Battery pack for outdoor operation equipment and outdoor operation equipment

Abstract

The utility model discloses a battery pack for outdoor operation equipment and the outdoor operation equipment. The battery pack for the outdoor operation equipment comprises a shell; the mounting bracket is arranged in the shell, and a plurality of battery cells are arranged on the mounting bracket; the plurality of electrode connecting sheets are configured to be connected with the positive electrodes or the negative electrodes of the battery cells; the at least two collecting pieces are arranged on the mounting bracket, the collecting pieces are configured to be connected with the electrode connecting pieces and used for collecting electric energy information of the battery cells, first connecting parts are arranged on the collecting pieces, the plurality of electrode connecting pieces are connected among the battery cells, second connecting parts are arranged on the electrode connecting pieces, and the first connecting parts are used for being connected with the second connecting parts. According to the battery pack for the outdoor operation equipment, the acquisition pieces are connected between the battery cells and the BMS board, and the end parts of all the battery cells are connected through the acquisition pieces so as to acquire the electric energy information of the battery cells, so that a wiring harness is replaced by the acquisition pieces, the layout in the battery pack for the outdoor operation equipment is more tidy and reasonable, and the efficiency is higher during assembly.

Description

Technical Field

[0001] The present application relates to the technical field of battery packs, and particularly to a battery pack for outdoor working equipment and an outdoor working equipment. Background Art

[0002] Generally, a battery pack is formed by connecting multiple single cells in series and parallel, and a battery management system (BMS) is also added, etc., and it can be directly applied as an independent module to other devices.

[0003] However, for the existing battery packs for outdoor working equipment, in order to understand the situation of each single cell in real time to balance the charging or discharging between each single cell, multiple wire harnesses are connected to multiple electrode plates at the ends of the single cells, and then multiple wires are bundled onto the BMS board. This not only makes the assembly troublesome and the assembly efficiency low, but also there are many wire harnesses in the battery pack for outdoor working equipment, which are prone to be messy, not conducive to the heat dissipation of the single cells, and will occupy the space inside the battery pack for outdoor working equipment.

[0004] In view of this, it is necessary to provide an improved battery pack for outdoor working equipment to overcome the defects existing in the prior art. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the present application is to provide a battery pack for outdoor working equipment, which optimizes the structural layout of the battery pack.

[0006] The technical solution adopted by the present application to solve the problems of the prior art is: a battery pack for outdoor working equipment, comprising: a housing; a mounting bracket disposed inside the housing, and a plurality of single cells are disposed on the mounting bracket; a plurality of electrode connection pieces configured to connect the positive or negative electrodes of the single cells; at least two collecting members disposed on the mounting bracket, the collecting members being configured to be connected to the electrode connection pieces and used for collecting the electrical energy information of the single cells, wherein a first connection portion is disposed on the collecting member, a plurality of electrode connection pieces are connected between the single cells, and a second connection portion is disposed on the electrode connection piece, and the first connection portion is used to connect to the second connection portion.

[0007] A further improvement scheme is: the first connection portion is an opening on the collecting member, and the second connection portion is a connecting member capable of mating with the opening.

[0008] A further improvement scheme is: the extending direction of the collecting member is perpendicular to the axial direction of the single cell.

[0009] A further improvement solution is: it further includes a mounting bracket disposed inside the housing, a plurality of the battery cells are disposed inside the mounting bracket, and the collecting member is disposed on the mounting bracket and is used for collecting information of the plurality of battery cells.

[0010] A further improvement solution is: electrode connection pieces are connected to both ends of the plurality of battery cells, and along the direction parallel to the axis of the battery cell, the ratio of the projected area of the collecting member to the total projected area of all the electrode connection pieces at one end of the battery cell is greater than or equal to 1 / 3 and less than or equal to 1 / 2.

[0011] A further improvement solution is: a BMS board connected to the collecting member, a positive electrode piece and a negative electrode piece for connecting to the battery cells are further disposed inside the housing, and conductive members are respectively connected between the BMS board and the positive electrode piece and the negative electrode piece.

[0012] A further improvement solution is: a plurality of pins are provided at the edge of the conductive member, and jacks mating with the pins are provided on the BMS board.

[0013] A further improvement solution is: the extending direction of the BMS board is parallel to the axis direction of the battery cell.

[0014] A further improvement solution is: the thickness of the electrode connection piece is greater than 0.5 mm and less than or equal to 1.8 mm.

[0015] The present application further provides an outdoor working device, including: a power output component configured to output power to perform outdoor work; a traveling component configured to support the outdoor working device to travel; and,

[0016] The battery pack for the outdoor working device as described above, and the battery pack for the outdoor working device is configured to supply electric energy to the outdoor working device.

[0017] The present application further provides an outdoor working device, including: a power output component configured to output power to perform outdoor work; a traveling component configured to support the outdoor working device to travel; and, the battery pack for the outdoor working device as described above, and the battery pack for the outdoor working device is configured to supply electric energy to the outdoor working device.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] By connecting a collecting member between the battery cell and the BMS board, and connecting the collecting member to the ends of all the battery cells to collect the electric energy information of the battery cells, the present application realizes replacing the wire harness with the collecting member, making the layout inside the battery pack for the outdoor working device more neat and reasonable, and making the assembly more efficient. [Brief Description of the Drawings]

[0020] The following further describes in detail the specific embodiments of the present application with reference to the accompanying drawings:

[0021] Figure 1 is a perspective view of a battery pack for an outdoor working device according to an embodiment of the present application;

[0022] Figure 2 is a schematic structural diagram of the core layout of a battery pack for an outdoor working device according to an embodiment of the present application;

[0023] Figure 3 is a schematic internal structure diagram of a battery pack for an outdoor working device according to an embodiment of the present application;

[0024] Figure 4 is a schematic structural diagram of an electrode connecting piece of a battery pack for an outdoor working device according to an embodiment of the present application;

[0025] Figure 5 is a schematic structural diagram of an electrode connecting piece of a battery pack for an outdoor working device from another angle according to an embodiment of the present application;

[0026] Figure 6 is a schematic internal structure diagram of a battery pack for an outdoor working device from another angle according to an embodiment of the present application;

[0027] Figure 7 is a schematic structural diagram of an electrode connecting piece of a battery pack for an outdoor working device according to an embodiment of the present application;

[0028] Figure 8 is a schematic structural diagram of the core structure of a battery pack for an outdoor working device according to an embodiment of the present application;

[0029] Figure 9 is a schematic structural diagram of the positional relationship among the BMS board, positive and negative electrode plates, and conductive parts of a battery pack for an outdoor working device according to an embodiment of the present application;

[0030] Figure 10 is a schematic structural diagram of a conductive part of a battery pack for an outdoor working device according to an embodiment of the present application;

[0031] Figure 11 is a schematic structural diagram of a positive electrode plate of a battery pack for an outdoor working device according to an embodiment of the present application;

[0032] Figure 12 is a schematic structural diagram of a second bracket of a battery pack for an outdoor working device according to an embodiment of the present application;

[0033] Figure 13 is a schematic structural diagram of a second bracket of a battery pack for an outdoor working device from another angle according to an embodiment of the present application;

[0034] Figure 14 It is a schematic structural diagram of a second bracket of a battery pack for an outdoor working device from another angle according to an embodiment of the present application;

[0035] Figure 15 It is a schematic structural diagram of a second bracket of a battery pack for an outdoor working device from another angle according to an embodiment of the present application;

[0036] Figure 16 It is a schematic structural diagram of a battery pack for an outdoor working device with a shock-absorbing structure according to an embodiment of the present application;

[0037] Figure 17 It is a schematic structural diagram of the whole machine of an outdoor working device according to an embodiment of the present application;

[0038] Figure 18 It is a schematic structural diagram of the whole machine of an outdoor working device according to another embodiment of the present application;

[0039] Figure 19 It is a schematic structural diagram of the whole machine of an outdoor working device according to another embodiment of the present application;

[0040] Figure 20 It is a schematic structural diagram of the whole machine of an outdoor working device according to another embodiment of the present application.

[0041] Meanings of the reference numerals in the figure:

[0042] 100, battery pack; 101, output cell group; 102, odd-row cell group; 103, even-row cell group; 104, mounting bracket; 1041, first bracket; 1042, second bracket; 105, first mating surface; 106, second mating surface; 107, assembly part; 108, limiting part; 109, electrode connecting piece; 1091, recessed structure; 1092, protruding structure; 1093, second connecting part; 110, through hole; 111, BMS board; 112, positive electrode piece; 1121, first mating part; 1122, second mating part; 1123, inclined surface; 113, cell; 1131, end face; 1132, side wall; 1133, protruding structure; 114, negative electrode piece; 115, mounting seat; 116, conductive part; 1161, pin; 1162, fixing hole; 117, collecting part; 1171, first connecting part; 118, supporting part; 119, shock-absorbing structure; 120, plane; 121, handle; 122, heat dissipation slot; 123, limiting part; 200, main frame; 300, operation component; 400, seat; 500, traveling component; 600, power output component. [Detailed implementation manners]

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are some, but not all, of the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0044] A battery pack for outdoor working equipment (battery pack) is generally formed by connecting multiple single cells in series and parallel, and a battery management system (BMS, Battery Management Systems) is also added, etc., and it can be directly applied as an independent module to other devices.

[0045] However, for the existing battery packs for outdoor working equipment, the layout of the battery cells is relatively traditional. Generally, all the battery cells are neatly arranged or all the battery cells are staggered. Such a setting sometimes cannot well adapt to the installation of other components inside the battery pack for outdoor working equipment, resulting in insufficient utilization of the overall internal space of the battery pack for outdoor working equipment.

[0046] Moreover, for the existing battery packs for outdoor working equipment, the heat dissipation efficiency of the battery cells is improved by staggering the battery cells, that is, the battery cell groups in adjacent different rows are set at different heights, and usually the two relatively most distal battery cell groups are selected as the positive and negative output terminals. Since the heights of the battery cell groups at both ends are different, the positive and negative electrode plates are often set to different lengths to adapt to the battery cell groups of different heights, so that the output terminals of the positive and negative electrode plates are at the same height, and then the positive and negative electrode plates are connected to the BMS board at the same height. However, if electrode plates of different lengths are used for connection, it not only increases the complexity of the production of the positive and negative electrode plates, but also indirectly increases the assembly cost of the battery pack for outdoor working equipment.

[0047] Moreover, the higher battery cell group will occupy the space of the battery pack for outdoor working equipment. In order to adapt to the installation of other components, the height of the battery pack for outdoor working equipment will be increased as a whole, resulting in a relatively large overall space occupied by the battery pack for outdoor working equipment, which affects the compatibility of the battery pack for outdoor working equipment with other devices (such as outdoor working equipment or power tools).

[0048] Please refer to Figures 1 to 19The battery pack for outdoor working equipment disclosed in an embodiment of the present application is shown as follows. It includes a housing and a plurality of battery cells 113 arranged in the housing. The plurality of battery cells 113 are configured as follows: a first battery cell group, including two output battery cell groups 101 with the same height on a plane 120. The output battery cell groups 101 are configured to be connected to the positive or negative electrode of the battery pack 100 for outdoor working equipment to output electric energy externally; a second battery cell group, including an odd-row battery cell group 102 and an even-row battery cell group 103, and the odd-row battery cell group 102 and the even-row battery cell group 103 are arranged staggeredly on the plane 120. Wherein, the height of the output battery cell group 101 is different from the heights of both the odd-row battery cell group 102 and the even-row battery cell group 103.

[0049] In such a way that the height of the output battery cell group 101 for outputting electric energy is set to be different from the heights of both the odd-row battery cell group 102 and the even-row battery cell group 103, it is possible to make full use of the internal space of the battery pack 100 for outdoor working equipment, making the spatial layout of the battery pack 100 for outdoor working equipment more reasonable.

[0050] As Figure 1 and Figure 6 As shown, an installation bracket 104 is further arranged in the housing of the battery pack 100 for outdoor working equipment of the present application. A plurality of assembly parts 107 are arranged in the installation bracket 104, and the assembly parts 107 are used for assembling the battery cells 113. And the position layout of each assembly part 107 is set according to the layout of the battery cells 113. The installation bracket 104 includes a first bracket 1041 and a second bracket 1042 combined together. Assembly parts 107 are arranged on both the first bracket 1041 and the second bracket 1042, and the assembly parts 107 on the first bracket 1041 and the second bracket 1042 are arranged correspondingly. The two ends of the battery cell 113 are mounted on the installation bracket 104 by being inserted into the assembly parts 107 on the first bracket 1041 and the second bracket 1042 respectively. After the first bracket 1041 and the second bracket 1042 are combined, they form a substantially square structure.

[0051] As Figure 2 As shown, in a specific embodiment, the height h2 of the output battery cell group 101 is between the height h1 of the odd-row battery cell group 102 and the height h3 of the even-row battery cell group 103. By setting the height h2 of the output battery cell group 101 between the height h1 of the odd-row battery cell group 102 and the height h3 of the even-row battery cell group 103, the output battery cell group 101 does not occupy additional space in the height direction, but only arranges between the height h1 of the odd-row battery cell group 102 and the height h3 of the even-row battery cell group 103, saving the space occupied by the layout of the battery pack 100 for outdoor working equipment.

[0052] Furthermore, the two rows of output battery cell groups 101 are respectively arranged at both ends in the arrangement direction of the second battery cell group. In the layout where the height h2 of the two rows of output battery cell groups 101 is between the height h1 of the odd-row battery cell groups 102 and the height h3 of the even-row battery cell groups 103, the two rows of output battery cell groups 101 are also located at both ends of the entire battery cell group layout. This enables the battery cell groups to enclose a square structure, and sufficient reserved spaces will be formed at the four corners of this square structure. The reserved space area can be utilized to reinforce the structure of the mounting bracket 104 at the four corners, so as to increase the strength of the mounting bracket 104, and further increase the anti-drop ability and anti-impact ability of the battery pack 100 for outdoor working equipment.

[0053] Furthermore, at least one row of the two rows of output battery cell groups 101 is arranged between the second battery cell groups. Such an arrangement is beneficial for the output battery cell groups 101 to be closer in layout.

[0054] In a specific embodiment, the output battery cell groups 101, the odd-row battery cell groups 102, and the even-row battery cell groups 103 have the same length. This makes the arrangement of the battery cells 113 more regular, and thus is beneficial for making the internal space layout of the housing more compact.

[0055] Please refer to Figure 2 , in a specific embodiment, each battery cell group in the first battery cell group and the second battery cell group includes an even number of battery cells 113, and the even number of battery cells 113 are connected in parallel in pairs. Preferably, the battery pack for outdoor working equipment in this application includes 32 battery cells 113, which are respectively arranged into 8 rows of battery cell groups, and each row of battery cell groups contains four battery cells 113. Among them, two rows are output battery cell groups 101, and the rest are 3 rows of odd-row battery cell groups 102 and 3 rows of even-row battery cell groups 103. And the adjacent two battery cells 113 in each row are connected in parallel to supply power externally. The 32 battery cells 113 can be set into 16 groups of battery cells 113 connected in parallel in pairs, and then the 16 groups of battery cells 113 are connected in series to output electric energy externally.

[0056] In this application, the battery cell 113 is preferably a cylindrical battery cell 113, whose diameter is generally greater than 38 mm, preferably 40 mm, the length of the battery cell 113 is generally greater than or equal to 130 mm, preferably 130 mm. And the nominal voltage of a single battery cell 113 is greater than or equal to 3.2 V, preferably 3.2 V. The nominal capacity of the battery cell 113 is greater than or equal to 15 Ah, preferably 20 Ah.

[0057] The weight of the battery pack 100 for outdoor working equipment assembled from the above-mentioned battery cells is greater than or equal to 11.4 Kg, preferably 16 Kg. The nominal energy of the battery pack 100 for outdoor working equipment is greater than or equal to 1.54 Kwh, preferably 1.6 Kwh. The nominal voltage of the battery pack 100 for outdoor working equipment is greater than or equal to 51.2 v, preferably 58 v.

[0058] As Figure 9 shown, in a specific embodiment, one row of the two rows of output battery cell groups 101 is used to connect to the positive electrode plate 112, and the other row is used to connect to the negative electrode plate 114. The positive electrode plate 112 and the negative electrode plate 114 have the same height. Since the positive electrode plate 112 and the negative electrode plate 114 also need to be connected to other components, other components connected to the positive electrode plate 112 and the negative electrode plate 114 can be kept horizontally arranged relative to the positive electrode plate 112 and the negative electrode plate 114, making the spatial layout of the battery pack 100 for outdoor working equipment more compact in the height direction.

[0059] In a specific embodiment, the distance between the positive electrode plate 112 and the negative electrode plate 114 is greater than or equal to 200 mm. Such a setting can effectively prevent the situation of short circuit caused by the positive electrode plate 112 and the negative electrode plate 114 being bridged during assembly or use. Preferably, the distance between the positive electrode plate 112 and the negative electrode plate 114 is 200 mm or 225 mm.

[0060] As Figure 6 and Figure 7 shown, in a specific embodiment, a collecting member 117 for collecting information of a plurality of battery cells 113 is arranged on the mounting bracket 104. A first connecting portion 1171 is arranged on the collecting member 117. A plurality of electrode connecting pieces 109 are connected between the battery cells 113. A second connecting portion 1093 is arranged on the electrode connecting piece 109. The first connecting portion 1171 is used to connect to the second connecting portion 1093. Further, the first connecting portion 1171 is an opening on the collecting member 117, and the second connecting portion 1093 is a connecting member capable of mating with the opening. The connecting member is a convex block that is inserted and mated with the opening, and the convex block and the electrode connecting piece 109 are of an integrally formed structure. In the specific assembly process, after the connecting member is connected to the opening, the two are fixedly connected by welding.

[0061] As Figure 3 and Figure 6As shown, further, electrode connection tabs 109 are connected to both ends of multiple battery cells 113. Along the direction parallel to the axis of the battery cells 113, the ratio of the projected area of the acquisition member 117 to the total projected area of all the electrode connection tabs 109 at one end of the battery cell 113 is greater than or equal to 1 / 3 and less than or equal to 1 / 2. Such a setting makes the area of the electrode connection tabs 109 covered by the acquisition member 117 relatively small, which is beneficial to the heat dissipation of the battery cell 113, thereby helping the battery to achieve an ideal charge and discharge state. Preferably, the ratio of the projected area of the acquisition member 117 to the total projected area of all the electrode connection tabs 109 at one end of the battery cell 113 is 1 / 3, 2 / 5 or 1 / 2.

[0062] As Figure 4 , Figure 5 and Figure 7 shown, the thickness of the electrode connection tab 109 is greater than 0.5 mm and less than or equal to 1.8 mm, which is beneficial to improving the firmness of the connection between the electrode connection tab 109 and the positive or negative electrode of the battery cell 113 to prevent the electrode connection tab 109 from being welded through. Preferably, the thickness of the electrode connection tab 109 is 0.6 mm, 1 mm, 1.5 mm or 1.8 mm.

[0063] In a specific embodiment, the sum of the numbers of the positive electrode sheet 112, the negative electrode sheet 114 and the electrode connection tabs 109 of the present application is 17, and there are two acquisition members 117 in total, which are distributed at both ends of the battery cell 113. Therefore, there are at least 17 acquisition points on the two acquisition members 117, and each acquisition point separately acquires different positive electrode sheets 112, negative electrode sheets 114 and electrode connection tabs 109.

[0064] As Figure 4 , Figure 5 and Figure 8 shown, further, a concave structure 1091 is provided in the area where the electrode connection tab 109 is connected to the battery cell 113, and a protrusion structure 1133 is provided at the end of the battery cell 113. When the electrode connection tab 109 and the battery cell 113 are assembled, the protrusion structure 1133 of the battery cell 113 is located within the concave structure 1091. This is beneficial to shortening the distance of the battery pack 100 for outdoor working equipment along the axis direction of the battery cell 113, making the battery pack 100 for outdoor working equipment small in volume. Specifically, both ends of the battery cell 113 are convex structures.

[0065] Of course, during the production and processing of the electrode connecting piece 109, the concave structure 1091 of the electrode connecting piece 109 is formed by stamping, so that the opposite side of the concave structure 1091 of the electrode connecting piece 109 is a protruding shape structure 1092. The protruding structure 1133 of the battery cell 113 can also be connected to the protruding shape structure 1092 of the electrode connecting piece 109, which will ensure that there is sufficient heat dissipation gap between the end of the battery cell 113 and the electrode connecting piece 109, facilitating the heat dissipation of the battery cell 113.

[0066] As Figure 4 , Figure 5 and Figure 7 shown, further, the electrode connecting piece 109 can be a rhombus structure or a strip structure. In a specific embodiment, during assembly, a rhombus structure electrode connecting piece 109 can be used at one end of the battery cell group, and a strip structure electrode connecting piece 109 can be used at the other end. Of course, the electrode connecting pieces 109 of the same structure can be used at both ends of the battery cell group. For example, rhombus structure electrode connecting pieces 109 (such as Figure 4 or Figure 5 ) can be used at both ends of the battery cell group, or strip structure electrode connecting pieces 109 (such as Figure 7 ) can be used at both ends of the battery cell group.

[0067] Please also refer to Figure 9 and Figure 10 . In a specific embodiment, conductive members 116 are respectively connected between the BMS board 111 and the positive electrode sheet 112 and the negative electrode sheet 114. One side surface of a conductive member 116 is used for being attached to the positive electrode sheet 112 or the negative electrode sheet 114, and the other side surface is used for being attached to the BMS board 111. By arranging the conductive member 116 between the positive electrode sheet 112 or the negative electrode sheet 114 and the BMS board 111, the electrical contact between the two is made more stable.

[0068] As Figure 10, Further, a plurality of pins 1161 are provided at the edge of the conductive member 116, and jacks mating with the pins 1161 are provided on the BMS board 111. The conductive member 116 is a sheet-like structure. Preferably, the conductive member 116 is a square sheet-like structure. The pins 1161 are arranged around the square sheet-like structure, and the pins 1161 are arranged on the same side of the conductive member 116. During installation, the pins 1161 are inserted into the jacks, and then the conductive member 116 is welded to the BMS board 111 by welding, which increases the stability and firmness of the connection between the two. When assembling, the positive electrode plate 112 or the negative electrode plate 114 is located below, the conductive member 116 is in the middle, and the BMS board 111 is above. Then, the positive electrode plate 112 or the negative electrode plate 114 is connected to the BMS board 111 by screwing. The sheet-like conductive member 116 is beneficial to its full contact and fit with the BMS board 111 and the positive electrode plate 112 or the negative electrode plate 114, maintaining a good electrical signal connection. Of course, the connection between the positive electrode plate 112 or the negative electrode plate 114 and the BMS board 111 can also be other fixing methods, such as snap connection, bonding, soldering, etc., as long as the normal connection between the two can be ensured.

[0069] In a specific embodiment, the acquisition member 117 is connected to the BMS board 111 through a wire harness, so that the acquisition member 117 can timely transmit the information of the battery cell 113 collected to the BMS board 111, and then control the charging and discharging of the battery cell 113 through the BMS board 111. Of course, the connection between the acquisition member 117 and the BMS board 111 can also be other connection methods other than the wire harness.

[0070] In a specific embodiment, the extending direction of the BMS board 111 is arranged parallel to the axis direction of the battery cell 113, making the layout between the BMS board 111 and the battery cell 113 more compact and saving space.

[0071] Please also refer to Figure 11 , In a specific embodiment, the outer surface of the mounting bracket 104 includes a first mating surface 105. A mounting seat 115 is provided on the mounting bracket 104, and a second mating surface 106 is included on the mounting seat 115. First mating portions 1121 and second mating portions 1122 are respectively provided on the positive electrode plate 112 and the negative electrode plate 114. The first mating portion 1121 is used to cooperate with the first mating surface 105, and the second mating portion 1122 is used to cooperate with the second mating surface 106. The setting of multiple mating portions increases the stability of the installation of the positive electrode plate 112 and the negative electrode plate 114.

[0072] In a specific embodiment, a groove is formed on one surface of the mounting seat 115, and this groove is used to mount the BMS board 111. The BMS board 111 is fixed in the groove of the mounting seat 115 by screwing.

[0073] Further, both the first engaging portion 1121 and the second engaging portion 1122 of the positive electrode sheet 112 extend towards the same side of the positive electrode sheet 112, and both the first engaging portion 1121 and the second engaging portion 1122 of the negative electrode sheet 114 extend towards the same side of the negative electrode sheet 114. Specifically, the first engaging portion 1121 and the second engaging portion 1122 are part of the positive electrode sheet 112. After the first engaging portion 1121 is bent towards one side of the positive electrode sheet 112, it is bent again to form the second engaging portion 1122. Similarly, after the first engaging portion 1121 of the negative electrode sheet 114 is bent towards one side of the positive electrode sheet 112, it is bent again to form the second engaging portion 1122. In specific operation, both the first engaging portion 1121 and the second engaging portion 1122 extend towards the side of the mounting bracket 104 to facilitate stable connection with the upper BMS board 111.

[0074] Further, an inclined surface 1123 is formed at the connection of the first engaging portion 1121 and the second engaging portion 1122 of the positive electrode sheet 112 or the negative electrode sheet 114, which cooperates with an inclined surface of the mounting seat 115 to increase the cooperation degree between the positive electrode sheet 112 or the negative electrode sheet 114 and the mounting seat 115, thereby increasing the stability of the installation of the positive electrode sheet 112 or the negative electrode sheet 114.

[0075] Please also refer to Figure 3 , in a specific embodiment, a limiting portion 123 is further provided on the mounting seat 115. The limiting portion 123 is used for limiting and cooperating with the side surface of the positive electrode sheet 112 or the negative electrode sheet 114, further increasing the stability of the installation of the positive electrode sheet 112 or the negative electrode sheet 114. It is also beneficial for the operator to quickly cooperate the positive electrode sheet 112 or the negative electrode sheet 114 with the mounting seat 115 when installing the positive electrode sheet 112 or the negative electrode sheet 114, improving the assembly efficiency.

[0076] In a specific embodiment, in order to reduce the shaking of the battery cell 113 in the mounting bracket 104, a plurality of assembling portions 107 adapted to assemble the battery cell 113 are provided on the mounting bracket 104, and a limiting member 108 for limiting the movement of the battery cell 113 is provided in the assembling portion 107. Generally, the assembling portion 107 is an installation groove. During assembly, the battery cell 113 is assembled in the installation groove. Through the setting of the limiting member 108, the shaking of the battery cell 113 is restricted, usually restricting the shaking of the battery cell 113 in its axial and radial directions, which can effectively prevent the outer wall of the battery cell 113 from being damaged due to large shaking, so as to prevent leakage.

[0077] Further, the limiting member 108 protrudes from the inner wall of the assembling portion 107 into the inner cavity of the assembling portion 107, and the surface of the limiting member 108 that cooperates with the battery cell 113 is a guiding surface. When the battery cell 113 is assembled into the assembling portion 107, the guiding surface is conducive to guiding the movement of the battery cell 113 into the assembling portion 107, and the interference fit between the limiting member 108 and the outer wall of the battery cell 113 realizes the limiting of the battery cell 113 in the assembling portion 107.

[0078] Further, the battery cell 113 is a cylindrical battery cell 113, the assembling portion 107 is a circular assembling portion 107, and the ratio of the length of the limiting member 108 in the radial direction of the battery cell 113 to the length of the diameter of the battery cell 113 is greater than or equal to 0.02 and less than or equal to 0.05. With such a setting, while ensuring that the limiting member 108 plays a limiting role on the battery cell 113, the limiting member 108 also occupies a relatively small space in the radial direction of the assembling portion 107. Therefore, when planning the assembling portion 107, the overall size of the assembling portion 107 will not be occupied by a large size of the limiting member 108, which is helpful for the compact design of the battery pack 100 for outdoor operation equipment. Preferably, the ratio of the length of the limiting member 108 in the radial direction of the battery cell 113 to the length of the diameter of the battery cell 113 is 0.02, 0.03 or 0.05.

[0079] Such as Figure 12 、 Figure 14 and Figure 15 In a specific embodiment, a support portion 118 is provided at the end of the assembling portion 107. In the axial direction of the battery cell 113, the ratio of the projected area of the support portion 118 to the projected area of a single end face 1131 of the battery cell 113 is greater than or equal to 0.002 and less than or equal to 0.003. Such a setting is also to ensure that the limiting member 108 plays a limiting role on the battery cell 113 while making the limiting member 108 occupy a relatively small space.

[0080] The support portion 118 is used to limit the battery cell 113 during assembly so that the battery cell 113 remains within the assembling portion 107.

[0081] Please also refer to Figure 13, Further, in the axial direction of the battery cell 113, the ratio of the projected area of the support portion 118 to the projected area of the end face 1131 of a single battery cell 113 is greater than or equal to 0.0025 and less than or equal to 0.0028. Preferably, the ratio of the projected area of the support portion 118 to the projected area of the end face 1131 of a single battery cell 113 is 0.0025, 0.0026 or 0.0028. Such a setting makes the area of the support portion 118 smaller, and further makes the diameter of the through hole 110 at the end of the assembly portion 107 larger, which is beneficial to the heat dissipation of the battery cell 113 and also beneficial to the battery cell 113 to leak out more parts through the through hole 110 so that the remaining electrode connecting pieces 109 or the positive electrode connecting piece or the negative electrode connecting piece can be connected.

[0082] In a specific embodiment, a limiting member 108 is provided at any one of the middle part and both ends of the assembly portion 107. Arranging a plurality of limiting members 108 in the axial direction of the battery cell 113 further helps to limit the shaking of the battery cell 113 in the assembly portion 107 and improves the stability of the battery cell 113.

[0083] Specifically, the limiting member 108 is a bump formed radially inwards from the inner wall of the assembly portion 107.

[0084] In a specific embodiment, a plurality of limiting members 108 are provided. Preferably, three limiting members 108 are provided on the inner wall of one assembly portion 107. The three limiting members 108 can be on the same horizontal plane 120 in the axial direction or on different horizontal planes 120.

[0085] Such as Figure 16 , In a specific embodiment, a shock-absorbing structure 119 is provided on the mounting bracket 104. Further, the shock-absorbing structure 119 is a shock-absorbing foam provided on the outer periphery of the mounting bracket 104. It is beneficial to buffer the shaking of the mounting bracket 104 and the battery cell 113 in the housing and reduce the occurrence of damage to the battery cell 113.

[0086] Such as Figure 1 , Further, heat dissipation slots 122 are provided on the housing. The heat dissipation slots 122 are provided on two opposite faces of the housing to facilitate convection. Specifically, they are provided in the up and down directions of the housing. The provision of the heat dissipation slots 122 is beneficial to dissipate the heat generated when the battery cell 113 is charged or discharged.

[0087] Such as Figure 1 , A handle 121 is provided on the upper part of the housing. Through the handle 121, it is beneficial to carry the battery pack 100 for outdoor working equipment so that the battery pack 100 for outdoor working equipment can be assembled with other equipment to charge or discharge the battery pack 100 for outdoor working equipment.

[0088] In a specific embodiment, the ratio of the area of the side wall 1132 of the battery cell 113 located within the assembly portion 107 to the area of the entire side wall 1132 of the battery cell 113 is greater than or equal to 1 / 3 and less than or equal to 1 / 2. Such a setting ensures that the area enclosed within the assembly portion 107 does not exceed half of the side wall 1132 of the battery, which is conducive to the heat dissipation of the battery cell 113 and alleviates the occurrence of spontaneous combustion. Preferably, the ratio of the area of the side wall 1132 of the battery cell 113 located within the assembly portion 107 to the area of the entire side wall 1132 of the battery cell 113 is 1 / 3, 2 / 5, or 1 / 2.

[0089] As Figure 17 , the present application also provides an outdoor working device, which includes the above-mentioned battery pack 100 for outdoor working devices. The battery pack 100 for outdoor working devices includes: a housing and a plurality of battery cells 113 disposed within the housing; the plurality of battery cells 113 are configured as follows: a first battery cell group, including two rows of output battery cell groups 101 having the same height on a plane 120, and the output battery cell groups 101 are configured to be connected to the positive or negative electrode of the battery pack 100 for outdoor working devices to output electric energy externally; a second battery cell group, including an odd-row battery cell group 102 and an even-row battery cell group 103, and the odd-row battery cell group 102 and the even-row battery cell group 103 are arranged alternately on the plane 120; wherein, the height of the output battery cell group 101 is different from the heights of both the odd-row battery cell group 102 and the even-row battery cell group 103.

[0090] The outdoor working device includes a main frame 200, a seat 400, a power output component 600, a traveling component 500, an operating component 300, and a power supply device.

[0091] Further, the main frame 200 extends in a first linear direction parallel to its front-rear direction on the working surface. Among them, the seat 400 is installed on the main frame 200 for the user to sit. The main frame 200 is also used to install the power output component 600, the traveling component 500, the operating component 300, and the power supply device. The power supply device is used to provide an energy source for the power-consuming units of the entire outdoor working device, such as enabling the cutting component to perform cutting operations, and enabling the traveling component 500 to support the main frame 200 and the related components on the main frame 200 to travel and for the power consumption of other power-consuming units. The power supply device includes a battery compartment and a battery pack, and the power supply device is specifically the above-mentioned battery pack 100 for outdoor working devices.

[0092] The power output component 600 is a workpiece for realizing the tool function. In this embodiment, the outdoor working device is a ride-on mower, and the power output component 600 is specifically a cutting component for outputting power to realize the mowing function of the ride-on mower. The cutting component is set to 2 groups or 3 groups. The cutting component is arranged below the main frame 200. In one embodiment, the cutting component includes: a cutter head, a mowing element, and a cutting motor. The mowing element is used for cutting vegetation such as grass when rotating at a high speed. For example, the mowing element is a blade for cutting the vegetation on the lawn. The cutter head forms a mowing space for accommodating the mowing element, and at least part of the mowing element is located in the mowing space. In some embodiments, the number of mowing elements can be 2, and correspondingly, the number of cutting motors is also 2. The two cutting motors independently drive the two mowing elements respectively. In some embodiments, the number of mowing elements can be 3, and correspondingly, the number of cutting motors is also 3. The three cutting motors independently drive the three mowing elements respectively.

[0093] Of course, the power output component 600 can also be detached from the outdoor working device. In some embodiments, it can be understood that the power output component 600 can be replaced by other components. Therefore, the outdoor working device can not only cut vegetation, but also replace the cutting component with functional components such as snow shoveling, snow sweeping, snow blowing, and flushing. Those skilled in the art should be able to adaptively replace various functional components without creative labor, and the above should all be included in the protection scope of this embodiment.

[0094] The traveling component 500 includes traveling wheels arranged on the main frame 200 and a traveling motor for driving the traveling wheels. The traveling wheels are arranged on both sides of the main frame 200 so that the center of gravity of the outdoor working device remains within the main frame 200 to reduce the probability of the outdoor working device tipping over during traveling. In one embodiment, the number of traveling wheels is set to 4, including 2 front traveling wheels and 2 rear traveling wheels. The front traveling wheels can be universal wheels. The traveling motor is connected to the rear traveling wheels and drives the rear traveling wheels to rotate. The 2 rear traveling wheels are both matched with the traveling motor, and the rotational speeds of the 2 traveling motors can be the same or different. When the user drives the outdoor working device straight, the rotational speeds of the two traveling motors are approximately the same; when the user drives the outdoor working device to turn, the rotational speeds of the two traveling motors are different, and the outdoor working device turns to the side with the lower rotational speed of the traveling motor. In some embodiments, the diameter of the front traveling wheels is smaller than that of the rear traveling wheels. Of course, the number of traveling wheels can also be set to 3 or 5.

[0095] In one embodiment, the traveling wheels can be configured as a traveling device of other structures for supporting the outdoor working device to travel.

[0096] The operating component 300 includes a left operating lever and a right operating lever disposed on the left and right sides of the outdoor working device. The user can control the outdoor working device to move forward, backward or turn by manipulating the left and right operating levers. The operating component 300 can also be a steering wheel capable of controlling the outdoor working device. This application also includes a braking component, which is arranged on the upper surface in front of the main frame 200 for the user to step on to control the operating state of the outdoor working device.

[0097] The power supply device is arranged at the rear of the outdoor working device. The power supply device includes a battery pack, a BMS control board for controlling the output and input of the battery pack, and a battery compartment for installing the battery pack. The battery pack is specifically the battery pack 100 for the above-mentioned outdoor working device. The battery pack is electrically connected to the electrical connection terminals on the battery compartment through the electrical connection terminals on it to supply power to the outdoor working device. Preferably, the battery compartment can be set to accommodate battery packs with different capacitances to increase the adaptability of the outdoor working device to different battery packs. Among them, the battery pack can also be removed to supply power to other electric tools, increasing the multi-purpose nature of the battery pack. Compared with the traditional use of fossil fuels as the energy source, the outdoor working device of this application is more environmentally friendly and more in line with the long-term development plan. Preferably, the battery pack is preferably made of lithium iron phosphate battery cells or ternary lithium battery cells.

[0098] As Figure 18 、 Figure 19 and Figure 20 shown, it is a schematic structural diagram of the outdoor working device in another embodiment.

[0099] The outdoor working device can be implemented as an agricultural working vehicle, specifically exemplified as a UTV vehicle, such as Figure 18 and Figure 19 or a tractor, such as Figure 20 . The battery compartment can be arranged at the front of the vehicle body of the UTV vehicle or the tractor. There is an openable battery compartment cover on the top of the battery compartment, and the battery pack is arranged inside the battery compartment. Of course, the battery pack 100 can also be arranged under the seat of the UTV vehicle or the tractor.

[0100] The connection between the battery pack 100 and the UTV vehicle or the tractor is a detachable connection for easy replacement of the battery pack 100.

[0101] In this embodiment, the operating component 300 is the steering wheel 300 on the UTV vehicle or the tractor. The steering wheel 300 can be used to control the steering of the UTV vehicle or the tractor, and a display screen can be positioned on the steering wheel 300.

[0102] Specifically, the display screen can display the power of the battery pack 100, which helps the user to judge the working area of the outdoor working device according to the remaining power to replace the battery pack 100.

[0103] The display screen can also display the information of the battery cell 113 collected in real time by the electrode connecting piece 109, the positive electrode piece 112 or the negative electrode piece 114, which is convenient for users or maintenance personnel to accurately obtain the position of the faulty battery cell 113 in case of a fault, so as to perform timely maintenance or replacement of the battery cell 113.

[0104] Of course, the display screen can also display the operating temperature of the battery pack 100. Since too high or too low temperature will affect the actual endurance of the battery, and too high temperature will cause spontaneous combustion of the battery pack 100, resulting in dangerous accidents. By means of the display screen, the situation of the operating temperature of the battery pack 100 can be understood in time, and corresponding measures can be taken, such as shutdown and other processing methods.

[0105] The steering wheel 300 is located in front of the seat on the vehicle frame, and its upper surface can be inclined at a certain angle towards the seat, which is convenient for users to operate the steering wheel 300 and can be more oriented towards the user's face, so as to facilitate the user to view the display screen. The steering wheel 300 can also be set to a structure with adjustable angle to meet the needs of different users for the inclination angle of the display screen. The steering wheel 300 can also be set to be adjustable in height. When users of different heights use it, it can be adjusted according to their own height requirements. The height of the steering wheel can be adjusted manually or electrically.

[0106] Exemplarily, Figure 18 and Figure 19 are both UTV vehicles. Among them, Figure 18 The UTV vehicle shown is a single-row seat UTV vehicle, Figure 19 The UTV vehicle shown is a double-row seat UTV vehicle. Attachment mechanisms, such as carrying buckets, can be provided at the tails of both the single-row seat UTV vehicle and the double-row seat UTV vehicle.

[0107] Exemplarily, Figure 20 What is shown is a tractor, and a trailer can be hung at its tail.

[0108] This application is not limited to the above specific embodiments. Those of ordinary skill in the art can easily understand that there are many alternative solutions for the battery pack for outdoor working equipment of this application without departing from the principles and scope of this application. The protection scope of this application shall be subject to the content of the claims.

Claims

1. A battery pack for outdoor working equipment, characterized in that: include: case; A mounting bracket is arranged in the housing, and a plurality of battery cells are arranged on the mounting bracket; A plurality of electrode connecting sheets, configured to connect the positive electrode or the negative electrode of the battery cell; At least two collecting pieces are arranged on the mounting bracket, and the collecting pieces are configured to be connected to the electrode connecting pieces and used to collect the electric energy information of the battery cells, wherein a first connecting portion is provided on the collecting piece, a plurality of electrode connecting pieces are connected between the battery cells, a second connecting portion is provided on the electrode connecting pieces, and the first connecting portion is used to be connected to the second connecting portion.

2. The battery pack for outdoor working equipment according to claim 1, characterized in that: The first connecting portion is an opening on the collecting member, and the second connecting portion is a connecting member that can be matched with the opening.

3. The battery pack for outdoor working equipment according to claim 1, characterized in that: The extending direction of the collecting member is perpendicular to the axial direction of the battery core.

4. The battery pack for outdoor working equipment according to claim 1, characterized in that: It also includes a mounting bracket arranged in the shell, a plurality of the battery cells are arranged in the mounting bracket, and the collecting component is arranged on the mounting bracket and is used to collect information of the plurality of the battery cells.

5. The battery pack for outdoor working equipment according to claim 1, characterized in that: Both ends of the multiple battery cells are connected to electrode connecting sheets, and along the axis direction parallel to the battery cells, the ratio of the projected area of ​​the collecting member to the sum of the projected areas of all the electrode connecting sheets at one end of the battery cells is greater than or equal to 1 / 3 and less than or equal to 1 / 2.

6. The battery pack for outdoor working equipment according to claim 1, characterized in that: The shell also includes a BMS board connected to the collection component and a positive electrode sheet and a negative electrode sheet connected to the battery cell. Conductive members are connected between the BMS board and the positive electrode sheet and the negative electrode sheet.

7. The battery pack for outdoor working equipment according to claim 6, characterized in that: A plurality of pins are arranged at the edge of the conductive member, and sockets matched with the pins are arranged on the BMS board.

8. The battery pack for outdoor working equipment according to claim 7, characterized in that: The extension direction of the BMS board is parallel to the axial direction of the battery cell.

9. The battery pack for outdoor working equipment according to claim 8, characterized in that: The thickness of the electrode connecting sheet is greater than 0.5 mm and less than or equal to 1.8 mm.

10. An outdoor working equipment, characterized in that: include: A power output assembly configured to output power to perform outdoor work; A walking assembly, configured to support the outdoor working equipment in walking; and, The battery pack for outdoor work equipment according to any one of claims 1 to 9, wherein the battery pack for outdoor work equipment is configured to provide electrical energy to the outdoor work equipment.

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