Battery assembly and terminal equipment

Abstract

The utility model relates to the technical field of battery packaging, and discloses a battery assembly and terminal equipment, and the battery assembly comprises a connecting plate group and a battery cell unit; the connecting plate group comprises a first connecting plate and a second connecting plate; the first connecting plate is provided with a first supporting surface, and the second connecting plate is fixedly connected with the first supporting surface; second supporting surfaces are respectively formed on two surfaces of the second connecting plate along the first direction; each battery cell unit comprises at least two battery cells, the bottom walls of the battery cells are connected with the first supporting surfaces, and the side walls of the battery cells are connected with the corresponding second supporting surfaces. The connecting plate group can limit the overall bending of the battery assembly in the plane where the first direction and the second direction are located, so that not only can the use quantity of fixing gummed paper in the battery assembly be effectively reduced and the assembly steps of the battery assembly be simplified, but also the size of the battery assembly in the thickness direction can be reduced, and an available space is reserved for capacity increase of a battery cell.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packaging, in particular to a battery assembly and a terminal device. Background Art

[0002] As modern terminal devices continue to place increasing demands on batteries, existing battery components are increasingly shifting from single-cell form to multi-cell series form. Multi-cell series battery components have higher voltages and are more easily able to achieve super-fast charging capabilities.

[0003] At present, when multiple battery cells are arranged and packaged in existing battery assemblies, fixing tape is generally used to fix the relative positions of the battery cells. The two sides, bottom and sides of the thickness direction of the multiple battery cells need to be connected with the corresponding fixing tape to achieve the fixation of the positions of the multiple battery cells. The number of connecting components in this type of battery assembly is large and the fixing reliability is weak. The fixing tape occupies more available space in the battery assembly, which will limit the capacity of the battery cells in the battery assembly. Utility Model Content

[0004] In view of this, the present invention provides a battery assembly to solve the problem that the fixing method of the battery cells in the existing battery assembly has poor reliability and occupies a large space.

[0005] In the first aspect, the utility model provides a battery assembly, comprising a connecting plate group and a battery cell unit; the connecting plate group comprises a first connecting plate arranged along a first direction and at least one second connecting plate arranged along a second direction, wherein the first direction intersects with the second direction; the first connecting plate has a first supporting surface, and the second connecting plate is fixedly connected to the first supporting surface; the two surfaces of the second connecting plate along the first direction respectively form second supporting surfaces; the battery cell unit comprises at least two battery cells arranged along the first direction, the bottom wall of the battery cell is connected to the first supporting surface, and the side wall of the battery cell is connected to the corresponding second supporting surface.

[0006] Beneficial effect: The second connecting plate is arranged on the first connecting plate, and the two together form a supporting structure. Since the second connecting plate and the first connecting plate are both plate-like structures with relatively high strength, when multiple battery cells are respectively connected to the corresponding first supporting surface and the second supporting surface, the connecting plate group can limit the bending of the battery assembly as a whole in the plane where the first direction and the second direction are located, thereby improving the structural strength of the battery assembly and making the connection stability between the battery cells higher. There is no need to stick tape on both sides of the thickness direction of adjacent battery cells, which can not only effectively reduce the number of fixing tapes used in the battery assembly and simplify the assembly steps of the battery assembly, but also reduce the size of the battery assembly in the thickness direction, leaving available space for increasing the capacity of the battery cells, and effectively solving the problem that the fixing method of the battery cells in the existing battery assembly has poor reliability and occupies more space.

[0007] In an optional embodiment, the first connecting plate and the second connecting plate are metal components, the first connecting plate includes a plate body and an insulating layer covering at least one side of the plate body, and the surface of the insulating layer forms the first supporting surface.

[0008] Beneficial effects: The metal component has a relatively thin thickness and a high structural strength, and is easy to process and manufacture. The insulating layer can improve the safety of the battery cell and the metal component after assembly. The first connecting plate can improve the puncture resistance of the side wall of the battery assembly.

[0009] In an optional embodiment, at least a portion of the first supporting surface and the second supporting surface is provided with an adhesive layer, and the battery cells are respectively bonded to the first supporting surface and the second supporting surface, so that the assembly process is simple and the connection method is reliable.

[0010] In an optional embodiment, the thickness of the first connecting plate and the second connecting plate ranges from 0.05 mm to 0.5 mm.

[0011] Beneficial effect: Selecting thinner first and second connecting plates can prevent the first and second connecting plates from affecting the dimensions of the battery assembly in the first and second directions.

[0012] In an optional embodiment, the connecting plate group further includes a limiting member provided on the first connecting plate, the limiting member is provided on a side of the first connecting plate away from the second connecting plate and extends along the second direction.

[0013] Beneficial effect: The limiting piece can be easily matched with external components to limit the position of the battery assembly, thereby improving the assembly convenience of the battery assembly.

[0014] In an optional embodiment, the battery assembly further includes a circuit board and a top insulating member, the circuit board is located on a side of the battery cell (3) away from the first connecting plate, the top insulating member is located between the circuit board and the top wall of the battery cell, and the circuit board is connected to each battery cell respectively.

[0015] Beneficial effects: Each battery cell can be connected simultaneously through a single circuit board, and the structure is simple and reliable.

[0016] In an optional embodiment, the battery assembly further includes a packaging component, which packages the circuit board in the battery cell and an end of the second connecting plate away from the first connecting plate.

[0017] Beneficial effect: The package can further enhance the connection strength between the circuit board, the battery cell and the second connecting plate.

[0018] In an optional embodiment, the package is an injection molded component.

[0019] Beneficial effects: This type of package is easier to manufacture, has a faster molding speed and a higher structural strength.

[0020] In an optional embodiment, the battery assembly further includes side insulating members, which are bonded to both sides of the battery cell unit along the first direction, and / or the battery assembly further includes side insulating members, which include a planar section and a bent section, the planar section is provided with a bent section on both sides along the first direction, the planar section is connected to one side of the battery cell unit in the third direction, the bent section extends along the surface of the battery cell unit and is connected to the other side of the battery cell unit in the third direction, wherein the third direction intersects with the first direction and the second direction at the same time.

[0021] Beneficial effect: The side insulating members can further improve the insulation performance on both sides of the battery cell unit in the first direction, and the side insulating members can further improve the insulation performance in the thickness direction of the battery cell unit.

[0022] In a second aspect, the present invention further provides a terminal device, which includes: a body having an installation position; and the above-mentioned battery assembly, which is arranged at the installation position and connected to the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of an explosion of a battery assembly with two battery cells according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A front view of the assembled battery assembly is shown;

[0026] Figure 3 This is a front view of an assembled battery assembly with three battery cells according to an embodiment of the present utility model;

[0027] Figure 4 for Figure 1 A front view of the connecting plate group of the battery assembly shown;

[0028] Figure 5 for Figure 4 An enlarged schematic diagram of point A of the connecting plate group is shown;

[0029] Figure 6 for Figure 4 A side view of the connecting plate assembly is shown;

[0030] Figure 7 for Figure 1An exploded view of the battery assembly shown after assembly with the remaining components.

[0031] Description of reference numerals:

[0032] 1. First connecting plate; 101. First supporting surface; 102. Plate body; 103. Insulating layer; 104. Limiting member;

[0033] 2. Second connecting plate; 201. Second supporting surface;

[0034] 3. Battery cell; 4. Adhesive layer; 5. Circuit board; 6. Top insulation; 7. Packaging; 801. Side insulation; 802. Side insulation; 8021. Flat section; 8022. Bend section; 803. Head tape; 804. Handle; 805. Middle insulation tape. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0036] The following combination Figures 1 to 7 , describing the embodiments of the present utility model.

[0037] According to an embodiment of the present utility model, on the one hand, a battery assembly is provided, including a connecting plate group and a battery cell unit; the connecting plate group includes a first connecting plate 1 arranged along a first direction and at least one second connecting plate 2 arranged along a second direction, wherein the first direction intersects with the second direction; the first connecting plate 1 has a first supporting surface 101, and the second connecting plate 2 is fixedly connected to the first supporting surface 101; the two surfaces of the second connecting plate 2 along the first direction respectively form second supporting surfaces 201; the battery cell unit includes at least two battery cells 3 arranged along the first direction, the bottom wall of the battery cell 3 is connected to the first supporting surface 101, and the side wall of the battery cell 3 is connected to the corresponding second supporting surface 201.

[0038] In the battery assembly of this embodiment, the second connecting plate 2 is arranged on the first connecting plate 1, and the two together form a supporting structure. Since the second connecting plate 2 and the first connecting plate 1 are both plate-like structures with relatively high strength, when multiple battery cells 3 are respectively connected to the corresponding first supporting surface 101 and the second supporting surface 201, the connecting plate group can limit the bending of the battery assembly as a whole in the plane of the first direction and the second direction, thereby improving the structural strength of the battery assembly and making the connection stability between the battery cells 3 higher. There is no need to stick tape on both sides of the thickness direction of adjacent battery cells 3, which can not only effectively reduce the number of fixing tapes used in the battery assembly and simplify the assembly steps of the battery assembly, but also reduce the size of the battery assembly in the thickness direction, leaving available space for increasing the capacity of the battery cells 3, effectively solving the problem that the battery cell fixing method in the existing battery assembly has poor reliability and occupies a large space.

[0039] It should be noted that the first direction refers to Figure 1 and Figure 2 The arrow in the middle points to the "first direction", and the second direction refers to Figure 1 、 Figure 2 as well as Figure 6 The middle arrow points to the "second direction", and the third direction refers to Figure 6 The arrow in the middle points to the direction of the "third direction".

[0040] Specifically, since the two sides of the adjacent battery cells 3 in the thickness direction do not need to be connected by fixing tape, the thickness of the local position in the battery assembly can be effectively reduced by at least 0.16 mm, which not only enables the thickness of the battery cells in the battery assembly to be designed to be thicker, but also makes the flatness of both sides of the thickness direction of the battery assembly better, and the battery assembly is not easy to interfere with external components during subsequent use and assembly.

[0041] Furthermore, there is no limitation on the assembly form of the connecting plate group, which can be an integral structure or a split structure. The first connecting plate 1 and the second connecting plate 2 can be an integral connecting plate group formed after pre-assembly or an integral connecting plate group machined into one piece, or they can be split components connected on-site when the battery assembly is assembled, which can be flexibly selected.

[0042] In one possible implementation, Figure 5 As shown, the first connecting plate 1 and the second connecting plate 2 are metal components. The first connecting plate 1 includes a plate body 102 and an insulating layer 103 covering at least one side of the plate body 102. The surface of the insulating layer 103 forms a first supporting surface 101. The metal component is thin in thickness and has high structural strength, and is easy to process and manufacture. The insulating layer 103 can improve the safety of the battery cell 3 after assembly with the metal component. The first connecting plate 1 can improve the puncture resistance of the side of the battery assembly.

[0043] It should be noted that since the battery cell 3 itself is provided with an isolation layer at the position corresponding to the second support surface 201, there is no need to provide an additional insulating layer on the surface of the second connecting plate 2. If the battery cell 3 itself has no isolation layer, an additional insulating layer needs to be provided on the surface of the second connecting plate 2.

[0044] There is no limitation on the number of the second connecting plates 2, which can be Figure 2 A second connecting plate 2 shown in Figure 3 The two second connecting plates 2 shown in the figure can be selected according to the number of battery cells 3 in the battery assembly.

[0045] Specifically, there is no strict limitation on the specific type of metal components, and they can be aluminum alloy components, magnesium alloy components, iron alloy components, etc., and can be selected according to the actual use environment of the battery assembly.

[0046] Preferably, the first connecting plate 1 and the second connecting plate 2 are both steel sheets.

[0047] In one possible implementation, Figure 5 As shown, at least a portion of the first support surface 101 and the second support surface 201 is provided with an adhesive layer 4, and the battery cell 3 is bonded to the first support surface 101 and the second support surface 201 respectively. The assembly process is simple and the connection method is reliable.

[0048] Specifically, the specific form of the adhesive layer 4 is not limited, and it can be a double-sided tape adhered to the first supporting surface 101 and the second supporting surface 201 , or it can be glue coated on the first supporting surface 101 and the second supporting surface 201 .

[0049] In addition, there is no limitation on the area of ​​the support surface covered by the adhesive layer 4. The adhesive layer 4 may cover only a partial area where the corresponding support surface cooperates with the battery cell 3, or the adhesive layer 4 may cover the entire support surface. The area of ​​the adhesive layer 4 is consistent with that of the support surface, and can be flexibly selected according to needs.

[0050] In one possible embodiment, the thickness range of the first connecting plate 1 and the second connecting plate 2 is 0.05 mm to 0.5 mm. The first connecting plate 1 and the second connecting plate 2 with a thinner thickness are selected to avoid the first connecting plate 1 and the second connecting plate 2 affecting the first and second direction dimensions of the battery assembly.

[0051] Specifically, the thickness of the first connecting plate 1 and the second connecting plate 2 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, etc. There is no limitation on the specific value of the thickness, and the thickness can be flexibly selected within the above range.

[0052] In a possible implementation, the connection plate set further comprises a limiting piece 104 arranged on the first connection plate 1, the limiting piece 104 is arranged on the side of the first connection plate 1 away from the second connection plate 2 and extends along the second direction, the limiting piece 104 facilitates cooperation with an external component to limit the position of the battery assembly, which can improve the assembly convenience of the battery assembly. In addition, when disassembling the battery assembly, the limiting piece 104 can also be pulled to quickly take out the battery assembly.

[0053] In a possible implementation, the specific structure of the limiting piece 104 is not limited, which can be in the form of a plate, a column, a sphere, etc., and is preferably a bent plate as shown in FIGS. 1, 2 and 3, in which the edge of the first connection plate 1 is bent towards the direction away from the battery cell 3. Figure 4 Figure 6 In a possible implementation, the specific structure of the limiting piece 104 is not limited, which can be in the form of a plate, a column, a sphere, etc., and is preferably a bent plate as shown in FIGS. 1, 2 and 3, in which the edge of the first connection plate 1 is bent towards the direction away from the battery cell 3.

[0054] In a possible implementation, the battery assembly further comprises a circuit board 5 and a top insulating piece 6, the circuit board 5 is located on the side of the battery cell 3 away from the first connection plate 1, and the top insulating piece 6 is located between the circuit board 5 and the top wall of the battery cell 3. The circuit board 5 is connected to each battery cell 3 respectively, and each battery cell 3 can be connected to the single circuit board 5 at the same time, which is simple and reliable in structure.

[0055] In a possible implementation, the specific structure of the limiting piece 104 is not limited, which can be in the form of a plate, a column, a sphere, etc., and is preferably a bent plate as shown in FIGS. 1, 2 and 3, in which the edge of the first connection plate 1 is bent towards the direction away from the battery cell 3.

[0056] In a possible implementation, the specific structure of the limiting piece 104 is not limited, which can be in the form of a plate, a column, a sphere, etc., and is preferably a bent plate as shown in FIGS. 1, 2 and 3, in which the edge of the first connection plate 1 is bent towards the direction away from the battery cell 3.

[0057] In a possible implementation, the battery assembly further comprises an encapsulating piece 7, the encapsulating piece 7 encapsulates the circuit board 5 on the side of the battery cell 3 away from the first connection plate 1, which can further improve the connection strength between the circuit board 5, the battery cell 3 and the second connection plate 2.

[0058] In a possible implementation, the encapsulating piece 7 is an injection molding member, which is easier to manufacture, has a faster molding speed and higher structural strength.

[0059] In a possible implementation, the specific structure of the limiting piece 104 is not limited, which can be in the form of a plate, a column, a sphere, etc., and is preferably a bent plate as shown in FIGS. 1, 2 and 3, in which the edge of the first connection plate 1 is bent towards the direction away from the battery cell 3.

[0060] In a possible implementation, the battery assembly further comprises a side insulating piece 801, the side insulating piece 801 is arranged on both sides of the battery cell unit along the first direction, which can further improve the insulation performance of the battery cell unit on both sides along the first direction.

[0061] ​In a possible embodiment, the battery assembly also includes a side insulating member 802, which includes a planar section 8021 and a bent section 8022. The planar section 8021 is provided with a bent section 8022 on both sides along the first direction. The planar section 8021 is connected to one side of the battery cell unit in the third direction. The bent section 8022 extends along the surface of the battery cell unit and is connected to the other side of the battery cell unit in the third direction. The third direction intersects with the first direction and the second direction at the same time. The side insulating member 802 can further improve the insulation performance of the battery cell unit in the thickness direction.

[0062] Specifically, the side insulating member 801 and the side insulating member 802 are both adhesive sheet-like insulating members.

[0063] In one possible embodiment, the battery assembly further includes a head tape 803, a lifting handle 804, and an intermediate insulating tape 805. The head tape 803 is respectively connected to the outer wall of the package 7 and the position of the battery cell 3 close to the package 7 to improve the connection reliability and insulation performance at this position; the lifting handle 804 is located between the bent section 8022 of the side insulating part 802 and the other side of the battery cell unit in the third direction. The operator can lift the battery assembly as a whole through the lifting handle 804; the head tape 803 is located between the circuit board 5 and the package 7 to improve the insulation performance at this position.

[0064] According to an embodiment of the present invention, on the other hand, a terminal device is provided, which includes: a body and the above-mentioned battery assembly, the body having an installation position, the battery assembly is arranged at the installation position and connected to the body.

[0065] Among them, terminal devices include mobile phones, tablets, laptops, etc.

[0066] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. A battery assembly, characterized in that: Including connecting plate group and battery cell unit; The connecting plate group comprises a first connecting plate (1) arranged along a first direction and at least one second connecting plate (2) arranged along a second direction, wherein the first direction intersects with the second direction; The first connecting plate (1) has a first supporting surface (101), and the second connecting plate (2) is fixedly connected to the first supporting surface (101); two surfaces of the second connecting plate (2) along the first direction respectively form second supporting surfaces (201); The battery cell unit comprises at least two battery cells (3) arranged along the first direction, the bottom wall of the battery cell (3) is connected to the first supporting surface (101), and the side wall of the battery cell (3) is connected to the corresponding second supporting surface (201).

2. The battery assembly according to claim 1, wherein: The first connecting plate (1) and the second connecting plate (2) are metal components. The first connecting plate (1) comprises a plate body (102) and an insulating layer (103) covering at least one side of the plate body (102). The surface of the insulating layer (103) forms the first supporting surface (101).

3. The battery assembly according to claim 1, wherein: At least a portion of the first supporting surface (101) and the second supporting surface (201) is provided with an adhesive layer (4), and the battery core (3) is respectively bonded to the first supporting surface (101) and the second supporting surface (201).

4. The battery assembly according to claim 1, wherein: The thickness of the first connecting plate (1) and the second connecting plate (2) ranges from 0.05 mm to 0.5 mm.

5. The battery assembly according to any one of claims 1 to 4, characterized in that The connecting plate group further comprises a limiting member (104), wherein the limiting member (104) is arranged on a side of the first connecting plate (1) facing away from the second connecting plate (2) and is extended along the second direction.

6. The battery assembly according to any one of claims 1 to 4, characterized in that: The battery assembly further comprises a circuit board (5) and a top insulating member (6), wherein the circuit board (5) is located on a side of the battery cell (3) away from the first connecting plate (1), and the top insulating member (6) is located between the circuit board (5) and the top wall of the battery cell (3), and the circuit board (5) is connected to each of the battery cells (3) respectively.

7. The battery assembly according to claim 6, characterized in that The battery assembly further comprises a packaging component (7), wherein the packaging component (7) packages the circuit board (5) in the battery core (3) and an end of the second connecting plate (2) away from the first connecting plate (1).

8. The battery assembly according to claim 7, characterized in that The packaging component (7) is an injection molded component.

9. The battery assembly according to any one of claims 1 to 4, characterized in that: The battery assembly further comprises a side insulating member (801), and the side insulating member (801) is bonded to both sides of the battery cell unit along the first direction. And / or, the battery assembly further includes a side insulating member (802), the side insulating member (802) including a planar section (8021) and a bent section (8022), the planar section (8021) is provided with the bent sections (8022) on both sides along the first direction, the planar section (8021) is connected to one side of the battery cell unit in the third direction, the bent section (8022) extends along the surface of the battery cell unit and is connected to the other side of the battery cell unit in the third direction, wherein the third direction intersects with both the first direction and the second direction.

10. A terminal device, characterized in that: include: a fuselage having a mounting location; The battery assembly according to any one of claims 1 to 9 is arranged at the installation position and connected to the body.

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