Battery of electric motorcycle and battery cell bracket

Abstract

The invention discloses an electric motorcycle battery and a battery cell support, the electric motorcycle battery comprises a battery cell module, a circuit protection board and a connection socket, the battery cell module comprises a battery cell support and a plurality of battery packs; each battery pack comprises at least one battery monomer, and two poles of each battery monomer are positioned at the same end; the battery cell bracket is provided with a battery cell mounting cavity embedded with a current-carrying sheet structure, each battery pack is mounted in the battery cell mounting cavity, and each battery pack is connected in series through the current-carrying sheet structure to form a battery module; the circuit protection board is arranged outside the battery cell mounting cavity and is connected in series with the battery module; the connecting socket is provided with a communication line, a total positive power line and a total negative power line; the communication line is connected with a communication interface of the circuit protection board and acquires parameter information of the battery module acquired by the circuit protection board; the total positive power line is communicated with the total positive end part of the battery module, and the total negative power line is communicated with the negative electrode of the circuit protection board. The current-carrying sheets are welded on the same side, the situation that the battery is installed reversely is avoided, the polarity of the battery does not need to be considered when the battery is installed, the manufacturing process is simplified, the assembling efficiency is improved, the high-power application scene can be met, the charging speed is high, the discharging power is high, and the overall manufacturing cost and the control difficulty are low.

Description

Technical Field

[0001] The invention belongs to the field of batteries, and in particular relates to an electric motorcycle battery and a battery core bracket. Background Art

[0002] Two-wheeled electric vehicles can be divided into electric bicycles and electric motorcycles. However, because electric motorcycles have higher requirements for maximum speed, motor power, and battery voltage, the lithium batteries of electric bicycles cannot be directly used on electric motorcycles. Electric motorcycle batteries require higher voltages and greater charging and discharging power. Electric bicycle lithium batteries generally use 18650 lithium batteries, which have the advantages of good consistency and mature manufacturing technology. But if they are used on electric motorcycle batteries, it means that they require more series, more parallels, more structural parts, and more complex assembly processes. Summary of the invention

[0003] The present invention provides an electric motorcycle battery and a battery cell bracket, which reduce the number of series and parallel connections of battery cells and the number of structural parts, and are used to solve the deficiencies described in the above-mentioned prior art.

[0004] The technical solution adopted by the present invention is: An electric motorcycle battery comprises a cell module, a circuit protection board and a connection socket, wherein the cell module comprises a cell support and a plurality of battery packs; each battery pack comprises at least one battery cell, and the two poles of each battery cell are located at the same end; the cell support is provided with a cell installation cavity with an embedded current-carrying sheet structure, each battery pack is installed in the cell installation cavity, and each battery pack is connected in series to form a battery module via the current-carrying sheet structure; the circuit protection board is arranged outside the cell installation cavity and is connected in series with the battery module, and the connection socket is provided with a communication line, a total positive power line and a total negative power line; the communication line is connected to the communication interface of the circuit protection board and obtains parameter information of the battery module collected by the circuit protection board; the total positive power line is connected to the total positive end of the battery module, and the total negative power line is connected to the negative pole of the circuit protection board. The battery cells used have higher specific energy, and the negative electrode area at the positive end is larger, so they can be welded on the same side as the current-carrying sheet structure, avoiding the possibility of reverse installation of the battery cell. The battery cell holder with a built-in current-carrying sheet structure can be directly assembled with the single battery and welded on the same side, which simplifies the production process, improves production efficiency, and can use fewer batteries and a smaller number of series and parallel connections to meet the power requirements of the electric motorcycle.

[0005] As a preferred solution of the present invention, the end of the current-carrying sheet structure embedded in the battery cell installation cavity is provided with a positive electrode welding clearance hole, a negative electrode welding clearance hole, a total positive current-carrying clearance hole, a total negative current-carrying clearance hole and a collection clearance hole. The positive electrode welding clearance hole provides an operating space for welding the positive electrode of the current-carrying sheet with the single battery, and the negative electrode welding clearance hole provides an operating space for welding the negative electrode of the current-carrying sheet with the single battery on the same side. The positive electrode and negative electrode on the same side of each battery cell correspond to positive electrode welding clearance holes and negative electrode welding clearance holes; the total positive current-carrying clearance hole exposes the total positive lead-out terminal of the battery module that has been welded in series and parallel, the total negative current-carrying clearance hole exposes the total negative lead-out terminal of the battery module that has been welded in series and parallel, and the collection clearance hole allows the circuit protection board to collect the circuit parameter signal of the battery module from the current-carrying sheet structure.

[0006] As a preferred solution of the present invention, the current-carrying sheet structure includes a total positive current-carrying sheet, a first connection current-carrying sheet, a second connection current-carrying sheet and a total load current-carrying sheet; the total positive current-carrying sheet is welded to the positive electrode position of the first battery pack through a positive electrode welding clearance hole, and the total positive lead-out end of the total positive current-carrying sheet corresponds to the total positive current-carrying clearance hole; the total positive lead-out end is fixedly connected to the total positive power line passing through the total positive current-carrying clearance hole, and the total positive power line is provided with a connection terminal for easy electrical connection; The total load flow sheet is welded to the negative electrode of the last battery pack through the negative electrode welding clearance hole, and the total negative lead-out end of the total load flow sheet corresponds to the total load flow clearance hole; the total load flow sheet is connected to the positive terminal of the circuit protection board passing through the total load flow clearance hole; the total negative power line is electrically connected to the negative electrode of the circuit protection board, and the total negative power line is provided with a connection terminal for easy electrical connection; The first connecting current-carrying sheet is provided with a first positive electrode connecting portion, a first negative electrode connecting portion and a first connecting bridge; the first connecting bridge connects the first positive electrode connecting portion and the first negative electrode connecting portion and the first connecting bridge is suspended in the air without contacting the battery cell and only serves as a conductive member; the first positive electrode connecting portion is welded to the positive electrode position of the battery pack through the positive electrode welding clearance hole, and the first negative electrode connecting portion is welded to the negative electrode position of the adjacent battery pack in the same column through the negative electrode welding clearance hole; the battery packs in the same column are connected in series through a plurality of first connecting current-carrying sheets; The second connecting current-carrying sheet is provided with a second positive electrode connecting portion, a second negative electrode connecting portion, and a second connecting bridge; the second connecting bridge connects the second positive electrode connecting portion and the second negative electrode connecting portion; and the second connecting bridge is suspended in the air and does not contact the battery cell, and only serves as a conductive member; The second positive electrode connection part is welded to the positive electrode position of the battery pack through the positive electrode welding clearance hole, and the second negative electrode connection part is welded to the negative electrode position of the adjacent battery pack through the negative electrode welding clearance hole; the adjacent battery packs are connected in series through a plurality of second connecting current-carrying sheets; The total positive lead, the first connecting bridge, the second connecting bridge and the total negative lead all have corresponding collection clearance holes for electrical connection with the collection pole piece on the circuit control board, and the total positive lead, the first connecting bridge, the second connecting bridge and the total negative lead are all provided with rivet nuts fixed to the collection pole piece.

[0007] As a preferred solution of the present invention, the total positive current-carrying sheet, the first positive electrode connection part, and the second positive electrode connection part are provided with a positive electrode thinning welding area at the position corresponding to the positive electrode position of the battery cell; the total current-carrying sheet, the first negative electrode connection part, and the second negative electrode connection part are provided with a negative electrode thinning welding area at the position corresponding to the negative electrode position of the battery cell. Welding at the thinning welding area can achieve a better welding effect, and each current-carrying sheet is made of a thicker copper sheet, which can meet the requirements of high-rate discharge of the battery.

[0008] As a preferred solution of the present invention, the battery holder and the current carrier structure are integrally injection molded, and the current carrier structure is directly injection molded in the battery holder according to the designed series-parallel structure, so that it is only necessary to directly spot weld after installing the single battery, which simplifies the assembly and the positive and negative electrodes of the single battery are welded to the current carrier on the same side. In order to separate the battery cells from contacting each other, the battery cell installation cavity is arranged into a plurality of rows of spaced battery cell installation channels. One battery cell installation channel is loaded with one single battery.

[0009] As a preferred solution of the present invention, the end face of the circuit protection board facing the battery module is provided with a collecting electrode, the collecting electrode corresponds to the collecting clearance hole one by one, and the collecting electrode is connected to the total positive lead-out terminal, the first connecting bridge, the second connecting bridge, and the total negative lead-out terminal. The protruding setting of the collecting electrode will be inserted into the corresponding collecting clearance hole and electrically connected to the corresponding collecting point of the current-carrying sheet structure. The fixing method can be fixed with screws and nuts, and a rivet nut is preset at each collecting potential of the current-carrying sheet.

[0010] As a preferred solution of the present invention, the connection socket is installed on the battery box cover, the circuit protection board and the battery module are installed in the battery box body, and the battery box cover and the battery box body are welded together at the joint, and ultrasonic welding is used to ensure good overall sealing. The battery box cover and the battery box body are both insulating materials, and plastic materials can be used, and the connection socket is provided with a waterproof gasket at the installation position of the battery box cover.

[0011] The present invention also provides a battery cell bracket, which comprises a battery cell enclosure, a battery cell spot welding clearance plate and a current-carrying sheet structure; a battery cell spot welding clearance plate is arranged in a battery installation channel formed by the battery cell enclosure, and the battery cell spot welding clearance plate and the battery installation channel constitute a battery cell installation cavity; the current-carrying sheet structure is arranged on the inner side of the end of the battery cell spot welding clearance plate facing the battery cell installation cavity; a positive electrode welding clearance hole, a negative electrode welding clearance hole, a total positive current-carrying clearance hole, a total negative current-carrying clearance hole and a collection clearance hole are arranged on the battery cell spot welding clearance plate; the position corresponding to the current-carrying sheet structure and the positive electrode welding clearance hole and the negative electrode welding clearance hole is used as a welding area; the position corresponding to the current-carrying sheet structure and the total positive current-carrying clearance hole is the total positive lead-out terminal; the position corresponding to the current-carrying sheet structure and the total negative current-carrying clearance hole is the total negative lead-out terminal; the position corresponding to the current-carrying sheet structure and the collection clearance hole is the collection point.

[0012] As a preferred solution of the present invention, the cell enclosure, the cell spot welding clearance plate and the current carrier structure are integrally injection molded.

[0013] As a preferred solution of the present invention, the current-carrying sheet structure includes a total positive current-carrying sheet, a first connecting current-carrying sheet, a second connecting current-carrying sheet and a total load current-carrying sheet; the total positive current-carrying sheet corresponds to the first positive electrode welding clearance hole, and the total positive lead-out end of the total positive current-carrying sheet corresponds to the total positive current-carrying clearance hole; the total load current-carrying sheet corresponds to the last negative electrode welding clearance hole, and the total negative lead-out end of the total load current-carrying sheet corresponds to the total load current clearance hole; The first connecting current-carrying sheet is provided with a first positive electrode connecting portion, a first negative electrode connecting portion and a first connecting bridge; the first connecting bridge connects the first positive electrode connecting portion and the first negative electrode connecting portion; the first positive electrode connecting portion corresponds to the positive electrode welding clearance hole, and the first negative electrode connecting portion corresponds to the negative electrode welding clearance hole adjacent to the same column; The second connecting current-carrying sheet is provided with a second positive electrode connecting portion, a second negative electrode connecting portion and a second connecting bridge; the second connecting bridge connects the second positive electrode connecting portion and the second negative electrode connecting portion; the second positive electrode connecting portion corresponds to the positive electrode welding clearance hole, and the second negative electrode connecting portion corresponds to the adjacent column of negative electrode welding clearance holes; The total positive lead-out terminal, the first connecting bridge, the second connecting bridge and the total negative lead-out terminal are all provided with corresponding collection holes.

[0014] The present invention uses the positive and negative electrodes of a large battery and the current carrier sheet to be welded on the same side in series and parallel to form a group, and can obtain sufficient capacity using fewer single cells. Compared with the traditional 18650 battery, it has higher energy density, higher grouping efficiency, and lower system cost. The current carrier sheet of the present invention is welded on the same side, so the battery will not be installed upside down, and the problem of battery polarity does not need to be considered when loading, which simplifies the production process, improves assembly efficiency, can meet high-power application scenarios, has fast charging speed, high discharge power, and low overall production cost and control difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 It is an exploded view of the present invention.

[0018] Figure 3 This is a structural schematic diagram of the present invention in which the battery box is omitted.

[0019] Figure 4 The present invention omits the battery box and the connection socket. Figure 1 .

[0020] Figure 5 The present invention omits the battery box and the connection socket. Figure 2 .

[0021] Figure 6 It is a structural schematic diagram of the battery module of the present invention.

[0022] Figure 7 It is a schematic diagram of the assembly of the current carrier structure and the battery pack of the present invention.

[0023] Figure 8 It is a structural schematic diagram of the current carrier structure of the present invention.

[0024] Fig. 9 The structure of the circuit protection board of the present invention is shown in FIG. Figure 1 .

[0025] Fig.10 The structure of the circuit protection board of the present invention is shown in FIG. Figure 2 .

[0026] Fig.11 It is a structural schematic diagram of the connection socket of the present invention.

[0027] Fig.12 The structure of the battery support of the present invention is shown in FIG. Figure 1 .

[0028] Fig.13 The structure of the battery support of the present invention is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1: An electric motorcycle battery, comprising a battery cell module 1, a circuit protection board 2, a connection socket 3 and a battery box; Fig.11 As shown, the connection socket 3 is provided with a communication line 31, a total positive power line 32 and a total negative power line 33; Figure 1 As shown, the connection socket 3 is installed on the battery box cover 41, the circuit protection board 2 and the battery module are installed in the battery box body 42, and the battery box cover 41 and the battery box body 42 are welded together at the joint, and ultrasonic welding is used to ensure good overall sealing. The battery box cover 41 and the battery box body 42 are both insulating materials, and plastic materials can be used, and the connection socket is provided with a waterproof gasket at the installation position of the battery box cover.

[0031] The battery module 1 includes a battery support 11 and a plurality of battery packs 12. In this embodiment, 20 battery packs are taken as an example. Each battery pack 12 includes at least one battery cell 121. Figure 2 and Figure 8 As shown, this embodiment takes two battery cells as an example, that is, the battery cells of the same battery pack are connected in parallel, and the battery cells of different battery packs are connected in series. The specific number of series-parallel connections depends on the number of current-carrying chips, and is built-in according to actual requirements.

[0032] Each battery cell 121 uses a large battery, and this embodiment uses a 4695 cylindrical battery; the positive and negative electrode areas of the 4695 cylindrical battery are larger, so the 4695 cylindrical battery can be welded on the same side as the current carrier; that is, the two poles of the battery cell are located at the same end.

[0033] The cell support 11 is provided with a cell installation cavity with a current carrier structure 113 embedded therein. Fig.12 and Fig.13 As shown, the cell holder 11 and the current carrier structure are integrally injection molded, and the current carrier structure is directly injection molded in the cell holder according to the designed series-parallel structure. The cell installation cavity can be a full-through channel or a plurality of independent cell installation channels. This embodiment is demonstrated by taking a plurality of columns of spaced cell installation channels as an example, and a single battery is installed in one cell installation channel. Two adjacent cell installation channels serve as an installation channel for a battery pack, and share a current carrier.

[0034] Each battery pack 12 is installed in the battery cell installation cavity, and each battery pack 12 is connected in series via the current carrier structure 113 to form a battery module.

[0035] like Figure 2 , Figure 6 , Fig.12 As shown, the end of the current-carrying sheet structure 113 embedded in the battery cell installation cavity is provided with a positive electrode welding clearance hole 1112, a negative electrode welding clearance hole 1113, a total positive current-carrying clearance hole 1114, a total negative current-carrying clearance hole 1115 and a collection clearance hole 1116. The positive electrode welding clearance hole provides an operating space for welding the positive electrode of the current-carrying sheet with the single battery, and the negative electrode welding clearance hole 1113 provides an operating space for welding the negative electrode of the current-carrying sheet with the single battery on the same side. The positive electrode and negative electrode on the same side of each battery cell correspond to the positive electrode and negative electrode of the single battery. The total positive current-carrying clearance hole exposes the total positive lead-out terminal of the battery module that has been welded in series and parallel, and the total negative current-carrying clearance hole 1115 exposes the total negative lead-out terminal of the battery module that has been welded in series and parallel. The collection clearance hole 1116 allows the circuit protection board to collect the circuit parameter signal of the battery module from the current-carrying sheet structure.

[0036] like Figure 2 , Figure 6 , Figure 7 and Figure 8 As shown, the current-carrying sheet structure 113 includes a total positive current-carrying sheet 1131, a first connecting current-carrying sheet 1132, a second connecting current-carrying sheet 1133 and a total load current-carrying sheet 1134; the total positive current-carrying sheet 1131 is welded to the positive electrode position of the first battery pack through the positive electrode welding clearance hole 1112, and the total positive lead-out terminal 11311 of the total positive current-carrying sheet 1131 corresponds to the total positive current-carrying clearance hole 1114; the total positive lead-out terminal 11311 is fixedly connected to the total positive power line 32 passing through the total positive current-carrying clearance hole 1114, and the total positive power line 32 is provided with a connecting terminal for easy electrical connection; as shown Figure 3 As shown, The total load flow sheet 1134 is welded to the negative electrode position of the last battery pack through the negative electrode welding clearance hole 1113, and the total negative lead-out terminal 11341 of the total load flow sheet 1134 corresponds to the total load flow clearance hole 1115; the total load flow sheet 1134 is connected to the positive terminal of the circuit protection board 2 passing through the total load flow clearance hole 1115; the total negative power line 33 is electrically connected to the negative electrode 22 of the circuit protection board 2, and the total negative power line 33 is provided with a connection terminal for easy electrical connection; Figure 3 As shown; The first connecting current-carrying sheet 1132 is provided with a first positive electrode connecting portion 11321, a first negative electrode connecting portion 11322 and a first connecting bridge 11323; the first connecting bridge 11323 connects the first positive electrode connecting portion 1321 and the first negative electrode connecting portion 11322, and the first connecting bridge 11323 is suspended in the air and does not contact the battery cell, and only serves as a conductive member; the first positive electrode connecting portion 11321 is welded to the positive electrode position of the battery pack through the positive electrode welding clearance hole 1112, and the first negative electrode connecting portion 11322 is welded to the negative electrode position of the adjacent battery pack in the same column through the negative electrode welding clearance hole 1113; the battery packs in the same column are connected in series through a plurality of first connecting current-carrying sheets 1132; The second connecting current-carrying sheet 1133 is provided with a second positive electrode connecting portion 11331, a second negative electrode connecting portion 11332 and a second connecting bridge 11333; the second connecting bridge 11333 connects the second positive electrode connecting portion 11331 and the second negative electrode connecting portion 11332; and the second connecting bridge 11333 is suspended in the air and does not contact the battery cell, and only serves as a conductive member; The second positive electrode connection portion 11331 is welded to the positive electrode position of the battery pack through the positive electrode welding clearance hole 1112, and the second negative electrode connection portion 11332 is welded to the negative electrode position of the adjacent column of battery packs through the negative electrode welding clearance hole 1113; the adjacent columns of battery packs are connected in series through a plurality of second connecting current-carrying sheets 1133; The total positive lead 11311, the first connecting bridge 11323, the second connecting bridge 11333 and the total negative lead 11341 all have corresponding collection clearance holes 1116, and the total positive lead 11311, the first connecting bridge 11323, the second connecting bridge 11333 and the total negative lead 11341 are all provided with pressure riveting nuts fixed to the collection electrode piece, which are used to be electrically connected to the collection electrode piece 23 on the circuit control board 2, such as Fig. 9 and 10 As shown, the collecting electrode is arranged on the end face of the circuit protection board 2 facing the battery module, and the collecting electrode 23 corresponds to the collecting clearance hole 1116 one by one. A screw hole is reserved on each collecting electrode to facilitate each collecting electrode to be fixed with a screw and a rivet nut on each collecting point, so that the circuit protection board can collect data of the battery module, such as voltage, current, pressure difference, etc.

[0037] The circuit control board 2 is provided with a communication interface 21 connected with a communication line 31. The communication line has a plug for easy insertion into the communication interface. The electric motorcycle obtains parameter information of the battery module collected by the circuit protection board 2 through the communication line connected to the socket.

[0038] Each current-carrying sheet is made of thicker copper sheets, which can meet the needs of high-rate discharge of the battery. In order to achieve better welding effects, the total positive current-carrying sheet 1131, the first positive electrode connecting part 11321, and the second positive electrode connecting part 11331 are provided with positive electrode thinning welding areas corresponding to the positive electrode position of the battery cell; the total current-carrying sheet 1134, the first negative electrode connecting part 11322, and the second negative electrode connecting part 11332 are provided with negative electrode thinning welding areas corresponding to the negative electrode position of the battery cell.

[0039] During assembly, since the current-carrying sheet structure is directly integrally formed in the battery holder, it is only necessary to load the single cell into the battery installation cavity. There is no strict order in the process. The 4695 cylindrical battery pole is the positive pole, and the outer shell polarity is the negative pole. Except for the positive pole, the rest of the end face where the positive pole is located is the negative pole, so there is no need to consider the loading polarity. After assembly, the welding of the single cell and the current-carrying sheet structure is completed through the positive welding clearance holes 1112 and the negative welding clearance holes 1113 to complete the series-parallel battery module. After the battery module is welded, the circuit control board is installed, and the collection pole piece of the circuit control board is fixed to the collection point on the current-carrying sheet, and the positive pole of the circuit control board is electrically connected to the total negative lead-out terminal to realize the series connection of the battery module and the circuit control board. Finally, the connecting socket is installed, and the terminal on the total positive power line 32 is connected to the total positive lead-out terminal, and the terminal on the total negative power line 33 is connected to the negative end of the circuit control board. The plug of the communication line 31 is inserted into the communication interface of the circuit control board, such as Figure 4 and 5 As shown, the connecting socket is then installed on the battery box cover with bolts, and the battery module and the circuit control board are installed into the battery box body, and finally the battery box cover and the battery box body are welded with an ultrasonic welding machine.

[0040] The battery cell used in the present invention has a higher specific energy, and the negative electrode area at the positive end is larger, and can be welded on the same side as the current-carrying sheet structure, avoiding the possibility of reverse installation of the battery cell. The battery cell holder with a built-in current-carrying sheet structure can be directly assembled with the single battery and welded on the same side, which simplifies the production process, improves production efficiency, and can use a smaller number of batteries and a smaller number of series and parallel connections to meet the power requirements of the electric motorcycle.

[0041] For example, a 3.0Ah 18650 battery has a maximum charge current of 1C or 3A and a maximum discharge current of 3C or 9A; while a 33Ah 4695 battery has a maximum charge current of 4C or 132A and a maximum discharge current of 4C or 132A. In comparison, for batteries of the same capacity composed of the two batteries, the 4695 has a 3 times faster charge speed and a 1.33 times higher discharge power than the 18650.

[0042] Embodiment 2: The present invention also provides a battery support, such as Figure 6 , Fig.12 and Fig.13 As shown, the cell support 11 includes a cell enclosure 110, a cell spot welding clearance plate 111 and a current-carrying sheet structure 113; the cell enclosure 110, the cell spot welding clearance plate 111 and the current-carrying sheet structure 113 are integrally injection molded. A cell spot welding clearance plate 111 is provided in the battery installation channel formed by the cell enclosure 110, and the cell spot welding clearance plate 111 and the battery installation channel constitute a cell installation cavity; the current-carrying sheet structure 113 is arranged on the inner side of the end of the cell spot welding clearance plate 111 facing the cell installation cavity; the cell spot welding clearance plate 111 is provided with a positive electrode welding clearance hole 1112, a negative electrode welding clearance hole 1113, a total positive current-carrying clearance hole 1114, a total negative current-carrying clearance hole 1115 and a collection clearance hole 1116; the position corresponding to the current-carrying sheet structure and the positive electrode welding clearance hole 1112 and the negative electrode welding clearance hole 1113 is used as a waiting welding area; the position corresponding to the current-carrying sheet structure and the total positive current-carrying clearance hole 1114 is the total positive lead-out terminal 11311; the position corresponding to the current-carrying sheet structure and the total negative current-carrying clearance hole 1115 is the total negative lead-out terminal; the position corresponding to the current-carrying sheet structure and the collection clearance hole 1116 is the collection point.

[0043] like Figure 8 As shown, the current-carrying sheet structure 113 includes a total positive current-carrying sheet 1131, a first connecting current-carrying sheet 1132, a second connecting current-carrying sheet 1133 and a total load current-carrying sheet 1134; the total positive current-carrying sheet 1131 corresponds to the first positive electrode welding clearance hole 1112, the total positive lead-out terminal 11311 of the total positive current-carrying sheet 1131 corresponds to the total positive current-carrying clearance hole 1114; the total load current-carrying sheet 1134 corresponds to the last negative electrode welding clearance hole 1113, and the total negative lead-out terminal 11341 of the total load current-carrying sheet 1134 corresponds to the total load current clearance hole 1115; The first connecting current-carrying sheet 1132 is provided with a first positive electrode connecting portion 11321, a first negative electrode connecting portion 11322 and a first connecting bridge 11323; the first connecting bridge 11323 connects the first positive electrode connecting portion 1321 and the first negative electrode connecting portion 11322; the first positive electrode connecting portion 11321 corresponds to the positive electrode welding clearance hole 1112, and the first negative electrode connecting portion 11322 corresponds to the negative electrode welding clearance hole 1113 adjacent to the same column; The second connecting current-carrying sheet 1133 is provided with a second positive electrode connecting portion 11331, a second negative electrode connecting portion 11332 and a second connecting bridge 11333; the second connecting bridge 11333 connects the second positive electrode connecting portion 11331 and the second negative electrode connecting portion 11332; the second positive electrode connecting portion 11331 corresponds to the positive electrode welding clearance hole 1112, and the second negative electrode connecting portion 11332 corresponds to the negative electrode welding clearance hole 1113 in the adjacent column; The total positive lead terminal 11311 , the first connecting bridge 11323 , the second connecting bridge 11333 and the total negative lead terminal 11341 all have corresponding collection holes 1116 .

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric motorcycle battery, characterized in that: The invention comprises a cell module (1), a circuit protection board (2) and a connection socket (3), wherein the cell module (1) comprises a cell support (11) and a plurality of battery packs (12); each battery pack (12) comprises at least one battery cell (121), and the two poles of each battery cell (121) are located at the same end; the cell support (11) is provided with a cell installation cavity with a current carrier structure (113) embedded therein, and each battery pack (12) is installed in the cell installation cavity, and each battery pack (12) is connected to the current carrier structure (113) via the current carrier structure (113). ) are connected in series to form a battery module; the circuit protection board (2) is arranged outside the battery cell installation cavity and is connected in series with the battery module, and the connection socket (3) is provided with a communication line (31), a total positive power line (32) and a total negative power line (33); the communication line (31) is connected to the communication interface of the circuit protection board (2) and obtains parameter information of the battery module collected by the circuit protection board (2); the total positive power line (32) is connected to the total positive end of the battery module, and the total negative power line (33) is connected to the negative electrode of the circuit protection board (2).

2. The electric motorcycle battery according to claim 1, characterized in that: The end of the cell installation cavity where the current-carrying sheet structure (113) is embedded is provided with a positive electrode welding clearance hole (1112), a negative electrode welding clearance hole (1113), a total positive current clearance hole (1114), a total load current clearance hole (1115) and a collection clearance hole (1116).

3. The electric motorcycle battery according to claim 2, characterized in that: The current-carrying sheet structure (113) comprises a total positive current-carrying sheet (1131), a first connecting current-carrying sheet (1132), a second connecting current-carrying sheet (1133) and a total load current-carrying sheet (1134); the total positive current-carrying sheet (1131) is welded to the positive electrode of the first battery pack, and the total positive lead-out terminal (11311) of the total positive current-carrying sheet (1131) corresponds to the total positive current-carrying clearance hole (1114); the total load current-carrying sheet (1134) is welded to the negative electrode of the last battery pack, and the total negative lead-out terminal (11341) of the total load current-carrying sheet (1134) corresponds to the total load current-carrying clearance hole (1115); The first connecting current-carrying sheet (1132) connects the battery groups in the same column in series, and the second connecting current-carrying sheet (1133) connects the battery groups in adjacent columns in series; The first connecting current-carrying sheet (1132) is provided with a first positive electrode connecting portion (11321), a first negative electrode connecting portion (11322) and a first connecting bridge (11323); the first connecting bridge (11323) connects the first positive electrode connecting portion (1321) and the first negative electrode connecting portion (11322); the first positive electrode connecting portion (11321) is welded to the positive electrode position of the battery pack, and the first negative electrode connecting portion (11322) is welded to the negative electrode position of the adjacent battery pack in the same column; The second connecting current-carrying sheet (1133) is provided with a second positive electrode connecting portion (11331), a second negative electrode connecting portion (11332) and a second connecting bridge (11333); the second connecting bridge (11333) connects the second positive electrode connecting portion (11331) and the second negative electrode connecting portion (11332); the second positive electrode connecting portion (11331) is welded to the positive electrode position of the battery pack, and the second negative electrode connecting portion (11332) is welded to the negative electrode position of the battery pack in an adjacent column; The total positive current-carrying sheet (1131), the first positive electrode connection part (11321) and the second positive electrode connection part (11331) all have corresponding positive electrode welding clearance holes (1112); the total load current sheet (1134), the first negative electrode connection part (11322) and the second negative electrode connection part (11332) all have corresponding negative electrode welding clearance holes (1113); the total positive lead-out terminal (11311), the first connection bridge (11323), the second connection bridge (11333) and the total negative lead-out terminal (11341) all have corresponding collection clearance holes (1116).

4. The electric motorcycle battery according to claim 3, characterized in that: The total positive current-carrying sheet (1131), the first positive electrode connection part (11321), and the second positive electrode connection part (11331) are provided with a positive electrode thinning welding area at a position corresponding to the positive electrode position of the battery cell; the total current-carrying sheet (1134), the first negative electrode connection part (11322), and the second negative electrode connection part (11332) are provided with a negative electrode thinning welding area at a position corresponding to the negative electrode position of the battery cell.

5. The electric motorcycle battery according to claim 3 or 4, characterized in that: The cell support (11) and the current carrier structure are integrally injection molded.

6. The electric motorcycle battery according to claim 5, characterized in that: The circuit protection board (2) is provided with a collecting electrode on the end surface facing the battery module, the collecting electrode corresponds to the collecting clearance hole (1116) one by one, and the collecting electrode is connected to the total positive lead-out terminal (11311), the first connecting bridge (11323), the second connecting bridge (11333) or the total negative lead-out terminal (11341).

7. The electric motorcycle battery according to claim 6, characterized in that: The connection socket (3) is mounted on the battery box cover (41), the circuit protection board (2) and the battery module are mounted in the battery box body (42), and the battery box cover (41) and the battery box body (42) are welded together at their joints.

8. A battery cell support, characterized in that: The cell support (11) comprises a cell enclosure (110), a cell spot welding clearance plate (111) and a current carrier structure (113); a cell spot welding clearance plate (111) is provided in a battery installation channel formed by the cell enclosure (110), and the cell spot welding clearance plate (111) and the battery installation channel form a cell installation cavity; the current carrier structure (113) is arranged on the inner side of the end of the cell spot welding clearance plate (111) facing the cell installation cavity; a positive electrode welding clearance hole (1112), a negative electrode welding clearance hole (1113) and a negative electrode welding clearance hole (1114) are provided on the cell spot welding clearance plate (111). 13), a total positive current-carrying clearance hole (1114), a total load current clearance hole (1115) and a collection clearance hole (1116); the position corresponding to the current-carrying sheet structure and the positive electrode welding clearance hole (1112) and the negative electrode welding clearance hole (1113) is used as a waiting welding area; the position corresponding to the current-carrying sheet structure and the total positive current-carrying clearance hole (1114) is the total positive lead-out terminal (11311); the position corresponding to the current-carrying sheet structure and the total load current clearance hole (1115) is the total negative lead-out terminal; the position corresponding to the current-carrying sheet structure and the collection clearance hole (1116) is the collection point.

9. The battery cell support according to claim 8, characterized in that: The cell enclosure plate (110), the cell spot welding clearance plate (111) and the current carrier structure (113) are integrally injection molded.

10. The battery cell support according to claim 9, characterized in that: The current-carrying sheet structure (113) comprises a total positive current-carrying sheet (1131), a first connecting current-carrying sheet (1132), a second connecting current-carrying sheet (1133) and a total load current-carrying sheet (1134); the total positive current-carrying sheet (1131) corresponds to the first positive electrode welding clearance hole (1112), and the total positive lead-out terminal (11311) of the total positive current-carrying sheet (1131) corresponds to the total positive current-carrying clearance hole (1114); the total load current-carrying sheet (1134) corresponds to the last negative electrode welding clearance hole (1113), and the total negative lead-out terminal (11341) of the total load current-carrying sheet (1134) corresponds to the total load current clearance hole (1115); The first connecting current-carrying sheet (1132) is provided with a first positive electrode connecting portion (11321), a first negative electrode connecting portion (11322) and a first connecting bridge (11323); the first connecting bridge (11323) connects the first positive electrode connecting portion (1321) and the first negative electrode connecting portion (11322); the first positive electrode connecting portion (11321) corresponds to the positive electrode welding clearance hole (1112), and the first negative electrode connecting portion (11322) corresponds to the negative electrode welding clearance hole (1113) adjacent to the same column; The second connecting current-carrying sheet (1133) is provided with a second positive electrode connecting portion (11331), a second negative electrode connecting portion (11332) and a second connecting bridge (11333); the second connecting bridge (11333) connects the second positive electrode connecting portion (11331) and the second negative electrode connecting portion (11332); the second positive electrode connecting portion (11331) corresponds to the positive electrode welding clearance hole (1112), and the second negative electrode connecting portion (11332) corresponds to the negative electrode welding clearance hole (1113) in an adjacent column; The total positive lead terminal (11311), the first connection bridge (11323), the second connection bridge (11333) and the total negative lead terminal (11341) all have corresponding collection clearance holes (1116).

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