CN220065842U - Pipeline connecting assembly, battery box, battery, electric equipment and energy storage equipment - Google Patents

Abstract

The embodiment of the utility model provides a pipeline connection assembly, a battery box body, a battery, electric equipment and energy storage equipment, which can improve the space utilization rate in the battery box body. The pipeline connecting component is arranged on the boundary beam of the battery box body and penetrates through the boundary beam along the thickness direction of the boundary beam, one end of the pipeline connecting component is communicated with the thermal management component of the battery, and the other end of the pipeline connecting component is communicated with the external liquid supply component.

Description

Pipeline connecting assembly, battery box, battery, electric equipment and energy storage equipment

Technical Field

The embodiment of the utility model relates to the technical field of battery production, in particular to a pipeline connecting assembly, a battery box body, a battery, electric equipment and energy storage equipment.

Background

At present, with the continuous development of battery technology, the requirements of vehicle-mounted power supplies, electric automobiles and the like on the energy density of batteries are continuously increased, and further, higher requirements are provided for the space utilization rate of the inside of a battery box body. Therefore, how to improve the space utilization of the battery box is a technical problem to be solved in the art.

Disclosure of Invention

In view of the above, the embodiment of the application provides a pipeline connection assembly, a battery box, a battery, electric equipment and energy storage equipment, which can improve the space utilization rate in the battery box.

In a first aspect, a pipe connection assembly is provided, where the pipe connection assembly is disposed on a side beam of a battery box and penetrates through the side beam along a thickness direction of the side beam, one end of the pipe connection assembly is communicated with a thermal management component of a battery, and the other end of the pipe connection assembly is communicated with an external liquid supply component.

In the embodiment of the application, the pipeline connecting component is arranged on the boundary beam of the battery box body, penetrates through the boundary beam along the thickness direction of the boundary beam, one end of the pipeline connecting component is communicated with the thermal management component of the battery, and the other end of the pipeline connecting component is communicated with the external liquid supply component.

In some implementations, the other end of the tubing connection assembly communicates with an external liquid supply component, the tubing connection assembly comprising: a switching part; the first connecting part is sleeved on the periphery of the switching part, and the switching part is positioned on one side of the first connecting part, which is close to the inside of the battery box body.

In the embodiment of the application, a pipeline connecting component is arranged on a side beam of a battery box body, and penetrates through the side beam along the thickness direction of the side beam, one end of the pipeline connecting component is communicated with a thermal management component of the battery, the other end of the pipeline connecting component is communicated with an external liquid supply component, and the pipeline connecting component comprises: the application relates to a battery box, which comprises a battery box body, a heat management component, a first connecting component, a heat management component and a liquid supply component, wherein the heat management component is arranged on the side beam of the battery box body, the first connecting component is sleeved on the periphery of the heat management component, the heat management component is arranged on one side of the first connecting component, which is close to the inside of the battery box body, and the heat management component is sleeved on the side beam of the battery box body.

In some implementations, the side rail includes a first wall proximate an interior of the battery case, and the thermal management component includes a first current collector proximate the first wall, the first current collector being snap-connected to the adapter component. In this way, in the embodiment of the application, the first current collector is connected with the adapting part in a clamping way, so that the installation and the disassembly of the thermal management part and the pipeline connecting assembly are facilitated.

In some implementations, at least one clamping structure is disposed at one end of the adapting component, which is close to the interior of the battery box, a first connector is disposed at one end of the first current collector, which is close to the adapting component, at least one clamping groove with the same number as the clamping structures is disposed at one end of the first connector, which is far away from the adapting component, the clamping structures are in one-to-one correspondence with the clamping grooves, and the clamping structures are used for being screwed into the clamping grooves to connect the adapting component and the first current collector.

In the embodiment of the application, at least one clamping structure is arranged at one end, close to the inside of the battery box, of the switching component, a first connector is arranged at one end, close to the switching component, of the first current collector, at least one clamping groove, the number of which is the same as that of the clamping structures, is arranged at one end, far away from the switching component, of the first connector, the clamping structures are in one-to-one correspondence with the clamping grooves, and the clamping structures are used for being screwed into the clamping grooves to connect the switching component and the first current collector, so that the clamping connection between the pipeline connection assembly and the thermal management component is realized.

In some implementations, the first joint is a hollow annular structure, and the clamping groove includes an annular groove disposed on an inner circumferential surface of the first joint. In this way, in the embodiment of the application, the first connector is provided with the hollow annular structure, and the inner peripheral surface of the first connector is provided with the annular groove corresponding to the clamping structure at one end of the adapting part, so that the clamping connection between the pipeline connecting assembly and the thermal management part is realized, and the first connector has a simple structure and is easy to process and manufacture.

In some implementations, the inner peripheral surface of the first joint is further provided with a guiding-out structure for guiding the adapting member to slide in or out of the first joint. Thus, in the embodiment of the application, the guiding and disengaging structure is arranged on the inner peripheral surface of the first connector, and the guiding and disengaging structure can be used for guiding the adapting part to slide into or slide out of the first connector, for example, when the adapting part is rotationally clamped and connected with the first current collector, the clamping structure at one end of the adapting part is used for sliding into the first connector through the guiding and disengaging structure, and then the adapting part is rotated to realize the clamping connection between the clamping structure and the clamping groove, so that the adapting part and the first connector are convenient to mount and dismount.

In some implementations, the guiding structure includes at least one concave portion disposed on an inner peripheral surface of the first joint and the same number as the clamping structures, the concave portion penetrates through the first joint along a thickness direction of the side beam, the concave portion corresponds to the clamping structures one by one, and the clamping structures are used for enabling the adapting component to slide in or slide out of the first joint through the concave portion.

In an embodiment of the present application, the guiding and releasing structure may include at least one concave portion disposed on an inner peripheral surface of the first connector and the same number as the clamping structures, the concave portion penetrates through the first connector along a thickness direction of the boundary beam, the concave portion corresponds to the clamping structures one by one, the clamping structures are used for enabling the adapting member to slide into or slide out of the first connector through the concave portion, when the adapting member and the first current collector are rotationally clamped and connected, the clamping structure at one end of the adapting member is used for sliding into the first connector through the concave portion, and then the adapting member and the clamping structure are rotated to achieve clamping connection of the clamping grooves, so that installation and disassembly between the adapting member and the first connector are facilitated.

In some implementations, the piping connection assembly further includes a seal disposed between the adapter component and the first current collector. Thus, in the embodiment of the application, the sealing element is arranged between the switching component and the first current collector, so that the sealing performance between the pipeline connecting component and the heat management component can be effectively improved, and the adverse effect of liquid flowing out from the pipeline connecting component and the heat management component on the battery can be reduced.

In some implementations, the first connection member includes a first body portion and a first extension portion disposed at an outer periphery of the first body portion, the first body portion having a hardness less than a hardness of the first extension portion.

In the embodiment of the application, the first connecting part comprises the first main body part and the first extension part arranged on the periphery of the first main body part, and the hardness of the first main body part is smaller than that of the first extension part, so that the first main body part in the first connecting part can absorb tolerance to a certain extent under the working conditions of transportation, vibration and the like, and meanwhile, the first extension part can enhance the structural strength of the first connecting part, so that the connection stability between the pipeline connecting assembly and the heat management part and the external liquid supply part is improved.

In some implementations, the material of the first body portion includes a thermoplastic elastomer and the material of the first extension portion includes a polydodecyl lactam.

In some implementations, the first connection member is connected to the side rail of the battery box by at least one of: welding, bonding and interference connection. Thus, in the embodiment of the present application, the first connection member and the side beam of the battery box may be connected by at least one of the following connection methods: welding, bonding and interference connection to improve the connection stability between the first connecting part and the boundary beam of the battery box body.

In some implementations, the external liquid supply component and the first connection component are connected by at least one of the following: interference, adhesive, or snap connection. Thus, in the embodiment of the present application, the external liquid supply component and the first connection component may be connected by at least one of the following connection methods: interference connection, bonding or clamping connection to improve the connection stability between the external liquid supply component and the first connecting component.

In some implementations, the material of the transition member includes polyhexamethylene adipamide or fiberglass.

In a second aspect, there is provided a battery box comprising a pipe connection assembly according to any implementation of the first aspect.

In a third aspect, a battery is provided, comprising a battery case according to any implementation of the second aspect.

In a fourth aspect, a powered device is provided, comprising a battery according to any implementation of the third aspect, the battery being configured to provide electrical energy to the powered device.

In some implementations, the powered device may be a vehicle, a vessel, a spacecraft, or the like.

In a fifth aspect, there is provided an energy storage device comprising a battery according to any of the implementations of the third aspect for storing electrical energy for the energy storage device.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a vehicle according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a battery according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a battery cell according to an embodiment of the application.

Fig. 4 is a schematic structural diagram of a battery according to an embodiment of the present application.

Fig. 5 is a schematic cross-sectional view of a pipe connection assembly according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of an adapting unit according to another embodiment of the present application.

Fig. 7 is a schematic structural view of a first joint according to another embodiment of the present application.

Fig. 8 is a schematic cross-sectional view of a first joint according to yet another embodiment of the present application.

Fig. 9 is a schematic cross-sectional view of an adapter component according to an embodiment of the application before being clamped to a first connector.

Fig. 10 is a schematic cross-sectional view of an adapter member according to an embodiment of the application after being clamped with a first connector.

In the drawings, the drawings are not drawn to scale.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of this application belong; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.

In describing embodiments of the present application, it should be noted that the terms "mounted," "connected," and "attached" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example, unless otherwise explicitly indicated and defined; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

In the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, which indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" in the embodiment of the present application generally indicates that the front and rear association objects are in an or relationship.

In the embodiments of the present application, the same reference numerals denote the same components, and detailed descriptions of the same components are omitted in different embodiments for the sake of brevity. It should be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the application shown in the drawings, as well as the overall thickness, length, width, etc. dimensions of the integrated device, are merely illustrative and should not be construed as limiting the application in any way.

A battery generally refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery may include a battery module or a battery pack, or the like. Typically, the battery also includes a battery housing for enclosing one or more battery cells. The battery box body can avoid that liquid or other foreign matters influence the charging or discharging of the battery monomers.

In some implementations, the battery cells may include lithium ion batteries, lithium sulfur batteries, sodium lithium ion batteries, sodium ion batteries, or magnesium ion batteries, and the like, as embodiments of the application are not limited in this respect. Typically, the battery cells may also be referred to as cells. The battery cells may be in the shape of cylinders, flat bodies, rectangular solids, or other regular or irregular shapes. The technical scheme of the embodiment of the application can be applied to battery cells with any shape, in particular to cylindrical battery cells.

The battery cell comprises an electrode assembly and electrolyte, wherein the electrode assembly consists of a positive plate, a negative plate and a separation membrane. The battery cell mainly relies on metal ions to move between the positive and negative electrode plates to operate. The positive plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the current collector without the positive electrode active material layer protrudes out of the current collector coated with the positive electrode active material layer, and the current collector without the positive electrode active material layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode sheet comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the current collector without the negative electrode active material layer protrudes out of the current collector with the coated negative electrode active material layer, and the current collector without the negative electrode active material layer is used as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the high current is passed without fusing, the number of positive electrode lugs is multiple and stacked together, and the number of negative electrode lugs is multiple and stacked together. The material of the separator may be polypropylene (PP) or Polyethylene (PE). In addition, the electrode assembly may be a roll-to-roll structure or a lamination structure, and embodiments of the present application are not limited thereto.

In some implementations, the battery cell includes an end cap on which an electrode terminal of the battery cell is disposed, and an insulating member is disposed between the end cap and the electrode terminal to ensure insulation between the end cap and the electrode terminal, in addition to the electrode assembly. The electrode terminals are electrically connected with the tabs of the electrode assembly through connection members.

In the field of battery technology, the temperature cannot have a small influence on the battery, regardless of the shape of the battery. The temperature difference will affect the safety, life, function, performance and the like of the power battery, and the power battery is over or under in terms of thermal runaway, serious decay of life, limitation of charge and discharge and the like, so that in order to keep the power battery working within a reasonable temperature range, the temperature of the battery is generally required to be regulated by means of a battery thermal management system in actual use. Depending on the heat transfer medium, battery thermal management systems may be classified into air cooling systems, liquid cooling systems, heat pipe cooling systems, phase change cooling systems, and the like. The liquid cooling system has the advantages of better cooling effect than the air cooling system, lower cost than the heat pipe cooling system and the phase change cooling system, stability and high efficiency, and is widely applied.

The liquid cooling system is also called as a liquid cooling system, and the flow of the cooling liquid in the battery system is completed by using a liquid pump and a liquid cooling pipeline by using the cooling liquid as a heat exchange carrier and is divided into direct contact type and indirect contact type. Direct contact cooling is where the battery pack is immersed directly in a cooling liquid; the indirect contact cooling is to arrange a liquid cooling plate in the battery pack, directly contact with the battery cells in the battery pack through the liquid cooling plate, and then exchange heat, so that the liquid in the liquid cooling plate takes away the heat emitted by the battery cells. Specifically, two sides of the battery module are respectively provided with a liquid cooling plate, so that the plate surfaces of the liquid cooling plates are contacted with the side surfaces of the battery monomers in the battery module, two adjacent liquid cooling plates are communicated through a connecting pipe to form a plurality of parallel liquid cooling plates, and then the parallel liquid cooling plates are communicated with an external liquid supply system through a liquid inlet pipe and a liquid discharge pipe. In the use, external liquid supply part provides the coolant liquid to parallelly connected liquid way through the feed liquor pipe, and later the coolant liquid gets into each liquid cooling board through feed liquor pipe and connecting pipe, and the rethread flows in the liquid cooling board and takes away the heat that the battery monomer gives off, realizes the purpose for the battery monomer cooling.

At present, with the continuous development of battery technology, the energy density requirements of a vehicle-mounted power supply, an electric automobile and the like on a battery are not increased, and further, the space utilization rate of a battery box body is required to be higher. In general, the battery is cooled by water cooling, in which case a pipe space for connecting the thermal management component and an external liquid supply system outside the battery box is reserved in the battery box, but the space utilization rate of the battery box is reduced due to the existence of the pipe space, so that the energy density of the battery is affected. Secondly, if the current collector at one end of the thermal management component near the side beam of the battery box is directly connected with the flange outside the battery box, the current collector is connected in a rigid manner, so that the deviation is difficult to absorb when the battery module is installed, and the battery module is difficult to install.

Therefore, how to improve the space utilization of the battery box is a technical problem to be solved in the art.

In view of this, an embodiment of the present application provides a pipe connection assembly disposed on a side beam of a battery case and penetrating through the side beam along a thickness direction of the side beam, wherein one end of the pipe connection assembly is connected to a thermal management component of the battery, and the other end of the pipe connection assembly is connected to an external liquid supply component. In this way, in the embodiment of the application, compared with the technical scheme that the pipeline space for communicating the thermal management component and the external liquid supply component is reserved in the battery box in the prior art, the pipeline connection component is arranged on the boundary beam of the battery box and penetrates through the boundary beam along the thickness direction of the boundary beam, so that the space in the battery box is not required to be occupied, the space utilization rate in the battery box can be obviously improved, and the energy density of the battery is further improved.

The technical scheme described by the embodiment of the application is suitable for various electric equipment using batteries.

It should be understood that the electrical devices in embodiments of the present application include, but are not limited to, vehicles, cell phones, portable devices, notebook computers, boats, spacecraft, electric toys, electric tools, and the like. The vehicle can be a fuel oil vehicle, a fuel gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle or a range-extended vehicle; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others.

For convenience of explanation, the following embodiments take electric equipment as an example of a vehicle.

For example, as shown in fig. 1, a schematic structural diagram of a vehicle 1 according to an embodiment of the present application is provided, where the vehicle 1 may be a fuel-oil vehicle, a gas-fired vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended range vehicle. The vehicle 1 may have a motor 40, a controller 30 and a battery 10 inside, the controller 30 being configured to control the battery 10 to supply power to the motor 40. For example, the battery 10 may be provided at the bottom or the head or the tail of the vehicle 1. The battery 10 may be used for power supply of the vehicle 1, for example, the battery 10 may be used as an operating power source for the vehicle 1, for circuitry of the vehicle 1, and for example, the battery 10 may be used for operating power requirements at start-up, navigation and operation of the vehicle 1. In some implementations of the application, the battery 10 may not only serve as an operating power source for the vehicle 1, but also as a driving power source for the vehicle 1, instead of or in part instead of fuel oil or natural gas, to provide driving power for the vehicle 1.

In order to meet different power requirements, the battery 10 in the embodiment of the present application may include at least one battery cell group, where the battery cell group includes a plurality of battery cells, and the plurality of battery cells may be electrically connected in series or parallel or in series-parallel to form the battery 10, where series-parallel refers to a mixture of series and parallel. The battery 10 may also be referred to as a battery pack. For example, a plurality of battery cells may be first assembled into a battery module by series connection or parallel connection or series-parallel connection, and then assembled into the battery 10 by series connection or parallel connection or series-parallel connection. That is, a plurality of battery cells may directly constitute the battery 10, or may constitute the battery module first and then the battery module may constitute the battery 10.

In some implementations, the battery 10 may include a plurality of battery cells. For example, as shown in fig. 2, a battery 10 according to an embodiment of the present application may include a plurality of battery cells 20. The battery 10 may further include a battery case 11, wherein the battery case 11 has a hollow structure, and a plurality of battery cells 20 are accommodated in the battery case 11. For example, a plurality of battery cells 20 are connected in parallel or in series-parallel combination with each other and then placed in the battery case 11.

In some implementations, the battery 10 may also include other structures, which are not described in detail herein. For example, the battery 10 may further include a bus member for making electrical connection between the plurality of battery cells 20, such as parallel or series-parallel connection. Specifically, the bus member may realize electrical connection between the battery cells 20 by connecting electrode terminals of the battery cells 20. Further, the bus member may be fixed to the electrode terminals of the battery cells 20 by welding. The electric power of the plurality of battery cells 20 may be further led out through the battery case 11 by the conductive mechanism. Alternatively, the conductive means may also belong to the bus bar member.

In the embodiment of the present application, the number of the battery cells 20 may be set to any value according to different power requirements. The plurality of battery cells 20 may be connected in series, parallel, or series-parallel to achieve a larger capacity or power. Since the number of battery cells 20 included in each battery 10 may be large, the battery cells 20 may be arranged in groups for easy installation, and each group of battery cells 20 constitutes a battery module. The number of battery cells 20 included in the battery module is not limited, and may be set according to requirements. The battery 10 may include a plurality of battery modules that may be connected in series, parallel, or series-parallel.

As shown in fig. 3, a schematic structure of a battery cell 20 according to an embodiment of the present application, the battery cell 20 includes one or more electrode assemblies 22, a case 211, and a cap plate 212. The housing 211 and the cover 212 form a case or battery compartment 21. The walls of the case 211 and the walls of the cover 212 are referred to as the walls of the battery cells 20, wherein for a rectangular parallelepiped type battery cell 20, the walls of the case 211 include a bottom wall and four side walls. The case 211 is determined according to the shape of the combined one or more electrode assemblies 22, for example, the case 211 may be a hollow rectangular parallelepiped or square or cylindrical body, and one face of the case 211 has an opening so that one or more electrode assemblies 22 may be placed in the case 211. For example, when the housing 211 is a hollow rectangular parallelepiped or square, one of the planes of the housing 211 is an opening surface, i.e., the plane has no wall body so that the inside and outside of the housing 211 communicate. When the housing 211 may be a hollow cylinder, the end surface of the housing 211 is an open surface, i.e., the end surface has no wall body so that the inside and outside of the housing 211 communicate. The cap plate 212 covers the opening and is connected with the case 211 to form a closed cavity in which the electrode assembly 22 is placed. The housing 211 is filled with an electrolyte, such as an electrolyte solution.

The battery cell 20 may further include two electrode terminals 214, and the two electrode terminals 214 may be disposed on the cap plate 212. The cap plate 212 is generally in the shape of a flat plate, and two electrode terminals 214 are fixed to the flat plate surface of the cap plate 212, the two electrode terminals 214 being a positive electrode terminal 214a and a negative electrode terminal 214b, respectively. One connection member, or alternatively referred to as a current collecting member, is provided for each electrode terminal 214, which is located between the cap plate 212 and the electrode assembly 22, for electrically connecting the electrode assembly 22 and the electrode terminal 214.

As shown in fig. 3, each electrode assembly 22 has a first tab 221a and a second tab 222a. The polarities of the first tab 221a and the second tab 222a are opposite. For example, when the first tab 221a is a positive tab, the second tab 222a is a negative tab.

In the battery cell 20, the electrode assemblies 22 may be provided in a single unit, or in a plurality, according to actual use requirements, and as shown in fig. 3, 2 individual electrode assemblies 22 are provided in the battery cell 20.

A pressure release mechanism 213 may also be provided on the battery cell 20. The pressure release mechanism 213 is used to actuate to release the internal pressure or temperature of the battery cell 20 when the internal pressure or temperature reaches a threshold.

The pressure relief mechanism 213 may be a variety of possible pressure relief structures. For example, the pressure release mechanism 213 may be a temperature-sensitive pressure release mechanism configured to be able to melt when the internal temperature of the battery cell 20 provided with the pressure release mechanism 213 reaches a threshold value; and/or the pressure relief mechanism 213 may be a pressure sensitive pressure relief mechanism configured to rupture when the internal air pressure of the battery cell 20 provided with the pressure relief mechanism 213 reaches a threshold value.

Fig. 4 shows a schematic structural diagram of a battery 10 according to an embodiment of the present application. It should be understood that, as shown in fig. 4, the direction X may be the length direction of the battery 10, and the direction X is perpendicular to the direction Y and the direction Z; the direction Y may be a width direction of the battery 10, the direction Y being perpendicular to the direction X and the direction Z; the direction Z may be a height direction of the battery 10, and the direction Z is perpendicular to the direction X and the direction Y.

As shown in fig. 4, the battery 10 includes a battery cell 20, a side rail 510, and a thermal management member 530. The plurality of battery cells 20 may be connected in series, or in parallel, and the series-parallel connection refers to that the plurality of battery cells 20 are connected in series or in parallel. Illustratively, the battery 10 includes four side rails 510, the four side rails 510 being joined end-to-end to form a receiving space for receiving a plurality of battery cells 20. The battery 10 may also include other structures, for example, the battery 10 may also include a bus member for making electrical connection between the plurality of battery cells 20. Each battery cell 20 may be a secondary battery or a primary battery; but also lithium sulfur batteries, sodium ion batteries or magnesium ion batteries. Also for example, the battery cells 20 may be cylindrical, flat, rectangular, or other shapes, etc.

It should be appreciated that the thermal management component 530 in embodiments of the present application may be used to cool or warm the battery cells 20 to make the temperature of the battery 10 relatively stable and to improve the operating efficiency of the battery 10. In particular, the thermal management component 530 in embodiments of the present application may contain a fluid or solid-liquid phase change material to regulate the temperature of the plurality of cells 10, or the thermal management component 530 may include flow channels that may be used to contain a fluid or solid-liquid phase change material. The fluid may be a liquid or a gas, the solid-liquid phase change material is in a solid state, and the fluid may become a liquid after absorbing heat, and the temperature adjustment means heating or cooling the plurality of battery cells 20. In the case of cooling or lowering the temperature of the battery cells 20, the thermal management member 530 serves to contain a cooling fluid or a solid-liquid phase change material to lower the temperature of the plurality of battery cells 20, and at this time, the thermal management member 530 may also be referred to as a cooling member, a cooling system, a cooling plate, or the like, and the fluid contained therein may also be referred to as a cooling medium or a cooling fluid, and more specifically, may be referred to as a cooling liquid or a cooling gas. In addition, the thermal management component 530 in the embodiment of the present application may also be used for heating to heat up the plurality of battery cells 20, which is not limited in the embodiment of the present application. Alternatively, the fluid may be circulated to achieve better temperature regulation. Alternatively, the fluid may be water, a mixture of water and ethylene glycol, or air.

It should also be understood that the battery 10 is provided with a plurality of battery cells 20, the plurality of battery cells 20 are arranged in a two-dimensional array, and gaps exist between two adjacent rows of battery cells 20. The thermal management part 530 includes a plurality of liquid cooling plates and a plurality of current collectors. Wherein, a plurality of liquid cooling plates are arranged side by side and at intervals. The two adjacent liquid cooling plates are communicated through a pipeline. In the use process, a liquid cooling plate is respectively arranged at two sides of each row of the battery cells 20, and the liquid cooling plates are in heat conduction contact with the surfaces of the battery cells 20. And then two adjacent liquid cooling plates are communicated through a pipeline. Finally, the combined liquid path formed by combining all the liquid cooling plates and the current collectors is communicated with the liquid inlet pipe and the liquid outlet pipe of the external liquid supply component 520.

It should also be appreciated that the connection manner of the thermal management component 530 to the battery cell 20 is not limited in this embodiment, and the thermal management component 530 may be fixedly connected to the battery cell 20 by an adhesive.

Fig. 5 shows a schematic cross-sectional view of a tubing connection assembly 60 provided in accordance with an embodiment of the present application.

In some implementations, as shown in fig. 5, the pipe connection assembly 60 is disposed on a side rail 510 of the battery case 11 and penetrates the side rail 510 along a thickness direction of the side rail 510, one end of the pipe connection assembly 60 communicates with a thermal management component 530 of the battery 10, and the other end of the pipe connection assembly 60 communicates with an external liquid supply component 520.

It should also be appreciated that the shape of the tubing connection assembly 60 in embodiments of the present application may be configured according to actual needs, and that the tubing connection assembly 60 may be, for example, cylindrical, oval or polygonal.

In the embodiment of the application, the pipe connection assembly 60 is arranged on the side beam 510 of the battery box 11, and the pipe connection assembly 60 penetrates through the side beam 510 along the thickness direction of the side beam 510, one end of the pipe connection assembly 60 is communicated with the thermal management component 530 of the battery 10, and the other end of the pipe connection assembly 60 is communicated with the external liquid supply component 520.

In some implementations, the tubing connection assembly 60 includes: an adapter 610; the first connection member 620 is sleeved on the outer circumference of the adapting member 610, and the adapting member 610 is positioned at one side of the first connection member 620 near the inside of the battery case 11.

In the embodiment of the present application, by providing the piping connection assembly 60 on the side rail 510 of the battery case 11, and the piping connection assembly 60 penetrates the side rail 510 along the thickness direction of the side rail 510, one end of the piping connection assembly 60 is communicated with the thermal management component 530 of the battery 10, the other end of the piping connection assembly 60 is communicated with the external liquid supply component 520, and the piping connection assembly 60 comprises: the application provides a transfer component 610 and a first connecting component 620, wherein the first connecting component 620 is sleeved on the periphery of the transfer component 610, the transfer component 610 is positioned on one side of the first connecting component 620, which is close to the inside of the battery box 11, compared with the technical scheme that a pipeline space for communicating a thermal management component 530 and an external liquid supply component 520 is reserved in the inside of the battery box 11 in the prior art, the pipeline connecting component 60 is arranged on a boundary beam 510 of the battery box 11, and the pipeline connecting component 60 penetrates through the boundary beam 510 along the thickness direction of the boundary beam 510, so that the space inside the battery box 11 is not occupied, the space utilization rate inside the battery box 11 can be remarkably improved, and the energy density of the battery 10 is further improved.

In some implementations, the side beam 510 includes a first wall near the interior of the battery case 11, the thermal management component 530 includes a first current collector 531 near the first wall, and the adapter component 610 is connected to the first current collector 531 in a snap-fit manner. Thus, in the embodiment of the present application, the first current collector 531 is connected to the adapting unit 610 in a clamping manner, so as to facilitate the installation and the removal of the thermal management unit 530 from the pipe connection assembly 60. For example, the first current collector 531 and the adapting unit 610 may be connected by a rotation clamping connection.

Fig. 6 shows a schematic structural diagram of an adapting unit 610 according to an embodiment of the application. Fig. 7 shows a schematic structural diagram of a first connector 532 according to an embodiment of the present application, and fig. 8 shows a schematic sectional diagram of the first connector 532 according to an embodiment of the present application. Illustratively, this fig. 8 may be a schematic cross-sectional view of the first joint 532 shown in fig. 7.

In some implementations, as shown in fig. 6 to 8, at least one clamping structure 611 is disposed at an end of the adapting member 610 near the interior of the battery case 11, a first connector 532 is disposed at an end of the first current collector 531 near the adapting member 610, at least one clamping groove 540 having the same number as the clamping structures 611 is disposed at an end of the first connector 532 far from the adapting member 610, the clamping structures 611 are in one-to-one correspondence with the clamping grooves 540, and the clamping structures 611 are used for screwing into the clamping grooves 540 to connect the adapting member 610 and the first current collector 531.

It should be understood that, in the embodiment of the present application, the shape of the clamping structure 611 may be set according to actual needs, and the clamping structure 611 may be an annular protrusion structure, for example. It should also be understood that the one-to-one correspondence between the clamping structure 611 and the clamping groove 540 in the embodiment of the present application means that the clamping structure 611 and the clamping groove 540 are matched with each other in structure, for example, when the clamping structure 611 is a protruding structure, the clamping groove 540 may be configured as a groove matched with the clamping structure 611, and at least part of the protruding structure is accommodated in the groove.

In the embodiment of the application, at least one clamping structure 611 is disposed at one end of the adapting member 610 near the inside of the battery case 11, a first connector 532 is disposed at one end of the first current collector 531 near the adapting member 610, at least one clamping groove 540 with the same number as the clamping structures 611 is disposed at one end of the first connector 532 far away from the adapting member 610, the clamping structures 611 are in one-to-one correspondence with the clamping grooves 540, and the clamping structures 611 are used for screwing into the clamping grooves 540 to connect the adapting member 610 and the first current collector 531, so that the clamping connection between the pipeline connection assembly 60 and the thermal management component 530 is realized.

In some implementations, as shown in fig. 7 and 8, the first connector 532 is a hollow annular structure, and the clamping groove 540 includes an annular groove provided on an inner circumferential surface of the first connector 532. Thus, in the embodiment of the present application, the first connector 532 is configured as a hollow annular structure, and the inner circumferential surface of the first connector 532 is provided with an annular groove corresponding to the clamping structure 611 at one end of the adapting component 610, so as to implement the clamping connection between the pipeline connecting assembly 60 and the thermal management component 530, and the first connector 532 has a simple structure and is easy to process and manufacture.

In some implementations, as shown in fig. 7 and 8, the inner circumferential surface of the first joint 532 is further provided with a guide-out structure for guiding the adapter member 610 to slide in or out of the first joint 532.

It should be appreciated that in embodiments of the present application, the shape of the guiding and releasing structure may be configured according to the shape of the clamping structure 611, and, for example, when the clamping structure 611 is a protruding structure, the guiding and releasing structure may be configured as a through slot matching the clamping structure 611, and the protruding structure may slide into or out of the first connector 532 along the through slot.

In the embodiment of the present application, by providing the guiding and releasing structure on the inner peripheral surface of the first connector 532, the guiding and releasing structure can be used to guide the adapting member 610 to slide into or slide out of the first connector 532, for example, when the adapting member 610 is rotationally clamped with the first current collector 531, the clamping structure at one end of the adapting member 610 is used to slide into the first connector 532 through the guiding and releasing structure, and then rotate to realize the clamping connection between the clamping structure 611 and the clamping groove 540, so as to facilitate the installation and the disassembly between the adapting member 610 and the first connector 532.

In some implementations, as shown in fig. 7 and 8, the guiding structure includes at least one concave portion 550 disposed on the inner peripheral surface of the first joint 532 and the same number as the clamping structures 611, the concave portion 550 penetrates through the first joint 532 along the thickness direction of the boundary beam 510, the concave portion 550 corresponds to the clamping structures 611 one by one, and the clamping structures 611 are used for sliding the adapting member 610 into or out of the first joint 532 through the concave portion 550.

Fig. 9 is a schematic cross-sectional view of an adapter 610 according to an embodiment of the application before being clamped to a first connector 532. Fig. 10 is a schematic cross-sectional view of the adaptor member 610 according to an embodiment of the application after being clamped with the first connector 532. As shown in fig. 9 and 10, when the adapting member 610 is rotationally engaged with the first joint 532, the engaging structure 611 of the adapting member 610 near one end of the first joint 532 may move along the corresponding concave portion 550 toward the first joint 532, and after reaching the predetermined position, the adapting member 610 is rotated to engage the engaging structure 611 into the engaging groove 540, so as to connect the adapting member 610 and the first joint 532, thereby realizing the engaging connection between the pipe connection assembly 60 and the thermal management component 530.

It should be understood that, in the embodiment of the present application, the shape of the inner concave portion 550 may be set according to actual needs, and, illustratively, the shape of the inner concave portion 550 may be set in a matching manner according to the shape of the clamping structure 611, when the clamping structure 611 is a protruding structure, the inner concave portion 550 may be set as a through groove matching with the protruding structure, at least part of the protruding structure is accommodated in the through groove, and the protruding structure can slide in or slide out on the through groove.

In the embodiment of the present application, the guiding and releasing structure may include at least one concave portion 550 disposed on the inner peripheral surface of the first connector 532 and the same number as the clamping structures 611, the concave portion 550 penetrates through the first connector 532 along the thickness direction of the boundary beam 510, the concave portion 550 corresponds to the clamping structures 611 one by one, the clamping structures 611 are used for sliding the adapting member 610 into or out of the first connector 532 through the concave portion 550, when the adapting member 610 is rotationally clamped to the first current collector 531, the clamping structures 611 at one end of the adapting member 610 are used for sliding into the first connector 532 through the concave portion 550 and then rotating to realize the clamping connection between the clamping structures 611 and the clamping grooves 540, so as to facilitate the installation and the disassembly between the adapting member 610 and the first connector 532.

In some implementations, the pipe connection assembly 60 further includes a seal disposed between the adapter member 610 and the first current collector 531.

It should be appreciated that in embodiments of the present application, the seal may be provided on the adapter member 610. Illustratively, the seal may be provided on the outer circumferential wall of the first joint 532 of the first current collector 531 to improve the sealing performance of the connection between the first current collector 531 and the pipe connection assembly 60.

In some implementations, a distance between the first current collector 531 and the first wall is greater than or equal to 0mm in a thickness direction of the boundary beam 510.

It should be understood that, in the embodiment of the present application, the first current collector 531 is located at one or both ends of the thermal management component 530 along the width direction of the battery 10, the first current collector 531 is used to communicate with the external liquid supply component 520, and the heat exchange medium flowing through the pipe can enter the interior of the thermal management component 530 through the first current collector 531, so as to achieve temperature regulation of the battery cells 20.

In the embodiment of the present application, the side rail 510 includes a first wall adjacent to the inside of the battery case 11, the thermal management component 530 includes a first current collector 531 adjacent to the first wall, and in the thickness direction of the side rail 510, by setting the distance between the first current collector 531 and the first wall to be greater than or equal to 0mm, when the battery module including the thermal management component 530 is installed in the battery case 11, it is generally installed in the thickness direction of the battery case 11, so that the risk of collision between the first current collector 531 and the first wall during the installation process can be reduced, thereby facilitating the installation and removal between the battery case 11 and the battery module.

It should also be appreciated that in embodiments of the present application, the materials of the seal include, but are not limited to: rubber, polytetrafluoroethylene, polyethylene, polypropylene, polyurethane.

In the embodiment of the present application, by providing the sealing member between the adapting unit 610 and the first current collector 531, the sealing performance between the pipe connection assembly 60 and the thermal management unit 530 can be effectively improved, so as to reduce the adverse effect of the liquid flowing out through between the pipe connection assembly 60 and the thermal management unit 530 on the battery.

In some implementations, the first connection part 620 includes a first body part and a first extension part disposed at an outer circumference of the first body part, the first body part having a hardness less than that of the first extension part. Thus, in the embodiment of the present application, the first connecting member 620 includes a first main body portion and a first extension portion disposed on an outer periphery of the first main body portion, and the hardness of the first main body portion is smaller than that of the first extension portion, so that the first connecting member 620 can absorb tolerance to a certain extent under the working conditions of transportation, vibration, etc., and meanwhile, the first extension portion can enhance the structural strength of the first connecting member 620, so as to improve the connection stability between the pipeline connecting assembly 60 and the thermal management member 530 and the external liquid supply member 520.

In some implementations, the material of the first body portion includes a thermoplastic elastomer and the material of the first extension portion includes a polydodecyl lactam.

In some implementations, the first connection member 620 is connected to the side beam 510 of the battery case 11 by at least one of the following connection methods: welding, bonding and interference connection.

It should be understood that, in the embodiment of the present application, the interference connection means that the tight connection between the two members is achieved by a certain pressure or friction force between the two members, and for example, a through hole penetrating the side rail 510 may be provided on the side rail 510 of the battery case 11 in the direction X, and the connection stability between the first connection member 620 and the side rail 510 of the battery case 11 may be improved by setting the inner diameter of the through hole to be smaller than the outer diameter of the first connection member 620, and when the first connection member 620 is pressed into the inner circumferential wall of the through hole, the first connection member 620 is tightly engaged with the through hole due to the existence of the interference.

In an embodiment of the present application, the first connection member 620 and the side beam 510 of the battery case 11 may be connected by at least one of the following connection methods: welding, bonding, and interference connection to improve connection stability between the first connection member 620 and the side rail 510 of the battery case 11.

In some implementations, the external liquid supply component 520 is connected to the first connection component 620 by at least one of: interference, adhesive, or snap connection. For example, when the external liquid supply member 520 is in interference connection with the first connection member 620, the external liquid supply member 520 and the first connection member 620 are tightly matched due to the interference when the external liquid supply member 520 is pressed into the inner peripheral wall of the first connection member 620 by setting the external diameter of at least part of the structure of the external liquid supply member 520 near the end of the first connection member 620 to be larger than the internal diameter of the first connection member 620, so that the connection stability between the external liquid supply member 520 and the first connection member 620 is improved.

In an embodiment of the present application, the external liquid supply unit 520 and the first connection unit 620 may be connected by at least one of the following connection manners: an interference, adhesive, or snap connection may be used to improve the stability of the connection between the external liquid supply member 520 and the first connection member 620.

In some implementations, the material of the transition member 610 includes polyhexamethylene adipamide or fiberglass.

The embodiment of the application also provides a battery box body, which comprises the battery box body 11 in any embodiment.

The embodiment of the application also provides a battery, which comprises the battery cell 20 in any embodiment.

The embodiment of the application also provides electric equipment, which comprises the battery 10 in any embodiment, wherein the battery 10 is used for providing electric energy for the electric equipment. Specifically, the electric device may be the vehicle 1 shown in fig. 1, or any electric device using the battery 10.

The embodiment of the application also provides an energy storage device, which comprises the battery 10 in any of the above embodiments, wherein the battery 10 is used for storing electric energy for the energy storage device.

Referring again to fig. 5 to 10 above, there is provided a pipe connection assembly 60 provided on a side rail 510 of a battery case 11 and penetrating the side rail 510 in a thickness direction of the side rail 510, one end of the pipe connection assembly 60 being in communication with a thermal management part 530 of the battery 10, the other end of the pipe connection assembly 60 being in communication with an external liquid supply part 520, the pipe connection assembly 60 comprising: an adapter 610; the first connection member 620 is sleeved on the outer circumference of the adapting member 610, and the adapting member 610 is positioned at one side of the first connection member 620 near the inside of the battery case 11. At least one clamping structure 611 is disposed at one end of the adapting member 610 near the inside of the battery case 11, a first connector 532 is disposed at one end of the first current collector 531 near the adapting member 610, at least one clamping groove 540 with the same number as the clamping structures 611 is disposed at one end of the first connector 532 far away from the adapting member 610, the clamping structures 611 are in one-to-one correspondence with the clamping grooves 540, and the clamping structures 611 are used for being screwed into the clamping grooves 540 to connect the adapting member 610 and the first current collector 531. The inner circumferential surface of the first connector 532 is further provided with a guiding structure for guiding the adaptor member 610 to slide into or out of the first connector 532. The guiding and releasing structure includes at least one concave portion 550 disposed on the inner peripheral surface of the first joint 532 and the same number as the clamping structures 611, the concave portion 550 penetrates the first joint 532 along the thickness direction of the boundary beam 510, the concave portion 550 corresponds to the clamping structures 611 one by one, and the clamping structures 611 are used for enabling the adapting member 610 to slide into or slide out of the first joint 532 through the concave portion 550.

While the application has been described with reference to the above embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the embodiments of the application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (17)

1. The utility model provides a pipeline coupling assembling, its characterized in that, pipeline coupling assembling sets up on boundary beam (510) of battery box (11) and follows the thickness direction of boundary beam (510) runs through boundary beam (510), pipeline coupling assembling's one end and heat management part (530) intercommunication of battery (10), pipeline coupling assembling's the other end and external confession liquid part (520) intercommunication.

2. The plumbing connection assembly of claim 1, wherein the plumbing connection assembly comprises:

an adapter member (610);

and the first connecting part (620), the first connecting part (620) is sleeved on the periphery of the switching part (610), and the switching part (610) is positioned on one side of the first connecting part (620) close to the inside of the battery box body (11).

3. The pipe connection assembly according to claim 2, wherein the side rail (510) includes a first wall adjacent to an interior of the battery case (11), the thermal management component (530) includes a first current collector (531) adjacent to the first wall, and the adapter component (610) is coupled to the first current collector (531) by a snap fit connection.

4. A pipe connection assembly according to claim 3, wherein one end of the adapting member (610) close to the interior of the battery box (11) is provided with at least one clamping structure (611), one end of the first current collector (531) close to the adapting member (610) is provided with a first joint (532), one end of the first joint (532) far away from the adapting member (610) is provided with at least one clamping groove (540) with the same number as the clamping structures (611), the clamping structures (611) are in one-to-one correspondence with the clamping grooves (540), and the clamping structures (611) are used for being screwed into the clamping grooves (540) to connect the adapting member (610) with the first current collector (531).

5. The pipe coupling assembly according to claim 4, wherein said first fitting (532) is a hollow annular structure and said clamping groove (540) comprises an annular groove provided on an inner peripheral surface of said first fitting.

6. The pipe connection assembly according to claim 4, wherein the inner circumferential surface of the first joint (532) is further provided with a guide-off structure for guiding the adapter member (610) to slide in or out of the first joint (532).

7. The pipe connection assembly according to claim 6, wherein the guiding and releasing structure comprises at least one concave portion (550) which is arranged on the inner peripheral surface of the first joint (532) and has the same number as the clamping structures (611), the concave portion (550) penetrates through the first joint (532) along the thickness direction of the side beam (510), the concave portions (550) are in one-to-one correspondence with the clamping structures (611), and the clamping structures (611) are used for enabling the adapting part (610) to slide into or slide out of the first joint (532) through the concave portions (550).

8. A pipe connection assembly according to claim 3, further comprising a seal arranged between the adapter member (610) and the first current collector (531).

9. The pipe connection assembly according to claim 2, wherein the first connection member (620) includes a first main body portion and a first extension portion provided at an outer periphery of the first main body portion, the first main body portion having a hardness less than that of the first extension portion.

10. The line connection assembly of claim 9 wherein the material of the first body portion comprises a thermoplastic elastomer and the material of the first extension portion comprises a polydodecyl amide.

11. The pipe connection assembly according to claim 2, wherein the first connection member (620) is connected with the side rail (510) of the battery box (11) by at least one of the following connection means: welding, bonding and interference connection.

12. The line connection assembly of claim 2, wherein the external fluid supply member (520) is connected to the first connection member (620) by at least one of: interference connection, bonding and clamping connection.

13. The pipe connection assembly according to any one of claims 2 to 12, wherein the material of the adapter member (610) comprises polyhexamethylene adipamide or glass fibre.

14. A battery compartment comprising a conduit connection assembly according to any one of claims 1 to 13.

15. A battery, comprising:

a battery cell;

the battery compartment of claim 14, the battery compartment for housing the battery cells.

16. A powered device, comprising: the battery of claim 15, the battery to provide electrical energy to the powered device.

17. An energy storage device, comprising: the battery of claim 15, for storing electrical energy for the energy storage device.