Battery and vehicle

Abstract

The utility model discloses a battery and a vehicle. A battery is applied to a vehicle. The battery comprises a box body, a battery management unit, a first-layer battery cell and a second-layer battery cell. The box body comprises a box shell and a box cover, the box shell is provided with an opening, the box cover covers the opening in the first direction, the box cover is provided with an avoiding part, and the avoiding part is used for avoiding a vehicle beam of the vehicle. The first layer of single batteries and the second layer of single batteries are arranged in the box body and are stacked along a first direction; the first-layer battery monomers are closer to the box cover than the second-layer battery monomers, each first-layer battery monomer comprises a first battery module and a second battery module which are located on the two sides of the avoiding part in the second direction, and the first direction is perpendicular to the second direction. The battery management unit is arranged in the box body. And the battery management unit is positioned between the first battery module and the second battery module and is staggered with the avoiding part along the second direction. According to the technical scheme provided by the invention, the volume energy density of the battery can be improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular, to a battery and a vehicle. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages of energy conservation and environmental protection. For electric vehicles, battery technology is an important factor related to their development.

[0003] In the development of battery technology, how to improve the energy density of batteries is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The present application provides a battery and a vehicle, and the technical solution provided in the present application can improve the volume energy density of the battery.

[0005] This application is achieved through the following technical solutions:

[0006] In a first aspect, the present application provides a battery. It is applied to a vehicle. The battery includes a case, a battery management unit, a first layer of battery cells and a second layer of battery cells. The case includes a case shell and a case cover, the case shell has an opening, the case cover covers the opening along a first direction, and the case cover is provided with an avoidance portion, and the avoidance portion is used to avoid the beam of the vehicle. The first layer of battery cells and the second layer of battery cells are arranged in the case and stacked along the first direction. The first layer of battery cells is closer to the case cover than the second layer of battery cells, and the first layer of battery cells includes a first battery module and a second battery module located on both sides of the avoidance portion along the second direction, and the first direction and the second direction are perpendicular to each other. The battery management unit is arranged in the case. The battery management unit is located between the first battery module and the second battery module and is misaligned with the avoidance portion along the second direction.

[0007] In the above scheme, by arranging the first battery module and the second battery module on both sides of the avoidance portion, the space on the side of the vehicle beam can be effectively utilized, so that the box can load more battery cells, improve the space utilization rate of the battery, and help improve the volume energy density of the battery. At the same time, by arranging the battery management unit between the first battery module and the second battery module and dislocating it with the avoidance portion along the second direction, the battery management unit can reasonably utilize the space between the two longitudinal beams of the vehicle beam, reduce the space occupied by the battery management unit for the battery cells, so that the box can install more battery cells, improve the space utilization rate of the battery, and make the volume energy density of the battery high.

[0008] According to some embodiments of the present application, the avoidance portion includes a first groove and a second groove spaced apart along the second direction, the first groove and the second groove are formed by the box cover being recessed toward the box shell, the first groove and the second groove are respectively used to avoid two longitudinal beams of the vehicle beam, and the battery management unit is located between the first groove and the second groove.

[0009] In the above scheme, by forming the first groove and the second groove on the box cover, on the one hand, the two longitudinal beams of the vehicle can be effectively avoided, so that the battery cells in the box body can use the space on the sides of the longitudinal beams, and the battery thermal management unit can use the space between the two longitudinal beams, so as to load more battery cells to improve the volume energy density of the battery; on the other hand, because the strength of the box cover is lower than that of the box shell, the first groove and the second groove can be efficiently formed on the box cover, so that the manufacturing efficiency of the battery is high.

[0010] According to some embodiments of the present application, the battery also includes a connector, which is connected to the battery management unit and is used to connect to the vehicle end so that the battery is electrically or fluidically connected to the vehicle body, and the connector is located between the first groove and the second groove.

[0011] In the above scheme, by arranging the connector between the first groove and the second groove, on the one hand, the space between the two longitudinal beams can be reasonably utilized, reducing the space occupied by the connector for the battery cells, so that more battery cells can be loaded to increase the volume energy density of the battery; on the other hand, the connector can be protected by the longitudinal beam, so that the electrical connection or fluid communication between the battery and the vehicle end is more temperature-controlled.

[0012] According to some embodiments of the present application, the battery also includes a thermal management component, the thermal management component includes a first layer of thermal management components and a second layer of thermal management components stacked along a first direction, the first layer of thermal management components includes two thermal management components separated from each other, the two thermal management components are respectively located on both sides of the battery management unit along the second direction to respectively adjust the temperature of the first battery module and the second battery module, and the second layer of thermal management components is used to adjust the battery cells away from the second layer.

[0013] In the above scheme, by setting a first layer of heat pipe components and a second layer of thermal management components, and setting thermal management components corresponding to the first battery module and the second battery module, the temperature of the battery cells of each unit in the box can be effectively regulated and managed, so that the risk of thermal runaway of the battery is small and the reliability of the battery is high; at the same time, by arranging the two thermal management components at intervals along the second direction, the battery management unit located in the middle can be avoided, which can meet the space requirements of the battery management unit on the one hand, and save the cost of thermal management on the other hand based on the consideration that the battery management unit has low requirements for thermal management.

[0014] According to some embodiments of the present application, the second layer of battery cells includes a third battery module, a fourth battery module, and a fifth battery module arranged in sequence along the second direction, and along the first direction, the projection of the first battery module and the projection of the third battery module at least partially overlap, and the projection of the second battery module and the projection of the fifth battery module at least partially overlap. The battery also includes a first partition beam and a second partition beam, the first partition beam is arranged between the third battery module and the fourth battery module, and the second partition beam is arranged between the fourth battery module and the fifth battery module.

[0015] In the above scheme, by setting the first partition beam and the second partition beam, on the one hand, the structural strength of the box can be improved so that the battery cells are stably placed in the accommodating space; on the other hand, the third battery module, the fourth battery module and the fifth battery module can be separated so that the third battery module, the fourth battery module and the fifth battery module are independent of each other and do not interfere with each other, thereby reducing the risk of thermal runaway of the battery, thereby making the battery have higher reliability.

[0016] According to some embodiments of the present application, the first battery module, the second battery module, the third battery module, the fourth battery module and the fifth battery module are all connected to a battery management unit.

[0017] In the above solution, the battery management unit can manage each battery module, so that the battery integration is high, thereby effectively outputting and inputting electric energy.

[0018] According to some embodiments of the present application, the thermal management component has a flow channel inside, and the flow channel is used to contain a medium to adjust the temperature of the battery cell. The flow channels inside the two thermal management components are respectively connected to the flow channels inside the second layer of thermal management components.

[0019] In the above scheme, the thermal management component can effectively exchange heat with the battery cell through the medium inside it, thereby efficiently adjusting the temperature of the battery cell. At the same time, by connecting the internal flow channel of the first layer of thermal management components with the internal flow channel of the second layer of thermal management components, the flow efficiency of the medium can be improved, which is beneficial to the thermal management efficiency of the battery cell, so that the battery has higher reliability.

[0020] According to some embodiments of the present application, the second layer of thermal management components includes a first thermal management part, a second thermal management part and a third thermal management part. The first thermal management part, the second thermal management part and the third thermal management part are respectively arranged corresponding to the third battery module, the fourth battery module and the fifth battery module, and the flow channel inside the first thermal management part, the flow channel inside the second thermal management part and the flow channel inside the third thermal management part are interconnected.

[0021] In the above scheme, by setting the first thermal management unit, the second thermal management unit and the third thermal management unit to correspond to the third battery module, the fourth battery module and the fifth battery module, the temperatures of the third battery module, the fourth battery module and the fifth battery module are managed respectively, thereby effectively improving the thermal management capability of the battery and making the battery have higher reliability.

[0022] According to some embodiments of the present application, two thermal management components, a first thermal management portion, a second thermal management portion and a third thermal management portion are arranged in parallel; or, two thermal management components and a second layer of thermal management components are arranged in series.

[0023] In the above scheme, in some embodiments, by arranging two thermal management components, the first thermal management unit, the second thermal management unit and the third thermal management unit in parallel, the medium can be evenly heat-exchanged with the battery modules at the corresponding positions, so that the thermal management consistency of the battery is high, thereby effectively reducing the risk of thermal runaway of the battery, and thus the reliability of the battery is high. In some embodiments, by arranging two thermal management components in series with the second layer of thermal management components, the flow path of the medium can be shortened, thereby reducing the energy consumption of the medium in the path that does not act on the battery module, so that the heat exchange efficiency of the medium is high, and the purpose of saving energy is achieved.

[0024] According to some embodiments of the present application, the second-layer heat management component includes two plate-like members stacked along a first direction, and the two plate-like members together form a flow channel inside the second-layer heat management component.

[0025] In the above scheme, the second layer of thermal management components is formed by stacking two plate-like members, which can make the second layer of thermal management components highly integrated and effectively reduce the occupation of the internal space of the box, so that the box can load more battery cells, which is beneficial to the improvement of the battery volume energy density.

[0026] According to some embodiments of the present application, the second layer of thermal management components has a collecting input flow channel, and the flow channel inlets inside the two thermal management parts, the first thermal management part, the second thermal management part and the third thermal management part are respectively connected to the collecting input flow channel; and / or,

[0027] The second layer of thermal management components includes a collecting output flow channel, and flow channel outlets inside the two thermal management components, the first thermal management part, the second thermal management part and the third thermal management part are respectively communicated with the collecting output flow channel.

[0028] In the above scheme, by setting the current collecting input flow channel and the current collecting output flow channel, it is possible to realize that two thermal management components, the first thermal management unit, the second thermal management unit and the third thermal management unit are arranged in parallel, so that the medium can evenly exchange heat with the battery modules at the corresponding positions, so that the thermal management consistency of the battery is high, thereby effectively reducing the risk of thermal runaway of the battery, and thus the reliability of the battery is high. At the same time, by integrating the parallel current collecting input flow channel or the current collecting output flow channel into the second layer of thermal management components, the occupation of the internal space of the box by the integrated flow channel can be reduced, so that the box can load more battery cells, which is conducive to the improvement of the volume energy density of the battery.

[0029] According to some embodiments of the present application, the two thermal management components include a first thermal management component and a second thermal management component, and the battery also includes a connecting pipe, and the first thermal management component and the second thermal management component are respectively connected to the collecting input flow channel through different connecting pipes, and / or the first thermal management component and the second thermal management component are respectively connected to the collecting output flow channel through different connecting pipes.

[0030] In the above scheme, a connecting pipe is provided so that the first thermal management component and the second thermal management component located above the second layer of thermal management components are effectively connected to the second layer of thermal management components, so that the medium can flow before the first layer of thermal management components and the second layer of thermal management components, thereby effectively exchanging heat with the battery cells of each unit in the box, reducing the risk of thermal runaway of the battery and making the battery have higher reliability.

[0031] According to some embodiments of the present application, the second layer of thermal management components includes a first current collecting area and a second current collecting area, and the first current collecting area and the second current collecting area are respectively arranged corresponding to the first dividing beam and the second dividing beam; at least part of the current collecting input flow channel is located in the first current collecting area, and at least part of the current collecting output flow channel is located in the second current collecting area.

[0032] In the above scheme, by respectively arranging at least part of the collecting input flow channel and at least part of the collecting output flow channel in the first collecting area and the second collecting area, the corresponding positions of the first dividing beam and the second dividing beam can be utilized to reduce the space occupied by the first thermal management part, the second thermal management part and the third thermal management part, thereby not affecting the thermal management effect of the third battery module, the fourth battery module and the fifth battery module, effectively reducing the risk of thermal runaway of the battery, and making the battery have higher reliability.

[0033] According to some embodiments of the present application, the first partition beam and the second partition beam are respectively formed with a receiving groove, and the receiving groove is used to embed the connecting pipe.

[0034] In the above scheme, accommodating grooves are respectively provided on the first partition beam and the second partition beam so that the connecting pipe can utilize the space where the first partition beam is located, thereby reducing the space occupied by the connecting pipe on the battery cells, so that the box can load more battery cells, which is beneficial to the improvement of the battery volume energy density.

[0035] In a second aspect, the present application further provides a vehicle, the vehicle comprising a vehicle body and the battery provided above. The vehicle body has a vehicle beam, and the avoidance portion of the battery is arranged corresponding to the vehicle beam.

[0036] In the above solution, the battery cells and battery management unit inside the battery can utilize the space on the side of the vehicle beam, so that the battery capacity is larger and the vehicle's endurance is longer.

[0037] According to some embodiments of the present application, when projected along the second direction, the projection of the first layer of battery cells overlaps with at least a portion of the projection of the vehicle beam.

[0038] In the above scheme, the first layer of battery cells can utilize the space on the side of the vehicle, so that the box can load more battery cells, improve the space utilization of the battery, and help increase the volume energy density of the battery, thereby extending the vehicle's endurance.

[0039] According to some embodiments of the present application, when projected along the second direction, the projection of the battery management unit overlaps with at least a portion of the projection of the vehicle beam.

[0040] In the above scheme, the battery management unit can utilize the space on the side of the vehicle beam to reduce the space occupied by the battery management unit for the battery cells, so that the box can install more battery cells, improve the space utilization of the battery, and make the battery volume energy density high.

[0041] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 A schematic diagram of a vehicle according to some embodiments of the present application;

[0044] Figure 2A schematic diagram of a battery in some embodiments of the present application;

[0045] Figure 3 Schematic diagram of a battery and a beam in some embodiments of the present application;

[0046] Figure 4 A three-dimensional exploded view of a local structure of a battery in some embodiments of the present application;

[0047] Figure 5 This is a schematic diagram of the internal structure in some embodiments of the present application;

[0048] Figure 6 A schematic diagram of a thermal management component in some embodiments of the present application;

[0049] Figure 7 This is a schematic diagram of the internal flow channel of the second layer thermal management component in some embodiments of the present application;

[0050] Figure 8 Schematic diagram of thermal management components in other embodiments of the present application;

[0051] Fig. 9 Schematic diagram of two plate-like members in some embodiments of the present application;

[0052] Fig.10 This is a schematic diagram of a box shell, a first partition beam, and a second partition beam in some embodiments of the present application.

[0053] Icons: 1000-vehicle; 100-battery; 200-controller; 300-motor; 10-box; 11-box shell; 12-box cover; 13-avoidance part; 130-first groove; 131-second groove; 20-first layer battery monomer; 21-first battery module; 22-second battery module; 30-second layer battery monomer; 31-third battery module; 32-fourth battery module; 33-fifth battery module; 80-battery management unit; 81-connector; 40-thermal management assembly; 41-first layer thermal management component; 410-thermal management element; 410a-first thermal management element; 410b-second thermal management element; 42-second layer thermal management element; 420-first thermal management part; 421-second thermal management part; 422-third thermal management part; 423-collecting input flow channel; 424-collecting output flow channel; 4 25-first collecting area; 426-second collecting area; 4250-through hole; 43-plate-shaped member; 430-groove; AA-total medium inlet; Aa-first upper layer inlet; Ab-second upper layer inlet; Ac-first lower layer inlet; Ad-second lower layer inlet; Ae-third lower layer inlet; BA-total medium outlet; Ba-first upper layer outlet; Bb-second upper layer outlet; Bc-first lower layer outlet; Bd-second lower layer outlet; Be-third lower layer outlet; 50-first dividing beam; 51-second dividing beam; 52-accommodating groove; 60-connecting pipe; 61-first connecting pipe; 62-second connecting pipe; 63-third connecting pipe; 64-fourth connecting pipe; 65-fifth connecting pipe; 66-sixth connecting pipe; 70-car beam; 71-longitudinal beam; z-first direction; x-second direction; y-third direction. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0055] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0056] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0057] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0059] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0060] In some embodiments, the battery may be a battery module. When there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0061] In some embodiments, the battery may be a battery pack, which includes a case and battery cells, wherein the battery cells or battery modules are accommodated in the case.

[0062] In some embodiments, the battery cell may be a secondary battery, which refers to a battery cell that can be used continuously by activating the active material by charging after the battery cell is discharged. The battery cell may be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., and the embodiments of the present application are not limited thereto.

[0063] The battery also includes a box body, which includes a box shell and a box cover. The box shell has an opening, and the box cover is covered on the box shell to close the opening, so that the box shell and the box cover together enclose a closed space, and the battery cell is arranged in the closed space to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cell. In some embodiments, the box cover can be located above the box shell.

[0064] In recent years, electric vehicles have developed by leaps and bounds. In the field of electric vehicles, batteries, as the power source of electric vehicles, play an irreplaceable and important role. As the core component of electric vehicles, batteries have high requirements in terms of energy density.

[0065] At present, the battery is set at the bottom of the vehicle, below the beam. Considering that the ground clearance of the vehicle cannot be too low when the battery is applied to the vehicle, the height of the battery cannot be too large, so the number of battery cells contained in the box is small, which affects the volume energy density of the battery.

[0066] In view of this, in order to reduce the impact on the ground clearance of the vehicle after the battery is applied to the vehicle, and to make the battery have a higher volume energy density, some embodiments of the present application provide a battery, the battery includes a box body, a battery management unit, a first layer of battery cells and a second layer of battery cells. The box body includes a box shell and a box cover, the box shell has an opening, the box cover covers the opening along a first direction, and the box cover is provided with an avoidance portion, and the avoidance portion is used to avoid the beam of the vehicle. The first layer of battery cells and the second layer of battery cells are arranged in the box body and are stacked along the first direction. The first layer of battery cells is closer to the box cover than the second layer of battery cells. The first layer of battery cells includes a first battery module and a second battery module located on both sides of the avoidance portion along the second direction, and the first direction and the second direction are perpendicular to each other. The battery management unit is arranged in the box body. The battery management unit is located between the first battery module and the second battery module and is misaligned with the avoidance portion along the second direction.

[0067] In the above scheme, by arranging the first battery module and the second battery module on both sides of the avoidance portion, the space on the side of the vehicle beam can be effectively utilized, and the box can be loaded with more battery cells without affecting the ground clearance of the vehicle, thereby improving the space utilization rate of the battery and facilitating the improvement of the volume energy density of the battery. At the same time, by arranging the battery management unit between the first battery module and the second battery module and dislocating it with the avoidance portion along the second direction, the battery management unit can reasonably utilize the space on the side of the vehicle beam, for example, utilizing the space between the two longitudinal beams of the vehicle beam, thereby reducing the space occupied by the battery management unit for the battery cells, so that the box can be equipped with more battery cells, improving the space utilization rate of the battery, and making the volume energy density of the battery high.

[0068] The battery disclosed in the embodiment of the present application can be used in, but not limited to, vehicles, and can also be used in other electrical devices with structural beams, wherein the battery can avoid the structural beams of other electrical devices.

[0069] The battery disclosed in the embodiment of the present application can be used, but not limited to, in an electrical device having a longitudinal beam such as a vehicle, a ship or an aircraft, and the battery can avoid the structural beam. The power supply system of the electrical device can be composed of the battery disclosed in the present application.

[0070] The embodiment of the present application provides an electric device using a battery as a power source, and the electric device may be, but is not limited to, a mobile phone, a tablet computer, a laptop computer, an electric toy, an electric tool, an electric bicycle, an electric motorcycle, an electric car, a ship, a heavy truck, a bus, a spacecraft, etc. Among them, the electric toy may include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0071] For the convenience of description, the following embodiments are described by taking a vehicle as an example of an electrical device in an embodiment of the present application.

[0072] Please refer to Figure 1 , Figure 1 Schematic diagram of vehicle 1000 of some embodiments of the present application. Vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The type of vehicle 1000 may be a sedan, an off-road vehicle, a heavy truck or a bus, etc. A battery 100 is provided inside the vehicle 1000. The battery 100 may be provided at the bottom, the head or the tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000. For example, the battery 100 may be used as an operating power source for the vehicle 1000, for the circuit system of the vehicle 1000, such as for the working power requirements during the startup, navigation and operation of the vehicle 1000.

[0073] The vehicle 1000 may further include a controller 200 and a motor 300 , wherein the controller 200 is used to control the battery 100 to supply power to the motor 300 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1000 .

[0074] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0075] In some embodiments of the present application, the vehicle body of the vehicle 1000 has a vehicle beam 70 , and the battery 100 can be arranged on the vehicle body to avoid the vehicle beam 70 .

[0076] Some embodiments of the present application provide a battery 100, see Figure 2-Figure 5 , Figure 2 This is a schematic diagram of a battery in some embodiments of the present application. Figure 3 This is a schematic diagram of a battery and a beam in some embodiments of the present application. Figure 4 This is a three-dimensional exploded view of a local structure of a battery in some embodiments of the present application. Figure 5 This is a schematic diagram of the internal structure in some embodiments of the present application.

[0077] The battery 100 is applied to a vehicle 1000. The battery 100 includes a box body 10, a battery management unit 80, a first layer of battery cells 20 and a second layer of battery cells 30. The box body 10 includes a box shell 11 and a box cover 12. The box shell 11 has an opening. The box cover 12 covers the opening along the first direction z. The box cover 12 is provided with an avoidance portion 13. The avoidance portion 13 is used to avoid the beam 70 of the vehicle 1000. The first layer of battery cells 20 and the second layer of battery cells 30 are arranged in the box body 10 and are stacked along the first direction z. The first layer of battery cells 20 is closer to the box cover 12 than the second layer of battery cells 30. The first layer of battery cells 20 includes a first battery module 21 and a second battery module 22 located on both sides of the avoidance portion 13 along the second direction x. The first direction z and the second direction x are perpendicular to each other. The battery management unit 80 is arranged in the box body 10. The battery management unit 80 is located between the first battery module 21 and the second battery module 22 and is misaligned with the avoidance portion 13 along the second direction x.

[0078] The box body 10 has a closed space inside for accommodating battery cells. The box body 10 includes a box shell 11 and a box cover 12, which are arranged along a first direction z and connected to each other, and the box shell 11 and the box cover 12 jointly define a closed space for accommodating battery cells. Optionally, the box shell 11 and the box cover 12 can be hollow structures with one side open, and the open side of the box shell 11 and the open side of the box cover 12 cooperate with each other, so that the box shell 11 and the box cover 12 jointly define a closed space; optionally, the box shell 11 can be a hollow structure with one end open, and the box cover 12 can be a plate-like structure, and the box cover 12 is arranged on the open side of the box shell 11, so that the box shell 11 and the box cover 12 jointly define a closed space. Exemplarily, the box body 10 is square, the box shell 11 and the box cover 12 of the box body 10 are arranged along the first direction z, the battery cell can be placed in the box shell 11 with the opening of the box shell 11, and the box cover 12 can cover the box shell 11 along the first direction z and close the opening. The first direction z can be the height direction of the box body 10, the box body 10 has a larger size in the second direction x, the length direction of the box body 10 can be the second direction x, and the width direction of the box body 10 can be the third direction y, and the first direction z, the second direction x and the third direction y are perpendicular to each other.

[0079] Optionally, the battery cell disposed in the box 10 may be one or more. In some embodiments, the battery 100 is provided with a plurality of battery cells, and the plurality of battery cells may be connected in series, in parallel, or in a hybrid connection. A hybrid connection means that the plurality of battery cells are connected in series and in parallel. The plurality of battery cells may be directly connected in series, in parallel, or in a hybrid connection, and then the whole formed by the plurality of battery cells may be accommodated in a closed space; of course, the battery 100 may also be a battery module formed by first connecting a plurality of battery cells in series, in parallel, or in a hybrid connection, and then the plurality of battery modules may be connected in series, in parallel, or in a hybrid connection to form a whole, and then accommodated in a closed space.

[0080] The vehicle beam 70 is a structural member of the vehicle body. In some embodiments, the vehicle beam 70 may be a frame structure straddling the front and rear axles of the vehicle body, commonly known as a beam, and is the base of the vehicle body. The functions of the vehicle beam 70 may include supporting and connecting various assemblies of the vehicle body, keeping each assembly in a relatively correct position, and bearing various loads inside and outside the vehicle body. In some embodiments, the vehicle beam 70 may include two longitudinal beams 71 arranged side by side at intervals, and the two longitudinal beams 71 may be arranged side by side at intervals along the second direction x.

[0081] The avoidance portion 13 includes a recessed structure formed on the box cover 12. The avoidance portion 13 may include an avoidance groove formed on the box cover 12. The avoidance portion 13 has the function of avoiding the vehicle beam 70 of the vehicle body when the battery 100 is applied to the vehicle 1000, so that the vehicle beam 70 passes through the avoidance portion 13. Exemplarily, the avoidance portion 13 is arranged to penetrate along the third direction y, and the longitudinal beam 71 of the vehicle beam 70 extends along the third direction y and can be located in the avoidance portion 13.

[0082] Exemplarily, the vehicle beam 70 may include two longitudinal beams 71, and correspondingly, the avoidance portion 13 may include two first grooves 130 and second grooves 131 respectively arranged corresponding to the longitudinal beams 71, the first groove 130 can accommodate one of the longitudinal beams 71, and the second groove 131 can accommodate the other longitudinal beam 71. In some embodiments, the first groove 130 and the second groove 131 may be independent of each other, that is, the first groove 130 and the second groove 131 are separated by other structural members.

[0083] In some embodiments, the box body 10 can be directly or intermittently connected to the vehicle beam 70. Exemplarily, the box body 10 is connected to the vehicle beam 70 through a bracket, or the box body 10 is directly connected to the vehicle beam 70. In some embodiments, the structural strength of the box cover 12 can be less than that of the box shell 11, and the force points of the box body 10 set on the vehicle beam 70 can be arranged on the box shell 11 with greater structural strength. Exemplarily, when the box body 10 is set on the vehicle beam 70, the first direction z can be regarded as a direction parallel to the gravity direction.

[0084] The first layer of battery cells 20 and the second layer of battery cells 30 are respectively multiple battery cells disposed in the box body 10. In some embodiments, when the first direction z is regarded as a direction parallel to the gravity direction, the box cover 12 is above the box shell 11, and the first layer of battery cells 20 can be regarded as being above the second layer of battery cells 30. The first layer of battery cells 20 may include multiple battery cells or multiple battery modules. The second layer of battery cells 30 may include multiple battery cells or multiple battery modules.

[0085] The first layer of battery cells 20 includes a first battery module 21 and a second battery module 22 that are independent of each other in position. The first battery module 21 may include one or more battery cells, or the first battery module 21 may include one or more battery modules. The second battery module 22 may include one or more battery cells, or the second battery module 22 may include one or more battery modules.

[0086] “The first layer of battery cells 20 includes a first battery module 21 and a second battery module 22 located on both sides of the avoidance portion 13 along the second direction x” can be understood as the first battery module 21 can be located on one side of the avoidance portion 13 in the second direction x, and the second battery module 22 can be located on the other side of the avoidance portion 13 in the second direction x; that is, in the second direction x, the avoidance portion 13 is located between the first battery module 21 and the second battery module 22. Exemplarily, when the battery 100 is applied to the vehicle 1000, the first battery module 21 can be located on one side of the vehicle beam 70, and the second battery module 22 is located on the other side of the vehicle 1000, for example, the first battery module 21 is located on the side of one of the longitudinal beams 71 away from the other longitudinal beam 71, and the second battery module 22 is located on the side of the other longitudinal beam 71 away from one of the longitudinal beams 71. In some embodiments, a partition is provided between the first battery module 21 and the second layer of battery cells 30, and the partition is fixedly connected to the wall of the box shell 11, and the partition can support the first battery module 21. In some embodiments, a partition is provided between the second battery module 22 and the second layer of battery cells 30 , and the partition is fixedly connected to the wall of the box shell 11 , and the partition can support the second battery module 22 .

[0087] The battery management unit 80 may include but is not limited to a battery management system. In some embodiments, the battery management unit 80 may be provided with high and low voltage connectors, liquid cooling connectors, etc. The high and low voltage connectors are used to connect to the vehicle end to achieve high and low voltage electricity transmission. The liquid cooling connector can be connected to the vehicle end to achieve the circulation of the heat exchange medium.

[0088] In the box 10 , along the second direction x, the battery 100 management component may be located between the first battery module 21 and the second battery module 22 , and disposed on the same side as the first battery module 21 and the second battery module 22 relative to the second layer of battery cells 30 .

[0089] The staggered arrangement of the battery management unit 80 and the avoidance portion 13 along the second direction x can be understood as the battery management unit 80 and the avoidance portion 13 do not interfere with each other, for example, the battery management unit 80 is located on one side of the avoidance portion 13 in the second direction x. Exemplarily, when the avoidance portion 13 includes a first groove 130 and a second groove 131 spaced apart from each other, the battery management unit 80 can be located between the first groove 130 and the second groove 131.

[0090] In some embodiments, the box cover 12 has three convex parts, which are arranged at intervals along the second direction x and together form a first groove 130 and a second groove 131. The convex parts located on both sides can respectively accommodate the first battery module 21 and the second battery module 22, and the convex part located in the middle accommodates the battery management unit 80. The size of the convex part located in the middle in the first direction z can be smaller than the size of the convex parts located on both sides in the first direction z.

[0091] In the above scheme, by arranging the first battery module 21 and the second battery module 22 on both sides of the avoidance portion 13, the space on the side of the beam 70 of the vehicle 1000 can be effectively utilized, so that the box 10 can load more battery cells, improve the space utilization rate of the battery 100, and help improve the volume energy density of the battery 100. At the same time, by arranging the battery management unit 80 between the first battery module 21 and the second battery module 22 and dislocating it with the avoidance portion 13 along the second direction x, the battery management unit 80 can reasonably utilize the space between the two longitudinal beams 71 of the beam 70, reduce the space occupied by the battery management unit 80 for the battery cells, so that the box 10 can install more battery cells, improve the space utilization rate of the battery 100, and make the volume energy density of the battery 100 high.

[0092] According to some embodiments of the present application, see Figure 3 and Figure 5 The avoidance portion 13 includes a first groove 130 and a second groove 131 spaced apart along the second direction x. The first groove 130 and the second groove 131 are formed by the box cover 12 being recessed toward the box shell 11. The first groove 130 and the second groove 131 are respectively used to avoid the two longitudinal beams 71 of the vehicle beam 70. The battery management unit 80 is located between the first groove 130 and the second groove 131.

[0093] For example, the battery 100 can be applied to a vehicle 1000 in which the vehicle beam 70 includes two longitudinal beams 71 arranged side by side. In some embodiments, the two longitudinal beams 71 are arranged side by side along the second direction x, and the box cover 12 can be provided with two first grooves 130 and second grooves 131 arranged at intervals along the second direction x corresponding to the longitudinal beams 71. The first groove 130 is used to accommodate one of the longitudinal beams 71, and the second groove 131 is used to accommodate the other longitudinal beam 71, so that the battery 100 can avoid the longitudinal beams 71.

[0094] In some embodiments, the box cover 12 forms a convex portion facing away from the box shell 11 between the first groove 130 and the second groove 131 , and the interior of the convex portion can accommodate the battery management unit 80 so that the battery management unit 80 can be located between the first groove 130 and the second groove 131 .

[0095] In the above scheme, by forming the first groove 130 and the second groove 131 on the box cover 12, on the one hand, the two longitudinal beams 71 of the vehicle 1000 can be effectively avoided, so that the battery cells in the box body 10 can use the space on the sides of the longitudinal beams 71, and the thermal management unit of the battery 100 can use the space between the two longitudinal beams 71, so as to load more battery cells to improve the volume energy density of the battery 100; on the other hand, because the strength of the box cover 12 is lower than that of the box shell 11, the first groove 130 and the second groove 131 can be efficiently formed on the box cover 12, so that the manufacturing efficiency of the battery 100 is high.

[0096] According to some embodiments of this application, see Figure 2 The battery 100 also includes a connector 81, which is connected to the battery management unit 80 and is used to connect to the vehicle end so that the battery 100 is electrically or fluidically connected to the vehicle body. The connector 81 is located between the first groove 130 and the second groove 131.

[0097] The connector 81 may be a structural component for electrical or fluid communication between the battery 100 and the vehicle end. Exemplarily, the connector 81 may include but is not limited to a high- or low-voltage connector or a liquid-cooling connector.

[0098] “The connector 81 is located between the first groove 130 and the second groove 131 ” may be understood as, when the battery 100 is applied to the vehicle 1000 , the connector 81 may be located between the two longitudinal beams 71 .

[0099] In the above scheme, by arranging the connector 81 between the first groove 130 and the second groove 131, on the one hand, the space between the two longitudinal beams 71 can be reasonably utilized to reduce the space occupied by the connector 81 for the battery cells, so that more battery cells can be loaded to increase the volume energy density of the battery 100; on the other hand, the connector 81 can be protected by the longitudinal beam 71, so that the electrical connection or fluid connection between the battery 100 and the vehicle end is more stable.

[0100] According to some embodiments of the present application, see FIG. Figure 5 and Figure 6 , Figure 6 This is a schematic diagram of a thermal management component in some embodiments of the present application.

[0101] The battery 100 also includes a thermal management component 40, which includes a first layer of thermal management components 41 and a second layer of thermal management components 42 stacked along a first direction z. The first layer of thermal management components 41 includes two thermal management components 410 separated from each other. The two thermal management components 410 are respectively located on both sides of the battery management unit 80 along the second direction x to respectively adjust the temperature of the first battery module 21 and the second battery module 22. The second layer of thermal management components 42 is used to adjust away from the second layer of battery cells 30.

[0102] The thermal management assembly 40 is a component capable of cooling or heating the battery cells.

[0103] In some embodiments, the thermal management component 40 may contain a medium to adjust the temperature of the battery cells so that the battery cells are within a suitable temperature range to ensure high reliability of the battery 100. The medium here may be a fluid (liquid) or a gas, and adjusting the temperature means heating or cooling a plurality of battery cells. In some other embodiments, when the thermal management component 40 can only heat the battery cells, the thermal management component 40 may be an electric heating structure, which is powered on to generate heat to heat the battery cells.

[0104] In some embodiments, the thermal management component 40 may be a water cooling plate, which can cool the battery cells by passing water with a relatively low temperature, and can heat the battery cells by passing water with a relatively high temperature.

[0105] See also Figure 6 The thermal management assembly 40 includes a first layer of thermal management components 41 and a second layer of thermal management components 42, which are stacked along a first direction z. The first layer of thermal management components 41 is arranged corresponding to the first layer of battery cells 20, and can adjust the temperature of the first layer of battery cells 20. The second layer of thermal management components 42 is arranged corresponding to the second layer of battery cells 30, and can adjust the temperature of the second layer of battery cells 30. Exemplarily, the first layer of thermal management components 41 is arranged below the first layer of battery cells 20, and the second layer of thermal management components 42 is arranged below the second layer of battery cells 30.

[0106] “The first-layer thermal management component 41 includes two thermal management components 410 separated from each other” can be understood as, in order to adjust the temperature of the first battery module 21 and the second battery module 22, two thermal management components 410 that are independent of each other in position are provided, so that the first-layer thermal management component 41 does not affect the battery management unit 80. Exemplarily, one thermal management component is provided below the first battery module 21, and the other thermal management component is provided below the second battery module 22.

[0107] In the above scheme, by providing the first layer of heat pipe components and the second layer of heat management components 42, and providing the heat management components 410 corresponding to the first battery module 21 and the second battery module 22, the temperature of the battery cells of each unit in the box 10 is effectively regulated and managed, so that the risk of thermal runaway of the battery 100 is small and the reliability of the battery 100 is high. At the same time, by arranging the two heat management components 410 at intervals along the second direction x, the battery management unit 80 located in the middle can be avoided, which can meet the space requirements of the battery management unit 80 on the one hand, and save the cost of thermal management based on the consideration that the battery management unit 80 has low requirements for thermal management.

[0108] According to some embodiments of this application, see Figure 4 and Figure 5 The second layer of battery cells 30 includes a third battery module 31, a fourth battery module 32 and a fifth battery module 33 arranged in sequence along the second direction x. Along the first direction z, the projection of the first battery module 21 and the projection of the third battery module 31 at least partially overlap, and the projection of the second battery module 22 and the projection of the fifth battery module 33 at least partially overlap. The battery 100 also includes a first partition beam 50 and a second partition beam 51. The first partition beam 50 is disposed between the third battery module 31 and the fourth battery module 32, and the second partition beam 51 is disposed between the fourth battery module 32 and the fifth battery module 33.

[0109] In some embodiments, the battery 100 has a larger size in the second direction x. For example, the battery 100 is in the shape of an elongated strip, and the length direction of the battery 100 may be parallel to the second direction x.

[0110] The first partition beam 50 and the second partition beam 51 are beam structures disposed in the box body 10, and the first partition beam 50 and the second partition beam 51 can improve the structural strength of the box body 10. Exemplarily, the first partition beam 50 is disposed in the box shell 11, and along the third direction y, the opposite ends of the first partition beam 50 are respectively connected to the two opposite walls of the box shell 11; the second partition beam 51 is disposed in the box shell 11, and along the third direction y, the opposite ends of the second partition beam 51 are respectively connected to the two opposite walls of the box shell 11. In some embodiments, the first partition beam 50 can be disposed corresponding to the first groove 130, that is, the first partition beam 50 can be located below the first groove 130. The second partition beam 51 can be disposed corresponding to the second groove 131, that is, the second partition beam 51 can be located below the second groove 131.

[0111] Along the second direction x, the first partition beam 50 and the second partition beam 51 divide the interior of the box shell 11 into three chambers, and the three chambers can respectively accommodate the third battery module 31, the fourth battery module 32 and the fifth battery module 33. The third battery module 31 may include one or more battery cells, or the third battery module 31 may include one or more battery modules. The fourth battery module 32 may include one or more battery cells, or the fourth battery module 32 may include one or more battery modules. The fifth battery module 33 may include one or more battery cells, or the fifth battery module 33 may include one or more battery modules.

[0112] In some embodiments, the first battery module 21 and the third battery module 31 are stacked in the first direction z. For example, a partition is provided between the first battery module 21 and the third battery module 31, a thermal management component 410 is provided on the partition, the partition is fixedly connected to the wall of the box shell 11, and the partition can support the thermal management component 410 and the first battery module 21. In some embodiments, the second battery module 22 and the fifth battery module 33 are stacked in the first direction z. For example, a partition is provided between the second battery module 22 and the fifth battery module 33, a thermal management component 410 is provided on the partition, the partition is fixedly connected to the wall of the box shell 11, and the partition can support the thermal management component 410 and the second battery module 22.

[0113] In the above scheme, by setting the first partition beam 50 and the second partition beam 51, on the one hand, the structural strength of the box body 10 can be improved, so that the battery cells are stably placed in the accommodating space; on the other hand, the third battery module 31, the fourth battery module 32 and the fifth battery module 33 can be separated, so that the third battery module 31, the fourth battery module 32 and the fifth battery module 33 are independent of each other and do not interfere with each other, thereby reducing the risk of thermal runaway of the battery 100, thereby making the battery 100 have higher reliability.

[0114] According to some embodiments of the present application, the first battery module 21 , the second battery module 22 , the third battery module 31 , the fourth battery module 32 , and the fifth battery module 33 are all connected to the battery management unit 80 .

[0115] In some embodiments, the first battery module 21, the second battery module 22, the third battery module 31, the fourth battery module 32, and the fifth battery module 33 can be electrically connected to the battery management unit 80. Exemplarily, the second battery module 22, the third battery module 31, the fourth battery module 32, and the fifth battery module 33 are first arranged in parallel in the battery management unit 80. Again exemplarily, the second battery module 22, the third battery module 31, the fourth battery module 32, and the fifth battery module 33 are arranged in series in the battery management unit 80.

[0116] In the above solution, the battery management unit 80 can manage each battery 100 module, so that the battery 100 has a high degree of integration, thereby effectively outputting and inputting electric energy.

[0117] According to some embodiments of this application, see Figure 6 The heat management component 40 has a flow channel inside, and the flow channel is used to contain a medium to adjust the temperature of the battery cell. The flow channels inside the two heat management components 410 are respectively connected to the flow channels inside the second layer of heat management components 42.

[0118] In some embodiments, the thermal management component 40 may use a containing medium to regulate the temperature of the battery cell in a manner of heat exchange with the battery cell.

[0119] The flow channel refers to a part that can accommodate a medium and allow the medium to flow. In some embodiments, the thermal management component 40 is connected to the vehicle end through a connector 81, and a medium storage device (such as a water tank) in the vehicle body provides the medium to the thermal management component 40 and realizes the circulation of the medium between the thermal management component 40 and the medium storage device. Exemplarily, when the battery 100 needs to be heated, the medium in the medium storage device flows out and is heated, and the heated medium can flow into the thermal management component to heat the battery cells in the box 10, and then flow back to the medium storage device.

[0120] In some embodiments, the thermal management assembly 40 may include a water-cooled plate, the thermal management component 410 may include a water-cooled plate, and the second thermal management component 42 may be a water-cooled plate. In some embodiments, the water-cooled plate may be formed by stacking two plate-like members, and grooves may be formed on surfaces of the plate-like members facing each other, and the grooves may form a flow channel for allowing the medium to flow through the stacked arrangement of the two plate-like members.

[0121] In some embodiments, the flow channel inside the heat management component 410 can be arranged in a circuitous manner so that the contact area between the medium and the battery cell is larger. In some embodiments, the flow inside the second layer of heat management component 42 can be arranged in a circuitous manner so that the contact area between the medium and the battery cell is larger.

[0122] “The flow channels inside the two thermal management components 410 are respectively connected to the flow channels inside the second-layer thermal management component 42” can be understood as the medium can flow through the thermal management component 410 and the second-layer thermal management component 42. In some embodiments, the two thermal management components 410 and the second-layer thermal management component 42 can be arranged in series or in parallel. For example, the medium in the vehicle-side medium storage device can flow through one of the thermal management components 410, then through the second-layer thermal management component 42, and finally flow back to the medium storage device from the other thermal management component 410.

[0123] In the above solution, the thermal management component 40 can effectively exchange heat with the battery cell through the medium inside it, thereby efficiently adjusting the temperature of the battery cell. At the same time, by connecting the internal flow channel of the first layer of thermal management components 41 and the internal flow channel of the second layer of thermal management components 42, the flow efficiency of the medium can be improved, which is beneficial to the thermal management efficiency of the battery cell, so that the battery 100 has a higher reliability.

[0124] According to some embodiments of this application, see Figure 6 and Figure 7 , Figure 7 This is a schematic diagram of the internal flow channel of the second layer thermal management component in some embodiments of the present application.

[0125] The second layer thermal management component 42 includes a first thermal management part 420, a second thermal management part 421 and a third thermal management part 422. The first thermal management part 420, the second thermal management part 421 and the third thermal management part 422 are respectively arranged corresponding to the third battery module 31, the fourth battery module 32 and the fifth battery module 33, and the flow channel inside the first thermal management part 420, the flow channel inside the second thermal management part 421 and the connection inside the third thermal management part 422 are interconnected.

[0126] The first thermal management part 420, the second thermal management part 421 and the third thermal management part 422 may be at least part of the second thermal management part 421. The first thermal management part 420, the second thermal management part 421 and the third thermal management part 422 may be arranged along the second direction x to correspond to the third battery module 31, the fourth battery module 32 and the fifth battery module 33, respectively, so as to adjust the temperatures of the third battery module 31, the fourth battery module 32 and the fifth battery module 33, respectively.

[0127] In some embodiments, the flow channel inside the first thermal management part 420, the flow channel inside the second thermal management part 421, and the flow channel inside the third thermal management part 422 are arranged in series with each other. For example, the medium in the medium storage device flows out, first passes through one of the thermal management components 410, and then passes through the first thermal management part 420, the second thermal management part 421, and the third thermal management part 422 in sequence, and finally flows back to the medium storage device through another thermal management component 410.

[0128] In some embodiments, the flow channel inside the first thermal management unit 420, the flow channel inside the second thermal management unit 421, and the flow channel inside the third thermal management unit 422 can be arranged in parallel. Alternatively, in some embodiments, the flow channel inside the first thermal management unit 420 and the flow channel inside the second thermal management unit 421 are arranged in parallel and then connected to the flow channel inside the third thermal management unit 422.

[0129] In the above scheme, by setting the first thermal management unit 420, the second thermal management unit 421 and the third thermal management unit 422 to correspond to the third battery module 31, the fourth battery module 32 and the fifth battery module 33, the temperatures of the third battery module 31, the fourth battery module 32 and the fifth battery module 33 are managed respectively, thereby effectively improving the thermal management capability of the battery 100 and making the battery 100 have higher reliability.

[0130] According to some embodiments of this application, see Figure 6 The two heat-management members 410 , the first heat-management portion 420 , the second heat-management portion 421 and the third heat-management portion 422 are arranged in parallel.

[0131] In some embodiments, "two thermal management components 410, the first thermal management unit 420, the second thermal management unit 421 and the third thermal management unit 422 are arranged in parallel" can be understood as that the medium can enter and exit the two thermal management components 410, the first thermal management unit 420, the second thermal management unit 421 and the third thermal management unit 422 without distinction of priority, so that the thermal management consistency obtained by the first battery module 21, the second battery module 22, the second battery module 22 and the third battery module 31 in the box 10 is high. Exemplarily, the medium in the medium storage device flows out and simultaneously flows into the two thermal management components 410, the first thermal management unit 420, the second thermal management unit 421 and the third thermal management unit 422 to simultaneously adjust the temperature of the first battery module 21, the second battery module 22, the second battery module 22 and the third battery module 31 in the box 10, and then returns to the medium storage device.

[0132] Exemplarily, the medium in the medium storage device flows out and is provided to the two thermal management components 410, the first thermal management part 420, the second thermal management part 421 and the third thermal management part 422 at the same time through the collecting structure, and the two thermal management components 410, the first thermal management part 420, the second thermal management part 421 and the third thermal management part 422 then discharge the medium back to the medium storage device through another collecting structure.

[0133] According to other embodiments of the present application, see Figure 8 . Figure 8 Schematic diagram of thermal management components in some other embodiments of the present application. Two thermal management components 410 are arranged in series with the second layer thermal management component 42 .

[0134] In some embodiments, the medium can flow through the two thermal management components 410 and the second thermal management component 42 in sequence to successively adjust the temperature of the first battery module 21, the second battery module 22, the second battery module 22 and the third battery module 31 in the box 10. Exemplarily, the medium in the medium storage device flows out, first passes through one of the thermal management components 410, then passes through the second thermal management component 42 in sequence, and finally flows back to the medium storage device through the other thermal management component 410. In some embodiments, the first thermal management part 420, the second thermal management part 421 and the third thermal management part 422 in the second thermal management component 42 can be connected in series, in parallel or in mixed series.

[0135] In the above scheme, in some embodiments, by arranging two thermal management components 410, the first thermal management unit 420, the second thermal management unit 421 and the third thermal management unit 422 in parallel with each other, the medium can be evenly heat-exchanged with the battery 100 modules at the corresponding positions, so that the thermal management consistency of the battery 100 is high, thereby effectively reducing the risk of thermal runaway of the battery 100, and thus the reliability of the battery 100 is high. In some embodiments, by arranging two thermal management components 410 and the second layer of thermal management components 42 in series, the flow path of the medium can be shortened, thereby reducing the energy consumption of the medium in the path that does not act on the battery 100 module, so that the heat exchange efficiency of the medium is high, and the purpose of energy saving is achieved.

[0136] According to some embodiments of this application, see Fig. 9 , Fig. 9 Schematic diagram of two plate-like members in some embodiments of the present application. The second layer of thermal management component 42 includes two plate-like members 43 stacked along the first direction z, and the two plate-like members 43 together form a flow channel inside the second layer of thermal management component 42 .

[0137] The two plate-like members 43 are stacked and connected along the first direction z, and together form a flow channel for the medium to flow. Exemplarily, a groove 430 may be formed on the surface of one of the plate-like members 43, and the surface of the other plate-like member 43 is flat. The two plate-like members 43 are stacked, and the grooves 430 define the flow channel. Exemplarily, grooves are formed on the surfaces of the two plate-like members 43, respectively, and the two plate-like members 43 are stacked, and the grooves of the two plate-like members 43 are correspondingly arranged and together form a flow channel.

[0138] In some embodiments, the plate-shaped member 43 may be formed by a roll-forming process.

[0139] In some embodiments, the connection relationship between the two plate-like members 43 includes but is not limited to welding, bonding or sealing connection.

[0140] In the above scheme, the second layer of thermal management components 42 is formed by stacking two plate-like members 43, which can make the second layer of thermal management components 42 highly integrated and effectively reduce the occupancy of the internal space of the box body 10, so that the box body 10 can load more battery cells, which is beneficial to the improvement of the volume energy density of the battery 100.

[0141] In some other embodiments, the second-layer heat management component 42 may be a common water cooling plate.

[0142] According to some embodiments of this application, see Figure 6 and Figure 7 .

[0143] The second-layer thermal management component 42 has a collecting input flow channel 423, and the flow channel inlets inside the two thermal management components 410, the first thermal management part 420, the second thermal management part 421, and the third thermal management part 422 are respectively connected to the collecting input flow channel 423. And / or, the second-layer thermal management component 42 includes a collecting output flow channel 424, and the flow channel outlets inside the two thermal management components 410, the first thermal management part 420, the second thermal management part 421, and the third thermal management part 422 are respectively connected to the collecting output flow channel 424.

[0144] The collecting channel is used to realize the parallel connection of the two heat management components 410 , the first heat management portion 420 , the second heat management portion 421 and the third heat management portion 422 .

[0145] In some embodiments, the collecting channel includes a collecting input channel 423 and a collecting output channel 424, and the collecting input channel 423 is used to connect to the inlets of the internal flow channels of the two thermal management components 410, the first thermal management part 420, the second thermal management part 421 and the third thermal management part 422, so as to be able to simultaneously provide the medium outside the thermal management component 40 to the two thermal management components 410, the first thermal management part 420, the second thermal management part 421 and the third thermal management part 422.

[0146] The collecting output flow channel 424 is used to connect with the outlets of the internal flow channels of the two thermal management components 410, the first thermal management part 420, the second thermal management part 421 and the third thermal management part 422, so as to discharge the medium in the two thermal management components 410, the first thermal management part 420, the second thermal management part 421 and the third thermal management part 422 out of the thermal management component 40 at the same time.

[0147] In some embodiments, the flow collection input channel 423 can be formed in an independent flow collection structure, such as a flow collection pipe. In some embodiments, the flow collection input channel 423 can be integrated into the second layer of thermal management components 42, for example, the flow collection input channel 423 is formed inside the second layer of thermal management components 42, and the position of the flow collection input channel 423 is independent of the flow channels of the first thermal management unit 420, the second thermal management unit 421, and the third thermal management unit 422.

[0148] In some embodiments, the current collecting output flow channel 424 can be formed in an independent current collecting structure, such as a current collecting pipe. In some embodiments, the current collecting output flow channel 424 can be integrated into the second layer of thermal management components 42, for example, the current collecting output flow channel 424 is formed inside the second layer of thermal management components 42, and the location of the current collecting output flow channel 424 is independent of the flow channels of the first thermal management unit 420, the second thermal management unit 421, and the third thermal management unit 422.

[0149] In the above scheme, by setting the current collecting input flow channel 423 and the current collecting output flow channel 424, it is possible to realize that the two thermal management components 410, the first thermal management unit 420, the second thermal management unit 421 and the third thermal management unit 422 are arranged in parallel with each other, so that the medium can be evenly heat-exchanged with the battery 100 module at the corresponding position, so that the thermal management consistency of the battery 100 is high, thereby effectively reducing the risk of thermal runaway of the battery 100, and thus the reliability of the battery 100 is high. At the same time, by integrating the parallel current collecting input flow channel 423 or the current collecting output flow channel 424 into the second layer of thermal management components 42, it is possible to reduce the occupation of the internal space of the box 10 by the integrated flow channel, so that the box 10 can load more battery cells, which is conducive to the improvement of the volume energy density of the battery 100.

[0150] According to some embodiments of this application, see Figure 6 .

[0151] The two thermal management components 410 include a first thermal management component 410a and a second thermal management component 410b. The battery 100 also includes a connecting pipe 60. The first thermal management component 410a and the second thermal management component 410b are respectively connected to the collecting input flow channel 423 through different connecting pipes 60, and / or the first thermal management component 410a and the second thermal management component 410b are respectively connected to the collecting output flow channel 424 through different connecting pipes 60.

[0152] The first thermal management component 410a may be a component capable of adjusting the temperature of the first battery module 21. The second thermal management component 421 is a component capable of adjusting the temperature of the second battery module 22. In some embodiments, the first thermal management component 410a may be located above the first thermal management component 420, and the second thermal management component 421 may be located above the third thermal management component 422, that is, the first thermal management component 410a and the second thermal management component 410b are spaced apart from the second layer of thermal management components 42 in the first direction z, and there is a distance between the two. The distance is compensated by connecting the pipe 60 to achieve communication between the flow channels.

[0153] In some embodiments, the connecting pipe 60 may include a metal pipe or a non-metal pipe. In some embodiments, the connecting pipe 60 may include two pipe structures connected by a joint.

[0154] See also Figure 6 , the first heat management component 410a is connected to the second layer heat management component 42 through the first connecting pipe 61 and the second connecting pipe 62, and the second heat management component 410b is connected to the second layer heat management component 42 through the third connecting pipe 63 and the fourth connecting pipe 64. Exemplarily, the first connecting pipe 61 connects the collecting input channel 423 and the inlet of the internal channel of the first heat management component 410a, and the second connecting pipe 62 connects the collecting output channel 424 and the outlet of the internal channel of the first heat management component 410a; the third connecting pipe 63 connects the collecting input channel 423 and the inlet of the internal channel of the second heat management component 410b, and the fourth connecting pipe 64 connects the collecting output channel 424 and the outlet of the internal channel of the second heat management component 410b.

[0155] See also Figure 6, the collecting input flow channel 423 is provided with a fifth connecting pipe 65, and the collecting output flow channel 424 is provided with a sixth connecting pipe 66, and the fifth connecting pipe 65 and the sixth connecting pipe 66 can be connected to the connector 81. The flow direction of the medium can be: the medium in the vehicle end flows into the collecting input flow channel 423 through the connector 81 through the fifth connecting pipe 65. Through the diversion of the collecting input flow channel 423, the medium flows into the flow channel of the first thermal management part 420, the flow channel of the second thermal management part 421, the flow channel of the third thermal management part 422, the flow channel of the first thermal management part 410a through the first connecting pipe 61, and the flow channel of the second thermal management part 410b through the third connecting pipe 63. After the medium has heat exchanged with the third battery module 31, the fourth battery module 32, the fifth battery module 33, the first battery module 21 and the second battery module 22 respectively, the medium located in the first thermal management part 420, the medium located in the second thermal management part 421, and the medium located in the third thermal management part 422 enter the collecting output flow channel 424, the medium located in the first thermal management component 410a enters the collecting output flow channel 424 through the second connecting pipe 62, and the medium located in the second thermal management component 410b enters the collecting output flow channel 424 through the fourth connecting pipe 64, that is, after the media in the flow channels of different parts converge in the collecting output flow channel 424, they pass through the sixth connecting pipe 66 and flow back to the vehicle end via the connector 81.

[0156] In some embodiments, see Figure 7 The collecting input flow channel 423 has a total medium inlet AA, a first upper layer inlet Aa, a second upper layer inlet Ab, a first lower layer inlet Ac, a second lower layer inlet Ad, and a third lower layer inlet Ae; the fifth connecting pipe 65 is connected to the total medium inlet AA, the first connecting pipe 61 is connected to the first upper layer inlet Aa, the third connecting pipe 63 is connected to the second upper layer inlet Ab, the first lower layer inlet Ac is connected to the internal flow channel of the first thermal management part 420, the second lower layer inlet Ad is connected to the internal flow channel of the second thermal management part 421, and the third lower layer inlet Ae is connected to the internal flow channel of the third thermal management part 422.

[0157] In some embodiments, see Figure 7 The collecting output flow channel 424 has a total medium outlet BA, a first upper layer outlet Ba, a second upper layer outlet Bb, a first lower layer outlet Bc, a second lower layer outlet Bd, and a third lower layer outlet Be; the sixth connecting pipe 66 is connected to the total medium outlet BA, the second connecting pipe 62 is connected to the first upper layer outlet Ba, the fourth connecting pipe 64 is connected to the second upper layer outlet Bb, the first lower layer outlet Bc is connected to the internal flow channel of the first thermal management part 420, the second lower layer outlet Bd is connected to the internal flow channel of the second thermal management part 421, and the third lower layer outlet Be is connected to the internal flow channel of the third thermal management part 422.

[0158] In the above scheme, a connecting pipe 60 is provided so that the first thermal management component 410a and the second thermal management component 410b located above the second thermal management component 42 are effectively connected to the second thermal management component 42, so that the medium can flow between the first thermal management component 41 and the second thermal management component 410, thereby effectively exchanging heat with the battery cells of each unit in the box body 10, reducing the risk of thermal runaway of the battery 100, and making the battery 100 have higher reliability.

[0159] According to some embodiments of the present application, see Figure 6 and Figure 7 .

[0160] The second layer thermal management component 42 includes a first current collecting area 425 and a second current collecting area 426, which are respectively arranged corresponding to the first dividing beam 50 and the second dividing beam 51; at least part of the current collecting input channel 423 is located in the first current collecting area 425, and at least part of the current collecting output channel 424 is located in the second current collecting area 426.

[0161] The first current collecting area 425 may be located between the first thermal management part 420 and the second thermal management part 421 and corresponding to the first partition beam 50. The second current collecting area 426 may be located between the second thermal management part 421 and the third thermal management part 422 and corresponding to the second partition beam 51.

[0162] In some embodiments, the first current collecting area 425 and the second current collecting area 426 may be provided with through holes 4250 , and the first partition beam 50 and the second partition beam 51 may be fixed to the bottom wall of the tank shell 11 by means of bolts passing through the through holes 4250 .

[0163] “At least part of the collector input flow channel 423 is located in the first collector area 425” can be understood as at least part of the collector input flow channel 423 can be set at the location of the first collector area 425 to reduce the occupation of the flow channel of the first thermal management part 420, the flow channel of the second thermal management part 421, and the flow channel of the third thermal management part 422. Exemplarily, most of the collector input flow channel 423 is located in the first collector area 425, for example, the part where the collector input flow channel 423 is connected to the flow channel of the first thermal management part 410a, the part where the collector input flow channel 423 is connected to the flow channel of the first thermal management part 420, and the part where the collector input flow channel 423 is connected to the flow channel of the second thermal management part 421 can be located in the first collector area 425.

[0164] “At least part of the collector output flow channel 424 is located in the second collector area 426” can be understood as at least part of the collector output flow channel 424 can be set at the location of the second collector area 426 to reduce the occupation of the flow channel of the first thermal management unit 420, the flow channel of the second thermal management unit 421, and the flow channel of the third thermal management unit 422. Exemplarily, most of the collector output flow channel 424 is located in the second collector area 426, for example, the part where the collector output flow channel 424 is connected to the flow channel of the second thermal management component 410b, the part where the collector output flow channel 424 is connected to the flow channel of the third thermal management unit 422, and the part where the collector output flow channel 424 is connected to the flow channel of the second thermal management unit 421 can be located in the first collector area 425.

[0165] In the above scheme, by respectively arranging at least a portion of the collecting input flow channel 423 and at least a portion of the collecting output flow channel 424 in the first collecting area 425 and the second collecting area 426, so as to utilize the corresponding positions of the first dividing beam 50 and the second dividing beam 51, the space occupied by the first thermal management part 420, the second thermal management part 421 and the third thermal management part 422 is reduced, thereby not affecting the thermal management effect of the third battery module 31, the fourth battery module 32 and the fifth battery module 33, effectively reducing the risk of thermal runaway of the battery 100, so that the battery 100 has higher reliability.

[0166] According to some embodiments of this application, see Fig.10 , Fig.10 This is a schematic diagram of a box shell, a first partition beam, and a second partition beam in some embodiments of the present application.

[0167] The first partition beam 50 and the second partition beam 51 are respectively formed with a receiving groove 52 , and the receiving groove 52 is used for embedding the connecting pipe 60 .

[0168] In some embodiments, the first partition beam 50 is plate-shaped, and a receiving groove 52 is formed on the surface of the first partition beam 50 in the second direction x. The connecting pipe 60 can be at least partially embedded in the receiving groove 52, so as to utilize the space occupied by the first partition beam 50 and reduce the space occupied in the second direction x, so as to provide more space in the box 10 for the battery cells. In some embodiments, the receiving groove 52 can penetrate the first partition beam 50 to accommodate the connecting pipe 60. In some embodiments, the receiving groove 52 may not penetrate the receiving groove 52, for example, the receiving groove 52 is only provided on the surface of the first partition beam 50 facing the second partition beam 51. In some embodiments, the connecting pipe 60 includes two pipe structures connected to each other by a sub-female joint, a part of the receiving groove 52 penetrates the first partition beam 50, and the other part does not penetrate the first partition beam 50. The part of the receiving groove 52 penetrating the first partition beam 50 can accommodate a larger sub-female joint, and the part of the receiving groove 52 not penetrating the first partition beam 50 can accommodate a smaller pipe structure.

[0169] In some embodiments, the first partition beam 50 may be provided with three receiving grooves 52 corresponding to the first connecting pipe 61 , the second connecting pipe 62 , and the fifth connecting pipe 65 , and the three receiving grooves 52 may be arranged at intervals.

[0170] In some embodiments, the second partition beam 51 is plate-shaped, and a receiving groove 52 is formed on the surface of the second partition beam 51 in the second direction x. The connecting pipe 60 can be at least partially embedded in the receiving groove 52, so as to utilize the space occupied by the second partition beam 51 and reduce the space occupied in the second direction x, so as to provide more space in the box 10 for the battery cells. In some embodiments, the receiving groove 52 can penetrate the second partition beam 51 to accommodate the connecting pipe 60. In some embodiments, the receiving groove 52 may not penetrate the receiving groove 52, for example, the receiving groove 52 is only provided on the surface of the second partition beam 51 facing the first partition beam 50. In some embodiments, the connecting pipe 60 includes two pipe structures connected to each other by a male-female joint, a part of the receiving groove 52 penetrates the second partition beam 51, and the other part does not penetrate the second partition beam 51. The part of the receiving groove 52 penetrating the second partition beam 51 can accommodate a larger male-female joint, and the part of the receiving groove 52 not penetrating the second partition beam 51 can accommodate a smaller pipe structure.

[0171] In some embodiments, the second partition beam 51 may be provided with three receiving grooves 52 corresponding to the third connecting pipe 63 , the fourth connecting pipe 64 , and the sixth connecting pipe 66 , and the three receiving grooves 52 may be arranged at intervals.

[0172] In the above scheme, by respectively providing the receiving grooves 52 on the first partition beam 50 and the second partition beam 51, the connecting pipe 60 can utilize the space where the first partition beam 50 is located, thereby reducing the space occupied by the connecting pipe 60 for the battery cells, so that the box body 10 can load more battery cells, which is beneficial to the improvement of the volume energy density of the battery 100.

[0173] Some embodiments of the present application further provide a vehicle 1000 , which includes a vehicle body and the battery 100 provided above. The vehicle body has a vehicle beam 70 , and the avoidance portion 13 of the battery 100 is arranged corresponding to the vehicle beam 70 .

[0174] The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. The type of the vehicle 1000 may be a sedan, an off-road vehicle, a heavy truck or a bus, etc. A battery 100 is provided inside the vehicle 1000. The battery 100 may be provided at the bottom, the head or the tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000. For example, the battery 100 may be used as an operating power source for the vehicle 1000 and for the circuit system of the vehicle 1000, such as for the working power requirements during the startup, navigation and operation of the vehicle 1000.

[0175] The beam 70 is a structural member of the vehicle body. In some embodiments, the beam 70 may be a frame structure straddling the front and rear axles of the vehicle body, commonly known as a beam, and is the base of the vehicle body. The beam 70 may support and connect various assemblies of the vehicle body, keep the assemblies in a relatively correct position, and bear various loads inside and outside the vehicle body.

[0176] See also Figure 3 In some embodiments, the vehicle beam 70 may include two longitudinal beams 71 spaced apart from each other, and the two longitudinal beams 71 may be spaced apart from each other along the second direction x. The avoidance portion 13 may avoid the two longitudinal beams 71 so that the battery 100 can utilize the space beside the longitudinal beams 71 .

[0177] Exemplarily, the avoidance portion 13 may include a first groove 130 and a second groove 131 respectively arranged corresponding to the longitudinal beams 71 . The first groove 130 can accommodate one of the longitudinal beams 71 , and the second groove 131 can accommodate the other longitudinal beam 71 .

[0178] In the above solution, the battery cells inside the battery 100 and the battery management unit 80 can utilize the space on the side of the vehicle beam 70, so that the capacity of the battery 100 is larger, and the endurance of the vehicle 1000 is longer.

[0179] According to some embodiments of the present application, when projected along the second direction x, the projection of the first layer of battery cells 20 at least partially overlaps with the projection of the beam 70 .

[0180] In some embodiments, the projections of all the battery cells of the first layer of battery cells 20 in the second direction x may fall on the beam 70 . In some embodiments, the projections of some of the battery cells of the first layer of battery cells 20 in the second direction x may fall on the beam 70 .

[0181] In the above scheme, the first layer of battery cells 20 can utilize the space on the side of the vehicle 1000, so that the box 10 can load more battery cells, improve the space utilization of the battery 100, and help improve the volume energy density of the battery 100, thereby extending the range of the vehicle 1000.

[0182] According to some embodiments of the present application, when projected along the second direction x, the projection of the battery management unit 80 at least partially overlaps with the projection of the vehicle beam 70 .

[0183] In some embodiments, the projection of the battery management unit 80 in the second direction x may partially or completely fall on the vehicle beam 70 .

[0184] In the above scheme, the battery management unit 80 can utilize the space on the side of the vehicle beam 70 to reduce the space occupied by the battery management unit 80 for the battery cells, so that the box 10 can install more battery cells, improve the space utilization of the battery 100, and make the volume energy density of the battery 100 high.

[0185] According to some embodiments of the present application, a battery 100 is provided. Figure 2-Figure 10 .

[0186] The battery 100 includes a housing 10 , a battery management unit 80 , a first layer of battery cells 20 , a second layer of battery cells 30 , and a thermal management assembly 40 .

[0187] The box body 10 includes a box shell 11 and a box cover 12. The box shell 11 has an opening, and the box cover 12 covers the opening along a first direction z. The first direction z can be regarded as a vertical direction.

[0188] The box cover 12 is recessed toward the box shell 11 to form a first groove 130 and a second groove 131, which are arranged at intervals along the second direction x. The first groove 130 is used to accommodate a longitudinal beam 71 of the vehicle body, and the second groove 131 is used to accommodate another longitudinal beam 71.

[0189] The battery management unit 80 , the first layer of battery cells 20 , the second layer of battery cells 30 , and the thermal management assembly 40 are located in the box 10 .

[0190] The first layer of battery cells 20 includes a first battery module 21 and a second battery module 22, which are spaced apart along the second direction x. The first battery module 21 is located on the side of the first groove 130 away from the second groove 131, and the second battery module 22 is located on the side of the second groove 131 away from the first groove 130.

[0191] The battery management unit 80 is located in the first groove 130 and the second groove 131 , and the battery management unit 80 exceeds the groove bottoms of the first groove 130 and the second groove 131 in the first direction z.

[0192] The second layer of battery cells 30 is located below the first layer of battery cells 20, and the second layer of battery cells 30 includes a third battery module 31, a fourth battery module 32, and a fifth battery module 33. The third battery module 31 is located below the first battery module 21, the fourth battery module 32 is located below the battery management unit 80, and the fifth battery module 33 is located below the second battery module 22. A partition may be provided between the third battery module 31 and the first battery module 21 to separate the two. A partition may be provided between the fourth battery module 32 and the battery management unit 80 to separate the two. A partition may be provided between the fifth battery module 33 and the second battery module 22 to separate the two.

[0193] The thermal management assembly 40 includes a first-layer thermal management component 41 and a second-layer thermal management component 42. The first-layer thermal management component 41 is arranged corresponding to the first-layer battery cells 20, and the second-layer thermal management component 42 is arranged corresponding to the second-layer battery cells 30. The first-layer thermal management component 41 includes a first thermal management component 410a and a second thermal management component 410b. The first thermal management component 410a carries the first battery module 21 and can adjust the temperature of the first battery module 21. The second thermal management component 410b carries the second battery module 22 and can adjust the temperature of the second battery module 22. The second-layer thermal management component 42 is a whole plate-shaped structure, which may include a first thermal management part 420, a second thermal management part 421 and a third thermal management part 422 according to its function. The first thermal management part 420 carries the third battery module 31, the second thermal management part 421 carries the fourth battery module 32, and the third thermal management part 422 carries the fourth battery module 32.

[0194] The thermal management component 40 can adjust the temperature of the battery cell by means of medium flow heat exchange. The connector 81 for the medium in and out of the thermal management component 40 can be arranged on the battery management unit 80, that is, the connector 81 can be located between the first groove 130 and the second groove 131, that is, the connector 81 can be located between the two longitudinal beams 71.

[0195] In some embodiments, the first layer of heat management components 41 and the second layer of heat management components 42 can both be rolled parts. For example, the first layer of heat management components 41 can be formed by stacking two plate-like parts, and grooves are rolled out on the surface of the plate-like parts to form a flow channel for the flow of the medium.

[0196] In some embodiments, the first thermal management component 410a, the second thermal management component 410b, the first thermal management unit 420, the second thermal management unit 421 and the third thermal management unit 422 can be arranged in parallel. Exemplarily, a parallel scheme is that the second layer thermal management component 42 has a collecting input flow channel 423, and the flow channel inlets inside the first thermal management component 410a, the second thermal management component 410b, the second thermal management unit 421 and the third thermal management unit 422 are respectively connected to the collecting input flow channel 423; the second layer thermal management component 42 includes a collecting output flow channel 424, and the flow channel outlets inside the first thermal management component 410a, the second thermal management component 410b, the first thermal management unit 420, the second thermal management unit 421 and the third thermal management unit 422 are respectively connected to the collecting output flow channel 424. The connector 81 used to connect to the vehicle end to realize medium circulation is in communication with the collecting input flow channel 423 and the collecting output flow channel 424 through the connecting pipe 60.

[0197] In other embodiments, the first heat-management member 410 a , the second heat-management member 410 b , the first heat-management portion 420 , the second heat-management portion 421 , and the third heat-management portion 422 may be arranged in series.

[0198] In the above scheme, by arranging the first battery module 21 and the second battery module 22 on both sides of the avoidance portion 13, the space on the side of the beam 70 of the vehicle 1000 can be effectively utilized, so that the box 10 can load more battery cells, improve the space utilization rate of the battery 100, and help improve the volume energy density of the battery 100. At the same time, by arranging the battery management unit 80 between the first battery module 21 and the second battery module 22 and dislocating it with the avoidance portion 13 along the second direction x, the battery management unit 80 can reasonably utilize the space between the two longitudinal beams 71 of the beam 70, reduce the space occupied by the battery management unit 80 for the battery cells, so that the box 10 can install more battery cells, improve the space utilization rate of the battery 100, and make the volume energy density of the battery 100 high. At the same time, by arranging the thermal management component 40, the temperature of the battery cells of each unit in the box 10 can be effectively regulated and managed, so that the risk of thermal runaway of the battery 100 is small and the reliability of the battery 100 is high.

[0199] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery, applied to a vehicle, characterized in that: include: The box body comprises a box shell and a box cover, wherein the box shell has an opening, the box cover covers the opening along a first direction, and the box cover is provided with an avoidance portion, wherein the avoidance portion is used to avoid the vehicle beam of the vehicle; A first layer of battery cells and a second layer of battery cells are disposed in the box body and stacked along the first direction, the first layer of battery cells is closer to the box cover than the second layer of battery cells, the first layer of battery cells includes a first battery module and a second battery module located on both sides of the avoidance portion along the second direction, and the first direction and the second direction are perpendicular to each other; A battery management unit is disposed in the box, and the battery management unit is located between the first battery module and the second battery module and is offset from the avoidance portion along the second direction.

2. The battery according to claim 1, characterized in that The avoidance portion includes a first groove and a second groove spaced apart along the second direction, the first groove and the second groove are formed by the box cover being recessed toward the box shell, the first groove and the second groove are respectively used to avoid the two longitudinal beams of the vehicle beam, and the battery management unit is located between the first groove and the second groove.

3. The battery according to claim 2, characterized in that The battery also includes a connector, which is connected to the battery management unit and is used to connect to the vehicle end so that the battery is electrically or fluidically connected to the vehicle body, and the connector is located between the first groove and the second groove.

4. The battery according to claim 1, characterized in that The battery also includes a thermal management component, which includes a first layer of thermal management components and a second layer of thermal management components stacked along the first direction, the first layer of thermal management components includes two thermal management components separated from each other, and the two thermal management components are respectively located on both sides of the battery management unit along the second direction to respectively adjust the temperature of the first battery module and the second battery module, and the second layer of thermal management components is used to adjust the battery cells away from the second layer.

5. The battery according to claim 4, characterized in that The second layer of battery cells includes a third battery module, a fourth battery module and a fifth battery module sequentially arranged along the second direction, and along the first direction, a projection of the first battery module and a projection of the third battery module at least partially overlap, and a projection of the second battery module and a projection of the fifth battery module at least partially overlap; The battery further includes a first partition beam and a second partition beam, wherein the first partition beam is disposed between the third battery module and the fourth battery module, and the second partition beam is disposed between the fourth battery module and the fifth battery module.

6. The battery according to claim 5, characterized in that The first battery module, the second battery module, the third battery module, the fourth battery module and the fifth battery module are all connected to the battery management unit.

7. The battery according to claim 5, characterized in that The thermal management component has a flow channel inside, and the flow channel is used to contain a medium to adjust the temperature of the battery cell; The flow channels inside the two heat management components are respectively communicated with the flow channels inside the second layer of heat management components.

8. The battery according to claim 7, characterized in that The second layer of thermal management components includes a first thermal management part, a second thermal management part and a third thermal management part. The first thermal management part, the second thermal management part and the third thermal management part are respectively arranged corresponding to the third battery module, the fourth battery module and the fifth battery module, and the flow channel inside the first thermal management part, the flow channel inside the second thermal management part and the flow channel inside the third thermal management part are interconnected.

9. The battery according to claim 8, characterized in that The two heat management components, the first heat management unit, the second heat management unit and the third heat management unit are arranged in parallel; or, The two heat management components are arranged in series with the second layer of heat management components.

10. The battery according to claim 8 or 9, characterized in that: The second layer of heat management components includes two plate-like members stacked along the first direction, and the two plate-like members together form a flow channel inside the second layer of heat management components.

11. The battery according to claim 9, characterized in that The second layer of thermal management components has a collecting input flow channel, and the flow channel inlets inside the two thermal management parts, the first thermal management part, the second thermal management part and the third thermal management part are respectively connected to the collecting input flow channel; and / or, The second layer of thermal management components includes a collecting output flow channel, and flow channel outlets inside the two thermal management parts, the first thermal management part, the second thermal management part, and the third thermal management part are respectively communicated with the collecting output flow channel.

12. The battery according to claim 11, characterized in that The two thermal management components include a first thermal management component and a second thermal management component, and the battery also includes a connecting pipe, the first thermal management component and the second thermal management component are respectively connected to the collecting input flow channel through different connecting pipes, and / or the first thermal management component and the second thermal management component are respectively connected to the collecting output flow channel through different connecting pipes.

13. The battery according to claim 12, characterized in that The second layer of thermal management components includes a first current collecting area and a second current collecting area, and the first current collecting area and the second current collecting area are respectively arranged corresponding to the first dividing beam and the second dividing beam; At least a portion of the current collecting input flow channel is located in the first current collecting area, and at least a portion of the current collecting output flow channel is located in the second current collecting area.

14. The battery according to claim 13, characterized in that The first partition beam and the second partition beam are respectively formed with a receiving groove, and the receiving groove is used to embed the connecting pipe.

15. A vehicle, characterized in that: A vehicle body having a vehicle beam; The battery according to any one of claims 1 to 14, wherein the avoidance portion of the battery is arranged corresponding to the vehicle beam.

16. The vehicle according to claim 15, characterized in that Projected along the second direction, the projection of the first layer of battery cells overlaps with at least a portion of the projection of the vehicle beam.

17. The vehicle according to claim 15 or 16, characterized in that Projected along the second direction, the projection of the battery management unit overlaps with at least a portion of the projection of the vehicle beam.

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