Battery pack for vehicle, and vehicle

Abstract

A battery pack for a vehicle, and a vehicle. The battery pack for a vehicle comprises a case and a battery module; an accommodating cavity is formed in the case; the battery module comprises at least one layer of battery assembly; the at least one layer of battery assembly is arranged in the accommodating cavity and comprises a plurality of battery cells arranged in a first direction; the battery cells extend in a second direction, the second direction intersects the first direction, and the second direction is parallel to a traveling direction of the vehicle. By configuring the extension direction of the battery cells to be parallel to the traveling direction of the vehicle, a large number of battery cells can be prevented from being arranged in the traveling direction of the vehicle. In this way, during traveling of the vehicle, when an object scrapes the chassis of the vehicle and causes damage to battery cells, the number of battery cells damaged by the object during traveling of the vehicle can be reduced to a certain extent, so that the maintenance cost of the battery pack is reduced, and the use safety of the battery pack is improved.

Description

Battery pack for vehicle and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] The present application claims priority to the Chinese patent application No. 202421741098.1 filed on July 22, 2024, and entitled "Battery pack for vehicle and vehicle", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of battery, in particular to a battery pack for vehicle and vehicle. BACKGROUND

[0004] In the prior art, in order to improve the energy density of the battery pack, a plurality of battery monomers are usually arranged in the battery pack. However, in the prior art, if the vehicle is in a bottom cutting condition, the plurality of battery monomers will be simultaneously cut, which reduces the use safety of the battery pack. SUMMARY

[0005] The present disclosure aims to at least solve one of the technical problems existing in the prior art. To this end, the present disclosure provides a battery pack for vehicle, which can solve the problem that a plurality of battery monomers are simultaneously cut when the vehicle is in a bottom cutting condition to some extent, and improve the use safety of the battery pack.

[0006] The present disclosure also aims to provide a vehicle with the above-mentioned battery pack.

[0007] The battery pack for vehicle according to the embodiments of the present disclosure comprises: an outer shell, wherein a containing cavity is formed in the outer shell; and a battery module, wherein the battery module comprises at least one layer of battery assembly, the at least one layer of battery assembly is arranged in the containing cavity and comprises a plurality of battery monomers arranged along a first direction, the battery monomers extend along a second direction, the second direction intersects the first direction and the second direction is parallel to the driving direction of the vehicle.

[0008] The battery pack for vehicle according to the embodiments of the present disclosure, by arranging the battery monomers to extend along the second direction, the extension length of the battery monomers is parallel to the driving direction of the vehicle, which can ensure that a plurality of battery monomers can be arranged in the battery pack, and at the same time, can avoid arranging a large number of battery monomers in the driving direction of the vehicle to some extent. Therefore, when an object scratches the vehicle chassis and causes damage to the battery monomers during the driving of the vehicle, the object can cause damage to a large number of battery monomers due to the driving of the vehicle to some extent, which reduces the maintenance cost of the battery pack and improves the use safety of the battery pack.

[0009] In some embodiments, the battery assembly has multiple layers, the multiple layers of the battery assembly are arranged along a third direction and form an electrical connection, the third direction intersects the first direction and the second direction.

[0010] In some embodiments, each layer of the battery assembly includes at least two groups of battery cell groups arranged along the second direction, each group of the battery cell groups includes a plurality of battery cells arranged along the first direction, and adjacent two groups of the battery cell groups are electrically connected.

[0011] In some embodiments, the battery pack further includes a power distribution member, 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 power distribution member is arranged in the accommodation cavity and is electrically connected to the first output electrode and the second output electrode, respectively.

[0012] In some embodiments, the power distribution member is provided with an electrical connection member, and adjacent two layers of the battery assembly are electrically connected through the electrical connection member.

[0013] In some embodiments, the first output electrode and the second output electrode are respectively located in different layers of the battery assembly.

[0014] In some embodiments, the first output electrode and the second output electrode are arranged in different positions in the second direction and the third direction.

[0015] In some embodiments, the power distribution member is arranged on one side of the battery module in the first direction.

[0016] In some embodiments, the housing is provided with a plug-in member at each end in the second direction, the power distribution member is provided with a plurality of electrical connection ends arranged in the second direction, each electrical connection end is electrically connected to the plug-in member on the same side, and the plug-in member is adapted to an external connector.

[0017] In some embodiments, the housing is provided with a partition beam, the partition beam divides the accommodation cavity into a first accommodation cavity for accommodating the battery assembly and a second accommodation cavity for accommodating the power distribution member, and the first accommodation cavity and the second accommodation cavity are arranged apart in the first direction.

[0018] In some embodiments, the first accommodation cavity is provided with a pressure relief structure communicating with the first accommodation cavity on the side wall away from the second accommodation cavity.

[0019] In some embodiments, the battery pack further includes a heat exchange assembly, at least part of the heat exchange assembly is arranged between adjacent two layers of the battery assembly.

[0020] In some embodiments, the heat exchange assembly comprises a heat exchange member and a conveying member, the heat exchange member is arranged between two adjacent battery groups, and the conveying member is in communication with the heat exchange member for conveying heat exchange medium to the heat exchange member.

[0021] In some embodiments, the conveying member and the power distribution member are respectively located on different sides of the battery module.

[0022] In some embodiments, the conveying member and the power distribution member are respectively located on two sides of the first direction of the battery module.

[0023] A vehicle according to embodiments of the present disclosure comprises the aforementioned battery pack.

[0024] A vehicle according to embodiments of the present disclosure can improve the use safety of the vehicle and reduce the use cost of the vehicle by employing the aforementioned battery pack.

[0025] Additional aspects and advantages of the present disclosure will become apparent from the following description, with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and / or additional aspects and advantages of the present disclosure will become apparent and more readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0027] FIG. 1 is a schematic view of a partial structure of a battery pack according to some embodiments of the present disclosure.

[0028] FIG. 2 is an exploded view of a partial structure of a battery pack according to some embodiments of the present disclosure.

[0029] FIG. 3 is a top view of a partial structure of a battery pack according to some embodiments of the present disclosure.

[0030] FIG. 4 is a top view of a first layer battery assembly assembled to a housing according to some embodiments of the present disclosure.

[0031] FIG. 5 is a top view of a second layer battery assembly assembled to a housing according to some embodiments of the present disclosure.

[0032] Reference signs: 1000, battery pack; 100, battery module; 110, first output member; 120, second output member; 130, battery assembly; 131, battery cell group; 1311, battery cell; 132, first layer battery assembly; 133, second layer battery assembly; 134, third output member; 200, power distribution member; 300, housing; 330, accommodating cavity; 310, first accommodating cavity; 320, second accommodating cavity; 360, plug-in member; 400, partition beam; 500, partition plate; 600, heat exchange assembly; 610, heat exchange member; 620, conveying member. DETAILED DESCRIPTION

[0033] The embodiments of the present disclosure are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, for the purpose of explaining the present disclosure, and should not be understood as a limitation of the present disclosure.

[0034] In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by 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" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present disclosure.

[0035] The battery pack 1000 for a vehicle according to an embodiment of the present disclosure is described below with reference to the drawings of the specification.

[0036] As shown in conjunction with FIG. 1 and FIG. 2, the battery pack 1000 for a vehicle according to an embodiment of the present disclosure comprises a housing 300 and a battery module 100.

[0037] As shown in FIG. 1, a receiving cavity 330 is formed in the housing 300.

[0038] As shown in conjunction with FIG. 1 and FIG. 2, the battery module 100 comprises at least one layer of battery assembly 130, which is arranged in the receiving cavity 330 and comprises a plurality of battery monomers 1311 arranged in a first direction, the battery monomers 1311 extend in a second direction, the second direction intersects the first direction and is parallel to the driving direction of the vehicle. Wherein, the first direction herein can be understood as the left-right direction shown in FIG. 1 and FIG. 2, and the second direction can be understood as the front-rear direction shown in FIG. 1 and FIG. 2, which is parallel to the driving direction of the vehicle.

[0039] That is, the battery assembly 130 includes a plurality of battery monomers 1311 arranged along the left-right direction of the battery pack 1000, and each battery monomer 1311 is arranged along the front-rear direction of the battery pack 1000, so that the extension length of the battery monomer 1311 is parallel to the driving direction of the vehicle, so that a plurality of battery monomers 1311 can be arranged in the battery pack 1000 while ensuring the capacity of the battery pack 1000, and a plurality of battery monomers 1311 can be arranged in the driving direction of the vehicle to a certain extent, so that when the vehicle chassis is scratched by an object and the battery monomer 1311 is damaged, the object can be damaged to a certain extent. A plurality of battery monomers 1311 can be damaged due to vehicle driving, thereby reducing the maintenance cost of the battery pack 1000 and improving the use safety of the battery pack 1000.

[0040] At the same time, by arranging the battery monomer 1311 to extend along the second direction, while ensuring that the battery monomer 1311 has a certain extension length, the stress problem of the torsion working condition being transmitted to the battery monomer 1311 can be avoided to a certain extent, the service life of the battery monomer 1311 is prolonged, and the use safety of the battery monomer 1311 is improved.

[0041] In addition, by arranging the battery assembly 130 to include a plurality of battery monomers 1311, the battery module 100 can have a plurality of battery monomers 1311, which facilitates improving the capacity of the battery module 100, ensuring the working performance of the battery module 100, that is, ensuring the working performance of the battery pack 1000.

[0042] In the description of the present disclosure, unless otherwise stated, "a plurality of" means two or more.

[0043] It should be noted that by arranging at least one battery assembly 130 in the accommodation cavity 330, the structure of the battery pack 1000 can be integrated to reduce the volume of the battery pack 1000, and the battery assembly 130 can be protected and supported by the shell 300 to prolong the service life of the battery module 100, to a certain extent. The use safety of the battery module 100 is ensured, and the structure of the battery module 100 is stable, and the working performance of the battery module 100 is ensured.

[0044] From the above structure, it can be seen that the battery pack 1000 for a vehicle of the present disclosure includes a plurality of battery monomers 1311 to improve the capacity of the battery pack 1000 and ensure the working performance of the battery pack 1000.

[0045] Meanwhile, by arranging the battery monomer 1311 to extend along the second direction, the extension length of the battery monomer 1311 can be parallel to the driving direction of the vehicle, so that the battery monomer 1311 can be arranged in the driving direction of the vehicle to a certain extent while ensuring that multiple battery monomers 1311 can be arranged in the battery pack 1000 at the same time, so that when the vehicle chassis is scratched by an object and the battery monomer 1311 is damaged during vehicle driving, the object can be prevented from damaging a large number of battery monomers 1311 due to vehicle driving to a certain extent, thereby reducing the maintenance cost of the battery pack 1000 and improving the use safety of the battery pack 1000.

[0046] It can be understood that, compared with the prior art, the battery pack 1000 of the present application arranges multiple battery monomers 1311 and arranges the extension direction of the battery monomer 1311 to be parallel to the driving direction of the vehicle, so that the battery pack 1000 not only has large capacity, but also has high use safety.

[0047] In some embodiments, the battery monomer 1311 is provided with a first electrode and a second electrode in the second direction, and two adjacent battery monomers 1311 are electrically connected by the first electrode or the second electrode. Thus, the electrical connection between the two adjacent battery monomers 1311 is formed to ensure the working performance of the battery module 100 and reduce the electrical connection difficulty between the battery monomers 1311.

[0048] Wherein, the first electrode and the second electrode herein can be understood as the positive electrode and the negative electrode of the battery monomer 1311, that is, one of the first electrode and the second electrode forms the positive electrode of the battery monomer 1311, and the other forms the negative electrode of the battery monomer 1311, and the first electrode and the second electrode cooperate to achieve electrical connection between the battery monomers 1311.

[0049] Optionally, the plurality of battery monomers 1311 of each battery assembly 130 are electrically connected by a first electrical connector to form the battery assembly 130 and ensure the capacity of the battery module 100.

[0050] Wherein, the first electrical connector herein can be a connecting copper bar or a bus bar, etc. In the battery module 100, the plurality of battery monomers 1311 can be connected in series, in parallel or in mixed connection. The mixed connection means that there are both series connection and parallel connection among the plurality of battery monomers 1311.

[0051] In some embodiments, the battery monomer 1311 is a short-blade battery. Compared with a long-blade battery, the short-blade battery has high voltage and low high-voltage platform loss.

[0052] That is, the battery module 100 of the present application includes multiple layers of short-blade batteries.

[0053] Here, the short blade battery refers to a blade battery with a length in the range of 400mm-700mm, and the long blade battery refers to a blade battery with a length in the range of 800mm-1000mm.

[0054] In some embodiments, as shown in Figures 1 and 2, the battery assembly 130 has multiple layers. The multiple battery assemblies 130 are arranged along a third direction and are electrically connected. The third direction intersects with the first direction and the second direction. Here, the third direction can be understood as the vertical direction shown in Figures 1 and 2. That is, the battery pack 1000 has multiple layers of battery assemblies 130 arranged in the vertical direction of the battery pack 1000, and the multiple battery assemblies 130 are electrically connected to each other. The cooperation of the multiple battery assemblies 130 can ensure the capacity of the battery pack 1000, thereby ensuring the working performance of the battery pack 1000.

[0055] In some embodiments, as shown in Figures 1, 2, and 3, each layer of battery assembly 130 includes at least two groups of battery cells 131 arranged along a second direction, and each group of battery cells 131 includes a plurality of battery cells 1311 arranged along a first direction. Adjacent groups of battery cells 131 are electrically connected. That is, the battery module 100 of this application has multiple layers of battery assembly 130, each layer of battery assembly 130 has at least two groups of battery cells 131, and each group of battery cells 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 thereby increasing the capacity of the battery module 100.

[0056] In some embodiments, multiple battery cells 1311 within each battery cell group 131 are electrically connected by a first electrode and a second electrode to form a separate battery cell group 131. After the battery cell group 131 is formed, it has a first lead electrode and a second lead electrode, which are formed as the positive and negative electrodes of the battery cell group 131. Adjacent battery cell groups 131 located on the same layer are electrically connected through the first lead electrode and the second lead electrode to form a battery assembly 130. After the battery assembly 130 is formed, it forms a connection electrode, which is formed as the lead electrode of the battery assembly 130. Battery assemblies 130 in adjacent layers are electrically connected through the connection electrode to form a battery module 100.

[0057] The first lead electrode, the second lead electrode, and the connecting electrode mentioned above are all directly formed from the first electrode or the second electrode of the battery cell 1311, which reduces the difficulty of electrical connection of the battery module 100.

[0058] In some embodiments, as shown in FIGS. 1, 2 and 3, the battery pack 1000 further comprises a power distribution unit 200, the battery module 100 has a first output electrode and a second output electrode, the first output electrode and the second output electrode have different polarities, and the power distribution unit 200 is arranged in the accommodating cavity 330 and electrically connected with the first output electrode and the second output electrode respectively. That is, when the first output electrode is a positive electrode, the second output electrode is a negative electrode, and when the first output electrode is a negative electrode, the second output electrode is a positive electrode. Thus, when the first output electrode and the second output electrode are electrically connected with the power distribution unit 200 respectively, the power distribution unit 200 can be electrically connected with the battery module 100, so as to provide stable power supply by using the power distribution unit 200, and the power distribution unit 200 can be used for power distribution and safety of the battery module 100.

[0059] Therefore, the first output electrode and the second output electrode can also be understood as the total positive electrode and the total negative electrode of the battery module 100.

[0060] Meanwhile, by arranging the power distribution unit 200 in the accommodating cavity 330, the structure of the battery pack 1000 can be integrated to reduce the volume of the battery pack 1000, and the power distribution unit 200 can be protected and supported by the shell 300, so as to prolong the service life of the power distribution unit 200, ensure the safety of the power distribution unit 200 to a certain extent, and make the structure of the power distribution unit 200 stable and ensure the working performance of the power distribution unit 200.

[0061] In some embodiments, the power distribution unit 200 is a battery disconnect unit (BDU), and the power distribution unit 200 can coordinate the function conversion and energy distribution of the motor control system for driving the electrical device, the battery management system, the charging management system, the DC / DC converter, the electric air conditioner, the electric power steering, the brake system and other high-voltage accessories, which helps to ensure the smooth operation and efficient cooperation between the components of the electrical device, improves the safety and stable operation of the high-voltage circuit system of the electrical device, and improves the performance and user experience of the electrical device.

[0062] 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, which reduces the forming difficulty of the first output electrode and the second output electrode, and further reduces the electrical connection difficulty between the battery module 100 and the power distribution unit 200.

[0063] In some embodiments, as shown in FIGS. 2, 4 and 5, the battery module 100 comprises 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 member 200 to lead out the first output electrode and to electrically connect the first output electrode with the power distribution member 200, thereby reducing the difficulty of electrically connecting the first output electrode with the power distribution member 200. The second output member 120 connects the second output electrode and the power distribution member 200 to lead out the second output electrode and to electrically connect the second output electrode with the power distribution member 200, thereby reducing the difficulty of electrically connecting the first output electrode with the power distribution member 200, and reducing the difficulty of electrically connecting the battery module 100 with the power distribution member 200.

[0064] Here, the first output member 110 and the second output member 120 can be a copper bar or a bus bar.

[0065] In some embodiments, the power distribution member 200 is provided with an electrical connection member (not shown in the drawings), and the adjacent two layers of battery assemblies 130 are electrically connected through the electrical connection member. In this case, it can also be understood that the adjacent two layers of battery assemblies 130 are electrically connected through the power distribution member 200. Since the box of the power distribution member 200 is generally provided with a protection switch, a relay and the like, the protection switch, the relay and the like can be used to control and protect the connection of the adjacent layers of battery assemblies 130, thereby improving the use safety of the battery module 100.

[0066] Of course, in other embodiments, the adjacent two layers of battery assemblies 130 can be directly electrically connected through a second electrical connection member outside the power distribution member 200, thereby reducing the difficulty of electrically connecting the adjacent two layers of battery assemblies 130.

[0067] Here, the second electrical connection member can be a copper bar or a bus bar.

[0068] In some embodiments, each layer of battery assemblies 130 has a connecting electrode for electrically connecting with the battery assembly 130 of the adjacent layer. The connecting electrode can be used to form an electrical connection between the adjacent layers of battery assemblies 130, thereby reducing the difficulty of electrical connection and facilitating the formation of the battery module 100.

[0069] In some embodiments, as shown in FIGS. 2, 4 and 5, the battery module 100 comprises a plurality of third output members 134, which are respectively connected with the connecting electrodes of each layer of battery assemblies 130 and the electrical connection members in the power distribution member 200, so that the adjacent layers of battery assemblies 130 can be electrically connected, thereby reducing the difficulty of electrically connecting the adjacent two layers of battery assemblies 130.

[0070] It should be noted that the adjacent two layers of battery assemblies 130 can be connected in series or in parallel, and no specific limitation is made herein.

[0071] In some embodiments, the first output electrode and the second output electrode are respectively located at different layers of the battery assembly 130. That is, when the battery assembly 130 has multiple layers, one of the first output electrode and the second output electrode is located at one layer of the battery assembly 130, and the other is located at another layer of the battery assembly 130. Since the battery assemblies 130 at different layers are arranged in the third direction, the first output electrode and the second output electrode are spaced apart in the third direction, so that the first output electrode and the second output electrode have a certain distance therebetween, so as to facilitate forming the first output member 110 and the second output member 120 to be respectively located at different layers of the battery assembly 130 (as shown in FIGS. 2, 4 and 5), thereby avoiding the occurrence of arc draw between the first output member 110 and the second output member 120, and improving the use safety of the battery module 100.

[0072] In some embodiments, the first output electrode and the second output electrode are staggered in the second direction and the third direction, so as to maximize the distance between the first output electrode and the second output electrode, thereby avoiding the occurrence of arc draw.

[0073] It should be noted that the staggered arrangement in the second direction and the third direction refers to that the first output electrode and the second output electrode are both spaced apart in the second direction and the third direction of the battery module 100, so as to maximize the distance between the first output electrode and the second output electrode, that is, to maximize the distance between the first output member 110 and the second output member 120, thereby avoiding the occurrence of arc draw between the first output member 110 and the second output member 120, and improving the use safety of the battery module 100.

[0074] In some embodiments, as shown in FIGS. 2, 4 and 5, the multiple-layer battery assembly 130 includes a first layer battery assembly 132 and a second layer battery assembly 133, which are respectively arranged at opposite ends of the battery module 100 in the third direction. In the second direction, the first electrode or the second electrode of one of the battery cells 1311 of the battery cell group 131 located at one end of the first layer battery assembly 132 forms the first output electrode, and the first electrode or the second electrode of one of the battery cell group 131 located at the other end of the second layer battery assembly 133 forms the 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, that is, to be staggered in the second direction and the third direction, so as to increase the distance between the first output electrode and the second output electrode.

[0075] It should be noted that, since the battery pack 1000 of the present application is provided with a plurality of battery monomers 1311, especially when the battery monomers 1311 are short knife batteries, there is a risk of insulation, which affects the safety of the battery pack 1000.

[0076] Based on this, the first output electrode and the second output electrode of the battery module 100 are arranged to be staggered in the second direction and the third direction, respectively, so that the first output electrode and the second output electrode can be diagonally arranged to maximize the distance between the first output electrode and the second output electrode, avoid the occurrence of arc phenomenon, and thus improve the safety of the battery module 100.

[0077] In some embodiments, as shown in FIGS. 1, 2 and 3, in the first direction, the first output electrode and the second output electrode are located on the same side of the battery module 100, facilitating the electrical connection of the first output 110 and the second output 120 with the power distribution 200.

[0078] In some embodiments, as shown in FIGS. 1, 2 and 3, the power distribution 200 is arranged on one side of the battery module 100 in the first direction. That is, the battery module 100 and the power distribution 200 are both arranged in the accommodating cavity 330, and the battery module 100 and the power distribution 200 are oppositely arranged in the first direction of the accommodating cavity 330, so that the battery module 100 is arranged close to the power distribution 200, facilitating the electrical connection of the battery module 100 with the power distribution 200 and reducing the difficulty of the electrical connection of the battery module 100 with the power distribution 200.

[0079] In some embodiments, as shown in FIGS. 1, 2 and 3, the housing 300 is provided with a plurality of plug-in connectors 360 at both ends in the second direction, and the power distribution 200 is provided with a plurality of electrical connection ends arranged in the second direction, each electrical connection end being electrically connected with the plug-in connector 360 on the same side, and the plug-in connector 360 being adapted to an external connector. That is, the housing 300 is provided with a plurality of plug-in connectors 360, which are arranged at intervals in the front-rear direction of the battery pack 1000, and the power distribution 200 is provided with a plurality of electrical connection ends, which are arranged in the front-rear direction of the battery pack 1000, so that the arrangement direction of the plurality of electrical connection ends is consistent with the arrangement direction of the plurality of plug-in connectors 360.

[0080] It should be noted that the electrical connection between each electrical connection end and the connector 360 on the same side refers to that, in the battery pack 1000, the second direction has one side and another side arranged oppositely, when the electrical connection end on the one side of the second direction needs to be electrically connected with the connector 360, the electrical connection end is electrically connected with the connector 360 on the one side of the second direction, and when the electrical connection end on the other side of the second direction needs to be electrically connected with the connector 360, the electrical connection end is electrically connected with the connector 360 on the other side of the second direction, so that the electrical connection between each electrical connection end and the connector 360 on the same side is formed, so that the electrical connection between the electrical connection end and the connector 360 is realized, and the distance between the electrical connection end and the corresponding connector 360 is shortened, which is beneficial to shorten the length of the electrical connection element connecting the electrical connection end and the connector 360, and to simplify the structure of the electrical connection element, reduce the use cost of the electrical connection element, and reduce the weight of the electrical connection element, so as to simplify the structure of the battery pack 1000, reduce the weight and manufacturing cost of the battery pack 1000.

[0081] At the same time, shortening the length of the electrical connection element connecting the electrical connection end and the connector 360 can also avoid the electrical connection between the electrical connection element connecting the electrical connection end and the connector 360 and other structural elements (such as the battery assembly 130) to a certain extent, thereby improving the use safety of the battery pack 1000.

[0082] In addition, the connector 360 is connected with the connector, which can reduce the electrical connection difficulty between the battery pack 1000 and the external power supply or the external power consumption element, so that the battery pack 1000 can effectively charge and discharge, thereby ensuring the working performance of the battery pack 1000.

[0083] In some embodiments, the plurality of electrical connection ends are respectively arranged on both sides of the power distribution element 200 in the second direction, so as to arrange the plurality of electrical connection ends along the second direction.

[0084] Of course, in other embodiments, the plurality of electrical connection ends can also be arranged on the same side of the power distribution element 200 but arranged in the second direction, so as to arrange the plurality of electrical connection ends along the second direction, such as that the plurality of electrical connection ends are arranged on one side of the power distribution element 200 in the first direction or the third direction, or part of the electrical connection ends are arranged on one side of the power distribution element 200 in the first direction, and the other part of the electrical connection ends are arranged on one side of the power distribution element 200 in the third direction, but the plurality of electrical connection ends are arranged in the second direction, which is also beneficial to shorten the length of the electrical connection element connecting the electrical connection end and the connector 360.

[0085] In a specific example, as shown in FIGS. 1, 2 and 3, the housing 300 is provided with two plug-in connectors 360, which are arranged at intervals in the second direction, one of the two plug-in connectors 360 is located in the front direction, and the other is located in the rear direction. The plug-in connector 360 located in the front direction is a discharge interface, and the plug-in connector 360 located in the rear direction is a fast charging interface.

[0086] Of course, in other embodiments, the plug-in connector 360 located in the front direction can be a fast charging interface, and the plug-in connector 360 located in the rear direction can be a discharge interface.

[0087] It is worth noting that the power distribution component 200 is arranged on one side of the battery module 100 in the first direction, and the plug-in connector 360 is arranged at both ends of the housing 300 in the second direction. This can to some extent avoid the battery module 100 from being formed between the power distribution component 200 and the plug-in connector 360, reduce the difficulty of electrical connection between the power distribution component 200 and the plug-in connector 360, and to some extent avoid the electrical connection between the electrical connection end and the plug-in connector 360 from being electrically connected to the battery module 100, thereby improving the use safety of the battery pack 1000.

[0088] That is, the plug-in connector 360 and the battery module 100 are respectively electrically connected to the power distribution component 200, and the plug-in connector 360 and the battery module 100 are respectively located on different sides of the power distribution component 200. This reduces the difficulty of electrical connection between the power distribution component 200 and the plug-in connector 360 and the battery module 100, and to some extent avoids the plug-in connector 360 and the battery module 100 from being electrically connected, and to some extent avoids the electrical connection between the electrical connection end and the plug-in connector 360 from being electrically connected to the electrical connection between the battery module 100 and the power distribution component 200, thereby improving the use safety of the battery pack 1000.

[0089] In some embodiments, as shown in FIGS. 2 and 3, the housing 300 is provided with a partition beam 400, which divides the accommodation cavity 330 into a first accommodation cavity 310 accommodating the battery assembly 130 and a second accommodation cavity 320 accommodating the power distribution component 200. The first accommodation cavity 310 and the second accommodation cavity 320 are arranged at intervals in the first direction. This can arrange the power distribution component 200 on one side of the battery module 100 in the first direction, reduce the difficulty of electrical connection between the battery module 100 and the power distribution component 200, and also utilize the first accommodation cavity 310 and the second accommodation cavity 320 to to some extent avoid the electrical connection between the power distribution component 200 and the plug-in connector 360 from being electrically connected to the battery module 100, thereby improving the use safety of the battery pack 1000.

[0090] In addition, the distribution component 200 and the battery module 100 can be separated by the partition beam 400, thereby achieving isolation of the distribution component 200 and the battery module 100, avoiding direct contact between the distribution component 200 and the battery module 100 to form an electrical connection, and improving the use safety of the battery pack 1000.

[0091] Meanwhile, the distribution component 200 and the battery module 100 can be limited by the partition beam 400, improving the position stability of the distribution component 200 and the battery module 100, so as to ensure the working performance of the distribution component 200 and the battery module 100.

[0092] In addition, the structural strength of the partition beam 400 supporting the reinforced shell 300 can be improved.

[0093] In some embodiments, the partition beam 400 is arranged in the shell 300 and fixedly connected with the shell 300, so as to ensure the position stability of the partition beam 400, thereby ensuring the working performance of the partition beam 400.

[0094] In some embodiments, the second accommodating cavity 320 is provided with a plurality of plug-in parts 360 arranged opposite to the distribution component 200, so as to facilitate electrical connection between the distribution component 200 and the plug-in part 360.

[0095] In some embodiments, the shell 300 is further provided with a partition plate 500 arranged between two adjacent groups of battery monomer groups 131 on the same side, so as to isolate the two adjacent groups of battery monomer groups 131 from each other, while avoiding direct contact between the two adjacent groups of battery monomer groups 131, and improving the position stability of the battery monomer group 131.

[0096] In some embodiments, the partition plate 500 is formed as a heat insulation plate, so that the partition plate 500 can block the high-temperature and high-pressure gas discharged from the explosion-proof valve of the battery monomer 1311, so as to avoid the high-temperature and high-pressure gas from affecting the adjacent group of battery monomer groups 131 through the partition plate 500, thereby avoiding mutual propagation of the battery monomer 1311 when thermal runaway occurs, and improving the use safety of the battery pack 1000.

[0097] That is to say, the battery pack 1000 of the present application can not only successfully release pressure, but also avoid mutual influence between adjacent groups of battery monomer groups 131 when releasing pressure.

[0098] It should be noted that the explosion-proof valve is used to open when the internal pressure of the battery monomer 1311 exceeds a preset value, so as to achieve pressure relief and improve the use safety of the battery monomer 1311. The specific structure of the explosion-proof valve is well known to those skilled in the art and will not be described here.

[0099] In a specific example, the partition plate 500 is made of mica plate, which has a high melting point, so that the partition plate 500 can be formed as a heat insulation plate, thereby avoiding the heat discharged by the battery monomer 1311 from penetrating the partition plate 500, and to some extent, avoiding the mutual influence of the two adjacent groups of battery monomer groups 131 during pressure relief, and ensuring the use safety of the battery pack 1000.

[0100] In some embodiments, the side wall of the first accommodating cavity 310 away from the second accommodating cavity 320 is provided with a pressure relief structure communicating with the first accommodating cavity 310. By providing the pressure relief structure, the accumulation of high-pressure gas in the first accommodating cavity 310 can be avoided, and the heat runaway can be avoided, thereby improving the use safety of the battery pack 1000.

[0101] At the same time, by arranging the pressure relief structure on the side wall of the first accommodating cavity 310 away from the second accommodating cavity 320, the pressure relief structure can be arranged away from the power distribution component 200, so that the high-temperature and high-pressure gas discharged through the pressure relief structure can be prevented from affecting the power distribution component 200 to some extent, thereby prolonging the service life of the power distribution component 200 and ensuring the use safety of the power distribution component 200.

[0102] In some embodiments, as shown in FIG. 2, the battery pack 1000 further comprises a heat exchange assembly 600, and at least part of the heat exchange assembly 600 is arranged between the two adjacent battery assemblies 130. The purpose of adjusting the temperature of the battery assembly 130 by using the heat exchange assembly 600 is achieved, that is, the temperature of the battery monomer 1311 is adjusted, so that the temperature of the battery monomer 1311 during work can be maintained within a suitable temperature range, thereby ensuring the use safety of the battery monomer 1311, and also ensuring the working performance of the battery monomer 1311.

[0103] In some embodiments, as shown in FIG. 2, the heat exchange assembly 600 comprises a heat exchange component 610 and a conveying component 620, the heat exchange component 610 is arranged between the two adjacent battery assemblies, and the conveying component 620 communicates with the heat exchange component 610 to convey heat exchange medium to the heat exchange component 610. Thus, the temperature of the battery assembly 130 can be adjusted by using the heat exchange assembly 600, so as to ensure the use safety and working performance of the battery monomer 1311.

[0104] In some embodiments, the heat exchange component 610 is formed as a heat exchange plate, and the heat exchange plate communicates with the conveying component 620, so that the heat exchange plate can be filled with heat exchange medium, and the heat exchange medium is used for heat exchange with the two adjacent battery assemblies 130, thereby achieving the purpose of adjusting the temperature of the battery monomer 1311 by using the heat exchange assembly 600.

[0105] Optionally, the conveying component 620 is a conveying pipe, which is used for conveying the heat exchange medium towards the heat exchange component 610, so as to ensure the heat exchange effect of the heat exchange component 610.

[0106] The heat exchange medium can be refrigerant.

[0107] In some embodiments, as shown in FIG. 2, the conveying member 620 and the power distribution member 200 are respectively located at different sides of the battery module 100. In this way, the conveying member 620 is arranged away from the power distribution member 200, which can to some extent avoid the condensation problem of the power distribution member 200 caused by the temperature change of the refrigerant in the conveying member 620, and improve the safety of the power distribution member 200.

[0108] Meanwhile, by arranging the conveying member 620 and the power distribution member 200 at different sides of the battery module 100, the inlet and outlet sides of the conveying member 620 can be arranged, which can reduce the complexity of the conveying member 620 and effectively increase the utilization efficiency of the space in the battery pack 1000.

[0109] In some embodiments, as shown in FIG. 2, the conveying member 620 and the power distribution member 200 are respectively located at two sides of the battery module 100 in the first direction. In this way, the conveying member 620 and the power distribution member 200 are respectively located at different sides of the battery module 100, which can to some extent avoid the condensation problem of the power distribution member 200 caused by the temperature change of the refrigerant in the conveying member 620, and improve the safety of the power distribution member 200.

[0110] Of course, in some other embodiments, the conveying member 620 and the power distribution member 200 can also be located at the same side of the battery module 100 but are arranged at intervals in the third direction, so as to arrange the conveying member 620 and the power distribution member 200 in the same area and effectively increase the space utilization rate of the battery pack 1000.

[0111] In some embodiments, as shown in FIGS. 1 and 2, the battery module 100 includes two layers of battery assemblies 130, and the two layers of battery assemblies 130 are arranged in a stacked manner in the third direction. In the third direction, the battery cells 1311 in the battery assembly 130 located at the lower layer can be directly placed in the shell 300, and the battery cells 1311 in the battery assembly 130 located at the upper layer can be first assembled into a plurality of battery cell groups 131 and then placed in the shell 300 in a hoisting manner, which can increase the assembly property and reduce the assembly difficulty of the battery pack 1000.

[0112] A vehicle according to an embodiment of the present disclosure is described below.

[0113] A vehicle according to an embodiment of the present disclosure includes a battery pack 1000.

[0114] The battery pack 1000 is the aforementioned battery pack 1000, and the specific structure of the battery pack 1000 is not described herein.

[0115] As can be seen from the above structure, the vehicle according to the embodiment of the present disclosure can improve the use safety of the vehicle and reduce the use cost of the vehicle by using the aforementioned battery pack 1000.

[0116] In the description of the present disclosure, it should be noted that the terms "mounting", "connection", "connecting" should be understood as broad, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0117] The two-layer battery assembly 130 is shown in FIG. 2 for illustrative purposes, but a person of ordinary skill in the art can understand after reading the above technical solutions that the technical solutions can be applied to a three-layer or more-layer battery assembly 130, which also falls within the protection scope of the present disclosure.

[0118] The battery pack 1000 for a vehicle and other configurations of the vehicle according to the embodiments of the present disclosure are known to those skilled in the art, and will not be described in detail here.

[0119] In the description of the present disclosure, the description referring to the terms "embodiment", "example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative expressions 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 any one or more embodiments or examples in a suitable manner.

[0120] Although the embodiments of the present disclosure have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present disclosure, and the scope of the present disclosure is defined by the claims and their equivalents.

Claims

1. A battery pack for a vehicle, characterized by, The application relates to a battery module. The battery module comprises a housing (300) and a battery module (100). The battery module (100) comprises at least one battery assembly (130) arranged in the accommodating cavity (330) and comprising a plurality of battery cells (1311) arranged in a first direction, the battery cells (1311) extending in a second direction intersecting the first direction and parallel to the driving direction of the vehicle.

2. The battery pack of claim 1, wherein, The battery assembly (130) has multiple layers arranged in a third direction intersecting the first direction and the second direction and electrically connected.

3. The battery pack of claim 2, wherein, Each layer of the battery assembly (130) comprises at least two groups of battery cell groups (131) arranged in the second direction, each group of the battery cell groups (131) comprising a plurality of battery cells (1311) arranged in the first direction, and adjacent two groups of the battery cell groups (131) being electrically connected.

4. The battery pack of claim 2, wherein, The battery module (100) has a first output electrode and a second output electrode with different polarities, and the power distribution component (200) is arranged in the accommodating cavity (330) and electrically connected with the first output electrode and the second output electrode respectively.

5. The battery pack of claim 4, wherein, The power distribution component (200) is provided with an electrical connection component, and adjacent two layers of the battery assembly (130) are electrically connected through the electrical connection component.

6. The battery pack of claim 4, wherein, The first output electrode and the second output electrode are respectively located in different layers of the battery assembly (130).

7. The battery pack of claim 4, wherein, The first output electrode and the second output electrode are arranged in a staggered manner in the second direction and the third direction.

8. The battery pack of claim 4, wherein, The power distribution component (200) is arranged on one side of the battery module (100) in the first direction.

9. The battery pack of claim 4, wherein, The housing (300) is provided with a plug-in component (360) at each end in the second direction, the power distribution component (200) is provided with a plurality of electrical connection ends arranged in the second direction, each electrical connection end is electrically connected with the plug-in component (360) on the same side, and the plug-in component (360) is adapted to an external connector.

10. The battery pack of claim 4, wherein, The housing (300) is provided with a partition beam (400) separating the accommodating cavity (330) into a first accommodating cavity (310) accommodating the battery assembly (130) and a second accommodating cavity (320) accommodating the power distribution component (200), and the first accommodating cavity (310) and the second accommodating cavity (320) are arranged in a spaced manner in the first direction.

11. The battery pack of claim 10, wherein, The side wall of the first accommodating cavity (310) away from the second accommodating cavity (320) is provided with a pressure relief structure communicating with the first accommodating cavity (310).

12. The battery pack of any one of claims 4-11, wherein, The application further comprises a heat exchange assembly (600), and at least part of the heat exchange assembly (600) is arranged between adjacent two layers of the battery assembly (130).

13. The battery pack of claim 12, wherein, The heat exchange assembly (600) comprises a heat exchange piece (610) and a conveying piece (620), the heat exchange piece (610) is arranged between two adjacent layers of the battery pack, and the conveying piece (620) is communicated with the heat exchange piece (610) for conveying a heat exchange medium to the heat exchange piece (610).

14. The battery pack of claim 13, wherein, The conveying piece (620) and the power distribution piece (200) are located at different sides of the battery module (100) respectively.

15. The battery pack of claim 14, wherein, The conveying piece (620) and the power distribution piece (200) are located at two sides of the first direction of the battery module (100) respectively.

16. A vehicle characterized by comprising: A battery pack comprising any of the features of claims 1-15.

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