Battery pack and electric equipment

Abstract

The utility model relates to a battery pack and electric equipment, the battery pack comprises a battery cell unit and a plurality of first electric connection structures, the battery cell unit at least comprises two first battery cell columns, and each first battery cell column comprises a plurality of first battery cells arranged along a first direction; in the first direction, a plurality of first battery cells in one first battery cell column and a plurality of battery cells in another adjacent first battery cell column are correspondingly arranged, a plurality of battery cell pairs are constructed, and each battery cell pair comprises two first battery cells located in a different first battery cell column; the first electric connection structure comprises a first electric connection piece and a second electric connection piece, the two first battery cells in each battery cell pair are connected in series through the first electric connection piece, and the two adjacent battery cell pairs are suitable for being connected in series through the second electric connection piece. Through the design, the positive electrode ends and the negative electrode ends of the battery cell units with the odd-numbered columns of battery cells can be positioned at the same end of the battery pack, so that the arrangement of the electrodes of the battery pack is facilitated.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular, to a battery pack and an electrical device. Background Art

[0002] The battery pack is a device used to provide energy to electrical equipment. It is the core component of electrical equipment and an important direction for future energy transformation. In the related art, when there are multiple columns of cells in multiple cell units on the battery pack, when the number of cell columns is an odd number, the positive and negative electrodes of a single cell unit will be located at different ends of the battery pack, which is inconvenient for the installation and arrangement of the electrodes in the battery pack. Utility Model Content

[0003] The purpose of the present disclosure is to provide a battery pack and an electrical device to at least partially solve the technical problems existing in the related art.

[0004] In order to achieve the above object, the present disclosure provides a battery pack, comprising a battery cell unit and a plurality of first electrical connection structures, wherein the battery cell unit comprises at least two first battery cell columns, each of which comprises a plurality of first battery cells arranged along a first direction;

[0005] In the first direction, a plurality of first battery cells in one of the first battery cell columns are arranged correspondingly to a plurality of first battery cells in another adjacent first battery cell column, and a plurality of battery cell pairs are constructed, each battery cell pair including two first battery cells located in different first battery cell columns;

[0006] The first electrical connection structure includes a first electrical connection member and a second electrical connection member;

[0007] Two first battery cells in each battery cell pair are connected in series via the first electrical connector, and two adjacent battery cell pairs are connected in series via the second electrical connector.

[0008] Optionally, the positive electrodes and negative electrodes of the first battery cells are arranged along a first direction respectively, and in the first direction, the positive electrodes of the two first battery cells in each battery cell pair are located on the same side;

[0009] The positive electrode of one first battery cell of each battery cell pair is electrically connected to the negative electrode of another first battery cell through the first electrical connector.

[0010] Optionally, the first electrical connector includes a first section, a second section and a third section;

[0011] The first section and the third section are connected to opposite ends of the second section respectively;

[0012] The first section and the third section extend from opposite ends of the second section in the first direction in opposite directions;

[0013] The first section is connected to the positive electrode of a first battery cell in the battery cell pair, and the third section is electrically connected to the negative electrode of the other first battery cell in the battery cell pair.

[0014] Optionally, an extension direction of the second segment intersects with the first direction.

[0015] Optionally, the positive electrode and the negative electrode of the first battery cell are arranged along a first direction respectively, and in the first direction, the positive electrodes of the two battery cells in each battery cell pair are located on the same side;

[0016] The positive electrode of one of the two adjacent battery cell pairs is electrically connected to the negative electrode of the other one through the second electrical connector.

[0017] Optionally, the second electrical connector includes a fourth section, a fifth section and a sixth section;

[0018] The fourth section and the sixth section are respectively connected to opposite ends of the fifth section;

[0019] The fourth segment and the sixth segment extend from opposite ends of the fifth segment in opposite directions in the first direction respectively;

[0020] The fourth section is connected to the positive electrode of one of the two adjacent battery cell pairs, and the sixth section is connected to the negative electrode of the other of the two adjacent battery cell pairs.

[0021] Optionally, an extension direction of the fifth segment intersects with the first direction.

[0022] Optionally, the battery cell unit further includes at least one column of second battery cells;

[0023] The second battery cell column and the first battery cell column are arranged along a second direction, and the at least one second battery cell column is connected in series with the first battery cell column, and the second direction is perpendicular to the first direction;

[0024] The second battery cell array includes a plurality of second battery cells arranged along the first direction, and the positive electrodes and negative electrodes of the second battery cells are arranged along the first direction respectively;

[0025] A plurality of the second battery cells in the same second battery cell column are connected in series.

[0026] Optionally, the battery pack further includes a plurality of third electrical connectors, and two adjacent second battery cells in the same second battery cell column are connected in series via the third electrical connectors.

[0027] Optionally, the third electrical connector is a strip extending along the first direction, and two ends of the third electrical connector are respectively electrically connected to two adjacent second battery cells in the same second battery cell column.

[0028] Optionally, the battery pack further comprises a plurality of fourth electrical connectors;

[0029] Two second battery cells located at the ends of two adjacent second battery cell columns in the first direction are connected in series through the fourth electrical connector.

[0030] Optionally, the battery pack further comprises a fifth electrical connector;

[0031] The first cell and the second cell located at the end of the first cell column and the second cell column adjacent thereto in the first direction are connected in series via the fifth electrical connector.

[0032] Optionally, the fifth electrical connector is configured as a strip extending along the second direction.

[0033] Optionally, the number of the battery cell units is at least one, the number of the first battery cell columns in each battery cell unit is two, the number of the second battery cell columns is an odd number, and the positive terminal and the negative terminal of the battery cell unit are located on the same side of the first direction.

[0034] Optionally, the number of the battery cell units is at least two.

[0035] Optionally, the two battery cell units are arranged along the second direction, and the second direction is perpendicular to the first direction.

[0036] Optionally, the battery cell unit further includes at least one second battery cell column, and the second battery cell column includes a plurality of second battery cells arranged along the first direction;

[0037] The second battery cell column and the first battery cell column are arranged along a second direction, and the second battery cell column and the first battery cell column are connected in series, and the second direction is perpendicular to the first direction;

[0038] The second electrical connector includes a plurality of connecting segments, and the second battery cells are connected in series between the second electrical connectors.

[0039] According to a second aspect of the present disclosure, an electrical device includes a device body and the battery pack, wherein the battery pack is installed on the device body and is used to supply power to the device body.

[0040] Through the above technical scheme, adjacent first battery cells in adjacent first battery cell columns construct a battery cell pair, and the two first battery cells in the battery cell pair are connected in series, and the adjacent battery cell pairs are connected in series, so that the starting point and the end point of the current direction of the two columns of first battery cells are located at the two ends of the length direction of the battery pack. Then, the two columns of first battery cells are connected in series with other battery cell columns, so that the positive and negative ends of the battery cell units in the odd-numbered battery cell columns can also be located at the same end of the battery pack, which is convenient for the arrangement of the battery pack electrodes.

[0041] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0043] Figure 1 is a schematic structural diagram of a battery cell unit in a battery pack provided by an exemplary embodiment of the present disclosure, wherein two battery cell units are shown;

[0044] Figure 2 is a schematic diagram of the structure of a battery cell unit in a battery pack provided by an exemplary embodiment of the present disclosure, wherein a dividing line between two battery cell units is schematically shown by a dotted line, and a first battery cell column and a second battery cell column are shown by a dotted frame;

[0045] Figure 3 yes Figure 2 A magnified schematic diagram of part A;

[0046] Figure 4 yes Figure 2 The enlarged schematic diagram of part A in the figure shows the circuit paths of the two first battery cell columns with dotted lines;

[0047] Figure 5 It is a schematic diagram of the circuit path of a single battery cell, with the positive and negative electrodes at the same end;

[0048] Figure 6 It is a schematic diagram of the structure of a battery cell unit in a battery pack provided by another exemplary embodiment of the present disclosure, wherein two battery cell units are shown.

[0049] Description of Reference Numerals

[0050] 10. battery cell unit, 11. first battery cell row, 111. first battery cell, 112. battery cell pair, 12. second battery cell row, 121. second battery cell, 20. first electrical connection structure, 21. first electrical connector, 211. first section, 212. second section, 213. third section, 22. second electrical connector, 221. fourth section, 222. fifth section, 223. sixth section, 224. connection section; 30. third electrical connector, 40. fourth electrical connector, 50. fifth electrical connector. DETAILED DESCRIPTION

[0051] The specific embodiments of the present disclosure are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure.

[0052] In the description of the present disclosure, it should be understood that the terms "upper" and "lower" and the like indicating the orientation or positional relationship are defined based on the drawing directions shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, and a specific orientation structure and operation, and therefore cannot be understood as a limitation of the present disclosure. The terms "inside" and "outside" refer to the inside and outside of the corresponding structural contours. "First direction" and "second direction" can be referred to in Figure 1 , Figure 2 and Figure 6 The markings shown in the figure, where "first direction" may refer to the length direction of the battery pack, and "second direction" may refer to the width direction of the battery pack. In addition, it should be noted that the terms such as "first" and "second" are used to distinguish one element from another element, and do not have order and importance. In addition, in the description with reference to the drawings, the same mark in different drawings represents the same element.

[0053] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0054] When the number of cell columns included in the battery pack is an odd number, the positive terminal and the negative terminal of the battery pack cannot be located at the same end of the battery pack when the cell columns are connected in series, resulting in inconvenient electrode arrangement of the battery pack.

[0055] In view of this, if Figures 1 to 6 As shown, the present disclosure provides a battery pack, including a battery cell unit 10 and a plurality of first electrical connection structures 20, the battery cell unit 10 includes at least two first battery cell columns 11, each first battery cell column 11 includes a plurality of first battery cells 111 arranged along a first direction; in the first direction, the plurality of first battery cells 111 in one first battery cell column 11 are arranged correspondingly to the plurality of first battery cells 111 in another adjacent first battery cell column 11, and a plurality of battery cell pairs 112 are constructed, each battery cell pair 112 includes two first battery cells 111 located in different first battery cell columns 11, that is, two first battery cells 111 arranged side by side in the first direction in two adjacent first battery cell columns 11 construct a battery cell pair, the first electrical connection structure 20 includes a first electrical connector 21 and a second electrical connector 22, the two first battery cells 111 in each battery cell pair 112 are connected in series through the first electrical connector 21, and the two adjacent battery cell pairs 112 are suitable for being connected in series through the second electrical connector 22.

[0056] Among them, the battery cell unit 10 can be formed by connecting a plurality of battery cells in series, and all the battery cells in a battery cell unit 10 can be connected in series, and the battery cell unit 10 has a positive electrode and a negative electrode connected to the distribution box. A battery cell pair 112 includes two first battery cells 111 arranged along the second direction (such as the width direction of the battery pack), and the function of the first electrical connection structure 20 is to connect the two first battery cells 111 in the battery cell pair 112 in series, so that the positive and negative electrodes of the two first battery cells 111 arranged along the second direction after being connected in series are at both ends in the first direction, so that the positive and negative electrodes of adjacent battery cell columns after being connected in series are at both ends in the first direction.

[0057] Since the battery cells in a single battery cell column have a circuit channel along the first direction after being connected in series, the circuit channel has a rotation channel (the circuit channel at the ends of the two battery cell columns) after two adjacent battery cell columns are connected in series. Therefore, the two battery cell columns connected in series can make the positive and negative poles of the circuit channel here be at the same end, and so on, the circuit channels of the battery cells in even-numbered columns can make the positive and negative poles of the total circuit channel be at the same end. Therefore, the positive and negative poles of the total circuit channel of the circuit channels in odd-numbered columns are located at different ends.

[0058] like Figure 4 As shown, this design is equivalent to connecting the circuit channels in the two columns of first battery cells 111 in series into a circuit channel without a return channel. Therefore, after the circuit channel is connected in series with the circuit channels in other odd-numbered columns, the positive and negative poles of the total circuit channel can be located at the same end of the battery pack, which facilitates the arrangement of the electrodes of the battery pack.

[0059] In summary, in the battery pack provided by the present disclosure, adjacent first battery cells 111 in adjacent first battery cell columns 11 form a battery cell pair 112, and the two first battery cells 111 in the battery cell pair 112 are connected in series, and the adjacent battery cell pairs 112 are connected in series, so that the starting point and the end point of the current direction of the two columns of first battery cells 111 are located at the two ends (such as the length direction of the battery pack) of the first direction (such as the length direction of the battery pack). Figure 4 When the number of cell columns of the cell unit 10 is an odd number, the above solution can make the two first cell columns 11 equivalent to a composite cell column, and the composite cell column is combined with the remaining cell columns (such as Figure 1 In other words, through the above scheme, the cell columns with odd numbers of columns in the cell unit can be constructed similarly to the cell columns with even numbers of columns. For the cell columns with even numbers, by connecting multiple cell columns with even numbers in series, the positive terminal and the negative terminal of the cell unit 10 can be located at the same end of the battery pack, thereby facilitating the arrangement of the battery pack electrodes and facilitating the electrical connection between the cell unit 10 and the distribution box.

[0060] In this disclosure, Figure 3As shown, in order to facilitate the connection between the cell pairs 112, the positive and negative electrodes of the first cells 111 are arranged along the first direction respectively. In the first direction, the positive electrodes of the two first cells 111 in each cell pair 112 can be located on the same side, and the positive electrode of one first cell 111 in each cell pair 112 is electrically connected to the negative electrode of another first cell 111 through the first electrical connector 21. Figure 3 As shown, the positive electrodes of the two first battery cells 111 in the battery cell pair 112 are located on the same side, so that the positive and negative electrodes of the two first battery cells 111 in the battery cell pair 112 are connected in series so that the positive and negative electrodes of the battery cell pair 112 are located at both ends in the first direction.

[0061] The present disclosure does not limit the specific structure of the first electrical connector 21, as long as it can electrically connect the two first battery cells 111 in the battery cell pair 112. Figure 3 As shown, in order to facilitate the arrangement of the first electrical connector 21, in one embodiment of the present disclosure, the first electrical connector 21 includes a first section 211, a second section 212 and a third section 213, the first section 211 and the third section 213 are respectively connected to the opposite ends of the second section 212, the first section 211 and the third section 213 respectively extend from the opposite ends of the second section 212 in opposite directions in the first direction, the first section 211 is connected to the positive electrode of a first battery cell 111 in the battery cell pair 112, and the third section 213 is electrically connected to the negative electrode of the other first battery cell 111 in the battery cell pair 112. The two first battery cells 111 of the battery cell pair 112 are arranged along the second direction, and the first electrical connector 21 is used to connect the two first battery cells 111, wherein the second section 212 is used to connect the two first battery cells 111 in the second direction, and the first section 211 and the third section 213 are connected to the two ends of the second section 212, extending in opposite directions in the first direction, so as to facilitate the connection of the positive and negative electrodes of the two first battery cells 111. Since the positive electrodes of the two first battery cells 111 are located on the same side in the first direction, such a design facilitates the first electrical connector 21 to connect the positive and negative electrodes of the two first battery cells 111.

[0062] In this disclosure, Figure 3 and Figure 4 As shown, the extension direction of the second section 212 may intersect with the first direction. In other words, the second section 212 may be connected to the first section 211 at an angle, and the second section 212 may be connected to the third section 213 at an angle. The present disclosure does not limit the connection angle between the second section 212 and the first section 211, and the connection angle between the second section 212 and the third section 213, which may be any appropriate angle.

[0063] For example, the connection angle between the second section 212 and the first section 211 can be 90°, that is, the first section 211 can be perpendicular to the second section 212, and the connection angle between the second section 212 and the third section 213 is 90°, that is, the third section 213 can be perpendicular to the second section 212, and the first electrical connector 21 is constructed in a form similar to a "Z" row. Since the two first cells 111 between the cell pairs 112 are arranged relative to each other, the two first cells 111 are arranged in parallel, and the first electrical connector 21 is arranged in a form similar to a "Z" row, which facilitates the first electrical connector 21 to connect the two first cells 111, and can make the cell pairs 112 arranged neatly.

[0064] In the present disclosure, the positive electrode and the negative electrode of the first battery cell 111 are arranged along the first direction respectively, and in the embodiment where the positive electrodes of the two first battery cells 111 in each battery cell pair 112 are located on the same side, the positive electrode of one of the two adjacent battery cell pairs 112 is electrically connected to the negative electrode of the other through the second electrical connector 22. Different electrodes are arranged on the side where the adjacent battery cell pairs 112 are close to each other, which facilitates the connection between the two battery cell pairs 112 through the second electrical connector 22, and is also conducive to reducing the size of the second electrical connector 22 in the first direction.

[0065] The present disclosure does not limit the specific structure of the second electrical connector 22. Figure 3 and Figure 4 As shown, optionally, in one embodiment of the present disclosure, the second electrical connector 22 includes a fourth section 221, a fifth section 222 and a sixth section 223, the fourth section 221 and the sixth section 223 are respectively connected to opposite ends of the fifth section 222, the fourth section 221 and the sixth section 223 respectively extend from opposite ends of the fifth section 222 in opposite directions in the first direction, the fourth section 221 is connected to the positive electrode of one of the two adjacent battery cell pairs 112, and the sixth section 223 is connected to the negative electrode of the other of the two adjacent battery cell pairs 112. A plurality of battery cell pairs 112 are arranged along the first direction, and the second electrical connector 22 is used to connect two battery cell pairs 112, wherein the fifth section 222 is used to connect the two battery cell pairs 112 in the first direction, the fourth section 221 and the sixth section 223 are connected to the two ends of the fifth section 222, and extend in opposite directions in the first direction, so that the second electrical connector 22 is convenient to connect the positive and negative electrodes of the two battery cell pairs 112.

[0066] In this disclosure, Figure 3 and Figure 4 As shown, the extension direction of the fifth section 222 may intersect with the first direction. In other words, the fifth section 222 is connected to the fourth section 221 at an angle, and the fifth section 222 is connected to the sixth section 223 at an angle. The present disclosure does not limit the connection angle between the fifth section 222 and the fourth section 221, and the connection angle between the fifth section 222 and the sixth section 223, which may be any appropriate angle.

[0067] For example, the connection angle between the fifth segment 222 and the fourth segment 221 can be 90°, that is, the fourth segment 221 can be perpendicular to the fifth segment 222, and the connection angle between the fifth segment 222 and the sixth segment 223 can be 90°, that is, the sixth segment 223 can be perpendicular to the fifth segment 222, and the second electrical connector 22 is constructed in a form similar to a "Z" row. Since the battery cell pairs 112 are arranged along the first direction, the second electrical connector 22 is arranged in a form similar to a "Z" row, which facilitates the second electrical connector 22 to connect the positive and negative electrodes of the two battery cell pairs 112, and can make the first battery cell column 11 arranged neatly.

[0068] Alternatively, if Figure 3 As shown, in the first direction, the lengths of the first section 211 and the third section 213 of the first electrical connector 21 can be equal, the lengths of the fourth section 221 and the sixth section 223 of the second electrical connector 22 can be the same, and the length of the fourth section 221 can be less than the length of the first section 211.

[0069] In the present disclosure, optionally, as Figure 1 As shown, the battery cell unit 10 also includes at least one second battery cell column 12, the second battery cell column 12 and the first battery cell column 11 are arranged along the second direction, and at least one second battery cell column 12 is connected in series with the first battery cell column 11, the second direction is perpendicular to the first direction, the second battery cell column 12 includes a plurality of second battery cells 121 arranged along the first direction, the positive poles and negative poles of the second battery cells 121 are arranged along the first direction respectively, and the plurality of second battery cells 121 in the same second battery cell column 12 are connected in series. The second battery cell column 12 includes a plurality of second battery cells 121 connected in series, and the second battery cell column 12 is connected in series with the first battery cell column 11 to form a battery cell unit 10.

[0070] In the present disclosure, the battery pack further includes a plurality of third electrical connectors 30, and two adjacent second battery cells 121 in the second battery cell column 12 are connected in series through the third electrical connector 30. The second battery cell column 12 includes a plurality of second battery cells 121 connected in series, and the plurality of second battery cells 121 are connected through the third electrical connector 30 to form the second battery cell column 12.

[0071] Here, each cell column includes a plurality of cells (a first cell 111 and a second cell 121 ) whose narrow surfaces face each other, and the cell columns may include a first cell column 11 and a second cell column 12 .

[0072] In the present disclosure, in order to facilitate the connection of two adjacent second battery cells 121 , the third electrical connector 30 may be constructed as a strip extending along the first direction, and both ends of the third electrical connector 30 are electrically connected to two adjacent second battery cells 121 in the same second battery cell column 12 .

[0073] In the present disclosure, in order to connect adjacent second battery cell columns 12, the battery pack may further include a plurality of fourth electrical connectors 40, and two adjacent second battery cell columns 12 are connected in series via the fourth electrical connectors 40. The fourth electrical connector 40 is used to connect the ends of two adjacent second battery cell columns 12, and its function is to connect the circuit channels of the two second battery cell columns 12 in series.

[0074] In the present disclosure, optionally, in the second direction, the second cell column 12 adjacent to the first cell column 11 is connected in series with the first cell column 11 through the fifth electrical connector 50. A cell unit 10 has multiple columns of second cell columns 12, and the second cell 121 adjacent to the first cell column 11 can be connected to the first cell column 11 through the fifth electrical connector 50.

[0075] In the present disclosure, in order to facilitate the connection of the battery cell arrays, the fifth electrical connector 50 is configured as a strip extending along the second direction.

[0076] The fourth electrical connection 40 and the fifth electrical connection 50 may have the same structure or different structures. When the fourth electrical connection 40 and the fifth electrical connection 50 are constructed as the same structure, unified processing is convenient.

[0077] The present disclosure does not limit the number of the battery cell unit 10, which is at least one. Figure 1 As shown, the number of battery cell units can be two. In each battery cell unit 10, the number of first battery cell columns 11 is two, and the number of second battery cell columns 12 is an odd number. In this way, as analyzed above, the positive terminal and the negative terminal of the battery cell unit 10 can be located on the same side of the first direction.

[0078] Among them, Figure 4 and Figure 5 As shown, the first battery cell columns 11 appear in pairs, and the first battery cells 111 of the two first battery cell columns 11 are connected in series, and have positive and negative electrodes at both ends located in the first direction. A single second battery cell column 12 also has positive and negative electrodes at both ends located in the first direction. Therefore, when the second battery cell column 12 is connected to the two first battery cell columns 11, the positive and negative electrodes at the same end can be obtained. Then, when the second battery cell columns 12 in the battery cell unit 10 are odd-numbered columns, multiple second battery cell columns 12 are connected in series and then connected in series with two first battery cell columns 11 having positive and negative electrodes at both ends located in the first direction, so that the positive and negative electrodes of the battery cell unit 10 can be located at the same end of the battery pack.

[0079] For example, the number of battery cell units 10 is set to two. When the battery pack contains a single-row battery cell whose number of columns is a multiple of 4, such as 20 columns or 24 columns, the ends of the battery cells in each column are connected in series, so that the electrodes of multiple single battery cell units 10 are at the same end.

[0080] For example, the number of battery cell units 10 is set to two. When the number of columns of single-row battery cells of a single battery cell unit 10 is not a multiple of 2, and the number of columns of single-row battery cells contained in the battery pack is not a multiple of 4, such as 26 columns (the number of columns of single-row battery cells of a single battery cell unit 10 is 13 columns), the ends of the battery cells in each column are connected in series, and the electrodes of the battery cell unit 10 cannot be located at the same end of the battery pack. Figure 4 and Figure 5 As shown, the single-row battery cells of the two first battery cell rows 11 are cross-connected in series through the first electrical connector 21 and the second electrical connector 22, as shown in FIG. Figure 4 and Figure 5 The current arrows shown are equivalent to forming a composite single-row battery cell. This series connection scheme is equivalent to changing the 13-row battery cell of a single battery cell unit 10 to 11-row battery cells plus 1 composite single-row battery cell, which is 12-row battery cells, so that the total number of battery cell rows is a multiple of 2, that is, changing the 26-row battery cell of the two battery cell units 10 to 22-row battery cells plus 2 composite single-row battery cells, which is 24-row battery cells, so that the total number of battery cell rows is a multiple of 4, and finally ensuring that the electrodes belong to the same end of the battery pack;

[0081] In this disclosure, Figure 1 As shown, the number of the battery cell units 10 can be two. The two battery cell units 10 are arranged correspondingly, and can be used alone or in series, and can be adapted to the use of different voltage platforms. One of the two battery cell units is selected to be used alone or the two battery cell units are connected in series and used simultaneously, so that the battery pack can be applied to charging platforms with different charging voltages, and can be discharged at different voltages at the same time.

[0082] In the present disclosure, for the convenience of arrangement, two battery cell units 10 are arranged along the second direction, which is perpendicular to the first direction.

[0083] In this disclosure, Figure 6 The arrangement of another cell unit in the battery pack is shown, wherein the cell unit may include a second cell column 12 in addition to the first cell column 11 described above, the second cell column 12 includes a plurality of second cells 121 arranged along the first direction, the second cell column 12 and the first cell column 11 are arranged along the second direction, and the second cell column 12 is connected in series with the first cell column 11, the second direction is perpendicular to the first direction, the second electrical connector 22 includes a plurality of connection segments, and the second cells 121 are connected in series between the second electrical connectors 22. The cell pairs 112 are connected by the second electrical connector 22, and the second electrical connector 22 here can be divided into a plurality of connection segments 224, and the second cells 121 can be connected between the plurality of connection segments 224. This design can be applied to another connection arrangement with a circuit direction, such as an arrangement in which the circuit flow between adjacent cells is oriented in the second direction.

[0084] The structures of the multiple connecting segments 224 of the second electrical connector 22 may be the same or different, and the present disclosure does not limit this.

[0085] like Figure 6 As shown, the adjacent second battery cells 121 with wide faces facing each other are connected in series via the fourth electrical connector 40, and the adjacent second battery cells 121 with narrow faces facing each other at the end positions are connected in series via the third electrical connector 30. The first battery cells 111 are connected via the first electrical connector 21 to form a battery cell pair 121, and the two battery cell pairs 121 are connected via the second electrical connector 22. The second electrical connector 22 here is divided into multiple sections, and the second battery cells 121 are connected in series between the multiple sections of the second electrical connector 22, so that the circuit channels of the two columns of single-column battery cells in the middle part of the battery cell unit 10 have positive and negative electrodes at both ends in the first direction, so that when other battery cell columns with positive and negative electrodes at both ends in the first direction are connected in series, the electrodes of the entire battery pack can be located on the same side of the battery pack, which is convenient for the arrangement of the battery pack electrodes.

[0086] In the present disclosure, the structures of the first battery cell 111 and the second battery cell 121 may be the same or different, and the present disclosure does not limit this.

[0087] According to another aspect of the present disclosure, there is provided an electric device, including a device body and a battery pack, wherein the battery pack is mounted on the device body and is used to supply power to the device body.

[0088] Here, the electrical equipment may be vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, which are not limited in the present disclosure.

[0089] Optionally, when the electrical device is a vehicle, the battery pack disclosed herein can be installed on the body of the vehicle to provide power for driving the vehicle.

[0090] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0091] It should also be noted that the various specific technical features described in the above specific implementation methods can be combined in any suitable manner without contradiction.

[0092] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery pack, characterized in that: It comprises a battery cell unit and a plurality of first electrical connection structures, wherein the battery cell unit comprises at least two first battery cell columns, and each first battery cell column comprises a plurality of first battery cells arranged along a first direction; In the first direction, a plurality of first battery cells in one of the first battery cell columns are arranged correspondingly to a plurality of first battery cells in another adjacent first battery cell column, and a plurality of battery cell pairs are constructed, each battery cell pair including two first battery cells located in different first battery cell columns; The first electrical connection structure includes a first electrical connection member and a second electrical connection member; Two first battery cells in each battery cell pair are connected in series via the first electrical connector, and two adjacent battery cell pairs are connected in series via the second electrical connector.

2. The battery pack according to claim 1, characterized in that: The positive electrodes and negative electrodes of the first battery cells are arranged along a first direction respectively, and in the first direction, the positive electrodes of the two first battery cells in each battery cell pair are located on the same side; The positive electrode of one first battery cell of each battery cell pair is electrically connected to the negative electrode of another first battery cell through the first electrical connector.

3. The battery pack according to claim 2, characterized in that: The first electrical connector includes a first section, a second section and a third section; The first section and the third section are connected to opposite ends of the second section respectively; The first section and the third section extend from opposite ends of the second section in the first direction in opposite directions; The first section is connected to the positive electrode of a first battery cell in the battery cell pair, and the third section is electrically connected to the negative electrode of the other first battery cell in the battery cell pair.

4. The battery pack according to claim 3, characterized in that: An extending direction of the second section intersects with the first direction.

5. The battery pack according to claim 1, characterized in that: The positive electrodes and negative electrodes of the first battery cells are arranged along a first direction respectively, and in the first direction, the positive electrodes of the two battery cells in each battery cell pair are located on the same side; The positive electrode of one of the two adjacent battery cell pairs is electrically connected to the negative electrode of the other one through the second electrical connector.

6. The battery pack according to claim 5, characterized in that: The second electrical connector includes a fourth section, a fifth section and a sixth section; The fourth section and the sixth section are respectively connected to opposite ends of the fifth section; The fourth segment and the sixth segment extend from opposite ends of the fifth segment in opposite directions in the first direction respectively; The fourth section is connected to the positive electrode of one of the two adjacent battery cell pairs, and the sixth section is connected to the negative electrode of the other of the two adjacent battery cell pairs.

7. The battery pack according to claim 6, characterized in that: An extending direction of the fifth segment intersects with the first direction.

8. The battery pack according to any one of claims 1 to 7, characterized in that: The battery cell unit further comprises at least one second battery cell column; The second battery cell column and the first battery cell column are arranged along a second direction, and the at least one second battery cell column is connected in series with the first battery cell column, and the second direction is perpendicular to the first direction; The second battery cell array includes a plurality of second battery cells arranged along the first direction, and the positive electrodes and negative electrodes of the second battery cells are arranged along the first direction respectively; A plurality of the second battery cells in the same second battery cell column are connected in series.

9. The battery pack according to claim 8, characterized in that: The battery pack further includes a plurality of third electrical connectors, and two adjacent second battery cells in the same second battery cell column are connected in series via the third electrical connectors.

10. The battery pack according to claim 9, characterized in that: The third electrical connector is a strip extending along the first direction, and two ends of the third electrical connector are respectively electrically connected to two adjacent second battery cells in the same second battery cell column.

11. The battery pack according to claim 8, characterized in that: The battery pack further includes a plurality of fourth electrical connectors; Two second battery cells located at the ends of two adjacent second battery cell columns in the first direction are connected in series through the fourth electrical connector.

12. The battery pack according to claim 8, characterized in that: The battery pack further includes a fifth electrical connector; The first battery cell and the second battery cell located at the ends of the first battery cell column and the second battery cell column adjacent thereto in the first direction are connected in series through the fifth electrical connector.

13. The battery pack according to claim 12, characterized in that: The fifth electrical connector is configured as a strip extending along the second direction.

14. The battery pack according to claim 8, characterized in that: The number of the battery cell units is at least one, the number of the first battery cell columns in each battery cell unit is two, the number of the second battery cell columns is an odd number, and the positive terminal and the negative terminal of the battery cell unit are located on the same side of the first direction.

15. The battery pack according to any one of claims 1 to 7, characterized in that: The number of the battery core units is at least two.

16. The battery pack according to claim 15, characterized in that: The two battery cell units are arranged along a second direction, and the second direction is perpendicular to the first direction.

17. The battery pack according to any one of claims 1 to 5, characterized in that: The battery cell unit further comprises at least one second battery cell column, wherein the second battery cell column comprises a plurality of second battery cells arranged along a first direction; The second battery cell column and the first battery cell column are arranged along a second direction, and the second battery cell column and the first battery cell column are connected in series, and the second direction is perpendicular to the first direction; The second electrical connector includes a plurality of connecting segments, and the second battery cells are connected in series between the second electrical connectors.

18. An electrical equipment, characterized in that: It comprises a device body and a battery pack according to any one of claims 1 to 17, wherein the battery pack is installed on the device body and is used to supply power to the device body.

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