Solid-state battery module, power supply system, and vehicle

Abstract

The application relates to a solid-state battery module, a power supply system and a vehicle, which comprise a shell, a solid-state battery pack located on the inner side of the shell, a movable assembly located between the shell and the solid-state battery pack, the movable assembly abuts against the solid-state battery pack, the abutting surface of the movable assembly and the solid-state battery pack is perpendicular to the thickness direction of the solid-state battery pack, the movable assembly is used for applying pressure to the solid-state battery pack, a controller assembly is connected with the movable assembly and the solid-state battery pack, and is used for controlling the movable assembly to move away from the solid-state battery pack along the thickness direction when the solid-state battery pack is charged, and controlling the movable assembly to move towards the solid-state battery pack along the thickness direction when the solid-state battery pack is discharged. The application continuously applies pressure to the solid-state battery pack through the movable assembly to ensure the stability of the internal interface of the solid-state battery pack, solves the high expansion characteristics of the solid-state battery through the movement of the movable assembly, and improves the service life and safety of the solid-state battery pack.

Description

Technical Field

[0001] This application relates to the field of secondary battery integration technology, specifically to a solid-state battery module, a power system, and a vehicle. Background Technology

[0002] Solid-state batteries, with their high energy density and high safety, are increasingly being used in devices such as vehicles. However, to maintain efficient operation, solid-state batteries require stable internal interfaces. Their high expansion rate during charging and discharging causes volume changes, which existing battery housings cannot meet the requirements, resulting in poor integration, reduced lifespan, and decreased safety. Utility Model Content

[0003] One objective of this application is to provide a solid-state battery module to solve the problem of poor battery integration caused by the high expansion characteristics of solid-state batteries in the prior art; another objective is to provide a power system; and a third objective is to provide a vehicle.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] In a first aspect of this application, embodiments of this application disclose a solid-state battery module, comprising:

[0006] Housing; solid-state battery pack located inside the housing;

[0007] A movable component is located between the housing and the solid-state battery pack; the movable component abuts against the solid-state battery pack, and the abutment surface of the movable component against the solid-state battery pack is perpendicular to the thickness direction of the solid-state battery pack; the movable component is used to apply pressure to the solid-state battery pack.

[0008] A controller assembly, connected to the active component and the solid-state battery pack, is used to control the active component to move away from the solid-state battery pack along the thickness direction when the solid-state battery pack is charging, and to control the active component to move closer to the solid-state battery pack along the thickness direction when the solid-state battery pack is discharging.

[0009] Optionally, the active component includes: an actuator and an active plate;

[0010] One end of the actuator is fixed to the housing, and the other end is connected to the movable plate for driving the movable plate; the movable plate abuts against the solid-state battery pack.

[0011] Optionally, the actuator includes: an actuation structure symmetrical along the height direction of the solid-state battery pack, one end of the actuation structure being fixed to the housing and the other end being connected to the movable plate for driving the movable plate.

[0012] Optionally, the length of the movable plate along the height direction of the solid-state battery pack is greater than the height of the solid-state battery pack.

[0013] Optionally, the execution structure includes:

[0014] The fixed end is fixedly connected to the housing;

[0015] The movable end is fixedly connected to the movable plate;

[0016] A telescopic arm, located between the fixed end and the movable end, is used to drive the movable end to move the movable plate.

[0017] Optionally, the housing, the telescopic arm, and the movable plate enclose the solid-state battery pack.

[0018] Optionally, the travel distance of the active component is greater than the difference in thickness due to expansion and contraction of the solid-state battery pack over its lifetime; and / or,

[0019] The workload of the active component is greater than the pressure exerted on the active component by the solid-state battery pack.

[0020] Optionally, a gap is provided between the movable plate and the housing.

[0021] Optionally, it also includes:

[0022] An electrical connection assembly is connected to the solid-state batteries in the solid-state battery pack, for connecting the solid-state batteries in the solid-state battery pack in series or in parallel.

[0023] Optionally, it also includes:

[0024] A signal acquisition component is connected to the solid-state battery in the solid-state battery pack and is used to acquire the battery status of the solid-state battery in the solid-state battery pack and transmit it to the controller component.

[0025] In a second aspect of this application, embodiments of this application disclose a power system including a solid-state battery module as described above.

[0026] In a third aspect of this application, embodiments of this application disclose a vehicle including the power system described above.

[0027] The beneficial effects of this application are:

[0028] This embodiment of the application uses a movable component located between the housing and the solid-state battery pack. The movable component abuts against the solid-state battery pack, and the contact surface between the movable component and the solid-state battery pack is perpendicular to the thickness direction of the solid-state battery pack. The movable component is used to apply pressure to the solid-state battery pack. When the solid-state battery pack is charging, the controller component controls the movable component to move away from the solid-state battery pack along the thickness direction. When the solid-state battery pack is discharging, the controller component controls the movable component to move closer to the solid-state battery pack along the thickness direction. In the event of volume changes such as expansion or contraction of the solid-state battery pack, the controller component can control the movable component to adapt to the corresponding changes, moving closer to or away from the solid-state battery pack along the thickness direction to adjust and fix the space for installing the solid-state battery pack, so that the solid-state battery pack can be stably and safely installed in the housing. Furthermore, by abutting against the solid-state battery pack, the movable component applies pressure to the solid-state battery pack, providing continuous pressure. Even when the solid-state battery pack undergoes volume changes such as expansion or contraction, the pressure applied by the movable component can ensure the stability of the internal interface of each solid-state battery in the solid-state battery pack, thereby improving the lifespan and safety of the solid-state battery pack. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a solid-state battery module structure according to an embodiment of this application;

[0030] Figure 2 This is a first-view structural diagram of another solid-state battery module according to an embodiment of this application;

[0031] Figure 3 This is a second-view structural diagram of another solid-state battery module according to an embodiment of this application;

[0032] Figure 4 This is an exploded view of the solid-state battery in the solid-state battery pack of this application embodiment;

[0033] Figure 5 This is a schematic diagram of the solid-state battery arrangement in an embodiment of the present application.

[0034] Figure 6 This is a schematic diagram illustrating the range of motion of the active components of another solid-state battery module according to an embodiment of this application.

[0035] Explanation of reference numerals in the attached drawings: 100-Housing, 200-Solid-state battery pack, 210-Solid-state battery, 211-Taper, 212-Outer insulation, 213-Electrode assembly, 300-Moving assembly, 310-Actuator, 311-Fixed end, 312-Moving end, 313-Telescopic arm, 320-Moving plate, 400-Electrical connection assembly, 500-Signal acquisition assembly. Detailed Implementation

[0036] The embodiments of this application will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be understood that the preferred embodiments are only for illustrating this application and are not intended to limit the scope of protection of this application.

[0037] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0038] Solid-state batteries exhibit expansion characteristics during use. During charging and discharging, solid-state batteries show more significant volume changes than liquid-state batteries. This expansion may be due to structural changes caused by ion insertion and extraction during charging and discharging; internal thermal stress may also contribute to expansion; batteries are prone to expansion when used in environments with alternating high and low temperatures; changes in external humidity may affect battery expansion; and uneven current density distribution can also affect the battery structure, leading to expansion. Taking a sulfide all-solid-state battery as an example, during a 6-hour resting period, the battery thickness gradually decreases; as charging begins, the battery expands, reaching 8 μm when first charged to 100% SOC (State of Charge), with an expansion rate approaching 7%; subsequently, during the first discharge cycle, the battery thickness shrinks, but only by 4.5 μm, showing significant irreversible expansion. Therefore, solid-state battery modules composed of solid-state batteries will expand throughout their entire lifespan. However, reserving large space in advance for the expansion of solid-state battery modules would result in a large integrated module volume, which is detrimental to solid-state battery module integration. If no space is reserved, the expansion of the solid-state battery module may cause dangerous situations such as the power battery exploding. In order to avoid the above problems, the embodiments of this application are proposed.

[0039] Reference Figure 1 The diagram shows a schematic of a solid-state battery 210 module structure according to an embodiment of this application; the solid-state battery 210 module includes:

[0040] Housing 100; Solid-state battery pack 200 located inside the housing 100;

[0041] A movable component 300 is located between the housing 100 and the solid-state battery pack 200; the movable component 300 abuts against the solid-state battery pack 200, and the abutment surface of the movable component 300 against the solid-state battery pack 200 is perpendicular to the thickness direction of the solid-state battery pack 200; the movable component 300 is used to apply pressure to the solid-state battery pack 200.

[0042] A controller component (not shown in the figure) is connected to the active component 300 and the solid-state battery pack 200. When the solid-state battery pack 200 is charging, the controller controls the active component 300 to move away from the solid-state battery pack 200 along the thickness direction. When the solid-state battery pack 200 is discharging, the controller controls the active component 300 to move closer to the solid-state battery pack 200 along the thickness direction.

[0043] An electrical connection assembly 400 is connected to a solid-state battery 210 in the solid-state battery pack 200, and is used to connect the solid-state batteries 210 in the solid-state battery pack 200 in series or in parallel.

[0044] The signal acquisition component 500 is connected to the solid-state battery 210 in the solid-state battery pack 200 and is used to acquire the battery status of the solid-state battery 210 in the solid-state battery pack 200 and transmit it to the controller component.

[0045] In this embodiment, the solid-state battery 210 module may include a housing 100, a solid-state battery pack 200, a movable component 300, an electrical connection component 400, and a signal acquisition component 500. The housing 100 serves as a base for housing and mounting; the solid-state battery pack 200, movable component 300, electrical connection component 400, and signal acquisition component 500 can all be installed within the housing 100. The housing 100 can be a sealed chamber to ensure the battery's sealing requirements. The solid-state battery pack 200 can be disposed inside the housing 100, i.e., installed within the housing 100 and sealed by the housing 100. The solid-state battery pack 200 can be composed of multiple solid-state batteries 210 arranged along the thickness direction of the solid-state battery 210. The solid-state battery 210 consists of three parts: a positive electrode, a negative electrode, and a solid electrolyte. The solid electrolyte simultaneously serves to transport lithium ions and isolate the positive and negative electrodes. The positive electrode material can use traditional lithium-ion battery positive electrode materials such as lithium iron phosphate, lithium manganese oxide, lithium cobalt oxide, and ternary NCM, among which high-nickel ternary materials and lithium-rich manganese-based materials are more commonly used. The negative electrode material can be a nano-silicon-carbon negative electrode, a lithium-carbon composite negative electrode, or a lithium metal negative electrode material. The solid electrolyte can be a polymer, oxide, or sulfide. Polymer materials include, but are not limited to, polyethylene oxide, polypropylene carbonate, polyacrylonitrile, and thermoplastic polyurethane. Oxide materials include, but are not limited to, lithium lanthanum zirconium titanium oxide / lithium lanthanum zirconium oxide, lithium aluminum titanium phosphate, and lithium zirconium silicon phosphorus oxide. Sulfide materials include, but are not limited to, lithium sulfide, germanium, phosphorus, and silicon. It should be noted that the solid-state battery 210 described in this application includes a semi-solid-state battery 210 (liquid electrolyte percentage of 5-10 wt%), a quasi-solid-state battery 210 (liquid electrolyte percentage of 0-5 wt%), and an all-solid-state battery 210 (liquid electrolyte percentage of 0 wt%).

[0046] The movable component 300 is installed between the housing 100 and the solid-state battery pack 200, and abuts against the solid-state battery pack 200; that is, one end of the movable component 300 is connected to the inside of the housing 100, and the other end abuts against the solid-state battery pack 200. The movable component 300 and the housing clamp the solid-state battery pack 200, and the movable component 300 applies pressure to the solid-state battery pack 200. Under the pressure applied by the movable component 300, the interface inside the battery pack 200 can maintain a stable pressure, ensuring the stable operation of the solid-state battery pack 200. The controller component is connected to the movable component 300 and the solid-state battery pack 200, and can receive information from the solid-state battery pack 200 and also control the movable component 300. The controller assembly can control the movable component 300 to move away from the solid-state battery pack 200 along the thickness direction when the solid-state battery pack 200 is charging; and control the movable component 300 to move closer to the solid-state battery pack 200 along the thickness direction when the solid-state battery pack 200 is discharging. This reciprocating motion along the thickness direction of the solid-state battery pack provides continuous pressure for the expansion and contraction of the solid-state battery pack 200. When the solid-state battery pack 200 is charging, it expands in the thickness direction, and the movable component 300 moves away from the solid-state battery pack 200 in a direction perpendicular to the contact surface, increasing the space occupied by the solid-state battery pack 200. Conversely, when the solid-state battery pack 200 is discharging, it contracts in the thickness direction, and the movable component 300 moves closer to the solid-state battery pack 200 in a direction perpendicular to the contact surface, decreasing the space occupied by the solid-state battery pack 200. By adjusting and fixing the size of the space for installing the solid-state battery pack 200, the solid-state battery pack 200 can be stably and safely installed within the housing 100, ensuring integration and safety. The movable component 300 can provide a pressure of 2MPa-100MPa to effectively control the pressure of the solid-state battery pack 200, ensuring the stability of the installation space of the solid-state battery pack 200. The specific type of the controller component can be determined according to actual needs, and this embodiment does not limit it. Examples include programmable logic controllers, industrial computers, microcontrollers, etc.

[0047] The electrical connection assembly 400 is connected to each solid-state battery 210 in the solid-state battery pack 200, connecting the solid-state batteries 210 in series or parallel sequentially, so that the solid-state batteries 210 can be integrated into the solid-state battery pack 200. The electrical connection assembly 400 can be a high-voltage connection harness with a voltage withstand range of 300V to 1000V.

[0048] The signal acquisition component 500 can be a low-voltage wiring harness, capable of operating on 12V or 24V. The signal acquisition component 500 can connect to each solid-state battery 210 in the solid-state battery pack 200, and can acquire the battery state of the solid-state batteries 210 in the solid-state battery pack 200. The signal acquisition component 500 also transmits the battery state to the controller component, which controls the movement of the active component 300 based on the battery state.

[0049] In this embodiment, a movable component 300 is located between the housing 100 and the solid-state battery pack 200. The movable component 300 abuts against the solid-state battery pack 200, and the contact surface between the movable component 300 and the solid-state battery pack 200 is perpendicular to the thickness direction of the solid-state battery pack 200. The movable component 300 is used to apply pressure to the solid-state battery pack 200. When the solid-state battery pack 200 is charging, the controller component controls the movable component 300 to move away from the solid-state battery pack 200 along the thickness direction. When the solid-state battery pack 200 is discharging, the controller component controls the movable component 300 to move closer to the solid-state battery pack 200 along the thickness direction. When the solid-state battery pack 200 undergoes volume changes such as expansion or contraction, the controller component can control the movable component 300 to adapt to the corresponding changes, moving it closer to or away from the solid-state battery pack 200 along the thickness direction, adjusting and fixing the space for installing the solid-state battery pack 200, so that the solid-state battery pack 200 can be stably and safely installed within the housing 100. Furthermore, the movable component 300 abuts against the solid-state battery pack 200, applying pressure to the solid-state battery pack 200 through the movable component 300. This provides continuous pressure to the solid-state battery pack 200, ensuring the stability of the internal interface of each solid-state battery in the solid-state battery pack 200 even if the solid-state battery pack 200 undergoes volume changes such as expansion or contraction. This improves the lifespan and safety of the solid-state battery pack 200.

[0050] Reference Figure 2 This shows a first-view structural schematic diagram of another solid-state battery 210 module according to an embodiment of this application; refer to Figure 3 This diagram illustrates a second-view structural schematic of another solid-state battery 210 module according to an embodiment of this application; the solid-state battery 210 module includes:

[0051] Housing 100; Solid-state battery pack 200 located inside the housing 100;

[0052] A movable component 300 is located between the housing 100 and the solid-state battery pack 200; the movable component 300 abuts against the solid-state battery pack 200, and the abutment surface of the movable component 300 against the solid-state battery pack 200 is perpendicular to the thickness direction of the solid-state battery pack 200; the movable component 300 is used to apply pressure to the solid-state battery pack 200.

[0053] The controller component (not shown in the figure) is connected to the active component 300 and the solid-state battery pack 200. When the solid-state battery pack 200 is charging, the controller controls the active component 300 to move away from the solid-state battery pack 200 along the thickness direction. When the solid-state battery pack 200 is discharging, the controller controls the active component 300 to move closer to the solid-state battery pack 200 along the thickness direction.

[0054] In this embodiment, the solid-state battery 210 module may include a housing 100, a solid-state battery pack 200, a movable component 300, and a controller component. The housing 100 may consist of a base plate, side frames, a top cover, a front frame, and a rear frame. The base plate, side frames, top cover, front frame, and rear frame are interconnected to form a sealed space, and the solid-state battery pack 200 is located inside this sealed space. The solid-state battery pack 200 is formed by stacking multiple solid-state batteries 210 sequentially along the thickness direction. The thickness direction can be... Figure 2 The Y and X directions shown represent the height of the solid-state battery 210. For the solid-state battery pack 200, refer to the solid-state battery 210. Figure 4 and Figure 5 ,like Figure 4 As shown, the solid-state battery 210 in the solid-state battery pack 200 may include tabs 211, an outer insulating component 212, and an electrode assembly 213. For example... Figure 5 As shown, the solid-state battery 210 can also be along the following... Figure 3 Multiple rows are arranged in the X direction as shown to form a solid-state battery pack 200. The projected area of ​​the electrode assembly 213 on the movable assembly 300 is S.

[0055] The movable component 300 has the function of extending and retracting along the thickness direction of the solid-state battery pack 200. The movable component 300 is located between the housing 100 and the solid-state battery pack 200, and the solid-state battery pack 200 is installed through the space between the housing 100 and the movable component 300. The movable component 300 is connected to a controller assembly, which is also connected to the solid-state battery pack 200. The movable component 300 abuts against the solid-state battery pack 200, applying pressure to it. Under this pressure, the solid-solid interface inside the battery pack 200 remains under stable pressure, ensuring efficient and stable operation of the solid-state battery pack 200. The contact surface between the movable component 300 and the solid-state battery pack 200 is perpendicular to the thickness direction of the solid-state battery pack 200, meaning it can extend and retract along the thickness direction of the solid-state battery pack 200. Figure 2 and Figure 3 The XY plane refers to the plane where the contact surface between the movable component 300 and the solid-state battery pack 200 lies. Under the control of the controller assembly, the movable component 300 moves along the thickness direction of the solid-state battery pack 200. That is, the movable component 300 moves along... Figure 2 The diagram shows reciprocating motion in the Y direction. When the solid-state battery pack 200 is charging, it expands in the thickness direction. The controller assembly can control the movable component 300 to move away from the solid-state battery pack 200 in the Y direction, thus increasing the space occupied by the solid-state battery pack 200. Conversely, when the solid-state battery pack 200 is discharging, it contracts in the thickness direction. The controller assembly can control the movable component 300 to move closer to the solid-state battery pack 200 in the Y direction, thus reducing the space occupied by the solid-state battery pack 200. By adjusting and fixing the size of the space for installing the solid-state battery pack 200, the solid-state battery pack 200 can be stably and safely installed within the housing 100, ensuring integration and safety.

[0056] In an optional embodiment of this application, the active component 300 includes: an actuator 310 and an active plate 320;

[0057] One end of the actuator 310 is fixed to the housing 100, and the other end is connected to the movable plate 320 for driving the movable plate 320; the movable plate 320 abuts against the solid-state battery pack 200.

[0058] The movable component 300 may include an actuator 310 and a movable plate 320. The actuator 310 has a telescopic function and can move in a direction perpendicular to the contact surface, i.e., along the Y direction. One end of the actuator 310 is fixed to the housing 100, and the other end is connected to the movable plate 320, driving the movable plate 320 to move when the actuator 310 moves. There may be one or more actuators 310. When there are multiple actuators 310, they can be symmetrically distributed along the left and right center lines of the movable plate 320, ensuring uniform force distribution along the thickness direction of the battery pack. The movable plate 320 abuts against the solid-state battery pack 200, providing pressure to maintain the stability of the internal interface of the solid-state battery pack 200. Simultaneously, the movable plate 320 adjusts the installation space of the solid-state battery pack 200, increasing or decreasing the installation space accordingly during expansion or contraction.

[0059] In an optional embodiment of this application, the actuator 310 includes: an actuation structure symmetrical along the height direction of the solid-state battery pack 200, one end of the actuation structure being fixed to the housing 100 and the other end being connected to the movable plate 320 for driving the movable plate 320.

[0060] It is possible Figure 2 As shown, there can be two actuators 310, symmetrically arranged along the height direction of the solid-state battery pack 200, i.e., symmetrically arranged along the Y direction. One end of the actuator is fixed to the housing 100, and the other end is connected to the movable plate 320. The actuator moves along the Y direction, driving the movable plate 320 to move along the Y direction, so that the movable plate 320 and the housing 100 can jointly clamp the solid-state battery pack 200, ensuring the stability of the internal interface of each solid-state battery 210 in the solid-state battery pack 200.

[0061] In an optional embodiment of this application, the execution structure includes:

[0062] The fixed end 311 is fixedly connected to the housing 100;

[0063] The movable end 312 is fixedly connected to the movable plate 320;

[0064] The telescopic arm 313 is located between the fixed end 311 and the movable end 312, and is used to drive the movable end 312 to move the movable plate 320.

[0065] In this embodiment, the execution structure includes a fixed end 311, a movable end 312, and a telescopic arm 313. The fixed end 311 is fixedly connected to the housing 100. The fixed end 311 is fixed to the housing 100 in a fixed position. Specifically, the fixed end 311 can be fixed to the front frame or the rear frame of the housing 100. The movable end 312 is located on the housing 100 at the end opposite to the fixed end 311. That is, when the fixed end 311 is fixed to the front frame of the housing 100, the movable end 312 is located near the rear frame of the housing 100; when the fixed end 311 is fixed to the rear frame of the housing 100, the movable end 312 is located near the front frame of the housing 100. The movable end 312 is fixedly connected to the movable plate 320. The telescopic arm 313 is located between the fixed end 311 and the movable end 312, with one end of the telescopic arm 313 connected to the fixed end 311 and the other end connected to the movable end 312. When the telescopic arm 313 extends or retracts, it causes the movable end 312 to move relative to the fixed end 311 in the Y direction. The movement of the movable end 312 causes the movable plate 320 to move in the Y direction, thereby adjusting the installation space size of the solid-state battery pack 200.

[0066] In an optional embodiment of this application, the length of the movable plate 320 along the height direction of the solid-state battery pack 200 is greater than the height of the solid-state battery pack 200, and the housing 100, the telescopic arm 313 and the movable plate 320 enclose the solid-state battery pack 200.

[0067] In this embodiment, the length of the movable plate 320 in the height direction of the solid-state battery pack 200, i.e., in the X direction, is greater than the height of the solid-state battery pack 200. When multiple solid-state batteries 210 are stacked in the height direction of the solid-state batteries 210, i.e., in the X direction, the length of the movable plate 320 is greater than the height of all the solid-state batteries 210. For example, when there are two solid-state batteries 210 in the height direction of the solid-state batteries 210, the length of the movable plate 320 is greater than twice the height of the solid-state batteries 210. That is, when N solid-state batteries 210 are stacked in the height direction of the solid-state batteries 210, the length of the movable plate 320 is greater than N times the height of the solid-state batteries 210. The length of the movable plate 320 is greater than the height of the solid-state battery pack 200, so that pressure can be provided to all the solid-state batteries 210 in the solid-state battery pack 200 through one movable plate 320, keeping the internal interface of the solid-state batteries 210 stable and achieving the corresponding power supply efficiency. At this time, it can be referred to Figure 2 The housing 100, telescopic arm 313, and movable plate 320 enclose the solid-state battery pack 200, providing installation space for the solid-state battery pack 200. When the solid-state battery pack 200 expands or contracts, the extension and retraction of the telescopic arm 313 causes the movable plate 320 to move, thereby adjusting the size of the installation space.

[0068] Furthermore, to ensure that the housing 100 and the movable plate 320 can withstand the pressure of the solid-state battery pack 200 during operation, the housing 100 and the movable plate 320 can be made of high-strength materials. The strength of the housing 100 and the movable plate 320 needs to be higher than the pressure corresponding to the solid-state battery pack 200 during operation, thereby ensuring the service life of the solid-state battery module 210. The housing 100 and the movable plate 320 can be made of the same material or different materials. The materials of the housing 100 and the movable plate 320 include, but are not limited to, high-strength steel, aluminum alloy, or composite materials. Composite materials include carbon fiber reinforced composite materials, glass fiber reinforced composite materials, aramid fiber reinforced composite materials, metal matrix composite materials, and ceramic matrix composite materials, etc.

[0069] In an optional embodiment of this application, a gap is provided between the movable plate 320 and the housing 100.

[0070] You can refer to Figure 3 As shown, a gap is provided between the movable plate 320 and the housing 100. Maintaining a certain gap ensures that the movable plate 320 will not rub against the housing 100 during its reciprocating motion, thus preventing wear and tear and ensuring the service life of the solid-state battery 210 module. The size of this gap can be set according to actual needs, and this embodiment does not impose a specific limitation. It should be noted that the gap exists even when the movable plate 320 is in a position that maximizes the installation space for the solid-state battery pack 200; that is, even when the movable plate 320 is in a position that maximizes the installation space for the solid-state battery pack 200, a gap is still maintained between it and the housing 100.

[0071] In an optional embodiment of this application, the travel distance of the active component 300 is greater than the difference in thickness due to expansion and contraction of the solid-state battery pack 200 over its lifetime.

[0072] In this embodiment, the travel distance of the movable component 300 is greater than the difference in thickness due to expansion and contraction of the solid-state battery pack 200 over its lifespan. This ensures that the travel distance of the movable component 300 allows for adjustment of the installation space of the solid-state battery pack 200 throughout its lifespan, guaranteeing practicality and reducing the occurrence of malfunctions. (Refer to...) Figure 6 and Figure 2The travel distance of the active component 300 is H0. The maximum dimension of the solid-state battery pack 200 after expansion in the thickness direction (Y-direction) over its entire life cycle is H1, and the minimum dimension after contraction is H2. The difference between the expansion and contraction thickness dimensions of the solid-state battery pack 200 over its life cycle is (H1-H2), and H0 > (H1-H2). The maximum dimension H1 and the minimum dimension H2 of the solid-state battery pack 200 after expansion in the thickness direction over its entire life cycle can be determined through prior durability testing. By obtaining the maximum dimension H1 and the minimum dimension H2 of the solid-state battery pack 200 after expansion in the thickness direction over its entire life cycle through relevant experimental data, the travel distance H0 of the active component 300 can be determined.

[0073] In an optional embodiment of this application, the workload of the active component 300 is greater than the pressure exerted on the active component 300 by the solid-state battery pack 200.

[0074] The workload of the movable component 300, i.e., the load capacity that the movable component 300 can withstand during movement, needs to be greater than the pressure exerted on the movable component 300 by the solid-state battery pack 200 to ensure that the movable component 300 will not deform due to pressure during operation, thus guaranteeing operational reliability. This can be combined with... Figure 4 As shown, the projected area of ​​a single solid-state battery 210 in the solid-state battery pack 200 is S, the number of solid-state batteries 210 arranged along the height of the solid-state battery pack 200 is n, the maximum working pressure of the solid-state battery 210 is Pmax, the maximum expansion force of the solid-state battery pack 200 is Fmax, the number of actuators 3103 is m, and the maximum working pressure of a single actuator 310 is F0. Then Fmax = nSPmax, mF0 > Fmax.

[0075] In an optional embodiment of this application, the solid-state battery pack 200 corresponds to a thickness mapping curve, and the controller assembly is used to drive the active plate 320 based on the thickness mapping curve.

[0076] The thickness mapping curve is a curve mapping the thickness of the solid-state battery pack 200 to pressure and / or state of charge (SOC), meaning the corresponding thickness can be determined based on pressure and / or SOC. The thickness mapping curve can be established through prior experiments. If the thickness of the battery pack is defined as H, the SOC of the solid-state battery 210 as c, and the pressure as f, then the mapping curve is a function of H with respect to c and f. When the solid-state battery 210 is charging and discharging, c and f change, and the controller component calculates and executes the expansion and contraction action based on the thickness mapping curve. For example, the process of establishing the thickness mapping curve is as follows:

[0077] Experimental Preparation: Prepare multiple solid-state battery 210 samples of the same specifications but different states of charge. These samples can be obtained by charging or discharging to a specific state of charge. Ensure that all samples are tested under the same environmental conditions (such as temperature and humidity) to reduce the influence of external factors on the experimental results.

[0078] Thickness Measurement: High-precision thickness measurement equipment (such as a micrometer or laser thickness gauge) is used to measure the thickness of each battery sample. The state of charge and corresponding thickness value of each sample are recorded. Pressure Measurement: Pressure sensors are used to record the pressure and corresponding thickness value of each sample.

[0079] Data processing and analysis: The measured state of charge and thickness values ​​are compiled into a data table. A mapping curve is plotted using data analysis software (such as Excel, MATLAB, etc.). This curve visually illustrates the relationship between the state of charge, post-pressure, and battery thickness.

[0080] Curve validation and optimization: The accuracy and reliability of the mapping curve are verified through repeated experiments. If deviations or inconsistencies are found in the curve, the experimental procedures, measuring equipment, or data processing methods need to be re-examined, and necessary adjustments and optimizations made.

[0081] During the operation of the solid-state battery pack 200, the actuator 310 can acquire the state of charge and / or pressure of the solid-state battery pack 200, and based on the thickness mapping curve, find the thickness corresponding to that state of charge and / or pressure. This allows the actuator to determine the required length in the thickness direction of the solid-state battery pack 200, and drive the movable plate 320 to move based on the difference between the current and required length. The process of determining the corresponding thickness based on the state of charge and / or pressure can be as follows:

[0082] State of charge acquisition: The current state of charge of the solid-state battery 210 is acquired in real time through the battery management system (BMS) or other measurement methods. Pressure acquisition: The pressure on the solid-state battery pack 200 is detected by a pressure sensor.

[0083] Thickness lookup: Using the established mapping curve, the corresponding battery thickness can be retrieved based on the current state of charge and / or pressure. The mapping curve is given in function form, and the state of charge and / or pressure values ​​can be directly substituted into the function for calculation to obtain the corresponding thickness value.

[0084] To enable those skilled in the art to clearly understand the embodiments of this application, the control process of actuator 310 is illustrated by example:

[0085] The controller component can control the solid-state battery 210 within the solid-state battery pack 200 by controlling its expansion pressure. The steady-state operating pressure of the solid-state battery 210 is defined as P0, Pmax as the maximum operating pressure, and Pmin as the minimum operating pressure, where Pmin ≤ P0 ≤ Pmax. When the solid-state battery pack 200 is charging, its real-time pressure P1 increases. When P1 > Pmax, the controller component can control the telescopic arm 313 in the actuator 310 to extend, i.e., as shown... Figure 2 In the Y direction, the movement upwards causes the movable plate 320 to move upwards, making Pmin ≤ P1 ≤ Pmax. When the solid-state battery pack 200 is discharging, it contracts in the thickness direction, thus reducing the pressure P1 exerted by the solid-state battery pack 200 on the movable plate 320. When P1 < Pmin, the controller assembly can control the telescopic arm 313 in the actuator 310 to perform a contraction action, i.e., as shown... Figure 2 In the Y direction shown, it moves downwards, causing the movable plate 320 to move downwards, so that Pmin≤P1≤Pmax.

[0086] This application embodiment also provides a power system, including the solid-state battery 210 module as described above.

[0087] The power system can provide electrical energy to vehicles and other mechanical equipment. The power system includes solid-state battery modules 210, which are used to store or release battery power. The solid-state battery modules 210 supply power to the power-consuming components, ensuring the operation of the equipment. In addition, the power system can also include power supply modules with different voltage levels than the solid-state battery modules 210, such as batteries. These batteries can be used to power low-voltage devices such as sensors and processors, while the solid-state battery modules 210 can power high-voltage devices such as actuators 310. By using different power supply components to form the power system, the control process of the power system can be simplified.

[0088] Specifically, the solid-state battery 210 module includes:

[0089] Housing 100; Solid-state battery pack 200 located inside the housing 100;

[0090] A movable component 300 is located between the housing 100 and the solid-state battery pack 200; the movable component 300 abuts against the solid-state battery pack 200, and the abutment surface of the movable component 300 against the solid-state battery pack 200 is perpendicular to the thickness direction of the solid-state battery pack 200; the movable component 300 is used to apply pressure to the solid-state battery pack 200.

[0091] The controller assembly is connected to the active component 300 and the solid-state battery pack 200. When the solid-state battery pack 200 is charging, the controller assembly controls the active component 300 to move away from the solid-state battery pack 200 along the thickness direction. When the solid-state battery pack 200 is discharging, the controller assembly controls the active component 300 to move closer to the solid-state battery pack 200 along the thickness direction.

[0092] Optionally, the active component 300 includes: an actuator 310 and an active plate 320;

[0093] One end of the actuator 310 is fixed to the housing 100, and the other end is connected to the movable plate 320 for driving the movable plate 320; the movable plate 320 abuts against the solid-state battery pack 200.

[0094] Optionally, the actuator 310 includes an actuation structure symmetrical along the height direction of the solid-state battery pack 200, one end of which is fixed to the housing 100 and the other end is connected to the movable plate 320 for driving the movable plate 320.

[0095] Optionally, the length of the movable plate 320 along the height direction of the solid-state battery pack 200 is greater than the height of the solid-state battery pack 200.

[0096] Optionally, the execution structure includes:

[0097] The fixed end 311 is fixedly connected to the housing 100;

[0098] The movable end 312 is fixedly connected to the movable plate 320;

[0099] The telescopic arm 313 is located between the fixed end 311 and the movable end 312, and is used to drive the movable end 312 to move the movable plate 320.

[0100] Optionally,

[0101] The housing 100, the telescopic arm 313, and the movable plate 320 enclose the solid-state battery pack 200.

[0102] Optionally, the travel distance of the active component 300 is greater than the difference in thickness due to expansion and contraction of the solid-state battery pack 200 over its lifespan; and / or,

[0103] The workload of the active component 300 is greater than the pressure exerted on the active component 300 by the solid-state battery pack 200.

[0104] Optionally, the solid-state battery pack 200 has a thickness mapping curve, and the actuator 310 is used to drive the active plate 320 based on the thickness mapping curve.

[0105] Optionally, a gap is provided between the movable plate 320 and the housing 100.

[0106] Optionally, it also includes:

[0107] An electrical connection assembly 400 is connected to a solid-state battery 210 in the solid-state battery pack 200, and is used to connect the solid-state batteries 210 in the solid-state battery pack 200 in series or in parallel.

[0108] Optionally, it also includes:

[0109] The signal acquisition component 500 is connected to the solid-state battery 210 in the solid-state battery pack 200, and is used to acquire the battery status of the solid-state battery 210 in the solid-state battery pack 200 and transmit it to the active component 300.

[0110] A movable component 300 is located between the housing 100 and the solid-state battery pack 200. The movable component 300 abuts against the solid-state battery pack 200, and the abutment surface of the movable component 300 against the solid-state battery pack 200 is perpendicular to the thickness direction of the solid-state battery pack 200. The movable component 300 is used to apply pressure to the solid-state battery pack 200. When the solid-state battery pack 200 is charging, the controller component controls the movable component 300 to move away from the solid-state battery pack 200 along the thickness direction. When the solid-state battery pack 200 is discharging, the controller component controls the movable component 300 to move closer to the solid-state battery pack 200 along the thickness direction. When the solid-state battery pack 200 undergoes volume changes such as expansion or contraction, the controller component can control the movable component 300 to adapt to the corresponding changes, moving closer to or away from the solid-state battery pack 200 along the thickness direction of the solid-state battery pack 200, adjusting and fixing the space for installing the solid-state battery pack 200, so that the solid-state battery pack 200 can be stably and safely installed in the housing 100. Furthermore, the movable component 300 abuts against the solid-state battery pack 200, applying pressure to the solid-state battery pack 200 through the movable component 300. This provides continuous pressure to the solid-state battery pack 200, ensuring the stability of the internal interface of each solid-state battery in the solid-state battery pack 200 even if the solid-state battery pack 200 undergoes volume changes such as expansion or contraction. This improves the lifespan and safety of the solid-state battery pack 200.

[0111] This application also discloses a vehicle including the power system described above.

[0112] The vehicle utilizes electrical energy from its power system to drive its movement and perform corresponding onboard functions. The power system may include the solid-state battery 210 module as described above. During charging, the solid-state battery 210 module converts external electrical energy into chemical energy for storage; during discharging, it converts the chemical energy back into electrical energy to power the drive motor, thereby driving the vehicle. Furthermore, the energy system may also include low-voltage power supplies such as batteries, which serve as a low-voltage electrical system to support vehicle control, instrument displays, lighting, and other functions. The batteries provide a stable 12V or 24V power supply to these low-voltage devices, ensuring the normal operation of the vehicle's electronic systems. Moreover, when the solid-state battery 210 module malfunctions or its charge is insufficient, the batteries can serve as a backup power source, providing power support for emergency vehicle operations (such as flashing lights, door unlocking, etc.), ensuring the vehicle's basic safety functions.

[0113] Specifically, the solid-state battery 210 module includes:

[0114] Housing 100; Solid-state battery pack 200 located inside the housing 100;

[0115] A movable component 300 is located between the housing 100 and the solid-state battery pack 200; the movable component 300 abuts against the solid-state battery pack 200, and the abutment surface of the movable component 300 against the solid-state battery pack 200 is perpendicular to the thickness direction of the solid-state battery pack 200; the movable component 300 is used to apply pressure to the solid-state battery pack 200.

[0116] The controller assembly is connected to the active component 300 and the solid-state battery pack 200. When the solid-state battery pack 200 is charging, the controller assembly controls the active component 300 to move away from the solid-state battery pack 200 along the thickness direction. When the solid-state battery pack 200 is discharging, the controller assembly controls the active component 300 to move closer to the solid-state battery pack 200 along the thickness direction.

[0117] Optionally, the active component 300 includes: an actuator 310 and an active plate 320;

[0118] One end of the actuator 310 is fixed to the housing 100, and the other end is connected to the movable plate 320 for driving the movable plate 320; the movable plate 320 abuts against the solid-state battery pack 200.

[0119] Optionally, the actuator 310 includes an actuation structure symmetrical along the height direction of the solid-state battery pack 200, one end of which is fixed to the housing 100 and the other end is connected to the movable plate 320 for driving the movable plate 320.

[0120] Optionally, the length of the movable plate 320 along the height direction of the solid-state battery pack 200 is greater than the height of the solid-state battery pack 200.

[0121] Optionally, the execution structure includes:

[0122] The fixed end 311 is fixedly connected to the housing 100;

[0123] The movable end 312 is fixedly connected to the movable plate 320;

[0124] The telescopic arm 313 is located between the fixed end 311 and the movable end 312, and is used to drive the movable end 312 to move the movable plate 320.

[0125] Optionally,

[0126] The housing 100, the telescopic arm 313, and the movable plate 320 enclose the solid-state battery pack 200.

[0127] Optionally, the travel distance of the active component 300 is greater than the difference in thickness due to expansion and contraction of the solid-state battery pack 200 over its lifespan; and / or,

[0128] The workload of the active component 300 is greater than the pressure exerted on the active component 300 by the solid-state battery pack 200.

[0129] Optionally, the solid-state battery pack 200 has a thickness mapping curve, and the actuator 310 is used to drive the active plate 320 based on the thickness mapping curve.

[0130] Optionally, a gap is provided between the movable plate 320 and the housing 100.

[0131] Optionally, it also includes:

[0132] An electrical connection assembly 400 is connected to a solid-state battery 210 in the solid-state battery pack 200, and is used to connect the solid-state batteries 210 in the solid-state battery pack 200 in series or in parallel.

[0133] Optionally, it also includes:

[0134] The signal acquisition component 500 is connected to the solid-state battery 210 in the solid-state battery pack 200, and is used to acquire the battery status of the solid-state battery 210 in the solid-state battery pack 200 and transmit it to the active component 300.

[0135] A movable component 300 is located between the housing 100 and the solid-state battery pack 200. The movable component 300 abuts against the solid-state battery pack 200, and the abutment surface of the movable component 300 against the solid-state battery pack 200 is perpendicular to the thickness direction of the solid-state battery pack 200. The movable component 300 is used to apply pressure to the solid-state battery pack 200. When the solid-state battery pack 200 is charging, the controller component controls the movable component 300 to move away from the solid-state battery pack 200 along the thickness direction. When the solid-state battery pack 200 is discharging, the controller component controls the movable component 300 to move closer to the solid-state battery pack 200 along the thickness direction. When the solid-state battery pack 200 undergoes volume changes such as expansion or contraction, the controller component can control the movable component 300 to adapt to the corresponding changes, moving closer to or away from the solid-state battery pack 200 along the thickness direction of the solid-state battery pack 200, adjusting and fixing the space for installing the solid-state battery pack 200, so that the solid-state battery pack 200 can be stably and safely installed in the housing 100. Furthermore, the movable component 300 abuts against the solid-state battery pack 200, applying pressure to the solid-state battery pack 200 through the movable component 300. This provides continuous pressure to the solid-state battery pack 200, ensuring the stability of the internal interface of each solid-state battery in the solid-state battery pack 200 even if the solid-state battery pack 200 undergoes volume changes such as expansion or contraction. This improves the lifespan and safety of the solid-state battery pack 200.

[0136] The above embodiments are merely preferred embodiments provided to fully illustrate this application, and the scope of protection of this application is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on this application are all within the scope of protection of this application.

[0137] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0138] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number or order of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. Furthermore, the terms "comprising," "including," and "having," and any variations thereof, are intended to cover non-exclusive inclusion. As used in this application, the term "and / or" includes any and all combinations of one or more of the associated listed items, and the phrase "at least one of A and B" means only A, only B, or both A and B. It should be understood that in this specification, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "height," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship or dimensions based on the orientation or positional relationship or dimensions shown in the accompanying drawings. These terms are used only for ease of description and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this disclosure.

[0139] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.

[0140] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0141] The solid-state battery module, power system, and vehicle provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A solid-state battery module, characterized in that, include: case; Solid-state battery pack located inside the housing; A movable component is located between the housing and the solid-state battery pack; the movable component abuts against the solid-state battery pack, and the abutment surface of the movable component against the solid-state battery pack is perpendicular to the thickness direction of the solid-state battery pack; the movable component is used to apply pressure to the solid-state battery pack. A controller assembly, connected to the active component and the solid-state battery pack, is used to control the active component to move away from the solid-state battery pack along the thickness direction when the solid-state battery pack is charging, and to control the active component to move closer to the solid-state battery pack along the thickness direction when the solid-state battery pack is discharging.

2. The solid-state battery module according to claim 1, characterized in that, The active components include: an actuator and an active plate; One end of the actuator is fixed to the housing, and the other end is connected to the movable plate for driving the movable plate; the movable plate abuts against the solid-state battery pack.

3. The solid-state battery module according to claim 2, characterized in that, The actuator includes an actuation structure symmetrical along the height direction of the solid-state battery pack. One end of the actuation structure is fixed to the housing, and the other end is connected to the movable plate for driving the movable plate.

4. The solid-state battery module according to claim 3, characterized in that, The length of the movable plate along the height direction of the solid-state battery pack is greater than the height of the solid-state battery pack.

5. The solid-state battery module according to claim 3, characterized in that, The execution structure includes: The fixed end is fixedly connected to the housing; The movable end is fixedly connected to the movable plate; A telescopic arm, located between the fixed end and the movable end, is used to drive the movable end to move the movable plate.

6. The solid-state battery module according to claim 3, characterized in that, The housing, the telescopic arm, and the movable plate enclose the solid-state battery pack.

7. The solid-state battery module according to claim 1, characterized in that, The travel distance of the active component is greater than the difference in thickness due to expansion and contraction of the solid-state battery pack over its lifetime; and / or, The workload of the active component is greater than the pressure exerted on the active component by the solid-state battery pack.

8. The solid-state battery module according to claim 2, characterized in that, A gap is provided between the movable plate and the housing.

9. The solid-state battery module according to claim 1, characterized in that, Also includes: An electrical connection assembly is connected to the solid-state batteries in the solid-state battery pack, for connecting the solid-state batteries in the solid-state battery pack in series or in parallel.

10. The solid-state battery module according to claim 1, characterized in that, Also includes: A signal acquisition component is connected to the solid-state battery in the solid-state battery pack and is used to acquire the battery status of the solid-state battery in the solid-state battery pack and transmit it to the controller component.

11. A power supply system, characterized in that, Including the solid-state battery module as described in any one of claims 1-10.

12. A vehicle, characterized in that, Including the power supply system as described in claim 11.

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