A pressurizing device, a solid-state battery, a pressurizing method, and a terminal

Abstract

The embodiment of the application provides a kind of pressurizing device, solid-state battery, pressurizing method and terminal.The pressurizing device includes driving piece, the driving piece is connected with the box of solid-state battery;And force amplification component, the force amplification component is movably connected with the box, and is connected with the driving piece, the force amplification component is used to be connected with the solid-state battery module of solid-state battery.The pressurizing device provided in the embodiment of the application can apply sufficient pressure to solid-state battery, meet the high pressure pressurizing demand of solid-state battery, to improve the conductivity and cycle performance of solid-state battery, so that solid-state battery can be mass-produced application.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a pressurization device, a solid-state battery, a pressurization method, and a terminal. Background Technology

[0002] Solid-state batteries possess advantages such as high energy density, strong safety, and long cycle life, making them a core development direction for next-generation power batteries. The surface of solid-state batteries typically requires high pressure to improve their conductivity and cycle performance.

[0003] However, existing pressurization methods are insufficient to meet the high-voltage requirements of solid-state batteries, reducing their conductivity and cycle performance, which in turn affects their mass production and application. Summary of the Invention

[0004] This application aims to provide a pressurization device, a solid-state battery, a pressurization method, and a terminal to solve the problem that existing pressurization methods are unable to meet the high-voltage pressurization requirements of solid-state batteries, thereby reducing the conductivity and cycle performance of solid-state batteries and affecting their mass production and application.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows: In a first aspect, this application discloses a pressurizing device, the pressurizing device comprising: A driving component, which is connected to the housing of the solid-state battery; And a force amplification component, which is movably connected to the housing and to the drive component, and is used to connect to the solid-state battery module of the solid-state battery.

[0006] Optionally, the force amplification assembly includes a multi-stage amplification assembly and a pressure application element; The pressure-applying component is connected to the multi-stage amplification assembly, and the pressure-applying component is used to connect to the solid-state battery module; The multi-stage amplification component is located between the pressure-applying component and the fixing component. The multi-stage amplification component is movably connected to the housing and connected to the driving component.

[0007] Optionally, the multi-stage amplification assembly includes a primary linkage group and a secondary linkage group movably connected to the primary linkage group; The first-stage linkage is connected to the drive component, the second-stage linkage is movably connected to the housing, and the second-stage linkage is connected to the pressure-applying component.

[0008] Optionally, the first-level linkage group includes a first link and a second link rotatably connected to the first link, and the second-level linkage group includes a third link and a fourth link rotatably connected to the third link; The first connecting rod is connected to the driving component, the second connecting rod is rotatably connected to the third connecting rod, the third connecting rod is rotatably connected to the pressure applying component, and the fourth connecting rod is rotatably connected to the housing.

[0009] Optionally, the driving component is a rotary driving component, and the force amplification assembly further includes a lead screw assembly, which is connected between the driving component and the multi-stage amplification assembly.

[0010] Optionally, the lead screw assembly includes a threaded sleeve and a lead screw; The threaded sleeve is connected to the multi-stage amplification assembly; The lead screw is connected to the drive component, and the lead screw passes through the threaded sleeve and is threadedly engaged with the threaded sleeve.

[0011] Optionally, the pressurizing device further includes a guide structure located between the housing and the pressure-applying component, and the guide structure is fixedly connected to the housing; The pressure-applying component is movably connected to the guide structure.

[0012] Optionally, the guide structure includes a plurality of guide posts, which are spaced apart between the fixing member and the pressure applying member. The guide posts are connected to the housing, and the pressure applying member is slidably connected to the guide posts.

[0013] Optionally, the pressurizing device further includes a detection unit connected to the housing and / or the pressure-applying component.

[0014] Optionally, the pressurizing device further includes a fixing member connected to the housing; The driving component is connected to the fixing component; The force amplification component is movably connected to the fixing component.

[0015] Secondly, this application also provides a solid-state battery, which includes a pressurizing device, a housing, and a solid-state battery module as described in any of the above claims; the housing has a receiving cavity, the solid-state battery module is disposed in the receiving cavity, and the solid-state battery module is enclosed with the cavity wall of the receiving cavity to form an installation space; The pressurizing device is disposed within the installation space, and the driving component of the pressurizing device is connected to the housing, and the force amplification component of the pressurizing device is connected to the solid-state battery module.

[0016] Optionally, the solid-state battery module is provided in multiple groups, and the pressurizing device is provided in multiple groups. The multiple groups of solid-state battery modules are arranged in the receiving cavity, and each group of solid-state battery modules is provided with one pressurizing device.

[0017] Optionally, the solid-state battery further includes a controller electrically connected to the drive component of the pressurizing device. The controller is used to control the drive component to provide a driving force adapted to the target pressure requirement of the solid-state battery module.

[0018] Thirdly, this application also provides a pressurization method, the pressurization method comprising: The control drive provides driving force to the force amplification component, thereby driving the force amplification component to move; The force amplification component amplifies the driving force provided by the driving component and applies it to the solid-state battery module.

[0019] Optionally, the control actuator is activated to provide driving force to the force amplification assembly, the movement of which includes: Obtain the target pressure requirement of the solid-state battery module; Based on the target pressure requirement, the drive unit is controlled to provide a driving force to the force amplification assembly that meets the target pressure requirement.

[0020] Optionally, if the pressurizing device further includes a detection unit, the control drive is activated to provide driving force to the force amplification assembly, the movement of which includes: Obtain the pressure detected by the detection unit; The driving force provided by the drive component is controlled based on the detected pressure.

[0021] Fourthly, this application also provides a terminal, the terminal comprising: a pressurizing device as described in any of the preceding claims or a solid-state battery as described in any of the preceding claims, or the terminal using a pressurizing method as described in any of the preceding claims.

[0022] In this embodiment, the pressurizing device includes a fixing component, a driving component, and a force amplification component. The driving component is connected to the fixing component, and the force amplification component is movably connected to the fixing component and connected to the driving component. The output end of the force amplification component is used to connect to the solid-state battery module. The driving component provides driving force to the force amplification component, thereby driving the force amplification component to move. The driving force provided by the driving component can be amplified by the force amplification component and applied to the solid-state battery module. In this way, sufficient pressure can be applied to the solid-state battery to meet the high-voltage pressurization requirements of the solid-state battery, thereby improving the conductivity and cycle performance of the solid-state battery, enabling the solid-state battery to be mass-produced and applied.

[0023] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of a pressurizing device provided in an embodiment of this application; Figure 2 This is a schematic diagram of a pressurizing device in its initial position according to an embodiment of this application; Figure 3 This is a schematic diagram of a pressurizing device in the middle position according to an embodiment of this application; Figure 4 This is a schematic diagram of a pressurizing device in its extreme position according to an embodiment of this application; Figure 5 This is a top view of a pressurization device provided in an embodiment of this application; Figure 6 This is a displacement curve diagram of the first connecting rod and the pressure applying component of a pressurizing device provided in an embodiment of this application; Figure 7 This is a graph showing the linkage angle and pressure multiplication ratio of a pressurizing device provided in an embodiment of this application; Figure 8 This is a schematic diagram of another pressurizing device provided in an embodiment of this application; Figure 9 This is a schematic diagram of the structure of a solid-state battery provided in an embodiment of this application; Figure 10 This is a partial structural schematic diagram of a solid-state battery provided in an embodiment of this application; Figure 11 This is a partially enlarged structural diagram of a solid-state battery provided in an embodiment of this application; Figure 12 This is a block diagram illustrating a pressurization method provided in an embodiment of this application.

[0025] Reference numerals: 100-Solid-state battery; 1-Pressure device; 11-Fixing component; 12-Drive component; 13-Force amplification assembly; 131-Multi-stage amplification assembly; 1311-First-stage linkage group; 13111-First linkage; 13112-Second linkage; 1312-Second-stage linkage group; 13121-Third linkage; 13122-Fourth linkage; 132-Pressure application component; 133-Lead screw assembly; 1331-Lead screw; 1332-Threaded sleeve; 1333-Support component; 14-Base; 15-Guide structure; 151-Guide column; 16-Reducer; 17-Coupling; 2-Housing; 21-Receiving cavity; 3-Solid-state battery module; 31-Cell array; 311-Solid-state cell; 312-Heat insulation component; 32-End plate; 4-Installation space; 5-Electrical components. Detailed Implementation

[0026] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0027] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0028] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] Solid-state batteries possess advantages such as high energy density, strong safety, and long cycle life, making them a core development direction for next-generation power batteries. The surface of solid-state batteries typically requires high pressure to improve their conductivity and cycle performance. Generally, solid-state batteries require pressure in the MPa range on their surface to achieve high conductivity and cycle performance.

[0031] Taking traditional liquid batteries as an example, the typical pressure required for cell assembly is only about 0.1 MPa, and in most operating conditions, no additional pressurization is needed. In contrast, the typical pressure required for solid-state battery cell assembly can reach 20 MPa, a pressure difference of approximately 200 times. Existing conventional battery pressurization and packaging methods are only suitable for low-pressure assembly conditions and cannot meet the high-pressure requirements of solid-state batteries. This reduces the conductivity and cycle performance of solid-state batteries, thus affecting their mass production and application.

[0032] Based on the above analysis, this application provides a pressurizing device that can be applied to a solid-state battery 100 to at least solve the aforementioned problems. The pressurizing device of this application will now be described in detail with reference to the accompanying drawings.

[0033] Example 1 Reference Figures 1-8 This illustrates a pressurizing device 1 provided in an embodiment of this application, such as... Figures 1-8 As shown, the pressurizing device 1 may specifically include a driving component 12, a fixing component 11 for connecting to the housing 2 of the solid-state battery 100; the driving component 12 is connected to the housing 2 of the solid-state battery 100; and a force amplification component 13, which is movably connected to the housing 2 and connected to the driving component 12, and is used to connect to the solid-state battery module 3 of the solid-state battery 100; wherein, the driving component 12 is used to provide driving force to the force amplification component 13 to drive the force amplification component 13 to move, and the force amplification component 13 is used to amplify the driving force provided by the driving component 12 and apply it to the solid-state battery module 3.

[0034] Specifically, the drive component 12 can be directly or indirectly connected to the inner wall of the housing 2. Direct connection means the drive component 12 is directly and fixedly connected to the inner wall of the housing 2; indirect connection means... Figure 1 As shown, the driving component is indirectly connected to the inner wall of the housing 2 through the fixing component 11 described in the subsequent embodiment. The fixing component 11 is fixedly connected to the inner wall of the housing 2, and the driving component 12 is fixedly connected to the fixing component 11.

[0035] Similarly, the force amplification component 13 can also be directly or indirectly connected to the inner wall of the housing 2. Direct connection means the force amplification component 13 is directly and movably connected to the inner wall of the housing 2, while indirect connection means... Figure 1 As shown, the force amplification component 13 is indirectly and movably connected to the inner wall of the housing 2 via the fixing member 11 described in a subsequent embodiment. The fixing member 11 is fixedly connected to the inner wall of the housing 2, and the force amplification component 13 is movably connected to the fixing member 11. The housing 2 can provide support for the driving member 12 and the force amplification component 13.

[0036] The drive unit 12 serves as a power source to provide driving force. The driving force provided by the drive unit 12 can be input to the force amplification component 13 through linear drive, rotary drive, or other means. The drive unit 12 can be a servo motor, stepper motor, DC motor, AC motor, servo motor, hydraulic cylinder, pneumatic cylinder, mechanical, manual, or other components.

[0037] like Figure 2 As shown, the output end of the driving component 12 is connected to the force amplification component 13, and the output end of the force amplification component 13 is connected to the end plate 32 of the solid-state battery module 3. The force amplification component 13 can move under the driving force of the driving component 12. The mechanical structure of the force amplification component 13 increases the driving force and applies the amplified pressure to the solid-state battery module 3, thereby providing a sufficiently large pressurization pressure to the solid-state battery module 3 to meet the high-voltage operating conditions required by the solid-state battery 100.

[0038] The power of the drive unit 12 can be 0.1kw-5kw, and the pressurizing device 1 can achieve a pressurization pressure of 1-20MPa for the solid-state battery 100.

[0039] In this embodiment, the pressurizing device 1 includes a fixing member 11, a driving member 12, and a force amplification component 13. The driving member 12 is connected to the fixing member 11, and the force amplification component 13 is movably connected to the fixing member 11 and connected to the driving member 12. The output end of the force amplification component 13 is used to connect to the solid-state battery module 3. The driving member 12 provides driving force to the force amplification component 13, thereby driving the force amplification component 13 to move. The driving force provided by the driving member 12 can be amplified by the force amplification component 13 and applied to the solid-state battery module 3. In this way, sufficient pressure can be applied to the solid-state battery 100 to meet the high-voltage pressurization requirements of the solid-state battery 100, thereby improving the conductivity and cycle performance of the solid-state battery 100, so that the solid-state battery 100 can be mass-produced and applied.

[0040] Example 2 Optionally, the force amplification assembly 13 includes a multi-stage amplification assembly 131 and a pressure-applying component 132; the pressure-applying component 132 is connected to the multi-stage amplification assembly 131 and is used to connect to the solid-state battery module 3; the multi-stage amplification assembly 131 is located between the pressure-applying component 132 and the housing 2, the multi-stage amplification assembly 131 is movably connected to the housing 2 and connected to the driving component 12; the driving component 12 is used to provide driving force to the multi-stage force amplification assembly 13 to drive the multi-stage amplification assembly 131 to move, and the multi-stage amplification assembly 131 is used to amplify the driving force provided by the driving component 12 in multiple stages and apply it to the solid-state battery module 3 through the pressure-applying component 132.

[0041] Specifically, the multi-stage amplification component 131 refers to a transmission amplification component capable of amplifying the input driving force in multiple stages and increasing the output force, thus transforming a smaller force into a larger one. Examples include multi-stage linkage mechanisms, multi-stage cam mechanisms, and other transmission structures.

[0042] The multi-stage amplification component 131 can be directly or indirectly connected to the inner wall of the housing 2. Direct connection means the multi-stage amplification component 131 is directly and movably connected to the inner wall of the housing 2; indirect connection means... Figure 1 As shown, the multi-stage amplification component 131 is indirectly and movably connected to the inner wall of the housing 2 through the fixing member 11 described in the subsequent embodiments. The fixing member 11 is fixedly connected to the inner wall of the housing 2, and the multi-stage amplification component 131 is movably connected to the fixing member 11.

[0043] like Figure 1 and Figure 2 As shown, the multi-stage amplification component 131 is connected to the output terminal of the drive component 12. The multi-stage amplification component 131 amplifies the relatively small driving force provided by the drive component 12 into a sufficiently large output pressure, which is then transmitted to the pressure applying component 132. The pressure applying component 132 displaces, thus transmitting the pressure to the solid-state battery module 3. In practical applications, the pressure displacement of the pressure applying component 132 can be 1-100 mm.

[0044] like Figure 2 and Figure 1 As shown, the pressure-applying component 132 can adopt a pressure plate structure. One side surface of the pressure-applying component 132 is connected to the output end of the multi-stage amplification component 131, and the other side surface is attached to the end plate 32 of the solid-state battery module 3, which can transmit the pressure output by the multi-stage amplification component 131 to the entire solid-state battery module 3. Of course, the pressure-applying component 132 can also be a rigid structure with other adaptable shapes, which can be adjusted according to the end face shape of the solid-state battery module 3, and is not limited here.

[0045] In this embodiment, by setting up a multi-stage amplification component 131 and a pressure application component 132, the multi-stage amplification component 131 realizes the step-by-step amplification of the driving force, which can obtain a larger output pressure with a smaller input of the driving component 12, thereby meeting the high-pressure pressurization requirements while reducing the overall size and energy consumption of the pressurization device 1.

[0046] Example 3 Optionally, the multi-stage amplification assembly 131 includes a primary linkage group 1311 and a secondary linkage group 1312 movably connected to the primary linkage group 1311; the primary linkage group 1311 is connected to the drive member 12, the secondary linkage group 1312 is movably connected to the housing 2, and the secondary linkage group 1312 is connected to the pressure application member 132. The drive member 12 is used to provide driving force to the primary linkage group 1311 and the secondary linkage group 1312. The primary linkage group 1311 is used to amplify the driving force provided by the drive member 12 in the first stage, and the secondary linkage group 1312 is used to amplify the driving force after the first stage amplification in the second stage, and apply it to the solid-state battery module 3 through the pressure application member 132.

[0047] Specifically, the first-stage linkage 1311 is connected to the drive unit 12 and is used to receive the initial driving force output by the drive unit 12; One end of the secondary linkage assembly 1312 is directly or indirectly connected to the inner wall of the housing 2, and the other end is movably connected to the pressure applying component 132, used to transmit the amplified driving force to the pressure applying component 132, thereby acting on the solid-state battery module 3. Direct connection means the secondary linkage assembly 1312 is directly movably connected to the inner wall of the housing 2; indirect connection means... Figure 1 As shown, the secondary linkage 1312 is indirectly and movably connected to the inner wall of the housing 2 through the fixing member 11 described in the subsequent embodiment. The fixing member 11 is fixedly connected to the inner wall of the housing 2, and the secondary linkage 1312 is movably connected to the fixing member 11.

[0048] The driving component 12 provides driving force to the primary linkage 1311 and the secondary linkage 1312, causing them to move synchronously. The primary linkage 1311 amplifies the initial driving force provided by the driving component 12, converting the smaller input driving force into an amplified intermediate driving force. The secondary linkage 1312 receives this amplified intermediate driving force and further amplifies it, achieving a second increase in driving force. The driving force, amplified in two stages, is transmitted to the pressure applying component 132 through the secondary linkage 1312, which smoothly applies pressure to the solid-state battery module 3, completing the pressurization operation. The amplification factors of the primary linkage 1311 and the secondary linkage 1312 are multiplied to obtain the two-stage amplification factor, which can reach several hundred times.

[0049] In this embodiment, by making the multi-stage amplification component 131 include a primary linkage group 1311 and a secondary linkage group 1312, the multi-stage amplification component 131, relying on the mechanical characteristics of linkage transmission, can amplify the relatively small driving force input by the driving component 12 to hundreds of times, further adapting to the high pressure required for pressurizing the solid-state battery 100, and completing the pressurization operation of the solid-state battery module 3. At the same time, the structure is compact and the force transmission is stable, which can improve the stability and reliability of the pressurization process.

[0050] Example 4 Optionally, the first-stage linkage 1311 includes a first link 13111 and a second link 13112 rotatably connected to the first link 13111; the second-stage linkage 1312 includes a third link 13121 and a fourth link 13122 rotatably connected to the third link 13121; the first link 13111 is connected to the drive member 12, the second link 13112 is rotatably connected to the third link 13121, the third link 13121 is rotatably connected to the pressure member 132, and the fourth link 13122 is rotatably connected to the housing 2; during the pressurization process, the first link 13111, the second link 13112, the third link 13121, and the fourth link 13122 move from a non-dead position to a dead position.

[0051] Specifically, such as Figures 1 to 5 As shown, the first link 13111 is located between the pressure-applying component 132 and the driving component 12. The first link 13111 is connected to the driving component 12 and receives the initial driving force output by the driving component 12 as the input end for force amplification. One end of the first link 13111 is rotatably connected to the second link 13112, and the end of the second link 13112 away from the first link 13111 is rotatably connected to one end of the third link 13121, realizing the power transmission between the first-level link group 1311 and the second-level link group 1312. The end of the third link 13121 away from the second link 13112 is rotatably connected to the pressure-applying component 132, used to transmit the amplified driving force to the pressure-applying component 132. The end of the fourth link 13122 away from the third link 13121 is directly or indirectly rotatably connected to the housing, so that the second-level link group 1312 obtains a fixed support fulcrum. Rotary connections can be made using hinges, pins, or other methods, as long as they allow for flexible rotation between the links.

[0052] It should be noted that in this embodiment, the "dead point position" refers to the position where the first link 13111 and the second link 13112, or the third link 13121 and the fourth link 13122, are collinear, with an included angle of 180°. However, during actual assembly and use, slight angular deviations may occur due to manufacturing tolerances. Links within an angle range close to collinearity, i.e., close to 180°, can be considered as near-dead point positions. The corresponding non-dead point positions refer to positions where the included angles of the links are not collinear.

[0053] like Figure 2 As shown, the pressurizing device 1 is in the initial working position, and the first link 13111 and the second link 13112, the third link 13121 and the fourth link 13122 are all in non-dead position. At this time, the first included angle and the second included angle are both obtuse angles.

[0054] When the solid-state battery module 3 is pressurized, the drive component 12 outputs driving force to the first link 13111, causing the first link 13111 to move, which in turn drives the second link 13112, which is rotatably connected to it, to move together; when the second link 13112 moves, it drives the third link 13121 to move, which in turn drives the fourth link 13122 to move, so as to realize the synchronous linkage of the four links.

[0055] like Figures 2-4 As shown, during the linkage process, the first link 13111 and the second link 13112 gradually move from the non-dead position to the dead position, while the third link 13121 and the fourth link 13122 also move from the non-dead position to the dead position simultaneously. During this process, both the first and second included angles gradually approach 180° from their initial obtuse angles.

[0056] like Figure 4 As shown, when the pressurizing device 1 is in the extreme position, the first link 13111 and the second link 13112 are collinear, and the third link 13121 and the fourth link 13122 are collinear. At this time, the linkage mechanism is in a dead point state.

[0057] like Figure 5 As shown, the first link 13111 and the second link 13112 form a first included angle Angle-1, and the third link 13121 and the fourth link 13122 form a second included angle Angle-2. Figure 6 The diagram illustrates the first included angle Angle-1 and the first included angle Angle-1, as well as the variation of the total multiplier pressure with the output angle of the drive element 12. (By...) Figure 6 It can be deduced that the first included angle, Angle-1, gradually increases from an initial 124.8° with non-linear characteristics, reaching a maximum of 179.8°. According to the principles of linkage mechanics, when the included angle approaches 180°, the theoretical output force is infinite, and it possesses a dead-point self-locking function. Simultaneously, the pressure at the final stage of the second included angle, Angle-2, also approaches 180°. The total pressure multiplication curve shows that theoretically, the pressure amplification factor can reach over 3000 times. However, considering efficiency and linkage deformation, the actual total pressure amplification factor is between 100 and 300 times.

[0058] In this embodiment, by making the first-stage linkage 1311 include a first link 13111 and a second link 13112, and the second-stage linkage 1312 include a third link 13121 and a fourth link 13122, during the pressurization process, the first link 13111 and the second link 13112, the third link 13121 and the fourth link 13122 move from non-dead position to dead position. In this way, the pressure amplification factor gradually increases during the pressurization process, meeting the increasingly higher pressure requirements of the solid-state battery 100, effectively reducing the output power required by the drive component 12, and completing the entire pressurization process with only a low-power drive power supply. In addition, at the dead position, it has a reverse self-locking function, which is safe and reliable, while reducing the pressure on the power system and achieving energy saving.

[0059] In some embodiments, such as Figure 1 As shown, the first-stage linkage 1311 may include two second linkages 13112, and the second-stage linkage 1312 may include two third linkages 13121 and two fourth linkages 13122. The two second linkages 13112, the two third linkages 13121 and the two fourth linkages 13122 are symmetrically arranged on both sides of the first linkage 13111 and connected accordingly. This symmetrical arrangement structure allows the driving force to be transmitted to the pressure-applying component 132 more evenly, preventing the pressure-applying component 132 from tilting due to uneven force, ensuring that the pressure is evenly distributed on the end face of the solid-state battery module 3, and further improving the uniformity and stability of the pressure.

[0060] Example 5 Optionally, the drive member 12 is a rotary drive member 12; the force amplification assembly 13 also includes a lead screw assembly 133, which is connected between the drive member 12 and the multi-stage amplification assembly 131; the lead screw assembly 133 is used to convert the rotary motion of the drive member 12 into linear motion.

[0061] Specifically, such as Figure 1 and Figure 2 For ease of explanation, the direction of linear motion is defined as the first direction, which is as follows: Figure 2 The X-axis direction is shown.

[0062] The driving component 12 can be a servo motor, stepper motor, or other rotary driving component 12.

[0063] like Figure 1 and Figure 2As shown, the lead screw assembly 133 extends along the first direction, and one end of the lead screw assembly 133 is connected to the output end of the drive member 12, and the other end is connected to the first link 13111 of the multi-stage amplification assembly 131, so that the first link 13111 moves linearly along the first direction, and then drives the pressure application member 132 to move linearly along the first direction through the second link 13112, the third link 13121 and the fourth link 13122, thereby applying pressure to the solid-state battery module 3.

[0064] In this embodiment, by setting a lead screw assembly 133, the rotational motion of the drive component 12 can be converted into linear motion, resulting in high driving precision and smooth transmission. This allows for precise control of the movement process of the multi-stage amplification component 131, thereby precisely controlling the pressure applied to the solid-state battery module 3 and improving the controllability and accuracy of the pressurization process. Simultaneously, the lead screw assembly 133 also amplifies the pressure, further increasing the total pressure amplification factor of the pressurization device 1 and better meeting the high-pressure requirements of the solid-state battery 100.

[0065] Example 6 Optionally, the lead screw assembly 133 includes a threaded sleeve 1332 and a lead screw 1331. The support 1333 is fixedly connected to the base 14. The threaded sleeve 1332 is connected to the multi-stage amplification assembly 131. The lead screw 1331 is connected to the drive 12. The lead screw 1331 passes through the threaded sleeve 1332 and is threadedly engaged with the threaded sleeve 1332.

[0066] Specifically, such as Figure 2 As shown, the threaded sleeve 1332 is fixedly connected to the first connecting rod 13111 of the multi-stage amplification assembly 131, and the first connecting rod 13111 is located between the two support members 1333.

[0067] The lead screw 1331 can be any type of lead screw, such as a trapezoidal lead screw 1331. The lead screw 1331 extends along the first direction, and one end of the lead screw 1331 is connected to the output end of the drive unit 12. The other end of the lead screw 1331 passes through the threaded sleeve 1332 and is threadedly engaged with the threaded sleeve 1332.

[0068] The driving component 12 drives the lead screw 1331 to rotate around its own axis. Since the lead screw 1331 and the threaded sleeve 1332 form a threaded transmission, when the lead screw 1331 rotates, it will drive the threaded sleeve 1332 to make linear motion in the first direction, which will drive the first connecting rod 13111 to generate displacement in the first direction in sync. Then, through the second connecting rod 13112, the third connecting rod 13121 and the fourth connecting rod 13122, the pressure component 132 will be driven to generate displacement.

[0069] like Figure 7 As shown, Figure 7The diagram shows the change in displacement of the first connecting rod 13111 and the pressure applying member 132 as the number of revolutions output by the driving member 12 changes, wherein... Figure 7 As can be seen from the diagram, S1 refers to the first connecting rod 13111, and S2 refers to the pressure-applying component 132. The displacement of the first connecting rod 13111 changes linearly, which conforms to the transmission principle of the lead screw 1331. The displacement of the pressure-applying component 132 exhibits a characteristic of large displacement rate at first and then small displacement rate. In this way, the displacement of the pressure-applying component 132 can be adapted to the expansion force and expansion displacement requirements of the solid-state battery 100. That is, the cell of the solid-state battery 100 has a larger expansion displacement in the early stage and a smaller expansion displacement change in the later stage.

[0070] In this embodiment, the rotational motion output by the drive unit 12 is converted into the linear motion of the first link 13111 of the multi-stage amplification component 131 through the cooperation of the lead screw and the threaded sleeve 1332. At the same time, the lead screw 1331 can play the role of pressure amplification, further improving the total pressure amplification factor of the pressurization device 1 and further adapting to the high-pressure pressurization requirements of the solid-state battery 100.

[0071] Optionally, the pressurizing device 1 further includes a base 14, which is connected to the housing 2; the lead screw assembly 133 further includes a support member 1333, which is fixedly mounted on the base 14 and connected to the lead screw 1331. Specifically, the base 14 can be directly or indirectly connected to the inner wall of the housing 2. Direct connection means the base 14 is directly and fixedly connected to the inner wall of the housing 2; indirect connection means... Figure 1 As shown, the base 14 is indirectly connected to the inner wall of the housing 2 through the fastener 11 described in the subsequent embodiments. The fastener 11 is fixedly connected to the inner wall of the housing 2, and the base 14 is fixedly connected to the bottom end of the fastener 11.

[0072] The lead screw assembly 133 also includes a support member 1333, such as Figure 1 and Figure 2 As shown, there can be two support members 1333, which are spaced apart along the first direction on the base 14 and fixedly connected to the base 14. Each support member 1333 has a through hole, through which the lead screw 1331 passes to secure it. Thus, the support members 1333 and the base 14 provide support for the lead screw 1331, improving the smoothness of its movement. In some embodiments, the pressurizing device 1 further includes a reducer 16 and a coupling 17. The output end of the drive member 12 is connected to the input end of the reducer 16, and the output end of the reducer 16 is connected to the lead screw 1331 through the coupling 17. In this way, the high-speed output of the drive member 12 is reduced by the reducer 16 and then transmitted to the lead screw 1331 through the coupling 17.

[0073] Example 7 Optionally, such as Figure 8 As shown, the pressurizing device 1 also includes a guide structure 15, which is located between the housing 2 and the pressure-applying component 132 and is fixedly connected to the housing 2; the pressure-applying component 132 is movably connected to the guide structure 15, and the guide structure 15 is used to guide the movement of the pressure-applying component 132.

[0074] Specifically, one end of the guide structure 15 is directly or indirectly connected to the housing 2. A direct connection means the guide structure 15 is directly and fixedly connected to the inner wall of the housing 2; an indirect connection means... Figure 1 As shown, the base 14 is indirectly connected to the inner wall of the housing 2 through the fastener 11 described in the subsequent embodiment. The fastener 11 is fixedly connected to the inner wall of the housing 2, and the guide structure 15 is fixedly connected to the fastener 11.

[0075] The pressure-applying component 132 and the guide structure 15 can be movably connected via a slide groove, slide rail, or other means. When the multi-stage amplification assembly 131 drives the pressure-applying component 132 to move linearly along the first direction, the pressure-applying component 132 moves along the first direction on the guide structure 15 to guide the movement of the pressure-applying component 132. In this way, by guiding the movement of the pressure-applying component 132 through the guide structure 15, the deviation of the pressure-applying component 132 during the pressurization process can be avoided, thus improving the stability of the movement.

[0076] Example 8 Optionally, the guide structure 15 includes a plurality of guide posts 151, which are spaced apart between the fixing member 11 and the pressure member 132. The guide posts 151 are fixedly connected to the fixing member 11, and the pressure member 132 is slidably connected to the guide posts 151.

[0077] Specifically, such as Figure 8 As shown, the guide post 151 can be fixedly connected to the housing 2 or the fastener 11 by welding, bonding or other means. The guide post 151 extends along the first direction, and the pressure member 132 is provided with a corresponding guide hole. The guide post 151 passes through the guide hole, so that the pressure member 132 can slide along the axial direction of the guide post 151, so that the pressure member 132 always moves along the first direction.

[0078] For example, the number of guide posts 151 can be 2, 3, 4, etc., and multiple guide posts 151 are spaced apart between the fixing member 11 and the pressure member 132. The specific setting method can be set according to the actual situation.

[0079] In this embodiment, by setting multiple guide posts 151, the multiple guide posts 151 together guide the movement of the pressure-applying member 132, thereby further improving the motion stability.

[0080] Example 9 Optionally, the pressurizing device 1 further includes a detection unit connected to the housing 2 and / or the pressure-applying component 132, the detection unit being used to detect the pressure applied to the fixing component 11 and / or the pressure-applying component 132.

[0081] Specifically, the detection unit is directly or indirectly connected to the housing 2. Direct connection means the detection unit is directly and fixedly connected to the inner wall of the housing 2; indirect connection means... Figure 1 As shown, the detection unit is indirectly connected to the inner wall of the housing 2 through the fastener 11 described in the subsequent embodiment. The fastener 11 is fixedly connected to the inner wall of the housing 2, and the detection unit is fixedly connected to the fastener 11.

[0082] The detection unit may be fixedly connected only to the housing 2 or the fixing member 11, or it may be fixedly connected only to the pressure applying member 132. Alternatively, the detection unit may be fixedly connected to both the housing 2 or the fixing member 11 and the pressure applying member 132. The detection unit may be a pressure sensor or other pressure-detecting component. The pressure monitoring range of the pressure sensor may be 0.1MPa-50MPa, and the accuracy may be 0.01MPa.

[0083] The detection unit detects the pressure applied to the fixing member 11 and / or the pressure applying member 132, thereby determining the actual pressure value borne by the solid-state battery module 3. The corresponding pressure signal is then fed back to the controller of the solid-state battery 100. The controller can control the magnitude of the driving force output by the driving member 12 based on the pressure detected by the detection unit. In this way, precise closed-loop feedback control of pressure can be achieved, further meeting the pressure requirements of the battery cell at each stage.

[0084] Example 10 Optionally, the pressurizing device 1 further includes a fixing member 11, which is connected to the housing 2; a driving member 12 is connected to the fixing member 11; and a force amplification component 13 is movably connected to the fixing member 11.

[0085] Specifically, such as Figure 1 As shown, the fastener 11 can be a fixing plate, a fixing frame, or other structures. The fastener 11 is used to fit against the inner wall of the housing 2 and can be fixedly connected to the inner wall of the housing 2 by means of bolts, welding, etc. The fastener 11 can provide support for the drive component 12 and the force amplification assembly 13.

[0086] The fixing component 11 and the pressure applying component 132 are arranged opposite to each other along the first direction and are parallel to each other. The driving component 12 is fixedly connected to the side of the fixing component 11 away from the housing 2, and the force amplification component 13 is fixedly connected to the side of the fixing component 11 away from the fixing component 11. In this way, the force amplification component 13 and the driving component 12 can be connected to the fixing component 11 first, and then the whole assembly can be installed into the housing 2 and fixedly connected to the housing 2. This facilitates assembly and improves installation efficiency, while ensuring the relative positional accuracy between the components and ensuring the reliability of the pressurization process.

[0087] In summary, the pressurizing device 1 of the embodiments of this application may include at least the following advantages: In this embodiment, the pressurizing device 1 includes a fixing member 11, a driving member 12, and a force amplification component 13. The driving member 12 is connected to the fixing member 11, and the force amplification component 13 is movably connected to the fixing member 11 and connected to the driving member 12. The output end of the force amplification component 13 is used to connect to the solid-state battery module 3. The driving member 12 provides driving force to the force amplification component 13, thereby driving the force amplification component 13 to move. The driving force provided by the driving member 12 can be amplified by the force amplification component 13 and applied to the solid-state battery module 3. In this way, sufficient pressure can be applied to the solid-state battery 100 to meet the high-voltage pressurization requirements of the solid-state battery 100, thereby improving the conductivity and cycle performance of the solid-state battery 100, so that the solid-state battery 100 can be mass-produced and applied.

[0088] Example 11 This application embodiment also provides a solid-state battery 100, which includes a pressurizing device 1, a housing 2, and a solid-state battery module 3 as described in any of the above embodiments; the housing 2 has a receiving cavity 21, the solid-state battery module 3 is disposed in the receiving cavity 21, and the housing 3 and the cavity wall of the receiving cavity 21 enclose an installation space 4; the pressurizing device 1 is disposed in the installation space 4, and the driving component 12 of the pressurizing device 1 is connected to the housing 2, and the force amplification component 13 of the pressurizing device 1 is connected to the solid-state battery module 3.

[0089] Specifically, such as Figures 9-11 As shown, the housing 2 provides a base for housing and supporting components such as the solid-state battery module 3 and the pressurizing device 1. The housing 2 includes a frame, an upper cover, and a lower cover, which together form a receiving cavity 21. The solid-state battery module 3 also includes an electrical component 5, which is disposed within the receiving cavity 21.

[0090] like Figure 10 and Figure 11As shown, the solid-state battery module 3 includes a cell array 31 and an end plate 32 disposed at the end of the cell array 31. The cell array 31 includes multiple solid-state cells 311, which are stacked and arranged in a preset direction. A heat insulation member 312 is provided between two adjacent solid-state cells 311 to form the cell array 31. The solid-state battery module 3 is disposed in the receiving cavity 21 of the housing 2 and is spaced apart from the cavity wall of the receiving cavity 21, thereby forming an installation space 4 between the solid-state battery module 3 and the housing 2. The installation space 4 is used to accommodate the pressurizing device 1.

[0091] The pressurizing device 1 is located within the installation space 4. The driving component 12 of the pressurizing device 1 is directly attached and fixed to the frame of the housing 2, or the fixing component 11 of the pressurizing device 1 is attached and fixed to the frame of the housing 2, providing rear support. The pressure-applying component 132 of the force amplification assembly 13 of the pressurizing device 1 is attached and fixed to the end plate 32. The pressurizing direction of the pressurizing device 1 is consistent with the expansion direction of the solid-state cell 311. In this embodiment, it is along the large surface direction of the solid-state cell 311. Thus, the pressurizing device 1 can provide sufficient pressure to the solid-state battery module 3 to meet the high-voltage pressurization requirements of the solid-state battery 100, thereby improving the conductivity and cycle performance of the solid-state battery 100, enabling mass production and application of the solid-state battery 100. Using a mechanical structure to achieve pressurization avoids the oil leakage problem present in hydraulic pressurizing devices 1. Furthermore, the pressurizing device 1 is modularly designed, making installation simple and convenient.

[0092] It should be noted that the structure of the pressurizing device 1 in this embodiment is the same as that of the pressurizing device 1 in any of the above embodiments, and its beneficial effects are also similar, so it will not be described in detail here.

[0093] Example 12 Optionally, such as Figure 10 As shown, there are multiple sets of solid-state battery modules 3 and multiple pressurizing devices 1. The multiple sets of solid-state battery modules 3 are arranged in the receiving cavity 21, and each solid-state battery module 3 is provided with a pressurizing device 1.

[0094] Specifically, multiple solid-state battery modules 3 are installed inside the cavity 21, which can increase the overall capacity of the solid-state battery 100 and meet the power and capacity requirements of different application scenarios.

[0095] There are multiple pressurizing devices 1, with one pressurizing device 1 corresponding to each solid-state battery module 3. Each pressurizing device 1 can apply pressure to the corresponding solid-state battery module 3.

[0096] In some embodiments, multiple solid-state battery modules 3 can be arranged side-by-side within the receiving cavity 21. Specifically, as shown below... Figure 10As shown, the housing 2 has multiple partitions in its cavity 21, which divide the cavity 21 into multiple sub-cavities arranged side by side. Multiple solid-state battery modules 3 are respectively arranged in the multiple sub-cavities. Each solid-state battery module 3 has an installation space 4 between itself and the cavity wall of the corresponding sub-cavity. Each installation space 4 is equipped with a pressurizing device 1.

[0097] In this embodiment, by enabling each pressurizing device 1 to independently provide pressurizing power to the corresponding solid-state battery module 3, independent pressurization control of each group of solid-state battery modules 3 is achieved, which can adapt to the pressurization requirements of different modules and improve the overall adaptability.

[0098] Example 13: The solid-state battery 100 also includes the controller, which is electrically connected to the drive unit 12 of the pressurizing device 1. The controller is used to control the drive unit 12 to provide a driving force adapted to the target pressure requirement of the solid-state battery module 3.

[0099] Specifically, the controller can be electrically connected to the drive unit 12 of the pressurization device 1 via a communication harness. The target pressure requirement refers to the pressure requirement of the solid-state battery module 3 during the initial assembly stage, the charge-discharge cycle process, and the entire life cycle. This pressure requirement is determined based on the type and performance requirements of the solid-state battery cell 311.

[0100] In this embodiment, during the initial assembly stage, the controller controls the drive unit 12 to output an appropriate driving force according to the pressure requirements of the initial assembly stage, and then amplifies it through the force amplification component 13 to meet the pre-tightening force requirements of the solid-state battery module 3 in the initial assembly stage, thereby providing sufficient initial pre-tightening force for the solid-state battery module 3 to meet the assembly requirements of the solid-state battery module 3.

[0101] During the charge and discharge cycle of the solid-state battery module 3, pressure fluctuations will occur in the solid-state battery module 3. The controller can control the drive component 12 to provide an appropriate driving force according to the pressure requirements of the charge and discharge cycle. The force is then amplified by the force amplification component 13 and provided to the solid-state battery module 3. In this way, the pressure can be adjusted in real time during the charge and discharge cycle, so that the solid-state cell 311 can achieve the best performance.

[0102] During the entire life cycle of the solid-state battery module 3, the pressure of the solid-state battery module 3 will increase as the years of use accumulate. The controller can control the drive component 12 to provide an appropriate driving force according to the pressure requirements of the entire life cycle, and then amplify it through the force amplification component 13 before providing it to the solid-state battery module 3. In this way, as the solid-state battery module 3 is used, the pressure is actively adjusted to meet the expansion force requirements of the entire life cycle.

[0103] Example 14 like Figure 12 As shown, this application embodiment also provides a pressurization method for a solid-state battery 100 based on any of the above embodiments, the pressurization method including; S10: Control drive 12 to provide driving force to force amplification assembly 13 to drive force amplification assembly 13 to move; S20: The force amplification component 13 amplifies the driving force provided by the driving component 12 and applies it to the solid-state battery module 3.

[0104] In step S10, as Figure 12 As shown, when the driving component 12 is a servo motor, the servo motor rotates and outputs driving force; In step S20, such as Figure 12 As shown, after receiving the driving force from the driving component 12, the lead screw 1331 rotates, transmitting the force to the primary and secondary pressurizing mechanisms. These mechanisms then drive the movable plate to move, applying pressure to the cells of the solid-state battery module 3. Specifically, the primary pressurizing mechanism is a primary linkage group 1311, the secondary pressurizing mechanism is a secondary linkage group 1312, and the movable plate is the pressure-applying component 132. The specific structure is described in the aforementioned embodiment and will not be repeated here.

[0105] In this embodiment, the driving component 12 provides driving force to the force amplification component 13 to drive the force amplification component 13 to move. The force amplification component 13 amplifies the driving force provided by the driving component 12 and applies it to the solid-state battery module 3. In this way, sufficient pressure can be applied to the solid-state battery 100 to meet the high-voltage pressurization requirements of the solid-state battery 100, thereby improving the conductivity and cycle performance of the solid-state battery 100, so that the solid-state battery 100 can be mass-produced and applied.

[0106] Example 15 Optionally, step S10 includes: S101: Obtain the target pressure requirements for solid-state battery module 3; S102: Based on the target pressure requirement, control the drive unit 12 to provide the force amplification assembly 13 with the driving force required by the target pressure requirement.

[0107] like Figure 12 As shown, in step S101, at different working stages of the solid-state battery module 3, the controller obtains the target pressure requirement of the solid-state battery module 3 for the corresponding stage. The target pressure requirement is the pressure requirement of the solid-state battery module 3 in the initial assembly stage, the charge-discharge cycle process, or the whole life cycle. The pressure requirement corresponding to each stage is determined according to the type and performance requirements of the solid-state cell 311.

[0108] In step S102, the controller controls the drive unit 12 to provide the driving force required by the target pressure to the force amplification assembly 13.

[0109] In this embodiment, according to the pressure requirements of the initial assembly stage, the drive unit 12 is controlled to output an appropriate driving force, which is then amplified by the force amplification component 13 to meet the pre-tightening force requirements of the solid-state battery module 3 in the initial assembly stage, thereby providing sufficient initial pre-tightening force for the solid-state battery module 3 to meet the assembly requirements of the solid-state battery module 3.

[0110] During the charge and discharge cycle of the solid-state battery module 3, pressure fluctuations will occur in the solid-state battery module 3. According to the pressure requirements of the charge and discharge cycle, the drive component 12 is controlled to provide an appropriate driving force, which is then amplified by the force amplification component 13 and provided to the solid-state battery module 3. In this way, the pressure can be adjusted in real time during the charge and discharge cycle, so that the solid-state cell 311 can achieve the best performance.

[0111] During the entire life cycle of the solid-state battery module 3, the pressure of the solid-state battery module 3 will increase as the years of use accumulate. According to the pressure requirements of the entire life cycle, the drive component 12 is controlled to provide an appropriate driving force, which is then amplified by the force amplification component 13 and provided to the solid-state battery module 3. In this way, as the solid-state battery module 3 is used, the pressure is actively adjusted to meet the expansion force requirements of the entire life cycle.

[0112] Example 16 Optionally, if the pressurizing device 1 further includes the detection unit, step S101 includes: S1011: Obtain the pressure detected by the detection unit; S1012: Control the driving force provided by the drive unit 12 according to the detected pressure.

[0113] In step S1011, the detection unit can detect the actual pressure value borne by the solid-state battery module 3, and then feed back the corresponding pressure signal to the controller. In step S1012, the controller can control the driving force provided by the drive unit 12 according to the detected pressure magnitude.

[0114] In this embodiment, the controller obtains the pressure of the detection unit and then controls the driving force provided by the drive unit 12. In this way, precise closed-loop feedback control of pressure can be achieved, further meeting the pressure requirements of the battery cell at each stage.

[0115] Example 17 This application also provides a terminal, which includes the pressurization device 1 described in any of the above embodiments, the solid-state battery 100 described in any of the above embodiments, or the terminal uses the pressurization method described in any of the above embodiments.

[0116] The terminal can be a vehicle, a robot, etc. It should be noted that the structures of the solid-state battery 100 and the pressurizing device 1 in this embodiment are the same as those in any of the above embodiments, and their beneficial effects are also similar, so they will not be described in detail here. The steps of the pressurizing method described in this embodiment are the same as those in any of the above embodiments, and their beneficial effects are also similar, so they will not be described in detail here.

[0117] It should be noted that the pressurizing device 1, solid-state battery 100, pressurizing method, and terminal involved in the above embodiments may include at least one of Embodiments 1 to 17. For example, Embodiment 1 can be implemented as an independent embodiment, Embodiments 1+2 can be implemented as independent embodiments, Embodiments 1+2+3 can be implemented as independent embodiments, Embodiments 1+2+4 can be implemented as independent embodiments, Embodiments 1+2+3+4 can be implemented as independent embodiments, Embodiments 1+2+4+5 can be implemented as independent embodiments, Embodiments 1+2+3+4+5 can be implemented as independent embodiments, Embodiments 1+2+4+6 can be implemented as independent embodiments, Embodiments 1+2+3+4+6 can be implemented as independent embodiments, Embodiments 1+2+4+5+6 can be implemented as independent embodiments, Embodiments 1+2+3+4+5+6 can be implemented as independent embodiments, Embodiments 1+2+4+6+7 can be implemented as independent embodiments, and Embodiments 1+2+3+4+6+7 can be implemented as independent embodiments. Examples 1+2+4+5+6+7 can be implemented as independent examples, examples 1+2+3+4+5+6+7 can be implemented as independent examples, examples 1+2+4+6+8 can be implemented as independent examples, examples 1+2+3+4+6+8 can be implemented as independent examples, examples 1+2+4+5+6+8 can be implemented as independent examples, examples 1+2+3+4+5+6+8+9 can be implemented as independent examples, examples 1+2+4+6+7+8+8 can be implemented as independent examples, examples 1+2+4+5+6+7+8+9 can be implemented as independent examples, examples 1+2+3+4+5+6+7+8+9 can be implemented as independent examples, and so on, but are not limited to these, and will not be listed one by one here.

[0118] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0119] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A pressurizing device, characterized in that, The pressurizing device (1) includes A drive unit (12) is connected to the housing (2) of the solid-state battery (100); And a force amplification component (13), which is movably connected to the housing (2) and connected to the drive component (12), and is used to connect to the solid battery module (3) of the solid battery (100).

2. The pressurizing device according to claim 1, characterized in that, The force amplification component (13) includes a multi-stage amplification component (131) and a pressure application component (132). The pressure-applying component (132) is connected to the multi-stage amplification assembly (131), and the pressure-applying component (132) is used to connect to the solid-state battery module (3); The multi-stage amplification component (131) is located between the pressure application component (132) and the housing (2). The multi-stage amplification component (131) is movably connected to the housing (2) and connected to the drive component (12).

3. The pressurizing device according to claim 2, characterized in that, The multi-stage amplification assembly (131) includes a primary linkage group (1311) and a secondary linkage group (1312) movably connected to the primary linkage group (1311). The first-stage linkage (1311) is connected to the drive component (12), the second-stage linkage (1312) is movably connected to the housing (2), and the second-stage linkage (1312) is connected to the pressure component (132).

4. The pressurizing device according to claim 3, characterized in that, The first-level linkage (1311) includes a first link (13111) and a second link (13112) rotatably connected to the first link (13111). The second-level linkage (1312) includes a third link (13121) and a fourth link (13122) rotatably connected to the third link (13121). The first connecting rod (13111) is connected to the driving member (12), the second connecting rod (13112) is rotatably connected to the third connecting rod (13121), the third connecting rod (13121) is rotatably connected to the pressure member (132), and the fourth connecting rod (13122) is rotatably connected to the housing (2).

5. The pressurizing device according to any one of claims 2-4, characterized in that, The driving component (12) is a rotary driving component (12); The force amplification component (13) further includes a lead screw assembly (133), which is connected between the drive member (12) and the multi-stage amplification component (131).

6. The pressurizing device according to claim 5, characterized in that, The lead screw assembly (133) includes a threaded sleeve (1332) and a lead screw (1331). The threaded sleeve (1332) is connected to the multi-stage amplification assembly (131). The lead screw (1331) is connected to the drive member (12), and the lead screw (1331) passes through the threaded sleeve (1332) and is threadedly engaged with the threaded sleeve (1332).

7. The pressurizing device according to any one of claims 2-6, characterized in that, The pressurizing device (1) further includes a guide structure (15), which is located between the housing (11) and the pressure-applying component (132), and the guide structure (15) is fixedly connected to the housing (2); The pressure-applying component (132) is movably connected to the guide structure (15).

8. The pressurizing device according to claim 7, characterized in that, The guide structure (15) includes a plurality of guide posts (151), which are spaced apart between the housing (2) and the pressure-applying member (132). The guide posts (151) are fixedly connected to the housing (2), and the pressure-applying member (132) is slidably connected to the guide posts (151).

9. The pressurizing device according to any one of claims 2-8, characterized in that, The pressurizing device (1) further includes a detection unit, which is connected to the housing (2) and / or the pressure-applying component (132).

10. The pressurizing device according to any one of claims 1-8, characterized in that, The pressurizing device (1) also includes a fixing member (11), which is connected to the housing (2); The driving component (11) is connected to the fixing component (11); The force amplification component (13) is movably connected to the fixing component (11).

11. A solid-state battery, characterized in that, The solid-state battery (100) includes a pressurizing device (1) as described in any one of claims 1-10, a housing (2) and a solid-state battery module (3); the housing (2) has a receiving cavity (21), the solid-state battery module (3) is disposed in the receiving cavity (21), and the solid-state battery module (3) is enclosed with the cavity wall of the receiving cavity (21) to form an installation space (4). The pressurizing device (1) is disposed in the installation space (4), and the driving component (12) of the pressurizing device (1) is connected to the housing (2), and the force amplification component (13) of the pressurizing device (1) is connected to the solid-state battery module (3).

12. The solid-state battery (100) according to claim 11, characterized in that, The solid-state battery module (3) is provided in multiple groups, and the pressurizing device (1) is provided in multiple groups. The multiple groups of solid-state battery modules (3) are placed side by side in the receiving cavity (21), and each group of solid-state battery modules (3) is provided with one pressurizing device (1).

13. The solid-state battery (100) according to claim 11, characterized in that, The solid-state battery (100) also includes a controller, which is electrically connected to the drive (12) of the pressurizing device (1). The controller is used to control the drive (12) to provide a driving force that is adapted to the target pressure requirement of the solid-state battery module (3).

14. A pressurization method, characterized in that, The pressurization method includes: The control drive (12) provides driving force to the force amplification assembly (13) to drive the force amplification assembly (13) to move; The force amplification component (13) amplifies the driving force provided by the driving component (12) and applies it to the solid-state battery module (3).

15. The pressurization method according to claim 14, characterized in that, The control drive (12) is activated to provide driving force to the force amplification assembly (13), and the movement of the driving force amplification assembly (13) includes: Obtain the target pressure requirement of the solid-state battery module (3); According to the target pressure requirement, the drive unit (12) is controlled to provide the force amplification assembly (13) with the driving force required by the target pressure requirement.

16. The pressurization method according to claim 14, characterized in that, When the pressurizing device (1) also includes a detection unit, the control drive (12) is activated to provide driving force to the force amplification assembly (13), the movement of which includes: Obtain the pressure detected by the detection unit; The driving force provided by the drive unit (12) is controlled according to the detected pressure.

17. A terminal, characterized in that, The terminal includes: a pressurizing device (1) as described in any one of claims 1-10, or a solid-state battery (100) as described in any one of claims 11-13, or the terminal uses a pressurizing method as described in any one of claims 14-16.

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