus bar, etc. In the battery module 100, the plurality of battery cells 1311 can be connected in series, in parallel, or in a mixed connection. A mixed connection means that there are both series and parallel connections among the plurality of battery cells 1311.

[0064] In some embodiments, the battery cell 1311 is a short blade battery. Compared with the long blade battery, the short blade battery has a higher voltage and less loss in the high-voltage platform.

[0065] That is to say, the battery module 100 of the present application includes multiple layers of short blade batteries.

[0066] Among them, the short blade battery mentioned here refers to a blade battery with a length in the range of 400 mm - 700 mm, and the long blade battery refers to a blade battery with a length in the range of 800 mm - 1000 mm.

[0067] In some embodiments, in combination with Figure 1 and Figure 2 as shown, the battery assembly 130 has multiple layers. The multiple layers of battery assemblies 130 are arranged along the third direction and form an electrical connection. The third direction intersects with the first direction and the second direction. Among them, the third direction mentioned here can be understood as the Figure 1 and Figure 2 up and down direction shown in. That is to say, there are multiple layers of battery assemblies 130 arranged in the up and down direction of the battery pack 1000 in the battery pack 1000, and an electrical connection is formed between the multiple layers of battery assemblies 130. The multiple layers of battery assemblies 130 cooperate to ensure the capacity of the battery pack 1000, thereby ensuring the working performance of the battery pack 1000.

[0068] In some embodiments, in combination with Figure 1 , Figure 2 and Figure 3 as shown, each layer of battery assembly 130 includes at least two groups of battery cell groups 131 arranged along the second direction. Each group of battery cell groups 131 includes a plurality of battery cells 1311 arranged along the first direction, and adjacent two groups of battery cell groups 131 are electrically connected. That is to say, the battery module 100 of the present application has multiple layers of battery assemblies 130. Each layer of battery assembly 130 has at least two groups of battery cell groups 131, and each group of battery cell groups 131 has a plurality of battery cells 1311, so that the battery module 100 has a plurality of battery cells 1311, maximizing the number of battery cells 1311 in the battery module 100 and realizing the improvement of the capacity of the battery module 100.

[0069] In some embodiments, multiple battery cells 1311 within each group of battery cell groups 131 form electrical connections by cooperating with the first electrode and the second electrode, thereby forming individual battery cell groups 131. After the battery cell groups 131 are formed, the battery cell groups 131 have a first lead electrode and a second lead electrode, and the first lead electrode and the second lead electrode are formed as the positive electrode and the negative electrode of the battery cell group 131. Adjacent two groups of battery cell groups 131 located on the same layer form electrical connections through the first lead electrode and the second lead electrode to form a battery assembly 130. After the battery assembly 130 is formed, the battery assembly 130 forms a connection electrode, and the connection electrode is formed as the lead electrode of the battery assembly 130. The battery assemblies 130 of adjacent layers are electrically connected through the connection electrodes to form a battery module 100.

[0070] Among them, the above-mentioned first lead electrode, second lead electrode, and connection electrode are all directly formed by the first electrode or the second electrode of the battery cell 1311, reducing the difficulty of electrical connection of the battery module 100.

[0071] In some embodiments, in combination Figure 1 , Figure 2 and Figure 3 as shown, the battery pack 1000 further includes a power distribution component 200. The battery module 100 has a first output electrode and a second output electrode, and the polarities of the first output electrode and the second output electrode are different. The power distribution component 200 is disposed in the accommodation cavity 330 and is electrically connected to the first output electrode and the second output electrode respectively. That is to say, when the first output electrode is the positive electrode, the second output electrode is the negative electrode, and when the first output electrode is the negative electrode, the second output electrode is the positive electrode. In this way, when the first output electrode and the second output electrode are electrically connected to the power distribution component 200 respectively, the electrical connection between the power distribution component 200 and the battery module 100 can be realized, so as to facilitate providing a stable power supply by using the power distribution component 200, and the power distribution by using the power distribution component 200 and ensuring the safety of the battery module 100 can be realized.

[0072] Therefore, the first output electrode and the second output electrode mentioned here can also be understood as the total positive electrode and the total negative electrode of the battery module 100.

[0073] At the same time, by disposing the power distribution component 200 in the accommodation cavity 330, while realizing the integration of the structure of the battery pack 1000 to reduce the volume of the battery pack 1000, it is also possible to protect and support the power distribution component 200 by using the housing 300, so as to extend the service life of the power distribution component 200, ensure the use safety of the power distribution component 200 to a certain extent, and at the same time make the structure of the power distribution component 200 stable and ensure the working performance of the power distribution component 200.

[0074] In some embodiments, the power distribution component 200 is a BDU (Battery Disconnect Unit), and the power distribution component 200 can coordinate the function conversion and energy distribution of high-voltage accessories such as the motor control system, battery management system, charging management system, DC / DC converter, electric air conditioner, electric power steering, and braking system that drive the electrical device, which helps to ensure the smooth operation and efficient cooperation among the various components of the electrical device, not only improving the safe and stable operation of the high-voltage circuit system of the electrical device, but also enhancing the performance and user experience of the electrical device.

[0075] In some embodiments, the first output electrode and the second output electrode are directly formed by the first electrode or the second electrode of the battery cell 1311, reducing the forming difficulty of the first output electrode and the second output electrode, and further reducing the electrical connection difficulty between the battery module 100 and the power distribution component 200.

[0076] In some embodiments, in combination Figure 2 、 Figure 4 and Figure 5 as shown, the battery module 100 includes a first output member 110 and a second output member 120. The first output member 110 connects the first output electrode and the power distribution component 200 to lead out the first output electrode and realize the electrical connection between the first output electrode and the power distribution component 200, reducing the electrical connection difficulty between the first output electrode and the power distribution component 200; the second output member 120 connects the second output electrode and the power distribution component 200 to lead out the second output electrode and realize the electrical connection between the second output electrode and the power distribution component 200, reducing the electrical connection difficulty between the first output electrode and the power distribution component 200, thereby reducing the electrical connection difficulty between the battery module 100 and the power distribution component 200.

[0077] Among them, the first output member 110 and the second output member 120 mentioned here can be connecting copper bars, busbars, etc.

[0078] In some embodiments, an electrical connection member (not shown in the figure) is provided inside the power distribution component 200, and adjacent two layers of battery components 130 are electrically connected through the electrical connection member. Here, it can also be understood that adjacent two layers of battery components 130 are electrically connected through the power distribution component 200. Since a protection switch, a relay, etc. are generally provided inside the box body of the power distribution component 200, the connection of adjacent two layers of battery components 130 can be controlled and protected by using the protection switch, the relay, etc., improving the use safety of the battery module 100.

[0079] Of course, in some other embodiments, adjacent two layers of battery components 130 can also be directly electrically connected outside the power distribution component 200 through a second electrical connection member, reducing the electrical connection difficulty between adjacent two layers of battery components 130.

[0080] Among them, the second electrical connection member mentioned here can be a connecting copper bar or a busbar, etc.

[0081] In some embodiments, each layer of the battery assembly 130 has connection electrodes that are electrically connected to the battery assemblies 130 of adjacent layers. By using the connection electrodes, electrical connections can be formed between the battery assemblies 130 of adjacent layers, reducing the difficulty of electrical connection, and thus facilitating the formation of the battery module 100.

[0082] In some embodiments, in combination Figure 2 , Figure 4 and Figure 5 as shown, the battery module 100 includes a plurality of third output members 134, and the plurality of third output members 134 are respectively connected to the connection electrodes of the battery assemblies 130 of each layer and the electrical connection members in the power distribution member 200, so that electrical connections can be formed between the battery assemblies 130 of adjacent layers, reducing the difficulty of electrical connection between the battery assemblies 130 of adjacent layers.

[0083] It should be noted that the battery assemblies 130 of adjacent layers can be connected in series or in parallel, and no specific limitation is made here.

[0084] In some embodiments, the first output electrode and the second output electrode are respectively located on the battery assemblies 130 of different layers. That is to say, when there are multiple layers of battery assemblies 130, one of the first output electrode and the second output electrode is located on one layer of the battery assemblies 130, and the other is located on another layer of the battery assemblies 130. Since the battery assemblies 130 of different layers are arranged in the third direction, the first output electrode and the second output electrode can be spaced apart in the third direction, so that there is a certain distance between the first output electrode and the second output electrode, facilitating the formation of the first output member 110 and the second output member 120 to be respectively located on the battery assemblies 130 of different layers (in combination Figure 2 , Figure 4 and Figure 5 as shown), thereby avoiding the arcing phenomenon between the first output member 110 and the second output member 120 and improving the use safety of the battery module 100.

[0085] In some embodiments, the first output electrode and the second output electrode are misaligned in the second direction and the third direction to maximize the distance between the first output electrode and the second output electrode, thereby avoiding the arcing phenomenon.

[0086] It should be noted that the misalignment setting in the second direction and the third direction mentioned here means that in the second direction and the third direction of the battery module 100, the first output electrode and the second output electrode are both spaced apart, which can maximize the distance between the first output electrode and the second output electrode, that is, maximize the distance between the first output member 110 and the second output member 120, avoid the occurrence of arcing between the first output member 110 and the second output member 120, and improve the use safety of the battery module 100.

[0087] In some embodiments, in combination with Figure 2 , Figure 4 and Figure 5 As shown, the multi-layer battery assembly 130 includes a first-layer battery assembly 132 and a second-layer battery assembly 133. The first-layer battery assembly 132 and the second-layer battery assembly 133 are respectively arranged at opposite ends of the battery module 100 in the third direction. In the second direction, one of the first electrode or the second electrode of a battery cell group 131 at one end of the first-layer battery assembly 132 forms a first output electrode, and one of the first electrode or the second electrode of a battery cell group 131 at the other end of the second-layer battery assembly 133 forms a second output electrode. In this way, the first output electrode and the second output electrode can be arranged to be spaced apart in the second direction and the third direction respectively, that is, the first output electrode and the second output electrode are arranged to be misaligned in the second direction and the third direction respectively, increasing the distance between the first output electrode and the second output electrode.

[0088] It should be noted that since the battery pack 1000 of the present application is provided with a plurality of battery cells 1311, especially when the battery cell 1311 is a short blade battery, there is an easy risk of insulation, which affects the safety of the battery pack 1000.

[0089] Based on this, the first output electrode and the second output electrode of the battery module 100 of the present application are arranged to be misaligned in the second direction and the third direction respectively, so that the first output electrode and the second output electrode can be arranged diagonally to maximize the distance between the first output electrode and the second output electrode, avoid the occurrence of arcing, and further improve the safety of the battery module 100.

[0090] In some embodiments, in combination with Figure 1 , Figure 2 and Figure 3 As shown, in the first direction, the first output electrode and the second output electrode are located on the same side of the battery module 100, which is convenient for the electrical connection between the first output member 110 and the second output member 120 and the power distribution member 200.

[0091] In some embodiments, in combination with Figure 1 , Figure 2 andFigure 3 As shown, the power distribution component 200 is disposed on one side of the battery module 100 in the first direction. That is to say, both the battery module 100 and the power distribution component 200 are disposed in the accommodation cavity 330, and the battery module 100 and the power distribution component 200 are oppositely disposed in the first direction of the accommodation cavity 330, which can make the battery module 100 close to the power distribution component 200, so as to facilitate the electrical connection between the battery module 100 and the power distribution component 200 and reduce the difficulty of electrical connection between the battery module 100 and the power distribution component 200.

[0092] In some embodiments, in combination with Figure 1 、 Figure 2 and Figure 3 As shown, plug connectors 360 are respectively disposed at both ends of the housing 300 in the second direction. The power distribution component 200 is provided with a plurality of electrical connection ends arranged in the second direction, and each electrical connection end is electrically connected to the plug connector 360 on the same side. The plug connector 360 is adapted to be externally connected to a connector. That is to say, a plurality of plug connectors 360 are provided on the housing 300, and the plurality of plug connectors 360 are spaced apart in the front-rear direction of the battery pack 1000. The power distribution component 200 is provided with a plurality of electrical connection ends, and the plurality of electrical connection ends are arranged in the front-rear direction of the battery pack 1000. In this way, the arrangement direction of the plurality of electrical connection ends can be the same as the arrangement direction of the plurality of plug connectors 360.

[0093] It should be noted that each electrical connection end being electrically connected to the plug connector 360 on the same side means that in the battery pack 1000, the second direction has a relatively disposed one side and the other side. When the electrical connection end on one side of the second direction needs to be electrically connected to the plug connector 360, the electrical connection end is electrically connected to the plug connector 360 on one side of the second direction. When the electrical connection end on the other side of the second direction needs to be electrically connected to the plug connector 360, the electrical connection end is electrically connected to the plug connector 360 on the other side of the second direction. In this way, each electrical connection end forms an electrical connection with the plug connector 360 on the same side. In this way, while realizing the electrical connection between the electrical connection end and the plug connector 360, the distance between the electrical connection end and the corresponding plug connector 360 can also be shortened, which is beneficial to shortening the length of the electrical connection member connecting the electrical connection end and the plug connector 360. While realizing the reduction of the difficulty of electrical connection between the electrical connection end and the plug connector 360, the structure of the electrical connection member can also be simplified, the use cost of the electrical connection member can be reduced, the weight of the electrical connection member can be reduced, so as to realize the simplification of the structure of the battery pack 1000, and the weight and manufacturing cost of the battery pack 1000 can be reduced.

[0094] At the same time, shortening the length of the electrical connection member connecting the electrical connection end and the plug connector 360 can also, to a certain extent, prevent the electrical connection member connecting the electrical connection end and the plug connector 360 from being electrically connected to other structural members (such as: the battery assembly 130), thereby improving the use safety of the battery pack 1000.

[0095] In addition, the plug-in connector 360 is externally connected to a connector, which can reduce the difficulty of electrical connection between the battery pack 1000 and an external power supply component or an external power-consuming component, so that the battery pack 1000 can effectively charge and discharge, thereby ensuring the working performance of the battery pack 1000.

[0096] In some embodiments, a plurality of electrical connection ends are respectively arranged on both sides of the power distribution component 200 in the second direction, so as to realize the arrangement of the plurality of electrical connection ends along the second direction.

[0097] Of course, in some other embodiments, a plurality of electrical connection ends can also be arranged on the same side of the power distribution component 200 but arranged in the second direction. In this way, the arrangement of the plurality of electrical connection ends along the second direction can also be realized. For example, a plurality of electrical connection ends are all arranged on one side of the power distribution component 200 in the first direction or the third direction, or, some electrical connection ends are arranged on one side of the power distribution component 200 in the first direction, and the other part of the electrical connection ends are arranged on one side of the power distribution component 200 in the third direction, but the plurality of electrical connection ends are arranged in the second direction. This is also beneficial to shortening the length of the electrical connection component connecting the electrical connection end and the plug-in connector 360.

[0098] In a specific example, in combination with Figure 1 、 Figure 2 and Figure 3 As shown, two plug-in connectors 360 are provided on the outer shell 300. The two plug-in connectors 360 are spaced apart in the second direction. One of the two plug-in connectors 360 is in the vehicle head direction, and the other is in the vehicle head direction. The plug-in connector 360 in the vehicle head direction is a discharge interface, and the plug-in connector 360 in the vehicle tail direction is a fast charge interface.

[0099] Of course, in some other embodiments, it is also possible that the plug-in connector 360 in the vehicle head direction is a fast charge interface, and the plug-in connector 360 in the vehicle tail direction is a discharge interface.

[0100] It should be noted that in the present application, the power distribution component 200 is arranged on one side of the battery module 100 in the first direction, and the plug-in connectors 360 are arranged at both ends of the outer shell 300 in the second direction. In this way, it can be avoided to a certain extent that the battery module 100 is formed between the power distribution component 200 and the plug-in connectors 360. While reducing the difficulty of electrical connection between the power distribution component 200 and the plug-in connectors 360, it can also be avoided to a certain extent that the electrical connection component connecting the electrical connection end and the plug-in connectors 360 forms an electrical connection with the battery module 100, thereby improving the use safety of the battery pack 1000.

[0101] That is to say, the connector 360 and the battery module 100 are electrically connected to the power distribution component 200 respectively, and the connector 360 and the battery module 100 are located on different sides of the power distribution component 200. While reducing the difficulty of electrically connecting the power distribution component 200 with the connector 360 and the battery module 100, it can also avoid to a certain extent the connector 360 and the battery module 100 from coming into contact to form an electrical connection, and avoid to a certain extent the electrical connection component connecting the electrical connection end and the connector 360 from coming into contact with the electrical connection component connecting the battery module 100 and the power distribution component 200 to form an electrical connection, thus improving the use safety of the battery pack 1000.

[0102] In some embodiments, as shown in Figure 2 and Figure 3 , a partition beam 400 is provided in the housing 300. The partition beam 400 divides the accommodation cavity 330 into a first accommodation cavity 310 for accommodating the battery assembly 130 and a second accommodation cavity 320 for accommodating the power distribution component 200. The first accommodation cavity 310 and the second accommodation cavity 320 are spaced apart in the first direction. This is to achieve arranging the power distribution component 200 on one side of the battery module 100 in the first direction, reducing the difficulty of electrically connecting the battery module 100 with the power distribution component 200. At the same time, it can also utilize the cooperation of the first accommodation cavity 310 and the second accommodation cavity 320 to avoid to a certain extent the electrical connection component of the power distribution component 200 and the connector 360 from forming an electrical connection with the battery module 100, thus improving the use safety of the battery pack 1000.

[0103] In addition, the partition beam 400 can be used to make the power distribution component 200 and the battery module 100 independent of each other, thereby achieving isolation between the power distribution component 200 and the battery module 100, avoiding to a certain extent the power distribution component 200 and the battery module 100 from directly contacting to form an electrical connection, and improving the use safety of the battery pack 1000.

[0104] At the same time, the partition beam 400 can also be used to limit the power distribution component 200 and the battery module 100, improving the position stability of the power distribution component 200 and the battery module 100 to ensure the working performance of the power distribution component 200 and the battery module 100.

[0105] In addition, the structural strength of the housing 300 can be supported and strengthened by the partition beam 400.

[0106] In some embodiments, the partition beam 400 is provided in the housing 300 and fixedly connected to the housing 300 to ensure the position stability of the partition beam 400, thereby ensuring the working performance of the partition beam 400.

[0107] In some embodiments, connectors 360 are provided on the side wall of the second accommodation cavity 320, which can make a plurality of connectors 360 face the power distribution component 200, facilitating the electrical connection between the power distribution component 200 and the connectors 360.

[0108] In some embodiments, a partition plate 500 is further provided inside the housing 300. The partition plate 500 is disposed between two adjacent groups of battery cells 131 on the same side, so that the two adjacent groups of battery cells 131 are independent of each other. While preventing the two adjacent groups of battery cells 131 from directly contacting each other, the position stability of the battery cells 131 can also be improved.

[0109] In some embodiments, the partition plate 500 is formed as a heat insulation plate. In this way, the partition plate 500 can be used to block the high-temperature and high-pressure gas discharged through the explosion-proof valve of the battery cell 1311, so as to avoid the high-temperature and high-pressure gas passing through the partition plate 500 and affecting the adjacent groups of battery cells 131 to a certain extent, thereby preventing the battery cells 1311 from spreading to each other when thermal runaway occurs and improving the use safety of the battery pack 1000.

[0110] That is to say, the battery pack 1000 of the present application can not only relieve pressure smoothly, but also avoid the mutual influence of adjacent groups of battery cells 131 when relieving pressure.

[0111] It should be noted that the explosion-proof valve is used to open when the internal pressure of the battery cell 1311 exceeds a preset value, so as to achieve the purpose of pressure relief and improve the use safety of the battery cell 1311. Among them, the explosion-proof valve is a well-known prior art to those skilled in the art, and the specific structure of the explosion-proof valve will not be described in detail here.

[0112] In a specific example, the partition plate 500 is made of mica plate. The mica plate has a relatively high melting point, which can make the partition plate 500 formed as a heat insulation plate. In this way, the heat discharged from the battery cell 1311 can be prevented from breaking through the partition plate 500, so as to avoid the mutual influence of two adjacent groups of battery cells 131 to a certain extent when relieving pressure and ensure the use safety of the battery pack 1000.

[0113] In some embodiments, a pressure relief structure communicating with the first accommodation cavity 310 is provided on the side wall of the first accommodation cavity 310 away from the second accommodation cavity 320. Among them, by providing the pressure relief structure, the accumulation of high-pressure gas in the first accommodation cavity 310 can be avoided from deteriorating and causing thermal runaway, so as to improve the use safety of the battery pack 1000.

[0114] At the same time, by arranging the pressure relief structure on the side wall of the first accommodation cavity 310 away from the second accommodation cavity 320, the pressure relief structure can be arranged away from the power distribution component 200. In this way, the high-temperature and high-pressure gas discharged through the pressure relief structure can be avoided from affecting the power distribution component 200 to a certain extent, the service life of the power distribution component 200 can be prolonged, and the use safety of the power distribution component 200 can be ensured.

[0115] In some embodiments, such as Figure 2As shown, the battery pack 1000 further includes a heat exchange component 600, and at least a part of the heat exchange component 600 is disposed between adjacent two layers of battery components 130. The purpose of using the heat exchange component 600 to adjust the temperature of the battery component 130 is achieved, that is, the purpose of adjusting the temperature of the battery cell 1311 is achieved, so that the temperature of the battery cell 1311 during operation can be maintained within a suitable temperature range, ensuring the use safety of the battery cell 1311 and also ensuring the working performance of the battery cell 1311.

[0116] In some embodiments, as Figure 2 shown, the heat exchange component 600 includes a heat exchange element 610 and a conveying element 620. The heat exchange element 610 is disposed between adjacent two layers of battery groups, and the conveying element 620 is communicated with the heat exchange element 610 for conveying a heat exchange medium to the heat exchange element 610. Thus, the temperature of the battery component 130 can be adjusted by using the heat exchange component 600 to ensure the use safety and working performance of the battery cell 1311.

[0117] In some embodiments, the heat exchange element 610 is formed as a heat exchange plate, and the heat exchange plate is communicated with the conveying element 620 so that the heat exchange medium can be filled in the heat exchange plate. The heat exchange medium is used for heat exchange with adjacent two layers of battery components 130, and further the purpose of adjusting the temperature of the battery cell 1311 by using the heat exchange component 600 is achieved.

[0118] Optionally, the conveying element 620 is a conveying pipe, and the conveying pipe is used for conveying the heat exchange medium toward the heat exchange element 610 to ensure the heat exchange effect of the heat exchange element 610.

[0119] Wherein, the heat exchange medium mentioned here can be a refrigerant.

[0120] In some embodiments, as Figure 2 shown, the conveying element 620 and the power distribution element 200 are respectively located on different sides of the battery module 100. So that the conveying element 620 is disposed away from the power distribution element 200, to a certain extent, avoiding the condensation problem caused by the temperature change of the refrigerant in the conveying element 620 to the power distribution element 200 and improving the safety of the power distribution element 200.

[0121] At the same time, by respectively locating the conveying element 620 and the power distribution element 200 on different sides of the battery module 100, the inlet and outlet sides of the conveying element 620 can also be placed on the side, reducing the complexity of the conveying element 620 and effectively increasing the utilization efficiency of the space inside the battery pack 1000.

[0122] In some embodiments, as Figure 2As shown, the conveying member 620 and the power distribution member 200 are respectively on both sides of the battery module 100 in the first direction. Thus, the conveying member 620 and the power distribution member 200 are respectively located on different sides of the battery module 100, so as to avoid the condensation problem caused by the temperature change of the refrigerant in the conveying member 620 to the power distribution member 200 to a certain extent, and improve the safety of the power distribution member 200.

[0123] Of course, in some other embodiments, the conveying member 620 and the power distribution member 200 may also be located on the same side of the battery module 100 but are spaced apart in the third direction, so as to realize that the conveying member 620 and the power distribution member 200 are arranged in the same area, effectively increasing the space utilization rate of the battery pack 1000.

[0124] In some embodiments, in combination with Figure 1 and Figure 2 As shown, the battery module 100 includes two layers of battery components 130, and the two layers of battery components 130 are stacked and arranged in the third direction. In the third direction, the battery cells 1311 in the battery component 130 located in the lower layer can be directly placed in the housing 300, and the battery cells 1311 in the battery component 130 located in the upper layer can be first assembled into multiple groups of battery cells 131, and then placed in the housing 300 by means of hoisting, increasing the assemblability to reduce the assembly difficulty of the battery pack 1000.

[0125] The vehicle according to the embodiment of the present invention will be described below.

[0126] A vehicle according to an embodiment of the present invention includes: a battery pack 1000.

[0127] Wherein, the battery pack 1000 is the aforementioned battery pack 1000, and the specific structure of the battery pack 1000 will not be elaborated here.

[0128] From the above structure, it can be seen that the vehicle according to the embodiment of the present invention can improve the use safety of the vehicle and reduce the use cost of the vehicle by adopting the aforementioned battery pack 1000.

[0129] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0130] Figure 2Two layers of the battery assembly 130 are shown for illustrative purposes, but those of ordinary skill in the art can clearly understand, after reading the above technical solution, that the solution can be applied to a technical solution of a three-layer or more-layer battery assembly 130, which also falls within the protection scope of the present utility model.

[0131] The battery pack 1000 for a vehicle according to an embodiment of the present utility model and other components of the vehicle are known to those of ordinary skill in the art and will not be described in detail herein.

[0132] In the description of this specification, the description with reference to terms such as "embodiment", "example", 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.

[0133] 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 spirit 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 for a vehicle, characterized in that: include: A housing, wherein a receiving cavity is formed in the housing; A battery module, wherein the battery module includes at least one layer of battery components, wherein the at least one layer of battery components is disposed in the accommodating cavity and includes a plurality of battery cells arranged along a first direction, wherein the battery cells extend along a second direction, wherein the second direction intersects with the first direction and is parallel to the driving direction of the vehicle.

2. The battery pack according to claim 1, characterized in that: The battery assembly has multiple layers, and the multiple layers of the battery assembly are arranged along a third direction and are electrically connected. The third direction intersects with the first direction and the second direction.

3. The battery pack according to claim 2, characterized in that: Each layer of the battery assembly includes at least two groups of battery monomer groups arranged along the second direction, each group of the battery monomer groups includes a plurality of the battery monomers arranged along the first direction, and two adjacent groups of the battery monomer groups are electrically connected.

4. The battery pack according to claim 2, characterized in that: It also includes a distribution component, the battery module has a first output electrode and a second output electrode, the first output electrode and the second output electrode have different polarities, and the distribution component is arranged in the accommodating cavity and is electrically connected to the first output electrode and the second output electrode respectively.

5. The battery pack according to claim 4, characterized in that: An electrical connector is provided in the power distribution component, and two adjacent layers of battery components are electrically connected via the electrical connector.

6. The battery pack according to claim 4, characterized in that: The first output electrode and the second output electrode are respectively located at different layers of the battery assembly.

7. The battery pack according to claim 4, characterized in that: The first output electrode and the second output electrode are staggered in the second direction and the third direction.

8. The battery pack according to claim 4, characterized in that: The power distribution component is arranged on one side of the battery module in the first direction.

9. The battery pack according to claim 4, characterized in that: The two ends of the housing in the second direction are respectively provided with connectors, the power distribution component is provided with a plurality of electrical connection ends arranged along the second direction, each of the electrical connection ends is electrically connected to the connector on the same side, and the connector is suitable for an external connector.

10. The battery pack according to claim 4, characterized in that: A partition beam is provided in the shell, and the partition beam divides the accommodating cavity into a first accommodating cavity for accommodating the battery assembly and a second accommodating cavity for accommodating the power distribution component. The first accommodating cavity and the second accommodating cavity are spaced apart in the first direction.

11. The battery pack according to claim 10, characterized in that: A pressure relief structure communicating with the first accommodating chamber is provided on a side wall of the first accommodating chamber away from the second accommodating chamber.

12. The battery pack according to any one of claims 4 to 11, characterized in that: It also includes a heat exchange component, at least part of which is arranged between two adjacent layers of battery components.

13. The battery pack according to claim 12, characterized in that: The heat exchange assembly includes a heat exchange element and a conveying element. The heat exchange element is arranged between two adjacent layers of the battery packs. The conveying element is connected to the heat exchange element to convey heat exchange medium to the heat exchange element.

14. The battery pack according to claim 13, characterized in that: The conveying component and the power distribution component are respectively located on different sides of the battery module.

15. The battery pack according to claim 14, characterized in that: The conveying component and the power distribution component are respectively located on two sides of the battery module in the first direction.

16. A vehicle, characterized in that: Comprising a battery pack according to any one of claims 1-15.

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