Solid-state battery, power system, and vehicle

Abstract

The present disclosure provides a solid-state battery, a power system and a vehicle, and belongs to the technical field of automobile batteries. The solid-state battery comprises a battery cell, a support and an elastic member. The support is arranged on both sides of the battery cell in a first direction and clamps the battery cell, and the support has a receiving cavity. The elastic member is arranged in the receiving cavity. According to the present disclosure, the elastic member is arranged in the receiving cavity of the support, which can uniformly disperse the force transmitted from the battery cell to the support and improve the stress concentration of the solid-state battery.

Description

Technical Field

[0001] This disclosure pertains to the field of automotive battery technology, and particularly relates to a solid-state battery, a power system, and a vehicle. Background Technology

[0002] With the energy density of traditional liquid lithium-ion batteries and lithium-ion polymer batteries approaching theoretical limits in engineering, and organic electrolytes posing safety hazards such as flammability, the development of solid-state batteries has gradually become an important focus of the industry. Solid-state batteries are regarded as the core technology of the next generation of power batteries due to their high energy density and high safety.

[0003] Solid-state batteries are prone to a "breathing effect" during charge and discharge cycles, meaning that the cells tend to expand and contract periodically. Typically, support members are placed on both sides of the cell, and these support members are in contact with the external structure of the solid-state battery. The external structure of the solid-state battery constrains the support members on both sides of the cell, thereby achieving the purpose of constraining the cell.

[0004] However, the cell typically comes into contact with the support structure during periodic expansion and contraction, which may lead to stress concentration issues in solid-state batteries. Summary of the Invention

[0005] This disclosure provides a solid-state battery, a power system, and a vehicle, which can solve the technical problems existing in related technologies. The technical solution is as follows: This disclosure provides a solid-state battery, which includes a battery cell, a support member, and an elastic member. The support members are arranged on both sides of the battery cell in a first direction and clamp the battery cell; the support members have a receiving cavity. The elastic element is arranged within the receiving cavity.

[0006] In some possible implementations, the support has at least two of the receiving cavities.

[0007] In some possible implementations, the solid-state battery further includes a cover plate; The cover plate is arranged on both sides of the battery cell in the second direction, and the two side edges of the cover plate in the first direction are respectively connected to the support members on both sides of the battery cell, wherein the second direction is perpendicular to the first direction.

[0008] In some possible implementations, the support member has a first sidewall that is opposite to the battery cell in the first direction; The cover plate has bent portions on both sides in the first direction, and the bent portions are connected to the first sidewall.

[0009] In some possible implementations, the first sidewall has a first step on each of its two edges in the second direction, the first step being for the bent portion to overlap, and the first sidewall being flush with the bent portion.

[0010] In some possible implementations, the support member has a second sidewall spaced apart in a second direction, the second sidewall being for the edge of the cover plate to overlap.

[0011] In some possible implementations, the support member has a second sidewall spaced apart in a second direction, the second sidewall having a second step at one edge near the cell, the second step being for the edge of the cover plate to overlap, and the second sidewall being flush with the cover plate.

[0012] In some possible implementations, the cover plate is welded to the support member.

[0013] This disclosure also provides a power system including a hybrid solid-state battery as described above.

[0014] This disclosure also provides a vehicle including the power system described above.

[0015] The technical solution provided in this disclosure includes at least the following beneficial effects: The solid-state battery disclosed herein has an elastic element arranged in the cavity of the support member, which can more evenly disperse the force transmitted from the cell to the support member, improve the stress concentration of the solid-state battery, and at the same time, the buffering effect of the elastic element can weaken the force transmitted from the cell to the support member, thus providing protection for the solid-state battery.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. In the drawings: Figure 1 This is an exploded view of a solid-state battery provided in an embodiment of this disclosure; Figure 2 This is a cross-sectional view of a support member provided in an embodiment of this disclosure; Figure 3 This is a cross-sectional view of another support member provided in an embodiment of this disclosure; Figure 4 This is a cross-sectional view of another support member provided in an embodiment of this disclosure; Figure 5 This is a schematic diagram showing the positions of a battery cell and a support member according to an embodiment of this disclosure; Figure 6 This is an exploded view of another solid-state battery provided in an embodiment of this disclosure.

[0018] Legend 1. Solid-state batteries; 11. Battery cell; 111. Battery cell unit; 12. Supporting component; 121. First plate; 1211. First side wall; 122. Second plate; 123. Third plate; 1231. Second side wall; 1232. Second step; 124. Rib plate; 13. Elastic components; 14. Cover plate; 15. Buffer components; 16. Outer shell; 161. Cavity; 162. First edge; 163. Second edge; 17. First end cap; 18. Second end cap.

[0019] The accompanying drawings have illustrated specific embodiments of this disclosure, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other. This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Solid-state batteries (especially those with lithium or silicon-carbon anodes) may experience a "breathing effect" during charge-discharge cycles. Specifically, the electrodes within the cell may undergo periodic expansion and contraction during these cycles (which can be viewed as the cell itself expanding and contracting periodically). Understandably, the electrodes and the solid electrolyte form a solid-solid interface. When the electrodes contract, this interface may separate, creating gaps that weaken or even block ion transport, leading to a surge in internal resistance and even battery failure. Therefore, during solid-state battery assembly, support members are typically placed on both sides of the cell. These support members contact the external structure of the battery, constraining the support members and indirectly constraining the cell itself. This ensures a tighter contact between the electrodes and the solid electrolyte, preventing interface separation during electrode contraction. However, the periodic expansion and contraction of the cell in contact with the support members can easily cause stress concentration on the external structure of the solid-state battery.

[0023] This disclosure provides a solid-state battery 1. (See reference...) Figure 1 and Figure 2 The solid-state battery 1 includes a cell 11, a support member 12, and an elastic member 13. The support member 12 is arranged on both sides of the cell 11 in a first direction and clamps the cell 11; the support member 12 has a receiving cavity. (Reference) Figure 2 The elastic element 13 is arranged inside the receiving cavity.

[0024] Support member 12 in the first direction (e.g.) Figure 1 The two support members 12 are arranged on both sides of the cell 11 in the first direction (as shown in the X direction), and both sides are in contact with the surfaces of the cell 11 on both sides in the first direction. The two support members 12 are constrained in the first direction to ensure that the electrodes constituting the cell 11 are in close contact with the solid electrolyte and to prevent the interface separation between the electrodes and the solid electrolyte.

[0025] During charging or discharging, the electrodes of the cell 11 of the solid-state battery 1 undergo periodic expansion and contraction, which can be considered as the cell 11 undergoing periodic expansion and contraction. For ease of description of the following embodiments, a force transmission method is used. For example, when the cell 11 periodically expands and contracts, the resulting force is transmitted to the support member 12, and then to the external structure of the solid-state battery 1. An elastic member 13 is arranged within the cavity of the support member 12. The buffering effect of the elastic member 13 can more evenly distribute the force applied by the cell 11 to the support member 12 before it is transmitted to the external structure of the solid-state battery 1, thereby improving the stress concentration situation on the external structure of the solid-state battery 1.

[0026] In addition, an elastic element 13 is arranged in the cavity of the support 12. The elastic element 13 can buffer the force transmitted from the cell 11 to the support 12, weaken the force transmitted from the support 12 to the external structure of the solid-state battery 1, and also play a certain protective role for the external structure of the solid-state battery 1.

[0027] Therefore, by adopting the technical solution of this disclosure, the elastic element 13 is arranged in the cavity of the support 12, which can distribute the force transmitted from the cell 11 to the support 12 more evenly, improve the stress concentration of the solid-state battery 1, and at the same time, the buffering effect of the elastic element 13 can weaken the force transmitted from the cell 11 to the support 12. The weakened force is transmitted to the external structure of the solid-state battery 1, which can also play a certain protective role for the solid-state battery 1.

[0028] In some examples, reference Figure 2 The support member 12 may include a first plate 121, a second plate 122, and two third plates 123. The first plate 121 and the second plate 122 may be in a first direction (e.g., Figure 2 The first plate 121 is positioned at intervals along the second plate 122 (as shown in the X direction), and the second plate 122 can contact the battery cell 11. The first plate 121 can be located on the side of the second plate 122 away from the battery cell 11. Two third plates 123 can be positioned along the second direction (as shown in the X direction). Figure 2 The plates are arranged at intervals in the Y direction (as shown in the diagram), and both third plates 123 are connected between the first plate 121 and the second plate 122. The second direction can be perpendicular to the first direction.

[0029] The receiving cavity can be located within the area enclosed by the first plate 121, the second plate 122, and the two third plates 123.

[0030] In some possible implementations, refer to Figure 2 The support member 12 may have a receiving cavity.

[0031] In other words, the area enclosed by the first plate 121, the second plate 122, and the two third plates 123 (i.e., the area enclosed by the support member 12) can be a receiving cavity.

[0032] In some possible implementations, refer to Figure 3 and Figure 4 The support member 12 has at least two receiving cavities.

[0033] Among them, reference Figure 3 and Figure 4The support member 12 may also include a stiffener 124, which can be connected between the first plate 121 and the second plate 122, and can divide the area enclosed by the first plate 121, the second plate 122 and the two third plates 123 (i.e. the area enclosed by the support member 12) into at least two receiving cavities, each of which can be filled with an elastic member 13.

[0034] The stiffener 124 can improve the structural strength of the support member 12 and ensure the overall rigidity of the support member 12. At the same time, the elastic member 13 filled in the cavity can give the support member 12 a certain buffering capacity.

[0035] In some examples, reference Figure 3 The support member 12 may include a stiffener 124, which may be along a third direction (e.g., Figure 1 Extending in the Z direction (as shown), it divides the area enclosed by the support member 12 into two receiving cavities arranged in the second direction. The third direction is perpendicular to the first direction and perpendicular to the second direction.

[0036] When the solid-state battery 1 is installed in the vehicle, the first direction can be the width direction of the solid-state battery 1, the second direction can be the height direction of the solid-state battery 1, and the third direction can be the length direction of the solid-state battery 1.

[0037] The stiffener 124 extends along a third direction, dividing the area enclosed by the first plate 121, the second plate 122, and the two third plates 123 into two receiving cavities arranged along the height direction of the solid-state battery 1. Elastic members 13 are arranged in both receiving cavities, which can more evenly distribute the force transmitted from the cell 11 to the support member 12, improving the stress concentration in the solid-state battery 1. Simultaneously, the buffering effect of the elastic members 13 can weaken the force transmitted from the cell 11 to the support member 12. The weakened force is then transmitted to the external structure of the solid-state battery 1, providing some protection for the solid-state battery 1.

[0038] In some examples, the support 12 may include a stiffener 124 that may extend in a second direction to divide the area enclosed by the support 12 into two receiving cavities arranged in a third direction, each of which may be filled with an elastic member 13.

[0039] When the solid-state battery 1 is installed in the vehicle, the first direction can be the width direction of the solid-state battery 1, the second direction can be the height direction of the solid-state battery 1, and the third direction can be the length direction of the solid-state battery 1.

[0040] The stiffener 124 extends along the second direction, dividing the area enclosed by the first plate 121, the second plate 122, and the two third plates 123 (i.e., the area enclosed by the support member 12) into two receiving cavities arranged along the length of the solid-state battery 1. Elastic members 13 are arranged in both receiving cavities, which can more evenly distribute the force transmitted from the cell 11 to the support member 12, improving the stress concentration in the solid-state battery 1. Simultaneously, the buffering effect of the elastic members 13 can weaken the force transmitted from the cell 11 to the support member 12. This weakened force is then transmitted to the external structure of the solid-state battery 1, providing some protection for the solid-state battery 1.

[0041] In some examples, reference Figure 4 The support member 12 may include two stiffening plates 124, both of which can be along a third direction (e.g., Figure 1 Extending in the Z direction, and with the two stiffeners 124 spaced apart in the second direction, the area enclosed by the support 12 is divided into three receiving cavities arranged in the second direction.

[0042] Two ribs 124, spaced apart in the second direction, extend along the third direction, dividing the area enclosed by the first plate 121, the second plate 122, and the two third plates 123 into three accommodating cavities arranged in the height direction of the solid-state battery 1. Elastic members 13 are arranged within each of the three accommodating cavities, which can more evenly distribute the force transmitted from the cell 11 to the support member 12, improving the stress concentration in the solid-state battery 1. Simultaneously, the buffering effect of the elastic members 13 can weaken the force transmitted from the cell 11 to the support member 12. This weakened force is then transmitted to the external structure of the solid-state battery 1, providing some protection for the solid-state battery 1.

[0043] Of course, the area enclosed by the first plate 121, the second plate 122 and the two third plates 123 (and the area enclosed by the support member 12) can also be divided into at least three accommodating cavities by multiple stiffeners 124, and the at least three accommodating cavities can be arranged in various ways, which are not limited here.

[0044] In some possible implementations, refer to Figure 5 The battery cell 11 includes multiple battery cell units 111, which are arranged along a first direction. A buffer 15 is arranged between two adjacent battery cell units 111, and each buffer 15 is in contact with the battery cell units 111 on both sides.

[0045] It is understood that multiple cell units 111 are combined to form a cell 11, and each cell unit 111 may include electrodes and a solid electrolyte in close contact. During charge-discharge cycles, the electrodes typically undergo periodic expansion and contraction, which can be viewed as the periodic expansion and contraction of the cell unit 111. To address the issue of interface separation between the electrodes and the solid electrolyte during contraction, the cell 11 is usually rigidly constrained, i.e., a constraint force is applied to the cell 11 to ensure closer contact between the electrodes and the solid electrolyte in each cell unit 111, preventing interface separation during electrode contraction.

[0046] A buffer 15 is arranged between two adjacent battery cells 111. The buffer 15 can buffer the force applied to the buffer 15 by the periodic expansion and contraction of the battery cells 111, thereby reducing the force applied to the support 12 by the battery cells 11. The force applied to the support 12 by the battery cells 11 is then distributed more evenly by the support 12. After being distributed, it is then transferred to the external structure of the solid-state battery 1, thereby improving the stress concentration situation of the external structure of the solid-state battery 1.

[0047] In addition, the buffer 15 can buffer the force applied to the buffer 15 by the periodic expansion and contraction of the cell unit 111. The elastic member 13 can buffer the force transmitted from the cell 11 to the support member 12. The buffer 15 and the elastic member 13 form a secondary buffer, which can reduce the force transmitted to the external structure of the solid-state battery 1 and improve the service life of the external structure of the solid-state battery 1.

[0048] In some possible implementations, refer to Figure 1 The solid-state battery 1 also includes a cover plate 14. The cover plate 14 is arranged on both sides of the cell 11 in a second direction, and the two side edges of the cover plate 14 in the first direction are respectively connected to the support members 12 on both sides of the cell 11, wherein the second direction is perpendicular to the first direction.

[0049] The two cover plates 14 are connected to the support member 12 located on the cell 11 in the first direction at their respective side edges in the first direction. The cell 11 can be enclosed by the support member 12 and the cover plates 14. That is to say, the support member 12 and the cover plate 14 can serve as the external structure of the solid-state battery 1.

[0050] The elastic element 13 is arranged in the cavity of the support 12, which can distribute the force transmitted from the cell 11 to the support 12 more evenly. The distributed force is then transmitted to the cover plate 14 connected to the support 12, which can improve the stress concentration caused by the support 12 and the cover plate 14 as the external structure of the solid-state battery 1. At the same time, the buffering effect of the elastic element 13 can weaken the force transmitted from the cell 11 to the support 12. The weakened force is then transmitted to the external structure of the solid-state battery 1, which can also play a certain protective role for the solid-state battery 1.

[0051] In some possible implementations, refer to Figure 2 The support member 12 has a first sidewall 1211 facing away from the cell 11 in a first direction. The cover plate 14 has bent portions (not shown) on both sides in the first direction, and the bent portions are connected to the first sidewall 1211.

[0052] The first sidewall 1211 can be located on the first plate 121. That is, the bent portion can overlap and connect with the first plate 121. It can be understood that the bent portions of the two cover plates 14 on both sides in the first direction are respectively connected to the support members 12 located on both sides of the cell 11 in the first direction, and the cover plates 14 can constrain the support members 12 on both sides, thereby constraining the cell 11.

[0053] In some possible implementations, the first sidewall 1211 is provided with a first step (not shown in the figure) on both sides of the second direction, the first step is for the bent portion to overlap, and the first sidewall 1211 is flush with the bent portion.

[0054] It is understandable that the first sidewall 1211 is provided with a first step on both sides of the second direction, so that the bent part can overlap the first step, and the first sidewall 1211 and the bent part can be set to be flush in the second direction.

[0055] In some possible implementations, refer to Figure 4 The support member 12 has a second sidewall 1231 spaced apart in a second direction, the second sidewall 1231 being for the edge of the cover plate 14 to overlap.

[0056] It should be noted that in this embodiment, the cover plate 14 can be roughly regarded as a plate-like structure.

[0057] The second sidewall 1231 may be located on the third plate 123. The two sides of the cover plate 14 in the first direction overlap with the second sidewall 1231 of the support member 12 located on both sides of the cell 11 in the first direction.

[0058] In some possible implementations, refer to Figure 4The support member 12 has a second sidewall 1231 spaced apart in the second direction. The second sidewall 1231 has a second step 1232 on the side edge near the cell 11. The second step 1232 is for the edge of the cover plate 14 to overlap, and the second sidewall 1231 is flush with the cover plate 14.

[0059] It should be noted that in this embodiment, the cover plate 14 can be roughly regarded as a plate-like structure.

[0060] The second sidewall 1231 may be located on the third plate 123. The two sides of the cover plate 14 in the first direction overlap with the second steps 1232 of the third plate 123 of the support member 12 located on both sides of the cell 11 in the first direction, and the cover plate 14 and the third plate 123 may be flush in the first direction.

[0061] In some possible implementations, the cover plate 14 is welded to the support member 12.

[0062] The cover plate 14 is welded to the support member 12, which can ensure the connection stability between the cover plate 14 and the support member 12. At the same time, the cover plate 14 can support the support members 12 on both sides of the battery cell 11 to constrain the battery cell 11.

[0063] In some possible implementations, refer to Figure 6 The solid-state battery 1 may also include a housing 16. The housing 16 is bent to form a cavity 161, and the support member 12 and the cell 11 are assembled inside the cavity 161. The housing 16 has a first edge 162 and a second edge 163, both of which are located on the same side of one of the supports 12 away from the cell 11.

[0064] In some examples, the first edge 162 can be welded to the second edge 163.

[0065] Specifically, the first edge 162 and the second edge 163 can be aligned and welded together, so that the outer casing 16 can serve as the external structure of the solid-state battery 1, housing both support members 12 and the battery cell 11 within the outer casing 16. The welding of the first edge 162 and the second edge 163 together forms a weld seam in the outer casing 16, making it the external structure of the solid-state battery 1.

[0066] In some examples, reference Figure 6 The first edge 162 and the second edge 163 in the second direction (e.g.) Figure 6 The support members are spaced apart (as shown in the Y direction), and both the first edge 162 and the second edge 163 are welded to the support member 12.

[0067] Understandably, both the first edge 162 and the second edge 163 are welded to the support member 12, so that the outer shell 16 and a portion of one of the support members 12 are combined to form the external structure of the solid-state battery 1, housing one of the support members 12 and the battery cell 11 entirely within the outer shell 16. The welding of both the first edge 162 and the second edge 163 to the support member 12 creates two weld seams, allowing the outer shell 16 and a portion of one of the support members 12 to be combined to form the external structure of the solid-state battery 1.

[0068] In some possible implementations, refer to Figure 1 The solid-state battery 1 also includes a first end cap 17. The first end cap 17 is mounted on the end of the cell 11.

[0069] The first end cap 17 can also be made of PPA or flame-retardant PC, etc. Of course, the cap body can also be made of other materials, which are not limited here.

[0070] In addition to protecting the battery cell 11, the first end cap 17 can also integrate functional units such as an electrical connection unit and a low-voltage acquisition unit. For example, the electrical connection unit may include a busbar for connecting multiple battery cell units 111 in series or parallel; the low-voltage acquisition unit may include a acquisition harness and its connectors, which can be used to connect the battery cell 11 to the BMS (Battery Management System) and output the acquired parameters such as voltage and temperature of the battery cell 11 to the BMS.

[0071] The first end cap 17 and the outer shell 16 can also be detachably connected by means of snap-fit ​​or bolt connection.

[0072] In some possible implementations, refer to Figure 1 The solid-state battery 1 also includes a second end cap 18. The second end cap 18 is mounted on the side of the first end cap 17 opposite to the cell 11.

[0073] The second end cap 18 is made of insulating material.

[0074] After installing the first end cap 17 at the end of the battery cell 11, a second end cap 18 is installed on the side of the first end cap 17 facing away from the battery cell 11. It is understood that since the first end cap 17 integrates functional units such as electrical connection units and low-voltage acquisition units, it has exposed conductive metal parts, posing a potential hazard. Therefore, by providing the second end cap 18 on the side of the first end cap 17 facing away from the battery cell 11, the second end cap 18 can completely cover the conductive metal parts of the first end cap 17, eliminating potential hazards such as electric shock. Simultaneously, the second end cap 18 also provides a dustproof effect for the first end cap 17.

[0075] This disclosure also provides a power system including the solid-state battery 1 as described above.

[0076] This disclosure also provides a vehicle including the power system described above.

[0077] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this disclosure. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0078] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of this disclosure. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0079] In the description of this disclosure, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing this disclosure and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this disclosure; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0080] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0081] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this disclosure.

[0082] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Various modifications and variations can be made to this disclosure by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A solid-state battery (1), characterized in that, The solid-state battery (1) includes a cell (11), a support (12) and an elastic element (13). The support member (12) is arranged on both sides of the battery cell (11) in a first direction and clamps the battery cell (11). The support member (12) has a receiving cavity. The elastic element (13) is arranged within the receiving cavity.

2. The solid-state battery (1) according to claim 1, characterized in that, The support (12) has at least two of the receiving cavities.

3. The solid-state battery (1) according to claim 1, characterized in that, The solid-state battery (1) also includes a cover plate (14). The cover plate (14) is arranged on both sides of the battery cell (11) in the second direction, and the two side edges of the cover plate (14) in the first direction are respectively connected to the support members (12) on both sides of the battery cell (11), wherein the second direction is perpendicular to the first direction.

4. The solid-state battery (1) according to claim 3, characterized in that, The support member (12) has a first sidewall (1211) that is opposite to the cell (11) in the first direction. The cover plate (14) has bends on both sides in the first direction, and the bends are connected to the first sidewall (1211).

5. The solid-state battery (1) according to claim 4, characterized in that, The first sidewall (1211) has a first step on both sides of the second direction, the first step is for the bent part to overlap, and the first sidewall (1211) is flush with the bent part.

6. The solid-state battery (1) according to claim 3, characterized in that, The support member (12) has a second sidewall (1231) spaced apart in a second direction, the second sidewall (1231) being for the edge of the cover plate (14) to overlap.

7. The solid-state battery (1) according to claim 3, characterized in that, The support member (12) has a second sidewall (1231) spaced apart in a second direction. The second sidewall (1231) has a second step (1232) on one side edge near the cell (11). The second step (1232) is for the edge of the cover plate (14) to overlap, and the second sidewall (1231) is flush with the cover plate (14).

8. The solid-state battery (1) according to any one of claims 3-7, characterized in that, The cover plate (14) is welded to the support member (12).

9. A power system, characterized in that, Including the solid-state battery (1) as described in any one of claims 1-8.

10. A vehicle, characterized in that, Includes the power system as described in claim 9.

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