Battery device, electric device, and communication pipe

Abstract

A battery device, an electric device and a communication pipe, the battery device comprising: a battery cell; a plurality of heat exchange plates, the heat exchange plates being attached to one side surface of the battery cell to exchange heat with the battery cell, the heat exchange plates having connectors; a communication pipe, the communication pipe being located between two adjacent heat exchange plates, and the end of the communication pipe being adapted to be connected with the connectors, wherein, in the height direction of the battery device, the maximum size of the communication pipe is X1; in the length direction of the heat exchange plate, the maximum size of the communication pipe is Y1, satisfying: X1>Y1. In the above technical solution, by reducing the size of the communication pipe along the length direction of the heat exchange plate, the occupied space of the communication pipe along the length direction of the heat exchange plate in the battery device can be reduced, which is beneficial to improve the energy density of the battery device, so that the endurance of the vehicle powered by the battery device is improved, and the demand of the user for long endurance of the vehicle is met.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a battery device, an electrical appliance, and a connecting pipe. Background Technology

[0002] In related technologies, the connecting pipe of the battery device occupies too much space in the length direction of the heat exchange plate, which affects the energy density of the battery device and results in poor range of electrical equipment such as vehicles, making it difficult to meet users' demand for long vehicle range. Utility Model Content

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, embodiments of this invention provide a battery device, an electrical device, and a connecting pipe, which can reduce the space occupied by the connecting pipe of the battery device along the length of the heat exchange plate, increase the energy density of the battery device, improve the range of electrical devices such as vehicles, and better meet users' needs for longer vehicle range.

[0004] In a first aspect, this utility model provides a battery device, comprising: a battery cell; a plurality of heat exchange plates, wherein the heat exchange plates are attached to one side surface of the battery cell for heat exchange with the battery cell, and the heat exchange plates have connecting members; a connecting pipe, wherein the connecting pipe is located between two adjacent heat exchange plates, and the end of the connecting pipe is adapted to be connected to the connecting member, wherein, in the height direction of the battery device, the maximum dimension of the connecting pipe is X1; and in the length direction of the heat exchange plates, the maximum dimension of the connecting pipe is Y1, satisfying: X1 > Y1.

[0005] In the above technical solution, by reducing the size of the connecting pipe along the length of the heat exchange plate, the space occupied by the connecting pipe in the battery device along the length of the heat exchange plate can be reduced, which is conducive to improving the energy density of the battery device and improving the range of the vehicle powered by the battery device of this application, thus meeting the user's demand for long vehicle range.

[0006] In some embodiments, one of the connecting pipe and the connector is provided with a reinforcing portion, the reinforcing portion being located on one side of the connecting pipe or the connector in the length direction of the heat exchange plate, and the other of the connecting pipe and the connector being adapted to fit tightly against the reinforcing portion.

[0007] In the above technical solution, while changing the size and shape of the connecting pipe to improve the energy density of the battery device, the strength of the connecting pipe on both sides of the heat exchange plate in the length direction can be improved by the reinforcing part, so that the connecting pipe and the connecting parts fit tightly and are not prone to gaps, thereby improving the sealing performance after the connecting pipe and the connecting parts are connected and making it less likely to cause heat exchange medium leakage.

[0008] In some embodiments, the connecting pipe has two first sidewalls arranged opposite each other along the length of the heat exchange plate, and at least one of the first sidewalls is provided with the reinforcing portion.

[0009] In the above technical solution, under the premise of reducing the size of the connecting pipe along the length of the heat exchange plate to improve the energy density of the battery device, at least one first sidewall is provided with a reinforcing part. This is beneficial to improve the sealing performance of the connection between the two first sidewalls and the connecting pipe, while reducing the number of reinforcing parts, simplifying the structure of the connecting pipe, and reducing the size of the first sidewall along the length of the heat exchange plate, so as to further reduce the space occupied by the connecting pipe in the length of the heat exchange plate and improve the energy density of the battery device.

[0010] In some embodiments, at least a portion of the first sidewall is recessed into the interior of the connecting pipe to form the reinforcing portion, or at least a portion of the first sidewall protrudes outward from the interior of the connecting pipe to form the reinforcing portion.

[0011] In the above technical solution, at least a portion of the first sidewall is recessed into the inside of the connecting pipe or protrudes out of the connecting pipe to form a reinforcing part. This not only improves the strength of the first sidewall and makes the connection between the connecting pipe and the connector tighter and the sealing better, but also reduces the manufacturing difficulty of the connecting pipe and makes it easier to promote and use.

[0012] In some embodiments, in the height direction of the battery device, the connecting pipe further has two opposing second sidewalls, the maximum thickness of the two second sidewalls being X2; in the length direction of the heat exchange plate, the maximum thickness of the reinforcing portion is Y2, where Y2 > X2.

[0013] In the above technical solution, by making Y2 > X1, the thickness X1 of the second sidewall can be reduced and the strength Y2 of the first sidewall can be increased without affecting the overall strength of the connecting pipe. This allows both the first and second sidewalls to fit tightly with the connector, improving the tightness and sealing of the connection between the connecting pipe and the connector, and reducing the risk of heat exchange medium leakage.

[0014] In some embodiments, the outer surface of the first sidewall protrudes outward to form the reinforcing portion along the length of the heat exchange plate; or, the inner surface of the first sidewall protrudes inward to form the reinforcing portion.

[0015] In the above technical solution, making the outer surface of the first sidewall protrude outward or making the inner surface of the first sidewall protrude inward to form a reinforcing part is beneficial to increasing the thickness of the first sidewall, thereby improving the strength of the first sidewall. Under the premise of reducing the size of the connecting pipe along the length of the heat exchange plate to improve the energy density of the battery device, the first sidewall and the connector are tightly fitted and not easily separated.

[0016] In some embodiments, in the extending direction of the connecting pipe, the connecting pipe includes a first segment, a second segment, and a third segment, the second segment being located between the first segment and the third segment, the cross-sectional dimensions of the first segment and the third segment gradually increasing in the direction away from the second segment, and the second segment being provided with the reinforcing portion.

[0017] In the above technical solution, the flared openings of the first and second sections can guide the connector, making it easier to insert the connector into the connecting pipe, making the connection operation between the connecting pipe and the connector more convenient, which helps to improve the assembly efficiency of the battery device. The connector and the second section with the reinforcing part can fit tightly and have good sealing performance.

[0018] In some embodiments, the connecting pipe includes: an inner sleeve defining an outlet channel inside the inner sleeve; and an outer sleeve fitted over the outer side of the inner sleeve, wherein the outer sleeve and the inner sleeve have different hardnesses, and the one with lower hardness between the outer sleeve and the inner sleeve is adapted to deform to mate with the connector.

[0019] In the above technical solution, by utilizing the hardness difference between the inner and outer sleeves, not only can the connecting pipe be tightly fitted with the connector and have good sealing performance, but it can also absorb a certain amount of assembly deviation, reduce assembly difficulty, and improve the assembly efficiency of the battery device.

[0020] In some embodiments, the hardness of the inner sleeve is lower than that of the outer sleeve, and the connector is adapted to be inserted into the inner sleeve and interference-fitted with the connecting pipe.

[0021] In the above technical solution, the connector can be inserted into the inner sleeve and interference-fitted with the connecting pipe, so that the inner sleeve and the connector can be directly connected. The deformation of the inner sleeve can improve the tightness and sealing of the connection between the inner sleeve and the connector, and reduce the assembly difficulty. The outer sleeve is indirectly connected to the connector, which can provide a force point for the installation of the connecting pipe and improve the overall strength of the connecting pipe. It not only facilitates the connection between the connecting pipe and the connector, but also achieves higher connection strength and sealing between the connecting pipe and the connector. Moreover, the insertion of the connector into the connecting pipe makes it less likely for the volume of the area inside the connector used for the flow of heat exchange medium to be reduced after the connector is connected to the connecting pipe. This helps to ensure that the flow rate of the heat exchange medium meets the requirements to a certain extent and improves the heat exchange efficiency of the battery device.

[0022] In some embodiments, the inner sleeve and the outer sleeve are formed by two-color injection molding.

[0023] In the above technical solution, the two-color injection molding process can mold two different materials into one piece, which makes the range of materials that can be selected for the inner sleeve and outer sleeve wider, making it easier to obtain raw materials to manufacture the connecting pipe. The manufacturing difficulty of the connecting pipe is low, and the inner sleeve and outer sleeve are molded into one piece by the two-color injection molding process, making the inner sleeve and outer sleeve not easy to separate, and the integrity of the connecting pipe is better.

[0024] In some embodiments, at least one of the inner sleeve and the outer sleeve is provided with a reinforcing portion.

[0025] In the above technical solution, at least one of the inner and outer sleeves is provided with a reinforcing part. This can improve the connection strength and sealing performance between the connecting pipe and the connector by utilizing the hardness difference between the inner and outer sleeves and reducing assembly difficulty. At the same time, the reinforcing part can improve the strength of the connecting pipe, making the reinforcing part fit tightly with the connector without easily forming gaps. This further improves the sealing performance after the connecting pipe and the connector are connected, making it less likely for heat exchange medium leakage to occur.

[0026] In some embodiments, at least one of the connecting members is provided at both ends of the heat exchange plate along its length, and two adjacent heat exchange plates are connected by two connecting pipes.

[0027] In the above technical solution, multiple connecting pipes can connect multiple flow channels with different flow directions in two adjacent heat exchange plates, which is beneficial to improving the heat exchange efficiency of the battery device. Moreover, the connecting pipes occupy less space in the length direction of the heat exchange plate, which is beneficial to improving the energy density of the battery device.

[0028] Secondly, this utility model embodiment also provides an electrical device, including the battery device described above.

[0029] In the above technical solution, by adopting the battery device described above, the size of the connecting pipe along the length of the heat exchange plate is reduced, which can reduce the space occupied by the connecting pipe in the battery device along the length of the heat exchange plate, thereby improving the energy density of the battery device, enhancing the vehicle's range, and meeting users' demand for long vehicle range.

[0030] Thirdly, this utility model embodiment also provides a connecting pipe for connecting multiple heat exchange plates in a battery device. In the height direction of the battery device, the maximum dimension of the connecting pipe is X1; in the length direction of the heat exchange plates, the maximum dimension of the connecting pipe is Y1, where X1 > Y1.

[0031] In the above technical solution, by reducing the size of the connecting pipe along the length of the heat exchange plate, the space occupied by the connecting pipe in the battery device along the length of the heat exchange plate can be reduced, which is conducive to improving the energy density of the battery device and improving the range of the vehicle powered by the battery device of this application, thus meeting the user's demand for long vehicle range.

[0032] In some embodiments, the connecting pipe has two first sidewalls arranged opposite each other along the length of the heat exchange plate, and at least one of the first sidewalls is provided with a reinforcing portion.

[0033] In the above technical solution, under the premise of reducing the dimension of the connecting pipe along the length of the heat exchange plate to improve the energy density of the battery device, at least one first sidewall is provided with a reinforcing part. This can improve the strength of the connecting pipe on at least one side along the length of the heat exchange plate by at least one reinforcing part, making the connecting pipe and the connector tightly connected and less prone to gaps. This improves the sealing performance after the connecting pipe and the connector are connected, making it less likely for the heat exchange medium to leak. It also helps to reduce the number of reinforcing parts, simplify the structure of the connecting pipe, and reduce the dimension of the first sidewall along the length of the heat exchange plate, so as to further reduce the space occupied by the connecting pipe in the length of the heat exchange plate and improve the energy density of the battery device.

[0034] In some embodiments, at least a portion of the first sidewall is recessed into the interior of the connecting pipe to form the reinforcing portion, or at least a portion of the first sidewall protrudes outward from the interior of the connecting pipe to form the reinforcing portion.

[0035] In the above technical solution, at least a portion of the first sidewall is recessed into the inside of the connecting pipe or protrudes out of the connecting pipe to form a reinforcing part. This not only improves the strength of the first sidewall and makes the connection between the connecting pipe and the connector tighter and the sealing better, but also reduces the manufacturing difficulty of the connecting pipe and makes it easier to promote and use.

[0036] In some embodiments, in the height direction of the battery device, the connecting pipe further has two oppositely arranged second sidewalls, the maximum thickness of the two second sidewalls being X2; in the length direction of the heat exchange plate, one side of the connecting pipe is provided with a reinforcing portion, the maximum thickness of the reinforcing portion being Y2, where Y2 > X2.

[0037] In the above technical solution, by making Y2 > X1, the thickness X1 of the second sidewall can be reduced and the strength Y2 of the reinforcing part can be increased without affecting the overall strength of the connecting pipe. This allows the first sidewall and the reinforcing part to fit tightly with the connector, improving the tightness and sealing of the connection between the connecting pipe and the connector, and reducing the risk of heat exchange medium leakage.

[0038] In some embodiments, along the length of the heat exchange plate, the connecting pipe has two opposing first sidewalls, the outer surface of the first sidewalls protruding outward to form the reinforcing portion; or, the inner surface of the first sidewalls protruding inward to form the reinforcing portion.

[0039] In the above technical solution, making the outer surface of the first sidewall protrude outward or making the inner surface of the first sidewall protrude inward to form a reinforcing part is beneficial to increasing the thickness of the first sidewall, thereby improving the strength of the first sidewall. Under the premise of reducing the size of the connecting pipe along the length of the heat exchange plate to improve the energy density of the battery device, the first sidewall and the connector are tightly fitted and not easily separated.

[0040] In some embodiments, the connecting pipe includes: an inner sleeve defining an outlet channel inside the inner sleeve; and an outer sleeve fitted outside the inner sleeve, wherein the outer sleeve and the inner sleeve have different hardnesses, and the one with lower hardness between the outer sleeve and the inner sleeve is adapted to deform to mate with the connector of the heat exchange plate.

[0041] In the above technical solution, by utilizing the hardness difference between the inner and outer sleeves, not only can the connecting pipe be tightly fitted with the connector and have good sealing performance, but it can also absorb a certain amount of assembly deviation, reduce assembly difficulty, and improve the assembly efficiency of the battery device.

[0042] In some embodiments, the inner sleeve and the outer sleeve are formed by two-color injection molding.

[0043] In the above technical solution, the two-color injection molding process can mold two different materials into one piece, which makes the range of materials that can be selected for the inner sleeve and outer sleeve wider, making it easier to obtain raw materials to manufacture the connecting pipe. The manufacturing difficulty of the connecting pipe is low, and the inner sleeve and outer sleeve are molded into one piece by the two-color injection molding process, making the inner sleeve and outer sleeve not easy to separate, and the integrity of the connecting pipe is better.

[0044] In some embodiments, at least one of the inner sleeve and the outer sleeve is provided with a reinforcing portion.

[0045] In the above technical solution, at least one of the inner and outer sleeves is provided with a reinforcing part. This can improve the overall connection strength and sealing performance between the connecting pipe and the connector by utilizing the hardness difference between the inner and outer sleeves and reducing assembly difficulty. At the same time, the reinforcing part can improve the strength of the connecting pipe, making the reinforcing part fit tightly with the connector without easily forming gaps. This further improves the sealing performance after the connecting pipe and the connector are connected, making it less likely for heat exchange medium leakage to occur.

[0046] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0047] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0048] Figure 1 These are schematic diagrams of the structure of electrical equipment according to some embodiments of the present utility model;

[0049] Figure 2 This is a schematic diagram of the structure of a battery device according to some embodiments of the present invention;

[0050] Figure 3 This is a schematic diagram of the cooperation structure between the connecting pipe and the heat exchange plate according to some embodiments of the present utility model;

[0051] Figure 4 yes Figure 3 Exploded view;

[0052] Figure 5 yes Figure 3 The front view;

[0053] Figure 6 yes Figure 3 A sectional view;

[0054] Figure 7 This is a schematic diagram of the structure of a connecting pipe according to some embodiments of the present utility model, wherein a portion of the first sidewall is recessed into the interior of the connecting pipe to form a reinforcing portion;

[0055] Figure 8 yes Figure 7 A sectional view;

[0056] Figure 9 This is a schematic diagram of the structure of a connecting pipe according to some embodiments of the present utility model, wherein the outer surface of the first sidewall protrudes outward to form a reinforcing part;

[0057] Figure 10 yes Figure 9 Side view.

[0058] Figure label:

[0059] Battery unit 1000; Electrical equipment 2000;

[0060] Battery housing 100; first part 110; second part 120; storage space 130; battery cell 200;

[0061] Heat exchange plate 10; Connector 11;

[0062] Connecting pipe 20; first section 201; second section 202; third section 203; first side wall 21; reinforcing part 211; second side wall 22; inner sleeve 23; flow channel 231; outer sleeve 24. Detailed Implementation

[0063] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0064] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0065] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0066] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0067] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0068] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0069] In this application, "multiple" means two or more (including two).

[0070] Currently, judging from market trends, battery applications are becoming increasingly widespread. Batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of battery applications, market demand is also constantly increasing.

[0071] A battery device typically includes individual battery cells, multiple heat exchange plates, and connecting pipes for connecting the different heat exchange plates. The heat exchange plates exchange heat with the battery cells to keep the battery cells within a suitable temperature range. In related technologies, the structural design of the connecting pipes is unreasonable, resulting in the connecting pipes occupying too much space along the length of the heat exchange plates, thus encroaching on the installation space of the battery cells and affecting the energy density of the battery device.

[0072] Based on this, this application proposes a battery device, including a battery cell, multiple heat exchange plates, and a connecting pipe. The maximum dimension of the connecting pipe is X1 in the height direction of the battery device; the maximum dimension of the connecting pipe is Y1 in the length direction of the heat exchange plates, satisfying: X1 > Y1.

[0073] In the above embodiments, the cross-section of the connecting pipe is formed into an ellipse, an oblong shape or other shapes, which can reduce the space occupied by the connecting pipe in the length direction of the heat exchange plate, thereby increasing the installation space of the battery cell and improving the energy density of the battery device.

[0074] The battery device of this application embodiment is used in electrical equipment to supply power to the electrical equipment. The electrical equipment can be a vehicle, ship, or aircraft, etc., and the battery device of this application embodiment can be used to form the power system of the electrical equipment to ensure the safety and reliability of the electrical equipment.

[0075] For example, the electrical equipment disclosed in the embodiments of this application may be, but is not limited to, vehicles, mobile phones, tablets, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles may be fuel vehicles, natural gas vehicles, new energy vehicles, or rail vehicles. New energy vehicles may be pure electric vehicles, hybrid vehicles, or range-extended vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0076] For ease of explanation, the following embodiments will use a vehicle as an example to illustrate the electrical equipment 2000.

[0077] Reference Figure 1 As shown, a battery device 1000 is installed inside the vehicle. The battery device 1000 can be located at the bottom, front, or rear of the vehicle. The battery device 1000 can be used to power the vehicle; for example, it can serve as the vehicle's operating power source. The vehicle may also include a controller and a motor. The controller is used to control the battery device 1000 to supply power to the motor, for example, to meet the vehicle's power needs during starting, navigation, and driving.

[0078] In this embodiment, the battery device 1000 can not only serve as the operating power source for the vehicle, but also as the driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0079] In the embodiments of this application, such as Figure 2 As shown, battery device 1000 refers to a single physical module comprising one or more battery cells 200 to provide higher voltage and capacity. For example, battery device 1000 mentioned in this application may include battery modules or battery packs. Some battery devices 1000 may include a battery housing 100 for encapsulating one or more battery cells 200 or multiple battery modules. The battery housing 100 includes a first portion 110 and a second portion 120, which define a receiving space 130 in which the battery cells 200 are received. The battery housing 100 can prevent liquids or other foreign objects from affecting the charging or discharging of the battery cells 200. Of course, some battery devices 1000 may not include the above-mentioned housing and may be directly disposed within the battery mounting compartment of the electrical device.

[0080] In this application, the battery cell 200 may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and this application embodiment is not limited to these. The battery cell 200 may be cylindrical, flat, cuboid, or other shapes, etc., and this application embodiment is not limited to these. The battery cell 200 is generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and this application embodiment is not limited to these. For example, the battery cell includes an end cap, a casing, the battery cell itself, and other functional components.

[0081] For example, a battery cell 200 may include a casing, electrode assemblies, and an electrolyte. The casing houses the electrode assemblies and the electrolyte, and the casing may contain one or more electrode assemblies. The electrode assemblies are the components in the battery cell where electrochemical reactions occur. They comprise multiple layers of materials arranged in a stacked manner, specifically including a cathode electrode, an anode electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the cathode and anode electrodes.

[0082] Hereinafter, with reference to the accompanying drawings, a battery device 1000 according to an embodiment of the present invention will be described.

[0083] Please refer to Figures 2-10 As shown, the battery device 1000 according to an embodiment of the present utility model may include a battery cell 200, a plurality of heat exchange plates 10 and a connecting pipe 20.

[0084] The heat exchange plate 10 can be used to circulate a heat exchange medium, which can be a coolant with a lower temperature or a heat medium with a higher temperature, such as a water-cooled plate. The heat exchange plate 10 is in contact with one side surface of the battery cell 200, allowing heat exchange between the heat exchange plate 10 and the battery cell 200. This allows the heat exchange plate 10 to contact a larger area of ​​the side surface of the battery cell 200, achieving large-area heat exchange, similar to large-area cooling, resulting in good heat exchange performance. One or more battery cells 200 can be placed between two heat exchange plates 10, allowing multiple battery cells 200 of the battery device 1000 to exchange heat through multiple heat exchange plates 10. The heat exchange plates 10 are used to exchange heat with the battery cells 200, preventing the temperature of the battery cells 200 from becoming too high and burning out the battery device 1000, and also preventing the temperature of the battery cells 200 from becoming too low and affecting their performance, thus keeping the temperature of the battery cells 200 within a suitable range.

[0085] The heat exchange plate 10 has a connector 11, and a connecting pipe 20 is located between two adjacent heat exchange plates 10, with the end of the connecting pipe 20 capable of connecting to the connector 11. Each heat exchange plate 10 may have one or more connectors 11, and the connector 11 may be a water tap. For example, in some embodiments, such as Figures 3-7As shown in the figure, a portion of the heat exchange plate 10 with connecting members 11 is shown, but the entire heat exchange plate 10 is not shown. A connecting member 11 is provided at the front end of the heat exchange plate 10, and the connecting member 11 is connected to the end of the connecting pipe 20. In some embodiments, the front end of the heat exchange plate 10 may have two connecting members 11, for example, one connecting member 11 on each of the left and right sides of the front end of the heat exchange plate 10, so that the front end of the heat exchange plate 10 can be connected to two connecting pipes 20 through the two connecting members 11. The heat exchange plate 10 may also have connecting members 11 at both the front and rear ends; this application does not limit this.

[0086] The heat exchange plate 10 can be connected to the connector 11, and the connector 11 can be connected to the connecting pipe 20, so as to connect two adjacent heat exchange plates 10 through the connecting pipe 20, so as to facilitate the flow of heat exchange medium inside the multiple heat exchange plates 10 in the battery device 1000, such as introducing heat exchange medium into the battery device 1000 and discharging heat exchange medium in the battery device 1000.

[0087] In the height direction of the battery device 1000, the maximum dimension of the connecting pipe 20 is X1. For example, in some embodiments, such as Figure 2 and Figure 8 As shown, the height direction of the battery device 1000 is parallel to the vertical direction in the figure, and the maximum dimension of the connecting pipe 20 along the vertical direction is X1.

[0088] Along the length of the heat exchange plate 10, the maximum dimension of the connecting pipe 20 is Y1. For example, in some embodiments, such as Figures 3-4 and Figure 8 As shown, the length direction of the heat exchange plate 10 is parallel to the front-to-back direction in the figure, and the maximum dimension of the connecting pipe 20 in the front-to-back direction is Y1.

[0089] In this application, the descriptions of directions such as up, down, front, back, left, and right are based only on the directions marked in the accompanying drawings, and are not a limitation on the actual usage direction of the battery device 1000.

[0090] X1 > Y1 reduces the dimension of the connecting pipe 20 along the length of the heat exchange plate 10, thereby reducing the space occupied by the connecting pipe 20 along the length of the heat exchange plate 10. This increases the space available for installing the battery cells 200 in the battery device 1000, improving the space utilization rate and energy density of the battery device 1000. X1 > Y1 also allows the cross-section of the connecting pipe 20 to be elliptical, oblong, or other shapes.

[0091] In some related technologies, the cross-section of the connecting pipe inside the battery device is a perfect circle, that is, the size of the connecting pipe in the length direction of the heat exchange plate is equal to the size in the height direction of the battery device. Therefore, the connecting pipe occupies a large space in the length direction of the heat exchange plate, which can easily squeeze the installation space of the battery cells between the two heat exchange plates in the length direction of the heat exchange plate, resulting in low energy density of the battery device and poor range of the vehicle powered by the battery device.

[0092] By making X1 > Y1, this application can reduce the size of the connecting pipe 20 in the length direction of the heat exchange plate 10, so that the connecting pipe 20 does not easily encroach on the installation space of the battery cell 200 in the length direction of the heat exchange plate 10, thereby increasing the installation space of the battery cell 200, which is beneficial to improving the energy density of the battery device 1000, and improving the range of the vehicle powered by the battery device 1000 of this application, making it easier to meet the user's demand for long vehicle range.

[0093] Thus, according to the embodiment of the present invention, by reducing the size of the connecting pipe 20 along the length of the heat exchange plate 10, the space occupied by the connecting pipe 20 along the length of the heat exchange plate 10 in the battery device 1000 can be reduced, which is beneficial to improving the energy density of the battery device 1000, thereby improving the range of the vehicle powered by the battery device 1000 of the present application, and helping to meet the user's demand for long vehicle range.

[0094] The dimension of the connecting pipe 20 along the length of the heat exchange plate 10 is smaller than its dimension along the height of the battery device 1000, i.e., X1 > Y1. According to simulation calculations, after assembling the connecting pipe 20 with the connector 11, the stress between the connecting pipe 20 and the connector 11 will concentrate on both sides of the connecting pipe 20 along the height of the battery device 1000, making the connection between the connecting pipe 20 and the connector 11 on both sides of the height of the battery device 1000 tight and preventing gaps. However, there is a certain possibility that the connection between the connecting pipe 20 and the connector 11 on both sides along the length of the heat exchange plate 10 may not be tight, resulting in gaps or separation, leading to leakage of the heat exchange medium inside the battery device 1000. This not only makes it impossible to control the temperature of the battery cell 200 within a suitable range, but also easily damages the battery cell 200 due to the leaked heat exchange medium.

[0095] In some embodiments of this utility model, such as Figures 3-5 and Figures 7-9As shown, one of the connecting pipe 20 and the connector 11 is provided with a reinforcing part 211. The reinforcing part 211 is located on one side of the connecting pipe 20 or the connector 11 along the length of the heat exchange plate 10, and the other of the connecting pipe 20 and the connector 11 can fit tightly against the reinforcing part 211. There can be one or more reinforcing parts 211, for example, two reinforcing parts 211 are located on both sides of the connecting pipe 20 along the length of the heat exchange plate 10. The tight fit here can refer to the tight fit of two planes, or it can refer to the tight fit of two curved or irregular surfaces. For example, at least one of the connecting pipe 20 and the connector 11 deforms at the contact surface, so that the contact surfaces of the connecting pipe 20 and the connector 11 are deformed and fit tightly against each other.

[0096] A reinforcing part 211 can be provided in the connecting pipe 20, such as Figures 3-5 and Figures 8-9 As shown, the reinforcing part 211 is located on one side of the connecting pipe 20 along the length of the heat exchange plate 10, and the connecting piece 11 fits tightly with the reinforcing part 211. The reinforcing part 211 can be a part of the connecting pipe 20 that is recessed inward or protruding outward.

[0097] Alternatively, a reinforcing part 211 may be provided on the connector 11. The reinforcing part 211 is located on one side of the connector 11 along the length of the heat exchange plate 10. The connecting pipe 20 is tightly fitted with the reinforcing part 211. The reinforcing part 211 may be a part of the connector 11 that is recessed inward or protruding outward.

[0098] For ease of understanding, the following description uses the example of the connecting pipe 20 having a reinforcing part 211. Of course, embodiments with the connecting member 11 having a reinforcing part 211 can also be obtained.

[0099] One reinforcing part 211 can strengthen the strength of the connecting pipe 20 on one side of the heat exchange plate 10 along its length. At least two reinforcing parts 211 can strengthen the strength of the connecting pipe 20 on both sides of the heat exchange plate 10 along its length, thereby increasing the strength of the connecting pipe 20 in the area of ​​the reinforcing part 211, that is, increasing the strength of the connecting pipe 20 on both sides of the heat exchange plate 10 along its length. By increasing the strength of the connecting pipe 20 on both sides of the heat exchange plate 10 along its length, the connecting pipe 20 is less likely to deform on both sides of the heat exchange plate 10 along its length. This is beneficial because after the connecting pipe 20 is tightly fitted with the connector 11, the connecting pipe 20 is less likely to deform on both sides of the heat exchange plate 10 along its length, thus preventing gaps and separation between the connecting pipe 20 and the connector 11.

[0100] Therefore, by strengthening the connecting pipe 20 on both sides of the heat exchange plate 10 along its length by reinforcing part 211, the connecting pipe 20 and the connector 11 can always be tightly fitted together on both sides of the heat exchange plate 10 along its length and are not easy to separate. This improves the sealing performance of the connecting pipe 20 and the connector 11 after they are tightly fitted together, and the water tightness (fluid sealing performance) of the battery device 1000 is better. This reduces the risk of heat exchange medium leakage and helps to improve the reliability of the connecting pipe 20 connecting different heat exchange plates 10. It is also easier to control the temperature of the battery cell 200 within a suitable range and less likely to damage the battery cell 200.

[0101] In this way, while changing the size and shape of the connecting pipe 20 to increase the energy density of the battery device 1000, the strength of the connecting pipe 20 on both sides of the heat exchange plate 10 in the length direction can be increased by the reinforcing part 211, so that the connecting pipe 20 and the connector 11 fit tightly together and are not prone to gaps, thereby improving the sealing performance after the connecting pipe 20 and the connector 11 are connected and the problem of heat exchange medium leakage is less likely to occur.

[0102] In some other embodiments of this utility model, both the connecting pipe 20 and the connector 11 are provided with a reinforcing part 211 so that the connecting pipe 20 and the connector 11 can fit together tightly.

[0103] In some embodiments, such as Figures 3-5 and Figures 7-10 As shown, along the length of the heat exchange plate 10, the connecting pipe 20 has two opposing first sidewalls 21, at least one of which is provided with a reinforcing portion 211. For example... Figures 3-5 and Figures 7-10 The front and rear side walls of the central connecting pipe 20 are both first side walls 21, and both first side walls 21 are provided with reinforcing parts 211.

[0104] By providing a reinforcing part 211 on the first sidewall 21 of the connecting pipe 20, the strength of the first sidewall 21 can be enhanced so that the first sidewall 21 fits snugly against the connector 11.

[0105] For example, a first sidewall 21 with a reinforcing part 211 fits tightly against the connector 11, and both deform so that the contact surface is non-planar, resulting in a tighter connection. Under the compression of the deformation force of the connector 11 and the first sidewall 21 with the reinforcing part 211, another first sidewall 21 without the reinforcing part 211 can also fit tightly against the connector 11.

[0106] Thus, while reducing the dimension of the connecting pipe 20 along the length of the heat exchange plate 10 to improve the energy density of the battery device 1000, at least one first sidewall 21 is provided with a reinforcing part 211. This helps to improve the sealing performance of the connection between the two first sidewalls 21 and the connecting pipe 20, while reducing the number of reinforcing parts 211, simplifying the structure of the connecting pipe 20, and reducing the dimension of the first sidewall 21 along the length of the heat exchange plate 10, so as to further reduce the space occupied by the connecting pipe 20 in the length of the heat exchange plate 10 and improve the energy density of the battery device 1000.

[0107] In some embodiments, such as Figures 3-5 and Figures 7-8 As shown, at least a portion of the first sidewall 21 is recessed into the connecting pipe 20 to form a reinforcing portion 211, providing an inward concave compensation structure, i.e., the reinforcing portion 211, which helps to ensure that the connecting pipe 20 and the connector 11 are always in contact. Therefore, the reinforcing portion 211 is at least a portion of the first sidewall 21, for example, the middle or all of the first sidewall 21 is recessed into the connecting pipe 20 to form the reinforcing portion 211.

[0108] In some embodiments, such as Figures 9-10 As shown, at least a portion of the first sidewall 21 protrudes outward from the connecting pipe 20 to form a reinforcing portion 211, providing an outward protrusion compensation structure, i.e., the reinforcing portion 211, to ensure that the connecting pipe 20 and the connector 11 are always in contact. Therefore, the reinforcing portion 211 is at least a portion of the first sidewall 21, for example, the middle or all of the first sidewall 21 protrudes outward from the connecting pipe 20 to form the reinforcing portion 211.

[0109] When the connecting pipe 20 is not connected to the connector 11, the reinforcing part 211 is recessed into the connecting pipe 20 or protrudes outward from the connecting pipe 20, which can be used to improve the strength of the first sidewall 21. When the connecting pipe 20 is engaged with the connector 11, the reinforcing part 211 can deform to press the first sidewall 21 and the connector 11 together under the action of deformation force, which helps to improve the tightness and sealing of the connection between the connecting pipe 20 and the connector 11.

[0110] In addition, at least a portion of the first sidewall 21 forms a reinforcing part 211, which allows the entire connecting pipe 20, including the reinforcing part 211, to be manufactured directly without the need for additional steps to manufacture the reinforcing part 211 separately. This simplifies the manufacturing process, reduces manufacturing difficulty, and makes it easy to promote and use.

[0111] In this way, at least a portion of the first sidewall 21 is recessed into the inside of the connecting pipe 20 or protrudes outward from the connecting pipe 20 to form a reinforcing part 211. This not only improves the strength of the first sidewall 21 and makes the connection between the connecting pipe 20 and the connector 11 tighter and more airtight, but also reduces the manufacturing difficulty of the connecting pipe 20 and makes it easier to promote and use.

[0112] In some embodiments of this utility model, such as Figures 2-5 and Figures 7-10 As shown, in the height direction of the battery device 1000, the connecting pipe 20 also has two opposingly arranged second sidewalls 22, the maximum thickness of the two second sidewalls 22 being X2, for example... Figures 3-5 and Figures 8-10 The upper and lower sidewalls of the central connecting pipe 20 are both second sidewalls 22. Along the length of the heat exchange plate 10, the maximum thickness of the reinforcing part 211 is Y2, where Y2 > X2.

[0113] Y2 > X2, making the maximum thickness of the reinforcing part 211 greater than the maximum thickness of the second sidewall 22. Due to stress concentration at the connection between the second sidewall 22 and the connector 11, the connection between the second sidewall 22 and the connector 11 is very tight and unlikely to produce gaps. Therefore, without affecting the overall strength of the connecting pipe 20, reducing the thickness of the second sidewall 22, i.e., reducing X2, ensures that the tightness and sealing of the connection between the second sidewall 22 and the connector 11 still meet the requirements.

[0114] Since the tightness and sealing of the connection between the first sidewall 21 and the connector 11 may decrease, increasing the thickness of the first sidewall 21 can improve the strength of the first sidewall 21, so as to ensure that the first sidewall 21 and the connector 11 are always in contact, thereby improving the tightness and sealing of the connection between the first sidewall 21 and the connector 11.

[0115] In this way, Y2 > X2, the thickness X2 of the second sidewall 22 can be reduced and the strength Y2 of the first sidewall 21 can be increased without affecting the overall strength of the connecting pipe 20. This allows both the first sidewall 21 and the second sidewall 22 to fit tightly with the connector 11, improving the tightness and sealing of the connection between the connecting pipe 20 and the connector 11, and reducing the risk of heat exchange medium leakage.

[0116] In some embodiments, such as Figures 9-10 As shown, along the length of the heat exchange plate 10, the outer surface of the first sidewall 21 protrudes outward to form a reinforcing portion 211, while no requirements are placed on the inner surface of the first sidewall 21. In other embodiments, such as Figures 3-5 and Figures 7-8 As shown, in the length direction of the heat exchange plate 10, the inner surface of the first sidewall 21 protrudes inward to form a reinforcing part 211, and no requirements are made for the outer surface of the first sidewall 21.

[0117] Making the outer surface of the first sidewall 21 protrude outward or the inner surface of the first sidewall 21 protrude inward to form a reinforcing part 211 both help to increase the thickness of the first sidewall 21, thereby improving the strength of the first sidewall 21. This allows the first sidewall 21 to fit tightly with the connector 11 without being easily separated, while reducing the size of the connecting pipe 20 along the length of the heat exchange plate 10 to increase the energy density of the battery device 1000.

[0118] In some embodiments of this utility model, such as Figures 3-7 and Figure 9 As shown, in the extending direction of the connecting pipe 20, the connecting pipe 20 includes a first segment 201, a second segment 202, and a second segment 203, with the second segment 202 located between the first segment 201 and the second segment 203. The cross-sectional dimensions of the first segment 201 and the second segment 203 gradually increase in the direction away from the second segment 202, so that the first segment 201 and the second segment 202 form an outwardly expanding funnel-shaped opening. The second segment 202 is provided with a reinforcing part 211.

[0119] The flared openings of the first section 201 and the second section 202 can guide the connector 11, making it easier to insert the connector 11 into the connecting tube 20. This makes the connection operation between the connecting tube 20 and the connector 11 more convenient and helps to improve the assembly efficiency of the battery device 1000. The connector 11 and the second section 202 with the reinforcing part 211 can fit tightly together and have good sealing performance.

[0120] In some embodiments of this utility model, such as Figure 6 As shown, the connecting pipe 20 includes an inner sleeve 23 and an outer sleeve 24. The inner sleeve 23 defines a flow channel 231 for the flow of heat exchange medium. The outer sleeve 24 is fitted over the inner sleeve 23. After connecting two adjacent heat exchange plates 10 via the connecting pipe 20, the heat exchange medium in one heat exchange plate 10 can flow into the flow channel 231 of the inner sleeve 23 through the connector 11. Then, the heat exchange medium in the flow channel 231 flows into another heat exchange plate 10 through the connector 11 of the other heat exchange plate 10, thus realizing the flow of heat exchange medium between multiple heat exchange plates 10.

[0121] The outer sleeve 24 and the inner sleeve 23 have different hardness. The one with lower hardness, the outer sleeve 24 and the inner sleeve 23, can deform to fit with the connector 11. The one with higher hardness, the outer sleeve 24 and the inner sleeve 23, can also deform slightly along with the one with lower hardness, so that the entire connecting pipe 20 fits tightly with the connector 11 and has good sealing performance.

[0122] By utilizing the inner sleeve 23 and the outer sleeve 24, which has higher rigidity, a force-bearing point is provided, facilitating the connection between the connecting pipe 20 and the connector 11. This reduces assembly difficulty. Utilizing the inner sleeve 23 and the outer sleeve 24, which has higher rigidity, also improves the overall strength of the connecting pipe 20, preventing excessive deformation that could cause gaps between the connecting pipe 20 and the connector 11. This enhances the sealing performance of the connection between the connecting pipe 20 and the connector 11, reducing the risk of leakage.

[0123] For example, if the connector 11 is inserted into the connecting pipe 20, and the hardness of the inner sleeve 23 is lower than that of the outer sleeve 24, then the inner sleeve 23 can deform to fit tightly with the connector 11. The outer sleeve 24 may also deform slightly along with the inner sleeve 23, ensuring a tight fit and good seal between the connecting pipe 20 and the connector 11.

[0124] Furthermore, since the inner sleeve 23 and the outer sleeve 24, which has lower hardness, can deform to fit with the connector 11, the connecting pipe 20 can absorb certain assembly deviations. For example, it can absorb 3mm of assembly deviations in both the height direction of the battery device 1000 and the length direction of the heat exchange plate 10. This allows the connecting pipe 20 and the connector 11 to still be well connected even when there are assembly deviations, which helps to reduce the assembly accuracy requirements of the battery device 1000, thereby reducing the assembly difficulty of the battery device 1000 and improving the assembly efficiency of the battery device 1000.

[0125] Therefore, by utilizing the hardness difference between the inner sleeve 23 and the outer sleeve 24, not only can the connecting pipe 20 be tightly fitted with the connector 11 and have good sealing performance, but it can also absorb a certain amount of assembly deviation, reduce assembly difficulty, and improve the assembly efficiency of the battery device 1000.

[0126] It should be noted that, Figure 6 The inner sleeve 23 can deform to ensure a tight connection with the connector 11, while Figure 6 For ease of understanding, the connecting pipe 20 is shown in an undeformed state.

[0127] In some embodiments, such as Figure 6As shown, the hardness of the inner sleeve 23 is lower than that of the outer sleeve 24, allowing the connector 11 to be inserted into the inner sleeve 23 and press-fitted with the connecting pipe 20. When the connecting pipe 20 and connector 11 are not connected, the internal dimensions of the connecting pipe 20 are larger than the overall dimensions of the connector 11, ensuring that when the connector 11 is inserted into the connecting pipe 20, the outer circumference of the connector 11 can press-fit with the inner circumference of the connecting pipe 20, resulting in a tight and well-sealed connection between the connector 11 and the connecting pipe 20.

[0128] The connector 11 can be inserted into the inner sleeve 23 and press-fitted with the connecting pipe 20, so that the inner sleeve 23 can be directly connected to the connector 11. The deformation of the inner sleeve 23 can improve the tightness and sealing of the connection between the inner sleeve 23 and the connector 11, and reduce the assembly difficulty. The outer sleeve 24 is indirectly connected to the connector 11, which can provide a force point for the installation of the connecting pipe 20 and improve the overall strength of the connecting pipe 20. It not only facilitates the connection between the connecting pipe 20 and the connector 11, but also achieves higher connection strength and sealing between the connecting pipe 20 and the connector 11. Furthermore, the insertion of the connector 11 into the connecting pipe 20 makes it less likely for the volume of the area in the connector 11 used for the flow of heat exchange medium to be reduced after the connection between the connector 11 and the connecting pipe 20. This helps to ensure that the flow rate of the heat exchange medium meets the requirements to a certain extent and improves the heat exchange efficiency of the battery device 1000.

[0129] In some embodiments, the inner sleeve 23 and the outer sleeve 24 are formed by two-color injection molding. The two-color injection molding process allows two different materials to be injection molded into a single piece, broadening the range of materials that can be used for the inner sleeve 23 and the outer sleeve 24, facilitating the acquisition of raw materials for manufacturing the connecting pipe 20, reducing the manufacturing difficulty of the connecting pipe 20, and making the inner sleeve 23 and the outer sleeve 24 less prone to separation, resulting in better overall integrity of the connecting pipe 20.

[0130] In some embodiments, such as Figures 3-10 As shown, at least one of the inner sleeve 23 and the outer sleeve 24 is provided with a reinforcing portion 211. For example, the inner sleeve 23 is thickened, such as by making at least a portion of the inner surface of the inner sleeve 23 bulge inward. For example, the outer sleeve 24 is thickened or recessed, such as by making at least a portion of the inner surface of the outer sleeve 24 bulge inward, at least a portion of the outer surface bulge outward, at least a portion of the outer surface bulge inward, at least a portion of the outer surface bulge outward, or at least a portion of the outer surface bulge outward, etc.

[0131] At least one of the inner sleeve 23 and the outer sleeve 24 is provided with a reinforcing part 211. This can improve the connection strength and sealing performance between the connecting pipe 20 and the connector 11 by utilizing the hardness difference between the inner sleeve 23 and the outer sleeve 24, and reduce the assembly difficulty. At the same time, the reinforcing part 211 can be used to increase the strength of the connecting pipe 20, so that the reinforcing part 211 and the connector 11 fit tightly and are not prone to gaps. This further improves the sealing performance after the connecting pipe 20 and the connector 11 are connected, and the problem of heat exchange medium leakage is less likely to occur.

[0132] In some embodiments of this utility model, such as Figures 3-6 As shown, the heat exchange plate 10 has at least one connector 11 at each end along its length, and two adjacent heat exchange plates 10 are connected by two connecting pipes 20. Multiple heat exchange medium channels with different flow directions can be arranged between two adjacent heat exchange plates 10 and connected by the connecting pipes 20, which facilitates increasing the heat exchange structures that the battery device 1000 can implement and improves the heat exchange efficiency of the battery device 1000.

[0133] Multiple connecting pipes 20 can connect multiple flow channels with different flow directions within two adjacent heat exchange plates 10, which is beneficial to improving the heat exchange efficiency of the battery device 1000. In addition, the connecting pipes 20 occupy less space in the length direction of the heat exchange plate 10, which is beneficial to improving the energy density of the battery device 1000.

[0134] like Figure 1 As shown, the electrical device 2000 according to the second aspect embodiment of this application includes a battery device 1000 according to the first aspect embodiment of this application. The battery device 1000 is used to provide electrical energy to the electrical device 2000. Thus, by employing the battery device 1000 described above, the size of the connecting pipe 20 along the length of the heat exchange plate 10 in the electrical device 2000 according to the embodiment of this application is reduced. This reduces the space occupied by the connecting pipe 20 along the length of the heat exchange plate 10 within the battery device 1000, thereby improving the energy density of the battery device 1000, enhancing the vehicle's range, and better meeting users' needs for longer vehicle range.

[0135] The following describes the connecting pipe 20 according to an embodiment of a third aspect of this application, such as... Figures 3-10 As shown, the connecting pipe 20 is used to connect multiple heat exchange plates 10 in the battery device 1000. The maximum dimension of the connecting pipe 20 in the height direction of the battery device 1000 is X1; the maximum dimension of the connecting pipe 20 in the length direction of the heat exchange plate 10 is Y1, where X1 > Y1.

[0136] X1 > Y1 reduces the dimension of the connecting pipe 20 along the length of the heat exchange plate 10, thereby reducing the space occupied by the connecting pipe 20 along the length of the heat exchange plate 10. This increases the space available for installing the battery cells 200 in the battery device 1000, improving the space utilization rate and energy density of the battery device 1000. X1 > Y1 also allows the cross-section of the connecting pipe 20 to be elliptical, oblong, or other shapes.

[0137] According to the embodiment of the present invention, by reducing the size of the connecting pipe 20 along the length of the heat exchange plate 10, the space occupied by the connecting pipe 20 along the length of the heat exchange plate 10 in the battery device 1000 can be reduced, which is beneficial to improving the energy density of the battery device 1000, thereby improving the range of the vehicle powered by the battery device 1000 of the present application, and helping to meet the user's demand for long vehicle range.

[0138] In some embodiments, such as Figures 3-5 and Figures 7-10 As shown, in the length direction of the heat exchange plate 10, the connecting pipe 20 has two first sidewalls 21 arranged opposite to each other, and at least one first sidewall 21 is provided with a reinforcing part 211.

[0139] While reducing the dimension of the connecting pipe 20 along the length of the heat exchange plate 10 to improve the energy density of the battery device 1000, at least one first sidewall 21 is provided with a reinforcing part 211. This can improve the strength of the connecting pipe 20 on at least one side along the length of the heat exchange plate 10 by at least one reinforcing part 211, making the connecting pipe 20 and the connector 11 tightly connected without gaps, improving the sealing performance after the connecting pipe 20 and the connector 11 are connected, reducing the risk of heat exchange medium leakage, and also reducing the number of reinforcing parts 211, simplifying the structure of the connecting pipe 20, and reducing the dimension of the first sidewall 21 along the length of the heat exchange plate 10, thereby further reducing the space occupied by the connecting pipe 20 along the length of the heat exchange plate 10 and improving the energy density of the battery device 1000.

[0140] In some embodiments, such as Figures 3-5 and Figures 7-8 As shown, at least a portion of the first sidewall 21 is recessed into the connecting pipe 20 to form a reinforcing portion 211. In some embodiments, such as Figures 9-10 As shown, at least a portion of the first sidewall 21 protrudes outward from the connecting pipe 20 to form a reinforcing portion 211.

[0141] Making at least a portion of the first sidewall 21 recessed into the inside of the connecting pipe 20 or protruding outward from the connecting pipe 20 to form a reinforcing part 211 not only improves the strength of the first sidewall 21 and makes the connection between the connecting pipe 20 and the connector 11 tighter and more airtight, but also reduces the manufacturing difficulty of the connecting pipe 20 and makes it easier to promote and use.

[0142] In some embodiments of this utility model, such as Figures 2-5 and Figures 7-10 As shown, in the height direction of the battery device 1000, the connecting pipe 20 also has two opposingly arranged second sidewalls 22, the maximum thickness of the two second sidewalls 22 being X2. In the length direction of the heat exchange plate 10, a reinforcing part 211 is provided on one side of the connecting pipe 20, the maximum thickness of the reinforcing part 211 being Y2, where Y2 > X2.

[0143] By making Y2 > X2, the thickness X2 of the second sidewall 22 can be reduced and the strength Y2 of the reinforcing part 211 can be increased without affecting the overall strength of the connecting pipe 20. This allows the first sidewall 21 and the reinforcing part 211 to fit tightly with the connector 11, improving the tightness and sealing of the connection between the connecting pipe 20 and the connector 11, and reducing the risk of heat exchange medium leakage.

[0144] In some embodiments, such as Figures 9-10 As shown, along the length of the heat exchange plate 10, the connecting pipe 20 has two opposing first sidewalls 21, the outer surfaces of which protrude outward to form reinforcing portions 211. In other embodiments, such as Figures 3-5 and Figures 7-8 As shown, along the length of the heat exchange plate 10, the inner surface of the first sidewall 21 protrudes inward to form a reinforcing part 211.

[0145] Making the outer surface of the first sidewall 21 protrude outward or the inner surface of the first sidewall 21 protrude inward to form a reinforcing part 211 both help to increase the thickness of the first sidewall 21, thereby improving the strength of the first sidewall 21. This allows the first sidewall 21 to fit tightly with the connector 11 without being easily separated, while reducing the size of the connecting pipe 20 along the length of the heat exchange plate 10 to increase the energy density of the battery device 1000.

[0146] In some embodiments of this utility model, such as Figure 6 As shown, the connecting pipe 20 includes an inner sleeve 23 and an outer sleeve 24. The inner sleeve 23 defines a flow channel 231 for the flow of the heat exchange medium. The outer sleeve 24 is fitted over the inner sleeve 23. The outer sleeve 24 has a different hardness than the inner sleeve 23; the one with lower hardness can be deformed to mate with the connector 11 of the heat exchange plate 10.

[0147] By utilizing the hardness difference between the inner sleeve 23 and the outer sleeve 24, not only can the connecting pipe 20 be tightly fitted with the connector 11 and have good sealing performance, but it can also absorb a certain amount of assembly deviation, reduce assembly difficulty, and improve the assembly efficiency of the battery device 1000.

[0148] In some embodiments, the inner sleeve 23 and the outer sleeve 24 are formed by two-color injection molding. The two-color injection molding process allows two different materials to be injection molded into a single piece, broadening the range of materials that can be used for the inner sleeve 23 and the outer sleeve 24, facilitating the acquisition of raw materials for manufacturing the connecting pipe 20, reducing the manufacturing difficulty of the connecting pipe 20, and making the inner sleeve 23 and the outer sleeve 24 less prone to separation, resulting in better overall integrity of the connecting pipe 20.

[0149] In some embodiments, such as Figures 3-10 As shown, at least one of the inner sleeve 23 and the outer sleeve 24 is provided with a reinforcing part 211. By providing a reinforcing part 211 in at least one of the inner sleeve 23 and the outer sleeve 24, the connection strength and sealing performance between the connecting pipe 20 and the connector 11 can be improved by utilizing the hardness difference between the inner sleeve 23 and the outer sleeve 24, reducing assembly difficulty. At the same time, the reinforcing part 211 increases the strength of the connecting pipe 20, ensuring a tight fit between the reinforcing part 211 and the connector 11 without gaps, further improving the sealing performance after the connecting pipe 20 and the connector 11 are connected, and reducing the likelihood of heat exchange medium leakage.

[0150] Other configurations and operations of the battery device 1000, electrical equipment 2000, and connecting pipe 20 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0151] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0152] In the description of this specification, the references to terms such as "embodiment," "specific embodiment," and "example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0153] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device, characterized in that, include: Battery cell (200); Multiple heat exchange plates (10) are attached to one side surface of the battery cell (200) to exchange heat with the battery cell (200), and the heat exchange plates (10) have connectors (11); A connecting pipe (20) is provided, which is located between two adjacent heat exchange plates (10), and the end of the connecting pipe (20) is adapted to be connected to the connector (11). In the height direction of the battery device (1000), the maximum dimension of the connecting pipe (20) is X1; in the length direction of the heat exchange plate (10), the maximum dimension of the connecting pipe (20) is Y1, satisfying: X1 > Y1.

2. The battery device according to claim 1, characterized in that, One of the connecting pipe (20) and the connector (11) is provided with a reinforcing part (211), the reinforcing part (211) is located on one side of the connecting pipe (20) or the connector (11) in the length direction of the heat exchange plate (10), and the other of the connecting pipe (20) and the connector (11) is adapted to fit tightly against the reinforcing part (211).

3. The battery device according to claim 2, characterized in that, Along the length of the heat exchange plate (10), the connecting pipe (20) has two first sidewalls (21) arranged opposite to each other, and at least one of the first sidewalls (21) is provided with the reinforcing part (211).

4. The battery device according to claim 3, characterized in that, At least a portion of the first sidewall (21) is recessed into the interior of the connecting pipe (20) to form the reinforcing portion (211), or, At least a portion of the first sidewall (21) protrudes outward from the connecting pipe (20) to form the reinforcing portion (211).

5. The battery device according to claim 3, characterized in that, In the height direction of the battery device (1000), the connecting pipe (20) also has two oppositely arranged second sidewalls (22), the maximum thickness of the two second sidewalls (22) is X2; in the length direction of the heat exchange plate (10), the maximum thickness of the reinforcing part (211) is Y2, Y2 > X2.

6. The battery device according to claim 5, characterized in that, Along the length of the heat exchange plate (10), the outer surface of the first sidewall (21) protrudes outward to form the reinforcing part (211); or, the inner surface of the first sidewall (21) protrudes inward to form the reinforcing part (211).

7. The battery device according to claim 2, characterized in that, In the extending direction of the connecting pipe (20), the connecting pipe (20) includes a first segment (201), a second segment (202) and a third segment (203). The second segment (202) is located between the first segment (201) and the third segment (203). The cross-sectional dimensions of the first segment (201) and the third segment (203) gradually increase in the direction away from the second segment (202). The second segment (202) is provided with the reinforcing part (211).

8. The battery device according to any one of claims 1-7, characterized in that, The connecting pipe (20) includes: Inner sleeve (23), the interior of which defines an outlet channel (231). An outer sleeve (24) is fitted over the outer side of the inner sleeve (23), wherein, The outer sleeve (24) and the inner sleeve (23) have different hardnesses, and the one with lower hardness between the outer sleeve (24) and the inner sleeve (23) is adapted to deform to fit with the connector (11).

9. The battery device according to claim 8, characterized in that, The hardness of the inner sleeve (23) is lower than that of the outer sleeve (24), and the connector (11) is adapted to be inserted into the inner sleeve (23) and to be interference-fitted with the connecting pipe (20).

10. The battery device according to claim 8, characterized in that, The inner sleeve (23) and the outer sleeve (24) are formed by two-color injection molding.

11. The battery device according to claim 8, characterized in that, At least one of the inner sleeve (23) and the outer sleeve (24) is provided with a reinforcing part (211).

12. The battery device according to any one of claims 1-7, characterized in that, At least one connector (11) is provided at both ends of the heat exchange plate (10) along its length, and two adjacent heat exchange plates (10) are connected by two connecting pipes (20).

13. An electrical appliance, characterized in that, Includes the battery device (1000) according to any one of claims 1-12.

14. A connecting pipe, characterized in that, For connecting multiple heat exchange plates (10) in the battery device (1000), the maximum dimension of the connecting pipe (20) in the height direction of the battery device (1000) is X1; the maximum dimension of the connecting pipe (20) in the length direction of the heat exchange plate (10) is Y1, X1>Y1.

15. The communicating pipe according to claim 14, characterized in that, Along the length of the heat exchange plate (10), the connecting pipe (20) has two first sidewalls (21) arranged opposite to each other, and at least one of the first sidewalls (21) is provided with a reinforcing part (211).

16. The communicating pipe according to claim 15, characterized in that, At least a portion of the first sidewall (21) is recessed into the interior of the connecting pipe (20) to form the reinforcing portion (211), or, At least a portion of the first sidewall (21) protrudes outward from the connecting pipe (20) to form the reinforcing portion (211).

17. The communicating pipe according to claim 14, characterized in that, In the height direction of the battery device (1000), the connecting pipe (20) also has two second sidewalls (22) arranged opposite to each other, and the maximum thickness of the two second sidewalls (22) is X2; in the length direction of the heat exchange plate (10), a reinforcing part (211) is provided on one side of the connecting pipe (20), and the maximum thickness of the reinforcing part (211) is Y2, where Y2 > X2.

18. The communicating pipe according to claim 17, characterized in that, Along the length of the heat exchange plate (10), the connecting pipe (20) has two oppositely arranged first sidewalls (21), the outer surface of the first sidewall (21) protruding outward to form the reinforcing part (211); or, the inner surface of the first sidewall (21) protruding inward to form the reinforcing part (211).

19. The communicating pipe according to any one of claims 14-18, characterized in that, The connecting pipe (20) includes: Inner sleeve (23), the interior of which defines an outlet channel (231); An outer sleeve (24) is fitted over the outer side of the inner sleeve (23), wherein, The outer sleeve (24) and the inner sleeve (23) have different hardnesses, and the one with lower hardness of the outer sleeve (24) and the inner sleeve (23) is adapted to deform to fit with the connector (11) of the heat exchange plate (10).

20. The communicating pipe according to claim 19, characterized in that, The inner sleeve (23) and the outer sleeve (24) are formed by two-color injection molding.

21. The communicating pipe according to claim 19, characterized in that, At least one of the inner sleeve (23) and the outer sleeve (24) is provided with a reinforcing part (211).

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