Battery and electronic device

Abstract

The utility model discloses a battery and electronic equipment, the battery includes: a plurality of electrical cores, the plurality of electrical cores are connected in series, each of the plurality of electrical cores includes: a positive pole connecting portion and a negative pole connecting portion, in the two adjacent electrical cores connected in series, the positive pole connecting portion of one electrical core is arranged adjacent to the negative pole connecting portion of the other electrical core, and the negative pole connecting portion of the other electrical core is arranged adjacent to the positive pole connecting portion of the other electrical core. And in the two adjacent battery cells which are connected in series, the positive electrode connecting part of one battery cell and the negative electrode connecting part of the other battery cell are electrically connected to the same first conductive sheet. According to the battery metering chip, the positive electrode connecting part of one battery cell and the negative electrode connecting part of the other battery cell in the two adjacent battery cells connected in series are close to each other and are connected to the same first conducting strip, so that a diversion path can be shortened, line impedance and voltage drop are reduced, heat generation is reduced, and the sampling precision of the battery metering chip is improved; the battery cruising ability can be improved, and the battery cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery and an electronic device. Background Art

[0002] In the related art, when multiple battery cells are connected in series, the positive and negative electrodes of each battery cell are first electrically connected to the corresponding conductive sheets, and the conductive sheets are then electrically connected through the copper foil routing on the battery protection board. The number of conductive sheets is large and the cost is high. Moreover, in this connection method, when the power of the battery pack is greater, the current is greater, and the required copper foil width is wider, which will increase the cost of the battery protection board and reduce the capacity of the battery cell, thereby leading to increased battery costs and reduced battery life. In addition, the voltage sampling point of the battery metering chip is usually selected at the middle position where the two first conductive sheets connect to the copper foil. Due to the thickness of the copper foil of the battery protection board (usually around 70um), the voltage drop on the line will be relatively large, resulting in low sampling accuracy and large sampling deviation of the battery metering chip, thereby affecting the charging and discharging strategy of the battery metering chip and issuing erroneous instructions. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a battery that can shorten the flow path of the battery cells in series, reduce the impedance and voltage drop of the series circuit, thereby reducing the generation of heat, and is more conducive to the realization of high-power charging and discharging and improving the sampling accuracy of the battery metering chip. In addition, the space of the battery cell can be increased to increase the capacity of the battery cell, thereby improving the battery life and reducing the production cost of the battery.

[0004] The utility model further provides an electronic device.

[0005] According to the battery of the utility model, it includes: a plurality of battery cells, the plurality of battery cells are connected in series, and the plurality of battery cells each include: a positive electrode connection part and a negative electrode connection part, and in two adjacent battery cells connected in series, the positive electrode connection part of one of the battery cells is arranged adjacent to the negative electrode connection part of the other battery cell; a first conductive sheet, in two adjacent battery cells connected in series, the positive electrode connection part of one of the battery cells and the negative electrode connection part of the other battery cell are electrically connected to the same first conductive sheet.

[0006] According to the battery of the utility model, by arranging the positive electrode connection part of one of the two adjacent battery cells connected in series and the negative electrode connection part of the other battery cell close to each other and electrically connecting them to the same first conductive sheet, the current is conducted from the first conductive sheet without passing through the copper foil, which can shorten the conduction path of the battery cells in series, reduce the impedance and voltage drop of the series circuit, thereby reducing the heat generation, and is more conducive to the realization of high-power charging and discharging and improving the sampling accuracy of the battery metering chip. In addition, there is no need for a wider copper foil on the battery protection board, so that the width of the battery protection board can be narrowed, thereby reducing the production cost, and at the same time, the space of the battery cell can be increased to increase the capacity of the battery cell, thereby improving the battery life, and there is no need to add other layers of copper foil on the battery protection board to achieve overcurrent, thus avoiding the conductive hole, reducing the design difficulty and production cost of the battery protection board, thereby reducing the production cost of the battery.

[0007] In some examples of the present invention, the battery cell has a first surface and a second surface, the first surface and the second surface are arranged opposite to each other along a first direction, the negative electrode connection portion is arranged adjacent to the second surface, and the positive electrode connection portion is arranged adjacent to the first surface.

[0008] In some examples of the present invention, the positive electrode connecting portion includes: a positive electrode ear and a temperature sensing component, an installation space is left between the positive electrode ear and the first surface, the temperature sensing component is arranged in the installation space, the temperature sensing component is electrically connected to the positive electrode ear, and one end of the temperature sensing component away from the positive electrode ear is electrically connected to the first conductive sheet; the negative electrode connecting portion includes: a negative electrode ear, and the negative electrode ear is arranged adjacent to the second surface.

[0009] In some examples of the present invention, the minimum distance between the positive electrode ear and the plane where the first surface is located is a, and the minimum distance between the negative electrode ear and the plane where the second surface is located is b, and the value ranges of a and b are: 12mm≤a≤15mm, 3mm≤b≤6mm.

[0010] In some examples of the present invention, the battery cell is a hard shell battery cell, the hard shell battery cell includes a hard shell and a pole core arranged in the hard shell, the negative electrode connection part includes: a second conductive sheet, the hard shell has a first surface and a second surface, the second conductive sheet is electrically connected to the hard shell, and the second conductive sheet is arranged adjacent to the second surface; the positive electrode connection part includes: a rivet and a temperature sensing component, the rivet is arranged at the hard shell, the temperature sensing component is electrically connected to the rivet, and the temperature sensing component is arranged adjacent to the first surface.

[0011] In some examples of the present invention, the battery further includes: a first insulating member and a second insulating member, wherein the first insulating member is connected to the rivet, the first insulating member is wrapped around the periphery of the rivet column, and the second insulating member is arranged between the temperature sensing component and the hard shell.

[0012] In some examples of the utility model, the hard shell includes: a hard shell body and a cover plate, the cover plate is covered on the hard shell body, the second conductive sheet is electrically connected to the cover plate, an operating hole is provided on the cover plate, and a sealing cover is provided on the operating hole.

[0013] In some examples of the utility model, the battery also includes: a battery protection board, multiple first conductive sheets are electrically connected to the battery protection board, and the positive electrode connection parts and the negative electrode connection parts of multiple battery cells are electrically connected to the battery protection board through the first conductive sheets.

[0014] In some examples of the present invention, the battery further includes: a battery connector, wherein the battery connector is electrically connected to the battery protection board.

[0015] The electronic device according to the utility model comprises: the battery mentioned above.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a schematic diagram of a first structure of a battery according to the first embodiment of the utility model;

[0019] Figure 2 is a schematic diagram of the structure of the battery cell at a first angle when the battery is the first embodiment;

[0020] Figure 3 is a schematic diagram of the structure of the battery cell at a second angle when the battery is the first embodiment;

[0021] Figure 4 is a schematic diagram of a second structure of a battery according to the first embodiment of the utility model;

[0022] Figure 5 is a schematic diagram of a partial structure of a battery cell at a first angle when the battery is the second embodiment;

[0023] Figure 6 is a schematic diagram of a partial structure of a battery cell at a second angle when the battery is a second embodiment;

[0024] Figure 7 It is a schematic diagram of the structure of the temperature sensing component;

[0025] Figure 8 is a schematic structural diagram of a first embodiment of a temperature sensing component;

[0026] Fig. 9 is a schematic structural diagram of a second embodiment of a temperature sensing component;

[0027] Fig.10 It is a schematic structural diagram of a third embodiment of a temperature sensing component.

[0028] Reference numerals:

[0029] 1.Battery;

[0030] 10. Battery cell; 11. Positive electrode connection part; 111. Positive electrode ear; 112. Temperature sensing component; 113. Rivet; 114. Temperature sensing component; 12. Negative electrode connection part; 121. Hard shell; 1211. Hard shell body; 1212. Cover plate; 1213. Working hole; 1214. Sealing cover; 122. Second conductive sheet; 123. Negative electrode ear; 13. First surface; 14. Second surface; 20. First conductive sheet; 30. First insulating member; 40. Second insulating member; 50. Battery protection board; 60. Battery connector. DETAILED DESCRIPTION

[0031] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0032] Reference below Figure 1-Figure 10 A battery 1 according to an embodiment of the utility model is described. The battery 1 is usually installed on an electronic device to supply power to the electronic device so that the electronic device can work normally.

[0033] like Figure 1 and Figure 4 As shown, the battery 1 according to the embodiment of the utility model includes: a plurality of battery cells 10 and a first conductive sheet 20. The battery cell 10 is the main part of the battery 1, which is mainly used to store and release electrical energy. There are a plurality of battery cells 10, which can increase the storage capacity of the battery 1, thereby increasing the endurance of the battery 1. The first conductive sheet 20 mainly plays a conductive role and can be used to transfer current. The material of the first conductive sheet 20 can be a nickel substrate or a copper substrate, and of course it can also be other suitable conductive substrates. In addition, the battery 1 also includes prior art components such as a rubber frame, a rubber cover and a label, which are not described in this application.

[0034] like Figure 1 and Figure 4As shown, multiple battery cells 10 are connected in series, and each of the multiple battery cells 10 includes: a positive electrode connection portion 11 and a negative electrode connection portion 12. In two adjacent battery cells 10 connected in series, the positive electrode connection portion 11 of one battery cell 10 is arranged adjacent to the negative electrode connection portion 12 of the other battery cell 10. In other words, the multiple battery cells 10 are connected in series, so that the electricity in the multiple battery cells 10 can be superimposed, thereby increasing the storage capacity of the battery 1, and further increasing the endurance of the battery 1.

[0035] like Figure 1 and Figure 4 As shown, the multiple battery cells 10 all include: a positive electrode connection part 11 and a negative electrode connection part 12. Both the positive electrode connection part 11 and the negative electrode connection part 12 can play the role of electrical connection. During discharge, the current flows out from the positive electrode connection part 11 of the battery cell 10 and flows into the negative electrode connection part 12 of the battery cell 10. Among the two adjacent battery cells 10 connected in series, the positive electrode connection part 11 of one battery cell 10 and the negative electrode connection part 12 of the other battery cell 10 are electrically connected to the corresponding first conductive sheet 20 on the battery protection board 50, which can supply power to the electronic components on the battery protection board 50 so that the corresponding components can work normally.

[0036] It should be noted that if you want to reduce the internal resistance in the battery protection board circuit, you usually need to set a certain number of vias according to the current size and the copper thickness to achieve parallel connection of multiple layers of copper foil, but the parallel copper foil and vias will occupy the space of other layers, increasing the difficulty of wiring in other layers. Moreover, the vias will not only increase the design difficulty and process difficulty of the battery protection board 50, but also increase the manufacturing cost of the battery protection board 50, which will eventually be passed on to the battery 1 product, resulting in increased costs.

[0037] Therefore, if Figure 1 and Figure 4 As shown, in two adjacent battery cells 10 connected in series, the positive electrode connecting portion 11 of one battery cell 10 is arranged adjacent to the negative electrode connecting portion 12 of the other battery cell 10 .

[0038] Since multiple battery cells 10 are connected in series, the positive electrode connection portion 11 of one battery cell 10 is arranged adjacent to the negative electrode connection portion 12 of another battery cell 10. This arrangement is more reasonable and can shorten the distance between the positive electrode connection portion 11 of one battery cell 10 and the negative electrode connection portion 12 of another battery cell 10, thereby facilitating the cooperation between the positive electrode connection portion 11 of one battery cell 10 and the negative electrode connection portion 12 of another battery cell 10.

[0039] like Figure 1 and Figure 4 As shown, in two adjacent battery cells 10 connected in series, the positive electrode connection portion 11 of one battery cell 10 and the negative electrode connection portion 12 of the other battery cell 10 are electrically connected to the same first conductive sheet 20 .

[0040] Specifically, when the battery 1 is discharged, for two adjacent battery cells 10 connected in series, the discharge current first flows through the positive electrode connection portion 11 of one of the battery cells 10, and then flows through the first conductive sheet 20. After being conducted by the first conductive sheet 20, the discharge current flows through the negative electrode connection portion 12 of the other battery cell 10. When the battery is charged, the current flows in the reverse direction. In this way, multiple battery cells 10 can be connected in series. Since the positive electrode connection portion 11 of one battery cell 10 is adjacent to the negative electrode connection portion 12 of the other battery cell 10, the use area of ​​the first conductive sheet 20 can be reduced, and the cost of the first conductive sheet 20 can be reduced.

[0041] Thus, by arranging the positive electrode connection part 11 of one of the two battery cells 10 connected in series and the negative electrode connection part 12 of the other battery cell 10 close to each other and electrically connecting them to the same first conductive sheet 20, the current is conducted from the first conductive sheet 20 without passing through the copper foil on the battery protection board 50. This can shorten the conduction path of the battery cells 10 in series, reduce the impedance and voltage drop of the series circuit, thereby reducing heat generation, and is more conducive to the realization of high-power charging and discharging and improving the sampling accuracy of the battery metering chip. In addition, there is no need for a wider copper foil on the battery protection board 50, so that the width of the battery protection board 50 can be narrowed, thereby increasing the space of the battery cell 10 to increase the capacity of the battery cell 10, thereby improving the endurance of the battery 1, and there is no need to add other layers of copper foil on the battery protection board 50 to achieve overcurrent, thus avoiding the conductive hole, reducing the design difficulty and production cost of the battery protection board 50, thereby reducing the production cost of the battery 1.

[0042] In addition, if Figure 2 and Figure 3 As shown, the battery cell 10 has a first surface 13 and a second surface 14, the first surface 13 and the second surface 14 are arranged opposite to each other, the negative electrode connection portion 12 is arranged adjacent to the second surface 14, and the positive electrode connection portion 11 is arranged adjacent to the first surface 13. The soft-pack battery cell 10 has the advantages of good safety, light weight, large capacity, etc., and is more flexible in design. The battery cell 10 can be a soft-pack battery cell 10.

[0043] Among them, the first surface 13 and the second surface 14 can both be the side surfaces of the battery cell 10, and the first surface 13 and the second surface 14 are arranged opposite to each other along the first direction, that is, the first surface 13 and the second surface 14 are two opposite side surfaces of the battery cell 10. The negative electrode connection part 12 is arranged adjacent to the second surface 14, that is, there is a gap between the negative electrode connection part 12 and the second surface 14. It should be noted that due to the limitation of processing conditions, it is difficult for the negative electrode connection part 12 to be arranged completely close to the second surface 14, that is, the interval between the negative electrode connection part 12 and the second surface 14 cannot be 0mm. The positive electrode connection part 11 is arranged adjacent to the first surface 13, so that the distance between the positive electrode connection part 11 and the first surface 13 can be shortened, and then the distance between the positive electrode connection part 11 of one battery cell 10 and the negative electrode connection part 12 of another battery cell 10 connected in series can be shortened, so that the use area of ​​the first conductive sheet 20 can be reduced, the cost can be reduced, and the impedance and voltage drop of the series circuit can be further reduced, so that the heat generated inside the battery 1 can be reduced, and the voltage sampling accuracy of the battery metering chip can be improved.

[0044] In addition, if Figure 1-Figure 4 As shown, the positive electrode connection part 11 includes: a positive electrode ear 111 and a temperature sensing component 112, an installation space is reserved between the positive electrode ear 111 and the first surface 13, the temperature sensing component 112 is arranged in the installation space, the temperature sensing component 112 is electrically connected to the positive electrode ear 111, and one end of the temperature sensing component 112 away from the positive electrode ear 111 is electrically connected to the first conductive sheet 20. The negative electrode connection part 12 includes a negative electrode ear 123, which is arranged adjacent to the second surface 14.

[0045] The positive electrode ear 111 is electrically connected to the temperature sensing component 112, and the temperature sensing component 112 mainly plays the role of protecting the battery 1. When the current flowing through the temperature sensing component 112 is too large or the temperature of the temperature sensing component 112 is too high and reaches a threshold, the temperature sensing component 112 will act to cut off the current loop. When the temperature of the temperature sensing component 112 decreases and returns to the reset threshold, the temperature sensing component 112 will return to normal and open the current loop again, thereby protecting the battery 1.

[0046] After the temperature sensing component 112 is set in the installation space, the positive electrode connection part 11 as a whole will be adjacent to the first surface 13. In addition, the temperature sensing component 112 is electrically connected to the positive electrode ear 111, and the end of the temperature sensing component 112 away from the positive electrode ear 111 is electrically connected to the first conductive sheet 20 on the battery protection board 50, so that the temperature sensing component 112 can be connected in series to the battery cell 10, that is, the temperature sensing component 112 is connected in series to the current circulation loop to realize the temperature protection function of the temperature sensing component 112. The temperature sensing component 112 is electrically connected to the positive electrode ear 111 of the battery cell 10. In this way, the current on the positive electrode ear 111 can be transmitted to the first conductive sheet through the temperature sensing component 112, and then can be transmitted to the negative electrode ear of another battery cell 10 to realize the circulation of current. The end of the temperature sensing component 112 away from the positive electrode ear 111 is electrically connected to the first conductive sheet 20 on the battery protection board 50. This arrangement is more reasonable and can make the position of the temperature sensing component 112 closer to the first conductive sheet 20, thereby facilitating the connection between the temperature sensing component 112 and the first conductive sheet 20 and reducing the use area of ​​the first conductive sheet 20.

[0047] It should be noted that if Figure 7 As shown, the temperature sensing element 114 is a sheet structure. In actual production, the temperature sensing component 112 is usually composed of the temperature sensing element 114 and a conductive sheet, which can be in three structural forms, for example: Figure 8 As shown, the temperature sensing component 112 may be composed of a sheet-shaped temperature sensing member 114 and a conductive sheet, wherein the conductive sheet is electrically connected to the temperature sensing member 114 by laser welding; Fig. 9 As shown, the temperature sensing component 112 may be composed of a sheet-shaped temperature sensing member 114 and two conductive sheets, wherein the two conductive sheets are electrically connected to the temperature sensing member 114 by laser welding; Fig.10 As shown, or the temperature sensing component 112 can be an L-shaped integrated structure formed by a sheet-shaped temperature sensing element 114 and a conductive sheet. The above three structures are all L-shaped structures, which are easy to connect. Of course, the temperature sensing component 112 can also be other suitable structures.

[0048] The negative electrode ear 123 is the main part of the negative electrode connection part 12, and is mainly used to be electrically connected to the first conductive sheet 20 on the battery protection plate 50. It should be noted that due to the limitation of processing conditions, it is difficult for the negative electrode connection part 12 to be completely close to the second surface 14, so there will be a gap between the negative electrode ear 123 and the second surface 14. In order to make the positive electrode connection part 11 of one battery cell 10 and the negative electrode connection part 12 of the other battery cell 10 close to each other between two adjacent battery cells 10 connected in series, the negative electrode connection part 12 and the negative electrode ear 123 need to be arranged as close to the second surface 14 as possible.

[0049] Furthermore, if Figure 3 As shown, the minimum distance between the positive ear 111 and the plane where the first surface 13 is located is a, and the minimum distance between the negative ear 123 and the plane where the second surface 14 is located is b, and the value ranges of a and b are: 12mm≤a≤15mm, 3mm≤b≤6mm. In other words, the minimum distance between the positive ear 111 and the plane where the first surface 13 is located needs to be within a suitable range and needs to be greater than or equal to 12mm, because the temperature sensing component 112 is arranged between the positive ear 111 and the first surface 13, so that sufficient installation space can be reserved for the temperature sensing component 112, which is convenient for the installation and setting of the temperature sensing component 112. At the same time, it needs to be less than or equal to 15mm, so that the temperature sensing component 112 can be as far away from one end of the positive ear 111 as possible under the condition that the temperature sensing component 112 is installed, and is arranged close to the second surface 14 of another battery cell 10 connected in series with it, so that the distance between the negative electrode connection part 12 of the other battery cell 10 can be shortened.

[0050] Similarly, the minimum distance between the negative electrode ear 123 and the plane where the second surface 14 is located also needs to be within a suitable range, and needs to be greater than or equal to 3 mm. It should be noted that, under the limitation of processing conditions, it is difficult for the negative electrode ear 123 to be arranged in contact with the second surface 14, so there will be a gap between the negative electrode ear 123 and the second surface 14, and the minimum distance of the gap can be 3 mm. Of course, it also needs to be less than or equal to 6 mm, so that the negative electrode ear 123 can be arranged as close to the second surface 14 as possible, reducing the distance between the negative electrode ear 123 and the second surface 14, thereby reducing the distance between the negative electrode ear 123 of the other battery cell 10 and the positive electrode connection portion 11 of one of the battery cells 10 between two adjacent battery cells 10 connected in series. It should be noted that the greater the distance between the negative electrode ear 123 and the second surface 14, the larger the size of the first conductive sheet 20 shared by the positive electrode connection portion 11 of one battery cell 10 and the negative electrode connection portion 12 of the other battery cell 10 between the two adjacent battery cells connected in series, and the material cost of the first conductive sheet 20 will increase.

[0051] The battery 1 consisting of four strings of battery cells 10 is described in detail below. Of course, the battery 1 can also be composed of other suitable numbers of strings.

[0052] like Figure 1As shown, the battery 1 is a "field-shaped" structure, wherein the negative electrode connection portion 12 of the upper left corner battery cell 10 is electrically connected to a separate first conductive sheet 20, and the dimensions of the first conductive sheet 20 are generally: 5mm-8mm in length, 2.5mm-4mm in width, and 0.25mm-0.5mm in thickness. The positive electrode connection portion 11 of the upper left corner battery cell 10 and the negative electrode connection portion 12 of the adjacent upper right corner battery cell 10 are electrically connected to a first conductive sheet 20, and the dimensions of the first conductive sheet 20 are generally: 14mm-20mm in length, 2.5mm-4mm in width, and 0.25mm-0.5mm in thickness. The positive electrode connection part 11 of the battery cell 10 in the upper right corner and the negative electrode connection part 12 of the battery cell 10 in the adjacent lower right corner are electrically connected to a first conductive sheet 20, and the dimensions of the first conductive sheet 20 are generally: 10mm-20mm in length, 5mm-8mm in width, and 0.25mm-0.5mm in thickness. The positive electrode connection part 11 of the battery cell 10 in the lower right corner and the negative electrode connection part 12 of the battery cell 10 in the adjacent lower left corner are electrically connected to a first conductive sheet 20, and the dimensions of the first conductive sheet 20 are generally: 14mm-20mm in length, 2.5mm-4mm in width, and 0.25mm-0.5mm in thickness. The positive electrode connection part 11 of the battery cell 10 in the lower left corner is electrically connected to a first conductive sheet 20 alone, and the dimensions of the first conductive sheet 20 are generally: 5mm-8mm in length, 2.5mm-4mm in width, and 0.25mm-0.5mm in thickness. Of course, the first conductive sheet 20 may also be of other suitable sizes.

[0053] like Figure 4As shown, the battery 1 is a "straight" structure, wherein the negative electrode connection portion 12 of the rightmost battery cell 10 is electrically connected to a first conductive sheet 20 alone, and the dimensions of the first conductive sheet 20 are generally: 5mm-8mm in length, 2.5mm-4mm in width, and 0.25mm-0.5mm in thickness. The positive electrode connection portion 11 of the rightmost battery cell 10 and the negative electrode connection portion 12 of the second battery cell 10 adjacent to the right are electrically connected to a first conductive sheet 20 together, and the dimensions of the first conductive sheet 20 are generally: 14mm-20mm in length, 2.5mm-4mm in width, and 0.25mm-0.5mm in thickness. The positive electrode connection part 11 of the second battery cell 10 on the right and the negative electrode connection part 12 of the adjacent third battery cell 10 on the right are electrically connected to a first conductive sheet 20, and the dimensions of the first conductive sheet 20 are generally: 14mm-20mm in length, 2.5mm-4mm in width, and 0.25mm-0.5mm in thickness. The positive electrode connection part 11 of the third battery cell 10 on the right and the negative electrode connection part 12 of the adjacent leftmost battery cell 10 are electrically connected to a first conductive sheet 20, and the dimensions of the first conductive sheet 20 are generally: 14mm-20mm in length, 2.5mm-4mm in width, and 0.25mm-0.5mm in thickness. The positive electrode connection part 11 of the leftmost battery cell 10 is electrically connected to a first conductive sheet 20 alone, and the dimensions of the first conductive sheet 20 are generally: 5mm-8mm in length, 2.5mm-4mm in width, and 0.25mm-0.5mm in thickness. Of course, the first conductive sheet 20 may also be of other suitable sizes.

[0054] As an optional embodiment, Figure 5 and Figure 6 As shown, the battery cell 10 can be a hard shell battery cell 10, and the hard shell can be a steel shell or an aluminum shell with conductive properties, or can be a conductive hard shell of other suitable structures. The hard shell battery cell 10 includes a hard shell 121 and a pole core arranged in the hard shell 121, and the negative electrode connection part 12 includes: a second conductive sheet 122, the hard shell 121 has a first surface 13 and a second surface 14, the second conductive sheet 122 is electrically connected to the hard shell 121, and the second conductive sheet 122 is arranged adjacent to the second surface 14, and the positive electrode connection part 11 includes: a rivet 113 and a temperature sensing component 112, the rivet 113 is arranged at the hard shell 121, the temperature sensing component 112 is electrically connected to the rivet 113, and the temperature sensing component 112 is arranged adjacent to the first surface 13. The hard shell battery cell 10 generally has the advantages of strong pressure resistance and strong impact resistance.

[0055] Among them, the hard shell 121 is the outer shell of the battery cell 10, which mainly plays the role of installation and electrical connection, and the second conductive sheet 122 mainly plays the role of conduction. The hard shell 121 has a first surface 13 and a second surface 14. It should be noted that the first surface 13 and the second surface 14 can be located at two opposite sides of the hard shell 121 along the first direction, and the hard shell 121 is a full negative polarity. The second conductive sheet 122 is electrically connected to the hard shell 121, so that the second conductive sheet 122 can also have a negative polarity.

[0056] Moreover, the second conductive sheet 122 is arranged adjacent to the second surface 14. Since the hard shell 121 is of full negative polarity, the second conductive sheet 122 can be electrically connected to any part of the hard shell 121, and the second conductive sheet 122 can be flexibly arranged according to the optimal layout. Therefore, the second conductive sheet 122 can be arranged adjacent to the second surface 14, so that the distance between the second conductive sheet 122 and the second surface 14 can be reduced as much as possible, so that in two adjacent battery cells 10 connected in series, the distance between the second conductive sheet 122 and the positive electrode connecting part 11 of one of the battery cells 10 can be reduced, and then the material of the second conductive sheet 122 can be reduced, thereby reducing the cost.

[0057] The rivet 113 is the main part of the positive electrode connection part 11, and the rivet 113 extends from the inside of the hard shell battery cell 10. It should be noted that the rivet 113 is of positive polarity, and the temperature sensing component 112 and the rivet 113 are electrically connected, and the temperature sensing component 112 and the first conductive sheet 20 on the battery protection plate 50 are electrically connected, so that the temperature sensing component 112 can be connected in series to the battery 1, so that the battery 1 can be protected. Moreover, the temperature sensing component 112 is arranged adjacent to the first surface 13, so that the distance between the temperature sensing component 112 and the first surface 13 can be shortened as much as possible, so that between two adjacent battery cells 10 connected in series, the distance between the temperature sensing component 112 of one battery cell 10 and the hard shell 121 of the other battery cell 10 can be reduced, thereby reducing the material of the first conductive sheet 20 and reducing the cost.

[0058] Furthermore, if Figure 5 and Figure 6As shown, the battery 1 further includes: a first insulating member 30 and a second insulating member 40, the first insulating member 30 is connected to the rivet 113, the first insulating member 30 is wrapped around the periphery of the rivet 113 column, and the second insulating member 40 is arranged between the temperature sensing component 112 and the hard shell 121. The first insulating member 30 and the second insulating member 40 can both play an insulating role. The first insulating member 30 is connected to the rivet 113. Specifically, the first insulating member 30 and the rivet 113 can be integrated by injection molding, and the first insulating member 30 is wrapped around the periphery of the rivet 113 column. In this way, not only the rivet 113 and the hard shell 121 can be isolated to avoid a short circuit between the rivet 113 and the hard shell 121, but also the rivet 113 and the electrolyte in the hard shell battery 10 can be isolated to avoid a short circuit between the rivet 113 and the electrolyte in the hard shell battery 10, so that the battery 1 can work normally. Similarly, the second insulating member 40 is disposed between the temperature sensing component 112 and the hard shell 121, so that the temperature sensing component 112 and the hard shell 121 can be isolated, thereby avoiding a short circuit between the temperature sensing component 112 and the shell, so that the battery 1 can work normally.

[0059] Specifically, Figure 5 and Figure 6 As shown, the hard shell 121 includes: a hard shell body 1211 and a cover plate 1212, the cover plate 1212 is covered on the hard shell body 1211, the second conductive sheet 122 is electrically connected to the cover plate 1212, and an operation hole 1213 is provided on the cover plate 1212, and a sealing cover 1214 is provided on the operation hole 1213. Among them, the hard shell body 1211 is the main part of the hard shell 121, and the cover plate 1212 mainly plays the role of sealing. The cover plate 1212 is covered on the hard shell body 1211, so that the cover plate 1212 can seal the hard shell body 1211, thereby forming the hard shell 121.

[0060] The second conductive sheet 122 is electrically connected to the cover plate 1212, so that the second conductive sheet 122 can be fixed, so that the second conductive sheet 122 is more securely and stably arranged, and the second conductive sheet 122 can better play the role of conducting electricity. Specifically, when the battery is discharged, the current flows out from the positive electrode connection part 11 of the battery cell 10, and flows into the second conductive sheet 122 after passing through the corresponding components, and then flows back to the battery cell 10 through the cover plate 1212 from the second conductive sheet 122. The operation hole 1213 mainly plays a filling role, and the electrolyte required for the battery cell 10 can be filled into the hard shell body 1211 through the operation hole 1213. The sealing cover 1214 mainly plays a sealing role. The sealing cover 1214 is placed on the working hole 1213 so that the sealing cover 1214 can seal the working hole 1213. After the corresponding substance is filled into the hard shell body 1211, the working hole 1213 can be sealed, thereby ensuring the sealing of the hard shell body 1211.

[0061] In addition, if Figure 1 and Figure 4 As shown, the battery 1 also includes a battery protection board 50, a plurality of first conductive sheets 20 are electrically connected to the battery protection board 50, and the positive electrode connection parts 11 and the negative electrode connection parts 12 of the plurality of battery cells 10 are electrically connected to the plurality of first conductive sheets 20 on the battery protection board 50. Among them, the battery protection board 50 is mainly a carrier for realizing protection functions, communication functions and management functions. The plurality of first conductive sheets 20 are electrically connected to the protection board 50, and the positive electrode connection parts 11 and the negative electrode connection parts 12 of the plurality of battery cells 10 are electrically connected to the plurality of first conductive sheets 20 on the battery protection board 50. In this way, not only can the series connection setting between the plurality of battery cells 10 be realized, but also the plurality of battery cells 10 and the electronic components on the battery protection board 50 can be electrically connected to form a protection circuit of the battery 1 to ensure the normal operation of the battery 1. If an accident occurs, the battery protection board 50 will shut down the charge and discharge circuit to ensure the safety of the battery 1.

[0062] In addition, if Figure 1 and Figure 4 As shown, the battery 1 also includes a battery connector 60, which is electrically connected to the battery protection board 50. The battery connector 60 mainly serves as a connection, and can be used to connect the controller of the electronic device, serving as a bridge for the battery 1 to discharge the electronic device and the electronic device to charge the battery 1. The battery connector 60 is electrically connected to the battery protection board 50, so that the battery connector 60 can be connected to the battery 1, so that the battery 1 and the controller of the electronic device can be connected, and the electronic device can work better.

[0063] The electronic device according to the utility model comprises: the battery 1 described in the above embodiment. The electronic device may be a laptop computer, a tablet computer, a mobile phone, or other consumer electronic products.

[0064] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0065] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In the description of the present utility model, "plurality" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. In the description of the present utility model, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0067] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery (1), characterized in that: include: A plurality of battery cells (10), wherein the plurality of battery cells (10) are connected in series, and each of the plurality of battery cells (10) comprises: a positive electrode connection portion (11) and a negative electrode connection portion (12); in two adjacent battery cells (10) connected in series, the positive electrode connection portion (11) of one of the battery cells (10) is arranged adjacent to the negative electrode connection portion (12) of the other battery cell (10); A first conductive sheet (20), wherein, in two adjacent battery cells (10) connected in series, the positive electrode connection portion (11) of one of the battery cells (10) and the negative electrode connection portion (12) of the other battery cell (10) are electrically connected to the same first conductive sheet (20); The battery cell (10) comprises a first surface (13) and a second surface (14), the first surface (13) and the second surface (14) are arranged opposite to each other along a first direction, the negative electrode connecting portion (12) is arranged adjacent to the second surface (14), and the positive electrode connecting portion (11) is arranged adjacent to the first surface (13); The positive electrode connecting portion (11) comprises: a positive electrode ear (111) and a temperature sensing component (112); an installation space is reserved between the positive electrode ear (111) and the first surface (13); the temperature sensing component (112) is arranged in the installation space; the temperature sensing component (112) is electrically connected to the positive electrode ear (111); and one end of the temperature sensing component (112) away from the positive electrode ear (111) is electrically connected to the first conductive sheet (20); The negative electrode connecting portion (12) comprises a negative electrode ear (123), and the negative electrode ear (123) is arranged adjacent to the second surface (14).

2. The battery (1) according to claim 1, characterized in that The minimum distance between the positive electrode ear (111) and the plane where the first surface (13) is located is a, and the minimum distance between the negative electrode ear (123) and the plane where the second surface (14) is located is b, and the value ranges of a and b are: 12mm≤a≤15mm, 3mm≤b≤6mm.

3. The battery (1) according to claim 1, characterized in that The battery cell (10) is a hard shell battery cell, the hard shell battery cell comprising a hard shell (121) and a pole core arranged in the hard shell (121), the negative electrode connecting portion (12) comprising: a second conductive sheet (122), the hard shell (121) having a first surface (13) and a second surface (14), the second conductive sheet (122) being electrically connected to the hard shell (121), and the second conductive sheet (122) being arranged adjacent to the second surface (14); The positive electrode connecting portion (11) comprises: a rivet (113) and a temperature sensing component (112); the rivet (113) is arranged at the hard shell (121); the temperature sensing component (112) is electrically connected to the rivet (113); and the temperature sensing component (112) is arranged adjacent to the first surface (13).

4. The battery (1) according to claim 3, characterized in that Also includes: A first insulating member (30) and a second insulating member (40), wherein the first insulating member (30) is connected to the rivet (113), the first insulating member (30) is wrapped around the periphery of the rivet (113) column, and the second insulating member (40) is arranged between the temperature sensing component (112) and the hard shell (121).

5. The battery (1) according to claim 3, characterized in that The hard shell (121) comprises: a hard shell body (1211) and a cover plate (1212), wherein the cover plate (1212) is covered on the hard shell body (1211), the second conductive sheet (122) is electrically connected to the cover plate (1212), an operating hole (1213) is provided on the cover plate (1212), and a sealing cover (1214) is provided on the operating hole (1213).

6. The battery (1) according to claim 1, characterized in that Also includes: A battery protection board (50), a plurality of the first conductive sheets (20) being electrically connected to the battery protection board (50), and the positive electrode connecting parts (11) and the negative electrode connecting parts (12) of the plurality of battery cells (10) being electrically connected to the battery protection board (50) via the first conductive sheets (20).

7. The battery (1) according to claim 6, characterized in that Also includes: A battery connector (60), the battery connector (60) is electrically connected to the battery protection board (50).

8. An electronic device, characterized in that: include: The battery (1) according to any one of claims 1 to 7.

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