A battery cell arrangement structure for a charging product

Abstract

The present invention provides a battery cell arrangement structure for a rechargeable product, firstly, a shell, a plurality of battery bodies, a plurality of series-connected nickel sheets, a positive nickel sheet and a negative nickel sheet are provided, the shell comprises a first cover plate and a second cover plate, seven positioning grooves are respectively provided on the first cover plate and the second cover plate, one of the positioning grooves is located in the middle of the cover plate and the other six positioning grooves are evenly distributed on the circumference formed with the center of the cover plate as the center, a plurality of battery bodies are positioned between the two cover plates, and a plurality of battery bodies are connected in series through series-connected nickel sheets to form a battery pack, the positive nickel sheet is connected to the positive electrode of the battery pack, and the negative nickel sheet is connected to the negative electrode of the battery pack. Compared with the prior art, the present invention makes the distances between adjacent battery bodies the same, can use the same series-connected nickel sheet, and can adjust the voltage of the battery pack by changing the number of installed battery bodies, and is convenient for disassembly and assembly.

Description

Technical Field

[0001] The present invention relates to a battery pack of a charging product, and in particular to a battery cell arrangement structure of a charging product. Background Art

[0002] At present, the battery cells of battery packs used for rechargeable products on the market are arranged irregularly, and the battery cells are connected in series through wires. The large number of wires makes the series structure messy. Users are often non-professionals. When the battery cells have problems and need to be replaced, it is difficult to operate. Therefore, it is necessary to rearrange the battery cells so that they can be connected in series through nickel sheets of the same specifications to reduce the difficulty of disassembly and assembly of the battery cells. At the same time, the battery packs on the market cannot adjust the voltage of the battery pack by increasing or decreasing the number of battery cells. Summary of the invention

[0003] In view of this, the present invention provides a battery cell arrangement structure for a rechargeable product. Compared with the prior art, the distances between adjacent battery bodies are the same, the same series nickel sheets can be used, and the voltage of the battery pack can be adjusted by changing the number of installed battery bodies, and disassembly and assembly are convenient.

[0004] To this end, the present invention provides a battery cell arrangement structure of a charging product. First, a shell, multiple battery bodies, multiple nickel sheets connected in series, a positive nickel sheet and a negative nickel sheet are set. The shell includes a first cover plate and a second cover plate. Seven first positioning grooves are opened on the first cover plate, one of which is located in the middle position of the first cover plate and the other six first positioning grooves are evenly distributed on a circumference formed with the center of the cover plate as the center of the circle. Seven second positioning grooves are opened on the second cover plate, one of which is located in the middle position of the second cover plate and the other six second positioning grooves are evenly distributed on a circumference formed with the center of the cover plate as the center of the circle. The positions of the seven first positioning grooves correspond one by one to the positions of the seven second positioning grooves. The battery body is positioned between the first positioning groove and the second positioning groove, and the multiple battery bodies are connected in series through the series nickel sheets to form a battery pack. The positive nickel sheet is connected to the positive electrode of the battery pack, and the negative nickel sheet is connected to the negative electrode of the battery pack.

[0005] Furthermore, the distance between any two adjacent battery bodies 3 is the same.

[0006] Furthermore, the battery pack includes seven battery bodies 3 , three series-connected nickel sheets 4 and a positive nickel sheet 5 are arranged on the first cover plate 1 , and three series-connected nickel sheets 4 and a negative nickel sheet 6 are arranged on the second cover plate 2 .

[0007] Furthermore, the battery pack includes six battery bodies 3, and the six battery bodies 3 are evenly distributed on a circumference formed with the center of the cover plate as the center.

[0008] Furthermore, two nickel sheets 4 connected in series, a positive nickel sheet 5 and a negative nickel sheet 6 are arranged on the first cover plate 1 , and three nickel sheets 4 connected in series are arranged on the second cover plate 2 .

[0009] Furthermore, the battery pack includes five battery bodies 3, and the five battery bodies 3 are distributed on a circumference formed with the center of the cover plate as the center.

[0010] Furthermore, two nickel sheets 4 connected in series and a positive nickel sheet 5 are provided on the first cover plate 1 , and two nickel sheets 4 connected in series and a negative nickel sheet 6 are provided on the second cover plate 2 .

[0011] Furthermore, the battery pack includes four battery bodies 3, and the four battery bodies 3 are distributed on a circumference formed with the center of the cover plate as the center.

[0012] Furthermore, a nickel sheet 4 connected in series, a positive nickel sheet 5 and a negative nickel sheet 6 are arranged on the first cover plate 1 , and two nickel sheets 4 connected in series are arranged on the second cover plate 2 .

[0013] Furthermore, the first cover plate 1 and the second cover plate 2 are clamped together via a connecting plate 7 .

[0014] The battery cell arrangement structure of a charging product provided by the present invention is mainly composed of a shell and seven battery bodies, and the distances between adjacent battery bodies are the same, so the same series nickel sheet can be used for series connection. Compared with wires, it not only reduces the difficulty of installation, but also simplifies the structure to facilitate disassembly and maintenance. The number of battery bodies can also be increased or decreased to adjust the voltage of the battery pack. The following content is explained in more detail: The present invention adopts a battery body in the middle, and the remaining six battery bodies are evenly distributed on the circumference drawn with the center of the cover plate as the center of the circle, so that each battery body is exactly the same distance from the adjacent battery body. Since the distance is equal, the series nickel sheet used between the positive and negative electrodes of any two series battery bodies can be common. It is precisely because any battery body is at an equal distance from the adjacent battery body that it is ensured that only a small heat dissipation spacing is left between the adjacent battery bodies (this design adopts a heat dissipation spacing of 1.5mm between adjacent battery bodies), which ensures that the overall volume of the battery assembly is minimized. Because the battery bodies are arranged like bundles, the positive and negative poles of each battery body are only exposed at the two ends. In this way, when welding the nickel sheet, you only need to weld the two ends, which is easy to operate.

[0015] The following is a description of the arrangement of different voltage models: one polarity can remain unchanged (this design chooses the positive pole), while the end battery in series has the opposite polarity (this design chooses the negative pole). By reducing the number of batteries at the end of the series connection, the purpose of achieving different voltages is achieved. This ensures the universality of the assembly parts of the first few series cells and the fixity of the welding positions of the first few batteries (the front and rear brackets, positive nickel sheets, negative nickel sheets, and series nickel sheets of the four battery models are completely universal). Originally, a very small heat dissipation spacing was designed between the batteries. When the model changes from 7 25.2V to 6 21.6V, the first battery to be removed is the middle battery. In this way, when the cooling air passes through the battery assembly, the wind can take away the heat energy generated by the battery from the middle and surrounding areas and the gaps between the batteries. Therefore, the model with ≤6 batteries has better heat dissipation than 7.

[0016] The core points of cell arrangement: 1. Each cell is equidistant from the center of the adjacent cell; 2. The starting cell position is specified, and the purpose of different voltage models is achieved by adding or reducing the end cells, ensuring the consistency of the front-end cell assembly position and common parts. 3. When the cells of different voltage models are reduced from a maximum of 7, the middle cell is reduced first, and then the edge cells are cut off. This is the best heat dissipation for models with ≤6 cells.

[0017] Therefore, the present invention has the following advantages compared with the prior art:

[0018] 1. The arrangement is simple and the battery components are small in size;

[0019] 2. Battery components of different voltage models have strong versatility;

[0020] 3. The battery components have good heat dissipation;

[0021] 4. The welding process between the cells is simple and the processing cost is low;

[0022] 5. The voltage is adjustable and the entire battery assembly is easy to replace. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0024] Figure 1 A schematic diagram of a battery cell arrangement structure of a rechargeable product provided by an embodiment of the present invention;

[0025] Figure 2A schematic diagram of a battery cell arrangement structure of a rechargeable product provided by an embodiment of the present invention in which 7 batteries are installed;

[0026] Figure 3 A schematic diagram of a battery cell arrangement structure of a rechargeable product provided by an embodiment of the present invention in which 7 batteries are installed;

[0027] Figure 4 A schematic diagram of a battery cell arrangement structure of a rechargeable product provided by an embodiment of the present invention in which six batteries are installed;

[0028] Figure 5 A schematic diagram of a battery cell arrangement structure of a rechargeable product provided by an embodiment of the present invention in which six batteries are installed;

[0029] Figure 6 A schematic diagram of a battery cell arrangement structure of a rechargeable product provided by an embodiment of the present invention in which five batteries are installed;

[0030] Figure 7 A schematic diagram of a battery cell arrangement structure of a rechargeable product provided by an embodiment of the present invention in which five batteries are installed;

[0031] Figure 8 A schematic diagram of a battery cell arrangement structure of a rechargeable product provided by an embodiment of the present invention in which four batteries are installed;

[0032] Fig. 9 A schematic structural diagram of a battery cell arrangement structure of a rechargeable product provided by an embodiment of the present invention in which four batteries are installed. DETAILED DESCRIPTION

[0033] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0034] Embodiment 1:

[0035] See also Figure 1The present embodiment provides a battery cell arrangement structure of a rechargeable product. First, a shell, a plurality of battery bodies 3, a plurality of series-connected nickel sheets 4, a positive nickel sheet 5, and a negative nickel sheet 6 are provided. The shell includes a first cover plate 1 and a second cover plate 2. Seven first positioning grooves 11 are provided on the first cover plate 1, one of which is located in the middle of the first cover plate 1 and the other six first positioning grooves 11 are evenly distributed on a circumference formed with the center of the cover plate as the center. Seven second positioning grooves 21 are provided on the second cover plate 2, one of which is located in the middle of the second cover plate 2. The other six second positioning grooves 21 are evenly distributed on the circumference formed by the center of the cover plate, the positions of the seven first positioning grooves 11 correspond one by one to the positions of the seven second positioning grooves 21, the battery body 3 is positioned between the first positioning groove 11 and the second positioning groove 21, and the multiple battery bodies 3 are connected in series through the series nickel sheets 4 to form a battery pack, the positive nickel sheet 5 is connected to the positive electrode of the battery pack, and the negative nickel sheet 6 is connected to the negative electrode of the battery pack. The distance between any two adjacent battery bodies 3 is the same, and the first cover plate 1 and the second cover plate 2 are clamped together by the connecting plate 7.

[0036] See also Figures 2 to 3 The battery pack includes seven battery bodies 3, three series-connected nickel sheets 4 and a positive nickel sheet 5 are arranged on the first cover plate 1, and three series-connected nickel sheets 4 and a negative nickel sheet 6 are arranged on the second cover plate 2.

[0037] See also Figures 4 to 5 The battery pack includes six battery bodies 3, which are evenly distributed on a circle formed with the center of the cover plate as the center. Two series-connected nickel sheets 4, a positive nickel sheet 5 and a negative nickel sheet 6 are arranged on the first cover plate 1, and three series-connected nickel sheets 4 are arranged on the second cover plate 2.

[0038] See also Figure 6 to Figure 7 The battery pack includes five battery bodies 3, which are distributed on a circle formed with the center of the cover plate as the center. Two series-connected nickel sheets 4 and a positive nickel sheet 5 are arranged on the first cover plate 1, and two series-connected nickel sheets 4 and a negative nickel sheet 6 are arranged on the second cover plate 2.

[0039] See also Figures 8 to 9 The battery pack includes four battery bodies 3, which are distributed on a circle formed with the center of the cover plate as the center. A series-connected nickel sheet 4, a positive nickel sheet 5 and a negative nickel sheet 6 are arranged on the first cover plate 1, and two series-connected nickel sheets 4 are arranged on the second cover plate 2.

[0040] The battery cell arrangement structure of a charging product provided by the present invention is mainly composed of a shell and seven battery bodies, and the distances between adjacent battery bodies are the same, so the same series nickel sheet can be used for series connection. Compared with wires, it not only reduces the difficulty of installation, but also simplifies the structure to facilitate disassembly and maintenance. The number of battery bodies can also be increased or decreased to adjust the voltage of the battery pack. The following content is explained in more detail: The present invention adopts a battery body in the middle, and the remaining six battery bodies are evenly distributed on the circumference drawn with the center of the cover plate as the center of the circle, so that each battery body is exactly the same distance from the adjacent battery body. Since the distance is equal, the series nickel sheet used between the positive and negative electrodes of any two series battery bodies can be common. It is precisely because any battery body is at an equal distance from the adjacent battery body that it is ensured that only a small heat dissipation spacing is left between the adjacent battery bodies (this design adopts a heat dissipation spacing of 1.5mm between adjacent battery bodies), which ensures that the overall volume of the battery assembly is minimized. Because the battery bodies are arranged like bundles, the positive and negative poles of each battery body are only exposed at the two ends. In this way, when welding the nickel sheet, you only need to weld the two ends, which is easy to operate.

[0041] The following is a description of the arrangement of different voltage models: one polarity can remain unchanged (this design chooses the positive pole), while the end battery in series has the opposite polarity (this design chooses the negative pole). By reducing the number of batteries at the end of the series connection, the purpose of achieving different voltages is achieved. This ensures the universality of the assembly parts of the first few series cells and the fixity of the welding positions of the first few batteries (the front and rear brackets, positive nickel sheets, negative nickel sheets, and series nickel sheets of the four battery models are completely universal). Originally, a very small heat dissipation spacing was designed between the batteries. When the model changes from 7 25.2V to 6 21.6V, the first battery to be removed is the middle battery. In this way, when the cooling air passes through the battery assembly, the wind can take away the heat energy generated by the battery from the middle and surrounding areas and the gaps between the batteries. Therefore, the model with ≤6 batteries has better heat dissipation than 7.

[0042] When designing, we chose 18650 batteries, with a voltage of 3.6V per battery. This battery assembly has a maximum of 7 batteries and a minimum of 4 batteries, so the whole machine has the following four models: 7 batteries = 25.2V; 6 batteries = 21.6V; 5 batteries = 18V; 4 batteries = 14.4V. Figures 2 to 9 It can be seen that every time a battery is missing, a new voltage model will appear. The positions of the first few points remain unchanged. In this way, the front and rear brackets, positive nickel sheet, negative nickel sheet, and series nickel sheet of the battery can be universal. The closer to the positive end, the more consistent the assembly position can be.

[0043] The core points of cell arrangement: 1. Each cell is equidistant from the center of the adjacent cell; 2. The starting cell position is specified, and the purpose of different voltage models is achieved by adding or reducing the end cells, ensuring the consistency of the front-end cell assembly position and common parts. 3. When the cells of different voltage models are reduced from a maximum of 7, the middle cell is reduced first, and then the edge cells are cut off. This is the best heat dissipation for models with ≤6 cells.

[0044] Therefore, the present invention has the following advantages compared with the prior art:

[0045] 1. The arrangement is simple and the battery components are small in size;

[0046] 2. Battery components of different voltage models have strong versatility;

[0047] 3. The battery components have good heat dissipation;

[0048] 4. The welding process between the cells is simple and the processing cost is low;

[0049] 5. The voltage is adjustable and the entire battery assembly is easy to replace.

[0050] Embodiment 2:

[0051] See also Figures 1 to 9 , the figure shows a battery cell arrangement structure of a charging product provided by Example 2 of the present invention. This embodiment further makes the following improved technical solutions on the basis of the above embodiments: the positive and negative terminals and voltage monitoring terminals of the battery in the present invention are connected to the battery body 3 in a detachable manner (such as snap-on), and the positive and negative terminals and voltage monitoring terminals of the battery are all conventional parts. The following is a further explanation: the battery assembly has been placed in the assembly warehouse for a long time / sea transportation for a long time / and has been placed in the sales warehouse for a long time before being sold, resulting in the battery power being completely lost, and finally being unable to be charged when sold to the end customer. When encountering such a situation, the present invention can replace the battery assembly by disassembling a cover plate, unplugging the positive and negative terminals and voltage monitoring terminals of the battery.

[0052] Embodiment three:

[0053] See also Figures 1 to 9 The figure shows a battery cell arrangement structure of a charging product provided by Example 3 of the present invention. This embodiment further makes the following improved technical solutions on the basis of the above embodiments: In the above embodiments, only 7 batteries can be placed at most. However, in fact, many charging products require more power, and 7 batteries cannot meet the demand. Therefore, on the basis of Example 1, more circles of batteries can be added to the outer circle of the 7 batteries to increase the power capacity.

[0054] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A battery cell arrangement structure for a rechargeable product, characterized in that: The invention comprises a shell, a plurality of battery bodies (3), a plurality of series-connected nickel sheets (4), a positive nickel sheet (5) and a negative nickel sheet (6), wherein the shell comprises a first cover plate (1) and a second cover plate (2), wherein the first cover plate (1) is provided with seven first positioning grooves (11), wherein one of the first positioning grooves (11) is located in the middle of the first cover plate (1) and the other six first positioning grooves (11) are evenly distributed on a circumference formed with the center of the cover plate as the center, wherein the second cover plate (2) is provided with seven second positioning grooves (21), wherein one of the second positioning grooves (21) is located in the middle of the second cover plate (2) and the other six second positioning grooves (21) are evenly distributed on a circumference formed with the center of the cover plate as the center, wherein the positions of the seven first positioning grooves (11) correspond one-to-one to the positions of the seven second positioning grooves (21), wherein the battery body (3) is positioned between the first positioning groove (11) and the second positioning groove (21), and the plurality of battery bodies (3) are connected in series via the series-connected nickel sheets (4). The positive nickel sheet (5) is connected to the positive electrode of the battery pack, and the negative nickel sheet (6) is connected to the negative electrode of the battery pack; the battery pack comprises seven battery bodies (3); the first cover plate (1) is provided with three of the series-connected nickel sheets (4) and the positive nickel sheet (5); the second cover plate (2) is provided with three of the series-connected nickel sheets (4) and the negative nickel sheet (6); the first cover plate (1) is provided with two of the series-connected nickel sheets (4) and the positive nickel sheet (5); and the negative nickel sheet (6), and the second cover plate (2) is provided with three of the nickel sheets (4) connected in series; the first cover plate (1) is provided with two of the nickel sheets (4) connected in series and the positive nickel sheet (5), and the second cover plate (2) is provided with two of the nickel sheets (4) connected in series and the negative nickel sheet (6); the first cover plate (1) is provided with one of the nickel sheets (4), the positive nickel sheet (5) and the negative nickel sheet (6), and the second cover plate (2) is provided with two of the nickel sheets (4) connected in series.

2. The battery cell arrangement structure of a rechargeable product according to claim 1, characterized in that: The distance between any two adjacent battery bodies (3) is the same.

3. The battery cell arrangement structure of a rechargeable product according to claim 1 or 2, characterized in that: The battery pack comprises six battery bodies (3), and the six battery bodies (3) are evenly distributed on a circumference formed with the center of the cover plate as the center.

4. The battery cell arrangement structure of a rechargeable product according to claim 1 or 2, characterized in that: The battery pack comprises five battery bodies (3), and the five battery bodies (3) are distributed on a circumference formed with the center of the cover plate as the center.

5. The battery cell arrangement structure of a rechargeable product according to claim 1 or 2, characterized in that: The battery pack comprises four battery bodies (3), and the four battery bodies (3) are distributed on a circumference formed with the center of the cover plate as the center of the circle.

6. The battery cell arrangement structure of a rechargeable product according to claim 1 or 2, characterized in that: The first cover plate (1) and the second cover plate (2) are clamped together via a connecting plate (7).

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