WO2023201923A1

WO2023201923A1 - Water cooling plate assembly, water cooling system, battery and box body thereof, and electric device

Info

Publication number: WO2023201923A1
Application number: PCT/CN2022/107810
Authority: WO
Inventors: 宋飞亭
Original assignee: 宁德时代新能源科技股份有限公司
Priority date: 2022-04-18
Filing date: 2022-07-26
Publication date: 2023-10-26
Also published as: CN114497826A; CN114497826B

Abstract

Provided in the present application are a water cooling plate assembly, a water cooling system, a battery and a box body thereof, and an electric device. The water cooling plate assembly comprises a harmonica-shaped tubular plate, a first current collector and a second current collector. An outer layer cooling channel and an inner layer cooling channel located on an inner side of the outer layer cooling channel are formed in the harmonica-shaped tubular plate, wherein one of the outer layer cooling channel and the inner layer cooling channel is a liquid cooling channel. The first current collector is arranged at a first end of the harmonica-shaped tubular plate in a lengthwise direction and forms a first flow collecting space, which is in communication with a port of one end of the liquid cooling channel; and the first current collector is further provided with a first liquid inlet and a first liquid outlet for a cooling liquid to flow into and flow out of the first flow collecting space. The second current collector is arranged at a second end of the harmonica-shaped tubular plate in the lengthwise direction and forms a second flow collecting space, which is in communication with a port of the other end of the liquid cooling channel; and the second current collector is further provided with a second liquid inlet and a second liquid outlet for the cooling liquid to flow into and flow out of the second flow collecting space.

Description

Water-cooling plate components, water-cooling systems, batteries and their cases, and electrical devices

cross reference

This application cites Chinese patent application No. 202210401809. Apply.

Technical field

The present application relates to the field of battery technology, and in particular to a water-cooling plate assembly, a water-cooling system, a battery and its box, and an electrical device.

Background technique

At present, judging from the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles and electric cars, as well as in many fields such as military equipment and aerospace. . As the application fields of power batteries continue to expand, their market demand is also constantly expanding.

During the use of the battery, the battery cells in the battery will generate heat. If the heat is too high, it will adversely affect the performance and service life of the battery. Therefore, how to effectively dissipate heat from battery cells has become an important research direction in this field.

Contents of the invention

This application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to propose a water-cooling plate assembly to improve the cooling effect of the battery cells in the battery.

An embodiment of the first aspect of the present application provides a water-cooled plate assembly, including: a harmonica tube plate, in which an outer cooling channel and an inner cooling channel located inside the outer cooling channel are formed, and the outer cooling channel and the inner cooling channel are The channels are all extended along the length direction of the harmonica tube plate, wherein one of the outer cooling channel and the inner cooling channel is a liquid cooling channel; the first current collector is arranged at the third current collector in the length direction of the harmonica tube plate. One end is also formed with a first collecting space connected to one end port of the liquid cooling channel, and the first collecting space is also formed with a first liquid inlet and a first liquid outlet for cooling liquid to flow into and out of the first collecting space. and a second current collector, which is arranged at the second end opposite to the first end in the length direction of the harmonica tube plate and forms a second current collector space connected with the other end port of the liquid cooling channel, the second collector The fluid is also formed with a second liquid inlet and a second liquid outlet for cooling liquid to flow into and out of the second collecting space.

In the technical solution of the embodiment of the present application, the harmonica tube plate of the water-cooled plate assembly has two layers of inner and outer cooling channels, one of which can be a non-liquid cooling channel. Since the interior of this non-liquid cooling channel is not filled with coolant, the channel wall can be appropriately deformed toward the internal space of the channel, so that the two sides in the thickness direction of the harmonica tube plate can absorb the expansion of the battery cells and prevent the battery cells from being squeezed. Pressure damage.

In some embodiments, the outer cooling channel is a liquid cooling channel, and the inner cooling channel is an air cooling channel.

Due to the simultaneous presence of liquid cooling channels and air-cooling cooling channels, the water-cooling plate assembly can cool the battery cells in two cooling methods, thus improving the cooling effect.

In some embodiments, the first current collector includes: a first housing; and a first channel portion, which is disposed inside the first housing, one end of which is connected to an end port of the air-cooling cooling channel, and the other end of which is connected to the first housing. outside, wherein the inner surface of the first housing and the outer surface of the first channel portion jointly define a first collecting space, and the second collecting space includes: a second housing; and a second channel portion disposed inside the second housing , one end of which is connected to the other end port of the air-cooling cooling channel, and the other end of which is connected to the outside of the second housing, wherein the inner surface of the second housing and the outer surface of the second channel portion jointly define a second collecting space.

By arranging the first housing and the first channel part, two separate spaces are formed inside the first current collector, namely, the first current collector space and the space in the first channel part. The above two spaces are used to transport cooling liquid and cooling air flow to the cooling tube plate respectively, thereby ensuring that the two cooling methods can operate independently without interfering with each other. Similarly, by arranging the second shell and the second channel part, two separate spaces are formed inside the second current collector, thereby ensuring that the two cooling methods can operate independently.

In some embodiments, an end of the first channel portion connected to the outside of the first housing forms a first air duct opening on the first housing to allow cooling air to flow in and out of the air-cooling cooling channel, and the second channel portion is connected to the second housing. The outer end forms a second air duct opening on the second shell to allow cooling air to flow in and out of the air-cooling cooling channel.

By forming the first air duct opening on the first shell, the cooling airflow is facilitated to enter the first channel portion. Later, an additional air duct connected to the first air duct opening can be provided outside the cooling plate assembly to further facilitate the input of cooling air flow.

In some embodiments, the first air duct opening is disposed on a side of the first shell away from the harmonica pipe plate in the length direction of the harmonica pipe plate, and the second air duct opening is disposed on the second shell in the length direction of the harmonica pipe plate. on the side away from the harmonica tube plate.

The air duct openings in the above embodiment are arranged in such a way that the external air supply device can input the cooling air flow from one side of the length direction of the assembled water cooling system and output the heat-exchanged air flow from the other side of the length direction of the water cooling system, thereby optimizing It improves the overall structure of the water cooling system and makes the air flow smoother.

In some embodiments, a first opening is formed on a side of the first shell facing the harmonica tube plate for clamping the first end of the harmonica tube plate inside the first opening, and the second shell faces the harmonica tube plate. A second opening is formed on one side for clamping the second end of the harmonica tube plate to the inside of the second opening.

By providing the first opening and the second opening, it is convenient for the two ends of the harmonica tube plate to be connected to the first current collector and the second current collector respectively.

In some embodiments, the first liquid inlet and the first liquid outlet are respectively disposed on both sides of the first shell in the thickness direction of the harmonica tube plate; and the second liquid inlet and the second liquid outlet are respectively disposed on The second shell is on both sides in the thickness direction of the harmonica tube plate.

Since the liquid inlet and liquid outlet of the water-cooling plate assembly are both arranged on both sides of the harmonica tube plate thickness direction of the water-cooling plate assembly, when multiple water-cooling plate assemblies are assembled into a water-cooling system, due to the liquid inlet of each water-cooling plate assembly The unique placement of the port and liquid outlet allows the harmonica tube plates of multiple water-cooling plate assemblies to be assembled parallel and spaced apart from each other. This allows the battery cell to be placed between two adjacent water-cooling plate assemblies arranged in parallel and spaced apart to achieve cooling of both sides of the battery cell. This setting can improve the cooling efficiency of the battery cells and achieve a balanced cooling effect on the top and bottom of the battery cells.

In some embodiments, the projections of the first liquid inlet and the first liquid outlet on a reference plane coincide with each other, wherein the reference plane is a plane parallel to the sides on both sides of the harmonica tube plate in the thickness direction; and the second liquid inlet The projections of the port and the second liquid outlet on the reference plane coincide.

This arrangement ensures that when multiple water-cooling plate assemblies are assembled into a water-cooling system, the liquid inlets and liquid outlets of two adjacent water-cooling plate assemblies are at the same level to facilitate the connection between two adjacent water-cooling plate assemblies. .

In some embodiments, the inner cooling channel is a liquid cooling channel, and the outer cooling channel is an air cooling channel.

In some embodiments, the first current collector includes: a first housing, the interior of which forms a first collection space; and the second current collector includes: a second housing, the interior of which forms a second collection space.

The first casing is provided to form a first collecting space, and the first collecting space is used to transport cooling liquid to the cooling tube plate, thereby ensuring that the two cooling methods of liquid cooling and air cooling can operate independently without interfering with each other.

In some embodiments, reinforcement structures are provided in the liquid cooling channels.

Since liquid coolant cannot be compressed, if the liquid cooling channel is deformed too much, the coolant inside it may leak, or the harmonica tube plate may be damaged. Therefore, by providing the above-mentioned reinforced structure, it can be ensured that the liquid-cooling cooling channel is not easily deformed, thereby absorbing the expansion of the battery cells only through the non-liquid-cooling cooling channel.

In some embodiments, the reinforcing structure is a plurality of support ribs.

The support rib structure further strengthens the structural strength of the liquid cooling cooling channel and prevents the liquid cooling cooling channel from deforming.

In some embodiments, one of the outer cooling channel and the inner cooling channel is a liquid cooling channel, and the other is filled with phase change material.

Filling the non-liquid cooling cooling channels with phase change materials can increase the heat capacity of the entire water-cooled plate assembly and is used to insulate the battery cells or absorb heat.

In some embodiments, one of the outer cooling channel and the inner cooling channel is a liquid cooling channel, and the other is filled with elastic material.

Filling the non-liquid cooling channels with elastic materials can achieve a rebound function after deformation of the harmonica tube plate, or increase the support strength.

An embodiment of the second aspect of the present application provides a water-cooling system, including the above-mentioned water-cooling plate assembly, wherein a plurality of water-cooling plate assemblies are arranged side by side and spaced apart. For any two adjacent water-cooling plate assemblies among the plurality of water-cooling plate assemblies: The first liquid inlet and the second liquid outlet of one of the two adjacent water-cooled plate assemblies are respectively connected with the first liquid outlet and the second liquid inlet of the other water-cooled plate assembly to achieve adjacent Connection between two water-cooled plate assemblies.

The water-cooling system of this embodiment can form a cooling liquid circulation system by connecting multiple water-cooling plate assemblies, thereby facilitating the circulation of cooling liquid therein.

In some embodiments, the above-mentioned water cooling system further includes: a plurality of connecting pipes, each of the plurality of connecting pipes is used to connect the first liquid inlet and the first liquid outlet of two adjacent water-cooling plate assemblies or with The second liquid inlet and the second liquid outlet of two adjacent water-cooled plate assemblies are connected, wherein the first liquid inlet, the second liquid inlet, the first liquid outlet and the first liquid inlet of each water-cooled plate assembly of the water-cooling system. The second liquid outlets each form a flange extending toward the outside of the water-cooled plate assembly. The flanges are inserted into the interior of the corresponding connecting pipe to realize the first liquid inlet, the second liquid inlet, and the first liquid outlet. Or the connection between the second liquid outlet and the connecting pipe.

By connecting the liquid inlet and outlet of the two adjacent water-cooling plate assemblies at the front and rear with the connecting pipe, the connection strength between the water-cooling plate assemblies is improved, and at the same time, a certain degree of contact between the adjacent water-cooling plate assemblies is ensured. Gap, used to accommodate battery cells.

A third embodiment of the present application provides a battery box. The box is used to accommodate battery cells and includes the above-mentioned water-cooling plate assembly. The water-cooling plate assembly is close to the battery cells to cool the battery cells.

An embodiment of the fourth aspect of the present application provides a battery, which includes a battery cell and a case of the battery of the above embodiment, and the case is used to accommodate the battery cell.

The embodiment of the fifth aspect of the present application provides a battery, which includes the water cooling system of the above embodiment; and a plurality of battery cells, at least some of the battery cells of the plurality of battery cells are arranged on two adjacent ones of the water cooling system. In the gap between the water-cooling plate assemblies, two opposite sides of each battery cell in at least part of the battery cells are respectively abutted against the harmonica tube plates of two adjacent water-cooling plate assemblies, so that the water-cooling system is effective for each battery. Two opposite sides of the monomer are cooled.

In the battery of this embodiment, the two adjacent water-cooling plate assemblies of the water-cooling system can cool the two opposite sides of each battery cell respectively, thereby improving the cooling efficiency of the battery cell, and at the same time, the upper and lower sides of the battery cell can be realized. Balanced cooling effect.

An embodiment of the sixth aspect of the present application provides an electrical device, which includes the battery in the above embodiment, and the battery is used to provide electric energy.

The above description is only an overview of the technical solutions of the present application. In order to have a clearer understanding of the technical means of the present application, they can be implemented according to the content of the description, and in order to make the above and other purposes, features and advantages of the present application more obvious and understandable. , the specific implementation methods of the present application are specifically listed below.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the drawings required to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. Those of ordinary skill in the art can also obtain other drawings based on the drawings without exerting creative efforts.

In the drawings, unless otherwise specified, the same reference numbers refer to the same or similar parts or elements throughout the several figures. The drawings are not necessarily to scale. It should be understood that these drawings depict only some embodiments disclosed in accordance with the present application and should not be considered as limiting the scope of the present application.

Figure 1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

Figure 2 is a schematic diagram of the exploded structure of a battery according to some embodiments of the present application;

Figure 3 is a schematic structural diagram of a water-cooled plate assembly according to some embodiments of the present application;

Figure 4 is a schematic exploded structural diagram of a water-cooling plate assembly according to some embodiments of the present application;

Figure 5 is a schematic structural diagram of the harmonica tube plate of the water-cooled plate assembly according to some embodiments of the present application;

Figure 6 is a schematic structural diagram of the first current collector of the water-cooling plate assembly according to some embodiments of the present application;

Figure 7 is a schematic structural diagram of the first current collector of the water-cooling plate assembly of some embodiments of the present application from another perspective;

Figure 8 is a schematic exploded structural diagram of a water-cooling plate assembly according to other embodiments of the present application;

Figure 9 is a schematic structural diagram of a water cooling system according to other embodiments of the present application.

Explanation of reference symbols:

vehicle1;

Battery 10, controller 20, motor 30;

Box 100, first part 110, second part 120, water cooling system 130;

Battery cells 200;

Water cooling plate assembly 300; first current collector 310, second current collector 320, first liquid inlet 330, first liquid outlet 340; second liquid outlet 360; harmonica tube plate 370;

Inner cooling channel 371; outer cooling channel 372; reinforcing structure 373; reinforcing

ribs

373a, 373b, 373c; inner wall 374; plate shell 375;

The first housing 311; the first channel portion 312; the first air duct opening 313;

Connecting pipe 400.

Detailed ways

The embodiments of the technical solution of the present application will be described in detail below with reference to the accompanying drawings. The following examples and drawings are only used to illustrate the technical solution of the present application more clearly, and are therefore only used as examples and cannot be used to limit the scope of protection of the present application. The drawings only schematically show the parts related to the technical solution of the present application, and they do not represent the actual structure of the product.

Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the technical field belonging to this application; the terms used herein are for the purpose of describing specific embodiments only and are not intended to be used in Limitation of this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the above description of the drawings are intended to cover non-exclusive inclusion.

In the description of the embodiments of this application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. A specific order or priority relationship.

Reference herein to "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of this phrase 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 skilled in the art understand, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of this application, the term "and/or" is only an association relationship describing associated objects, indicating that there can be three relationships, such as A and/or B, which can mean: A exists alone, and A exists simultaneously and B, there are three cases of B alone. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

In the description of the embodiments of this application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to It is more than two pieces (including two pieces).

In the description of the embodiments of this application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back" , "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis", " The orientations or positional relationships indicated by "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and are not intended to indicate or imply the devices or devices referred to. Elements must have a specific orientation, be constructed and operate in a specific orientation, and therefore are not to be construed as limitations on the embodiments of the present application.

In the description of the embodiments of this application, unless otherwise explicitly stated and limited, technical terms such as "installation", "connection", "connection", and "fixing" should be understood in a broad sense. For example, it can be a fixed connection, or a fixed connection. It can be detachably connected or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary; it can be the internal connection of two elements or the interaction of two elements. relation. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

The applicant noticed that during the use of the battery, the battery cells will generate heat. If the heat is too high, it will adversely affect the performance and service life of the battery. In related technologies, a cooling system can be set up to cool the battery cells in the battery. The above-mentioned cooling system may include a plurality of water-cooling plates laid at the bottom of the battery box, and the upper surfaces of the plurality of water-cooling plates are in contact with the lower surfaces of the battery cells in the battery. During use, cooling fluid such as water flows through the above-mentioned plurality of water-cooling plates, thereby taking away heat from the battery cells and cooling the battery cells.

However, the applicant's research found that the water-cooling plate in the related art is in close contact with the surface of the battery cell in order to achieve better heat dissipation effect. Battery cells will expand during use, and these expansions may increase as the battery is used longer, causing it to squeeze the water-cooling plate and receive reaction force from the water-cooling plate. The water-cooling plate in the related art does not have the function of absorbing the expansion volume of the battery cell. Therefore, when the battery cell expands excessively, the squeezing force of the water-cooling plate on the battery cell may damage the battery cell structure.

Based on the above considerations, in order to solve the problem of battery cell expansion, the applicant has designed a water-cooling plate assembly after in-depth research. The harmonica tube plate of this water-cooling plate assembly includes two layers of cooling channels, both inner and outer. One of the cooling channels (inner cooling channel or outer cooling channel) is a non-liquid cooling cooling channel, so it can be compressed and deformed. When the battery cells expand, this layer of non-liquid cooling channels can be used to absorb the expansion of the battery cells, thereby reducing the squeezing force of the water-cooling plate on the battery cells and avoiding damage to the battery cells.

The battery cells disclosed in the embodiments of the present application can be used in, but are not limited to, electrical devices such as vehicles, ships, or aircrafts. The power supply system of the electrical device can be composed of the water-cooling plate assembly, water-cooling system, battery, etc. disclosed in this application. This will help alleviate the expansion of the battery cells and improve the stability of battery performance and battery life.

Embodiments of the present application provide an electrical device that uses a battery as a power source. The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric vehicle, a ship, a spacecraft, etc. Among them, electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, electric airplane toys, etc., and spacecraft can include airplanes, rockets, space shuttles, spaceships, etc.

For the convenience of explanation in the following embodiments, an electrical device in an embodiment of the present application is a vehicle 1 as an example.

Please refer to Figure 1 , which is a schematic structural diagram of a vehicle 1 provided by some embodiments of the present application. Vehicle 1 may be a fuel vehicle, a gas 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, etc. The battery 10 is disposed inside the vehicle 1 , and the battery 10 can be disposed at the bottom, head, or tail of the vehicle 1 . The battery 10 may be used to power the vehicle 1 , for example, the battery 10 may serve as an operating power source for the vehicle 1 . The vehicle 1 may also include a controller 20 and a motor 30 . The controller 20 is used to control the battery 10 to provide power to the motor 30 , for example, to meet the power requirements for starting, navigation and driving of the vehicle 1 .

In some embodiments of the present application, the battery 10 can not only be used as an operating power source of the vehicle 1 , but also can be used as a driving power source of the vehicle 1 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1 .

Please refer to FIG. 2 , which is an exploded view of the battery 10 provided in some embodiments of the present application. The battery 10 includes a case 100 and battery cells 200. The battery cells 200 are accommodated in the case 100. Among them, the box 100 is used to provide an accommodation space for the battery cells 200, and the box 100 can adopt a variety of structures. In some embodiments, the box 100 may include a first part 110 and a second part 120 , the first part 110 and the second part 120 cover each other, and the first part 110 and the second part 120 jointly define a space for accommodating the battery cell 200 of accommodation space. The second part 120 may be a hollow structure with one end open, and the first part 110 may be a plate-like structure. The first part 110 covers the open side of the second part 120 so that the first part 110 and the second part 120 jointly define a receiving space. ; The first part 110 and the second part 120 may also be hollow structures with one side open, and the open side of the first part 110 is covered with the open side of the second part 120. Of course, the box 100 formed by the first part 110 and the second part 120 can be in various shapes, such as a cylinder, a cuboid, etc.

In the battery 10 , there may be a plurality of battery cells 200 , and the plurality of battery cells 200 may be connected in series, in parallel, or in mixed connection. Mixed connection means that the plurality of battery cells 200 are connected in series and in parallel. Multiple battery cells 200 can be directly connected in series or in parallel or mixed together, and then the whole composed of multiple battery cells 200 can be accommodated in the box 100 ; of course, the battery 10 can also be multiple battery cells 200 The battery modules are first connected in series, parallel, or mixed to form a battery module, and then multiple battery modules are connected in series, parallel, or mixed to form a whole, and are accommodated in the box 100 . The battery 10 may also include other structures. For example, the battery 10 may further include a bus component for realizing electrical connections between multiple battery cells 200 .

Each battery cell 200 may be a secondary battery or a primary battery; it may also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 200 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped or other shapes.

This application first provides a water-cooling plate assembly 300. As shown in Figures 3 and 4, Figure 3 is a schematic structural diagram of a water-cooled plate assembly 300 in some embodiments of the present application, and Figure 4 is a schematic exploded structural diagram of a water-cooled plate assembly 300 in some embodiments of the present application. The water-cooling plate assembly 300 includes: a harmonica tube plate 370 , a first current collector 310 and a second current collector 320 . As shown in Figure 4, an outer cooling channel 372 and an inner cooling channel 371 located inside the outer cooling channel 372 are formed inside the harmonica tube plate 370. The outer cooling channel 372 and the inner cooling channel 371 are both along the harmonica tube plate. 370 extends in the length direction (that is, extends along the X direction shown in FIG. 4 ). One of the outer cooling channel 372 and the inner cooling channel 371 is a liquid cooling channel. The first current collector 310 is disposed at the first end of the harmonica tube plate 370 in the length direction and forms a first collection space connected to one end port of the liquid cooling channel. The first current collector 310 is also formed with a space for cooling liquid to flow into. and a first liquid inlet 330 and a first liquid outlet 340 flowing out of the first collecting space. The second current collector 320 is disposed at the second end opposite to the first end in the length direction of the harmonica tube plate 370 and forms a second current collector space connected to the other end port of the liquid cooling channel. The second current collector 320 A second liquid inlet (not shown due to obstruction) and a second liquid outlet 360 for cooling liquid to flow into and out of the second collecting space are also formed.

As shown in Figure 4, the harmonica tube plate 370 has a length direction (shown in the X-axis direction in Figure 4), a width direction (shown in the Y-axis direction in Figure 4), and a thickness direction (shown in the Z-axis direction in Figure 4). Show). The inside of the harmonica tube plate 370 forms two layers of cooling channels: an outer layer and an inner layer. The above two layers of cooling channels are extended along the X direction in the figure. Figure 5 is a schematic structural diagram of the harmonica tube plate 370 of the water-cooling plate assembly 300 in some embodiments of the present application. As shown in Figure 5, the harmonica tube plate 370 includes: a plate outer shell 375 and a rectangular inner wall 374. The outer cooling channel 372 is jointly defined by the plate shell 375 and the rectangular inner wall 374 provided inside the harmonica tube plate 370, and the inner cooling channel 371 is defined by the rectangular inner wall 374. Therefore, the outer cooling channel 372 has an annular cross-section and surrounds the inner cooling channel 371 . Both layers of cooling channels have two ports, and the two ports face the first current collector 310 and the second current collector 320 respectively. One of the above two layers of cooling channels is a liquid cooling channel, and the cooling liquid will flow into the liquid cooling channel and cool the battery cells 200 . The other layer of the two layers of cooling channels is a non-liquid cooling channel, and the cooling liquid will not flow into the non-liquid cooling channel. In some embodiments, the outer cooling channel 372 may be a liquid cooling channel, and the inner layer may be a non-liquid cooling channel. In other embodiments, the inner cooling channel 371 may be a liquid cooling channel, while the outer layer may be a liquid cooling channel. Non-liquid cooling channels.

The first current collector 310 and the second current collector 320 are respectively disposed at the first end and the second end of the harmonica tube plate 370 in the length direction. The first current collector 310 includes a first housing 311 having a first collection space inside. The first housing 311 is open on one side facing the harmonica tube plate 370 for connecting the first end of the harmonica tube plate 370 . One end port of the liquid cooling channel of the harmonica tube plate 370 is connected to the first collecting space. The second current collecting body 320 includes a second housing with a second collecting space inside. The second housing is open to a side facing the harmonica tube plate 370 for connecting the second end of the harmonica tube plate 370 . The other end port of the liquid cooling channel of the harmonica tube plate 370 is connected to the second header space. In some embodiments, the first current collector 310 and the second current collector 320 have the same size and shape, and are symmetrically arranged at both ends in the length direction of the harmonica tube plate 370 .

The harmonica tube plate 370 of the water-cooling plate assembly 300 has two layers of inner and outer cooling channels, one of which can be a non-liquid cooling channel. Since the interior of the non-liquid cooling channel is not filled with cooling liquid, the channel wall can be appropriately deformed toward the inner space of the channel, so that the two sides in the thickness direction of the harmonica tube plate 370 can absorb the expansion of the battery cells 200 and avoid the expansion of the battery cells. 200 was damaged by crushing.

According to some embodiments of the present application, the outer cooling channel 372 is a liquid cooling channel, and the inner cooling channel 371 is an air cooling channel.

The inner and outer cooling channels of the harmonica tube plate 370 can be respectively a liquid cooling channel and an air cooling channel. Subsequently, cooling airflow can be input into the air cooling channel to air-cool the battery cells 200 . The air-cooling cooling channel itself is compressible, so the cross section of the channel can be appropriately deformed so that the harmonica tube plate 370 can absorb the expansion of the battery cell 200 .

Due to the simultaneous existence of liquid-cooling cooling channels and air-cooling cooling channels, the water-cooling plate assembly 300 can cool the battery cells 200 in two cooling methods, thereby improving the cooling effect.

According to some embodiments of the present application, as shown in Figures 6 and 7, Figure 6 is a schematic structural diagram of the first current collector 310 of the water-cooling plate assembly 300 in some embodiments of the present application; Figure 7 is a schematic diagram of the water-cooling plate assembly 310 in some embodiments of the present application. A schematic structural diagram of the first current collector 310 of the plate assembly 300 from another perspective. The first current collector 310 includes a first housing 311 and a first channel portion 312 . The first channel portion 312 is provided inside the first housing 311 , one end thereof is connected to one end port of the air-cooling cooling channel, and the other end thereof is connected to the outside of the first housing 311 . The inner surface of the first housing 311 and the outer surface of the first channel portion 312 jointly define a first collecting space. The second current collector 320 includes a second housing and a second channel portion. The second channel portion is provided inside the second housing, one end of which is connected to the other end port of the air-cooling cooling channel, and the other end of which is connected to the outside of the second housing. The inner surface of the second housing and the outer surface of the second channel portion jointly define a second collecting space.

In this embodiment, the first housing 311 may be a rectangular parallelepiped structure with a hollow interior. The first housing 311 is open toward the side of the harmonica tube plate 370 . The first channel portion 312 is provided in the hollow portion of the first housing 311 . The first channel portion 312 is approximately tubular and has two ports. The two ports are respectively connected to one end port of the ventilation and cooling channel facing the first current collector 310 and the outside of the first housing 311 , so that the outside of the first housing 311 can be connected. The cooling air flow is introduced into the air-cooling cooling channel or the cooling air flow is discharged from the air-cooling cooling channel. The cross section of the first channel portion 312 is rectangular and is similar to the cross section of the air-cooling cooling channel to facilitate communication between the two. The ports of the first channel portion 312 may be welded to the ports of the air-cooling cooling channels, or the ports of the first channel portion 312 and the ports of the air-cooling cooling channels may be provided with complementary snap features (e.g., the ports of the first channel portion 312 A flange is provided on the inside, and a recess is provided on the outside of the port of the air-cooling cooling channel) to ensure the snap fit between the first channel portion 312 and the air-cooling cooling channel. The first collecting space is a space defined between the inner surface of the first housing 311 and the outer surface of the first channel portion 312. This space is only connected to the liquid cooling channel on the outer layer of the harmonica tube plate 370 and is used to transfer the cooling liquid. Inputs coolant to or outputs coolant from liquid cooling channels. Although in this embodiment, the first housing 311 and the first channel part 312 are both shown as rectangular parallelepiped structures, in other embodiments, the first housing 311 and the first channel part 312 may also be a cylinder, etc. For other shapes, as long as the first collecting space is connected to the outer liquid-cooling cooling channel, and the first channel portion 312 is connected to the inner air-cooling cooling channel.

The specific arrangement of the second housing and the second channel part is similar to the arrangement of the first housing 311 and the first channel part 312, and will not be described again here. The second current collector 320 may be disposed in a completely symmetrical manner with the first current collector 310 .

By arranging the first housing 311 and the first channel portion 312 , two separate spaces are formed inside the first current collecting space 310 , namely, the first current collecting space and the space in the first channel portion 312 . The above two spaces are used to transport cooling liquid and air flow to the cooling tube plate respectively, thereby ensuring that the two cooling methods can operate independently without interfering with each other. Similarly, by arranging the second shell and the second channel part, two separate spaces are formed inside the second current collector 320, thereby ensuring that the two cooling methods can operate independently.

As shown in Figure 7, according to some embodiments of the present application, an end of the first channel portion 312 connected to the outside of the first housing 311 forms a first air duct opening 313 on the first housing 311 to allow cooling airflow in and out for air cooling. aisle. One end of the second channel portion connected to the outside of the second housing forms a second air duct opening on the second housing to allow cooling air to flow in and out of the air-cooling cooling channel.

The first channel part 312 may be integrally formed with the first housing 311. For example, the first channel part 312 may be formed by punching the first housing 311. The connection portion of the first channel portion 312 on the first housing 311 forms a first air duct opening 313, and external cooling airflow can enter the first channel portion 312 through the first air duct opening 313.

The specific structures of the second housing and the second channel part are similar to the structures of the first housing 311 and the first channel part 312, and will not be described again here. The second current collector 320 may be disposed in a completely symmetrical manner with the first current collector 310 .

By forming the first air duct opening 313 on the first housing 311 , the cooling airflow is facilitated to enter the first channel portion 312 . Subsequently, an additional air duct connected to the first air duct opening 313 can be provided outside the cooling plate assembly to facilitate further input of cooling airflow.

The first air duct opening 313 is provided on the side of the first shell 311 away from the harmonica tube plate 370 in the length direction of the harmonica tube plate 370 . The second air duct opening is provided on the side of the second shell away from the harmonica tube plate 370 in the length direction of the harmonica tube plate 370 .

As mentioned above, the first housing 311 is a rectangular parallelepiped, and the first air duct opening 313 is formed on the side of the rectangular parallelepiped away from the harmonica tube plate 370 . When the plurality of water-cooling plate assemblies 300 are subsequently assembled into the water-cooling system 130, the plurality of first air duct openings 313 are arranged on one side of the length direction of the assembled water-cooling system 130. An external air supply device for generating cooling airflow may blow air toward this side of the water cooling system 130 to deliver the cooling airflow to each water cooling plate assembly 300 respectively. Similarly, a plurality of second air duct openings will be arranged on the other side of the length direction of the assembled water cooling system 130 . The air flow after heat exchange with the battery cells will be discharged from this side of the water cooling system 130 .

The arrangement of the air duct openings in the above embodiment facilitates the external air supply device to input the cooling air flow from one side of the length direction of the assembled water cooling system 130 and to output the heat-exchanged air flow from the other side of the length direction of the water cooling system 130. This optimizes the overall structure of the water cooling system 130 and makes the air flow smoother.

A first opening is formed on the side of the first housing 311 facing the harmonica tube plate 370 for clamping the first end of the harmonica tube plate 370 to the inside of the first opening. A second opening is formed on the side of the second housing facing the harmonica tube plate 370 for clamping the second end of the harmonica tube plate 370 to the inside of the second opening.

The cross-section of the first shell 311 may be slightly larger than the cross-section of the harmonica tube plate 370 , thereby facilitating the first shell 311 to be fastened to one end of the harmonica tube plate 370 . The first opening matches the cross section of the plate shell 375 of the harmonica tube plate 370. As shown in Figure 5, the cross section of the plate shell 375 can be an oblate shape with semicircles at both ends. Then the first opening can also be in the above shape. , so as to match and snap with the harmonica tube plate 370. The inside edge of the first opening may be provided with snapping features (eg, snapping flanges) to enhance the connection with the harmonica tube plate 370. The shape of the second opening is similar to that of the first opening, and will not be described again here. Although in this embodiment, the two ends of the harmonica tube plate 370 are snap-connected to the first current collector 310 and the second current collector 320 respectively, in other embodiments, the harmonica tube plate 370 can also be connected by other means such as welding. The tube sheet 370 is connected to the first current collector 310 and the second current collector 320 respectively.

By providing the first opening and the second opening, it is convenient for the two ends of the harmonica tube plate 370 to be connected to the first current collector 310 and the second current collector 320 respectively.

The first liquid inlet 330 and the first liquid outlet 340 are respectively provided on both sides of the first shell 311 in the thickness direction of the harmonica tube plate 370 . The second liquid inlet and the second liquid outlet 360 are respectively provided on both sides of the second shell in the thickness direction of the harmonica tube plate 370 .

As mentioned above, the first housing 311 and the second housing are both in the shape of a rectangular parallelepiped. The first liquid inlet 330 and the first liquid outlet 340 are respectively provided on the front and rear sides of the first housing 311. The second liquid inlet The opening and the second liquid outlet 360 are respectively provided on the front and rear sides of the second housing.

Since the liquid inlet and outlet of the water-cooling plate assembly 300 are both disposed on both sides in the thickness direction of the harmonica tube plate 370 of the water-cooling plate assembly 300, when multiple water-cooling plate assemblies 300 are assembled into the water-cooling system 130, since each The unique position of the liquid inlet and outlet of the water-cooling plate assembly 300 allows the harmonica tube plates 370 of multiple water-cooling plate assemblies 300 to be assembled parallel and spaced apart from each other. Therefore, the battery cell 200 can be placed between two adjacent water-cooling plate assemblies 300 arranged in parallel and spaced apart to achieve cooling of both sides of the battery cell 200 . Such an arrangement can improve the cooling efficiency of the battery cell 200 and achieve a balanced cooling effect on the upper and lower sides of the battery cell 200 .

In some embodiments, the projections of the first liquid inlet 330 and the first liquid outlet 340 on a reference plane are coincident, wherein the reference plane is a plane parallel to the side surfaces on both sides of the harmonica tube plate 370 in the thickness direction. The projections of the second liquid inlet and the second liquid outlet 360 on the reference plane coincide with each other.

As further shown in FIGS. 6 and 7 , the projections of the first liquid inlet 330 and the first liquid outlet 340 on the reference plane coincide with each other, which means that the first liquid inlet 330 and the first liquid outlet 340 are disposed on the first set. at the same height of the fluid 310; the projections of the second liquid inlet and the second liquid outlet 360 on the reference plane coincide with each other, which means that the second liquid inlet and the second liquid outlet 360 are arranged at the same height of the second current collector 320 superior. In some embodiments, the first liquid inlet 330 , the first liquid outlet 340 , the second liquid inlet and the second liquid outlet 360 may be disposed in the height direction of the first current collector 310 or the second current collector 320 . at the middle position.

This arrangement makes it possible that when multiple water-cooling plate assemblies 300 are assembled into the water-cooling system 130, the liquid inlets and liquid outlets of two adjacent water-cooling plate assemblies 300 are at the same level, so that the two adjacent water-cooling plate assemblies 300 can the connection between.

FIG. 8 is a schematic exploded view of the water-cooling plate assembly 300 in other embodiments of the present application. In some embodiments, as shown in FIG. 8 , the inner cooling channel 371 is a liquid-cooling cooling channel, and the outer cooling channel 372 is an air-cooling channel. Cooling channels.

Contrary to the embodiment of FIG. 4 , the inner cooling channel 371 of the embodiment shown in FIG. 8 is a liquid-cooling cooling channel, and the outer cooling channel 372 is an air-cooling cooling channel. The gas in the outer air-cooling cooling channel is compressible and therefore can be deformed appropriately so that the harmonica tube plate 370 can absorb the expansion of the battery cells.

In the embodiment shown in FIG. 8 , the first current collector 310 includes: a first housing, the inside of which forms a first current collection space. The second current collector 320 includes: a second housing, the interior of which forms a second current collector space.

As shown in FIG. 8 , for the case where the inner cooling channel 371 is a liquid cooling channel, the sizes of the first and second housings of the first and second

current collectors

310 and 320 can be set relatively small, so that The outer shell is only connected to the port of the inner cooling channel 371 . In addition, different from the embodiment shown in FIG. 4 , the first current collector 310 and the second current collector 320 may not have the first channel part 312 and the second channel part. Therefore, the air-cooling cooling channel on the outer layer is directly exposed, so that the external air supply device directly supplies air toward the port of the air-cooling cooling channel.

The first casing is provided to form a first collecting space, and the first collecting space is used to transport cooling liquid to the harmonica tube plate 370, thereby ensuring that the two cooling methods of liquid cooling and air cooling can operate independently without interfering with each other.

In some embodiments, reinforcement structures 373 are provided in the liquid cooling channels.

As shown in Figures 4, 5 and 8, the above-mentioned reinforcing structure 373 is only provided in the liquid cooling channel to ensure that the structure of the liquid cooling channel is strong and not easily deformed. However, there is no reinforcing structure 373 in the non-liquid cooling channel so that when the battery cell 200 expands, it can shrink and deform inward to absorb the expansion of the battery cell 200 .

Since liquid coolant cannot be compressed, if the liquid cooling channel undergoes excessive deformation, the coolant inside the channel may leak, or the harmonica tube plate 370 may be damaged. Therefore, by providing the above-mentioned reinforcing structure 373, it can be ensured that the liquid-cooling cooling channel is not easily deformed, so that the expansion of the battery cell 200 is absorbed only through the non-liquid-cooling cooling channel.

In some embodiments, the reinforcing structure 373 is a plurality of support ribs.

As shown in Figures 4, 5 and 8, the above-mentioned plurality of support ribs are arranged in the liquid cooling channel. As shown in FIG. 5 , if the outer cooling channel 372 is a liquid cooling channel, each of the plurality of support ribs is supported between the inner side of the plate shell 375 or between the plate shell 375 and the inner wall 374 . As shown in Figure 5, the support rib 373a is supported between the plate shell 375 and the inner wall 374, and the support rib 373b is supported between two opposite inner sides of the plate shell 375, depending on the location of the support rib. In some embodiments, the support ribs may also extend along the length direction of the harmonica tube plate 370 and divide the outer cooling channel 372 into a plurality of sub-cooling channels. If the inner cooling channel 371 is a liquid cooling channel, each of the plurality of support ribs is supported between the inner surfaces of the inner wall 374 . As shown in FIG. 8 , the support ribs 373c are supported between two opposite inner surfaces of the inner wall 374 . In some embodiments, the support ribs may also extend along the length direction of the harmonica tube plate 370 and divide the inner cooling channel 371 into a plurality of sub-cooling channels.

In some embodiments, one of the outer cooling channel 372 and the inner cooling channel 371 is a liquid cooling channel, and the other is filled with phase change material. In other embodiments, one of the outer cooling channel 372 and the inner cooling channel 371 is a liquid cooling channel, and the other is filled with elastic material.

In addition to being used as air-cooling cooling channels as described in the above embodiments, the non-liquid cooling channels may also be used only as spaces for absorbing the expansion of the battery cells 200 . In this case, some other substances can be filled in the non-liquid cooling channels to achieve other functions. For example, a phase change material such as an inorganic salt solution or an organic solution may be filled in the non-liquid cooling channel to insulate or dissipate heat from the battery cell 200 . The above-mentioned phase change material only fills a part of the volume of the non-liquid cooling cooling channel to ensure additional spatial deformation of the cooling channel. For another example, the non-liquid cooling cooling channel can also be filled with an elastic material such as sponge to ensure that the non-liquid cooling cooling channel can return to its original shape after deformation.

Filling the non-liquid cooling cooling channels with phase change materials can increase the heat capacity of the entire water-cooling plate assembly 300 and is used to keep the battery cells 200 warm or absorb heat. Filling the non-liquid cooling cooling channel with elastic material can realize the rebound function of the harmonica tube plate 370 after deformation, or increase the support strength.

The present application also provides a water-cooling system 130. Returning to FIG. 2, the water-cooling system 130 includes the above-mentioned plurality of water-cooling plate assemblies 300. The plurality of water-cooling plate assemblies 300 are arranged side by side and spaced apart. For any one of the plurality of water-cooling plate assemblies 300, there are two adjacent water-cooling plate assemblies 300. The first liquid inlet 330 and the second liquid outlet 360 of one of the two adjacent water-cooled plate assemblies 300 are respectively connected with the first liquid outlet 340 and the second liquid inlet of the other water-cooled plate assembly 300. Communicated to achieve connection between two adjacent water-cooling plate assemblies 300 .

The water-cooling system 130 includes multiple water-cooling plate assemblies 300. For example, as shown in FIG. 2, it includes three water-cooling plate assemblies 300. However, in other embodiments, the water cooling system 130 may also include more than three or less than three water cooling plate assemblies 300 . The first liquid inlet 330 of the first row of water-cooling plate assembly 300 (the frontmost water-cooling plate assembly 300 shown in FIG. 2 ) constitutes the total liquid inlet of the entire water cooling system 130 , and its second liquid outlet 360 constitutes the entire water cooling system 130 . The main liquid outlet of system 130. For any water-cooled plate assembly 300 in the middle rows of water-cooled plate assemblies 300, its first liquid inlet 330 is connected to the first liquid outlet 340 of the previous water-cooled plate assembly 300, and its first liquid outlet 340 is connected to the rear water-cooled plate assembly 300. The first liquid inlet 330 of one water-cooling plate assembly 300 is connected, its second liquid inlet is connected to the second liquid outlet 360 of the following water-cooling plate assembly 300, and its second liquid outlet 360 is connected to the previous water-cooling plate assembly 300. connected to the second liquid inlet. The first liquid outlet 340 and the second liquid inlet of the last row of water-cooling plate assembly 300 are blocked. This arrangement enables the water cooling system 130 to form a cooling liquid circulation system. The cooling liquid will enter the first liquid inlet 330 of the water cooling plate assembly 300 of the first row of the water cooling system 130 and then reach the first set of the multi-drainage cold plate assembly 300. in flow space. For each water-cooling plate assembly 300 , the cooling liquid flows from its first collecting space to the second collecting space through the cooling channels of the harmonica tube plate 370 . Finally, the cooling liquid gathers in the second collecting space of the multi-drainage cold plate assembly 300, and finally flows out from the second liquid outlet 360 of the first row of water-cooling plate assembly 300. The outgoing cooling liquid can be cooled by a cooling device outside the battery, and then input again into the first liquid inlet 330 of the first row of water-cooling plate assembly 300 . In addition, as mentioned above, an air supply device can also be provided on one side of the length direction of the water cooling system 130, and the air supply device supplies air to the first air duct openings 313 or the second air duct openings of the plurality of water cooling plate assemblies 300 to achieve control. Air cooling of the battery cells 200 .

In addition, in addition to the water cooling system 130 described in the above embodiments, in other embodiments, the air cooling channels in multiple water cooling plate assemblies 300 can also be connected in series to form an internal circulation channel. An air supply device (for example, a fan) may be disposed in the above-mentioned internal circulation channel, so that the air flow in the air-cooling cooling channel can be internally circulated in the water cooling system 130 .

In some embodiments, the above-mentioned air cooling channel can also be internally connected with the battery 10 in which the water cooling system 130 is installed. When cooling liquid is introduced into the water cooling system 130, the air flow in the air cooling channel can transport the cold energy from the wall of the air channel to the air in the battery 10, thereby enhancing the heat exchange effect. The above arrangement can also reduce the temperature difference at various locations within the battery 10, and can also cool other components that are not in contact with the water cooling system 130, such as high-voltage boxes, copper bars, etc.

The water cooling system 130 of this embodiment can form a cooling liquid circulation system by connecting multiple water cooling plate assemblies 300, thereby facilitating the circulation of cooling liquid therein.

In some embodiments, as shown in FIGS. 2 and 4 , the water cooling system 130 further includes a plurality of connecting pipes 400 , each of the plurality of connecting pipes 400 is used to connect two adjacent water cooling plate assemblies 300 . The first liquid inlet 330 and the first liquid outlet 340 may be used to communicate with the second liquid inlet and the second liquid outlet 360 of two adjacent water-cooling plate assemblies 300 . The first liquid inlet 330 , the second liquid inlet, the first liquid outlet 340 and the second liquid outlet 360 of each water-cooled plate assembly 300 of the water-cooling system 130 all form protrusions extending toward the outside of the water-cooled plate assembly 300 . The flange is inserted into the interior of the corresponding connecting pipe 400 to realize the connection between the first liquid inlet 330, the second liquid inlet, the first liquid outlet 340 or the second liquid outlet 360 and the connecting pipe 400. connect.

The liquid inlets and liquid outlets of the two adjacent water-cooling plate assemblies 300 at the front and rear are connected through the connecting pipe 400, which improves the connection strength between the water-cooling plate assemblies 300 and also ensures that the connection between the adjacent water-cooling plate assemblies 300 is ensured. There is a certain gap for accommodating the battery cells 200 .

According to another aspect of the present application, a battery case 100 is also provided, and the case 100 is used to accommodate the battery cells 200 . As shown in FIG. 2 , in addition to the first part 110 and the second part 120 , the above-mentioned box 100 also includes the above-mentioned water cooling system 130 . The water-cooling plate assembly 300 in the water cooling system 130 is close to the battery cell 200 to cool the battery cell 200 . In some embodiments, the water-cooling plate assembly 300 may be provided as a part of the box 100 and fixed to the interior of the box 100 .

According to one aspect of the present application, a battery 10 is also provided. The battery 10 includes: a battery cell 200 and the above-mentioned box 100 . The box 100 is used to accommodate the battery cells 200 .

According to one aspect of the present application, a battery 10 is also provided. The battery 10 includes: the above-mentioned water cooling system 130 and a plurality of battery cells 200 . At least some of the battery cells 200 among the plurality of battery cells 200 are disposed in the gap between two adjacent water-cooling plate assemblies 300 of the water-cooling system 130 . At least part of the two opposite sides of each battery cell 200 are respectively abutted against the harmonica tube plates 370 of two adjacent water-cooling plate assemblies 300 , so that the water-cooling system 130 can protect both sides of each battery cell 200 . cooling on opposite sides.

In the battery of this embodiment, the two adjacent water-cooling plate assemblies 300 of the water-cooling system 130 can respectively cool the two opposite sides of each battery cell 200, thereby improving the cooling efficiency of the battery cells 200, and at the same time achieving The cooling effect is balanced up and down of the battery cell 200.

According to one aspect of the present application, an electrical device 1 is also provided, and the battery 10 is used to provide kinetic energy for the electrical device 1 . The specific structure of the electrical device 1 can be referred to the description of FIG. 1 and will not be described again here.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features can be equivalently replaced; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present application. The scope shall be covered by the claims and description of this application. In particular, as long as there is no structural conflict, the technical features mentioned in the various embodiments can be combined in any way. The application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

A water-cooled plate assembly includes:

A harmonica tube plate, with an outer cooling channel and an inner cooling channel located inside the outer cooling channel formed inside, and both the outer cooling channel and the inner cooling channel are along the length of the harmonica tube plate. direction extending, wherein one of the outer cooling channel and the inner cooling channel is a liquid cooling channel;

A first current collector is provided at the first end of the harmonica tube plate in the length direction and forms a first current collection space connected to one end port of the liquid cooling channel. The first current collector is also formed with a first current collector. A first liquid inlet and a first liquid outlet for cooling liquid to flow into and out of the first collecting space; and

A second current collector is provided at the second end opposite to the first end in the length direction of the harmonica tube plate and forms a second current collector space connected to the other end port of the liquid cooling channel, The second current collector is also formed with a second liquid inlet and a second liquid outlet for the cooling liquid to flow into and out of the second current collector space.
The water-cooled plate assembly according to claim 1, wherein the outer cooling channel is a liquid cooling channel, and the inner cooling channel is an air cooling channel.
The water-cooled plate assembly of claim 2, wherein the first current collector includes:

first shell; and

A first channel portion is provided inside the first housing, one end of which is connected to one end port of the air-cooling cooling channel, and the other end of which is connected to the outside of the first housing, wherein

The inner surface of the first housing and the outer surface of the first channel portion jointly define the first collecting space, and

The second current collector includes:

second shell; and

The second channel portion is provided inside the second housing, one end of which is connected to the other end port of the air-cooling cooling channel, and the other end of which is connected to the outside of the second housing, wherein

The inner surface of the second housing and the outer surface of the second channel portion jointly define the second collecting space.
The water-cooled plate assembly according to claim 3, wherein:

An end of the first channel portion connected to the outside of the first housing forms a first air duct opening on the first housing to allow cooling airflow to enter and exit the air-cooling cooling channel, and

One end of the second channel portion connected to the outside of the second housing forms a second air duct opening on the second housing to allow cooling air to flow in and out of the air-cooling cooling channel.
The water-cooled plate assembly according to claim 4, wherein:

The first air duct opening is provided on the side of the first shell away from the harmonica tube plate in the length direction of the harmonica tube plate, and

The second air duct opening is provided on the side of the second shell away from the harmonica tube plate in the length direction of the harmonica tube plate.
The water-cooled plate assembly according to any one of claims 3-5, wherein,

A first opening is formed on a side of the first housing facing the harmonica tube plate for engaging the first end of the harmonica tube plate inside the first opening, and

A second opening is formed on a side of the second housing facing the harmonica tube plate for engaging the second end of the harmonica tube plate inside the second opening.
The water-cooled plate assembly according to any one of claims 3-6, wherein,

The first liquid inlet and the first liquid outlet are respectively provided on both sides of the first shell in the thickness direction of the harmonica tube plate; and

The second liquid inlet and the second liquid outlet are respectively provided on both sides of the second shell in the thickness direction of the harmonica tube plate.
The water-cooled plate assembly according to claim 7, wherein:

The projections of the first liquid inlet and the first liquid outlet on a reference plane coincide with each other, wherein the reference plane is a plane parallel to the side surfaces on both sides of the thickness direction of the harmonica tube plate; and

The projections of the second liquid inlet and the second liquid outlet on the reference plane coincide with each other.
The water-cooled plate assembly according to claim 1, wherein the inner cooling channel is a liquid cooling channel, and the outer cooling channel is an air cooling channel.
The water-cooled plate assembly of claim 9, wherein the first current collector includes:

a first housing, the interior of which forms the first collecting space; and

The second current collector includes:

The second housing forms the second collecting space inside.
The water-cooled plate assembly according to any one of claims 1-10, wherein,

The liquid cooling channel is provided with a reinforcing structure.
The water-cooled plate assembly according to claim 11, wherein:

The reinforcing structure is a plurality of supporting ribs.
The water-cooled plate assembly according to any one of claims 1-12, wherein,

One of the outer cooling channel and the inner cooling channel is a liquid cooling channel, and the other is filled with phase change material.
The water-cooled plate assembly according to any one of claims 1-13, wherein,

One of the outer cooling channel and the inner cooling channel is a liquid cooling channel, and the other is filled with elastic material.
A water-cooling system, comprising a plurality of water-cooling plate assemblies according to any one of claims 1 to 14, wherein the plurality of water-cooling plate assemblies are arranged side by side and spaced apart, and for any adjacent one of the plurality of water-cooling plate assemblies, Two water-cooled plate components:

The first liquid inlet and the second liquid outlet of one of the two adjacent water-cooled plate assemblies are respectively connected with the first liquid outlet and the second liquid outlet of the other water-cooled plate assembly. The two liquid inlets are connected to realize the connection between the two adjacent water-cooling plate assemblies.
The water cooling system according to claim 15, further comprising:

A plurality of connecting pipes, each connecting pipe of the plurality of connecting pipes is used to connect the first liquid inlet and the first liquid outlet of two adjacent water-cooling plate assemblies or is used to connect the first liquid inlet and the first liquid outlet of two adjacent water-cooling plate assemblies. a second liquid inlet and a second liquid outlet.
A battery box, the box is used to accommodate battery cells, and includes a water-cooling plate assembly according to any one of claims 1-14, the water-cooling plate assembly is close to the battery cells for cooling The battery cell.
A battery including:

Battery cells;

The battery case according to claim 17, said case being used to accommodate the battery cells.
A battery including:

The water cooling system as claimed in claim 15 or 16; and

A plurality of battery cells, at least some of the battery cells of the plurality of battery cells are arranged in the gap between two adjacent water-cooling plate assemblies of the water-cooling system, wherein

Two opposite sides of each battery cell in at least some of the battery cells are respectively abutted against the harmonica tube plates of the two adjacent water-cooling plate assemblies, so that the water-cooling system controls all aspects of each battery cell. The two opposite sides are cooled.