CN111725472A - Battery indirect wiring method and battery box - Google Patents

Abstract

The invention relates to an inter-battery wiring method and a battery box, which belong to the technical field of storage batteries, and solves the problem of how to form a battery pack with a required voltage through a single cell in the prior art, and the traditional carton is unfavorable for transportation when containing the battery pack and will cause problems. Affect battery quality and appearance problems. The inter-battery wiring method includes: arranging a plurality of batteries of the battery pack in a box body in an end-to-end manner; arranging the positive electrode lead and the negative electrode lead at the top corners of the opposite side walls; connecting the positive electrode lead with the most The positive electrode of the first battery in close proximity is connected, and the negative electrode lead is connected to the negative electrode of the second battery closest to it; and the positive electrode and the negative electrode of the plurality of batteries are connected end to end through the tab connected in series. A plurality of batteries are connected into a battery pack with a target voltage according to the target voltage required by the user.

Description

Inter-battery wiring method and battery box

technical field

The present invention relates to the technical field of accumulators, and in particular, to a method for inter-battery wiring and a battery box.

Background technique

The common 6DZF20 type battery is a group of 4 pieces (48V20Ah) or 5 pieces (60V20Ah). Packed in a carton, the battery is padded with foam boards up and down, and is shipped from the factory to the customer in the way of packaging with a carton. During transportation, the carton may be damaged by blisters, or be squeezed and deformed, which will affect the appearance and even quality of the battery.

SUMMARY OF THE INVENTION

In view of the above analysis, the embodiments of the present invention aim to provide an inter-battery wiring method and a battery box, so as to solve how to form a battery pack with a required voltage through a single cell, and the traditional carton is not conducive to transportation when containing the battery pack and It will affect the battery quality and appearance problems.

On the one hand, an embodiment of the present invention provides a method for inter-battery wiring, including: arranging a plurality of batteries in a battery pack in a box body in an end-to-end manner; arranging a positive electrode lead and a negative electrode lead on opposite side walls at the top corner; connecting the positive electrode lead to the positive electrode of the closest first cell, and connecting the negative electrode lead to the negative electrode of the second closest battery; and connecting the plurality of The positive and negative electrodes of the battery are connected in series in an end-to-end fashion.

The beneficial effects of the above technical solutions are as follows: the method for inter-battery wiring provided by the embodiment of the present invention connects the positive electrodes and negative electrodes of the plurality of batteries in series in an end-to-end manner through the lugs, which can meet the target voltage required by the user. Connect multiple batteries into a battery pack with the target voltage.

Based on a further improvement of the above method, the plurality of batteries arranged in an end-to-end manner includes m rows×n columns of batteries, where m is an even number.

Based on a further improvement of the above method, arranging the plurality of batteries in the battery pack in an end-to-end manner further includes: arranging the positive electrode of any battery in the 2nd column to the n-1th column to be adjacent to the battery pack in the same row Negative electrodes of cells and adjacent cells in the same column are adjacent; set the negative electrode of any cell in the 2nd to the n-1th column to be adjacent to the adjacent cells in the same row and the same column The positive electrodes of adjacent cells in are adjacent; and the positive electrodes of any of the cells in columns 1 and n are adjacent to the negative electrodes of adjacent cells in the same row and adjacent cells in adjacent columns or The negative electrode of any cell in the 1st column and the nth column is adjacent to the positive electrode of an adjacent cell in the same row and an adjacent cell in the same column.

Based on a further improvement of the above method, when n is an even number greater than or equal to 4, connecting the positive electrodes and the negative electrodes of the plurality of batteries in series in an end-to-end manner through the tabs further includes: connecting the Each column of cells in columns 1 to n-2 of the first part of cells is connected in series, wherein the first part of cells is the cells in rows 1 to m-1; through vertical and horizontal connections The sheet connects the cells in the n-1th column and the n-th column of the first part of the battery in series row by row; Adjacent columns of cells are connected in series; and adjacent cells in the 1st to nth columns of the second part of the cells are connected in series through horizontal connection pieces, wherein the second part of the cells is the mth row of cells.

Based on a further improvement of the above method, when n is an odd number greater than or equal to 5, connecting the positive electrodes and the negative electrodes of the plurality of batteries in series in an end-to-end manner through the tabs further includes: connecting the Each column of batteries in the first to nth columns of the first part of the battery is connected in series; the adjacent columns of the batteries of the first part of the batteries in the first to nth columns are connected in series through the connecting piece in the horizontal direction; and connecting the adjacent cells in the first to nth columns of the second part of the cells in series through the connection piece in the horizontal direction.

Based on the further improvement of the above method, when viewed from top to bottom, the shape of the box is a rectangle, wherein the positive electrode lead and the negative electrode lead are respectively arranged at the opposite inner side walls of the long sides of the rectangle .

The beneficial effects of the above technical solutions are as follows: the positive electrode wires and the negative electrode wires are respectively arranged at the opposite inner side walls of the long sides of the rectangle, which can shorten the positive and negative electrode wires in the battery box and reduce the cost.

Based on a further improvement of the above method, an interface is provided at the top corner of the side wall of the box, wherein the positive electrode lead is connected to the outside of the box through the interface; the negative electrode lead is along the short side of the rectangle. The edge reaches the interface and is connected to the outside of the box through the interface.

The beneficial effects of the above technical solutions are as follows: by arranging the interface at the top corner of the side wall of the box body, the interface can be set nearby according to the wiring requirements of the whole vehicle, which is convenient and reliable.

Based on a further improvement of the above method, an insulating sleeve is provided on the outside of the connecting piece.

On the other hand, an embodiment of the present invention provides a battery box, comprising a battery pack connected by the inter-battery wiring method described above and a box housing the battery pack, wherein the box is made of poly acrylic.

Based on a further improvement of the above battery box, the side walls and the top cover of the box are provided with a circular-hole mesh structure; the bottom of the box is provided with a foam board for fixing a plurality of batteries; and the top of the box is provided with Two handles.

Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

1. In the present invention, the positive electrodes and negative electrodes of the plurality of batteries are connected in series in an end-to-end manner through the tabs, and the plurality of batteries can be connected into a battery pack with a target voltage according to the target voltage required by the user. In addition, an insulating sleeve is provided outside the lug to prevent short circuit;

2. The positive electrode lead and the negative electrode lead are respectively arranged at the opposite inner side walls of the long side of the rectangle, which can shorten the positive and negative electrode leads in the battery box and reduce the cost;

3. By setting the interface at the top corner of the side wall of the box body, the interface can be set nearby according to the wiring requirements of the whole vehicle, which is convenient and reliable;

4. By setting the side wall and top cover of the box into a circular hole mesh structure, it can save materials, reduce the weight of the battery pack itself, have better heat dissipation, and provide exhaust for valve-regulated lead-acid batteries channel; and

5. There are two handles on the top of the battery pack box, which is convenient for carrying and installation.

In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination solutions. Additional features and advantages of the invention will be set forth in the description which follows, and some of the advantages may become apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by means of particularly pointed out in the description and drawings.

Description of drawings

The drawings are for the purpose of illustrating specific embodiments only and are not to be considered limiting of the invention, and like reference numerals refer to like parts throughout the drawings.

1 is a flowchart of a method for wiring between batteries according to an embodiment of the present invention;

FIG. 2 is a diagram of the internal wiring mode of 24 cells according to an embodiment of the present invention;

FIG. 3 is a diagram of the internal wiring mode of 30 cells according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating the internal wiring of 30 cells according to an embodiment of the present invention; and

Figure 5 is the layout of the side and top circular holes of the box.

Detailed ways

The preferred embodiments of the present invention are specifically described below with reference to the accompanying drawings, wherein the accompanying drawings constitute a part of the present application, and together with the embodiments of the present invention, are used to explain the principles of the present invention, but are not used to limit the scope of the present invention.

A specific embodiment of the present invention discloses a method for inter-battery wiring, as shown in FIG. 1 . Referring to FIG. 1 , the method for inter-battery wiring includes: step S102, arranging a plurality of batteries of the battery pack in a box body in an end-to-end manner; step S104, arranging the positive electrode lead and the negative electrode lead at the top corners of the opposite side walls place; step S106, connecting the positive electrode lead to the positive electrode of the closest first battery, and connecting the negative electrode lead to the negative electrode of the second closest battery; and step S108, connecting the The positive electrode and the negative electrode are connected in series in an end-to-end manner.

Compared with the prior art, the inter-battery wiring method provided by the embodiment of the present invention connects the positive electrodes and negative electrodes of the plurality of batteries in series in an end-to-end manner through the lugs, which can connect the batteries according to the target voltage required by the user. A plurality of batteries are connected as a battery pack with a target voltage.

Hereinafter, the inter-battery wiring method will be described in detail with reference to FIGS. 1 to 4 .

Referring to FIG. 1 and FIG. 2 , the method for inter-battery wiring includes: step S102 , arranging a plurality of batteries of a battery pack in a box body in an end-to-end manner adjacent to each other. Each of the plurality of cells is a 2V single cell. Referring to FIG. 2 , the plurality of batteries arranged in the battery pack in an end-to-end manner includes m rows×n columns of batteries, where m is an even number. Specifically, arranging the plurality of batteries of the battery pack in an end-to-end manner further includes: arranging the positive electrode (also referred to as the positive terminal) of any battery in the 2nd to the n-1th column to be the same as that in the same row Negative electrodes (also called negative terminals) of adjacent cells in the same column and adjacent cells in the same column are adjacent; set the negative electrode of any cell in columns 2 to n-1 to be the same as the negative electrodes in the same row. The positive electrodes of adjacent cells and adjacent cells in the same column are adjacent; and the positive electrodes of any cell in columns 1 and n are adjacent to adjacent cells in the same row and adjacent cells in adjacent columns The negative electrode of is adjacent or the negative electrode of any cell in columns 1 and n is adjacent to the positive electrode of an adjacent cell in the same row and an adjacent cell in the same column. In other words, cells in the same row have the same order of positive and negative electrodes, and cells in adjacent rows have the opposite order of positive and negative electrodes. For example, in the example shown in FIG. 2, the positive and negative electrodes of the batteries in the 1st, 3rd, and 5th rows have the order of left positive and right negative, on the contrary, the 2nd, 4th and 5th rows The positive and negative electrodes of the batteries in the 6 rows are arranged in the order of left negative and right positive.

Referring to FIG. 1 and FIG. 2 , after arranging the plurality of batteries of the battery pack in an end-to-end manner, step S104 is entered, and the positive electrode lead and the negative electrode lead are arranged at the top corners of the opposite side walls. Referring to FIG. 2, when viewed from top to bottom, the shape of the box is a rectangle, wherein the positive electrode lead (referred to as positive lead in FIG. 2) and the negative electrode lead (abbreviated as negative lead in FIG. At the opposite inner side wall of the long side. In FIG. 2 , the positive electrode wire is arranged on the left end of the upper side wall, and the negative electrode wire is arranged on the left side of the lower side wall, so as to shorten the length of the wire as much as possible. In an optional embodiment, the positive electrode wire is arranged at the right end of the upper side wall, and the negative electrode wire is arranged at the left end of the lower side wall.

Referring to FIGS. 1 and 2 , after the positive electrode lead and the negative electrode lead are arranged at the top corners of the opposite side walls, step S106 is entered, the positive electrode lead is connected to the closest positive electrode of the first battery, and the negative The electrode lead is connected to the negative electrode of the nearest second cell. Referring to Figure 2, the positive lead is connected to the first cell at row 1, column 1, and the negative lead is connected to the second cell at row m, column 1. The interface is arranged at the top corner of the side wall of the box (in Figure 2, the interface is arranged at the position where the positive and negative wires are drawn out), and the positive electrode lead is connected to the outside of the box through the interface; the negative electrode lead is along the rectangular shape. The short side reaches the interface and connects to the outside of the box through the interface. In addition, the interface matches the vehicle interface. Such interface and wire arrangement can keep the wire length as short as possible.

Referring to FIG. 1 to FIG. 4 , after connecting the positive electrode lead to the positive electrode of the nearest first battery and connecting the negative electrode lead to the negative electrode of the nearest second battery, proceed to step S108 , connect the The positive and negative electrodes of the plurality of cells are connected in series in an end-to-end manner. FIG. 2 to FIG. 4 respectively show the connection manners of the single cells when the number of the single cells is 24, 30 and 36 respectively. For example, when the single battery is a 2V battery, in FIG. 2 to FIG. 4 , different numbers of batteries are respectively connected as battery packs capable of supplying voltages of 48V, 60V, and 72V. Optionally, with the inter-battery wiring method of the embodiment of the invention, other numbers of 2V batteries can be connected to provide a specific voltage according to the specific voltage required by the user, as long as the specific voltage is a multiple of 2V. Hereinafter, a specific inter-battery wiring method will be described in detail with reference to FIGS. 2 to 4 .

Referring to FIG. 2 and FIG. 4 , when n is an even number greater than or equal to 4, connecting the positive electrodes and the negative electrodes of the plurality of batteries in series in an end-to-end manner through the tabs further includes: connecting the first part through the connecting tabs in the vertical direction; Each column of batteries in the 1st to n-2th columns of the battery is connected in series, wherein the first part of the battery is the battery in the 1st row to the m-1th row; The cells in the n-1th column of the cells and the cells in the n-th column are connected in series row by row; the adjacent columns of cells in the first part of the cells in the 1st column to the n-1th column are connected in series by the connecting piece in the horizontal direction; and by The connecting piece in the horizontal direction connects the adjacent cells in the 1st to the nth column of the second part of the cells in series, wherein the second part of the cells is the m-th row of cells.

Compared with the prior art, in the embodiment of the present invention, when n is an even number greater than or equal to 4, by sequentially connecting each column of batteries in the first part of batteries in the first column to the n-2 column in series, the (n- 1) to n columns are connected in series, and then the second part of the cells are connected in series, so that a series path from the first cell to the second cell can be formed without repetition, so that the battery pack connected in this way can provide (m × n×2)V voltage, and can simplify the connection between batteries.

Referring to FIG. 3 , when n is an odd number greater than or equal to 5, connecting the positive electrodes and negative electrodes of the plurality of batteries in series in an end-to-end manner through the tabs further includes: connecting the first part of the batteries with the connecting tabs in the vertical direction. Each column of cells in the 1st column to the nth column is connected in series; the adjacent columns of cells in the 1st to nth column of the first part of the battery are connected in series through the horizontal connection piece; Adjacent cells in columns 1 to n of the two-part battery are connected in series. The outside of the connecting piece is provided with an insulating sleeve to prevent short circuit.

Compared with the prior art, in the embodiment of the present invention, when n is an odd number greater than or equal to 5, the cells in the first part of the cells are sequentially connected in series in each row of the cells in the first row to the nth row, and then the cells in the second part of the cells are connected in series. Connected in series, a series path from the first battery to the second battery can be formed without repetition, so that the battery pack connected in this way can provide (m×n×2)V voltage and can simplify the inter-battery connection.

Hereinafter, the inter-cell wiring method will be described by way of specific examples.

The present invention adopts the following technical solutions: a lead-acid battery box and a 2V monomer wiring method:

1. Twenty-four 2V monomers are connected in series with the positive and negative ends in series, and the leads of the positive terminal and the negative terminal are not too far apart. As shown in Figure 2, the gray line segments between the single cells represent the lugs, and the lugs are covered with insulating sleeves to prevent short circuits;

2. As shown in Figure 2, the positive wire and the negative wire are connected to the positive and negative terminals respectively, and the other ends are respectively converged at an interface (the top corner of the side wall of the box) that can match the interface of the vehicle. The interface is also It can be designed nearby according to the wiring requirements of the whole vehicle, which is convenient and reliable;

Another specific embodiment of the present invention discloses a battery box, which includes a battery pack connected by the inter-battery wiring method described above and a box housing the battery pack, wherein the material of the box is polypropylene. In order to avoid redundant description, the method for connecting between batteries is not described in detail in this embodiment. Referring to Figure 5, the side wall and top cover of the box can be set to a circular hole mesh structure to save materials, reduce the weight of the battery pack itself, have better heat dissipation, and provide valve-regulated lead-acid batteries. exhaust channel. The bottom of the box is provided with a foam board for fixing a plurality of batteries. In addition, there are two handles on the top of the box to facilitate carrying and installation.

Hereinafter, with reference to FIGS. 2 and 5 , the battery case will be described by way of a specific example.

1. As shown in Figure 2, the black outer frame represents the battery pack box, which is made of PP material, heat-resistant and wear-resistant, and 24 single cells are tightly fastened inside it as shown in the figure;

2. As shown in Figure 5, the whole body of the battery pack is provided with round holes, that is, a mesh structure of round holes. One can save raw materials, the second can reduce the importance of the battery pack itself, and the third can have better heat dissipation. 4. Since the battery is a valve-regulated lead-acid battery, an exhaust passage can be provided; and

3. There are two handles on the top of the battery pack box, which is convenient for carrying and installation.

Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

1. In the present invention, the positive electrodes and negative electrodes of the plurality of batteries are connected in series in an end-to-end manner through the tabs, and the plurality of batteries can be connected into a battery pack with a target voltage according to the target voltage required by the user. In addition, an insulating sleeve is provided outside the lug to prevent short circuit;

2. The positive electrode lead and the negative electrode lead are respectively arranged at the opposite inner side walls of the long side of the rectangle, which can shorten the positive and negative electrode leads in the battery box and reduce the cost;

3. By setting the interface at the top corner of the side wall of the box body, the interface can be set nearby according to the wiring requirements of the whole vehicle, which is convenient and reliable;

4. By setting the side wall and top cover of the box into a circular hole mesh structure, it can save materials, reduce the weight of the battery pack itself, have better heat dissipation, and provide exhaust for valve-regulated lead-acid batteries channel; and

5. There are two handles on the top of the battery pack box, which is convenient for carrying and installation.

Those skilled in the art can understand that all or part of the process of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. Wherein, the computer-readable storage medium is a magnetic disk, an optical disk, a read-only storage memory, or a random-access storage memory, or the like.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this. Substitutions should be covered within the protection scope of the present invention.

Claims (10)

1. a method for inter-battery wiring, characterized in that, comprising: A plurality of batteries of the battery pack are arranged in the box in an end-to-end manner; Disposing the positive electrode lead and the negative electrode lead at the top corners of the opposite side walls; connecting the positive electrode lead to the positive electrode of the nearest first cell and connecting the negative electrode lead to the negative electrode of the nearest second cell; and The positive electrodes and the negative electrodes of the plurality of batteries are connected in series in an end-to-end manner through tabs. 2 . The inter-battery wiring method according to claim 1 , wherein the plurality of batteries in the battery pack arranged end to end adjacent to each other comprises m rows×n columns of batteries, and m is an even number. 3 . 3. The inter-battery wiring method according to claim 2, wherein arranging the plurality of batteries of the battery pack in an end-to-end adjacent manner further comprises: disposing the positive electrode of any cell in columns 2 to n-1 adjacent to the negative electrode of an adjacent cell in the same row and an adjacent cell in the same column; disposing the negative electrode of any cell in the 2nd to the n-1th column adjacent to the positive electrode of an adjacent cell in the same row and an adjacent cell in the same column; and The positive electrode of either cell in the 1st and nth columns is adjacent to the negative electrode of the adjacent cell in the same row and the adjacent cell in the adjacent column or in the 1st and the nth column The negative electrode of any cell is adjacent to the positive electrode of an adjacent cell in the same row and an adjacent cell in the same column. 4. The inter-battery wiring method according to claim 3, wherein, When n is an even number greater than or equal to 4, connecting the positive electrodes and the negative electrodes of the plurality of batteries in series in an end-to-end manner through the tabs further includes: Connect each column of batteries in the first part of the batteries in the 1st column to the n-2th column in series through the connecting piece in the vertical direction, wherein the first part of the batteries are the batteries in the 1st row to the m-1th row; Connecting the cells in the n-1th column and the nth column of the first part of the cells in series row by row through connecting sheets in the vertical direction and the horizontal direction; Connecting adjacent columns of batteries in the first part of the batteries in the 1st to n-1th columns in series by connecting pieces in the horizontal direction; and Adjacent cells in the 1st to nth columns of the second part of the cells are connected in series by connecting sheets in the horizontal direction, wherein the second part of the cells is the mth row of cells. 5. The inter-battery wiring method according to claim 4, wherein, When n is an odd number greater than or equal to 5, connecting the positive electrodes and the negative electrodes of the plurality of batteries in series in an end-to-end manner through the tabs further includes: connecting each column of batteries in columns 1 to n of the first part of batteries in series through connecting sheets in a vertical direction; connecting adjacent columns of batteries in the first to nth columns of the first part of batteries in series by connecting sheets in a horizontal direction; and Adjacent cells in the first to nth columns of the second part of the cells are connected in series by connecting sheets in the horizontal direction. 6. The inter-battery wiring method according to any one of claims 3-5, wherein when viewed from top to bottom, the shape of the box is a rectangle, wherein the positive electrode lead and all the The negative electrode wires are respectively disposed at opposite inner side walls of the long sides of the rectangle. 7. The inter-battery wiring method according to claim 1, wherein the interface is arranged at the top corner of the side wall of the box, wherein, The positive electrode lead is connected to the outside of the box through the interface; The negative electrode wire reaches the interface along the short side of the rectangle, and is connected to the outside of the box through the interface. 8 . The inter-battery wiring method according to claim 1 , wherein an insulating sleeve is provided on the outside of the connecting piece. 9 . 9 . A battery box, characterized in that it comprises a battery pack connected by the inter-battery wiring method according to claims 1 to 8 and a box housing the battery pack, wherein the box is made of poly acrylic. 10. The battery case according to claim 9, characterized in that, The side walls and the top cover of the box body are arranged in a circular hole mesh structure; The bottom of the box is provided with a foam board for fixing a plurality of batteries; and The top of the box body is provided with two handles.

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