Energy storage devices, battery systems and power consumption devices

Abstract

An energy storage device, a battery system and an electrical device belong to the field of battery technology. The energy storage device includes: a mounting frame having a multi-layer bin group arranged in the up-down direction, the bin group including a plurality of mounting bins arranged in the first direction for accommodating a battery device, the battery device including a box body and a battery cell assembly; a plurality of thermal management components, the thermal management components including a plurality of first heat exchange parts and at least one second heat exchange part, the plurality of first heat exchange parts are arranged one by one in a plurality of mounting bins of the same bin group, located outside the box body and used for heat exchange with the battery device, the plurality of first heat exchange parts are connected through the second heat exchange part, at least two first heat exchange parts are connected through the second heat exchange part, so that the number of medium inlets and / or medium outlets of the thermal management component is less than the number of first heat exchange parts. In the above technical scheme, it is beneficial to increase the heat exchange area and improve the heat exchange effect; and the external pipe length is short and the number of joints is small, which is beneficial to reduce the risk and cost of heat exchange medium leakage.

Description

Technical Field

[0001] The present invention relates to the field of battery technology, and in particular to an energy storage device, a battery system and an electrical device. Background Art

[0002] In the related art, the cooling system of the battery device has long and complex cooling pipe lines, which are prone to leakage problems and are costly. Summary of the invention

[0003] The embodiments of the present invention provide an energy storage device, a battery system and an electrical device, which shorten the external pipe length of the thermal management component, reduce the number of joints, and make the pipe simpler, which is beneficial to reducing the risk of heat exchange medium leakage and cost.

[0004] In a first aspect, an embodiment of the present invention provides an energy storage device, comprising: a mounting frame, the mounting frame having a multi-layer bin group arranged in an up-down direction, the bin group comprising a plurality of mounting bins arranged in a first direction, the mounting bins being used to accommodate a battery device, the battery device comprising a box body and a battery cell assembly arranged in the box body, the first direction intersecting with the up-down direction; a plurality of thermal management components, the thermal management components comprising a plurality of first heat exchange parts and at least one second heat exchange part, the plurality of first heat exchange parts being arranged one-to-one in the plurality of mounting bins of the same bin group, the first heat exchange parts being located outside the box body and being used to exchange heat with the battery device, the plurality of first heat exchange parts being connected through the second heat exchange part, wherein at least two of the first heat exchange parts are connected through the second heat exchange part, so that the number of medium inlets and / or medium outlets of the thermal management component is less than the number of the first heat exchange parts.

[0005] In the above technical solution, by arranging the first heat exchange part of the thermal management component and the battery device in the installation compartment respectively, the thermal management component and the battery device can exchange heat by contact and indirectly, which is beneficial to increase the heat exchange area and improve the heat exchange effect; and the multiple first heat exchange parts of the thermal management component are connected into one body with at least one second heat exchange part, and at least two first heat exchange parts are connected, so that the external pipeline of the thermal management component is short in length, the number of joints is small, the pipeline is simpler, which is beneficial to reduce the risk of leakage of the heat exchange medium and the cost.

[0006] In some embodiments, the medium inlets of the multiple thermal management components are arranged along the up-down direction, the medium outlets of the multiple thermal management components are arranged along the up-down direction, the energy storage device also includes a water inlet pipe and a water outlet pipe, the medium inlets of the multiple thermal management components are connected to the water inlet pipe, and the medium outlets of the multiple thermal management components are connected to the water outlet pipe.

[0007] In the above technical solution, multiple thermal management components can be connected in parallel through water inlet pipes and water outlet pipes, so that the heat exchange medium can flow into the multiple thermal management components respectively for heat exchange, so that the temperature control uniformity of the battery devices in multiple compartment groups can be better; and the number of water inlet pipes and water outlet pipes can be less than the number of the first heat exchange parts, so as to reduce the complexity of the inlet and outlet water pipelines.

[0008] In some embodiments, the installation bin has an opening at one end along the second direction, the battery device is suitable for being installed in the installation bin through the opening, the first direction, the second direction and the up and down directions intersect each other, and the water inlet pipe and the water outlet pipe are arranged at the end of the thermal management component away from the opening in the second direction.

[0009] In the above technical solution, the opening of the installation bin can be used as the disassembly and assembly opening of the battery device, and the battery devices in multiple installation bins of the same bin group do not interfere with each other during the disassembly and assembly process. In addition, the water inlet pipe and the water outlet pipe can be located at different ends of the installation bin from the opening, and during the disassembly and assembly of the battery device, the water inlet pipe and the water outlet pipe are not likely to interfere with the battery device, making it easy to disassemble and replace multiple battery devices in the energy storage device separately, thereby improving the convenience of operation.

[0010] In some embodiments, the medium inlet and the medium outlet of the same thermal management component are arranged in the same first heat exchange part, and the flow channels of a plurality of the first heat exchange parts are all connected to the medium inlet and the medium outlet.

[0011] In the above technical solution, the medium inlet and the medium outlet are arranged in the same first heat exchange part, so that the external pipeline of the heat management component can be located near the first heat exchange part, and the pipeline is arranged in a centralized manner, which is easy to assemble and maintain later. In addition, each first heat exchange part is formed with an inflow and outflow path of the heat exchange medium, and the heat exchange medium with a certain temperature difference before and after heat exchange flows through the same first heat exchange part, which is conducive to making the heat exchange on the first heat exchange part more uniform.

[0012] In some embodiments, the first heat exchange part at one end in the first direction is provided with the medium inlet and the medium outlet, the first heat exchange part is provided with a first flow path extending in a tortuous manner, and the first flow paths of multiple first heat exchange parts are connected in series in the first direction and are connected in series between the medium inlet and the medium outlet.

[0013] In the above technical solution, the first flow path extends in a zigzag manner on the first heat exchange part, so that the first flow path can cover a larger range of the first heat exchange part, thereby making the temperature distribution of different areas of the first heat exchange part more uniform, thereby effectively exchanging heat with different areas of the battery device. In addition, multiple first flow paths are connected in series in sequence, making the flow path arrangement on the thermal management component simpler and easier to process and shape the thermal management component.

[0014] In some embodiments, the first heat exchange part at one end in the first direction is provided with the medium inlet and the medium outlet, the first heat exchange part is provided with a first flow path extending in a tortuous manner, and the first flow paths of multiple first heat exchange parts are connected in parallel and in parallel between the medium inlet and the medium outlet.

[0015] In the above technical solution, the heat exchange medium flowing into the medium inlet can flow into multiple first flow paths respectively and exchange heat with multiple battery devices respectively. After the heat exchange is completed, the heat exchange medium flows back to the medium outlet and flows out. The temperature uniformity of the heat exchange medium in the multiple first flow paths is better, which is conducive to improving the uniformity of temperature control of multiple battery devices.

[0016] In some embodiments, the first heat exchange portion at one end in the first direction is provided with a second flow path extending along the second direction, and the second flow path is connected to the medium inlet, and the first heat exchange portion at the other end in the first direction is provided with a third flow path extending along the second direction, and the second heat exchange portion is provided with a fourth flow path extending along the first direction, and the fourth flow path connects the second flow path and the third flow path to form a U-shaped flow path, and the U-shaped flow path forms a U-shaped area, and the first flow paths of multiple first heat exchange portions are located in the U-shaped area, and the first flow paths are connected to the U-shaped flow path.

[0017] In the above technical solution, the heat exchange medium flowing into the medium inlet can flow along the U-shaped flow path around the multiple first heat exchange parts to initially exchange heat with the multiple battery devices and the surrounding air; and then flow into the first flow path of the multiple first heat exchange parts for sufficient heat exchange, which is beneficial for each battery device to exchange heat with the heat exchange medium with relatively high and relatively low temperatures, and utilize the fluidity of the surrounding air to increase the heat exchange area and heat exchange efficiency with the multiple battery devices, thereby improving the uniformity of temperature control of different battery devices.

[0018] In some embodiments, the first heat exchange parts at both ends in the first direction are provided with the medium inlet and the medium outlet, and the first heat exchange part is provided with a fifth flow path and a sixth flow path that extend in a tortuous manner, wherein the fifth flow paths of multiple first heat exchange parts are connected in series and are connected in series between the medium inlet of one of the first heat exchange parts and the medium outlet of another first heat exchange part; the sixth flow paths of multiple first heat exchange parts are connected in series and are connected in series between the medium outlet of one of the first heat exchange parts and the medium inlet of another first heat exchange part.

[0019] In the above technical solution, the flow direction of the heat exchange medium in the flow path formed by multiple fifth flow paths connected in series and the flow path formed by multiple sixth flow paths connected in series are opposite, so that the same battery device can exchange heat with the heat exchange medium in two flow paths with opposite flow directions, so as to reduce the impact on the heat exchange effect as the heat exchange temperature difference decreases, thereby improving the temperature control uniformity of multiple battery devices.

[0020] In some embodiments, in any three of the first heat exchange parts in the first direction, the first heat exchange parts at both ends are respectively provided with the medium outlet, the first heat exchange part or the second heat exchange part in the middle is provided with the medium inlet, and the first heat exchange part is provided with a seventh flow path extending in a tortuous manner, wherein the seventh flow paths of the first heat exchange parts located on the same side of the medium inlet are connected in series and in series between the medium inlet and the medium outlet on the corresponding side; or, the seventh flow paths of the first heat exchange parts located on the same side of the medium inlet are connected in parallel and in parallel between the medium inlet and the medium outlet on the corresponding side.

[0021] In the above technical solution, the flow path formed by the seventh flow paths of the first heat exchange unit located on the same side of the medium inlet in series has a shorter flow path length than the seventh flow paths of all the first heat exchange units in series. The heat exchange medium flowing into the medium inlet can flow to both sides in the first direction, and exchange heat with the battery devices on both sides through the flow path with a shorter length, which can improve the temperature difference and heat exchange effect between the heat exchange medium and the battery device near the medium outlet, so that the temperature uniformity of multiple battery devices is better. The seventh flow paths of the first heat exchange unit located on the same side of the medium inlet are connected in parallel, so that the heat exchange medium flowing into the medium inlet can flow to both sides in the first direction, and exchange heat with the corresponding battery devices through multiple seventh flow paths respectively. The heat exchange medium flows to multiple seventh flow paths faster, and the heat exchange uniformity with multiple battery devices is better.

[0022] In some embodiments, a reserved gap is separated between two adjacent first heat exchange parts, the second heat exchange part extends along the first direction, and the second heat exchange part is connected to the same end of multiple first heat exchange parts in the second direction, and the first direction, the second direction and the up and down directions intersect each other.

[0023] In the above technical solution, one end of the reserved gap in the second direction is blocked by the second heat exchange part and the other end is open. When the thermal management component is installed on the mounting frame, other structures can be moved into the reserved gap through the open end of the reserved gap, which is less likely to cause interference, making it convenient to install thermal management components with a larger area on the mounting frame.

[0024] In some embodiments, the mounting frame includes a supporting longitudinal beam, two adjacent mounting bins of the same bin group are respectively located on both sides of the supporting longitudinal beam in the first direction, the supporting longitudinal beam is located in the reserved gap, and the first heat exchange part is supported and installed on the supporting longitudinal beam.

[0025] In the above technical solution, the supporting longitudinal beam can be moved into the reserved gap through the open end of the reserved gap. In other words, the thermal management component can be moved along the second direction and installed on the mounting bracket. After moving into position, the supporting longitudinal beam is located in the reserved gap, so that it is not easy to interfere with the thermal management component and the mounting bracket. In addition, the supporting longitudinal beam can provide support for the first heat exchange part on both sides in the first direction, so that the two side edges of the first heat exchange part in the first direction can be supported by the two supporting longitudinal beams, thereby improving the stability of the first heat exchange part.

[0026] In some embodiments, a support plate is provided on one side of the support longitudinal beam facing the installation bin, and the first heat exchange part is supported on the support plate and connected to the support plate via fasteners.

[0027] In the above technical solution, the first heat exchange part is supported by the support plate, the support area is larger, and the support stability of the first heat exchange part is better. The first heat exchange part and the support plate are connected by fasteners, so that the first heat exchange part can be limited and locked in more directions, and the stability of the first heat exchange part fixed on the support plate is further improved.

[0028] In some embodiments, a limit plate is provided on the side of the supporting longitudinal beam facing the installation bin, the limit plate is spaced apart from the first heat exchange part in the up and down direction, and the battery device has a limit flange, and the limit flange is located between the limit plate and the first heat exchange part.

[0029] In the above technical solution, by setting a limit plate, it can cooperate with the first heat exchange part to achieve the limitation of the battery device in the up and down directions, so that the battery device is fixed and stable; and the limit plate can cooperate with the support plate to achieve the limitation of the first heat exchange part in the up and down directions, so that the thermal management component can be installed stably.

[0030] In some embodiments, a supporting cross beam is provided on one side of the supporting longitudinal beam along the second direction, the supporting cross beam extends along the first direction, and the second heat exchange portion is supported by the supporting cross beam.

[0031] In the above technical solution, by providing a supporting beam to support the second heat exchange part, the stability of the second heat exchange part can be improved, thereby improving the overall structural strength and structural stability of the thermal management component. The connection between the first heat exchange part and the second heat exchange part is reliable and not prone to deformation and breakage.

[0032] In some embodiments, the box body includes a top plate, a bottom plate and a side panel, the side panel is located between the top plate and the bottom plate and connects the top plate and the bottom plate to define a housing cavity for accommodating the battery cell assembly, wherein the bottom plate is in contact and fit with the first heat exchange part located in the same mounting bin; and / or the top plate is in contact and fit or has a clearance fit with the first heat exchange part located in the mounting bin above.

[0033] In the above technical solution, the battery device can exchange heat with the first heat exchange part through the bottom plate, and no other plate body, air layer or other structures are required between the bottom plate and the first heat exchange part, so that the heat exchange efficiency is higher. The battery device can exchange heat not only with the first heat exchange part in the installation bin where it is located, but also with the first heat exchange part in the installation bin above, which increases the heat exchange area of ​​the battery device and improves the temperature uniformity of different parts of the battery device in the up and down directions.

[0034] In a second aspect, an embodiment of the present invention provides a battery system, comprising: a plurality of battery devices, the plurality of battery devices being arranged along a first direction, the battery devices comprising a box body and a battery cell assembly disposed in the box body; a thermal management component, the thermal management component comprising a plurality of first heat exchange parts and at least one second heat exchange part, the plurality of first heat exchange parts being disposed one by one outside the plurality of battery devices and being used for exchanging heat with the battery devices, the plurality of first heat exchange parts being connected through the second heat exchange parts, wherein at least two of the first heat exchange parts are connected through the second heat exchange parts, so that the number of medium inlets and / or medium outlets of the thermal management component is less than the number of the first heat exchange parts.

[0035] In the above technical solution, by arranging multiple battery devices and a thermal management component located outside the battery device, the thermal management component and the battery device can exchange heat both by contact and indirectly, which is beneficial to increasing the heat exchange area and improving the heat exchange effect; and the multiple first heat exchange parts of the thermal management component are connected to at least one second heat exchange part as a whole, and at least two first heat exchange parts are connected, so that the external pipeline of the thermal management component is short in length, the number of joints is small, and the pipeline is simpler, which is beneficial to reducing the risk of leakage of the heat exchange medium and the cost.

[0036] In a third aspect, an embodiment of the present invention provides an electrical device, comprising the battery system of the embodiment of the second aspect, wherein the battery device is used to provide electrical energy to the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of a vehicle provided by an embodiment of the present invention;

[0038] Figure 2 A schematic diagram of the structure of an energy storage device provided in an embodiment of the present invention;

[0039] Figure 3 A schematic diagram of a portion of the structure of an energy storage device provided in an embodiment of the present invention;

[0040] Figure 4 A schematic diagram of the matching structure of the mounting frame and the thermal management component provided in an embodiment of the present invention;

[0041] Figure 5 for Figure 4 The middle circle shows the enlarged structural schematic diagram of A;

[0042] Figure 6-Figure 8 Schematic diagram of the structure of the thermal management component provided by the first embodiment of the present invention at different angles;

[0043] Fig. 9 A schematic diagram of the structure of a thermal management component provided in a second embodiment of the present invention;

[0044] Fig.10 A schematic diagram of the structure of a thermal management component provided in a third embodiment of the present invention;

[0045] Fig.11 A schematic diagram of the structure of a thermal management component provided in a fourth embodiment of the present invention;

[0046] Fig.12 A schematic diagram of the structure of a thermal management component provided in a fifth embodiment of the present invention;

[0047] Fig.13 for Figure 4 The middle circle shows the enlarged structural schematic diagram of B;

[0048] Fig.14 A schematic diagram of the structure of a battery device provided by an embodiment of the present invention;

[0049] Fig.15 An exploded view of a battery device provided by an embodiment of the present invention;

[0050] Fig.16 A top view of a battery device provided by an embodiment of the present invention;

[0051] Fig.17 for Fig.16 Cross-sectional view along the CC line.

[0052] Reference numerals:

[0053] Energy storage device 100; battery system 200; controller 300; motor 400; vehicle 1000;

[0054] Mounting frame 10; bin group 11; mounting bin 111; supporting longitudinal beam 12; supporting plate 13; limiting plate 14;

[0055] Battery device 20; limiting flange 21; top plate 22; bottom plate 23; side panel 24;

[0056] Thermal management component 30; medium inlet 301; medium outlet 302; reserved gap 303; first heat exchange part 31; first flow path 311; second flow path 312; third flow path 313; fifth flow path 314; sixth flow path 315; seventh flow path 316; second heat exchange part 32; fourth flow path 321;

[0057] Water inlet pipe 40; water outlet pipe 50;

[0058] Container 60; Door 61;

[0059] First direction F1; second direction F2; up and down direction F3. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by technicians in the technical field of the present invention; the terms used in the present invention and the specification of the invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0062] Reference to "embodiments" in the present invention means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0063] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] The term "and / or" in the present invention is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects before and after are in an "or" relationship.

[0065] In the embodiments of the present invention, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present invention shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary and should not constitute any limitation to the present invention.

[0066] The term “plurality” used in the present invention refers to two or more (including two).

[0067] The battery apparatus mentioned in the embodiments of the present application may include one or more battery cell assemblies for providing voltage and capacity. The battery cell assembly may include multiple battery cells, which are connected in series, in parallel or in mixed connection through a busbar component.

[0068] In some embodiments, a battery cell assembly is generally formed by arranging a plurality of battery cells.

[0069] As an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0070] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0071] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0072] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0073] As an example, the box may include a first box and a second box. The first box and the second box are buckled together to form a closed space inside the box to accommodate the battery cell assembly. The closed here means covered or closed, which can be sealed or unsealed. The first box can be a top cover or a bottom plate.

[0074] As an example, the box body may include a top cover, a frame and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, so that a closed space is formed inside the box body to accommodate the battery cell assembly.

[0075] In the embodiment of the present application, the battery cell may be a secondary battery. A secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.

[0076] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel metal hydride battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application. The battery cell can be cylindrical, rectangular or other shapes, which is not limited in the embodiments of the present application.

[0077] The battery cell includes a shell component, an electrode component and an electrolyte (in a solid-state battery, it can be a solid electrolyte layer located between the positive and negative electrodes). The electrode component includes at least one electrode assembly. The electrode assembly and the electrolyte are both contained in the shell component. The electrode assembly includes a positive electrode sheet, a negative electrode sheet and a separator (this structure can be omitted in a solid-state battery). The battery cell mainly relies on the movement of metal ions between the positive electrode sheet and the negative electrode sheet to work.

[0078] The embodiment of the present application provides a battery system, and the battery system may include multiple battery devices. The battery system can be used in electrical devices, and the electrical devices may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and electric tools, etc. The vehicle 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 spacecraft includes an airplane, a rocket, a space shuttle, and a spacecraft, etc.; the electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc.; the electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiment of the present application does not impose any special restrictions on the above-mentioned electrical devices.

[0079] Take the electric device as a vehicle as an example. Figure 1 , Figure 1 The schematic diagram of the vehicle 1000 provided in some embodiments of the present invention is that the vehicle 1000 is provided with a battery system 200, and the battery system 200 can be provided at a position such as the bottom, head, or tail of the vehicle 1000. The battery system 200 can be used for powering the vehicle 1000, for example, the battery system 200 can be used as an operating power source for the vehicle 1000.

[0080] The vehicle 1000 may further include a controller 300 and a motor 400 , wherein the controller 300 is used to control the battery system 200 to supply power to the motor 400 , for example, to meet the power requirements of starting, navigating, and driving the vehicle 1000 .

[0081] In some embodiments of the present application, the battery system 200 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0082] The embodiment of the present application provides an energy storage device, including one or more battery clusters (Battery Cluster) to increase the voltage and capacity of the energy storage device. The battery cluster may include multiple battery devices, and the multiple battery devices are connected in series through a busbar component to increase the voltage of the energy storage device. When the energy storage device includes multiple battery clusters, the multiple battery clusters are connected in parallel to increase the capacity of the energy storage device.

[0083] In some embodiments, the energy storage device may include a cabinet and one or more battery clusters, wherein the battery clusters are housed in the cabinet.

[0084] In some embodiments, the energy storage device may include modules such as a thermal management module, a main control module, a master control module, a power distribution module, and a fire protection module.

[0085] As an example, the thermal management module may include a liquid cooling unit that provides cooling liquid for regulating the temperature of the battery cells to each battery device through a pipeline.

[0086] As an example, the main control module can be used as a battery management unit of a battery cluster 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 example, the charging and discharging current and voltage of the battery cluster can be controlled. The main control module includes a slave battery management unit SBMU (SBMU), a fusion switch and other modules.

[0087] As an example, the master control module can be used as a battery management unit of an energy storage device to monitor and manage the energy storage device. The master control module can monitor information such as the current, voltage, power, state of charge or temperature of the energy storage device. For example, the charging and discharging current, voltage, etc. of the energy storage device can be controlled. As an example, the master control module includes an insulation monitoring module IMM (Insulation Monitoring Module, abbreviated as IMM), a master battery management unit MBMU (Master Battery Management Unit, MBMU), Ethernet ETH (EtherNet, ETH) and a fiber optic conversion module and other modules.

[0088] As an example, a fire protection system includes a control panel, detectors, alarm devices, etc., which are used to detect, alarm or extinguish fire.

[0089] As an example, the power distribution device may be used to distribute power to power consumption modules of the energy storage device.

[0090] The battery device needs to be provided with a temperature regulating structure so that the battery device can operate within an appropriate temperature range. In the related art, the battery device is cooled by a cooling system, which includes a cold plate, a cooling unit and a cold pipe arranged in the box of the battery device. The cooling unit is connected to the cold plate in each battery device through a cold pipe, which results in a long and complex cold pipe line, a large number of joints, and is prone to problems such as pipeline sealing failure and heat exchange medium leakage.

[0091] In view of this, an embodiment of the present application proposes an energy storage device, including a mounting frame and a plurality of thermal management components. The mounting frame has a multi-layer bin group arranged in the up-down direction, the bin group includes a plurality of mounting bins arranged in the first direction, the mounting bins are used to accommodate a battery device, the battery device includes a box body and a battery cell assembly arranged in the box body, and the first direction intersects with the up-down direction. The thermal management component includes a plurality of first heat exchange parts and at least one second heat exchange part, the plurality of first heat exchange parts are arranged one by one in a plurality of mounting bins of the same bin group, the first heat exchange part is located outside the box body and is used to exchange heat with the battery device, and the plurality of first heat exchange parts are connected through the second heat exchange part. Among them, at least two first heat exchange parts are connected through the second heat exchange part, so that the number of at least one of the medium inlet and the medium outlet of the thermal management component is less than the number of the first heat exchange parts.

[0092] In the energy storage device of the above-mentioned structure, by arranging the first heat exchange part of the thermal management component and the battery device in the installation compartment respectively, the thermal management component and the battery device can exchange heat both by contact and indirectly, which is beneficial to increase the heat exchange area and improve the heat exchange effect; and the multiple first heat exchange parts of the thermal management component are connected to at least one second heat exchange part as a whole, and at least two first heat exchange parts are connected, so that the external pipeline of the thermal management component is short in length, the number of joints is small, and the pipeline is simpler, which is beneficial to reduce the risk of leakage of the heat exchange medium and the cost.

[0093] The technical solution described in the embodiments of the present application is applicable to an energy storage device using a battery device.

[0094] The energy storage device can be an energy storage container or an energy storage cabinet. The energy storage device can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems or temporary power supply systems. The energy storage device can store electrical energy as needed and output electrical energy at the appropriate time.

[0095] For the convenience of description, the following embodiments are described by taking the energy storage device as an energy storage container as an example.

[0096] Please refer to Figure 2-Figure 4 , Figure 2 A schematic diagram of the structure of an energy storage device 100 provided in an embodiment of the present invention; Figure 3 A schematic diagram of a portion of the structure of an energy storage device 100 provided in an embodiment of the present invention; Figure 4 A schematic diagram of the matching structure of the mounting frame 10 and the thermal management component 30 provided in an embodiment of the present invention. The energy storage device 100 includes a container 60, a mounting frame 10 and a battery device 20. The mounting frame 10 is located in the container 60, and the mounting frame 10 has a plurality of mounting compartments 111, which can be used to install the battery device 20 to achieve the integration of the battery device 20 in the container 60. The battery device 20 can store electrical energy when the power consumption is low, and provide electrical energy to relevant users or power-consuming devices when the power consumption is high.

[0097] Hereinafter, an energy storage device 100 according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0098] Please refer to Figure 4-Figure 8 , Figure 5 for Figure 4 The middle circle shows the enlarged structural schematic diagram of A; Figure 6-Figure 8 The schematic diagrams of the structure of the heat management component 30 provided in the first embodiment of the present invention at different angles are as follows. The energy storage device 100 comprises: a mounting frame 10 and a plurality of heat management components 30 .

[0099] Specifically, the mounting frame 10 has a multi-layer bin group 11 arranged along the up-down direction F3, the bin group 11 includes a plurality of mounting bins 111 arranged along the first direction F1, the mounting bins 111 are used to accommodate the battery device 20, the battery device 20 includes a box body and a battery cell assembly arranged in the box body, and the first direction F1 intersects with the up-down direction F3. The thermal management component 30 includes a plurality of first heat exchange parts 31 and at least one second heat exchange part 32, the plurality of first heat exchange parts 31 are arranged one by one in the plurality of mounting bins 111 of the same bin group 11, the first heat exchange parts 31 are located outside the box body and are used to exchange heat with the battery device 20, and the plurality of first heat exchange parts 31 are connected through the second heat exchange parts 32. Among them, at least two first heat exchange parts 31 are connected through the second heat exchange parts 32, so that the number of at least one of the medium inlet 301 and the medium outlet 302 of the thermal management component 30 is less than the number of the first heat exchange parts 31.

[0100] The mounting frame 10 is a structure for supporting and mounting the thermal management component 30 and the battery device 20, and can be an integrated structure or a split structure. Figure 4 As shown, the mounting rack 10 may include a plurality of racks, each of which may be provided with a plurality of mounting chambers 111 arranged along the up-down direction F3, and the plurality of racks may be arranged along the first direction F1 to form the mounting rack 10. Thus, for different energy storage devices 100, the number of racks included in the mounting rack 10 may be adjusted to meet the number and arrangement of the battery devices 20 that can be arranged, and during the assembly process, the plurality of racks may be moved into the container 60 of the energy storage device 100 respectively to make the movement of the mounting rack 10 easier.

[0101] The mounting frame 10 can be made of metal or non-metallic material with relatively high hardness, etc., as long as it can meet the structural strength requirements.

[0102] The installation chamber 111 refers to a space for accommodating the battery device 20 , that is, the battery device 20 can be placed in the installation chamber 111 to achieve installation.

[0103] The up-down direction F3 may be a vertical direction or a non-horizontal direction that is at a certain angle to the vertical direction; the first direction F1 may be a horizontal direction or a non-vertical direction that is at a certain angle to the horizontal direction. The first direction F1 intersects with the up-down direction F3 and may be perpendicular to each other or may be at a certain angle to the up-down direction F3. The following description takes the up-down direction F3 as a vertical direction and the first direction F1 as a horizontal direction as an example. According to the following description, it is understandable to those skilled in the art that the up-down direction F3 and the first direction F1 are other directions.

[0104] The thermal management component 30 can be a plate, a tube or other structure, as long as it can perform heat exchange; the thermal management component 30 can be a hard structure or a structure with certain flexibility. For example, the thermal management component 30 can include a flexible part, and the upper and lower sides of the flexible part are sealed by aluminum plastic film.

[0105] The thermal management component 30 exchanges heat with the battery device 20, for example, transferring the heat of the battery device 20 to the thermal management component 30 to achieve cooling of the battery device 20, or transferring the heat of the thermal management component 30 to the battery device 20 to achieve heating of the battery device 20, thereby enabling the battery device 20 to operate within an appropriate temperature range, thereby improving the operating stability and service life of the battery device 20.

[0106] The thermal management component 30 includes multiple first heat exchange parts 31 and at least one second heat exchange part 32, and the multiple first heat exchange parts 31 are connected through the second heat exchange part 32. In an embodiment where there is one second heat exchange part 32, multiple first heat exchange parts 31 are respectively connected to the second heat exchange part 32 so that the thermal management component 30 forms a whole. In an embodiment where there are multiple second heat exchange parts 32, each second heat exchange part 32 can be connected to two, three or more first heat exchange parts 31, and it is only necessary to connect all the first heat exchange parts 31 and all the second heat exchange parts 32 as a whole.

[0107] The multiple first heat exchange parts 31 are arranged in the multiple installation compartments 111 of the same compartment group 11, that is, the multiple first heat exchange parts 31 of the thermal management component 30 are arranged along the first direction F1, and the multiple first heat exchange parts 31 are respectively arranged in different installation compartments 111 of the compartment group 11. Therefore, the first heat exchange parts 31 and the battery device 20 are both arranged in the installation compartment 111 and the thermal management component 30 is located outside the box of the battery device 20, and the thermal management component 30 can exchange heat with the battery device 20 and the air around the battery device 20.

[0108] Therefore, in the present application, the heat exchange mode between the thermal management component 30 and the battery device 20 can be contact heat exchange and indirect heat exchange. Specifically, the first heat exchange part 31 can be in contact with the battery device 20 to achieve direct contact heat exchange with the battery device 20; the thermal management component 30 is located outside the box of the battery device 20, so that the thermal management component 30 can exchange heat with the air around the battery device 20, and then the surrounding air exchanges heat with the battery device 20 to achieve indirect heat exchange between the thermal management component 30 and the battery device 20. In addition, the surrounding air can flow to contact the entire outer surface of the battery device 20, that is, heat is exchanged through the entire outer surface of the battery device 20, rather than being limited to the surface in direct contact with the thermal management component 30, so that the heat exchange area is larger, and the heat exchange on the surfaces on different sides of the battery device 20 is more uniform, which is conducive to improving the temperature control effect of the battery device 20.

[0109] In addition, at least two first heat exchange parts 31 are connected through the second heat exchange part 32, that is, the first heat exchange part 31 has a flow channel, and the second heat exchange part 32 has a flow channel, and the flow channel of the second heat exchange part 32 can connect the flow channels of at least two first heat exchange parts 31, so that the flow channels of at least two second heat exchange parts 32 are connected in series, in parallel, or in mixed connection (that is, connected in series and in parallel at the same time). As a result, the heat exchange medium flowing in through the medium inlet 301 can flow into the multiple first heat exchange parts 31 connected through the second heat exchange part 32, exchange heat with the battery device 20, and then flow out through the medium outlet 302, without the need to set the medium inlet 301 and the medium outlet 302 on each first heat exchange part 31. The number of medium inlets 301 set on the thermal management component 30 is less than the number of first heat exchange parts 31, or the number of medium outlets 302 can be less than the number of first heat exchange parts 31, or the number of medium inlets 301 and medium outlets 302 are both less than the number of first heat exchange parts 31.

[0110] For example Figure 6-Figure 8 As shown, the thermal management component 30 includes five first heat exchange parts 31 and one second heat exchange part 32. The five first heat exchange parts 31 are connected through the second heat exchange part 32 to realize the series connection of the flow channels of the five first heat exchange parts 31, and one of the first heat exchange parts 31 is provided with a medium inlet 301 and a medium outlet 302. The heat exchange medium flowing in through the medium inlet 301 flows through the five first heat exchange parts 31 in sequence and then flows out through the medium outlet 302. Therefore, the heat exchange medium flows through the five first heat exchange parts 31 and one second heat exchange part 32 for heat exchange, and only one medium inlet 301 and one medium outlet 302 need to be provided, and the number of medium inlets 301 and medium outlets 302 is small.

[0111] By reducing the number of at least one of the medium inlet 301 and the medium outlet 302, the external piping of the thermal management component 30 can be reduced, for example, the number of cold pipes between the thermal management component 30 and the cooling unit is reduced, and there is no need to connect each first heat exchange part 31 to the external piping, thereby greatly reducing the length of the pipeline and the number of joints, and effectively reducing the complexity. On the one hand, the efficiency of assembly is improved, and on the other hand, the pipeline seal is not easily failed, thereby reducing the risk of leakage of the heat exchange medium.

[0112] Furthermore, since the thermal management component 30 is located outside the battery device 20, the battery device 20 and the thermal management component 30 can be independently disassembled and replaced. When the battery device 20 is damaged or its service life is exhausted, only the damaged or exhausted battery device 20 can be replaced without disassembling and replacing the thermal management component 30, which is beneficial to reducing the use and maintenance costs of the energy storage device 100.

[0113] According to the energy storage device 100 of the embodiment of the present invention, by arranging the first heat exchange part 31 of the thermal management component 30 and the battery device 20 in the installation compartment 111 respectively, the thermal management component 30 and the battery device 20 can both exchange heat in contact and indirectly, which is beneficial to increase the heat exchange area and improve the heat exchange effect; and the multiple first heat exchange parts 31 of the thermal management component 30 are connected to at least one second heat exchange part 32 as a whole, and at least two first heat exchange parts 31 are connected, so that the external pipeline of the thermal management component 30 is short in length, the number of joints is small, and the pipeline is simpler, which is beneficial to reduce the risk of leakage of the heat exchange medium and the cost.

[0114] According to some embodiments of the present invention, Figure 4 and Figure 5 As shown, the medium inlets 301 of the multiple thermal management components 30 are arranged along the up-down direction F3, and the medium outlets 302 of the multiple thermal management components 30 are arranged along the up-down direction F3. The energy storage device 100 also includes a water inlet pipe 40 and a water outlet pipe 50, the medium inlets 301 of the multiple thermal management components 30 are connected to the water inlet pipe 40, and the medium outlets 302 of the multiple thermal management components 30 are connected to the water outlet pipe 50.

[0115] Among them, in the embodiment where the thermal management component 30 is provided with one medium inlet 301, the medium inlets 301 of multiple thermal management components 30 are arranged in a row along the up-down direction F3; in the embodiment where the thermal management component 30 is provided with multiple medium inlets 301, the medium inlets 301 of multiple thermal management components 30 can be arranged in two or more rows. Taking the thermal management component 30 as an example where two medium inlets 301 are provided, the two medium inlets 301 can be respectively provided in two first heat exchange parts 31, so that all the medium inlets 301 are arranged in two rows, and each row includes multiple medium inlets 301 arranged along the up-down direction F3. According to the above description, it is understandable that the medium outlets 302 of multiple thermal management components 30 are arranged along the up-down direction F3, which will not be repeated here.

[0116] The number of water inlet pipes 40 may be the same as the number of rows of medium inlets 301, or multiple rows of medium inlets 301 may be connected to the same water inlet pipe 40; the number of water outlet pipes 50 may be the same as the number of rows of medium outlets 302, or multiple rows of medium outlets 302 may be connected to the same water outlet pipe 50. The heat exchange medium flowing through the water inlet pipes 40, the water outlet pipes 50 and the thermal management component 30 may be, but is not limited to, water, and may also be, for example, salt water, ethylene glycol, propylene glycol, etc.

[0117] The water inlet pipe 40 and the water outlet pipe 50 may extend along the up-down direction F3, or may include a main pipe extending along the up-down direction F3 and a branch pipe connecting the main pipe and the thermal management component 30. Figure 4 and Figure 5As shown, the thermal management component 30 has a row of medium inlets 301 and a row of medium outlets 302, and the medium inlets 301 and the medium outlets 302 are arranged at intervals along the first direction F1. The water inlet pipe 40 and the water outlet pipe 50 both include a main pipe and a plurality of branch pipes. The main pipe extends along the up-down direction F3, and the branch pipes generally extend along the first direction F1, so that the main pipe of the water inlet pipe 40 and the main pipe of the water outlet pipe 50 are arranged closely, and the main pipe of the water inlet pipe 40 is connected to the plurality of medium inlets 301 through the plurality of branch pipes, and the main pipe of the water outlet pipe 50 is connected to the plurality of medium outlets 302 through the plurality of branch pipes.

[0118] In the above embodiment, multiple thermal management components 30 can be connected in parallel through the water inlet pipe 40 and the water outlet pipe 50, so that the heat exchange medium can flow into the multiple thermal management components 30 for heat exchange respectively, so that the temperature control uniformity of the battery devices 20 in the multiple compartment groups 11 is better; and the number of water inlet pipes 40 and water outlet pipes 50 can be less than the number of the first heat exchange parts 31 to reduce the complexity of the inlet and outlet water pipelines.

[0119] In some embodiments, Figure 3 and Figure 4 As shown, the installation chamber 111 has an opening at one end along the second direction F2, and the battery device 20 can be installed in the installation chamber 111 through the opening. The first direction F1, the second direction F2 and the up-down direction F3 intersect each other. The water inlet pipe 40 and the water outlet pipe 50 are arranged at the end of the thermal management component 30 away from the opening in the second direction F2.

[0120] For example, the first direction F1 is the length direction of the energy storage device 100 , the second direction F2 is the width direction of the energy storage device 100 , and the up-down direction F3 is the height direction of the energy storage device 100 .

[0121] The opening of the installation chamber 111 can be used as a disassembly and assembly port for the battery device 20, that is, during the disassembly and assembly process, the battery device 20 is moved into the installation chamber 111 or moved out of the installation chamber 111 through the opening, and the battery devices 20 in multiple installation chambers 111 of the same chamber group 11 do not interfere with each other during the disassembly and assembly process. The water inlet pipe 40 and the water outlet pipe 50 are arranged at the end of the thermal management component 30 away from the opening, so that the water inlet pipe 40 and the water outlet pipe 50 can be located at different ends of the installation chamber 111 from the opening. During the disassembly and assembly of the battery device 20, the water inlet pipe 40 and the water outlet pipe 50 are not easy to interfere with the battery device 20. As a result, the multiple battery devices 20 in the energy storage device 100 are easy to be disassembled and replaced separately, which improves the convenience of operation.

[0122] In some specific embodiments, the energy storage device 100 includes a container 60, and the container 60 may be provided with a door 61 on one side along the second direction F2, and the door 61 is located on a side close to the opening of the installation compartment 111, so that the battery device 20 can be repaired and replaced more conveniently later; in other embodiments, such as Figure 2and Figure 3 As shown, the container 60 can be provided with door bodies 61 on both sides along the second direction F2, and the two door bodies 61 are respectively located on both sides of the installation bin 111, wherein the door body 61 close to the opening of the installation bin 111 can facilitate the later maintenance and replacement of the battery device 20, and the door body 61 close to the water inlet pipe 40 and the water outlet pipe 50 can facilitate the assembly of the water inlet pipe 40 and the water outlet pipe 50 with the thermal management component 30.

[0123] The flow channel structure of the thermal management component 30 according to some embodiments of the present invention is described below with reference to the accompanying drawings.

[0124] According to some embodiments of the present invention, Figure 6-Figure 9 As shown, Figure 8 and Fig. 9 The structure diagram of the heat management component 30 of different embodiments of the present application is shown in FIG. The medium inlet 301 and the medium outlet 302 of the same heat management component 30 are arranged in the same first heat exchange part 31 , and the flow channels of multiple first heat exchange parts 31 are connected to the medium inlet 301 and the medium outlet 302 .

[0125] The number of medium inlets 301 and medium outlets 302 of the same thermal management component 30 may be one or more. The flow passages of the multiple first heat exchange parts 31 may be connected in parallel, in series or in a mixed manner; any two first heat exchange parts 31 may be connected to the same medium inlet 301 or to different medium inlets 301, and may be connected to the same medium outlet 302 or to different medium outlets 302.

[0126] By arranging the medium inlet 301 and the medium outlet 302 in the same first heat exchange part 31, the external pipeline of the thermal management component 30 can be located near the first heat exchange part 31, and the pipeline layout is concentrated, which is easy to assemble and maintain later. In addition, the heat exchange medium can flow into the corresponding first heat exchange part 31 from the medium inlet 301 and then flow into other first heat exchange parts 31. After heat exchange with the battery device 20, the heat exchange medium can return to the first heat exchange part 31 where the medium inlet 301 is located and flow out through the corresponding medium outlet 302. As a result, each first heat exchange part 31 is formed with an inflow and outflow path for the heat exchange medium, and the heat exchange medium with a certain temperature difference before and after the heat exchange flows through the same first heat exchange part 31, which is conducive to making the heat exchange on the first heat exchange part 31 more uniform.

[0127] In some embodiments, Figure 8 As shown, the first heat exchange part 31 at one end in the first direction F1 is provided with a medium inlet 301 and a medium outlet 302, and the first heat exchange part 31 is provided with a first flow path 311 extending in a tortuous manner. The first flow paths 311 of multiple first heat exchange parts 31 are connected in series in the first direction F1 and are connected in series between the medium inlet 301 and the medium outlet 302.

[0128] The first flow path 311 extends in a zigzag manner, which means that at least a portion of the first flow path 311 extends along a non-straight path. For example, the first flow path 311 may extend along any curve; for example, Figure 8 As shown, the first flow path 311 may include a plurality of first straight line segments and at least one connecting segment, wherein the plurality of first straight line segments are arranged at intervals along the second direction F2, and the plurality of first straight line segments are sequentially connected and communicated through the connecting segment, and the connecting segment may be a second straight line segment or an arc segment extending along an arc line.

[0129] The first flow path 311 extends in a zigzag manner on the first heat exchange portion 31, so that the first flow path 311 can cover a larger range of the first heat exchange portion 31, thereby making the temperature distribution of different regions of the first heat exchange portion 31 more uniform, thereby effectively exchanging heat with different regions of the battery device 20. In addition, multiple first flow paths 311 are connected in series in sequence, so that the flow path arrangement on the thermal management component 30 is simpler, and the thermal management component 30 is easier to process and shape.

[0130] In other embodiments, Fig. 9 As shown, the first heat exchange part 31 at one end in the first direction F1 is provided with a medium inlet 301 and a medium outlet 302, and the first heat exchange part 31 is provided with a first flow path 311 extending in a tortuous manner. The first flow paths 311 of multiple first heat exchange parts 31 are connected in parallel and in parallel between the medium inlet 301 and the medium outlet 302.

[0131] The heat exchange medium flowing into the medium inlet 301 can flow into the multiple first flow paths 311 respectively and exchange heat with the multiple battery devices 20 respectively. After the heat exchange is completed, the heat exchange medium flows back to the medium outlet 302 and flows out. The temperature uniformity of the heat exchange medium in the multiple first flow paths 311 is better, which is conducive to improving the uniformity of temperature control of the multiple battery devices 20.

[0132] In some embodiments of the present invention, please refer to Figure 8 and Fig. 9 As shown, the first heat exchange part 31 at one end in the first direction F1 is provided with a second flow path 312 extending along the second direction F2, and the second flow path 312 is connected to the medium inlet 301; the first heat exchange part 31 at the other end in the first direction F1 is provided with a third flow path 313 extending along the second direction F2; the second heat exchange part 32 is provided with a fourth flow path 321 extending along the first direction F1, and the fourth flow path 321 connects the second flow path 312 and the third flow path 313 to form a U-shaped flow path, and the U-shaped flow path forms a U-shaped area. The first flow paths 311 of the plurality of first heat exchange parts 31 are located in the U-shaped area, and the first flow paths 311 are connected to the U-shaped flow paths.

[0133] The first flow paths 311 of the plurality of first heat exchange parts 31 may be sequentially connected in series and connected in series with the U-shaped flow path; or the first flow paths 311 of the plurality of first heat exchange parts 31 may be connected in parallel and connected with the U-shaped flow path respectively.

[0134] The first flow paths 311 of the multiple first heat exchange parts 31 are located in the U-shaped area, so that the heat exchange medium flowing into the medium inlet 301 can flow along the U-shaped flow path outside the multiple first heat exchange parts 31 to initially exchange heat with the multiple battery devices 20 and the surrounding air; and then flow into the first flow paths 311 of the multiple first heat exchange parts 31 for sufficient heat exchange, which is beneficial for each battery device 20 to exchange heat with both relatively high and relatively low temperature heat exchange media, and use the fluidity of the surrounding air to increase the heat exchange area and heat exchange efficiency with the multiple battery devices 20, thereby improving the uniformity of temperature control of different battery devices 20.

[0135] According to some embodiments of the present invention, Fig.10 As shown, the first heat exchange parts 31 at both ends in the first direction F1 are provided with a medium inlet 301 and a medium outlet 302, and the first heat exchange parts 31 are provided with a fifth flow path 314 and a sixth flow path 315 that extend in a zigzag manner. The fifth flow paths 314 of the plurality of first heat exchange parts 31 are connected in series and are connected in series between the medium inlet 301 of one of the first heat exchange parts 31 and the medium outlet 302 of another first heat exchange part 31; the sixth flow paths 315 of the plurality of first heat exchange parts 31 are connected in series and are connected in series between the medium outlet 302 of one of the first heat exchange parts 31 and the medium inlet 301 of another first heat exchange part 31.

[0136] As the heat exchange medium flowing into the medium inlet 301 exchanges heat with the battery device 20, the temperature difference between the heat exchange medium and the battery device 20 decreases. In the flow path formed by the plurality of fifth flow paths 314 connected in series and the flow path formed by the plurality of sixth flow paths 315 connected in series, the flow directions of the heat exchange medium are opposite, so that the same battery device 20 can exchange heat with the heat exchange medium in two flow paths with opposite flow directions, so as to reduce the influence on the heat exchange effect as the heat exchange temperature difference decreases, thereby improving the temperature control uniformity of the plurality of battery devices 20.

[0137] According to some embodiments of the present invention, Fig.11 and Fig.12 As shown, Fig.11 A schematic diagram of the structure of a thermal management component 30 provided in a fourth embodiment of the present invention; Fig.12 A schematic diagram of the structure of the heat management component 30 provided in the fifth embodiment of the present invention. In any three first heat exchange parts 31 in the first direction F1, the first heat exchange parts 31 at both ends are respectively provided with a medium outlet 302, the first heat exchange part 31 or the second heat exchange part 32 in the middle is provided with a medium inlet 301, and the first heat exchange part 31 is provided with a seventh flow path 316 extending in a zigzag manner.

[0138] Any three first heat exchange parts 31 may be three first heat exchange parts 31 arranged continuously in the first direction F1, or may be three first heat exchange parts 31 arranged discontinuously, as long as in the first direction F1, the medium inlet 301 and the medium outlet 302 can be arranged at intervals along the first direction F1 and the medium inlet 301 is located between the two medium outlets 302.

[0139] In some embodiments, Fig.11 As shown, the seventh flow paths 316 of the first heat exchange part 31 located on the same side of the medium inlet 301 are connected in series, and are connected in series between the medium inlet 301 and the medium outlet 302 on the corresponding side.

[0140] The flow path formed by the seventh flow paths 316 of the first heat exchange parts 31 located on the same side of the medium inlet 301 connected in series has a shorter flow path length than the seventh flow paths 316 of all the first heat exchange parts 31 connected in series. The heat exchange medium flowing into the medium inlet 301 can flow to both sides in the first direction F1, and exchange heat with the battery devices 20 on both sides through the shorter flow path, which can improve the temperature difference and heat exchange effect between the heat exchange medium and the battery device 20 near the medium outlet 302, so that the temperature uniformity of multiple battery devices 20 is better.

[0141] In other embodiments, Fig.12 As shown, the seventh flow paths 316 of the first heat exchange part 31 located on the same side of the medium inlet 301 are connected in parallel, and are connected in parallel between the medium inlet 301 and the medium outlet 302 on the corresponding side.

[0142] The seventh flow paths 316 of the first heat exchange part 31 located on the same side of the medium inlet 301 are connected in parallel, so that the heat exchange medium flowing into the medium inlet 301 can flow to both sides in the first direction F1 and exchange heat with the corresponding battery devices 20 through multiple seventh flow paths 316 respectively. The heat exchange medium flows to the multiple seventh flow paths 316 at a faster speed and has better heat exchange uniformity with the multiple battery devices 20.

[0143] According to some embodiments of the present invention, Figure 6 As shown, a reserved gap 303 is spaced between two adjacent first heat exchange parts 31, the second heat exchange part 32 extends along the first direction F1, and the second heat exchange part 32 is connected to the same end of multiple first heat exchange parts 31 in the second direction F2, and the first direction F1, the second direction F2 and the up and down directions F3 intersect each other.

[0144] The value of the reserved gap 303 can be flexibly set according to the installation space layout and installation requirements. For example, the value of the reserved gap 303 can be adjusted according to the distance between two adjacent battery devices 20 in the first direction F1, or the value of the reserved gap 303 can be adjusted according to the size of the structure required to be arranged in the reserved gap 303 (such as the supporting longitudinal beam 12 of the mounting frame 10, etc.).

[0145] The second heat exchange part 32 extends along the first direction F1 and is in the shape of a long strip; the same end of multiple first heat exchange parts 31 in the second direction F2 is connected to the second heat exchange part 32, so that one end of the reserved gap 303 in the second direction F2 is blocked by the second heat exchange part 32 and the other end is open. When the thermal management component 30 is installed on the mounting frame 10, other structures can be moved into the reserved gap 303 through the open end of the reserved gap 303, which is not easy to cause interference, making it convenient to install the thermal management component 30 with a larger area on the mounting frame 10.

[0146] In some embodiments, Figure 3 and Figure 4 As shown, the mounting frame 10 includes a supporting longitudinal beam 12 , and two adjacent mounting bins 111 of the same bin group 11 are respectively located on both sides of the supporting longitudinal beam 12 in the first direction F1 , the supporting longitudinal beam 12 is located in the reserved gap 303 , and the first heat exchange part 31 is supported and installed on the supporting longitudinal beam 12 .

[0147] The supporting longitudinal beam 12 may be a column structure, a plate structure, a cross beam structure, etc. extending along the vertical direction F3. For example, in some specific embodiments, the supporting longitudinal beam 12 includes a plurality of columns and a plurality of connecting beams. The columns extend along the vertical direction F3 and are arranged at intervals along the second direction F2. The connecting beam connects two adjacent columns. The supporting longitudinal beam 12 enables the mounting frame 10 to form a multi-layer bin group 11 and has good overall structural stability.

[0148] The supporting longitudinal beam 12 can move into the reserved gap 303 through the open end of the reserved gap 303. In other words, the thermal management component 30 can be moved along the second direction F2 and installed on the mounting bracket 10. After moving into position, the supporting longitudinal beam 12 is located in the reserved gap 303, so that the thermal management component 30 and the mounting bracket are not easily interfered. In addition, the supporting longitudinal beam 12 can provide support for the first heat exchange part 31 on both sides in the first direction F1, so that the two side edges of the first heat exchange part 31 in the first direction F1 can be supported by the two supporting longitudinal beams 12, thereby improving the stability of the first heat exchange part 31.

[0149] The supporting longitudinal beam 12 may directly support the first heat exchange part 31 or indirectly support the first heat exchange part 31 . For example, the supporting longitudinal beam 12 may be provided with a slot, and the first heat exchange part 31 is inserted into the slot to achieve support of the first heat exchange part 31 by the supporting longitudinal beam 12 .

[0150] In some specific embodiments, continue to refer to Figure 4 and Figure 5 As shown, a support plate 13 is provided on one side of the support longitudinal beam 12 facing the installation chamber 111 , and the first heat exchange portion 31 is supported on the support plate 13 and connected to the support plate 13 via fasteners.

[0151] The support plate 13 may support part of the first heat exchange part 31 or the entire first heat exchange part 31. For example, the support plate 13 may be a long strip extending along the second direction F2 or may include a plurality of sections of plates spaced apart along the second direction F2; the size of the support plate 13 in the first direction F1 may be smaller than the first heat exchange part 31, so as to achieve reliable support for the first heat exchange part 31, reduce weight and cost, and reduce shielding between the first heat exchange part 31 and the battery device 20, thereby improving heat exchange efficiency; the size of the support plate 13 in the first direction F1 may also be equal to the first heat exchange part 31, so as to increase the support area and further improve support reliability.

[0152] The first heat exchange part 31 is supported by the support plate 13, so the support area is larger and the support stability of the first heat exchange part 31 is better. In addition, the support plate 13 is arranged on the support longitudinal beam 12, so that the support longitudinal beam 12 indirectly supports the first heat exchange part 31, so that there is no need to provide grooves, notches and other structures on the support longitudinal beam 12. The support plate 13 can also play a structural reinforcement role on the support longitudinal beam 12, so as to improve the overall structural strength of the mounting frame 10 and the support reliability of the thermal management component 30 and the battery device 20.

[0153] The fastener connects the first heat exchange part 31 and the support plate 13, and the fastener may be, but not limited to, a bolt, a buckle, etc. The connection position of the fastener may be, but not limited to, one end of the support plate 13 in the second direction F2, the middle of the support plate 13 in the second direction F2, etc. In some specific embodiments, the end wall of one end of the support plate 13 in the second direction F2 is provided with a first mounting hole, the first heat exchange part 31 is provided with a second mounting hole opposite to the first mounting hole, and the fastener is passed through the first mounting hole and the second mounting hole to achieve the connection between the first heat exchange part 31 and the support plate 13.

[0154] By connecting the first heat exchange part 31 and the support plate 13 by fasteners, the first heat exchange part 31 can be limited and locked in more directions, further improving the stability of fixing the first heat exchange part 31 on the support plate 13.

[0155] In some specific embodiments, continue to refer to Figure 4 and Figure 5 As shown, a limit plate 14 is provided on the side of the supporting longitudinal beam 12 facing the installation bin 111 , and the limit plate 14 is spaced apart from the first heat exchange part 31 along the up and down direction F3 , and the battery device 20 has a limit flange 21 , and the limit flange 21 is located between the limit plate 14 and the first heat exchange part 31 .

[0156] The limiting plate 14 and the supporting longitudinal beam 12 may be directly connected by welding, clamping or the like, or may be indirectly connected. For example, in some embodiments including the supporting plate 13, the limiting plate 14 may be connected to the supporting plate 13 via a connecting plate, and the connecting plate and the supporting longitudinal beam 12 may be connected by welding or the like, so that a gap is formed between the limiting plate 14 and the supporting plate 13, and the first heat exchange part 31 may be located between the supporting plate 13 and the limiting plate 14.

[0157] The limiting plate 14 may be a long strip plate extending along the second direction F2, or may include multiple sections spaced apart along the second direction F2. The limiting flange 21 may be an annular structure, a long strip structure, etc. extending along the circumference of the battery device 20, or the limiting flange 21 may include multiple sections spaced apart along the circumference of the battery device 20.

[0158] In some specific embodiments, Fig.14 and Fig.15 As shown, the box body of the battery device 20 includes an upper box body, a bottom plate 23 and an annular seal, and the side panels 24 of the upper box body are provided with an outer flange, and an annular seal is provided between the outer flange and the outer periphery of the bottom plate 23 to achieve sealing, and fasteners are provided through the outer flange, the annular seal and the outer periphery of the bottom plate 23 to achieve connection, so that the outer flange, the annular seal and the outer periphery of the bottom plate 23 constitute a limiting flange 21. The limiting flange 21 is located between the limiting plate 14 and the first heat exchange portion 31 in the up-down direction F3, and the side panels 24 are located between the limiting plates 14 on the two supporting longitudinal beams 12 in the first direction F1.

[0159] By setting a limit plate 14, in cooperation with the first heat exchange part 31, the battery device 20 can be limited in the up and down direction F3, so that the battery device 20 is fixed and stable; and the limit plate 14 can cooperate with the support plate 13 to achieve the limitation of the first heat exchange part 31 in the up and down direction F3, so that the thermal management component 30 can be installed stably.

[0160] In some specific embodiments, a supporting cross beam is provided on one side of the supporting longitudinal beam 12 along the second direction F2 , the supporting cross beam extends along the first direction F1 , and the second heat exchange portion 32 is supported by the supporting cross beam.

[0161] The support beam can extend continuously or discontinuously along the first direction F1, and the extension dimension of the support beam along the first direction F1 can be greater than, less than or equal to the extension dimension of the second heat exchange portion 32, which is within the protection scope of the present invention. In addition, each support beam can be connected to one support longitudinal beam 12, or can be connected to multiple support longitudinal beams 12. For example, multiple support longitudinal beams 12 of the mounting frame 10 are all connected to the same support beam, so that the overall structural stability of the mounting frame 10 is better.

[0162] The second heat exchange part 32 is located outside the installation bin 111. By providing a supporting beam to support the second heat exchange part 32, the stability of the second heat exchange part 32 can be improved, thereby improving the overall structural strength and structural stability of the thermal management component 30. The connection between the first heat exchange part 31 and the second heat exchange part 32 is reliable and not prone to deformation and breakage.

[0163] According to some embodiments of the present invention, please refer to Figure 14-17 , Fig.14 A schematic diagram of the structure of a battery device 20 provided in an embodiment of the present invention; Fig.15 An exploded view of a battery device 20 provided in an embodiment of the present invention; Fig.16 A top view of a battery device 20 provided in an embodiment of the present invention; Fig.17 for Fig.16 The battery device 20 includes a box body, which includes a top plate 22, a bottom plate 23 and a side plate 24. The side plate 24 is located between the top plate 22 and the bottom plate 23 and connects the top plate 22 and the bottom plate 23 to define a receiving cavity for receiving a battery cell assembly.

[0164] In the up-down direction F3, the top plate 22 is located on the upper side of the bottom plate 23 and is separated from the bottom plate 23 to form a receiving cavity between the top plate 22 and the bottom plate 23. The side panels 24 can be integrally formed with one of the top plate 22 and the bottom plate 23, or the side panels 24 can be separate parts connected with the top plate 22 and the bottom plate 23. According to the shape of the box, the side panels 24, the top plate 22 and the bottom plate 23 can have different shapes, for example, the top plate 22 and the bottom plate 23 can be square, and the side panels 24 include a plurality of side walls connected end to end in sequence; for another example, the top plate 22 and the bottom plate 23 can be circular, and the side panels 24 are annular plates.

[0165] Among them, the distances between the bottom plate 23 and the top plate 22 and the battery cell assembly are relatively small. For example, the bottom plate 23 and the battery cell assembly can be in contact or bonded through an adhesive layer to achieve good thermal conductivity. A small gap can be formed between the top plate 22 and the battery cell assembly to improve the heat exchange effect.

[0166] In some embodiments, the bottom plate 23 is in contact with the first heat exchange portion 31 located in the same installation chamber 111. Contact means that there is no other structure between the bottom plate 23 and the installation chamber 111, and they can be in direct contact, which can be but not limited to surface contact.

[0167] Thus, the battery device 20 can exchange heat with the first heat exchange part 31 through the bottom plate 23, and there is no need to set other plates, air layers and other structures between the bottom plate 23 and the first heat exchange part 31, so that the heat exchange efficiency is higher, and the first heat exchange part 31 can support the battery device 20. Even if no additional structure for supporting the battery device 20 is set on the mounting frame 10, the battery device 20 can be stably placed.

[0168] In some embodiments, the top plate 22 is in contact or clearance fit with the first heat exchange part 31 located in the upper mounting chamber 111. Clearance fit means that a small gap is formed between the top plate 22 and the upper first heat exchange part 31, for example, the distance between the top plate 22 and the upper first heat exchange part 31 is less than or equal to 20 mm.

[0169] Therefore, the battery device 20 can not only exchange heat with the first heat exchange part 31 in the installation bin 111 where it is located, but also exchange heat with the first heat exchange part 31 in the installation bin 111 located above, thereby increasing the heat exchange area of ​​the battery device 20 and improving the temperature uniformity of different parts of the battery device 20 in the up and down direction F3.

[0170] Of course, in some embodiments, the bottom plate 23 of the battery device 20 can be in contact with and fit with the first heat exchange portion 31 located in the same mounting bin 111, and the top plate 22 can be in contact with and fit with the first heat exchange portion 31 located in the upper mounting bin 111 or have a clearance fit therewith, thereby better improving the heat exchange efficiency and heat exchange uniformity of the battery device 20.

[0171] The energy storage device 100 according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0172] like Figure 2-Figure 8 and Figure 14-17 As shown, the energy storage device 100 according to the first embodiment of the present invention includes: a container 60, a cooling unit, a mounting frame 10, eight thermal management components 30, forty battery devices 20, a water inlet pipe 40 and a water outlet pipe 50. The cooling unit and the mounting frame 10 are both located in the container 60, the battery devices 20 and the thermal management component 30 are installed on the mounting frame 10, and the thermal management component 30 is connected to the cooling unit through the water inlet pipe 40 and the water outlet pipe 50, so that the heat exchange medium circulates between the thermal management component 30 and the cooling unit, and the cooling unit can reduce the temperature of the heat exchange medium, so that the low-temperature heat exchange medium can exchange heat with the battery device 20 through the thermal management component 30 to reduce the temperature of the battery device 20.

[0173] The mounting frame 10 has eight layers of bin groups 11 arranged along the vertical direction F3, and each layer of bin group 11 includes five mounting bins 111 arranged along the left-right direction. In other words, the mounting bins 111 of the mounting frame 10 have five columns, and each column includes eight mounting bins 111 arranged along the vertical direction F3. Eight thermal management components 30 are installed in the eight layers of bin groups 11 in a one-to-one correspondence. Specifically, the thermal management component 30 includes five first heat exchange parts 31 and one second heat exchange part 32. The second heat exchange part 32 connects the front ends of the five first heat exchange parts 31. The first heat exchange part 31 is inserted into the mounting bin 111 and is located between the support plate 13 and the limit plate 14. Forty battery devices 20 are installed in the mounting bin 111 in a one-to-one correspondence, and the limit flange 21 of the battery device 20 is located between the first heat exchange part 31 and the limit plate 14.

[0174] In the same thermal management component 30, the rear end of the first heat exchange part 31 located at the right end is provided with a medium inlet 301 and a medium outlet 302, and the flow paths of the five first heat exchange parts 31 are connected in series and are connected in series between the medium inlet 301 and the medium outlet 302. The water inlet pipe 40 is generally arranged along the up-down direction F3 to communicate with the medium inlets 301 of the five thermal management components 30, and the water outlet pipe 50 is generally arranged along the up-down direction F3 to communicate with the medium outlets 302 of the five thermal management components 30.

[0175] In the above embodiment, the thermal management component 30 is arranged outside the battery device 20 and installed on the mounting frame 10. Each layer of battery devices 20 shares a thermal management component 30. The entire energy storage device 100 only requires one row of water inlet pipes 40 and one row of water outlet pipes 50, which reduces the length of the pipeline, reduces the pipeline connection, and reduces the risk of leakage of the heat exchange medium.

[0176] like Fig. 9 The figure shows a thermal management component 30 of an energy storage device 100 according to a second embodiment of the present invention, which differs from the first embodiment in that: on the same thermal management component 30, the flow paths of the five first heat exchange parts 31 are connected in parallel, and are connected in parallel between the medium inlet 301 and the medium outlet 302, so that the temperature uniformity of the five first heat exchange parts 31 is better, thereby making the temperature control uniformity of the multiple battery devices 20 better.

[0177] like Fig.10The third embodiment of the present invention shows a heat management component 30 of an energy storage device 100, which is different from the first embodiment in that: on the same heat management component 30, the first heat exchange part 31 at the left end and the first heat exchange part 31 at the right end are both provided with a medium inlet 301 and a medium outlet 302, each first heat exchange part 31 is provided with a fifth flow path 314 and a sixth flow path 315, the fifth flow paths 314 of the five first heat exchange parts 31 are connected in series and connected in series between the medium inlet 301 at the left end and the medium outlet 302 at the right end, and the sixth flow paths 315 of the five first heat exchange parts 31 are connected in series and connected in series between the medium outlet 302 at the left end and the medium inlet 301 at the right end. This embodiment forms two flow paths with opposite flow directions, so that the temperature control uniformity of multiple battery devices 20 is better.

[0178] like Fig.11 The fourth embodiment of the present invention is shown as a heat management component 30 of an energy storage device 100, which is different from the first embodiment in that: on the same heat management component 30, a medium inlet 301 is provided in the middle of the second heat exchange part 32, and a medium outlet 302 is provided at the left and right first heat exchange parts 31, and the flow paths of the two first heat exchange parts 31 on the left are connected in series and connected in series between the left medium outlet 302 and the flow path of the middle first heat exchange part 31, and the flow paths of the two first heat exchange parts 31 on the right are connected in series and connected in series between the right medium outlet 302 and the flow path of the middle first heat exchange part 31. This embodiment reduces the length of each flow path between the medium inlet 301 and the medium outlet 302, thereby making the temperature control uniformity of multiple battery devices 20 better.

[0179] like Fig.12 The fourth embodiment of the present invention is a heat management component 30 of an energy storage device 100, which is different from the first embodiment in that: on the same heat management component 30, a medium inlet 301 is provided in the middle of the second heat exchange part 32, and the first heat exchange parts 31 at the left and right ends are provided with medium outlets 302, and the flow paths of the five first heat exchange parts 31 are connected in parallel and in parallel between the medium inlet 301 and the medium outlet 302. This embodiment allows the heat exchange medium to flow into the multiple first heat exchange parts 31 more quickly and evenly for heat exchange, thereby making the temperature control uniformity of the multiple battery devices 20 better.

[0180] like Figure 1 , Figure 6 and Fig.14As shown, the battery system 200 according to the embodiment of the present invention includes a plurality of battery devices 20 and a thermal management component 30. The plurality of battery devices 20 are arranged along a first direction, and the battery device 20 includes a box body and a battery monomer assembly arranged in the box body; the thermal management component 30 includes a plurality of first heat exchange parts 31 and at least one second heat exchange part 32, and the plurality of first heat exchange parts 31 are arranged outside the plurality of battery devices 20 in a one-to-one correspondence and are used to exchange heat with the battery devices 20, and the plurality of first heat exchange parts 31 are connected through the second heat exchange part 32. Among them, at least two first heat exchange parts 31 are connected through the second heat exchange part 32, so that the number of at least one of the medium inlet 301 and the medium outlet 302 of the thermal management component 30 is less than the number of the first heat exchange parts 31.

[0181] The thermal management component 30 is located outside the battery device 20. The thermal management component 30 can exchange heat with the battery device 20 and with the air around the battery device 20, so that the surrounding air can flow to contact the entire outer surface of the battery device 20, that is, heat is exchanged through the entire outer surface of the battery device 20, rather than being limited to the surface that is in direct contact with the thermal management component 30, so that the heat exchange area is larger and the heat exchange on the surfaces on different sides of the battery device 20 is more uniform, which is beneficial to improving the temperature control effect and efficiency of the battery device 20.

[0182] In addition, at least two first heat exchange parts 31 are connected through the second heat exchange part 32, so that the number of medium inlets 301 arranged on the thermal management component 30 is less than the number of first heat exchange parts 31, or the number of medium outlets 302 can be less than the number of first heat exchange parts 31, or the number of medium inlets 301 and medium outlets 302 are both less than the number of first heat exchange parts 31.

[0183] By reducing the number of at least one of the medium inlet 301 and the medium outlet 302, the external piping of the thermal management component 30 can be reduced, for example, the number of cold pipes between the thermal management component 30 and the cooling unit is reduced, and there is no need to connect each first heat exchange part 31 to the external piping, thereby greatly reducing the length of the pipeline and the number of joints, and effectively reducing the complexity. On the one hand, the efficiency of assembly is improved, and on the other hand, the pipeline seal is not easily failed, thereby reducing the risk of leakage of the heat exchange medium.

[0184] Furthermore, since the thermal management component 30 is located outside the battery device 20, the battery device 20 and the thermal management component 30 can be independently disassembled and replaced. When the battery device 20 is damaged or its service life is exhausted, only the damaged or exhausted battery device 20 can be replaced without disassembling and replacing the thermal management component 30, which is beneficial to reducing the use and maintenance costs of the energy storage device 100.

[0185] According to the battery system 200 of the embodiment of the present invention, by providing multiple battery devices 20 and a thermal management component 30 located outside the battery device 20, the thermal management component 30 and the battery device 20 can both exchange heat by contact and indirectly, which is beneficial to increasing the heat exchange area and improving the heat exchange effect; and the multiple first heat exchange parts 31 of the thermal management component 30 are connected to at least one second heat exchange part 32 as a whole, and at least two first heat exchange parts 31 are connected, so that the external pipeline of the thermal management component 30 is short in length, the number of joints is small, and the pipeline is simpler, which is beneficial to reducing the risk of leakage of the heat exchange medium and the cost.

[0186] like Figure 1 As shown, the electric device according to the embodiment of the present invention includes the battery system 200 according to the embodiment of the present invention, and the battery device 20 is used to provide electric energy for the electric device. Therefore, by adopting the above-mentioned battery system 200, it is beneficial to increase the heat exchange area, improve the heat exchange effect, and make the external pipe length of the thermal management component 30 short, the number of joints is small, the pipe is simpler, and it is beneficial to reduce the risk of heat exchange medium leakage and cost.

[0187] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0188] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An energy storage device, characterized in that: include: A mounting frame, the mounting frame having a multi-layered bin group arranged in an up-down direction, the bin group including a plurality of mounting bins arranged in a first direction, the mounting bins being used to accommodate a battery device, the battery device including a box body and a battery cell assembly disposed in the box body, the first direction intersecting the up-down direction; A plurality of thermal management components, the thermal management components comprising a plurality of first heat exchange parts and at least one second heat exchange part, the plurality of first heat exchange parts are arranged one by one in the plurality of installation bins of the same bin group, the first heat exchange part is located outside the box and is used to exchange heat with the battery device, the plurality of first heat exchange parts are connected through the second heat exchange part, wherein, At least two of the first heat exchange parts are connected in series through the second heat exchange part, so that the number of medium inlets and / or medium outlets of the heat management component is less than the number of the first heat exchange parts; The medium inlets of the plurality of thermal management components are arranged along the up-down direction, and the medium outlets of the plurality of thermal management components are arranged along the up-down direction; A water inlet pipe and a water outlet pipe, the medium inlets of the plurality of thermal management components are connected to the water inlet pipe, and the medium outlets of the plurality of thermal management components are connected to the water outlet pipe.

2. The energy storage device according to claim 1, characterized in that The installation bin has an opening at one end along the second direction, and the battery device is suitable for being installed in the installation bin through the opening. The first direction, the second direction and the up and down directions intersect each other, and the water inlet pipe and the water outlet pipe are arranged at the end of the thermal management component away from the opening in the second direction.

3. The energy storage device according to any one of claims 1 to 2, characterized in that: The medium inlet and the medium outlet of the same thermal management component are arranged in the same first heat exchange part, and the flow channels of a plurality of the first heat exchange parts are all connected with the medium inlet and the medium outlet.

4. The energy storage device according to claim 3, characterized in that: The first heat exchange part at one end in the first direction is provided with the medium inlet and the medium outlet, and the first heat exchange part is provided with a first flow path extending in a zigzag manner. The first flow paths of multiple first heat exchange parts are connected in series in the first direction and are connected in series between the medium inlet and the medium outlet.

5. The energy storage device according to claim 3, characterized in that: The first heat exchange part at one end in the first direction is provided with the medium inlet and the medium outlet, and the first heat exchange part is provided with a first flow path extending in a zigzag manner. The first flow paths of multiple first heat exchange parts are connected in parallel and in parallel between the medium inlet and the medium outlet.

6. The energy storage device according to claim 4 or 5, characterized in that: The first heat exchange part at one end in the first direction is provided with a second flow path extending in the second direction, the second flow path is connected to the medium inlet, the first heat exchange part at the other end in the first direction is provided with a third flow path extending in the second direction, the second heat exchange part is provided with a fourth flow path extending in the first direction, the fourth flow path connects the second flow path and the third flow path to form a U-shaped flow path, and the U-shaped flow path forms a U-shaped area, The first flow paths of the plurality of first heat exchange parts are located in the U-shaped region, and the first flow paths are communicated with the U-shaped flow paths.

7. The energy storage device according to any one of claims 1 to 2, characterized in that: The first heat exchange part at both ends in the first direction is provided with the medium inlet and the medium outlet, and the first heat exchange part is provided with a fifth flow path and a sixth flow path extending in a zigzag manner, wherein: The fifth flow paths of the plurality of the first heat exchange parts are connected in series, and are connected in series between the medium inlet of one of the first heat exchange parts and the medium outlet of another of the first heat exchange parts; The sixth flow paths of the plurality of first heat exchange parts are connected in series, and are connected in series between the medium outlet of one of the first heat exchange parts and the medium inlet of another of the first heat exchange parts.

8. The energy storage device according to any one of claims 1 to 2, characterized in that: In any three of the first heat exchange parts in the first direction, the first heat exchange parts at both ends are respectively provided with the medium outlet, the first heat exchange part or the second heat exchange part in the middle is provided with the medium inlet, and the first heat exchange part is provided with a seventh flow path extending in a zigzag manner, wherein: The seventh flow path of the first heat exchange part located on the same side of the medium inlet is connected in series, and is connected in series between the medium inlet and the medium outlet on the corresponding side; or, The seventh flow paths of the first heat exchange part located on the same side of the medium inlet are connected in parallel, and are connected in parallel between the medium inlet and the medium outlet on the corresponding side.

9. The energy storage device according to claim 1, characterized in that: A reserved gap is spaced between two adjacent first heat exchange parts, the second heat exchange part extends along the first direction, and the second heat exchange part is connected to the same end of multiple first heat exchange parts in the second direction, and the first direction, the second direction and the up and down directions intersect each other.

10. The energy storage device according to claim 9, characterized in that: The mounting frame includes a supporting longitudinal beam, two adjacent mounting bins of the same bin group are respectively located on both sides of the supporting longitudinal beam in a first direction, the supporting longitudinal beam is located in the reserved gap, and the first heat exchange part is supported and installed on the supporting longitudinal beam.

11. The energy storage device according to claim 10, characterized in that: A support plate is provided on one side of the support longitudinal beam facing the installation bin, and the first heat exchange part is supported on the support plate and connected to the support plate via a fastener.

12. The energy storage device according to claim 10, characterized in that: A limiting plate is provided on one side of the supporting longitudinal beam facing the installation bin, the limiting plate is spaced apart from the first heat exchange part in the up-down direction, and the battery device has a limiting flange, the limiting flange is located between the limiting plate and the first heat exchange part.

13. The energy storage device according to claim 10, characterized in that: A supporting cross beam is provided on one side of the supporting longitudinal beam along the second direction. The supporting cross beam extends along the first direction, and the second heat exchange portion is supported by the supporting cross beam.

14. The energy storage device according to claim 1, characterized in that: The box body includes a top plate, a bottom plate and a side plate, wherein the side plate is located between the top plate and the bottom plate and connects the top plate and the bottom plate to define a receiving cavity for receiving the battery cell assembly, wherein: The bottom plate is in contact with and cooperates with the first heat exchange part located in the same installation bin; and / or, The top plate is in contact fit or clearance fit with the first heat exchange portion of the installation bin located above.

15. A battery system, characterized in that: include: A plurality of battery devices, wherein the plurality of battery devices are arranged along a first direction, and the battery device comprises a box body and a battery cell assembly disposed in the box body; The first direction intersects the up-down direction; A thermal management component, the thermal management component comprising a plurality of first heat exchange parts and at least one second heat exchange part, the plurality of first heat exchange parts are arranged outside the plurality of battery devices in a one-to-one correspondence and are used to exchange heat with the battery devices, the plurality of first heat exchange parts are connected through the second heat exchange part, wherein, At least two of the first heat exchange parts are connected in series through the second heat exchange part, so that the number of medium inlets and / or medium outlets of the heat management component is less than the number of the first heat exchange parts; The medium inlets of the plurality of thermal management components are arranged along the up-down direction, and the medium outlets of the plurality of thermal management components are arranged along the up-down direction; A water inlet pipe and a water outlet pipe, the medium inlets of the plurality of thermal management components are connected to the water inlet pipe, and the medium outlets of the plurality of thermal management components are connected to the water outlet pipe.

16. An electrical device, characterized in that: Comprising the battery system according to claim 15, the battery device is used to provide electrical energy to the electrical device.

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