Battery assembly and terminal equipment

Abstract

The invention relates to the technical field of energy storage, in particular to a battery assembly and terminal equipment. The battery assembly is configured to be mounted to an external terminal device. The battery assembly includes a secondary battery, a pressure plate, and a connector. The secondary battery is provided with a first surface and a second surface, the first surface and the second surface are oppositely arranged along a first direction, and the first direction is a thickness direction of the secondary battery. The pressing plate comprises a pressing part and a fixing part, and the pressing part is connected with the first surface. The connecting piece is configured to be detachably connected with the pressing plate and external terminal equipment, the connecting piece is arranged on the fixing part in a penetrating mode, and an elastic piece is arranged between the connecting piece and the fixing part. The pressing plate and the external terminal equipment are detachably connected through the connecting piece, and the elastic piece is used for pressing the connecting piece and the fixing part of the pressing plate, so that in the process that the pressing plate presses the secondary battery, the secondary battery has a little deformation space and can be protected through the pressing plate, and the safety of the soft package battery is improved.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a battery assembly and a terminal device. Background Art

[0002] As the terminal device market gradually expands, higher requirements are placed on the energy density of terminal device batteries, and the batteries of personal mobile terminal devices are usually in the form of soft-pack batteries. In some countries or regions, soft-pack batteries for personal mobile terminal devices are required to be removable by individual users. In this regard, related technologies usually use double-sided tape to fix the soft-pack battery in the battery compartment of the terminal device. When the soft-pack battery needs to be removed, the soft-pack battery is directly torn off the battery compartment. This disassembly method will cause damage to the outer shell of the soft-pack battery, affecting the safety of the soft-pack battery. Summary of the invention

[0003] In view of this, the present application provides a battery assembly and terminal device that can improve the safety of soft-pack batteries.

[0004] In a first aspect, an embodiment of the present application provides a battery assembly configured to be installed to an external terminal device, the battery assembly comprising a secondary battery, a pressure plate and a connector. The secondary battery has a first surface and a second surface, the first surface and the second surface are arranged relative to each other along a first direction, and the first direction is the thickness direction of the secondary battery. The pressure plate comprises a clamping portion and a fixing portion, and the clamping portion is connected to the first surface. The connector is configured to detachably connect the pressure plate and the external terminal device, the connector is arranged through the fixing portion, and an elastic member is provided between the connector and the fixing portion.

[0005] The pressure plate and the external terminal device are detachably connected by a connecting piece, and an elastic piece is used to compress the connecting piece and the fixing part of the pressure plate, so that when the pressure plate compresses the secondary battery, the secondary battery has a little deformation space and can be protected by the pressure plate, thereby improving the safety of the soft-pack battery. When the secondary battery expands, the pressing part limits the secondary battery, the blocking part remains in the same position, and the fixing part is pushed by the secondary battery in the third direction, thereby applying pressure to the elastic piece. Since the elastic piece has a certain deformation ability under pressure, the secondary battery has a certain expansion space while limiting and restraining the secondary battery, thereby suppressing the expansion of the secondary battery and enhancing the cycle performance of the secondary battery.

[0006] In the above embodiments, an adhesive member is provided between the pressing portion and the first surface, and the adhesive member connects the first surface and the surface of the pressing portion facing the secondary battery.

[0007] The adhesive member can play a role in connecting the secondary battery and the pressing part, thereby improving the position stability of the secondary battery.

[0008] In one or more of the above embodiments, the connecting member includes a blocking portion and a locking portion that are connected to each other, the fixing portion is provided with a connecting hole, the locking portion is passed through the connecting hole and is configured to be detachably connected to an external terminal device, the elastic member is sleeved on the outer peripheral surface of the locking portion and is located between the blocking portion and the fixing portion, and the two ends of the elastic member respectively abut the blocking portion and the fixing portion.

[0009] By respectively abutting the blocking part and the fixing part at both ends of the elastic member, the elastic member has a pressing force to press the fixing part, so that the fixing part has a deformation space, so that it can deform when the secondary battery expands, reducing the external pressure of the secondary battery, so as to improve the safety of the secondary battery.

[0010] In one or more of the above embodiments, the elastic member includes a silicone pad or a rubber pad or a spring.

[0011] The silicone pad or rubber pad or spring has a more stable shape for easy installation.

[0012] In one or more of the above embodiments, the pressing plate further includes a bending portion extending along the first direction, the bending portion connecting the pressing portion and the fixing portion, and along the first direction, the distance between the pressing portion and the second surface is greater than the distance between the fixing portion and the second surface; an installation space is formed between the fixing portion and the bending portion, and the blocking portion and the elastic member are at least partially located in the installation space; When viewed along the second direction, the fixing portion is located between the pressing portion and the second surface, and the second direction is perpendicular to the first direction.

[0013] By providing the bent portion, on the one hand, the space between the fixed portion and the back cover can be expanded to accommodate the blocking portion and the elastic member, thereby improving the space utilization of the battery assembly. On the other hand, when the secondary battery begins to expand, the bent portion will first be straightened, and then the elastic member will be compressed. In this process, while the pressure plate and the connector apply pressure to the secondary battery, the secondary battery is allowed to expand to a certain extent, thereby delaying the expansion process of the battery assembly. When the secondary battery expands to a certain extent, the clamping portion clamps the secondary battery. At this time, the pressure plate will control the secondary battery to continue to expand, thereby improving the safety of the battery assembly.

[0014] In one or more of the above embodiments, the fixing portion includes a first portion and a second portion, the first portion and the second portion are overlapped along a first direction, the first portion and the second portion are both provided with connecting holes, and the locking portion is passed through the connecting holes of the first portion and the second portion.

[0015] The first part and the second part are overlapped along the first direction, thereby strengthening the overall structural strength of the fixing part and improving the fracture resistance of the fixing part.

[0016] In one or more of the above embodiments, the thickness of the pressing portion is Z1, 0.06 mm ≤ Z1 ≤ 0.2 mm.

[0017] The thickness of the pressing part is controlled between 0.06 mm and 0.2 mm, which is beneficial to reducing the space occupied by the pressing part and improving the energy density of the battery assembly.

[0018] In one or more of the above embodiments, the thickness of the fixing portion is Z2, 0.06 mm ≤ Z2 ≤ 0.4 mm.

[0019] The thickness of the fixing portion is controlled between 0.06 mm and 0.4 mm, which is beneficial to reducing the space occupied by the pressing portion and improving the structural strength of the fixing portion.

[0020] In one or more of the above embodiments, the connecting hole is elliptical, the locking portion is cylindrical, and there is a gap between the connecting hole and the locking portion.

[0021] There is a gap between the cylindrical locking portion and the elliptical connecting hole, thereby providing a deformation space for the displacement of the pressing portion.

[0022] In one or more of the above embodiments, the material of the pressing plate includes at least one of iron, aluminum, copper, an iron-containing alloy, an aluminum-containing alloy, and a copper-containing alloy.

[0023] In the second aspect, an embodiment of the present application provides a terminal device, including a frame body and a battery assembly. The frame body has a storage bin, and the storage bin has a bottom wall. The battery assembly includes a secondary battery, a pressure plate, a connector, and an elastic member. The secondary battery is accommodated in the storage bin, and the secondary battery has a first surface and a second surface arranged opposite to each other along a first direction. The pressure plate includes a connected clamping portion and a fixing portion, the clamping portion is connected to the first surface, and the second surface abuts the bottom wall. The first direction is the thickness direction of the secondary battery. The connector includes a blocking portion and a locking portion connected to each other, and the fixing portion is provided with a connecting hole. The locking portion is inserted into the connecting hole and is detachably connected to the frame body. The elastic member is sleeved on the outer peripheral surface of the locking portion and is located between the blocking portion and the fixing portion, and the two ends of the elastic member abut the blocking portion and the fixing portion respectively.

[0024] The pressing plate and the external terminal device are detachably connected through a connecting piece, and the connecting piece and the fixing part of the pressing plate are compressed by an elastic piece, so that when the pressing plate compresses the secondary battery, the secondary battery has a little deformation space and can be protected by the pressing plate, thereby improving the safety of the soft-pack battery.

[0025] In one or more of the above embodiments, the terminal device further includes a cover plate, the cover plate includes a plate body, the plate body covers the battery assembly and is connected to the frame body, and there is a gap between the pressing portion and the plate body.

[0026] There is a gap between the pressing part and the plate body, which provides space for the deformation of the secondary battery, allowing the secondary battery to expand to a certain extent, thereby delaying the expansion process of the battery assembly. When the secondary battery expands to a certain extent, the pressing part presses the secondary battery. At this time, the pressure plate will control the secondary battery to continue to expand, so as to improve the safety of the battery assembly.

[0027] In one of the above embodiments, the pressing plate further includes a bending portion extending along the first direction, the bending portion connecting the pressing portion and the fixing portion, along the first direction, the distance between the pressing portion and the bottom wall is greater than the distance between the fixing portion and the bottom wall, an installation space is formed between the fixing portion and the bending portion, and the blocking portion and the elastic member are at least partially located in the installation space. The cover plate further includes a limiting portion, the limiting portion is arranged on the side of the plate body facing the secondary battery, the limiting portion is provided with a limiting groove, and the blocking portion is at least partially located in the limiting groove.

[0028] By providing the bent portion, on the one hand, the space between the fixed portion and the back cover can be expanded to accommodate the blocking portion and the elastic member, thereby improving the space utilization of the battery assembly. On the other hand, when the secondary battery begins to expand, the bent portion will first be straightened, and then the elastic member will be compressed. In this process, while the pressure plate and the connector apply pressure to the secondary battery, the secondary battery is allowed to expand to a certain extent, thereby delaying the expansion process of the battery assembly. When the secondary battery expands to a certain extent, the clamping portion clamps the secondary battery. At this time, the pressure plate will control the secondary battery to continue to expand, thereby improving the safety of the battery assembly.

[0029] The blocking portion is at least partially located in the limiting groove, so that the connecting member is limited by the limiting portion to improve the position stability of the connecting member. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of a terminal device with the back cover removed in one embodiment of the present application.

[0031] Figure 2 It is a schematic diagram of the exploded structure of a terminal device in one embodiment of the present application.

[0032] Figure 3 It is a schematic structural diagram of the connection between the pressure plate and the frame body in one embodiment of the present application.

[0033] Figure 4 It is a structural schematic diagram of the connection between the pressure plate and the frame body in another embodiment of the present application.

[0034] Figure 5 yes Figure 2 A schematic diagram of the enlarged structure at point A in the middle.

[0035] Main component symbols 004, terminal equipment; 001, battery assembly; 11, secondary battery; 111, first surface; 112, second surface; 12, pressing plate; 121, pressing portion; 122, fixing portion; 1221, connecting hole; 1222, first part; 1223, second part; 123, bending part; 124. Installation space; 125. Adhesive; 13. Connector; 131, blocking portion; 132, locking portion; 14, elastic member; 002, frame body; 21, receiving chamber; 211, bottom wall; 003, cover plate; 31, plate body; 32, limiting portion; 321, limiting groove; Z, first direction; Y, second direction; X, third direction. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0037] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "provided on" another component, it can be directly provided on the other component or there may be an intermediate component at the same time.

[0038] Unless otherwise specified, the term "plurality" as used herein means two or more than two.

[0039] The terms "first", "second", etc. are only used to distinguish different objects and shall not be understood as indicating or implying relative importance or implying the quantity, specific order or primary and secondary relationship of the technical features indicated.

[0040] The term "perpendicular" is used to describe an ideal state between two components. In actual production or use, two components may be in a state that is approximately perpendicular to each other. For example, in combination with numerical descriptions, perpendicularity can refer to the angle between two straight lines being within the range of 90°±10°, perpendicularity can also refer to the dihedral angle between two planes being within the range of 90°±10°, and perpendicularity can also refer to the angle between a straight line and a plane being within the range of 90°±10°.

[0041] The term "parallel" is used to describe an ideal state between two components. In actual production or use, two components may be approximately parallel. For example, in combination with numerical descriptions, parallel can refer to the angle between two straight lines being within the range of 180°±10°, parallel can also refer to the dihedral angle between two planes being within the range of 180°±10°, and parallel can also refer to the angle between a straight line and a plane being within the range of 180°±10°.

[0042] It should be noted that when a parameter is greater than, equal to, or less than a certain endpoint value, it should be understood that the endpoint value is allowed to have a tolerance of ±5%.

[0043] It should be recognized that the dimensions of the structures shown in the drawings are given for better understanding and more convenient description, and the present application is not limited to the dimensions shown in the drawings. In order to make the present invention clear, elements irrelevant to the description are omitted from the details of this specification.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0045] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features in the following embodiments and examples can be combined with each other.

[0046] See also Figure 1 and Figure 2 An embodiment of the present application provides a terminal device 004, including a frame body 002 and a battery assembly 001.

[0047] The frame body 002 has a receiving chamber 21, and the receiving chamber 21 has a bottom wall 211. The bottom wall 211 is a wall surface of the receiving chamber 21 perpendicular to the first direction Z.

[0048] See also Figure 2 and Figure 3 The battery assembly 001 includes a secondary battery 11, and the secondary battery 11 is received in a receiving compartment 21. The secondary battery 11 has a first surface 111 and a second surface 112 arranged opposite to each other along a first direction Z, and the first direction Z is a thickness direction of the secondary battery 11.

[0049] The battery assembly 001 further includes a pressing plate 12 , a connecting member 13 and an elastic member 14 . The pressing plate 12 includes a pressing portion 121 and a fixing portion 122 connected to each other. The pressing portion 121 is connected to the first surface 111 , and the second surface 112 abuts against the bottom wall 211 .

[0050] The connecting member 13 includes a blocking portion 131 and a locking portion 132 connected to each other. The fixing portion 122 is provided with a connecting hole 1221 . The locking portion 132 is passed through the connecting hole 1221 and is detachably connected to the frame body 002 .

[0051] The elastic member 14 is sleeved on the outer peripheral surface of the locking portion 132 and is located between the blocking portion 131 and the fixing portion 122, and the two ends of the elastic member 14 abut against the blocking portion 131 and the fixing portion 122 respectively. When the secondary battery 11 expands, the pressing portion 121 limits the position of the secondary battery 11, the blocking portion 131 remains in position, and the fixing portion 122 is pushed by the secondary battery 11 along the third direction X, thereby applying pressure to the elastic member 14. Since the elastic member 14 has a certain deformation capacity under pressure, the secondary battery 11 has a certain expansion space while limiting and restraining the secondary battery 11, thereby suppressing the expansion of the secondary battery 11 and enhancing the cycle performance of the secondary battery 11.

[0052] In some embodiments, an adhesive 125 is provided between the pressing portion 121 and the first surface 111 , and the adhesive 125 connects the first surface 111 and the surface of the pressing portion 121 facing the secondary battery 11 . The adhesive 125 can connect the secondary battery 11 and the pressing portion 121 , thereby improving the position stability of the secondary battery 11 .

[0053] In some embodiments, the elastic member 14 includes a silicone rubber ring, a rubber rubber ring, a thermoplastic elastomer (TPE) rubber ring or a spring. The silicone rubber ring, the rubber rubber ring, the thermoplastic elastomer (TPE) rubber ring or the spring has a certain elasticity.

[0054] In some embodiments, the fixing portion 122 and the pressing portion 121 are made of the same material.

[0055] In some embodiments, the thickness of the fixing portion 122 is greater than the thickness of the pressing portion 121. Since the main force concentration position of the pressing plate 12 is the fixing portion 122 during the expansion of the secondary battery 11, by increasing the thickness of the fixing portion 122, the overall structural strength of the fixing portion 122 is strengthened, and the fracture resistance of the fixing portion 122 is improved; by reducing the thickness of the pressing portion 121, the space occupied by the pressing portion 121 on the terminal device 004 is reduced.

[0056] In some embodiments, the fixing portion 122 includes a first portion 1222 and a second portion 1223 , and the first portion 1222 and the second portion 1223 are overlapped along the first direction Z.

[0057] The first portion 1222 and the second portion 1223 are both provided with a connecting hole 1221 , and the locking portion 132 passes through the connecting hole 1221 of the first portion 1222 and the second portion 1223 .

[0058] See also Figure 3In some embodiments, the first portion 1222 and the second portion 1223 are integrally formed.

[0059] See also Figure 4 In some embodiments, the first part 1222 and the second part 1223 are formed by bending the sheet metal material as a whole, which is beneficial to improving the processing convenience of the fixing part 122. The difference in thickness among the second part 1223, the first part 1222 and the clamping part 121 is less than 10%. The first part 1222 and the second part 1223 are folded by bending to increase the thickness of the fixing part 122.

[0060] In some embodiments, the thickness of the pressing portion 121 is Z1, 0.06 mm≤Z1≤0.2 mm.

[0061] The thickness of the pressing portion 121 is controlled between 0.06 mm and 0.2 mm, which is beneficial to reducing the space occupied by the pressing portion 121 and improving the energy density of the battery assembly 001.

[0062] In some embodiments, the thickness of the fixing portion 122 is Z2, 0.06 mm≤Z2≤0.4 mm.

[0063] The thickness of the fixing portion 122 is controlled between 0.06 mm and 0.4 mm, which is beneficial to improving the structural strength of the fixing portion 122 .

[0064] See also Figure 3 and Figure 5 In some embodiments, the connecting hole 1221 is elliptical, the locking portion 132 is cylindrical, and there is a gap between the connecting hole 1221 and the locking portion 132. There is a gap between the cylindrical locking portion 132 and the elliptical connecting hole 1221, thereby providing a deformation space for the displacement of the pressing portion 121.

[0065] In some embodiments, the material of the press plate 12 includes at least one of iron, aluminum, copper, an alloy containing iron, an alloy containing aluminum, and an alloy containing copper.

[0066] See also Figure 2 and Figure 4 In some embodiments, the terminal device 004 further includes a cover plate 003, the cover plate 003 includes a plate body 31, the plate body 31 covers the battery assembly 001 and is connected to the frame body 002, and there is a gap between the pressing portion 121 and the plate body 31, thereby providing space for the deformation of the secondary battery 11, allowing the secondary battery 11 to expand to a certain extent, thereby delaying the expansion process of the battery assembly 001, and when the secondary battery 11 expands to a certain extent, the pressing portion 121 presses the secondary battery 11, and at this time the pressure plate 12 will control the secondary battery 11 to continue to expand, so as to improve the safety of the battery assembly 001.

[0067] In some embodiments, the pressing plate 12 further includes a bending portion 123 extending along the first direction Z, and the bending portion 123 connects the pressing portion 121 and the fixing portion 122. Along the first direction Z, the distance between the pressing portion 121 and the bottom wall 211 is greater than the distance between the fixing portion 122 and the bottom wall 211, and an installation space 124 is formed between the fixing portion 122 and the bending portion 123, and the blocking portion 131 and the elastic member 14 are at least partially located in the installation space 124.

[0068] When viewed along the second direction Y, the fixing portion 122 is located between the pressing portion 121 and the second surface 112 , and the second direction Y is perpendicular to the first direction Z. The second direction Y is the width direction of the secondary battery 11 .

[0069] By providing the bending portion 123, on the one hand, the space between the fixing portion 122 and the back cover can be expanded to accommodate the blocking portion 131 and the elastic member 14, thereby improving the space utilization rate of the battery assembly 001. On the other hand, when the secondary battery 11 begins to expand, the bending portion 123 will be straightened first, and then the elastic member 14 will be compressed. In this process, while the pressing plate 12 and the connecting member 13 apply pressure to the secondary battery 11, the secondary battery 11 is allowed to expand to a certain extent, thereby delaying the expansion process of the battery assembly 001. When the secondary battery 11 expands to a certain extent, the pressing portion 121 presses the secondary battery 11. At this time, the pressing plate 12 will control the secondary battery 11 to continue to expand, thereby improving the safety of the battery assembly 001.

[0070] In some embodiments, the cover plate 003 also includes a limiting portion 32, which is disposed on the side of the plate body 31 facing the secondary battery 11, and the limiting portion 32 is provided with a limiting groove 321, and the blocking portion 131 is at least partially located in the limiting groove 321, so that the connector 13 is limited by the limiting portion 32 to improve the position stability of the connector 13.

[0071] In addition, those skilled in the art should recognize that the above embodiments are only used to illustrate the present application and are not intended to be limiting of the present application. As long as they are within the spirit and scope of the present application, appropriate changes and modifications to the above embodiments are within the scope of the present application.

Claims

1. A battery assembly configured to be mounted on an external terminal device, characterized in that: include: A secondary battery, the secondary battery having a first surface and a second surface, the first surface and the second surface are arranged opposite to each other along a first direction, and the first direction is a thickness direction of the secondary battery; A pressing plate, the pressing plate comprising a pressing portion and a fixing portion, the pressing portion being connected to the first surface; The connecting member is configured to detachably connect the pressing plate and the external terminal device, the connecting member is passed through the fixing portion, and an elastic member is provided between the connecting member and the fixing portion.

2. The battery assembly according to claim 1, characterized in that An adhesive member is provided between the pressing portion and the first surface, and the adhesive member connects the first surface and a surface of the pressing portion facing the secondary battery.

3. The battery assembly according to claim 1, characterized in that The connecting member includes a blocking portion and a locking portion that are connected to each other, the fixing portion is provided with a connecting hole, the locking portion is passed through the connecting hole and is configured to be detachably connected to the external terminal device, the elastic member is sleeved on the outer peripheral surface of the locking portion and is located between the blocking portion and the fixing portion, and the two ends of the elastic member respectively abut the blocking portion and the fixing portion.

4. The battery assembly according to claim 3, characterized in that: The elastic member includes a silicone pad or a rubber pad or a spring.

5. The battery assembly according to claim 3, characterized in that: The pressing plate further comprises a bending portion extending along the first direction, the bending portion connecting the pressing portion and the fixing portion, and along the first direction, the distance between the pressing portion and the second surface is greater than the distance between the fixing portion and the second surface; an installation space is formed between the fixing portion and the bending portion, and the blocking portion and the elastic member are at least partially located in the installation space; When viewed along a second direction, the fixing portion is located between the pressing portion and the second surface, and the second direction is perpendicular to the first direction.

6. The battery assembly according to claim 3, characterized in that: The fixing portion includes a first portion and a second portion, the first portion and the second portion are overlapped along the first direction, the first portion and the second portion are both provided with the connecting hole, and the locking portion is passed through the connecting hole of the first portion and the second portion.

7. The battery assembly according to claim 1, characterized in that: The thickness of the pressing portion is Z1, 0.06 mm ≤ Z1 ≤ 0.2 mm; and / or, The thickness of the fixing portion is Z2, 0.06mm≤Z2≤0.4mm.

8. The battery assembly according to claim 3, characterized in that: The connecting hole is elliptical, the locking portion is cylindrical, and there is a gap between the connecting hole and the locking portion.

9. The battery assembly according to claim 1, wherein: The material of the pressing plate includes at least one of iron, aluminum, copper, an iron-containing alloy, an aluminum-containing alloy, and a copper-containing alloy.

10. A terminal device, characterized in that: Including the frame body; The frame body has a receiving compartment, and the receiving compartment has a bottom wall; A battery assembly, the battery assembly comprising a secondary battery, a pressing plate, a connecting member and an elastic member; The secondary battery is accommodated in the accommodation compartment, the secondary battery has a first surface and a second surface arranged opposite to each other along a first direction, the pressing plate includes a pressing portion and a fixing portion connected to each other, the pressing portion is connected to the first surface, the second surface abuts against the bottom wall, and the first direction is the thickness direction of the secondary battery; The connecting member comprises a blocking portion and a locking portion connected to each other, the fixing portion is provided with a connecting hole, the locking portion is passed through the connecting hole and is detachably connected to the frame body; The elastic member is sleeved on the outer peripheral surface of the locking portion and is located between the blocking portion and the fixing portion. Two ends of the elastic member abut against the blocking portion and the fixing portion respectively.

11. The terminal device according to claim 10, characterized in that: The terminal device further includes a cover plate, which includes a plate body, the plate body covers the battery assembly and is connected to the frame body, and a gap is provided between the pressing portion and the plate body.

12. The terminal device according to claim 11, characterized in that: The pressing plate further comprises a bending portion extending along a first direction, the bending portion connecting the pressing portion and the fixing portion, along the first direction, the distance between the pressing portion and the bottom wall is greater than the distance between the fixing portion and the bottom wall, an installation space is formed between the fixing portion and the bending portion, and the blocking portion and the elastic member are at least partially located in the installation space; The cover plate further comprises a limiting portion, which is arranged on a side of the plate body facing the secondary battery. The limiting portion is provided with a limiting groove, and the blocking portion is at least partially located in the limiting groove.

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