Battery and electric device

Abstract

The application discloses a battery and an electric device, which comprise a protection plate and at least two battery cells arranged side by side in a width direction; the battery cell comprises a first side wall, a second side wall and a third side wall, the first side wall and the second side wall are connected with an inclined fourth side wall, and the first side wall and the third side wall are connected with an inclined fifth side wall; the fourth side wall is provided with a first sealing edge part, the fifth side wall is provided with a second sealing edge part, and the battery cell comprises tabs respectively extending from the first sealing edge part and the second sealing edge part; when the battery cells are connected in parallel, the polarities of two adjacent tabs in two adjacent battery cells are the same, and the two adjacent tabs are connected into a first conductive part; the protection plate is connected with the outermost tabs of the two outermost battery cells and the first conductive part; when the battery cells are connected in series, the polarities of two adjacent tabs in two adjacent battery cells are opposite, and the two adjacent tabs are connected into a second conductive part; and the protection plate is connected with the outermost tabs of the two outermost battery cells. The battery can avoid interference between the end folding angles of adjacent parts of two adjacent battery cells and the protection plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery structure, and more particularly, to a battery. BACKGROUND

[0002] With the development of electronic technology, the use power demand of electronic products is getting higher and higher, so higher requirements are put forward for the power of the battery. At present, the power of the battery is mainly improved by increasing the number of battery cells. For example, there are double-core batteries on the market at present.

[0003] However, since the side sealing edge of the battery cell in the related art exceeds the end of the battery cell in the length direction of the battery cell, the part of the side sealing edge exceeding the end of the battery cell in the length direction is bent towards the end of the battery cell, and an angle is formed on both sides of the end of the battery cell in the length direction. When the battery includes two battery cells, the end angles of the adjacent parts of the two battery cells will seriously interfere with the arrangement of the protection plate.

[0004] In the related art, a notch is formed in the protection plate to avoid the end angles of the adjacent parts of the two battery cells, however, this method inevitably affects the strength of the protection plate at the notch, and the risk of breaking of the protection plate is high.

[0005] Therefore, how to avoid the interference between the end angles of the adjacent parts of the two battery cells and the protection plate, and how to avoid affecting the structure of the protection plate, are problems that need to be solved by those skilled in the art. SUMMARY

[0006] Therefore, the purpose of the present application is to provide a battery including at least two battery cells, which can avoid the interference between the end angles of the adjacent parts of the two adjacent battery cells and the protection plate, and can avoid affecting the structure of the protection plate.

[0007] Another purpose of the present application is to provide a power consumption device including the above-mentioned battery, which can avoid the interference between the end angles of the adjacent parts of the two adjacent battery cells and the protection plate, and can avoid affecting the structure of the protection plate.

[0008] In order to achieve the above-mentioned purposes, the present application provides the following technical solutions:

[0009] A battery includes a protection plate and at least two battery cells, the battery cells are arranged side by side along the width direction of the battery cells.

[0010] The electric core comprises a first side wall at one end in a length direction, and a second side wall and a third side wall at both ends in a width direction, the first side wall protrudes from the second side wall and the third side wall along the length direction, a fourth side wall is connected between the first side wall and the second side wall and is inclined relative to the length direction and the width direction, and a fifth side wall is connected between the first side wall and the third side wall and is inclined relative to the length direction and the width direction; the fourth side wall is provided with a first sealing edge part, the fifth side wall is provided with a second sealing edge part, and the electric core comprises tabs extending from the first sealing edge part and the second sealing edge part respectively.

[0011] When all the electric cores are connected in parallel, the polarities of two adjacent tabs in two adjacent electric cores are the same and the two adjacent tabs are connected into a first conductive part; the protection plate is connected with the outermost tabs of the outermost electric cores and each first conductive part respectively.

[0012] When all the electric cores are connected in series, the polarities of two adjacent tabs in two adjacent electric cores are opposite and the two adjacent tabs are connected into a second conductive part; the protection plate is connected with the outermost tabs of the outermost electric cores respectively.

[0013] Optionally, the two tabs forming the first conductive part are stacked along the thickness direction of the electric core, the first conductive part comprises a first bending part and a first connecting part, and the first connecting part is used for connecting with the protection plate.

[0014] Optionally, the first conductive part is connected with the protection plate through a first adapter, the first adapter comprises an angled second connecting part and a third connecting part, the second connecting part is connected with the first connecting part, an end of the first connecting part away from the first bending part is provided with a flat edge parallel to the width direction, and the third connecting part is connected with the protection plate.

[0015] Optionally, the two tabs forming the second conductive part are stacked along the thickness direction of the electric core, the second conductive part comprises a second bending part and a first flat part and a second flat part connected with the second bending part respectively and parallel to the thickness direction.

[0016] Optionally, the protection plate and the outermost tabs of the outermost electric cores are connected through a second adapter, the second adapter comprises:

[0017] a connecting body;

[0018] a fourth connecting part connected with one end of the connecting body at an angle and connected with the protection plate;

[0019] The fifth connecting part is connected with the other end of the connecting body at an angle and connected with the outermost tab of the outermost battery cell.

[0020] Optionally, the first side wall is provided with a top sealing edge, the top sealing edge comprises a third bending part and a third flat part, the third flat part is parallel to the first side wall; the connecting body comprises:

[0021] The first connecting body is arranged between the third flat part and the first side wall, and the fourth connecting part is connected with the first connecting body at an angle;

[0022] The second connecting body is connected with the first connecting body and connected with the fourth side wall or the fifth side wall, the fifth connecting part comprises a fourth flat part connected with the second connecting body at an angle, a fifth flat part parallel to the fourth flat part along the thickness direction, and a fourth bending part connected between the fourth flat part and the fifth flat part.

[0023] Optionally, when all the battery cells are connected in parallel, the first conductive part is connected with the protection plate through a first adapter, and the outermost tabs of the outermost two battery cells are respectively connected with the protection plate through a second adapter, and the connection parts of the first adapter and the second adapter with the protection plate are in the same horizontal plane.

[0024] Optionally, the protection plate comprises a main plate and a sub-plate connected with the main plate, and the sub-plate is arranged in the tab slot formed by the adjacent two battery cells at the adjacent two tabs.

[0025] Optionally, the battery cell is provided with an insulating part at one end where the protection plate is located, and the insulating part comprises:

[0026] The first insulating part is arranged in the tab slot formed by the adjacent two battery cells at the adjacent two tabs;

[0027] The second insulating part is arranged in the tab slot formed at the fourth side wall of one of the two battery cells on the outermost side along the width direction, and the side of the second insulating part away from the first insulating part is flush and abuts against the second side wall;

[0028] The third insulating part is arranged in the tab slot formed at the fifth side wall of the other of the two battery cells on the outermost side along the width direction, and the side of the third insulating part away from the first insulating part is flush and abuts against the third side wall;

[0029] The first insulating part, the second insulating part and the third insulating part are connected in one body, and the side of the insulating part away from the battery cell is parallel to the end face of one end of the battery cell along the length direction.

[0030] An electrical device comprising any one of the above batteries.

[0031] The battery provided by the present invention has the following beneficial effects:

[0032] The battery cell with an obliquely angled tab is used so that the tab is located on the fourth side wall or the fifth side wall which is inclined relative to the length direction and the width direction of the battery cell respectively. This structure avoids the situation in which conventional battery cells in the related art form angles on both sides of the ends in the length direction thereof, thereby avoiding the problem of interference between the end angles of adjacent parts of two adjacent battery cells and the protective plate. Therefore, there is no need to change the structure of the protective plate to make the protective plate avoid or adapt to the end angles of conventional battery cells along their length direction in the related art. For example, there is no need to open a notch on the protective plate to make way for the end angles of conventional battery cells in the related art, nor is there a need to adopt a protective plate structure specially adapted to the end angles of conventional battery cells in the related art. Therefore, the battery with this structure can avoid affecting the strength of the protective plate, reduce the risk of breakage of the protective plate, and make the structure of the protective plate simple, thereby reducing the difficulty and cost of the manufacturing process of the protective plate.

[0033] Moreover, after the tabs are angled on both sides of the width direction at one end of the battery cell along the length direction, when all the battery cells are connected in parallel, the two adjacent tabs in two adjacent battery cells form a first conductive portion. Through the connection of a first conductive portion to the protection plate, the connection between the two adjacent tabs in two adjacent battery cells and the protection plate can be achieved. That is, compared to conventional battery cells in the related art, each first conductive portion is connected to the protection plate, which reduces one connection point between the tab and the protection plate, thereby reducing the number of nickel sheets on the protection plate used to connect to the tabs of the battery cells. When all the battery cells are connected in series, the two adjacent tabs in two adjacent battery cells form a second conductive portion. This second conductive portion does not need to be connected to the nickel sheet of the protection plate. In this case, the protection plate only needs two nickel sheets, which are connected to the outermost tabs of the two outermost battery cells along the width direction of the battery cells. Therefore, this battery can reduce the very large area occupied by the nickel sheet on the protection plate, increase the space for the layout of other components on the protection plate, and bring many conveniences to the layout of other components on the protection plate.

[0034] In addition, after the pole ears are angled on both sides of the width direction at one end of the battery cell in the length direction, the pole ears are avoided from being located on the first side wall at one end of the battery cell in the length direction. When the top seal edge located on the first side wall is bent, the problem of the pole ear glue exceeding the battery cell in the thickness direction of the battery cell is avoided. Therefore, it is beneficial to reduce the thickness of the battery cell, form a thinner battery cell, and is conducive to realizing the C-Pack structure on a thinner battery.

[0035] In addition, the battery structure can be applied to two or more arbitrary number of battery cells in parallel or series connection, so as to improve the capacity of the battery and the use power of the power consumption equipment using the battery, and meet the demand of the user for high power of the power consumption equipment.

[0036] The power consumption equipment provided by the application has the same beneficial effects as the battery. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the application or the related art, the following will briefly introduce the drawings needed to be used in the embodiments or the related art description. Obviously, the drawings in the following description only provide the embodiments of the application, and for those skilled in the art, other drawings can be obtained without creative labor based on the provided drawings.

[0038] Figure 1 The exploded view of the battery cell, the first adapter, the second adapter and the protection plate before assembly when the battery cells are connected in parallel according to the embodiment of the application;

[0039] Figure 2 The assembled front view of the battery cell, the second adapter and the protection plate when the battery cells are connected in series according to the embodiment of the application; Figure 1 The assembled front view of the battery cell, the second adapter and the protection plate when the battery cells are connected in series according to the embodiment of the application;

[0040] Figure 3 The exploded view of the battery cell, the second adapter and the protection plate before assembly when the battery cells are connected in series according to the embodiment of the application;

[0041] Figure 4 The assembled front view of the battery cell, the second adapter and the protection plate when the battery cells are connected in series according to the embodiment of the application; Figure 3 The assembled front view of the battery cell, the second adapter and the protection plate when the battery cells are connected in series according to the embodiment of the application;

[0042] Figure 5 The front view of the single battery cell;

[0043] Figure 6 The structure schematic view of the fourth side wall of one battery cell at the outermost side along the width direction of the battery cell and the first edge sealing part 141 provided with the adhesive;

[0044] Figure 7 The exploded view of the second adapter and the battery cell before assembly;

[0045] Figure 8 The structure schematic view of the second adapter and the battery cell after assembly;

[0046] Figure 9 The front view of the fifth connecting part and the tab after welding; Figure 8 The local enlarged schematic view of A in the fifth connecting part and the tab after welding;

[0047] Figure 10 The schematic view of the fifth connecting part and the tab after welding;

[0048] Figure 11 is a structure schematic diagram of the fifth connecting part and the structure after the tab is bent;

[0049] Figure 12 is a structure schematic diagram of the fifth connecting part and the structure after the tab is bent; Figure 11 is a local enlarged schematic diagram of B;

[0050] Figure 13 is a structure schematic diagram of another electrode group and another second connecting part after assembly;

[0051] Figure 14 is a planar schematic diagram of the second adapter after unfolding;

[0052] Figure 15 is a structure schematic diagram of the adjacent two tabs of the adjacent two electrode groups after stacking in the thickness direction of the electrode group;

[0053] Figure 16 is an exploded view of the adjacent two tabs of the adjacent two electrode groups after cutting out the flat side and before connecting with the first adapter;

[0054] Figure 17 is a structure schematic diagram of the adjacent two tabs of the adjacent two electrode groups after connecting with the first adapter;

[0055] Figure 18 is a structure schematic diagram of the first conductive part after bending;

[0056] Figure 19 is a structure schematic diagram of the first conductive part after bending; Figure 18 is a structure schematic diagram of the first conductive part after bending from another perspective;

[0057] Figure 20 is a structure schematic diagram of the first conductive part after bending from another perspective; Figure 19 is a structure schematic diagram of the electrode group and the protection plate after connection;

[0058] Figure 21 is a structure schematic diagram of the electrode group and the protection plate after connection; Figure 20 is a side view of the electrode group and the protection plate after connection;

[0059] Figure 22 is a structure schematic diagram of the protection plate in the electrode group after bending in the first direction; Figure 21 is a structure schematic diagram of the protection plate in the electrode group after bending in the direction opposite to the first direction;

[0060] Figure 23 is a structure schematic diagram of the protection plate in the electrode group after bending in the direction opposite to the first direction; Figure 22 is a structure schematic diagram of the protection plate in the electrode group after bending in the direction opposite to the first direction;

[0061] Figure 24 is a structure schematic diagram of the protection plate in the electrode group after bending in the direction opposite to the first direction from another perspective; Figure 23 is a structure schematic diagram of the protection plate in the electrode group after bending in the direction opposite to the first direction from another perspective;

[0062] Figure 25 is a structure schematic diagram of the adjacent two tabs of the adjacent two electrode groups when connected in series;

[0063] Figure 26 for Figure 25 A partial enlarged schematic diagram of center C;

[0064] Figure 27 A schematic diagram of the structure when the auxiliary plate of the protection plate extends into the tab slot formed at two adjacent tabs of two adjacent battery cells;

[0065] Figure 28 for Figure 27 A partial enlarged schematic diagram of D in the middle;

[0066] Figure 29 This is a schematic diagram of the structure when the auxiliary plate of the protection plate is not bent;

[0067] Figure 30 This is a structural diagram of the protection board's main board and sub-board connected via a flexible board;

[0068] Figure 31 This is a schematic diagram of the structure of the soft board after bending;

[0069] Figure 32 This is a schematic diagram of the structure when one end of the battery with a protective plate is provided with an insulating member;

[0070] Figure 33 This is an exploded view of the battery cell and protection board after assembly and before assembly of the insulation parts.

[0071] Reference numerals:

[0072] 1-battery cell; 11-first side wall; 111-top edge seal; 1111-third bent portion; 1112-third straight portion; 12-second side wall; 13-third side wall; 14-fourth side wall; 141-first edge seal; 15-fifth side wall; 151-second edge seal; 16-ear; 17-first conductive portion; 171-straight edge; 18-second conductive portion; 181-second bent portion; 182-first straight portion; 183-second straight portion; 2-protective plate; 2 1-main board; 22-sub-board; 23-flexible board; 3-first adapter; 31-second connecting part; 32-third connecting part; 4-second adapter; 41-connector; 411-first connecting body; 412-second connecting body; 42-fourth connecting part; 43-fifth connecting part; 431-fourth straight part, 432-fifth straight part; 433-fourth bent part; 5-insulating part; 51-first insulating part; 52-second insulating part; 53-third insulating part; 6-adhesive. DETAILED DESCRIPTION

[0073] Clearly, the embodiments described are only a part of the embodiments of the present application, but not all the embodiments. Based upon the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort should fall within the protection scope of the present application.

[0074] The core of the present application is to provide a battery comprising at least two battery cells, which can avoid the interference between the end folding angle of the adjacent part of the two adjacent battery cells and the protection plate, and meanwhile avoid the influence on the structure of the protection plate. Another core of the present application is to provide a power consumption device comprising the above battery, which can avoid the interference between the end folding angle of the adjacent part of the two adjacent battery cells and the protection plate, and meanwhile avoid the influence on the structure of the protection plate.

[0075] Please refer to Figures 1-6 The present application provides a battery comprising a protection plate 2 and at least two battery cells 1, which are arranged side by side along the width direction of the battery cells 1; as shown in Figure 6 The battery cell 1 comprises a first side wall 11 at one end in the length direction, and a second side wall 12 and a third side wall 13 at both ends in the width direction. In the length direction, the first side wall 11 protrudes from the second side wall 12 and the third side wall 13. A fourth side wall 14 is connected between the first side wall 11 and the second side wall 12, which is inclined relative to the length direction and the width direction. A fifth side wall 15 is connected between the first side wall 11 and the third side wall 13, which is inclined relative to the length direction and the width direction. The fourth side wall 14 is provided with a first sealing edge part 141, and the fifth side wall 15 is provided with a second sealing edge part 151. The battery cell 1 comprises a tab 16 extending from the first sealing edge part 141 and the second sealing edge part 151, respectively; as shown in Figure 1 and Figure 2 When all the battery cells 1 are connected in parallel, the polarities of the two adjacent tabs 16 in the two adjacent battery cells 1 are the same and are connected into a first conductive part 17. The protection plate 2 is connected with the outermost tabs 16 of the outermost battery cells 1 and each first conductive part 17, respectively; as shown in Figure 3 and Figure 4 When all the battery cells 1 are connected in series, the polarities of the two adjacent tabs 16 in the two adjacent battery cells 1 are opposite and are connected into a second conductive part 18. The protection plate 2 is connected with the outermost tabs 16 of the outermost battery cells 1, respectively.

[0076] It can be understood that the fourth side wall 14 is connected between the first side wall 11 and the second side wall 12, and becomes an inclined side wall with respect to the length direction and the width direction of the battery cell 1 respectively, and the fifth side wall 15 is connected between the first side wall 11 and the third side wall 13, and becomes an inclined side wall with respect to the length direction and the width direction of the battery cell 1 respectively, which is equivalent to forming two bevels on both sides of the width direction of one end of the battery cell 1 along the length direction, and the tab 16 extends from the first sealing edge portion 141 of the fourth side wall 14 and the second sealing edge portion 151 of the fifth side wall 15 respectively, so that the battery cell 1 becomes a structure of the bevel tab 16 (as shown in Figure 5 When all the battery cells 1 are arranged side by side along the width direction of the battery cell 1, a gap is formed between the fifth side wall 15 of one of any two adjacent battery cells 1 and the fourth side wall 14 of the other, and the two adjacent tabs 16 of the two adjacent battery cells 1 are located in the gap. When all the battery cells 1 are connected in parallel, the polarities of the two adjacent tabs 16 of the two adjacent battery cells 1 are the same, and the two adjacent tabs 16 of the two adjacent battery cells 1 are connected into a first conductive portion 17. Defining the number of battery cells 1 as N, N is a positive integer greater than or equal to 2, then N battery cells 1 form N-1 first conductive portions 17 in total. At this time, the protection plate 2 is connected with the outermost tabs 16 of the two outermost battery cells 1 along the width direction of the battery cell 1, and the protection plate 2 is also connected with the N-1 first conductive portions 17. When all the battery cells 1 are connected in series, the polarities of the two adjacent tabs 16 of the two adjacent battery cells 1 are opposite, and the two adjacent tabs 16 of the two adjacent battery cells 1 are connected into a second conductive portion 18. The number of battery cells 1 is N, and N battery cells 1 form N-1 second conductive portions 18 in total. In this case, the protection plate 2 is only connected with the outermost tabs 16 of the two outermost battery cells 1 along the width direction of the battery cell 1.

[0077] As can be seen, the battery cell 1 of the present application adopts the bevel tab 16, so that the tab 16 is located on the fourth side wall 14 or the fifth side wall 15 which is inclined with respect to the length direction and the width direction of the battery cell 1 respectively. This structure avoids the situation that the conventional battery cell 1 in the related art forms a fold angle on both sides of the end along the length direction, and thus avoids the problem that the end fold angles of the adjacent parts of the two adjacent battery cells 1 interfere with the protection plate 2, so that the structure of the protection plate 2 does not need to avoid or adapt to the end fold angle of the conventional battery cell 1 in the related art, for example, a gap does not need to be provided on the protection plate 2 to accommodate the end fold angle of the conventional battery cell 1 in the related art, and a special protection plate 2 structure that is specially adapted to the end fold angle of the conventional battery cell 1 in the related art is not needed. Therefore, the battery with this structure can avoid affecting the strength of the protection plate 2, reduce the risk of breaking of the protection plate 2, and make the structure of the protection plate 2 simple, thereby reducing the process difficulty and cost of the protection plate 2.

[0078] Moreover, after the two side slanting corners of one end of the battery cell 1 along the length direction are provided with the tab 16, when all the battery cells 1 are connected in parallel, the two adjacent tabs 16 in the two adjacent battery cells 1 form a first conductive part 17, and the connection of the two adjacent tabs 16 in the two adjacent battery cells 1 with the protection plate 2 can be realized through the connection of the first conductive part 17 with the protection plate 2, that is, compared with the conventional battery cell 1 in the related art, the connection of each first conductive part 17 with the protection plate 2 reduces one connection point of the tab 16 with the protection plate 2, thereby the number of the nickel sheets on the protection plate 2 for connecting with the tabs 16 of the battery cell 1 can be reduced, for example, when the number of the battery cells 1 is N, and the number of the tabs 16 is 2N, the number of the nickel sheets on the protection plate 2 required by the battery provided by the embodiment of the present application is N+1, while the number of the nickel sheets on the protection plate 2 required by the conventional parallel connection of N battery cells 1 in the related art is 2N, thus it can be seen that compared with the conventional parallel connection of N battery cells 1 in the related art, the protection plate 2 of the battery provided by the present application can reduce N-1 nickel sheets. When all the battery cells 1 are connected in series, the two adjacent tabs 16 in the two adjacent battery cells 1 form a second conductive part 18, and the second conductive part 18 does not need to be connected with the nickel sheet of the protection plate 2, at this time, the protection plate 2 only needs two nickel sheets to be connected with the outermost tabs 16 of the two outermost battery cells 1 along the width direction of the battery cell 1, that is, when the number of the battery cells 1 is N, the number of the nickel sheets on the protection plate 2 required by the battery provided by the embodiment of the present application is 2, while the number of the nickel sheets on the protection plate 2 required by the conventional series connection of N battery cells 1 in the related art is 2N, thus it can be seen that compared with the conventional series connection of N battery cells 1 in the related art, the protection plate 2 of the battery provided by the present application can reduce 2N-2 nickel sheets. Therefore, the battery provided by the embodiment of the present application can reduce the very large area occupied by the nickel sheets on the protection plate 2, increase the space for the layout of other components on the protection plate 2, and bring many conveniences for the layout of other components on the protection plate 2.

[0079] In addition, after the two side slanting corners of one end of the battery cell 1 along the length direction are provided with the tab 16, the tab 16 is avoided to be located on the first side wall 11 of one end of the battery cell 1 along the length direction, thereby when the top sealing edge 111 of the first side wall 11 is bent, the problem that the glue of the tab 16 exceeds the thickness direction of the battery cell 1 is avoided, thus it is beneficial to reduce the thickness of the battery cell 1, form a thinner battery cell 1, and is beneficial to realize the C-Pack structure on a thinner battery.

[0080] It should be noted that the drawings of the present application are only for the convenience of illustration, and only show the case that the battery includes two electric cores 1, the specific number of the electric core 1 is not limited in the embodiments of the present application, and the person skilled in the art can select a proper number of the electric core 1 according to the actual needs. As can be known from the above analysis, the battery structure provided by the embodiments of the present application can be applied to the case that two or more electric cores 1 are connected in parallel or in series, which is beneficial to improve the capacity of the battery and improve the use power of the power consumption equipment using the battery, so as to meet the user's demand for high power of the power consumption equipment.

[0081] In addition, in order to facilitate the connection between the protection plate 2 and the outermost tab 16 of the outermost electric core 1 along the width direction of the electric core 1, please refer to Figures 7-9 In some embodiments, the protection plate 2 and the outermost tab 16 of the outermost electric core 1 along the width direction of the electric core 1 are connected through a second adapter 4, the second adapter 4 includes a connecting body 41, a fourth connecting part 42 and a fifth connecting part 43, the fourth connecting part 42 is connected with one end of the connecting body 41 at an angle, the fifth connecting part 43 is connected with the other end of the connecting body 41 at an angle, and the fourth connecting part 42 is connected with the protection plate 2; the fifth connecting part 43 is connected with the outermost tab 16 of the outermost electric core 1.

[0082] That is, the second adapter 4 is arranged between the protection plate 2 and the outermost tab 16 of the outermost electric core 1 along the width direction of the electric core 1 in the present embodiment, and the connection between the protection plate 2 and the outermost tab 16 of the outermost electric core 1 along the width direction of the electric core 1 is realized by using the second adapter 4. The existence of the second adapter 4 is beneficial to the respective positions of the outermost tab 16 of the outermost electric core 1 along the width direction of the electric core 1 and the nickel sheet of the protection plate 2 used for connecting with the outermost tab 16. In the present embodiment, the fourth connecting part 42 and the fifth connecting part 43 are respectively connected with the two ends of the connecting body 41 at a certain angle, which is beneficial to the connection between the fourth connecting part 42 and the protection plate 2, and is beneficial to the connection between the fifth connecting part 43 and the outermost tab 16 of the outermost electric core 1.

[0083] It should be noted that the specific angle between the fourth connecting part 42 and the fifth connecting part 43 and the two ends of the connecting body 41 is not limited in the present embodiment, as long as it is convenient to realize the corresponding connection between the fourth connecting part 42 and the protection plate 2 and between the fifth connecting part 43 and the outermost tab 16 of the outermost electric core 1. For example, in some embodiments, the fourth connecting part 42 is connected with one end of the connecting body 41 at an angle of 90°, and the fifth connecting part 43 is connected with the other end of the connecting body 41 at an angle of 90°, that is, the second adapter 4 includes two L-shaped structural features. Further, as Figure 14As shown, in some embodiments, the second adapter 4 is in a Z-shaped structure after being flattened, the middle part of the Z-shaped structure is the connecting body 41, the fourth connecting part 42 and the fifth connecting part 43 are respectively connected with the two ends of the connecting body 41 perpendicularly, and the fourth connecting part 42 and the fifth connecting part 43 respectively extend in opposite directions, so as to form the Z-shaped structure after being flattened. Before the second adapter 4 is connected with the protection plate 2 and the outermost tab 16 of the outermost battery cell 1 respectively, the two ends of the Z-shaped structure are respectively bent to form two L-shaped structures, so that the fourth connecting part 42, the connecting body 41 and the fifth connecting part 43 are not coplanar.

[0084] Further, please refer to Figures 6-12 In some embodiments, the first side wall 11 is provided with a top sealing edge 111, the top sealing edge 111 comprises a third bending part 1111 and a third flat part 1112, the third flat part 1112 is parallel to the first side wall 11; the connecting body 41 comprises a first connecting body 411 and a second connecting body 412, the first connecting body 411 is arranged between the third flat part 1112 and the first side wall 11, the fourth connecting part 42 is connected with the first connecting body 411 at an angle; the second connecting body 412 is connected with the first connecting body 411, and the second connecting body 412 is connected with the fourth side wall 14 or the fifth side wall 15; the fifth connecting part 43 comprises a fourth flat part 431, a fourth bending part 433 and a fifth flat part 432, the fourth bending part 433 is connected between the fourth flat part 431 and the fifth flat part 432, the fourth flat part 431 is connected with the second connecting body 412 at an angle, and the fifth flat part 432 is parallel to the fourth flat part 431 in the thickness direction of the battery cell 1.

[0085] That is, in the present embodiment, during installation, the first connecting body 411 is inserted between the third flat part 1112 and the first side wall 11, so as to connect the fourth connecting part 42 with the protection plate 2; and the second connecting body 412 is connected with the fourth side wall 14 or the fifth side wall 15, so as to connect the fifth connecting part 43 with the outermost tab 16 of the outermost battery cell 1; in addition, as shown, Figure 12 As shown, the fourth flat part 431, the fourth bending part 433 and the fifth flat part 432 of the fifth connecting part 43 form a U-shaped structure, so that the fifth flat part 432 extends into the tab slot formed by the fourth side wall 14 or the fifth side wall 15 after being bent via the fourth bending part 433. It should be noted that after the fifth connecting part 43 is connected with the outermost tab 16 of the outermost battery cell 1 (in some embodiments, the fifth connecting part 43 is spot-welded with the outermost tab 16 of the outermost battery cell 1, as shown in the figure), the fourth flat part 431 and the fifth flat part 432 are parallel to the fourth side wall 14 or the fifth side wall 15. Figure 10As shown in FIG. 1, the fifth connecting part 43 is bent together with the outermost tab 16 of the outermost cell 1 to form a U-shaped structure. The U-shaped structure of the fifth connecting part 43 is conducive to avoiding the fifth connecting part 43 protruding from the first sealing edge 141 of the fourth side wall 14 or protruding from the second sealing edge 151 of the fifth side wall 15, thereby avoiding affecting the length or width of the battery.

[0086] It can be understood that, along the width direction of the cell 1, one of the two outermost tabs 16 of the outermost two cells 1 is located on the fourth side wall 14 of one of the outermost cells 1, and the other is located on the fifth side wall 15 of the other outermost cell 1. As shown in FIG. 1, the two outermost tabs 16 of the outermost two cells 1 are connected to the fourth side wall 14 and the fifth side wall 15 of the outermost two cells 1 through the second adapter 4. Figure 11 and Figure 13 As shown in FIG. 1, in some embodiments, the two outermost tabs 16 of the outermost two cells 1 are respectively connected to the fourth side wall 14 of one of the outermost cells 1 and the fifth side wall 15 of the other outermost cell 1 through two identical second adapters 4. When the two identical second adapters 4 are respectively connected to the two outermost tabs 16, they are symmetrically distributed.

[0087] In addition, the specific connection mode of the second connecting body 412 to the fourth side wall 14 or the fifth side wall 15 is not limited in this embodiment, as long as the connection of the second connecting body 412 to the fourth side wall 14 or the fifth side wall 15 can be achieved. In some embodiments, the second connecting body 412 is connected to the fourth side wall 14 or the fifth side wall 15 through an adhesive 6. In some embodiments, the adhesive 6 is double-sided tape.

[0088] In order to improve the reliability of the connection, in some embodiments, the fourth flat part 431 of the fifth connecting part 43 is connected to the first sealing edge 141 of the fourth side wall 14 through an adhesive 6 or connected to the second sealing edge 151 of the fifth side wall 15 through an adhesive 6. In some embodiments, the adhesive 6 on the fourth side wall 14 and the adhesive 6 on the first sealing edge 141 form an L-shaped structure. Similarly, the adhesive 6 on the fifth side wall 15 and the adhesive 6 on the second sealing edge 151 form an L-shaped structure. As shown in FIG. 1, the adhesive 6 on the fourth side wall 14 and the adhesive 6 on the first sealing edge 141 form an L-shaped structure. Figure 6 and Figure 7 As shown in FIG. 1, the adhesive 6 is arranged on the fourth side wall 14 and the first sealing edge 141 before the second adapter 4 is connected to the fourth side wall 14. Similarly, the adhesive 6 is arranged on the fifth side wall 15 and the second sealing edge 151 before the second adapter 4 is connected to the fifth side wall 15.

[0089] In addition, please refer to Figures 15-18When all the battery cells 1 are connected in parallel, in order to facilitate the connection of the first conductive part 17 and the protection plate 2, in some embodiments, the two tabs 16 forming the first conductive part 17 are stacked along the thickness direction of the battery cell 1, the first conductive part 17 includes a first bending part and a first connecting part, and the first connecting part is used to connect with the protection plate 2.

[0090] That is, when all the battery cells 1 are connected in parallel, after two adjacent battery cells 1 are arranged side by side along the width direction of the battery cell 1, the two adjacent tabs 16 of the two adjacent battery cells 1 are stacked together along the thickness direction of the battery cell 1 (as shown in Figure 15 ), and the first bending part and the first connecting part are formed by bending the two tabs 16 stacked together in a predetermined direction, so that the first connecting part is located at a position convenient for connecting with the protection plate 2. It can be understood that the bending direction of the two tabs 16 stacked together is towards the side where the tab slot formed by the two adjacent battery cells 1 at the two adjacent tabs 16 is located, so that after the two tabs 16 stacked together are bent, the first conductive part 17 as a whole does not exceed the thickness of the battery cell 1 along the thickness direction of the battery cell 1. In addition, the bending angle of the two tabs 16 stacked together is not limited in this embodiment, and in some embodiments, the bending angle of the two tabs 16 stacked together is 90°.

[0091] Further, as shown in Figure 16 and Figure 17 , in order to facilitate the connection of the first connecting part and the protection plate 2, in some embodiments, the first conductive part 17 is connected with the protection plate 2 through a first adapter 3, the first adapter 3 includes an angled second connecting part 31 and a third connecting part 32, the second connecting part 31 is connected with the first connecting part, the end of the first connecting part away from the first bending part is provided with a flat edge 171 parallel to the width direction of the battery cell 1, and the third connecting part 32 is connected with the protection plate 2.

[0092] That is, the first connecting piece 3 is arranged between the first conductive part 17 and the protection plate 2, and the first connecting piece 3 is used to connect the first conductive part 17 and the protection plate 2. The first connecting piece 3 is beneficial to the first conductive part 17 and the protection plate 2 to be respectively located at appropriate positions for connecting the first conductive part 17. In the embodiment, the second connecting part 31 and the third connecting part 32 are at a certain angle, which is beneficial to the second connecting part 31 and the third connecting part 32 to be respectively connected with the first connecting part and the protection plate 2. For example, in some embodiments, the second connecting part 31 and the third connecting part 32 are at an angle of 90°, that is, the second connecting part 31 and the third connecting part 32 form an L-shaped structure. Of course, in other embodiments, the second connecting part 31 and the third connecting part 32 can also be at other angle values. In addition, the end of the first connecting part away from the first bending part is provided with a flat edge 171 parallel to the width direction of the battery cell 1. The flat edge 171 can avoid interference between the sharp corner structure and the first connecting piece 3 arranged at an angle, and facilitate the cooperation and connection between the first connecting part and the second connecting part 31. In some embodiments, after the adjacent two tabs 16 of the adjacent two battery cells 1 are stacked together along the thickness direction of the battery cell 1, the two tabs 16 stacked together are cut to form a flat edge 171 without a sharp corner (as shown in Figure 16 ), then the first connecting part is connected with the second connecting part 31 of the first connecting piece 3 (as shown in Figure 17 ), after the connection, the first conductive part 17 is bent to form a first bending part on the first conductive part 17. At this time, the first connecting part drives the first connecting piece 3 to overturn as a whole, so that the third connecting part 32 faces a suitable direction (as shown in Figure 18 ), so as to facilitate the connection between the third connecting part 32 and the protection plate 2.

[0093] In addition, when all the battery cells 1 are connected in parallel, in order to facilitate the connection between the protection plate 2 and the outermost tab 16 and the connection between the protection plate 2 and the first conductive part 17, in some embodiments, when all the battery cells 1 are connected in parallel, the first conductive part 17 is connected with the protection plate 2 through the first connecting piece 3, the outermost tabs 16 of the outermost two battery cells 1 are respectively connected with the protection plate 2 through the second connecting piece 4, and the connecting parts of the first connecting piece 3 and the second connecting piece 4 connected with the protection plate 2 are located in the same horizontal plane, as shown in Figure 19 .

[0094] That is, in the embodiment, after the first adapter 3 is connected with the first conductive part 17, and the two second adapters 4 are respectively connected with the outermost tab 16 of the outermost two battery cells 1, the third connecting part 32 of the first adapter 3 and the fourth connecting part 42 of the two second adapters 4 are in the same horizontal plane. It should be noted that the number of the first adapter 3 is the same as the number of the first conductive part 17. When the number of the first conductive part 17 is one, the number of the first adapter 3 is one. When the number of the first conductive part 17 is at least two, the number of the first adapter 3 is also at least two. The limitation of the embodiment is convenient for the respective first adapter 3 and the two second adapters 4 to be connected with the protection plate 2, and convenient for the protection plate 2 to be tightly attached to the end of the battery cell 1 by bending after the first adapter 3 and the second adapter 4 are connected with the protection plate 2. For example, in some embodiments, after the protection plate 2 is connected with the first adapter 3 and the two second adapters 4 (as shown in Figure 20 ), the protection plate 2 is first bent 90° in the first direction (as shown in Figure 21 ), and then the protection plate 2 is bent 90° in the direction opposite to the first direction (as shown in Figure 22 ), and finally the protection plate 2 is tightly attached to the end of the battery cell 1 (as shown in Figure 23 and Figure 24 ).

[0095] In addition, as shown in Figure 25 and Figure 26 , when all the battery cells 1 are connected in series, in order to avoid interference between the second conductive part 18 and the protection plate 2, in some embodiments, the two tabs 16 forming the second conductive part 18 are stacked along the thickness direction of the battery cell 1. The second conductive part 18 includes a second bending part 181, and a first flat part 182 and a second flat part 183 connected with the second bending part 181 respectively and parallel along the thickness direction.

[0096] That is, when all the battery cells 1 are connected in series, after the two adjacent battery cells 1 are arranged side by side along the width direction of the battery cell 1, the two adjacent tabs 16 of the two adjacent battery cells 1 are stacked together along the thickness direction of the battery cell 1, and the first bending part, the first flat part 182 and the second flat part 183 are formed by bending the two tabs 16 stacked together. The first bending part is connected between the first flat part 182 and the second flat part 183, and the first flat part 182 and the second flat part 183 are parallel along the thickness direction of the battery cell 1. It can be understood that the bending direction of the two tabs 16 stacked together is towards the side where the tab slot is formed at the two adjacent tabs 16 of the two adjacent battery cells 1, so that the second flat part 183 after bending extends into the tab slot, which is beneficial to avoid interference between the second conductive part 18 and the protection plate 2.

[0097] In addition, as shown in Figure 27 and Figure 28As shown in the drawings, in some embodiments, the protection plate 2 comprises a main plate 21 and a sub-plate 22 connected with the main plate 21, and the sub-plate 22 is arranged in the tab slot formed by the adjacent two tab ears 16 of the adjacent two battery cells 1. That is, when all the battery cells 1 are connected in parallel, the sub-plate 22 is arranged in one-to-one correspondence with the first conductive part 17, the sub-plate 22 is parallel to the corresponding first conductive part 17 along the thickness direction of the battery cell 1, and the sub-plate 22 does not protrude from the side of the battery cell 1 along the thickness direction thereof. When all the battery cells 1 are connected in series, the sub-plate 22 is arranged in one-to-one correspondence with the second conductive part 18, the sub-plate 22 is parallel to the corresponding second conductive part 18 along the thickness direction of the battery cell 1, and the sub-plate 22 does not protrude from the side of the battery cell 1 along the thickness direction thereof.

[0098] That is, in the present embodiment, the protection plate 2 adopts the structure of combination of the main plate 21 and the sub-plate 22, and the sub-plate 22 extends into the tab slot formed by the adjacent two tab ears 16 of the adjacent two battery cells 1, which can make full use of the space at the end of the battery cell 1 and increase the area of the layout region of the components on the protection plate 2.

[0099] It should be noted that the specific connection mode of the main plate 21 and the sub-plate 22 is not limited in the present embodiment, as long as the main plate 21 and the sub-plate 22 can be connected and the installation position of the sub-plate 22 can be ensured.

[0100] As shown in the drawings, Figures 29-31 in some embodiments, the main plate 21 and the sub-plate 22 are connected through a soft plate 23. It can be understood that the soft plate 23 is convenient to bend, and thus, after the soft plate 23 is connected with the main plate 21 and the sub-plate 22 respectively, the sub-plate 22 extends into the tab slot formed by the adjacent two tab ears 16 of the adjacent two battery cells 1 by bending the soft plate 23, which facilitates the assembly of the protection plate 2.

[0101] In addition, as shown in the drawings, Figure 32 and Figure 33 in some embodiments, the battery cell 1 is provided with an insulating piece 5 at one end where the protection plate 2 is located, and the insulating piece 5 comprises a first insulating part 51, a second insulating part 52 and a third insulating part 53, the first insulating part 51 is arranged in the tab slot formed by the adjacent two tab ears 16 of the adjacent two battery cells 1; the second insulating part 52 is arranged in the tab slot formed at the fourth side wall 14 of one of the two battery cells 1 at the outermost side in the width direction, and the side of the second insulating part 52 away from the first insulating part 51 is flush and abuts with the second side wall 12; the third insulating part 53 is arranged in the tab slot formed at the fifth side wall 15 of the other of the two battery cells 1 at the outermost side in the width direction, and the side of the third insulating part 53 away from the first insulating part 51 is flush and abuts with the third side wall 13; the first insulating part 51, the second insulating part 52 and the third insulating part 53 are connected in one body, and the side of the insulating piece 5 away from the battery cell 1 is parallel to the end face of one end of the battery cell 1 along the length direction.

[0102] That is, the embodiment sets the insulating piece 5 at the end where the protection plate 2 of the battery is located, and the insulating piece 5 plays a good insulation role, and the insulating piece 5 is filled in the pole lug slot of the battery cell 1 at the end where the protection plate 2 is located, has a certain buffering effect, and can improve the structural stability.

[0103] It should be noted that the specific material and forming method of the insulating piece 5 are not limited in the embodiment, and in some embodiments, the protection plate 2 is installed, and then glue is injected at the end of the battery cell 1 where the protection plate 2 is located to form the insulating piece 5. The process is simple and convenient.

[0104] In addition to the above battery, the embodiment of the application also provides a power consumption device comprising the battery disclosed in the above embodiment. The specific type of the power consumption device is not limited in the embodiment, for example, the power consumption device includes but is not limited to a mobile phone, a notebook computer, a tablet computer, an electric vehicle, an electric toy, a spacecraft, etc. The structure of other parts of the power consumption device can refer to related technologies, and will not be described here.

[0105] The focus of the embodiment is that the power consumption device comprises the battery disclosed in any one of the above embodiments, so the power consumption device at least comprises the beneficial effects of the above battery.

[0106] It should also be noted that in the specification, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations.

[0107] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0108] The battery and the power consumption device provided by the application are described in detail above. The principle and implementation of the application are described by applying specific examples. The above embodiment is only used to help understand the method and core idea of the application. It should be pointed out that for ordinary skilled in the art, without departing from the principle of the application, the application can be improved and modified, and these improvements and modifications also fall within the protection scope of the application.

Claims

1. A battery, characterized in that: It comprises a protective plate (2) and at least two battery cells (1), wherein the battery cells (1) are arranged side by side along the width direction thereof; The battery cell (1) comprises a first side wall (11) located at one end in the longitudinal direction thereof and a second side wall (12) and a third side wall (13) located at both ends in the width direction; along the longitudinal direction, the first side wall (11) protrudes from the second side wall (12) and the third side wall (13); a fourth side wall (14) inclined relative to both the longitudinal direction and the width direction is connected between the first side wall (11) and the second side wall (12); a fifth side wall (15) inclined relative to both the longitudinal direction and the width direction is connected between the first side wall (11) and the third side wall (13); the fourth side wall (14) is provided with a first edge sealing portion (141), and the fifth side wall (15) is provided with a second edge sealing portion (151); the battery cell (1) comprises tabs (16) extending from the first edge sealing portion (141) and the second edge sealing portion (151), respectively; When all the battery cells (1) are connected in parallel, the polarities of the two adjacent tabs (16) in two adjacent battery cells (1) are the same and are connected to form a first conductive portion (17); the protection plate (2) is respectively connected to the outermost tabs (16) of the two outermost battery cells (1) and each of the first conductive portions (17); When all the battery cells (1) are connected in series, the polarities of the two adjacent tabs (16) in two adjacent battery cells (1) are opposite and connected to form a second conductive portion (18); the protection plate (2) is respectively connected to the outermost tabs (16) of the two outermost battery cells (1); The protection plate (2) comprises a main plate (21) and a sub-plate (22) connected to the main plate (21), wherein the sub-plate (22) is arranged in a tab slot formed at two adjacent tabs (16) of two adjacent battery cells (1).

2. The battery of claim 1, wherein, The two tabs (16) forming the first conductive portion (17) are stacked along the thickness direction of the battery cell (1), and the first conductive portion (17) comprises a first bending portion and a first connecting portion, and the first connecting portion is used to connect to the protection plate (2).

3. The battery of claim 2, wherein, The first conductive portion (17) is connected to the protective plate (2) via a first adapter (3), the first adapter (3) comprising an angled second connection portion (31) and a third connection portion (32), the second connection portion (31) being connected to the first connection portion, the end of the first connection portion away from the first bending portion being provided with a straight edge (171) parallel to the width direction, and the third connection portion (32) being connected to the protective plate (2).

4. The battery of claim 1, wherein, The two tabs (16) forming the second conductive portion (18) are stacked along the thickness direction of the battery cell (1), and the second conductive portion (18) includes a second bent portion (181) and a first straight portion (182) and a second straight portion (183) respectively connected to the second bent portion (181) and parallel to the thickness direction.

5. The battery of claim 1, wherein, The protection plate (2) and the outermost tab (16) of the outermost battery cell (1) are connected by a second adapter (4), and the second adapter (4) comprises: a connecting body (41); a fourth connecting part (42) connected to one end of the connecting body (41) at an angle and connected to the protection plate (2); a fifth connecting part (43) connected to the other end of the connecting body (41) at an angle and connected to the outermost tab (16) of the outermost battery cell (1).

6. The battery of claim 5, wherein, The first side wall (11) is provided with a top sealing edge (111), and the top sealing edge (111) comprises a third bending part (1111) and a third flat part (1112) parallel to the first side wall (11); the connecting body (41) comprises: a first connecting body (411) arranged between the third flat part (1112) and the first side wall (11), and the fourth connecting part (42) is connected to the first connecting body (411) at an angle; a second connecting body (412) connected to the first connecting body (411) and connected to the fourth side wall (14) or the fifth side wall (15), and the fifth connecting part (43) comprises a fourth flat part (431) connected to the second connecting body (412) at an angle, a fifth flat part (432) parallel to the fourth flat part (431) in the thickness direction, and a fourth bending part (433) connected between the fourth flat part (431) and the fifth flat part (432).

7. The battery of claim 1, wherein, When all the battery cells (1) are connected in parallel, the first conductive part (17) is connected to the protection plate (2) through a first adapter (3), and the outermost tabs (16) of the outermost two battery cells (1) are respectively connected to the protection plate (2) through a second adapter (4), and the connecting parts of the first adapter (3) and the second adapter (4) connected to the protection plate (2) are in the same horizontal plane.

8. The battery according to any one of claims 1 to 7, characterized in that The battery cell (1) is provided with an insulating part (5) at one end of the protection plate (2), and the insulating part (5) comprises: a first insulating part (51) arranged in the tab slot formed at the adjacent two tabs (16) of the adjacent two battery cells (1); a second insulating part (52) arranged in the tab slot formed at the fourth side wall (14) of one of the two battery cells (1) on the outermost side in the width direction, and the side of the second insulating part (52) away from the first insulating part (51) is flush and abuts against the second side wall (12); a third insulating part (53) arranged in the tab slot formed at the fifth side wall (15) of the other of the two battery cells (1) on the outermost side in the width direction, and the side of the third insulating part (53) away from the first insulating part (51) is flush and abuts against the third side wall (13); The first insulation part (51), the second insulation part (52) and the third insulation part (53) are connected in one body, and a side of the insulation piece (5) away from the battery cell (1) is parallel to an end face of one end of the battery cell (1) along the length direction.

9. An electric device, characterized by A battery comprising the battery cell of any one of claims 1-8.

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