Battery device, energy storage device, energy storage system, power utilization device and charging network

Abstract

The invention belongs to the technical field of battery production, and provides a battery device, an energy storage device, an energy storage system, a power utilization device and a charging network, and the battery device comprises a battery monomer assembly, an upper cover and a heat exchange substrate. The heat exchange substrate comprises a first plate body and a second plate body, the end face, deviating from the second plate body, of the first plate body is a plane, and the upper cover covers the end face, deviating from the second plate body, of the first plate body. According to the battery device provided by the invention, the first plate body of the heat exchange substrate is used as the bottom plate covering the upper cover, so that the accommodating space for accommodating the battery monomer assembly is defined. The battery monomer assembly is arranged on the planar first plate body, and meanwhile, the reinforcing assembly for supporting and reinforcing is arranged on the end face, deviating from the first plate body, of the second plate body, so that the volume of the battery monomer assembly in the accommodating space is larger, namely, the space utilization rate in the accommodating space is higher.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a battery device, energy storage device, energy storage system, power consumption device, and charging network. Background Technology

[0002] In the field of battery device technology, the battery device includes an upper housing, a battery cell assembly composed of multiple battery cells, a roll forming beam, a water-cooled plate, and a reinforcing beam. The roll forming beam and the reinforcing beam are respectively located on opposite sides of the water-cooled plate. The upper housing covers the roll forming beam. The upper housing, the roll forming beam, and the water-cooled plate together form an accommodating space for housing the battery cell assembly. Both the roll forming beam and the reinforcing beam are used to provide structural support and improve the overall structural strength of the battery device.

[0003] However, the production process of the above-mentioned water-cooled plate structure is complex. Summary of the Invention

[0004] The purpose of this application is to provide a battery device, energy storage device, energy storage system, power supply device and charging network, which aims to solve the technical problem of complex manufacturing process of water-cooled plate of battery device.

[0005] In a first aspect, this application provides a battery device, comprising:

[0006] Battery cell assembly;

[0007] Top cover;

[0008] A heat exchange substrate includes a first plate and a second plate that overlap each other to form a heat exchange cavity. The first plate is a flat plate, and the upper cover is disposed on the end face of the first plate away from the second plate to enclose and form an accommodating space for accommodating the battery cell assembly.

[0009] The beneficial effects of this invention are as follows: The battery device provided by this invention uses a first plate of a heat exchange substrate as a base plate that closes with the top cover to enclose and form an accommodating space for housing the battery cell assembly. On the one hand, the first plate is a flat plate, and the heat exchange cavity can be formed simply by stamping grooves in the second plate, resulting in a simple manufacturing process and low cost. On the other hand, the beamless structure between the top cover and the heat exchange substrate allows for a direct and sealed connection between the top cover and the heat exchange substrate, reducing the sealing interface and increasing the sealing reliability of the battery device.

[0010] In one embodiment, the battery device includes a reinforcing component disposed on the side of the second plate opposite to the top cover and used to support the first plate and the second plate.

[0011] By adopting the above technical solution, the heat exchange substrate is supported and reinforced by strengthening components, thereby improving the reliability of the heat exchange substrate in supporting the battery cell module.

[0012] In one embodiment, the reinforcing component includes two longitudinal beam structures, each longitudinal beam structure extending along a first direction, and the two longitudinal beam structures being spaced apart along a second direction;

[0013] In the third direction, at least a portion of the longitudinal beam structure is located below the battery cell assembly, and the first direction, the second direction, and the third direction are arranged perpendicularly to each other, wherein the third direction is the thickness direction of the heat exchange substrate.

[0014] By adopting the above technical solution, the battery cell assembly is supported by the longitudinal beam structure, thereby improving the overall structural strength of the heat exchange substrate.

[0015] In one embodiment, the second plate is provided with a groove, which, together with the first plate, forms the heat exchange cavity. In the third direction, the projection of the longitudinal beam structure is misaligned with the projection of the heat exchange cavity.

[0016] By adopting the above technical solution, the setting position of the longitudinal beam structure will not compress the heat exchange cavity, so as to meet the requirement of the integrity of the heat exchange cavity space. In addition, the groove is only set on the second plate, while there is no groove on the first plate. The production process of the heat exchange substrate is less and the manufacturing cost is lower.

[0017] In one embodiment, the reinforcing component includes a first fastener, the longitudinal beam structure has a first top surface, the first plate is placed on the first top surface, and the first fastener passes through the first plate and the first top surface in sequence.

[0018] By adopting the above technical solution and using the first fastener to connect the longitudinal beam structure and the first plate, the stability of the connection between the two can be improved.

[0019] In one embodiment, the longitudinal beam structure has a second top surface that is lower than the first top surface, and the second plate is placed on the second top surface. In the third direction, the height difference between the first top surface and the second top surface is used to accommodate the second plate.

[0020] By adopting the above technical solution, the height difference between the second top surface and the first top surface is used to install and accommodate the first and second plates of the heat-dissipating substrate, thereby reducing the overall thickness of each structure after stacking.

[0021] In one embodiment, in the third direction, the thickness of the second plate is less than or equal to the height difference between the first top surface and the second top surface.

[0022] By adopting the above technical solution, the thickness of the second plate body is less than or equal to the height difference between the first top surface and the second top surface, so that the end surface of the second plate body is lower than the height of the first top surface, thereby meeting the requirement that the overall thickness after stacking of each structure is smaller.

[0023] In one embodiment, a first adhesive layer is coated between the second plate body and the second top surface.

[0024] By adopting the above technical solution, the connection stability between the two can be further improved by using the first adhesive layer.

[0025] In one embodiment, the longitudinal beam structure includes a beam main body portion and a beam support portion extending from the beam main body portion along the second direction. The beam main body portion has a first cavity, and the beam support portion has a second cavity, and the first cavity and the second cavity are not connected to each other.

[0026] By adopting the above technical solution, there should be a corresponding separation structure between the first cavity and the second cavity to make them not connected to each other, which is beneficial to improving the overall support strength of the beam main body portion and the beam support portion.

[0027] In one embodiment, in the third direction, the thickness of the beam support portion is less than the thickness of the beam main body portion.

[0028] By adopting the above technical solution, the cross-sectional shapes of the beam main body portion and the beam support portion are similar to or close to a "convex" shape. In this way, after the beam support portion is connected to the strengthening beam, the overall thickness of the strengthening component in the third direction can be reduced to a certain extent.

[0029] In one embodiment, the beam main body portion has a first vertical edge, a second vertical edge spaced from the first vertical edge, and two first horizontal edges respectively connecting the first vertical edge and the second vertical edge. The first vertical edge, the second vertical edge, and the two first horizontal edges enclose the first cavity. The beam support portion has a third vertical edge and two second horizontal edges respectively connecting the third vertical edge and the second vertical edge. The second vertical edge, the third vertical edge, and the two second horizontal edges enclose the second cavity.

[0030] By adopting the above technical solution, the cross-sectional shapes of the beam main body portion and the beam support portion are similar to or close to a "convex" shape. In this way, after the beam support portion is connected to the strengthening beam, the stacking thickness of the beam support portion and the strengthening beam in the third direction can be reduced to a certain extent, which is beneficial to reducing the overall thickness of the strengthening component in the third direction.

[0031] In one embodiment, in the third direction, the projection of the beam support portion coincides with a part of the projection of the battery cell assembly, and the projection of the beam support portion does not coincide with the projection of the heat exchange cavity.

[0032] By adopting the above technical solution, the beam support is extended in the second direction so that the beam support is staggered with the battery cell assembly in space, so as to play a certain load-bearing support role for the battery cell assembly. At the same time, the beam support avoids the heat exchange cavity distribution of the heat exchange substrate, so as not to affect the flow rate of the heat exchange fluid in the heat exchange cavity.

[0033] In one embodiment, the reinforcing component includes a plurality of reinforcing beams connected between the beam support portions of the two longitudinal beam structures, each reinforcing beam extending along the second direction and spaced apart along the first direction.

[0034] By adopting the above technical solution, the longitudinal beams and reinforcing beams are enclosed to form a frame structure, which can effectively support and strengthen the heat exchange substrate.

[0035] In one embodiment, in the third direction, a step is formed between the bottom end face of the beam body and the bottom end face of the beam support, the end of the reinforcing beam is located within the step, and the reinforcing beam is higher than the bottom end face of the beam support than the bottom end face of the beam body.

[0036] By adopting the above technical solution, the bottom surface of the reinforced component is the bottom surface of the main beam to meet the corresponding transfer and installation requirements of the battery device.

[0037] In one embodiment, the reinforcing component includes a second fastener, the first plate has a through hole, the second plate has a countersunk hole, the second fastener passes through the countersunk hole and the reinforcing beam and connects the second plate and the reinforcing beam, and the end face of the second fastener is lower than the end face of the first plate.

[0038] By adopting the above technical solution, the heat exchange substrate and the reinforcing beam can be connected to improve the connection stability between the heat exchange substrate and the reinforcing component. At the same time, the second fastener is housed in the countersunk hole and does not interfere with the battery cell assembly, thereby reducing the probability of insulation failure.

[0039] In one embodiment, the second fastener includes a rivet post and a cap disposed on the rivet post, the cap abutting against the second plate, and a second adhesive layer is provided between the cap and the second plate. The rivet post passes through the countersunk hole to connect with the reinforcing beam.

[0040] By adopting the above technical solution, a second adhesive layer is added between the cap body and the second plate body to improve the sealing of the accommodating space.

[0041] In one embodiment, the reinforcing component includes a plurality of pressure blocks, each of which is disposed at intervals along the first direction on the main body of the beam, and the first plate is provided with clearance notches for the pressure blocks to pass through.

[0042] By adopting the above technical solution, the function of the pressure block is to abut against the external structure during transportation or installation, so as to limit the jumping of the battery device in the height direction (third direction), thereby effectively reducing the probability of vibration and impact conditions.

[0043] In one embodiment, the height of each of the pressure blocks gradually decreases in the first direction.

[0044] By adopting the above technical solution, the battery device can be installed in the energy storage device and other peripheral structures along the first direction.

[0045] In one embodiment, the battery device includes a slider disposed at the bottom of the longitudinal beam structure and extending along the first direction.

[0046] By adopting the above technical solution, the slider is used to reduce the friction between the roller beam and other structures, so as to play a certain protective role for the roller beam.

[0047] In one embodiment, the battery device includes two module beams, each module beam being disposed on the first plate, and each module beam extending along the second direction and spaced apart along the first direction, with the battery cell assembly disposed between the two module beams.

[0048] In one embodiment, the longitudinal beam structure has a plurality of lifting holes, which are spaced apart along the first direction. Two of the lifting holes correspond to the corresponding module beams, and the remaining lifting holes correspond to the respective reinforcing beams.

[0049] By adopting the above technical solution, the lifting holes on the longitudinal beam structure are used to meet the lifting requirements of the battery device. At the same time, the distribution of the lifting holes can meet the corresponding lifting strength requirements.

[0050] By adopting the above technical solution, two module beams are used to limit the position of the battery cell assembly in the first direction, thereby improving the installation stability of the battery cell assembly within the accommodating space.

[0051] Secondly, this application provides an energy storage device, including a plurality of battery devices as described above, the battery devices being used to store or provide electrical energy.

[0052] In one embodiment, the energy storage device includes a bracket with a plurality of flanges formed thereon, the battery device is placed on the bracket, and the flanges abut against a pressure block of the battery device; or...

[0053] In the direction in which the battery device is pushed into the energy storage device, the height of each pressure block of the battery device gradually decreases, and the height of each flange gradually decreases synchronously.

[0054] By adopting the above technical solution, the flanges on the bracket are used to abut against the reinforcing components of the battery device, thereby reducing the vertical movement of the battery device. At the same time, the flanges, which are set in a stepped manner, also improve the smoothness of the bracket installation process.

[0055] Thirdly, this application provides an energy storage system, including a power conversion device and the aforementioned energy storage device, wherein the power conversion device is used to electrically connect the power generation device and the energy storage device.

[0056] Fourthly, this application provides an electrical device, including a battery device, an energy storage device, or an energy storage system as described above, wherein the battery device is used to store or provide electrical energy.

[0057] Fifthly, this application provides a charging network, including a charging pile and the aforementioned energy storage device or energy storage system, wherein the energy storage device is used to provide electrical energy to the charging pile.

[0058] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0059] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0060] Figure 1 This is a schematic diagram of the vehicle structure provided in an embodiment of this application;

[0061] Figure 2 This is a schematic diagram of the structure of the battery device provided in the embodiments of this application;

[0062] Figure 3 An exploded view of the battery device provided in the embodiments of this application;

[0063] Figure 4 This is a schematic diagram of the lower casing of the battery device provided in the embodiments of this application;

[0064] Figure 5 An exploded view of the lower casing of the battery device provided in the embodiments of this application;

[0065] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0066] Figure 7 This is a partial enlarged view of the battery device according to Embodiment 1 of this application;

[0067] Figure 8 This is a partial enlarged view of the battery device according to Embodiment 2 of this application;

[0068] Figure 9 This is a partial enlarged view of the battery device according to Embodiment 3 of this application;

[0069] Figure 10 This is a schematic diagram of the battery device and guide rail provided in the embodiments of this application;

[0070] Figure 11 This is a schematic diagram of the guide rail provided in an embodiment of this application.

[0071] Explanation of reference numerals in the attached figures:

[0072] 1000, Vehicle; 100, Battery unit; 200, Controller; 300, Motor;

[0073] 10. First adhesive layer; 11. Second adhesive layer; 12. Top cover; 13. Sealing element; 14. Sliding strip; 15. Module beam; 111. Heat exchange base plate; 112. Reinforcing assembly; 1111. First plate; 1112. Second plate; 111a. Heat exchange cavity; 1121. Longitudinal beam structure; 1122. Reinforcing beam; 11211. Beam body; 11212. Beam support; 1121a. First cavity; 1121b. Second cavity; 112a. First vertical edge; 112 b. Second vertical edge; 112c. First horizontal edge; 112d. Third vertical edge; 112f. Second horizontal edge; 112g. First folded edge; 112h. Second folded edge; 1121c. Lifting hole; 1123. Pressure block; 1121c. First top surface; 1121d. Second top surface; 1124. First fastener; 1125. Second fastener; 111a. Through hole; 111b. Countersunk hole; 111c. Clearance notch; 11251. Rivet post; 11252. Cap body;

[0074] 20. Battery cell modules;

[0075] 400, bracket; 401, flange;

[0076] X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0077] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application.

[0078] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein 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 specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0079] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0080] In this document, the term "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 throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0081] In the description of the embodiments 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, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0082] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0083] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0084] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0085] A battery apparatus may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via busbars.

[0086] The battery device can be a battery pack, which generally includes a housing and one or more individual battery cells housed in the housing.

[0087] The enclosure of a battery pack needs to house and store individual battery cells, thus requiring a certain level of sealing and structural strength. In related technologies, the base plate of the enclosure consists of a water-cooled plate, roller-pressed beams, and reinforcing beams. Specifically, the roller-pressed beams and reinforcing beams are positioned on opposite sides of the water-cooled plate, and the upper enclosure is placed on the roller-pressed beams. The upper enclosure, roller-pressed beams, and water-cooled plate together form a space for housing the individual battery cells. Both the roller-pressed beams and reinforcing beams provide structural support, enhancing the overall structural strength of the battery pack.

[0088] However, this also leads to the space being encroached upon and compressed by various structures, ultimately affecting the energy density of the battery cell module.

[0089] In view of this, this application provides a battery device that uses a heat exchange substrate as a base plate supporting a battery cell assembly, which, together with a top cover, forms an accommodating space. Specifically, the heat exchange substrate includes a first plate and a second plate that overlap to form a heat exchange cavity. The end face of the first plate facing away from the second plate is planar, and the battery cell assembly is directly placed on the planar first plate. Furthermore, a reinforcing component that provides reinforcement and support is disposed on the end face of the second plate facing away from the first plate, thereby maximizing the utilization of the accommodating space.

[0090] This application provides a battery device 100, which includes one or more battery cell assemblies. The battery device 100 disclosed in this application can be used in electrical devices that use the battery device 100 as a power source or in various energy storage devices and systems that use the battery device 100 as an energy storage element. Electrical devices can be, but are not limited to, mobile phones, portable devices, laptops, electric toys, power tools, electric vehicles, vehicles, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric boat toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0091] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0092] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0093] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0094] Please refer to Figure 3 As shown, Figure 3This is an exploded structural diagram of a battery device 100 provided in some embodiments of this application. The battery device 100 includes a housing 10 and a battery cell assembly 20. A receiving space is formed within the housing 10, and the battery cell assembly 20 is housed within the receiving space. The battery cell assembly 20 is typically formed by arranging multiple battery cells. Alternatively, the battery cell assembly 20 can also be a battery module, which is formed by arranging and fixing multiple battery cells to form an independent module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties. The housing 10 provides receiving space for the battery cell assembly 20, and the housing 10 can adopt various structures.

[0095] A battery cell refers to the smallest unit that makes up the battery device 100. Each battery cell can be a secondary battery cell or a primary battery cell; it can also be a lithium-sulfur battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, but is not limited to these. Battery cells can be cylindrical, flat, cuboid, or other shapes.

[0096] According to some embodiments of this application, refer to Figure 2-7 As shown, this application provides a battery device 100, which includes a top cover 12, a battery cell assembly 20, and a heat exchange substrate 111.

[0097] The heat exchange substrate 111 includes a first plate 1111 and a second plate 1112 that are covered to form a heat exchange cavity. The first plate 1111 is a flat plate, and the upper cover 12 is disposed on the end face of the first plate 1111 away from the second plate 1112 to enclose and form an accommodating space for accommodating the battery cell assembly 20.

[0098] Understandably, the battery device 100 of this application directly uses the heat exchange substrate 111 as the base plate, which, together with the top cover 1212, forms an accommodating space. Here, the heat exchange substrate 111 is used for heat exchange with the battery cell assembly 20. Therefore, a cooling fluid can be introduced into the heat exchange substrate 111 to reduce the operating temperature of the battery cell assembly 20, and a heating fluid can also be introduced into the heat exchange substrate 111 to increase the operating temperature of the battery cell assembly 20.

[0099] Specifically, the first plate 1111 and the second plate 1112 are two components of the heat exchange substrate 111. The first plate 1111 is the part of the heat exchange substrate 111 that contacts the battery cell assembly 20, while the second plate 1112 is the part that faces away from the battery cell assembly 20. For example, the first plate 1111 and the second plate 1112 can be connected by brazing. Also, if the first plate 1111 is a flat plate, then during processing, only the second plate 1112 has a stamped groove. Here, the end face of the first plate 1111 facing away from the second plate 1112 refers to the end face that contacts the battery cell assembly 20. This flat end face allows for better contact with the battery cell assembly 20, thereby improving the utilization rate of the storage space by the battery cell assembly 20.

[0100] The first plate 1111 is a flat plate, which can be understood as the first plate 1111 having no obvious pits or dents and being flat overall. It can also be understood that the first plate 1111 has through holes or notches, which can also be understood as being flat.

[0101] The battery device provided by the present invention uses the first plate 1111 of the heat exchange substrate 111 as the base plate that covers the upper cover 12 to form an accommodating space for housing the battery cell assembly 20. On the one hand, the first plate 1111 is a flat plate, and the heat exchange cavity can be formed simply by stamping grooves on the second plate 1112, which simplifies the production process and reduces costs. On the other hand, by removing the beam structure between the upper cover 12 and the heat exchange substrate 111, the upper cover 12 and the heat exchange substrate 111 are directly and sealed together, reducing the sealing interface and increasing the sealing reliability of the battery device 100.

[0102] Referring to the figure, in other embodiments, a sealing element 13 is also provided between the upper cover 12 and the first plate 1111 to increase the sealing performance of the accommodating space. Specifically, the sealing element 13 is disposed on the end face of the first plate 1111 that faces away from the second plate 1112.

[0103] Please refer to the figure. In one embodiment, the battery device 100 includes a reinforcing component 112, which is disposed on the side of the second plate 1112 opposite to the top cover 112 and is used to support the first plate 1111 and the second plate 1112.

[0104] Understandably, the reinforcing component 112 is used to improve the structural strength of the heat exchange substrate 111. Therefore, the reinforcing component 112 can be a beam structure or a frame structure arranged in a crisscross pattern to meet the structural strength requirements of the heat exchange substrate 111 supporting the battery cell assembly 20.

[0105] Please refer to Figure 5 and Figure 9In one embodiment, the reinforcing component 112 includes two longitudinal beam structures 1121, each longitudinal beam structure 1121 extending along a first direction X, and the two longitudinal beam structures 1121 being spaced apart along a second direction Y.

[0106] In the third direction Z, at least part of the longitudinal beam structure 1121 is located below the battery cell assembly 20, and the first direction X, the second direction Y and the third direction Z are arranged perpendicularly to each other, with the third direction Z being the thickness direction of the heat exchange substrate 111.

[0107] Understandably, the first direction X can be the length direction of the heat exchange substrate 111, and the second direction Y can be the width direction of the heat exchange substrate 111; or, the first direction X can also be the width direction of the heat exchange substrate 111, and the second direction Y can be the length direction of the heat exchange substrate 111. Then, the two longitudinal beam structures 1121 provide corresponding support to the edges of the heat exchange substrate 111.

[0108] Furthermore, the fact that the longitudinal beam structure 1121 extends along the first direction X can be understood as the dimension of the longitudinal beam structure 1121 in the first direction X being greater than the dimension of the longitudinal beam structure 1121 in the second direction Y and the third direction Z.

[0109] The structural forms of longitudinal beams can be roller-pressed beams, I-beams, etc.

[0110] Meanwhile, on the third-party Z direction, at least part of the longitudinal beam structure 1121 extends toward the battery cell assembly 20 to support the battery cell assembly 20. Here, part of the longitudinal beam structure 1121 should directly support the heat exchange substrate 111, and another part should extend to the bottom of the battery cell assembly 20 to support the battery cell assembly 20.

[0111] In this way, the battery cell assembly 20 is supported by the longitudinal beam structure 1121 to improve the overall structural strength of the heat exchange substrate 111.

[0112] Please refer to Figure 9 In one embodiment, the second plate 1112 is provided with a groove, which together with the first plate 1111 forms a heat exchange cavity 111a. In the third direction Z, the projection of the longitudinal beam structure 1121 is misaligned with the projection of the heat exchange cavity 111a.

[0113] Understandably, the groove on the second plate 1112 means that the groove is formed by stamping only on the second plate 1112, while the first plate 1111 is not processed with grooves.

[0114] Furthermore, when the longitudinal beam structure 1121 supports and reinforces the heat exchange substrate 111, the longitudinal beam structure 1121 should avoid the groove located on the second plate 1112, that is, in the third direction Z, the projection of the longitudinal beam structure 1121 does not coincide with the projection of the heat exchange cavity 111a.

[0115] Thus, the placement of the longitudinal beam structure 1121 will not compress the heat exchange cavity 111a, thus meeting the requirement of the spatial integrity of the heat exchange cavity 111a. Furthermore, the groove is only provided on the second plate 1112, while there is no groove on the first plate 1111. This results in fewer production steps for the heat exchange substrate 111 and lower manufacturing costs.

[0116] Please refer to Figure 8 and Figure 9 In one embodiment, the reinforcing component 112 includes a first fastener 1124, the longitudinal beam structure 1121 has a first top surface 1121c, the first plate 1111 is placed on the first top surface 1121c, and the first fastener 1124 passes through the first plate 1111 and the first top surface 1121c in sequence.

[0117] Understandably, the first fastener 1124 can be a rivet nut, screw, etc., which is screwed to the first top surface 1121c and the first plate 1111 to connect the two.

[0118] Here, the first top surface 1121c is the end surface of the longitudinal beam structure 1121 that contacts the heat exchange substrate 111. During normal installation, this end surface faces upward, so it is defined as the top surface.

[0119] Thus, by using the first fastener 1124 to connect the longitudinal beam structure 1121 with the first plate 1111, the stability of the connection between the two can be improved.

[0120] Please refer to Figure 8 and Figure 9 In one embodiment, the longitudinal beam structure 1121 has a second top surface 1121d, which is lower than the first top surface 1121c. The second plate 1112 is placed on the second top surface 1121d. In the third direction Z, the height difference between the first top surface 1121c and the second top surface 1121d is used to accommodate the second plate 1112.

[0121] Understandably, the second top surface 1121d and the first top surface 1121c have the same orientation; that is, during normal installation, this surface faces upwards, and is therefore defined as the top surface. The difference is that the second top surface 1121d is lower in height than the first top surface 1121c, creating a height difference between them.

[0122] During the installation of the heat exchange substrate 111 with the longitudinal beam structure 1121, the first plate 1111 is placed on the first top surface 1121c, and the second plate 1112 is placed on the second top surface 1121d. Therefore, the overall thickness of the two plates after being stacked is only the sum of the thickness of the first plate 1111 and the thickness of the longitudinal beam structure 1121, saving the thickness space of the second plate 1112.

[0123] Thus, by utilizing the height difference between the second top surface 1121d and the first top surface 1121c, the first plate 1111 and the second plate 1112 of the heat dissipation substrate 111 are mounted and accommodated, thereby reducing the overall thickness of each structure after stacking.

[0124] Furthermore, in the third direction Z, the thickness of the second plate 1112 is less than or equal to the height difference between the first top surface 1121c and the second top surface 1121d.

[0125] Understandably, the thickness of the second plate 1112 is less than or equal to the height difference between the first top surface 1121c and the second top surface 1121d, so that the end face of the second plate 1112 is lower than the height of the first top surface 1121c, thereby satisfying the requirement that the overall thickness of each structure is smaller after stacking.

[0126] A first adhesive layer 10 is applied between the second plate 1112 and the second top surface 1121d.

[0127] Understandably, the first adhesive layer 10 is a layer structure with adhesive properties. Since there is no space for installation between the second plate 1112 and the second top surface 1121d, the installation efficiency of the adhesive layer for bonding is higher. Providing the first adhesive layer 10 between the second plate 1112 and the second top surface 1121d can further improve the connection stability.

[0128] Please refer to Figure 8 In one embodiment, the longitudinal beam structure 1121 includes a beam body portion 11211 and a beam support portion 11212 extending from the beam body portion 11211 along the second direction Y. The beam body portion 11211 has a first cavity 1121a, and the beam support portion 11212 has a second cavity 1121b. The first cavity 1121a and the second cavity 1121b are not in communication with each other.

[0129] Understandably, both the main beam portion 11211 and the beam support portion 11212 are hollow structures, which can reduce the overall weight of the longitudinal beam structure 1121 and improve its compressive and bending strength. Here, the cross-sectional shape of the main beam portion 11211 includes, but is not limited to, circular, square, and irregular shapes; similarly, the cross-sectional shape of the beam support portion 11212 includes, but is not limited to, circular, square, and irregular shapes.

[0130] Moreover, the non - communication between the first cavity 1121a and the second cavity 1121b means that the two cavities are separated by a solid structure and not connected. For example, both cavities are formed by independent wall parts and are not connected to each other; or, it is also possible to make the two cavities share a wall part to achieve non - communication.

[0131] Thus, there should be a corresponding separation structure between the first cavity 1121a and the second cavity 1121b to make them non - connected, which is beneficial to improving the overall support strength of the beam main body part 11211 and the beam support part 11212.

[0132] Please refer to Figure 8 and Figure 9 , in one embodiment, in the third direction Z, the thickness of the beam support part 11212 is less than the thickness of the beam main body part 11211.

[0133] It can be understood that in the third direction Z, one end face of the beam support part 11212 can be flush with one end face of the beam main body part 11211. Therefore, overall, the cross - sectional shape of the heat - exchange substrate 111 is similar to or approximately a stepped shape; or, the end faces on both opposite sides of the beam support part 11212 are not flush with the end faces on both sides of the beam main body part 11211. Then, the cross - sectional shape of the heat - exchange substrate 111 is similar to or approximately a "convex" shape.

[0134] In summary, the reinforcing beam or the heat - exchange substrate 111 can be arranged at the step structure between the beam support part 11212 and the beam main body part 11211 to reduce the thickness of the reinforcing beam in the third direction Z, and also to reduce the overall thickness of the heat - exchange substrate 111 after being stacked with the reinforcing beam.

[0135] Thus, the cross - sectional shapes of the beam main body part 11211 and the beam support part 11212 are similar to or close to a "convex" shape or a stepped shape. In this way, after the beam support part 11212 is connected to the reinforcing beam, it can reduce the stacked thickness of the beam support part 11212 and the reinforcing beam in the third direction Z to a certain extent, which is beneficial to reducing the overall thickness of the reinforcing beam in the third direction Z.

[0136] Please refer to Figure 9 , in one embodiment, in the third direction Z, the projection of the beam support part 11212 partially coincides with the projection of the battery cell assembly 20, and the projection of the beam support part 11212 does not coincide with the projection of the heat - exchange cavity 111a.

[0137] Understandably, the beam support 11212 is the part of the longitudinal beam structure 1121 that extends toward the second direction Y. Therefore, the beam support 11212 plays the role of supporting the battery cell assembly 20. Furthermore, the extension length of the beam support 11212 should not coincide with the flow path to avoid the heat exchange cavity 111a on the second plate 1112.

[0138] Please refer to Figure 8 In one embodiment, the main beam portion 11211 has a first vertical edge 112a, a second vertical edge 112b spaced apart from the first vertical edge 112a, and two first horizontal edges 112c that connect the first vertical edge 112a and the second vertical edge 112b respectively. The first vertical edge 112a, the second vertical edge 112b, and the two first horizontal edges 112c enclose a first cavity 1121a. The beam support portion 11212 has a third vertical edge 112d and two second horizontal edges 112f that connect the third vertical edge 112d and the second vertical edge 112b respectively. The second vertical edge 112b, the third vertical edge 112d, and the two second horizontal edges 112f enclose a second cavity 1121b.

[0139] Understandably, each vertical side refers to a wall structure that is erected vertically. For example, the extension direction of each vertical side may be the same as the third direction Z. Each horizontal side refers to a wall structure that is laid horizontally. For example, the extension direction of each horizontal side may be the same as the second direction Y.

[0140] In this embodiment, the first cavity 1121a and the second cavity 1121b share a common vertical edge, and it is the second vertical edge 112b that separates the two cavities into independent and unconnected ones.

[0141] In actual manufacturing, one side of a single sheet of material can be bent three times to form the main beam 11211. Specifically, the first horizontal edge 112c at the top is aligned with the original sheet, and after the first bend, the first vertical edge 112a is formed. After the second bend, the first horizontal edge 112c at the bottom is formed. Finally, after the third bend, the second vertical edge 112b is formed. Simultaneously, the other side of the sheet is bent twice to form the beam support 11212. Specifically, the second horizontal edge 112f at the top is aligned with the original sheet, and after the first bend, the third vertical edge 112a is formed. 12d, after a second bend, forms the second horizontal edge 112f at the bottom. The side of the second vertical edge 112b away from the first horizontal edge 112c at the bottom can be folded. The first folded edge 112g is welded to the first horizontal edge 112c at the top or to the second horizontal edge 112f at the top. The side of the second horizontal edge 112f at the bottom away from the third vertical edge 112d is also folded. The second folded edge 112h is welded to the second vertical edge 112b. Thus, the first cavity 1121a and the second cavity 1121b are completely separated by the second vertical edge 112b.

[0142] Optionally, the structural strength of the main beam 11211 is mainly reflected in each vertical edge; that is, the higher the structural strength of each vertical edge, the higher the structural strength of the main beam 11211. Therefore, its structural strength can be improved by increasing the thickness of each vertical edge and by adding reinforcing ribs to each vertical edge. Similarly, the structural strength of the beam support 11212 is mainly reflected in the third vertical edge 112d. Likewise, its structural strength can also be improved by increasing the thickness of the third vertical edge 112d and by adding reinforcing ribs to the third vertical edge 112d, thereby increasing the structural strength of the beam support 11212.

[0143] Thus, the cross-sectional shape of the main beam 11211 is square, and the cross-sectional shape of the beam support 11212 is square. Furthermore, the two share a common vertical side, resulting in a simpler structural form, lower manufacturing difficulty, and higher structural strength.

[0144] Please refer to Figure 5 In one embodiment, the reinforcing component 112 includes a plurality of reinforcing beams 1122 connected between beam support portions 11212 of two longitudinal beam structures 1121, each reinforcing beam 1122 extending along a second direction Y and spaced apart along a first direction X.

[0145] Understandably, each reinforcing beam 1122 is enclosed with the longitudinal beam structure 1121 to form a frame-like structure, so as to effectively support and reinforce the plane on which the entire heat exchange substrate 111 is located.

[0146] The fact that the reinforcing beam 1122 extends along the second direction Y can be understood as the fact that the size of the reinforcing beam 1122 in the second direction Y is larger than the size of the reinforcing beam 1122 in the first direction X and the third direction Z.

[0147] For example, each longitudinal beam structure 1121 extends along the first direction X and is spaced apart along the second direction Y, and each reinforcing beam 1122 is arranged between two longitudinal beam structures 1121 and is spaced apart at equal intervals along the first direction X.

[0148] Specifically, each reinforcing beam 1122 is connected to the beam support portion 11212 of the longitudinal beam structure 1121. Here, the connection method between the reinforcing beam 1122 and the beam support portion 11212 includes, but is not limited to, bonding, welding and plugging.

[0149] In this way, the longitudinal beams 1121 and the reinforcing beams 1122 are enclosed to form a frame structure, which can effectively support and strengthen the heat exchange substrate 111.

[0150] Please refer to Figure 9 In one embodiment, a step is formed between the bottom end face of the main beam portion 11211 and the bottom end face of the beam support portion 11212 on the third direction Z. The end of the reinforcing beam 1122 is located within the step, and the reinforcing beam 1122 is higher than the bottom end face of the main beam portion 11211 than the bottom end face of the beam support portion 11212.

[0151] Understandably, in the conventional installation orientation of the battery device, the bottom end face of the main beam 11211 is the lowest end face of the reinforcing component 112, which can reduce unnecessary spatial interference. That is, when the battery device is installed or loaded, the bottom end face of the main beam 11211 is connected to the mounting plane.

[0152] Please refer to Figure 7 In one embodiment, the reinforcing component 112 includes a second fastener 1125. The first plate 1111 has a through hole 111a, and the second plate 1112 has a countersunk hole 111b. The second fastener 1125 passes through the countersunk hole 111b and the reinforcing beam 1122 and connects the second plate 1112 and the reinforcing beam 1122. Furthermore, the end face of the second fastener 1125 is lower than the end face of the first plate 1111.

[0153] Understandably, since the first plate 1111 and the second plate 1112 are stacked one on top of the other, the second plate 1112 abuts against the reinforcing beam 1122. Therefore, the through hole 111a and the countersunk hole 111b pass through the first plate 1111 and the second plate 1112 respectively, so as to allow the second fastener 1125 to pass through the countersunk hole 111b and connect with the reinforcing beam 1122.

[0154] Meanwhile, the countersunk hole 111b is provided to allow the second fastener 1125 to be recessed therein. Specifically, a hole can be punched in the second plate 1112, and a recess is formed around the hole, so that the second fastener 1125 can be housed in the recess.

[0155] Here, the second fastener 1125 can be a pop rivet, screw, etc.

[0156] In this way, the heat exchange substrate 111 can be connected to the reinforcing beam 1122 to improve the connection stability between the heat exchange substrate 111 and the reinforcing beam 1122. At the same time, the second fastener 1125 is housed in the countersunk hole 111b and does not interfere with the battery cell assembly 20, thereby reducing the probability of insulation failure.

[0157] Please refer to Figure 7 In one embodiment, the second fastener 1125 includes a rivet post 11251 and a cap 11252 disposed on the rivet post 11251. The cap 11252 abuts against the second plate 1112, and a second adhesive layer 11 is provided between the cap 11252 and the second plate 1112. The rivet post 11251 is sequentially inserted through the through hole 111a and the countersunk hole 111b to connect with the reinforcing beam 1122.

[0158] Understandably, making an opening in the heat exchange substrate 111 will directly affect the sealing performance of the accommodating space. Therefore, when the second fastener 1125 is connected to the reinforcing beam 1122, the sealing performance at the contact point between the cap 11252 and the second plate 1112 needs to be improved. Thus, a second adhesive layer 11 is provided between the two.

[0159] Thus, a second adhesive layer 11 is added between the cap body 11252 and the second plate body 1112 to improve the sealing of the accommodating space.

[0160] Please refer to Figures 4 to 6 In one embodiment, the reinforcing component 112 includes a plurality of pressure blocks 1123, each pressure block 1123 being disposed at intervals along a first direction X on the main beam portion 11211, and the first plate 1111 having a clearance notch 111c for the pressure blocks 1123 to pass through.

[0161] Understandably, the function of the pressure block 1123 is to abut against the external structure during transportation or installation to limit the jumping of the battery device 100 in the height direction (such as the third direction Z), thereby effectively reducing the probability of vibration and shock conditions.

[0162] The pressure block 1123 can be formed by sheet metal stamping or by machining square steel and then connected to the main beam 11211 by welding.

[0163] Optionally, the number of pressure blocks 1123 is ten, with five pressure blocks forming a group. Each pressure block in the same group is equally spaced along the first direction X on the main body of the beam 11211, so as to improve the force balance at various parts of the lower box 11.

[0164] Please refer to Figure 5 In one embodiment, the height of each pressure block 1123 gradually decreases in the first direction X.

[0165] The gradually decreasing height of each pressure block 1123 is beneficial for limiting the battery device 100 in conjunction with the energy storage device structure.

[0166] Please refer to Figure 5 In one embodiment, the battery device includes a slider 14 disposed on the longitudinal beam structure 1121 and extending along a first direction X.

[0167] Understandably, the slider 14 is used to reduce the friction between the longitudinal beam structure 1121 and other structures, so as to provide a certain degree of protection for the longitudinal beam structure 1121.

[0168] The extension of slider 14 along the first direction X can be understood as the size of slider 14 in the first direction X being larger than the size of slider 14 in the second direction Y and the third direction Z.

[0169] Optionally, the slider 14 may be made of non-metallic materials, such as rubber, plastic and resin, and the connection method between the slider 14 and the longitudinal beam structure 1121 may include, but is not limited to, bonding, threaded connection, riveting, etc.

[0170] Please refer to Figure 5 In one embodiment, the battery device includes two module beams 15, each module beam 15 is disposed on a first plate 1111, and each module beam 15 extends along a second direction Y and is spaced apart along a first direction X, with a battery cell assembly 20 disposed between the two module beams 15.

[0171] Understandably, the battery cell assembly 20 is positioned in the first direction X by using two module beams 15 to improve the installation stability of the battery cell assembly 20 within the accommodating space.

[0172] The extension of the modular beam 15 along the second direction Y can be understood as the size of the modular beam 15 in the second direction Y being larger than the size of the modular beam 15 in the first direction X and the third direction Z.

[0173] Please refer to Figure 5In one embodiment, the longitudinal beam structure 1121 is provided with a plurality of lifting holes 1121c, and each lifting hole 1121c is arranged at intervals along the first direction X, wherein two lifting holes 1121c correspond to the corresponding module beam 15, and the remaining lifting holes 1121c correspond to each reinforcing beam 1122.

[0174] Understandably, the lifting holes 1121c on the longitudinal beam structure 1121 are used to meet the lifting requirements of the battery device 100. At the same time, the distribution of the lifting holes 1121c can meet the corresponding lifting strength requirements.

[0175] Please refer to Figures 2 to 9 In one specific embodiment, the battery device 100 includes a top cover 12, a battery cell assembly 20, a heat exchange substrate 111, a reinforcing assembly 112, a slide bar 14, a module beam 15, a pressure block 1123, a first fastener 1124, and a second fastener 1125.

[0176] The heat exchange substrate 111 includes a first plate 1111 and a second plate 1112 that are covered to form a heat exchange cavity. The end face of the first plate 1111 facing away from the second plate 1112 is flat. The upper cover 12 is covered on the end face of the first plate 1111 facing away from the second plate 1112 to enclose and form an accommodating space for housing the battery cell assembly 20. The reinforcing component 112 is disposed on the end face of the second plate 1112 facing away from the first plate 1111.

[0177] The reinforcing component 112 includes two longitudinal beam structures 1121, each extending along a first direction X, and the two longitudinal beam structures 1121 are spaced apart along a second direction Y; in the third direction Z, at least a portion of the longitudinal beam structures 1121 are located below the battery cell assembly 20, and the first direction X, the second direction Y, and the third direction Z are arranged perpendicularly to each other, with the third direction Z being the thickness direction of the heat exchange substrate 111.

[0178] The second plate 1112 has a groove to form a heat exchange cavity 111a with the first plate 1111. In the third direction Z, the projection of the longitudinal beam structure 1121 is misaligned with the projection of the heat exchange cavity 111a.

[0179] The longitudinal beam structure 1121 has a first top surface 1121c, a first plate 1111 is placed on the first top surface, and a first fastener 1124 is sequentially inserted through the first plate 1111 and the first top surface 1121c. The longitudinal beam structure 1121 has a second top surface 1121d, which is lower than the first top surface 1121c. A second plate 1112 is placed on the second top surface 1121d, and a first adhesive layer 10 is coated between the second plate 1112 and the second top surface 1121d.

[0180] The longitudinal beam structure 1121 includes a beam body 11211 and a beam support 11212 extending from the beam body 11211 along a second direction Y. The beam body 11211 has a first cavity 1121a, and the beam support 11212 has a second cavity 1121b. The first cavity 1121a and the second cavity 1121b are not connected to each other. In the third direction Z, the thickness of the beam support 11212 is less than the thickness of the beam body 11211.

[0181] The main beam 11211 has a first vertical side 112a, a second vertical side 112b spaced apart from the first vertical side 112a, and two first horizontal sides 112c that connect the first vertical side 112a and the second vertical side 112b respectively. The first vertical side 112a, the second vertical side 112b, and the two first horizontal sides 112c enclose a first cavity 1121a. The beam support 11212 has a third vertical side 112d and two second horizontal sides 112f that connect the third vertical side 112d and the second vertical side 112b respectively. The second vertical side 112b, the third vertical side 112d, and the two second horizontal sides 112f enclose a second cavity 1121b.

[0182] The reinforcing component 112 includes a plurality of reinforcing beams 1122 connected between beam support portions 11212 of two longitudinal beam structures 1121. Each reinforcing beam 1122 extends along the second direction Y and is spaced apart along the first direction X.

[0183] The first plate 1111 has a through hole 111a, the second plate 1112 has a countersunk hole 111b, the second fastener 1125 passes through the countersunk hole 111b and the reinforcing beam 1122 and connects the second plate 1112 and the reinforcing beam 1122, and the end face of the second fastener 1125 is lower than the end face of the first plate 1111.

[0184] The second fastener 1125 includes a rivet post 11251 and a cap 11252 disposed on the rivet post 11251. The cap 11252 abuts against the second plate 1112, and a second adhesive layer 11 is provided between the cap 11252 and the second plate 1112. The rivet post 11251 is sequentially inserted through the through hole 111a and the countersunk hole 111b to connect with the reinforcing beam 1122.

[0185] The reinforcing component 112 includes multiple pressure blocks 1123, which are spaced apart on the main beam portion 11211 along a first direction X. The first plate 1111 has clearance notches 111c for the pressure blocks 1123 to pass through. The height of each pressure block 1123 gradually decreases along the first direction X.

[0186] The slide bar 14 is provided on the longitudinal beam structure 1121 and extends along the first direction X.

[0187] Each module beam 15 is disposed on the first plate 1111, and each module beam 15 extends along the second direction Y and is spaced apart along the first direction X. The battery cell assembly 20 is disposed between two module beams 15.

[0188] According to some embodiments of this application, this application also provides an energy storage device, which includes the above-described plurality of battery devices 100, the battery devices 100 being used to store or provide electrical energy.

[0189] Specifically, an energy storage device may include one or more battery clusters to increase the voltage and capacity of the energy storage device. A battery cluster may include multiple battery devices 100, which are connected in series via a busbar to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0190] Energy storage devices can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage devices can store electrical energy as needed and output it when appropriate. For example, an energy storage device can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. The energy storage system provided in this application embodiment can be any power system that requires energy storage devices.

[0191] Please refer to Figure 10 and Figure 11 In some embodiments, the energy storage device includes a bracket 400 with a plurality of flanges 401 formed thereon, the battery device 100 is placed on the bracket 400, and the flanges 401 abut against the pressure block 1123 of the battery device 100; or,

[0192] In the direction in which the battery device 100 is pushed into the energy storage device, the height of each pressure block 1123 of the battery device 100 gradually decreases, and the height of each flange 401 gradually decreases synchronously.

[0193] The battery device 100 is pushed into the energy storage device through the opening of the energy storage device. It can be understood that the height of the pressure block 1123 near the opening of the energy storage device is higher than that of the pressure block 1123 far away from the opening of the energy storage device, and the height of the flange 401 near the opening of the energy storage device is higher than that of the flange 401 far away from the opening of the energy storage device. The flange 401 extends along the direction in which the battery device 100 is pushed into the energy storage device.

[0194] In addition, the height of the flange 401 refers to the minimum vertical distance from each flange 401 to the bracket 400.

[0195] Understandably, the flange 401 on the bracket 400 is used to abut against the pressure block 1123 of the battery device 100 to reduce the vertical movement of the battery device 100. The flange 401 near the opening of the energy storage device is higher, which makes it easier to push the battery device 100 into the bracket.

[0196] In some embodiments, the energy storage device is an energy storage container or an energy storage cabinet.

[0197] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters housed within the cabinet.

[0198] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a central control module, a power distribution module, and a fire protection module.

[0199] As an example, the thermal management module may include a liquid cooling unit that supplies coolant to each battery device 100 via piping for regulating the temperature of the individual battery cells.

[0200] As an example, the main control module can serve as the battery management unit for the battery cluster, used to monitor and manage the battery cluster. The main control module can monitor information such as the current, voltage, power, or temperature of the battery cluster. For instance, it can control the charging and discharging current and voltage of the battery cluster. The main control module includes modules such as an auxiliary battery management unit (SBMU) and a fusion switch.

[0201] As an example, the central control module can serve as the battery management unit for an energy storage device, used to monitor and manage the device. The central control module can monitor information such as the energy storage device's current, voltage, power, state of charge, or temperature. For instance, it can control the charging and discharging current and voltage of the energy storage device. As an example, the central control module includes modules such as an Insulation Monitoring Module (IMM), a Master Battery Management Unit (MBMU), an Ethernet (ETH) module, and a fiber optic conversion module.

[0202] As an example, the fire protection module includes a control panel, detectors, alarm devices, etc., used to detect, alarm, or extinguish fires in the energy storage system.

[0203] As an example, a power distribution module can be used to distribute power to modules in an energy storage device that require electricity.

[0204] According to some embodiments of this application, this application also provides an energy storage system, which includes a power conversion device and an energy storage device as described in the above embodiments. The power conversion device is used to electrically connect the power generation device and the energy storage device.

[0205] In some embodiments, the energy storage system may include one or more energy storage devices and a power conversion system (PCS), wherein the power conversion system is used to connect the power generation device and the energy storage device. The power generation device generates electrical energy, which can be stored in the energy storage device through the power conversion system. As examples, the power generation device may specifically be a solar panel, hydroelectric power generation device, thermal power generation device, wind power generation device, etc. The specific type of power generation device is not limited in this application.

[0206] According to some embodiments of this application, refer to Figure 1 As shown, this application also provides an electrical device, which includes the battery device 100 in the above embodiments, the energy storage device in the above embodiments, or the energy storage system in the above embodiments. The battery device 100 is used to store or provide electrical energy.

[0207] The technical solutions described in the embodiments of this application are applicable to various electrical devices that use individual battery cells, such as mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft. For example, spacecraft include airplanes, rockets, space shuttles, and spacecraft.

[0208] The examples of electrical devices in this application are based on the examples of the battery device 100 described above. The examples of electrical devices include all the technical effects of the examples of the battery device 100 described above, and will not be repeated here.

[0209] According to some embodiments of this application, this application also provides a charging network, which includes charging piles and energy storage devices or energy storage systems as described in the above embodiments, wherein the energy storage devices are used to provide electrical energy to the charging piles.

[0210] For example, the charging network includes charging stations and energy storage devices. The charging stations are electrically connected to the energy storage devices, which provide power to the charging stations. The charging stations are also electrically connected to a battery unit 100 in the energy storage devices via cables, and the battery unit 100 can provide its stored electrical energy to the charging stations. The charging stations have one or more connectors for connecting to electrical devices (such as vehicle 1000), thereby enabling them to replenish power.

[0211] Energy storage devices can be located inside the charging pile (e.g., an integrated energy storage and charging unit) or outside the charging pile.

[0212] The above are merely preferred embodiments of this application, and only specifically describe the technical principles of this application. These descriptions are only for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, as well as other specific embodiments of this application that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of this application.

Claims

1. A battery device, characterized in that, include: Battery cell assembly; Top cover; A heat exchange substrate includes a first plate and a second plate that overlap each other to form a heat exchange cavity. The first plate is a flat plate, and the upper cover is disposed on the end face of the first plate away from the second plate to enclose and form an accommodating space for accommodating the battery cell assembly.

2. The battery device as claimed in claim 1, characterized in that: The battery device includes a reinforcing component disposed on the side of the second plate opposite to the top cover and used to support the first plate and the second plate.

3. The battery device as described in claim 2, characterized in that: The reinforcing component includes two longitudinal beam structures, each of which extends along a first direction, and the two longitudinal beam structures are spaced apart along a second direction. In the third direction, at least a portion of the longitudinal beam structure is located below the battery cell assembly, and the first direction, the second direction, and the third direction are arranged perpendicularly to each other, wherein the third direction is the thickness direction of the heat exchange substrate.

4. The battery device as claimed in claim 3, characterized in that: The second plate has a groove, which, together with the first plate, forms the heat exchange cavity. In the third direction, the projection of the longitudinal beam structure is misaligned with the projection of the heat exchange cavity.

5. The battery device as described in claim 3 or 4, characterized in that: The reinforcing component includes a first fastener, the longitudinal beam structure has a first top surface, the first plate is placed on the first top surface, and the first fastener passes through the first plate and the first top surface in sequence.

6. The battery device as claimed in claim 5, characterized in that: The longitudinal beam structure has a second top surface, which is lower than the first top surface. In the third direction, the height difference between the first top surface and the second top surface is used to accommodate the second plate.

7. The battery device as claimed in claim 6, characterized in that: In the third direction, the thickness of the second plate is less than or equal to the height difference between the first top surface and the second top surface.

8. The battery device as claimed in claim 6, characterized in that: A first adhesive layer is coated between the second plate and the second top surface.

9. The battery device according to any one of claims 3 to 8, characterized in that: The longitudinal beam structure includes a beam body and a beam support extending from the beam body along the second direction. The beam body has a first cavity and the beam support has a second cavity. The first cavity and the second cavity are not connected to each other.

10. The battery device as claimed in claim 9, characterized in that: In the third direction, the thickness of the beam support is less than the thickness of the beam body.

11. The battery device as claimed in claim 9, characterized in that: The main body of the beam has a first vertical side, a second vertical side spaced apart from the first vertical side, and two first horizontal sides that connect the first vertical side and the second vertical side respectively. The first vertical side, the second vertical side, and the two first horizontal sides enclose and form the first cavity. The beam support has a third vertical side and two second horizontal sides that connect the third vertical side and the second vertical side respectively. The second vertical side, the third vertical side, and the two second horizontal sides enclose and form the second cavity.

12. The battery device as claimed in claim 9, characterized in that: In the third direction, the projection of the beam support portion coincides with the projection of the battery cell assembly, and the projection of the beam support portion does not coincide with the projection of the heat exchange cavity.

13. The battery device according to any one of claims 9 to 12, characterized in that: The reinforcing assembly includes a plurality of reinforcing beams connected between the beam support portions of the two longitudinal beam structures, each reinforcing beam extending along the second direction and spaced apart along the first direction.

14. The battery device as claimed in claim 13, characterized in that: In the third direction, a step is formed between the bottom end face of the main beam and the bottom end face of the beam support, the end of the reinforcing beam is located within the step, and the reinforcing beam is higher than the bottom end face of the main beam than the bottom end face of the beam support.

15. The battery device as claimed in claim 13 or 14, characterized in that: The reinforcing component includes a second fastener. The first plate has a through hole, and the second plate has a countersunk hole. The second fastener passes through the countersunk hole and the reinforcing beam and connects the second plate and the reinforcing beam. Furthermore, the end face of the second fastener is lower than the end face of the first plate.

16. The battery device as claimed in claim 15, characterized in that: The second fastener includes a rivet post and a cap provided on the rivet post. The cap abuts against the second plate, and a second adhesive layer is provided between the cap and the second plate. The rivet post passes through the countersunk hole to connect with the reinforcing beam.

17. The battery device as claimed in claim 9, characterized in that: The reinforcing component includes multiple pressure blocks, each of which is spaced apart on the main body of the beam along the first direction, and the first plate has clearance notches for the pressure blocks to pass through.

18. The battery device as claimed in claim 17, characterized in that: In the first direction, the height of each of the pressure blocks gradually decreases.

19. The battery device according to any one of claims 3 to 18, characterized in that: The battery device includes a slider, which is located at the bottom of the longitudinal beam structure and extends along the first direction.

20. The battery device according to any one of claims 13 to 19, characterized in that: The battery device includes two module beams, each module beam is disposed on the first plate, and each module beam extends along the second direction and is spaced apart along the first direction. The battery cell assembly is disposed between the two module beams.

21. The battery device as claimed in claim 20, characterized in that: The longitudinal beam structure has multiple lifting holes, which are spaced apart along the first direction. Two of the lifting holes correspond to the corresponding module beams, and the remaining lifting holes correspond to the reinforcing beams.

22. An energy storage device, characterized in that, It includes a plurality of battery devices as described in any one of claims 1 to 21, the battery devices being used to store or provide electrical energy.

23. The energy storage device as described in claim 22, characterized in that: The energy storage device includes a bracket with multiple flanges formed thereon, the battery device is placed on the bracket, and the flanges abut against a pressure block of the battery device; or... In the direction in which the battery device is pushed into the energy storage device, the height of each pressure block of the battery device gradually decreases, and the height of each flange gradually decreases.

24. An energy storage system comprising a power conversion device and an energy storage device as claimed in claim 22, wherein the power conversion device is used to electrically connect a power generation device and the energy storage device.

25. An electrical device comprising a battery device as claimed in any one of claims 1 to 21, an energy storage device as claimed in claim 22, or an energy storage system as claimed in claim 24, wherein the battery device is used to store or provide electrical energy.

26. A charging network comprising a charging pile and an energy storage device as claimed in claim 22 or an energy storage system as claimed in claim 24, the energy storage device being used to provide electrical energy to the charging pile.

Images