A dual-voltage universal battery pack structure

Abstract

This utility model discloses a dual-voltage universal battery pack structure, including a lower cover, an upper cover, and a plug. The lower cover houses the battery, and a mounting plate is located on top of the battery. A conductive copper component is located on the upper surface of the mounting plate. A conductive slot is formed on the upper surface of the upper cover, and a first connecting plate is located at the front end of the upper cover. A foolproof seat is located on the upper surface of the first connecting plate, and a foolproof block is located on the upper surface of the foolproof seat. The plug is located at the interface of a power tool, and a second connecting plate is located at the front end of the plug. A lower conductive plate is located on the lower surface of the plug. This utility model optimizes the series arrangement of single-row and double-row batteries, ensuring that the length and width dimensions of the battery cell assembly in the horizontal cross-section remain the same for both single-row and double-row batteries. Only the lower cover of different heights needs to be manufactured, while the upper cover has a universal size. Therefore, this battery pack does not require new molds for production, reducing production costs.

Description

Technical Field

[0001] This utility model relates to the field of DC power supply technology, and in particular to a dual-voltage universal battery pack structure. Background Technology

[0002] DC power tools use DC power as their energy source, and their core advantage is portability and the absence of power cords, making them suitable for various scenarios such as home DIY, professional construction, auto repair, and gardening. Based on their function and purpose, they can be divided into the following main categories, each containing typical tools and application scenarios.

[0003] Current DC power tools typically use a battery pack with one voltage (Voltage A, 10.8V) as their power source to drive the tool. However, when the tool itself is modified to use a different voltage (Voltage B, 21.6V) through changes to the internal motor specifications, switch specifications, and internal control circuitry, the existing Voltage A battery pack will no longer be suitable for the Voltage B tool. A new Voltage B battery pack will be required, which will significantly alter the structural dimensions and internal structure of the new battery pack. Furthermore, the battery pack casing will need to be manufactured using new molds, thus increasing the manufacturer's R&D costs and raising the product's overall cost.

[0004] There is an urgent need for a dual-voltage universal battery pack structure that is compatible with both new (21.6V) and old (10.8V) voltages to reduce manufacturers' R&D and mold costs. It should also have a foolproof structure to ensure that a battery pack of one voltage can only be inserted into a tool of the same voltage to ensure safety and performance. Utility Model Content

[0005] To meet the above requirements, this utility model provides a dual-voltage universal battery pack structure to solve the problems mentioned in the background art.

[0006] To solve the above technical problems, this utility model achieves the following technical solution: a dual-voltage universal battery pack structure, including a lower cover, an upper cover, and a plug. A battery is disposed inside the lower cover, and a mounting plate is disposed on the top of the battery. A conductive copper component connected to the battery circuit is disposed on the upper surface of the mounting plate. A conductive slot adapted to the conductive copper component is formed on the upper surface of the upper cover. A first connecting plate is disposed at the front end of the upper cover. A foolproof seat is disposed on the upper surface of the first connecting plate, and a foolproof block is disposed on the upper surface of the foolproof seat. The plug is disposed at the interface of a power tool. A second connecting plate is disposed at the front end of the plug. A lower conductive piece extending into the conductive slot is disposed on the lower surface of the plug. A foolproof cylinder is disposed on the upper surface of the second connecting plate, and a foolproof groove adapted to the foolproof block is formed on the lower surface of the foolproof cylinder.

[0007] Furthermore, the lower conductive sheet is connected to the conductive copper component through the conductive slot, and the upper surface of the second connecting plate is provided with an upper conductive sheet connected to the power tool circuit, and the upper conductive sheet is electrically connected to the second connecting plate.

[0008] Furthermore, the battery can be a dual-row or single-row design; when the battery is a dual-row design, it is a dual-row battery composed of six cells, the foolproof block is located on the left side of the foolproof base, and the position of the foolproof cylinder is on the same vertical line as the position of the foolproof block; when the battery is a single-row design, it is a single-row battery composed of three cells, the foolproof block is located on the right side of the foolproof base, and the position of the foolproof cylinder is on the same vertical line as the position of the foolproof block.

[0009] Furthermore, the voltage of the dual-row battery is 21.6V, the lower cover is designed to be taller, and the height of the lower cover is greater than the height of the dual-row battery.

[0010] Furthermore, the three cells of the single-row battery are connected in series, the voltage of the single-row battery is 10.8V, the lower cover is in the initial design, and the height of the lower cover is greater than the height of the single-row battery.

[0011] Furthermore, a first connecting portion is provided between the upper cover and the first connecting plate. The bottom end of the first connecting portion is connected to the first connecting plate, and the top end of the first connecting portion is connected to the upper cover. The height of the first connecting portion is greater than the height of the conductive copper component.

[0012] Furthermore, a second connecting part is provided between the plug and the second connecting plate. The bottom end of the second connecting part is fixedly connected to the second connecting plate, and the top end of the second connecting part is fixedly connected to the plug. The lower surface of the plug is adapted to the upper surface of the upper cover.

[0013] Furthermore, a buckle is provided on the side of the top cover away from the conductive slot, and a slot is provided on the upper surface of the top cover outside the buckle.

[0014] The beneficial technical effects of this utility model are: (1) The dual-voltage universal battery pack structure optimizes the series arrangement of single-row and double-row batteries so that the length and width of the cell components of single-row and double-row batteries are the same in the horizontal cross section. Only in the height direction, the lower cover is made with different heights according to the structural requirements, while the upper cover is of universal size. Therefore, this type of battery pack does not need to use new molds for production, thus reducing production costs.

[0015] (2) The dual-voltage universal battery pack structure, by modifying the position of the anti-foolproof block according to the different voltages, makes the battery pack have an anti-foolproof structure, ensuring that the two different voltage battery packs are only compatible with DC power tools of different voltages. This ensures that a battery pack of one voltage can only be inserted into a tool of the same voltage, avoiding misinsertion, which would cause damage to the internal circuits and components of the tool due to increased voltage, or cause the tool to fail to reach its rated working state due to decreased voltage, thus affecting the efficiency of use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a utility model Figure 1 Enlarged structural diagram at point A; Figure 3 This is a three-dimensional structural schematic diagram of the dual-row battery of this utility model; Figure 4 This is a top-view perspective view of the plug structure of this utility model adapted to dual-row batteries; Figure 5 This is a bottom-view perspective view of the plug structure of this utility model adapted to dual-row batteries; Figure 6 This is a three-dimensional structural schematic diagram of the single-row battery of this utility model; Figure 7 This is a three-dimensional structural schematic diagram of the single-row battery and conductive copper component of this utility model; Figure 8 This is a top-view perspective view of the plug structure of this utility model adapted to a single-row battery.

[0017] The numbers and letters in the diagram represent the names of the corresponding components: 1. Bottom cover; 11. Dual-row battery; 12. Mounting plate; 13. Conductive copper component; 2. Top cover; 21. Conductive slot; 22. Slot; 23. Buckle; 3. First connecting plate; 31. Foolproof seat; 4. Foolproof block; 5. Single-row battery; 6. Plug; 61. Second connecting plate; 62. Upper conductive sheet; 63. Foolproof cylinder; 64. Lower conductive sheet; 65. Foolproof groove. Detailed Implementation

[0018] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0019] See appendix Figures 1-8As shown, a dual-voltage universal battery pack structure in Embodiment 1 includes a lower cover 1, an upper cover 2, and a plug 6. The lower cover 1 houses a battery, and a mounting plate 12 is located on top of the battery. A conductive copper component 13 connected to the battery circuit is located on the upper surface of the mounting plate 12. A conductive slot 21, compatible with the conductive copper component 13, is located on the upper surface of the upper cover 2. A first connecting plate 3 is located at the front end of the upper cover 2. A foolproof seat 31 is located on the upper surface of the first connecting plate 3, and a foolproof block 4 is located on the upper surface of the foolproof seat 31. The plug 6 is located at the electric... At the interface of the tool, a second connecting plate 61 is provided at the front end of the plug 6, a lower conductive piece 64 extending into the conductive slot 21 is provided on the lower surface of the plug 6, a foolproof cylinder 63 is provided on the upper surface of the second connecting plate 61, a foolproof groove 65 adapted to the foolproof block 4 is provided on the lower surface of the foolproof cylinder 63, the lower conductive piece 64 is connected to the conductive copper part 13 through the conductive slot 21, and an upper conductive piece 62 connected to the power tool circuit is provided on the upper surface of the second connecting plate 61, and the upper conductive piece 62 is electrically connected to the second connecting plate 61.

[0020] By setting the mounting plate 12 and conductive copper parts 13, when the bottom battery is designed as a double-row battery 11 or a single-row battery 5, since the width design of the single-row battery 5 and the double-row battery 11 is the same, only the size of the lower cover 1 needs to be changed, while the size of the upper cover 2, mounting plate 12 and conductive copper parts 13 does not need to be changed and can all be used interchangeably. Subsequently, after the lower cover 1 and the upper cover 2 are combined, the conductive slot 21 in the upper cover 2 can correspond exactly to the conductive copper parts 13. When the power tool is connected to the upper cover 2 through the plug 6, the power tool can be inserted into the conductive slot 21 through the lower conductive piece 64 on the plug 6 and contact the conductive copper parts 13, so that the double-row battery 11 or the single-row battery 5 can supply power to the power tool. There is no need to use new molds for production, reducing production costs.

[0021] A first connecting part is provided between the top cover 2 and the first connecting plate 3. The bottom end of the first connecting part is connected to the first connecting plate 3, and the top end of the first connecting part is connected to the top cover 2. The height of the first connecting part is greater than the height of the conductive copper part 13.

[0022] The first connecting part is positioned higher than the conductive copper part 13, so that the horizontal position of the upper cover 2 is higher than the top of the conductive copper part 13. This makes it easier for the lower conductive piece 64 to be inserted into the conductive copper part 13 through the conductive slot 21 for electrical connection when the plug 6 is attached to the upper cover 2.

[0023] A second connecting part is provided between the plug 6 and the second connecting plate 61. The bottom end of the second connecting part is fixedly connected to the second connecting plate 61, and the top end of the second connecting part is fixedly connected to the plug 6. The lower surface of the plug 6 is adapted to the upper surface of the upper cover 2.

[0024] The second connecting part allows the lower surface of the plug 6 to perfectly fit the upper surface of the cover 2, enabling the lower conductive piece 64 to accurately pass through the conductive slot 21 and connect to the conductive copper piece 13. Subsequently, the battery pack can supply power to the power tool by passing the current through the lower conductive piece 64 and the upper conductive piece 62 in sequence via the conductive copper piece 13.

[0025] Furthermore, the battery can be a dual-row or single-row design. When the battery is a dual-row design, it is a dual-row battery 11 composed of six cells. The foolproof block 4 is located on the left side of the foolproof base 31. The position of the foolproof cylinder 63 is on the same vertical line as the position of the foolproof block 4. The voltage of the dual-row battery 11 is 21.6V. The lower cover 1 is designed to be taller, and the height of the lower cover 1 is greater than the height of the dual-row battery 11. When the battery is a single-row design, it is a single-row battery 5 composed of three cells. The foolproof block 4 is located on the right side of the foolproof base 31. The position of the foolproof cylinder 63 is on the same vertical line as the position of the foolproof block 4. The three cells of the single-row battery 5 are connected in series. The voltage of the single-row battery 5 is 10.8V. The lower cover 1 is designed to be the same as the initial design, and the height of the lower cover 1 is greater than the height of the single-row battery 5.

[0026] When the bottom battery is designed in a double row, the voltage of the double row battery 11 is 21.6V. At this time, the anti-foolproof block 4 is placed on the left side of the anti-foolproof base 31, and the anti-foolproof cylinder 63 on the plug 6 is placed in the corresponding position, so that the power tool is fastened to the anti-foolproof block 4 on the left side through the anti-foolproof groove 65 on the back of the anti-foolproof cylinder 63. When the bottom battery is designed in a single row, the voltage of the single row battery 5 is 10.8V. At this time, the foolproof block 4 is placed on the right side of the foolproof seat 31, and the foolproof cylinder 63 on the plug 6 is adjusted accordingly so that the power tool is fastened to the right side of the foolproof block 4 through the foolproof groove 65 on the back of the foolproof cylinder 63.

[0027] Depending on the voltage, the foolproof block 4 is installed in different positions to give the battery pack a foolproof structure. This ensures that the two battery packs with different voltages are only compatible with DC power tools with different voltages. This avoids the problem that if the plug is inserted incorrectly, the tool's internal circuits and components may be damaged due to increased voltage, or the tool may not be able to reach its rated working state due to decreased voltage, thus affecting the efficiency of use.

[0028] Furthermore, a buckle 23 protrudes from the side of the top cover 2 away from the conductive slot 21, and a slot 22 is formed on the upper surface of the top cover 2 outside the buckle 23. By setting the buckle 23 and the buckle slot 22, the corresponding power tool connection point is provided with a protrusion that matches the slot 22 and a groove that matches the buckle 23. This facilitates the connection of the battery pack with the power tool through the conductive slot 21, and the power tool is engaged by the slot 22 and the buckle 23, which increases the stability of the battery pack during use and prevents the battery pack from falling off due to shaking, thus further improving stability.

[0029] The above are merely preferred embodiments of this utility model and are not intended to limit this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A dual-voltage universal battery pack structure, characterized in that: Includes a lower cover (1), an upper cover (2), and a plug (6). The lower cover (1) contains a battery, and the top of the battery is provided with a mounting plate (12). The upper surface of the mounting plate (12) is provided with a conductive copper part (13) connected to the battery circuit. The upper surface of the upper cover (2) is provided with a conductive slot (21) adapted to the conductive copper part (13). The front end of the upper cover (2) is provided with a first connecting plate (3). The upper surface of the first connecting plate (3) is provided with a foolproof seat (31). The upper surface of the foolproof seat (31) is provided with a foolproof block (4). The plug (6) is located at the interface of the power tool. The front end of the plug (6) is provided with a second connecting plate (61). The lower surface of the plug (6) is provided with a lower conductive piece (64) extending into the conductive slot (21). The upper surface of the second connecting plate (61) is provided with a foolproof cylinder (63). The lower surface of the foolproof cylinder (63) is provided with a foolproof groove (65) that is compatible with the foolproof block (4).

2. The dual-voltage universal battery pack structure according to claim 1, characterized in that, The lower conductive sheet (64) is connected to the conductive copper part (13) through the conductive slot (21), and the upper surface of the second connecting plate (61) is provided with an upper conductive sheet (62) connected to the power tool circuit. The upper conductive sheet (62) is connected to the second connecting plate (61) by circuit.

3. The dual-voltage universal battery pack structure according to claim 1, characterized in that, The battery can be a dual-row or single-row design; When the battery is a double-row design, the battery is a double-row battery (11) composed of six cells. The anti-fool block (4) is located on the left side of the anti-fool base (31). The position of the anti-fool cylinder (63) is on the same vertical line as the position of the anti-fool block (4). When the battery is a single-row design, the battery is a single-row battery (5) composed of three cells. The foolproof block (4) is located on the right side of the foolproof base (31). The position of the foolproof cylinder (63) is on the same vertical line as the position of the foolproof block (4).

4. The dual-voltage universal battery pack structure according to claim 3, characterized in that, The voltage of the dual-row battery (11) is 21.6V. The lower cover (1) is designed to be taller, and the height of the lower cover (1) is greater than the height of the dual-row battery (11).

5. The dual-voltage universal battery pack structure according to claim 3, characterized in that, The three cells of the single-row battery (5) are connected in series. The voltage of the single-row battery (5) is 10.8V. The lower cover (1) is in the initial design and the height of the lower cover (1) is greater than the height of the single-row battery (5).

6. The dual-voltage universal battery pack structure according to claim 1, characterized in that, A first connecting part is provided between the upper cover (2) and the first connecting plate (3). The bottom end of the first connecting part is connected to the first connecting plate (3), and the top end of the first connecting part is connected to the upper cover (2). The height of the first connecting part is greater than the height of the conductive copper part (13).

7. The dual-voltage universal battery pack structure according to claim 1, characterized in that, A second connecting part is provided between the plug (6) and the second connecting plate (61). The bottom end of the second connecting part is fixedly connected to the second connecting plate (61), and the top end of the second connecting part is fixedly connected to the plug (6). The lower surface of the plug (6) is adapted to the upper surface of the cover (2).

8. The dual-voltage universal battery pack structure according to claim 1, characterized in that, The upper cover (2) has a buckle (23) protruding on the side away from the conductive slot (21), and a slot (22) is provided on the upper surface of the upper cover (2) and outside the buckle (23).

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