Battery box

Abstract

The utility model relates to the technical field of energy storage, in particular to a battery box. The battery box comprises a box body and a battery assembly, the battery assembly comprises a plurality of single batteries, the single batteries are sequentially arranged in a row in the first direction in the posture that the large faces are opposite, and the large faces of every two adjacent single batteries in each row are bonded; the box body comprises a frame, the frame comprises a first surrounding plate and a second surrounding plate, and the first surrounding plate and the second surrounding plate respectively press the two ends of the battery assembly in the first direction; the frame further comprises a third coaming and a fourth coaming, the third coaming and the fourth coaming respectively press the two ends of the battery assembly in the second direction, and the first direction and the second direction are arranged in a crossed mode; the first coaming, the third coaming, the second coaming and the fourth coaming are sequentially connected in a fastened mode. According to the frame of the box body of the battery box, each single battery is prevented from moving and misplacing through the pressing force and the pressing stroke, the complexity of the assembling process and the structure is reduced, and the positioning reliability and the positioning precision of the box body on a battery assembly are improved.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a battery box. Background Art

[0002] With the development of new energy, battery technology continues to advance in the field of energy storage, such as the application of battery boxes in communication base stations in the energy storage industry.

[0003] The batteries inside a traditional battery box are bundled and fixed into modules before being put into the box. The assembly process of this battery box is complicated and difficult, making it difficult to improve production and efficiency. In addition, there are many types and quantities of parts, resulting in significantly insufficient reliability in connection and fixation with the box body.

[0004] Another traditional battery box has batteries placed in a non-module form. The common solution is to position the internal batteries by controlling the size of the box itself, which results in inaccurate battery positioning. In addition, the box structure is usually complex and the assembly process is cumbersome, which not only has high costs, but also makes it difficult to improve production and efficiency.

[0005] For example, the utility model patent with the authorization announcement number CN214797574U and the utility model name "A utility model patent for an energy storage battery structure" discloses an energy storage battery structure. The side fixed profiles and the bottom plate of the energy storage battery structure are connected by fixed ribs on both sides, the electrical installation profiles, the rear end fixed profiles and the side fixed profiles are connected by fixed ribs all around, and the electrical installation profiles, the rear end fixed profiles and the bottom plate are connected by front and rear fixed ribs. The battery cells are installed in a box in which the electrical installation profiles, the rear end fixed profiles, the side fixed profiles and the bottom plate are installed. It can be seen that the different fixed profiles of the energy storage battery structure are connected by fixed ribs, and the battery cells are completely positioned by the dimensions of the installed box in various dimensions. The assembly process of the fixed profiles and the fixed ribs is actually quite complicated, and the positioning of the battery cells by the box is not accurate and reliable enough. Utility Model Content

[0006] The purpose of the present application is to provide a battery box to solve, to a certain extent, the technical problems in the prior art that the traditional module-free battery box has a complex structure and the positioning of the internal batteries is not accurate and reliable enough.

[0007] The present application provides a battery box, comprising a box body and a battery assembly;

[0008] The battery assembly includes a plurality of single cells, and the plurality of single cells are arranged in a row in a first direction with their large surfaces facing each other;

[0009] The box body includes a frame, and the frame includes a first enclosure plate and a second enclosure plate that are opposite to each other along a first direction, and the first enclosure plate and the second enclosure plate respectively press two ends of the battery assembly in the first direction;

[0010] The frame further includes a third enclosure plate and a fourth enclosure plate opposite to each other along a second direction, the third enclosure plate and the fourth enclosure plate respectively press two ends of the battery assembly in the second direction, and the first direction and the second direction are arranged crosswise;

[0011] The first enclosure panel, the third enclosure panel, the second enclosure panel and the fourth enclosure panel are fastened and connected in sequence.

[0012] In any of the above technical solutions, further, the battery box also includes an elastic adhesive member;

[0013] The elastic adhesive member is bonded between every two adjacent single batteries along the first direction.

[0014] In any of the above technical solutions, further, the elastic adhesive member is in a plate shape, and the plate-shaped elastic adhesive member is in contact with a large surface of the single battery.

[0015] In any of the above technical solutions, further, the first enclosure plate and the second enclosure plate each include an enclosure plate body and a flange portion, and both ends of the enclosure plate body in the first direction are connected to the flange portion;

[0016] The flanged portions at one end of the first enclosure plate and the second enclosure plate along the first direction are both attached to and fastened to the third enclosure plate;

[0017] The flange portions at the other ends of the first enclosure panel and the second enclosure panel along the first direction are both in contact with and fastened to the fourth enclosure panel.

[0018] In any of the above technical solutions, further, the box body further includes a first cover plate and a second cover plate, the first cover plate and the second cover plate are respectively arranged at the two end openings of the frame in the third direction, and the first direction, the second direction and the third direction are arranged crosswise in pairs;

[0019] The first cover plate and the second cover plate each include a cover plate body and a cover plate folded edge, the cover plate folded edge is arranged around the cover plate body, and the first enclosure plate, the second enclosure plate, the third enclosure plate and the fourth enclosure plate are fastened to the cover plate folded edge of at least one of the first cover plate and the second cover plate.

[0020] In any of the above technical solutions, further, the battery box also includes a mounting shell and a control circuit board, the mounting shell is connected to one end of the box body along the second direction, the mounting shell and the frame enclose an installation space, and the control circuit board is arranged in the installation space and connected to the mounting shell;

[0021] The battery box further comprises a conductive component, wherein the conductive component comprises a plurality of output pole pieces;

[0022] The battery box also includes an insulating fixing assembly, the output pole piece electrically connects the control circuit board and a pole of one of the single cells, and a plurality of the output pole pieces are connected to the frame via the insulating fixing assembly.

[0023] In any of the above technical solutions, further, the mounting shell includes a mounting plate portion and a mounting folded edge, the mounting plate portion is arranged relative to the third enclosure plate along the second direction and spaced apart, and the mounting folded edge is arranged around the mounting plate portion;

[0024] The cover plate body of the first cover plate is in contact with and fastened to the mounting fold;

[0025] The cover body of the second cover is provided with a positioning hole at the edge within the installation space, and the installation fold is provided with a positioning tongue, which is clamped with the cover fold of the second cover away from the installation plate part at the positioning hole.

[0026] In any of the above technical solutions, further, the third enclosure is provided with a supporting portion in the installation space, the insulating fixing assembly comprises a plurality of insulating fasteners, and the plurality of insulating fasteners are connected between the supporting portion and the plurality of output pole pieces in a one-to-one correspondence;

[0027] At least one of the plurality of output pole pieces is electrically connected to the control circuit board and the positive pole of one of the single cells, and at least one of the plurality of output pole pieces is electrically connected to the control circuit board and the negative pole of another of the single cells.

[0028] In any of the above technical solutions, further, the box body further includes a first distance connecting member, the first distance connecting member is abutted between the cover plate folded edge of the first cover plate and the mounting plate portion along the second direction, so that the frame and the mounting plate portion maintain a first interval along the second direction;

[0029] The box body further includes a second distance connection member, and the control circuit board is connected to the mounting plate portion through the second distance connection member, so that the control circuit board and the mounting plate portion maintain a second interval along the second direction;

[0030] The second interval is smaller than the first interval.

[0031] In any of the above technical solutions, further, the conductive component also includes a connecting electrode, and the positive electrode column of one of the single cells is electrically connected to the negative electrode column of another adjacent single cell through the connecting electrode;

[0032] The battery box also includes an insulating bracket, which is positioned and connected to the pole surface of the battery assembly. The insulating bracket is provided with a mounting groove on a side facing away from the battery assembly, and the connecting electrode is adaptively arranged in the mounting groove.

[0033] Compared with the prior art, the beneficial effects of this application are:

[0034] The battery box provided by the present application includes a box body and a battery assembly, wherein the box body includes a frame, and the battery assembly is positioned circumferentially by the frame. The first and second enclosures of the frame press the battery assembly at both ends in the first direction, so that the large surfaces of each column of single cells are pressed tightly, and the third and fourth enclosures of the frame press the battery assembly at both ends in the second direction, so as to press the small surfaces of the single cells.

[0035] Compared with the solution that only relies on the size of the box itself to accommodate and limit the internal batteries, the solution of pressing the battery assembly through the frame can prevent each single battery from moving through the pressing force and pressing stroke. On this basis, the first enclosure, the third enclosure, the second enclosure and the fourth enclosure are fastened and connected in sequence, that is, they are fixed directly by fasteners, which significantly reduces the complexity of the assembly process and structure compared to connecting through fixed ribs around, thereby improving the reliability and accuracy of the positioning of the box for the battery assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0037] Figure 1 A schematic diagram of the structure of a battery box provided in an embodiment of the present application;

[0038] Figure 2 A schematic diagram of the structure of the first enclosure of the battery box provided in an embodiment of the present application;

[0039] Figure 3 A schematic diagram of the structure of the battery box provided in an embodiment of the present application when the first cover plate is omitted;

[0040] Figure 4 A schematic diagram of the structure of the battery box provided in an embodiment of the present application with the mounting shell omitted;

[0041] Figure 5 A schematic diagram of the structure of the battery box provided in an embodiment of the present application with the control circuit board omitted;

[0042] Figure 6 for Figure 5 A local enlarged view at D;

[0043] Figure 7 A schematic diagram of the structure of the battery box at the elastic adhesive member provided in an embodiment of the present application;

[0044] Figure 8 A schematic diagram of the structure of the first cover plate of the battery box provided in an embodiment of the present application;

[0045] Fig. 9 A first structural schematic diagram of a battery box provided in an embodiment of the present application at a control circuit board;

[0046] Fig.10 A second structural schematic diagram of the battery box on the control circuit board provided in an embodiment of the present application.

[0047] Reference numerals:

[0048] 1-battery box; 100-first enclosure; 1000-enclosure body; 1001-flange portion; 101-second enclosure; 102-third enclosure; 1020-support portion; 103-fourth enclosure; 104-first cover plate; 1040-cover plate body; 1041-cover plate folding edge; 1042-connecting ear; 105-second cover plate; 1050-positioning hole; 11-mounting shell; 110-mounting plate portion; 111-mounting folding edge; 112-positioning tongue; 12-monocell; 1 20-large surface; 121-pole surface; 122-small surface; 13-handle; 14-fastening member; 150-power connection interface; 151-communication interface; 16-elastic adhesive; 17-handle connecting seat; 18-first distance connecting member; 19-second distance connecting member; 20-insulating bracket; 21-connecting pole piece; 22-output pole piece; 22e-first output pole piece; 22f-second output pole piece; 23-insulating fastener; 24-control circuit board; 25-insulating partition. DETAILED DESCRIPTION

[0049] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0050] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] See also Figures 1 to 10 As shown, an embodiment of the present application provides a battery box 1 including a box body and a battery assembly.

[0053] The battery assembly includes a plurality of single cells 12 , each of which has a large surface 120 , a pole surface 121 and a small surface 122 . A positive pole and a negative pole are arranged on the pole surface 121 of the single cell 12 . The large surface 120 of the single cell 12 is perpendicular to the first direction a.

[0054] The plurality of single cells 12 are arranged in a row in sequence along the first direction a with their large surfaces 120 facing each other, and the number of single cells 12 in each row is not less than two. Figure 3 FIG. 1 shows a specific example of eight single cells 12 arranged in a row along the first direction a. The large surfaces 120 of two adjacent single cells 12 in each row are bonded together, so that the adjacent single cells 12 are fixed, and the single cells 12 in each row are connected as a whole.

[0055] In addition, the plurality of single cells 12 are arranged in at least one column. When the single cells 12 of the battery assembly are arranged in multiple columns, the multiple columns of single cells 12 are arranged along the second direction b. The small faces 122 of two adjacent single cells 12 along the second direction b are arranged opposite to each other. The first direction a and the second direction b are arranged crosswise. Optionally, the first direction a and the second direction b are perpendicular to each other. Figure 3 In a specific example shown, the battery assembly includes two columns of single cells 12, and the two columns of single cells 12 are adjacently arranged along the second direction b.

[0056] The frame clamps the two ends of the battery assembly in the second direction b, that is, the frame positions the plurality of single batteries 12 in the battery assembly along two dimensions, the first direction a and the second direction b.

[0057] The box body includes a frame, which includes a first enclosure 100 and a second enclosure 101 opposite to each other along a first direction a. The first enclosure 100 and the second enclosure 101 respectively press the two ends of the battery assembly in the first direction a, and provide a certain compression force and compression stroke to the battery assembly to achieve clamping and limiting in the second direction a; the frame also includes a third enclosure 102 and a fourth enclosure 103 opposite to each other along a second direction b. The third enclosure 102 and the fourth enclosure 103 respectively press the two ends of the battery assembly in the second direction b to achieve size limiting in the second direction b.

[0058] The first enclosure panel 100, the third enclosure panel 102, the second enclosure panel 101 and the fourth enclosure panel 103 are fastened and connected in sequence. Specifically, each adjacent two of the first enclosure panel 100, the third enclosure panel 102, the second enclosure panel 101 and the fourth enclosure panel 103 are directly locked by fastening components 14, that is, they are fastened and connected in sequence without the need for connection through auxiliary components such as fixing ribs.

[0059] Optionally, the fastening member 14 can be a fastening bolt. Taking the fastening connection between the first enclosure 100 and the third enclosure 102 as an example, the end of the first enclosure 100 along the second direction b and the end of the third enclosure 102 along the first direction a are both provided with connecting holes. The fastening bolt passes through the corresponding connecting holes of the first enclosure 100 and the third enclosure 102 and locks the first enclosure 100 and the third enclosure 102 to each other.

[0060] Similarly, after positioning the first enclosure 100, the third enclosure 102, the second enclosure 101 and the fourth enclosure 103 by a special fixture, they are fastened and connected in sequence to complete the assembly of the frame. Compared with the solution of welding or connecting adjacent enclosures with fixed ribs, it not only simplifies the frame structure and reduces the frame cost, but also reduces the difficulty of frame assembly, improves the convenience and efficiency of frame assembly.

[0061] Therefore, the frame is arranged around the battery assembly, so that the battery assembly is circumferentially positioned through the frame. The frame presses the battery assembly at both ends of the first direction a and at both ends of the second direction b, so that the large surfaces 120 of each column of single cells 12 are pressed tightly, avoiding the movement and misalignment of each single cell 12, thereby improving the positioning reliability and accuracy of the box for the battery assembly.

[0062] In an optional scheme of this embodiment, the battery box 1 also includes an elastic adhesive 16, and an elastic adhesive 16 is bonded between every two adjacent single cells 12 along the first direction a. In other words, when observed along the first direction a, an elastic adhesive 16 is provided between every two adjacent single cells 12, and the two cells are bonded to each other through the elastic adhesive 16 therebetween.

[0063] Thus, by providing the elastic adhesive member 16 , the adjacent single batteries 12 can be positioned and fixed. In addition, after the battery box 1 is assembled, the elastic adhesive member 16 can also play a buffering and protective role between the adjacent single batteries 12 because of its elasticity.

[0064] Optionally, the elastic adhesive member 16 is foam or sponge with adhesive on both sides.

[0065] In this embodiment, the elastic adhesive member 16 is plate-shaped and fits the large surface 120 of the single battery 12 . The elastic adhesive member 16 can fully and evenly bond, fix, and buffer the large surface 120 of the single battery 12 .

[0066] Specifically, each column of single cells 12 of the battery assembly is bonded and fixed into a row one by one by elastic adhesives 16, and then the frame and the battery assembly in the frame are positioned and clamped along the first direction a according to a certain compression force and compression stroke by a special fixture. Furthermore, the frame can position the battery assembly along the second direction b according to its own size, thereby completing the positioning and installation of the battery assembly relative to the frame.

[0067] In this embodiment, the first enclosure 100 and the second enclosure 101 both include an enclosure body 1000 and a flange portion 1001. The enclosure body 1000 is connected to the flange portion 1001 at both ends of the first direction a, so that the structural strength of the first enclosure 100 and the second enclosure 101 is improved compared to the flat plate shape.

[0068] The flange portions 1001 at one end of the first enclosure 100 and the second enclosure 101 along the first direction a are both in contact with and fastened to the third enclosure 102. That is, by providing the flange portions 1001, the strength and convenience of the fastening connection between the first enclosure 100 and the third enclosure 102, as well as the strength and convenience of the fastening connection between the second enclosure 101 and the third enclosure 102 are improved.

[0069] The flange portions 1001 at the other ends of the first enclosure 100 and the second enclosure 101 along the first direction a are both attached to and fastened to the fourth enclosure 103. That is, by providing the flange portions 1001, the strength and convenience of the fastening connection between the first enclosure 100 and the fourth enclosure 103, as well as the strength and convenience of the fastening connection between the second enclosure 101 and the fourth enclosure 103 are improved.

[0070] Optionally, in order to facilitate the transportation and adjustment of the battery box 1, a handle 13 is also installed on the box body. Further, a handle connection seat 17 is fastened to the fastening connection between the flange portion 1001 of the first enclosure 100 and the third enclosure 102, and the handle 13 is installed on the handle connection seat 17, so that the handle connection seat 17 can not only provide an installation position for the handle 13, but also can strengthen the connection reliability between the first enclosure 100 and the third enclosure 102.

[0071] Furthermore, the handle connection seat 17 can also be fastened to the fastening connection between the flange portion 1001 of the second enclosure 101 and the third enclosure 102, and the handle 13 can be installed on the handle connection seat 17, which can further improve the convenience of carrying and adjusting the battery box 1.

[0072] In an optional solution of this embodiment, the box body also includes a first cover plate 104 and a second cover plate 105, which are respectively arranged at the two end openings of the frame in the third direction c, so that the box body is surrounded by the first cover plate 104, the second cover plate 105 and the frame.

[0073] The first direction a, the second direction b and the third direction c are arranged crosswise in pairs. Optionally, the first direction a, the second direction b and the third direction c are arranged perpendicularly in pairs.

[0074] The first cover plate 104 and the second cover plate 105 each include a cover plate body 1040 and a cover plate folded edge 1041, the cover plate folded edge 1041 is arranged around the cover plate body 1040, and the first enclosure 100, the second enclosure 101, the third enclosure 102 and the fourth enclosure 103 are fastened to the cover plate folded edge 1041 of at least one of the first cover plate 104 and the second cover plate 105.

[0075] Specifically, one of the first cover plate 104 and the second cover plate 105 is used as the bottom plate of the box body, and each of the first enclosure 100, the second enclosure 101, the third enclosure 102 and the fourth enclosure 103 can be fastened only to the cover folded edge 1041 of the first cover plate 104, or only to the cover folded edge 1041 of the second cover plate 105, or to both the cover folded edge 1041 of the first cover plate 104 and the cover folded edge 1041 of the second cover plate 105.

[0076] As a specific example, Figure 1 , such as 3 to Figure 5 as well as Fig. 9 and Fig.10 As shown, the second cover plate 105 is used as a bottom plate, and the first enclosure 100 and the second enclosure 101 are both fastened to the cover plate folding edge 1041 of the second cover plate 105. The fourth enclosure 103 is integrally formed with the cover plate folding edge 1041 of the second cover plate 105, and the cover plate folding edge 1041 of the first enclosure 104, the flanged edge 1001 of the first enclosure 100, and the flanged edge 1001 of the second enclosure 101 are all fastened to the fourth enclosure 103. The third enclosure 102 is fastened to the cover plate folding edge 1041 of the second cover plate 105, and the third enclosure 102 and the cover plate folding edge 1041 of the first enclosure 104 are spaced apart along the third direction c, and the flanged edge 1001 of the first enclosure 100 and the flanged edge 1001 of the second enclosure 101 are both fastened to the third enclosure 102.

[0077] Optionally, in order to ensure insulation between the box and the battery assembly and avoid short circuit between the two, an insulating partition 25 is provided between the battery assembly and the first enclosure 100, between the second enclosure 101, between the third enclosure 102, between the fourth enclosure 103, between the first cover plate 104 and between the second cover plate 105.

[0078] In an optional scheme of this embodiment, the battery box 1 also includes a mounting shell 11 and a control circuit board 24. The mounting shell 11 is connected to one end of the box body along the second direction b. The mounting shell 11 and the frame enclose an installation space. The control circuit board 24 is arranged in the installation space and connected to the mounting shell 11. That is, the mounting shell 11 is used to accommodate and fix the control circuit board 24.

[0079] The battery box 1 further includes a conductive component, which includes a plurality of output pole pieces 22 . The output pole pieces 22 are conductive.

[0080] The battery box 1 also includes an insulating fixing assembly. The output pole piece 22 electrically connects the control circuit board 24 and a pole of a single battery 12. The pole of the single battery 12 can be a positive pole or a negative pole.

[0081] Specifically, the multiple output pole pieces 22 include a first output pole piece 22e and a second output pole piece 22f. The first output pole piece 22e is electrically connected to the control circuit board 24 and the negative pole piece of a single battery 12. The second output pole piece 22f is electrically connected to the control circuit board 24 and the negative and positive pole pieces of a single battery 12, thereby electrically connecting the battery assembly to the control circuit board 24 through the first output pole piece 22e and the second output pole piece 22f.

[0082] Multiple output pole pieces 22 are connected to the frame through an insulating fixing component, that is, the first output pole piece 22e and the second output pole piece 22f are connected to the frame through an insulating fixing component, so that the first output pole piece 22e and the second output pole piece 22f are fixed on the frame, so as to stably connect with the control circuit board 24 using a wiring harness, etc., and avoid short circuit with the box.

[0083] Optionally, the mounting shell 11 is provided with a first mounting hole and a second mounting hole, a power connection interface 150 is installed in the first mounting hole, and a communication interface 151 is installed in the second mounting hole, and the power connection interface 150 and the communication interface 151 are both electrically connected to the control circuit board 24, wherein the power connection interface 150 is used to electrically connect to other battery boxes 1 or electrical equipment, and the communication interface 151 is used to electrically connect to an external communication network.

[0084] In an optional scheme of this embodiment, the mounting shell 11 includes a mounting plate portion 110 and a mounting folded edge 111. The mounting plate portion 110 is arranged relative to the third enclosure 102 along the second direction b, and the mounting folded edge 111 is arranged around the mounting plate portion 110, so that the mounting shell 11 is groove-shaped.

[0085] like Figures 8 to 10 As shown, the cover body 1040 of the first cover plate 104 is attached to and fastened with the mounting fold 111, the cover body 1040 of the second cover plate 105 is provided with a positioning hole 1050 at the edge within the mounting space, and the mounting fold 111 is provided with a positioning tongue 112, and the positioning tongue 112 is clamped with the side of the cover fold 1041 of the second cover plate 105 away from the mounting plate portion 110 at the positioning hole 1050.

[0086] Specifically, the positioning tongue 112 is hook-shaped, and the positioning tongue 112 is first pushed along the second direction through the positioning hole 1050 to the side of the cover fold 1041 of the second cover 105 away from the mounting plate portion 110, and then the mounting shell 11 is pushed along the first direction a, so that the positioning tongue 112 and the cover fold 1041 of the second cover 105 are engaged, and the initial positioning of the mounting shell 11 relative to the box body can be achieved. Then, the connection hole on the cover body 1040 of the first cover 104 is aligned with the connection hole on the mounting fold 111 of the mounting shell 11 and locked by tightening bolts, and the positioning installation of the mounting shell 11 relative to the box body can be completed. It can be seen that the positioning installation between the two is very convenient.

[0087] In the optional solution of this embodiment, Figure 5 and Figure 6As shown, the third enclosure 102 is provided with a supporting portion 1020 in the installation space. In other words, the supporting portion 1020 is provided on the third enclosure 102 and extends into the installation space. Optionally, the supporting portion 1020 is formed by cutting part of the third enclosure 102 and folding it toward the installation space.

[0088] The insulating fixing assembly includes a plurality of insulating fasteners 23 , which are connected one by one between the supporting portion 1020 and the plurality of output pole pieces 22 , so that each output pole piece 22 is fixed to the supporting portion 1020 by a corresponding insulating fastener 23 .

[0089] Optionally, the insulating fastener 23 is an insulating stud.

[0090] At least one second output pole piece 22f among the multiple output pole pieces 22 is directly or indirectly electrically connected to the control circuit board 24 and the positive pole of a single battery 12, and at least one first output pole piece 22e among the multiple output pole pieces 22 is directly or indirectly electrically connected to the control circuit board 24 and the negative pole of another single battery 12.

[0091] like Figure 5 and Figure 6 As shown, a first output pole piece 22e is welded to the negative pole of a single battery 12, and another first output pole piece 22e is welded to the first output pole piece 22e, so that the two first output pole pieces 22e are both connected to the negative pole of the same single battery 12, and the two first output pole pieces 22e are fixed to the supporting portion 1020 by two insulating fasteners 23, one of which is directly connected to the negative pole of the single battery 12, and the other is indirectly connected to the negative pole of the single battery 12. Therefore, one of the two first output pole pieces 22e can be selected to be electrically connected to the control circuit board 24 according to actual needs, so that the negative pole of the single battery 12 is electrically connected to the control circuit board 24 through the selected first output pole piece 22e, thereby providing a structural basis for realizing compatible design. Similarly, the second output pole piece 22f can also be configured as multiple (not shown in the figure).

[0092] In an optional solution of this embodiment, the box body further includes a first distance connection member 18, and the first distance connection member 18 is abutted between the cover plate folding edge 1041 of the first cover plate 104 and the mounting plate portion 110 along the second direction b, so that the frame and the mounting plate portion 110 maintain a first interval along the second direction b. The first distance connection member 18 is not only conducive to strengthening the strength of the mounting shell 11 and maintaining its shape, but also can improve the connection reliability between the mounting shell 11 and the box body.

[0093] Optionally, in order to optimize the connection position between the first distance connecting member 18 and the cover fold 1041 of the first cover plate 104, a connecting ear 1042 can be set adjacent to the cover fold 1041 of the first cover plate 104 and the installation space, and the first distance connecting member 18 and the connecting ear 1042 can be fastened together.

[0094] The box body also includes a second distance connecting member 19, and the control circuit board 24 is connected to the mounting plate portion 110 through the second distance connecting member 19, so that the control circuit board 24 and the mounting plate portion 110 maintain a second interval along the second direction b, wherein, in order to prevent the control circuit board 24 and the mounting shell 11 from short circuiting, the second distance connecting member 19 can be configured to have insulation, thereby realizing the positioning and installation of the control circuit board 24 in the installation space through the second distance connecting member 19.

[0095] The second interval is smaller than the first interval, so that the control circuit board 24 is spaced apart from the third enclosure 102 and the mounting plate portion 110 along the second direction b, and the interval between the control circuit board 24 and the third enclosure 102 is sufficient for installing the supporting portion 1020, the output pole piece 22 and the insulating fixing assembly.

[0096] Optionally, the first distance connection member 18 and the second distance connection member 19 can be provided in plurality to improve the reliability of the distance support.

[0097] Optionally, both the first distance connection member 18 and the second distance connection member 19 may be distance bolts.

[0098] In an optional scheme of this embodiment, the conductive component also includes a connecting electrode 21, and the positive electrode column of one single cell 12 is electrically connected to the negative electrode column of another adjacent single cell 12 through the connecting electrode 21, so that all the single cells 12 in the battery assembly are connected in series in sequence, and the battery assembly realizes negative output through the first output electrode 22e, and realizes positive output through the second output electrode 22f.

[0099] The battery box 1 also includes an insulating bracket 20, which is positioned and connected to the pole surface 121 of the battery assembly, and the insulating bracket 20 can be an injection molded part. The insulating bracket 20 is provided with a mounting groove on the side away from the battery assembly, and the connecting pole piece 21 is adaptively arranged in the mounting groove. The position of the mounting groove is set corresponding to the position of the negative pole column and the positive pole column of the two single batteries 12 to be connected, so that the connecting pole piece 21 can be fixed by the insulating bracket 20, and the connecting pole piece 21 is limited to the position corresponding to the negative pole column and the positive pole column to be connected.

[0100] Specifically, the connecting electrode piece 21 and the output electrode piece 22 are first fixed on the insulating bracket 20, so that the connecting electrode piece 21, the output electrode piece 22 and the insulating bracket 20 are integrated into one. Then the insulating bracket 20 is installed on the battery assembly. Then, after the insulating bracket 20 and the battery assembly are roughly positioned and fixed, the connecting electrode piece 21 and the output electrode piece 22 can be positioned with the corresponding pole within the allowable accuracy range. Finally, the connecting electrode piece 21 is welded to the corresponding pole, and the output electrode piece 22 is welded to the corresponding pole.

[0101] It can be seen that the insulating bracket 20 can not only improve the assembly efficiency and assembly accuracy of the connecting pole piece 21 and the output pole piece 22 relative to the battery assembly, but also ensure that the pole surface 121 of the single battery 12 except the pole is insulated relative to the connecting pole piece 21 and the output pole piece 22.

[0102] Optionally, the connecting pole piece 21 and the output pole piece 22 are both made of aluminum bars.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them; although the utility model is described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein by equivalent; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the utility model. In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments instead of other features, the combination of features of different embodiments means that they are within the scope of the utility model and form different embodiments. For example, any one of the embodiments claimed for protection can be used in any combination. The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the utility model, and should not be regarded as an admission or in any form of implication that the information constitutes prior art known to those skilled in the art.

Claims

1. A battery box, characterized in that: Including box and battery assembly; The battery assembly includes a plurality of single cells, and the plurality of single cells are arranged in a row in a first direction with their large surfaces facing each other; The box body includes a frame, and the frame includes a first enclosure plate and a second enclosure plate that are opposite to each other along a first direction, and the first enclosure plate and the second enclosure plate respectively press two ends of the battery assembly in the first direction; The frame further includes a third enclosure plate and a fourth enclosure plate opposite to each other along a second direction, the third enclosure plate and the fourth enclosure plate respectively press two ends of the battery assembly in the second direction, and the first direction and the second direction are arranged crosswise; The first enclosure panel, the third enclosure panel, the second enclosure panel and the fourth enclosure panel are fastened and connected in sequence.

2. The battery box according to claim 1, characterized in that: Also includes an elastic adhesive member; The elastic adhesive member is bonded between every two adjacent single batteries along the first direction.

3. The battery box according to claim 2, characterized in that: The elastic adhesive member is in a plate shape, and the plate-shaped elastic adhesive member is attached to the large surface of the single battery.

4. The battery box according to any one of claims 1 to 3, characterized in that: The first enclosure plate and the second enclosure plate each include an enclosure plate body and a flange portion, and both ends of the enclosure plate body in the first direction are connected to the flange portion; The flanged portions at one end of the first enclosure plate and the second enclosure plate along the first direction are both attached to and fastened to the third enclosure plate; The flange portions at the other ends of the first enclosure panel and the second enclosure panel along the first direction are both in contact with and fastened to the fourth enclosure panel.

5. The battery box according to claim 4, characterized in that: The box body further comprises a first cover plate and a second cover plate, wherein the first cover plate and the second cover plate are respectively arranged at two end openings of the frame in the third direction, and the first direction, the second direction and the third direction are arranged crosswise in pairs; The first cover plate and the second cover plate each include a cover plate body and a cover plate folded edge, the cover plate folded edge is arranged around the cover plate body, and the first enclosure plate, the second enclosure plate, the third enclosure plate and the fourth enclosure plate are fastened to the cover plate folded edge of at least one of the first cover plate and the second cover plate.

6. The battery box according to claim 5, characterized in that: It also includes a mounting shell and a control circuit board, wherein the mounting shell is connected to one end of the box body along the second direction, the mounting shell and the frame enclose an installation space, and the control circuit board is arranged in the installation space and connected to the mounting shell; The battery box further comprises a conductive component, wherein the conductive component comprises a plurality of output pole pieces; The battery box also includes an insulating fixing assembly, the output pole piece electrically connects the control circuit board and a pole of one of the single cells, and a plurality of the output pole pieces are connected to the frame via the insulating fixing assembly.

7. The battery box according to claim 6, characterized in that: The mounting shell comprises a mounting plate portion and a mounting folded edge, wherein the mounting plate portion is arranged relative to and spaced from the third enclosure plate along the second direction, and the mounting folded edge is arranged around the mounting plate portion; The cover plate body of the first cover plate is in contact with and fastened to the mounting fold; The cover body of the second cover is provided with a positioning hole at the edge within the installation space, and the installation fold is provided with a positioning tongue, which is clamped with the cover fold of the second cover away from the installation plate part at the positioning hole.

8. The battery box according to claim 6, characterized in that: The third enclosure is provided with a supporting portion in the installation space, and the insulating fixing assembly includes a plurality of insulating fasteners, and the plurality of insulating fasteners are connected between the supporting portion and the plurality of output pole pieces in a one-to-one correspondence; At least one of the plurality of output pole pieces is electrically connected to the control circuit board and the positive pole of one of the single cells, and at least one of the plurality of output pole pieces is electrically connected to the control circuit board and the negative pole of another of the single cells.

9. The battery box according to claim 7, characterized in that: The box body further comprises a first distance connection member, the first distance connection member being held between the cover plate folded edge of the first cover plate and the mounting plate portion along the second direction so as to keep a first interval between the frame and the mounting plate portion along the second direction; The box body further includes a second distance connection member, and the control circuit board is connected to the mounting plate portion through the second distance connection member, so that the control circuit board and the mounting plate portion maintain a second interval along the second direction; The second interval is smaller than the first interval.

10. The battery box according to claim 6, characterized in that: The conductive assembly further includes a connecting electrode, through which the positive electrode column of one of the single cells is electrically connected to the negative electrode column of another adjacent single cell; The battery box also includes an insulating bracket, which is positioned and connected to the pole surface of the battery assembly. A mounting groove is provided on the side of the insulating bracket facing away from the battery assembly, and the connecting electrode is adaptively arranged in the mounting groove.

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