A battery pack

Abstract

The application relates to the field of power supply devices, and particularly discloses a battery pack which comprises a main body shell, at least one group of chargeable battery units arranged in the main body shell, a circuit board electrically connected with the chargeable battery units, and a discharge terminal group arranged on the circuit board, wherein the discharge terminal group comprises a positive output terminal, a communication output terminal and a negative output terminal; the positive output terminal and the negative output terminal are arranged horizontally on the circuit board, and the communication output terminal is arranged vertically on the circuit board, so that the space occupation of the circuit board in the vertical direction is effectively reduced, the problem of thickness increase of the battery pack caused by vertical arrangement is avoided, and the miniaturization and lightness of the battery pack are more conducive to design; the positive output terminal and the negative output terminal are arranged horizontally on the circuit board, so that the positive output terminal and the negative output terminal can have a larger contact area with a power receiving terminal of an electric tool; since the positive output terminal and the negative output terminal flow through a load current (a large current), the larger contact area makes the electric conduction and heat conduction performance better.

Description

Technical Field

[0001] This utility model relates to a battery pack. Background Technology

[0002] With the rapid development of portable electronic devices, power tools, and new energy vehicles, rechargeable battery packs, as core energy supply components, directly affect the device's range, safety, and ease of use through their performance and structural design. Traditional battery packs typically include a main casing, battery cells, a circuit board, and discharge terminal blocks for connecting external devices. The layout of these discharge terminal blocks has a significant impact on the battery pack's electrical stability and space utilization.

[0003] Based on an understanding of the relevant technologies, the discharge terminal groups of a battery pack are typically arranged horizontally or vertically on the circuit board. For example, some battery packs arrange the positive, negative, and communication terminals all horizontally, which not only results in limited space above the circuit board but also leads to denser soldering points below the board, making the soldering process more difficult. Other designs arrange all terminals vertically, but this increases the vertical space occupied by the circuit board, hindering the miniaturization and thinning of the battery pack. Utility Model Content

[0004] The purpose of at least one specific embodiment of this utility model is to overcome the defects of the prior art and provide a battery pack.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A battery pack, comprising:

[0007] Main body shell;

[0008] At least one set of rechargeable battery units is disposed inside the main body housing;

[0009] A circuit board is disposed within the main housing and is electrically connected to the rechargeable battery unit;

[0010] A discharge terminal group is disposed on the circuit board, which includes a positive output terminal, a communication output terminal, and a negative output terminal;

[0011] Terminal hole group for exposing the discharge terminal group, including a positive terminal hole, a communication terminal hole and a negative terminal hole corresponding to the discharge terminal group;

[0012] The positive output terminal and the negative output terminal are respectively arranged horizontally on the circuit board, and the insertion plane corresponding to their elastic clamping port is parallel to the plane of the circuit board.

[0013] The communication output terminal is axially arranged on the circuit board, and the insertion plane corresponding to its elastic clamping port is perpendicular to the plane of the circuit board.

[0014] Furthermore, the highest points of the positive output terminal and the negative output terminal define a virtual height plane above the circuit board. The height plane is parallel to the plane of the circuit board, and the axial height of the communication output terminal does not exceed the height plane.

[0015] Furthermore, both the positive output terminal and the negative output terminal include elastic clamping arms, and the elastic clamping arms of the positive output terminal and / or the negative output terminal extend outward and protrude from the outer edge of the circuit board to approach the end hole group.

[0016] Furthermore, the battery pack also includes a battery pack frame, the circuit board is mounted on the battery pack frame, the battery pack frame is adapted to limit the installation of the rechargeable battery unit, and has an axially extending protruding first rib at the position corresponding to the elastic clamping arm, and the inner wall of the main body shell is correspondingly provided with an axially extending protruding second rib, the first rib and the second rib are respectively located on both sides of the elastic clamping arm to limit and support the axial elastic change of the elastic clamping arm.

[0017] Furthermore, the positive output terminal, the communication output terminal, and the negative output terminal are arranged sequentially at intervals along the lateral direction of the circuit board, and the lateral span distance between the positive output terminal and the negative output terminal accounts for more than 70% of the lateral width distance of the circuit board.

[0018] Furthermore, the projected area of ​​the communication output terminal on the circuit board is smaller than the projected area of ​​the positive output terminal or the negative output terminal on the circuit board.

[0019] Furthermore, the distance between the highest point of the positive output terminal and the negative output terminal and the surface of the circuit board is smaller than the diameter of the rechargeable battery unit;

[0020] Among the positive output terminal, communication output terminal, and negative output terminal, the distance between adjacent terminals is less than the width of any single terminal.

[0021] Furthermore, the main body shell includes a base and a protrusion extending outward from the outer surface of the base. The protrusion includes a top platform and a connecting portion connecting the top platform and the base. The end hole group is disposed on the side of the connecting portion facing the tool.

[0022] Furthermore, a longitudinally extending guide rail is formed between the top platform and the base, the guide rail including a first guide rail and a second guide rail;

[0023] The axial height of the first guide rail and the second guide rail defines the first virtual plane P1 and the second virtual plane P2, and the end hole group is located between the first virtual plane P1 and the second virtual plane P2.

[0024] Another battery pack provided by this utility model includes:

[0025] Main body shell;

[0026] At least one set of rechargeable battery units is disposed inside the main body housing;

[0027] A circuit board is disposed within the main housing and is electrically connected to the rechargeable battery unit;

[0028] A discharge terminal group, suitable for plugging into a plate-shaped power tool terminal group, is disposed on the circuit board, and includes a positive output terminal, a communication output terminal, and a negative output terminal with a flexible clamping port;

[0029] Terminal hole group for exposing the discharge terminal group, including a positive terminal hole, a communication terminal hole and a negative terminal hole corresponding to the discharge terminal group;

[0030] The positive output terminal and the negative output terminal are respectively arranged horizontally on the circuit board, and the insertion plane corresponding to their elastic clamping port is parallel to the plane of the circuit board.

[0031] The highest points of the positive output terminal and the negative output terminal define a virtual height plane above the circuit board. The height plane is parallel to the plane of the circuit board, and the axial height of the communication output terminal does not exceed the height plane.

[0032] The beneficial effects of this utility model are as follows: 1. The positive output terminal and negative output terminal of the battery pack of this application are arranged horizontally on the circuit board, which can have a larger contact area with the power receiving terminal of the power tool. Since the positive output terminal and negative output terminal will carry load current (large current), the larger contact area makes the conductivity and heat conduction performance better.

[0033] 2. This application arranges the positive and negative output terminals horizontally and the communication output terminals vertically, which effectively reduces the space occupied by the circuit board in the vertical direction, avoids the problem of increased battery pack thickness caused by vertical arrangement, and is more conducive to realizing the miniaturization and thinning design of the battery pack.

[0034] 3. The horizontally arranged positive and negative terminals combined with the axially arranged communication terminals make the soldering points on the bottom of the circuit board more dispersed (compared to the full horizontal arrangement), reducing the point density in the soldering area of ​​the circuit board, reducing the risk of short circuits at the solder joints, and alleviating the heat dissipation problem caused by excessively dense solder joints. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the power supply device in Embodiment 1 of this utility model.

[0037] Figure 2 This is a structural schematic diagram of the power supply device from another angle in Embodiment 1 of this utility model.

[0038] Figure 3 This is a schematic diagram of the assembly of the power supply device in Embodiment 1 of this utility model.

[0039] Figure 4 This is a schematic diagram of the left side of the power supply device in Embodiment 1 of this utility model.

[0040] Figure 5 This is a schematic diagram of the right side of the power supply device in Embodiment 1 of this utility model.

[0041] Figure 6 This is a front view schematic diagram of the power supply device in Embodiment 1 of this utility model.

[0042] Figure 7 This is a schematic diagram of the main body shell distribution structure of the power supply device in Embodiment 1 of this utility model.

[0043] Figure 8 This is a top view of the power supply device in Embodiment 1 of this utility model.

[0044] Figure 9 This is a schematic diagram showing the distribution of the connecting and non-connecting parts of the power supply device in Embodiment 1 of this utility model.

[0045] Figure 10 This is a diagram showing the dimensional relationship between the top platform and the base of the power supply device in Embodiment 1 of this utility model.

[0046] Figure 11 This is a cross-sectional schematic diagram of the power supply device in Embodiment 1 of this utility model.

[0047] Figure 12 This is a schematic diagram of the configuration of the discharge terminal group on the circuit board in Embodiment 1 of this utility model.

[0048] Figure 13This is a schematic diagram of another configuration of the discharge terminal group on the circuit board in Embodiment 1 of this utility model.

[0049] Figure 14 This is a schematic diagram of the power supply device charging a 3C electronic device in Embodiment 1 of this utility model.

[0050] Figure 15 This is a schematic diagram of the assembly of the power supply device and the power tool in Embodiment 1 of this utility model.

[0051] Figure 16 This is a schematic diagram of the battery mounting section of a power tool.

[0052] Figure 17 This is a cross-sectional schematic diagram of the power supply unit and power tool after assembly.

[0053] Figure 18 This is a schematic diagram of the structure after the power supply unit and power tool are assembled.

[0054] Figure 19 This is a schematic diagram of one of the power supply devices in Example 2.

[0055] Figure 20 This is a schematic diagram of another angle of one of the power supply devices in Embodiment 2.

[0056] Figure 21 This is a schematic diagram of the second power supply device in Example 2.

[0057] Figure 22 This is a schematic diagram of the second power supply device in Embodiment 2 from another angle;

[0058] Figure 23 This is a schematic diagram of the positive output terminal arrangement structure in Embodiment 1 of this utility model. Detailed Implementation

[0059] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0060] Example 1

[0061] Reference Figures 1 to 3In one exemplary embodiment of the power supply device 100 shown, the power supply device 100 includes a set of rechargeable battery units 20 disposed within the main body housing 10, a circuit board 30, and a discharge terminal group 40 disposed on the circuit board 30. The rechargeable battery units 20 and the circuit board 30 are connected by conductive sheets 50 (such as nickel sheets). The discharge terminal group 40 is adapted to insert a sheet-shaped power tool terminal group.

[0062] Combination Figure 9 and Figure 18 As shown, the power supply device 100 can be connected to the power tool 200 and supply power to the power tool 200 through the connection part 300. The discharge terminal group 40 is provided on the side of the power supply device 100 facing the power tool 200. The connection part 300 is provided with a corresponding end hole group 310. The connection part 300 can be connected to the power receiving terminal group 210 (plate-shaped power tool terminal group) of the power tool 200. That is, the power receiving terminal group 210 passes through the end hole group 310 and is electrically connected to the discharge terminal group 40, thereby supplying power to the power tool 200.

[0063] Specifically, the discharge terminal group 40 includes at least a positive output terminal 401, a communication output terminal 402, and a negative output terminal 403. The terminal hole group 310 includes a positive terminal hole 3101, a communication terminal hole 3102, and a negative terminal hole 3103. The positive input terminal 2101 of the power receiving terminal group 210 passes through the positive terminal hole 3101 and is electrically connected to the positive output terminal 401. The communication input terminal 2102 of the power receiving terminal group 210 passes through the communication terminal hole 3102 and is electrically connected to the communication output terminal 402. The negative input terminal 2103 of the power receiving terminal group 210 passes through the negative terminal hole 3103 and is electrically connected to the negative output terminal 403.

[0064] In this embodiment, the end hole group 310 has one and only one opening direction, which extends along the longitudinal direction.

[0065] Continue to refer to Figure 2 and Figure 3 As shown, the connection portion 300 includes a guide rail for connecting to the power tool 200 and a locking groove 320 for locking the power device 100 onto the power tool 200. By operating (such as pressing or sliding) the latch actuator 220 provided on the power tool 200, the latch 230 is actuated, causing the latch 230 to separate from the locking groove 320, thereby performing an unlocking operation to facilitate the removal of the power device 100 from the power tool 200.

[0066] Specifically, refer to Figure 5 and Figure 6As shown, the guide rail includes a first guide rail 330 and a second guide rail 340 arranged opposite to each other. The first guide rail 330 and the second guide rail 340 are located on both sides of the discharge terminal group 40 in the longitudinal direction. The first guide rail 330 and the second guide rail 340 define a first virtual plane P1 and a second virtual plane P2 in the transverse direction by their axial height. The first virtual plane P1 and the second virtual plane P2 are parallel to each other and parallel to the base plane P, which is a virtual plane suitable for planar support placement. The end hole group 310 corresponding to the discharge terminal group 40 is located between the first virtual plane P1 and the second virtual plane P2. Further, referring to… Figure 7 As shown, the main body shell 10 includes a protrusion 10a and a base 10b with a three-dimensional layered structure. The protrusion 10a extends outward from the outer surface of the base 10b. Specifically, the protrusion 10a includes a top platform 350 and a connecting portion 360 extending from the inner side of the top platform 350. The connecting portion 360 is connected to the outer surface of the base 10b. Thus, the top platform 350 will be located at the top of the main body shell 10. The connection between the connecting portion 360 and the base 10b constitutes the support structure of the top platform 350. The connecting portion 300 constitutes a part of the protrusion 10a.

[0067] In short, the main body shell 10 includes a base 10b and a protrusion 10a protruding outward from its outer surface. The protrusion 10a has a stepped structure: the top is a top platform 350, and the middle part is connected to the base 10b through an inwardly recessed connecting part 360, forming a three-level three-dimensional layered structure of "base 10b → connecting part 350 → top platform 360", wherein the top platform 350 is located at the top of the main body shell 10.

[0068] Specifically, the connecting portion 300 constitutes part of the protrusion 10a, as detailed below:

[0069] In the axial direction, the connecting portion 360 has a height value within a certain range, such as 3-10 mm, preferably 4.0-6.0 mm, more preferably 5.0-6.0 mm, such as 5.0 mm, 5.1 mm, 5.2 mm, etc. In the transverse direction, the outer edge of the top platform 350 extends outward at least partially beyond the connecting portion 360, and the outer edge has a distance difference within a certain range from the outer surface of the connecting portion 360, such as 3.0-8.0 mm, preferably 4.0 mm. Thus, the top platform 350... The base 10b, combined with the connecting portion 360 located between the two, forms the guide rail; the locking groove 320 is preferably provided on the outer surface of the top platform 350, or provided at the end of the guide rail, so that the connecting portion including the guide rail (first guide rail 330 and second guide rail 340) and the locking groove 320 is formed on the protrusion 10a, forming a part of the protrusion 10a. When the power device 100 is connected to the power tool 200, the connecting portion 300 is surrounded and covered by the battery mounting portion 240 of the power tool 200.

[0070] Combination Figure 9 Figure 18 As shown, the aforementioned protrusion 10a also includes a non-connecting portion 500. The non-connecting portion 500 and the connecting portion 300 are separated by a virtual dividing line BL. The non-connecting portion 500 extends to one side from the connecting portion 300 to form an extended structure that smoothly connects with the connecting portion 300, so as to form a complete protrusion 10a. When viewed from any side of the power supply device 100, the top surface of the aforementioned protrusion 10a (or top platform 350) is flush or substantially flat, so that the entire top surface of the protrusion (or the top surface of the top platform) presents a continuous and flat visual effect in the side view direction.

[0071] Specifically, the top surface of the protrusion includes a middle part surface (middle plane area) S1 and a peripheral part surface (peripheral chamfered area) S2 surrounding the middle part surface S1. The middle part surface S1 and the peripheral part surface S2 can be flush or substantially flush. In this specific embodiment, the middle part surface S1 and the peripheral part surface S2 are substantially flush, and the peripheral part adopts a chamfered arc surface design. The peripheral part surface S2 has a small offset distance D from the middle part surface S1, and the offset distance D is less than 5mm.

[0072] That is, the top surface of the non-connecting part 500 is at the same height as the top surface of the connecting part 300; or, the top surface of the non-connecting part 500 extends from the connecting part 300 in the longitudinal direction as an outwardly tapering arc surface (as shown in the front outline 3502 below).

[0073] The height of the arc surface decreases from the connecting part 300 towards the far end, and the axial height difference formed by the decrease is less than 5mm.

[0074] Furthermore, it can be understood that: "Flat top surface" means that the outermost surface of the convex part 10a (or the top platform 350) is flat when viewed from any side, without any undulations or steps, while "basically flat" means that a slight height difference is allowed within the range of 0-5mm without affecting the visual appearance, but the overall visual effect has no significant sense of step, and the height difference between different areas can be ignored.

[0075] Furthermore, the edge of the top surface S1 extends outward to form an outer contour, as shown in the peripheral surface S2 above. This outer contour can continue to be flush with the edge of the top surface S1 or be designed as a smooth curved surface, that is, the edge of the top platform 350 extends outward to form an outer contour, which is coplanar and flush with the top surface; or the outer contour is a smooth transition curved surface.

[0076] Specifically, refer to Figures 4 to 6 As shown, the outer contour includes side outer contours 3501 on both sides and front outer contour 3502 at the front end. The front outer contour 3502 is located above the end hole group 310 to cover and block the opening of the end hole group 310.

[0077] For details, please refer to... Figure 5 As shown above, the end hole group 310 includes a positive end hole 3101, a communication end hole 3102, and a negative end hole 3103. The end hole group 310, that is, any positive end hole 3101, communication end hole 3102, and negative end hole 3103, has one and only one opening direction, which extends along the longitudinal direction. When viewed from the axial view facing the top platform 350, the opening of the end hole group 310 is not visible.

[0078] Reference Figure 5 As shown, the end hole group 310 is formed on the connecting part 360, and its axial height is less than the axial height of the connecting part 360. Furthermore, the axial height of the end hole group 310 is less than the axial height of the protrusion 10a. When the power supply device 100 is connected to the power tool 200, the non-connecting part 500 is not surrounded and covered by the feet of the power tool. More preferably, a light display window for user interaction, such as the display window of a power indicator light strip, is also provided on the non-connecting part 500. More preferably, the light display window is located on the upper surface of the non-connecting part 500 so that the user can directly observe the display status of the light strip during operation. In this case, the light display window can be specifically set on the top surface or the outer contour.

[0079] It needs to be further explained that:

[0080] The aforementioned guide rail passes through the connecting portion 300 and the non-connecting portion 500 to connect, and a stop portion 600 is formed or provided at the connection point. The stop portion 600 is suitable for limiting the insertion stroke of the power supply device 100 relative to the power tool.

[0081] In this embodiment, we continue to refer to... Figure 1 As shown, the main body shell 10 includes an upper shell 101 and a lower shell 102. The top platform 350 is connected to the upper shell 101 of the main body shell 10 through the connecting part 360. During processing, the top platform 350, the connecting part 360 and the upper shell 101 can be integrally formed. After the top platform 350, the connecting part 360 and the upper shell 101 are integrally formed, they are connected to the lower shell 102 and can be assembled into the main body shell 10 of the entire power supply device 100, which is convenient to assemble.

[0082] Thus, the upper shell 101 and the lower shell 102 are combined to form the base 10b, and the top platform 350 and the connecting part 360 are combined to form the protrusion 10a. The protrusion 10a and the upper shell 101 are preferably integrally formed.

[0083] In this embodiment, the outer contours of the upper shell 101 and the lower shell 102 are basically consistent, and the outer edges of the upper shell 101 and the lower shell 102 are flush and coplanar.

[0084] Referring to the main view of the power supply device 100, when viewed from the main view direction, in the direction of the central axis of the first virtual plane P1 and the second virtual plane P2, the projection of the boss 350 is completely located within the top surface area of ​​the upper housing 101, or the projection of the protrusion 10a is completely located within the projection range of the base 10b. Furthermore, the ratio of the projection area of ​​the top platform 350 to the top surface area of ​​the upper housing 101 is 0.5-0.9.

[0085] Specifically, refer to Figure 10 As shown, the outer edge of the top platform 350 includes a left edge, a right edge, a front edge, and a rear edge. Correspondingly, the outer edge of the base 10b includes a left edge, a right edge, a front edge, and a rear edge. There is a distance between any one or more outer edges of the top platform 350 and the corresponding outer edge of the base 10b. Let L1 be the distance between the front edge of the top platform 350 and the front edge of the base 10b, L2 be the distance between the rear edge of the top platform 350 and the rear edge of the base 10b, L3 be the distance between the left edge of the top platform 350 and the left edge of the base 10b, and L4 be the distance between the right edge of the top platform 350 and the right edge of the base 10b. Where L1>L2, L1>L3, L1>L4; L2≥0; L3=L4≥0.

[0086] More preferably, L1 is located in the range of 8.0-15.0 mm, more preferably 8.0-13.0 mm, and even more preferably 9.0-11.0 mm, such as 9.0 mm, 10.0 mm, 10.4 mm, and 10.5 mm. This design, by shortening the distance between the front edge of the top platform 350 and the front edge of the base 10b, can effectively reduce the idle travel distance at the front end when the plug / interface is inserted, and improve the assembly alignment efficiency compared to conventional power tool battery packs.

[0087] When L2 = 0, the rear edge of the top platform 350 and the rear edge of the base 10b are completely flush in the longitudinal direction of the main body shell 10, that is, the edge projections of the two are in the same vertical plane, with no offset in the front-to-back direction. In this state, only the front end (front edge) of the top platform 350 protrudes outward, and the left and right edges protrude symmetrically (L3 = L4 ≥ 0), while the rear end maintains the same shape as the base 10b, forming an edge structure of "protruding front and flush rear". When L2 > 0, it is convenient to arrange the data cable for winding 3C equipment between the two edges. In particular, L2 is preferably 0-5.0mm, such as 4.5mm or 4.6mm.

[0088] When L3 = L4 = 0, the left and right edges of the top platform 350 are flush with the left and right edges of the base 10b. The top platform 350 is completely recessed within the width of the base 10b in the horizontal direction, forming a symmetrical rectangular or square outline (view from above). The projection plane of the top platform 350 is completely aligned with the base 10b in the horizontal direction, with no offset in the width direction, and its horizontal dimension is equal to the width of the base 10b. When L3 = L4 > 0, the edges of the top platform 350 are located inside the edges of the base 10b, that is, the left and right edges of the top platform 350 are recessed inward relative to the left and right edges of the base 10b. The horizontal width of the top platform 350 is less than the width of the base 10b. The first guide rail 330 and the second guide rail 340 are formed by extending from the left and right edges of the top platform 350 (because the top platform is recessed, the guide rail position is closer to the central axis). The two virtual planes are defined by the axial height of the guide rails. The lateral spacing is reduced, and the discharge terminal group 40 (end hole group) is surrounded by a narrower guide rail area, which improves the lateral positioning accuracy of the discharge terminal group 40. When the power receiving terminal group 210 of the power tool 200 is inserted, the fault tolerance space in the left and right directions is reduced, the forced alignment effect is enhanced, and the risk of poor terminal contact caused by lateral offset is reduced. After the top platform 350 is recessed, the left and right edges of the base 10b expand outward to form cantilever (width L3=L4), which can fit with the battery mounting part 240 of the power tool 200 to provide additional lateral support. Especially during the insertion process, the cantilever of the base 10b contacts the tool housing, sharing the lateral load of the top platform guide rail and reducing terminal misalignment caused by the deformation of the guide rail under force. Preferably, L3=L4 is preferably 0-7.0mm, more preferably 0-6.0mm, such as 5.9mm or 6.0mm.

[0089] Continue to refer to Figure 3 As shown, in this embodiment, the rechargeable battery unit 20 is limited and disposed within the main body shell 10 or the base 10b by the battery pack frame 201. The battery pack frame 201 can be provided with a buckle 202. The circuit board 30 is fixed to the surface of the rechargeable battery unit 20 by the buckle 202. After the overall structure composed of the top platform 350, the connecting part 360 and the upper shell 101 is spliced ​​with the lower shell 102, the rechargeable battery unit 20 and the circuit board 30 can be covered. After the overall structure composed of the top platform 350, the connecting part 360 and the upper shell 101 is opened relative to the lower shell 102, the circuit board 30 can be manually removed from the surface of the rechargeable battery unit 20. The circuit board 30 does not require screws for installation and removal, making the operation convenient.

[0090] Additionally, the locking groove 320 is formed on the surface of the top platform 350. The outer edge of the top platform 350 forms an outer contour, which includes side outer contours 3501 on both sides and front outer contour 3502 at the front end. One side outer contour 3501 forms a first guide rail 330 with the top surface of the upper housing 101, and the other side outer contour 3501 forms a second guide rail 340 with the top surface of the upper housing 101. The front outer contour 3502 is mounted on the top platform 350 on the side facing the power tool 200. The end hole group 310 is formed on the connecting part 360 and located below the front outer contour 3502. The front outer contour 3502 above the end hole group 310 serves to shield foreign objects and also provides a certain degree of waterproofing, preventing foreign objects or rainwater falling from above the power device 100 from directly entering the end hole group 310.

[0091] Thus, when viewed from the front view facing the top platform 350, the end hole group 310 is not visible, as it is obscured and covered by the front outer contour 3502.

[0092] Furthermore, when the power supply unit 100 is connected to the power tool 200, the front outer contour 3502 can also serve as a guide transition. When the power supply unit 100 is initially inserted into the battery mounting portion 240 of the power tool 200's footplate, the front outer contour 3502 on the top platform 350 first extends into the battery mounting portion 240 of the power tool 200's footplate. Due to the arc-shaped structure design of the outer surface of the front outer contour 3502, the connecting portion 300 of the power supply unit 100 can be smoothly inserted into the battery mounting portion 240 of the power tool 200's footplate, thus serving as a guide transition during the initial insertion process. After the connecting portion 300 and the battery mounting portion 240 of the footplate are initially inserted, the two guide strips 250 on the inner side of the battery mounting portion 240 of the footplate will respectively extend into the first guide rail 330 and the second guide rail 340 to form a sliding fit. This allows for... The power supply device 100 forms a longitudinal limit, and can only slide in the extension direction of the first guide rail 330 and the second guide rail 340. In the extension direction of the first guide rail 330 and the second guide rail 340, the power supply device 100 gradually approaches the power tool 200 until the end hole group 310 on the power supply device 100 is fully connected with the power receiving terminal group 210 on the power tool 200. At this time, the power supply device 100 is installed in place on the battery mounting part 240 of the foot plate of the power tool 200. At the same time, the latch 230 on the power tool 200 also slides to the position of the locking groove 320 on the top platform 350 and falls into the locking groove 320. The installed power supply device 100 can no longer slide in the extension direction of the first guide rail 330 and the second guide rail 340. The power supply device 100 is then installed and locked at the battery mounting part of the foot plate of the power tool. The area included in the connection portion 300 on the power supply device 100 is the area covered by the battery mounting portion 240 of the foot plate.

[0093] It should be noted that the lengths of the first guide rail 330 and the second guide rail 340 are determined by the sliding stroke during the assembly of the power supply device 100. In the design, the length of the side profile 3501 on the top platform 350 can be greater than or equal to the lengths of the first guide rail 330 and the second guide rail 340.

[0094] Furthermore, since the connecting part 360, the first guide rail 330, and the second guide rail 340 are all located in the space between the first virtual plane P1 and the second virtual plane P2, the height of the connecting part 360 determines the axial height of the first guide rail 330 and the second guide rail 340. To emphasize the compactness of the connection between the top platform 350 and the upper housing 101, the height of the connecting part 360 needs to be flexible. Since the end hole group 310 of the power supply device 100 is located on the connecting part 360, the design height of the connecting part 360 cannot be lower than the height of the end hole group 310. As mentioned above, the end hole group 310 includes a positive terminal hole 3101 and a communication terminal hole 310. 2. Corresponding to the negative terminal hole 3103, the discharge terminal group 40 inside the terminal hole group 310 includes a positive output terminal 401, a communication output terminal 402, and a negative output terminal 403. When the positive output terminal 401, communication output terminal 402, and negative output terminal 403 are arranged horizontally on the circuit board 30 inside the power supply device 100, the corresponding positive terminal hole 3101, communication terminal hole 3102, and negative terminal hole 3103 on the connecting part 360 are horizontally extending terminal holes. When the positive output terminal 401, communication output terminal 402, and negative output terminal 403 are arranged vertically on the circuit board 30, the corresponding positive terminal hole 3101 on the connecting part 360 is... 101. The communication terminal hole 3102 and the negative terminal hole 3103 are longitudinally extending terminal holes. For example, if the length of the positive terminal hole 3101 is set to L and the width to W, since the terminal hole is a strip hole, L > W. If the discharge terminal group 40 is arranged laterally, the minimum height of the connecting part 360 only needs to be greater than W. If the discharge terminal group 40 is arranged longitudinally, the minimum height of the connecting part 360 needs to be greater than L. Therefore, in this embodiment, the positive output terminal 401, the communication output terminal 402, and the negative output terminal 403 are preferably arranged laterally on the circuit board 30. In this way, the minimum height of the connecting part 360 only needs to be greater than W. The dimensions are highly flexible in the design, which can improve the compactness between the top platform 350 and the upper housing 101. In addition, after the positive output terminal 401, communication output terminal 402 and negative output terminal 403 are arranged horizontally on the circuit board 30, the width of each output terminal can be appropriately increased. This can increase the contact area with the power receiving terminal group 210 on the power tool 200, and the electrical connection between the discharge terminal group 40 and the power receiving terminal group 210 is better. Moreover, the increased width of each output terminal will not affect the height design of the connecting part 360. With the overall height of the connecting part 360 remaining unchanged, the size design of the discharge terminal group 40 is more flexible.

[0095] Since the overall size of the communication output terminal 402 is smaller than that of the positive output terminal 401 and the negative output terminal 403, in some embodiments, the positive output terminal 401 and the negative output terminal 403 are arranged laterally on the circuit board 30, while the communication output terminal 402 is arranged axially on the circuit board 30. The projected area of ​​the communication output terminal 402 on the circuit board 30 is smaller than the projected area of ​​the positive output terminal 401 or the negative output terminal 403 on the circuit board 30. Correspondingly, the positive terminal hole 3103 and the negative terminal hole 3101 extend laterally on the surface of the main body housing 10, while the communication terminal hole 3102 extends axially on the surface of the main body housing 10. After installation, the highest point of the communication output terminal 402 should not be higher than the highest point of the positive output terminal 401 and the negative output terminal 403. This will not affect the height design of the connecting part 360. After the communication output terminal 402 is vertically arranged on the circuit board 30, the overall contact area between the communication output terminal 402 and the circuit board 30 is small. Only one support foot is needed to solder it to the circuit board 30. In this way, there are fewer soldering points in the area corresponding to the terminal below the circuit board 30, which makes soldering more convenient (if the discharge terminal group 40 is arranged horizontally on the circuit board 30, not only will the space for the terminal arrangement above the circuit board 30 be cramped, but the soldering points below the circuit board 30 will be denser, and the soldering process will be more difficult). The soldering points below the circuit board 30 are more dispersed (compared to the all-horizontal arrangement), which reduces the point density in the soldering area of ​​the circuit board 30, reduces the risk of short circuits at the solder joints, and alleviates the heat dissipation concentration problem caused by excessively dense solder joints. Therefore, the alternating horizontal and vertical arrangement of the discharge terminal group 40 also improves the flexibility of the discharge terminal group 40 on the circuit board 30.

[0096] Thus, the positive output terminal 401 and the negative output terminal 403 are arranged horizontally on the circuit board 30, and the opening direction of their elastic clamping ports (the insertion plane corresponding to the elastic clamping ports) is parallel to the plane of the circuit board 30.

[0097] Furthermore, the communication output terminal 402 is axially arranged on the circuit board 30, and the opening direction of its elastic clamping port (the insertion plane corresponding to the elastic clamping port) is perpendicular to the plane of the circuit board 30.

[0098] The highest points of the positive output terminal 401 and the negative output terminal 403 define a virtual height plane above the circuit board 30. The height plane is parallel to the plane of the circuit board 30, and the axial height of the communication output terminal 402 does not exceed the height plane.

[0099] Reference Figure 23As shown, both the positive output terminal 401 and the negative output terminal 403 include elastic clamping arms 4010. The elastic clamping arms 4010 of the positive output terminal 401 and / or the negative output terminal 403 extend outward and protrude from the outer edge of the circuit board 30 to approach the end hole group.

[0100] Specifically, the circuit board 30 is mounted on the battery pack frame 201. The battery pack frame 201 is adapted to limit the installation of the rechargeable battery unit 20 and has an axially extending first rib 2010 at the position corresponding to the elastic clamping arm 4010. The inner wall of the protrusion is correspondingly provided with an axially extending second rib 3503. The first rib 2010 and the second rib 3503 are respectively located on both sides of the elastic clamping arm 4010 to limit and support the axial elastic change of the elastic clamping arm 4010.

[0101] This design uses mechanical limiting to control the axial elastic deformation range of the elastic clamping arm, avoiding excessive bending or displacement caused by insertion / extraction forces or vibration. This ensures stable electrical contact between the elastic clamping ports of the positive and negative output terminals and the tool terminals, effectively improving the reliability of the terminal connection and structural durability. Combined with the layout of the elastic clamping arm extending outwards towards the end hole assembly, the conductive path is shortened while the rib support system enhances the impact resistance of the terminal assembly, making it suitable for the high-vibration, high-load usage scenarios of industrial power tools.

[0102] Overall, the positive output terminal 401, the communication output terminal 402, and the negative output terminal 403 are arranged sequentially and alternately along the lateral direction of the circuit board 30, and the lateral span between the positive output terminal 401 and the negative output terminal 403 accounts for more than 70% of the lateral width of the circuit board 30.

[0103] Furthermore, in order to achieve a thinner and lighter design for the battery pack 100, the distance between the highest point of the positive output terminal 401 and the negative output terminal 403 and the surface of the circuit board 30 is smaller than the diameter of the rechargeable battery cell 20.

[0104] In the positive output terminal 401, communication output terminal 402, and negative output terminal 403, the distance between adjacent terminals is less than the width of any single terminal.

[0105] Reference Figure 11 , Figure 23 and Figure 17 As shown, a clamping opening 3504 is formed between the front outer contour 3502 and the base. When the power supply device is plugged into the power tool, the clamping opening 3504 is adapted to clamp the terminal block 260 of the power tool therein (e.g., Figure 17 (As shown).

[0106] The synergistic effect of mechanical clamping force and terminal electrical contact force significantly improves the vibration and shock resistance of the connection system. This clamping structure not only provides axial restraint for the terminal block, but also, in conjunction with the design of the opening direction of the end hole group extending along the longitudinal central axis of the connection, forms a longitudinal alignment guide, ensuring precise alignment of the terminal block and the discharge terminal group during the insertion process and reducing the difficulty of insertion and removal operations.

[0107] Furthermore, as described above, the top surface of the front outer contour 3502 is an outwardly tapering arc surface, and the top surface of the front outer contour 3502, namely the outwardly tapering arc surface S2, is smoothly connected to the middle plane region S1 of the protrusion.

[0108] Continue to refer to Figure 17 As shown, the tangent direction of the arc-shaped surface is consistent with the tangent direction of the contact surface of the latch 230 disposed on the power tool, and is inclined from top to bottom. During the process of inserting the power device into the power tool, the arc-shaped surface will come into contact with the contact surface of the latch 230. The inclined tangent direction provides a clear longitudinal guide path for the insertion action, and plays a positioning and guiding role in the initial stage of power tool insertion, which facilitates the connection between the tool and the battery pack.

[0109] In this embodiment, the number of communication output terminals 402 can be designed to be two. The power supply device 100 has a protocol communication switching function. When the power supply device 100 is connected to the first platform power tool, the communication input terminal 2102 of the first platform power tool short-circuits the two communication output terminals 402 for the first protocol communication.

[0110] When the power supply unit 100 is connected to the second platform power tool, the communication input terminal 2102 of the second platform power tool is electrically connected to the two communication output terminals 402 respectively for second protocol communication.

[0111] Furthermore, the power supply device 100 in this embodiment also has a bidirectional USB-C port 60. The USB-C port 60 can discharge to 3C electronic devices. After the USB-C port 60 of the power supply device 100 is connected to a data cable, and the data cable is connected to a 3C electronic device, the 3C electronic device can be charged. After the USB-C port 60 of the power supply device 100 is connected to a municipal power supply through an adapter, it can also charge the rechargeable battery unit 20 inside. Specifically, the USB-C port 60 can be installed on the connecting part 360, the upper housing 101, the lower housing 102, or the top platform 350.

[0112] It should be noted that before the USB-C port 60 is installed, the power supply device 100 of this application can be connected to a municipal power supply via an adapter, and can also charge its internal rechargeable battery unit 20. Therefore, the power supply device 100 can be charged in two ways: one is to charge it by connecting the adapter via the USB-C port 60, and the other is to charge it by connecting the adapter via its own discharge terminal group 40.

[0113] In addition, regarding the design of the power supply unit 100 discharging 3C electronic devices, a wireless charging area 400 is provided on the surface of the lower housing 102 of the power supply unit 100. The wireless charging area 400 includes a magnetic ring and a wireless charging design. A bracket 370 is hinged to the top platform 350. When not in use, the bracket 370 can be stored in a groove 380 on the surface of the top platform 350. Furthermore, when the bracket 370 is made of metal, a magnetic block can be placed in the groove 380 at the free end of the bracket 370. When the bracket 370 rotates to the surface position of the top platform 350, the magnetic block can... The suction bracket 370 is easily stored in the groove 380. When the power device 100 needs to charge the 3C electronic device, the bracket 370 can be unfolded so that the bracket 370 is at a certain angle to the top platform 350. The entire power device 100 can be tilted and supported on the table by the bracket 370. At this time, the magnetic ring and wireless charging area at the bottom of the power device 100 face the user. The user can directly attach the 3C electronic device to the wireless charging area, and the power device 100 can wirelessly charge the 3C electronic device.

[0114] It should be noted that the hinge position between the bracket 370 and the top platform 350 is close to the locking groove 320 on the top platform 350. In some embodiments, the hinge end 370a of the bracket 370 and the top platform 350 is constructed as an inner wall surface of the locking groove 320. In this way, when the bracket 370 is hinged to the groove 380 on the top platform 350, the reserved gap space between the hinge end 370a of the bracket 370 and the inner wall surface of one end of the groove 380 can form the locking groove 320, and the locking groove 320 on the top platform 350 does not need to be opened separately.

[0115] Furthermore, to facilitate timely monitoring of the remaining power of the entire power supply unit 100, a power indicator light strip 301 is installed on the circuit board 30. The power indicator light strip 301 is preferably an RGB tri-color light strip, with its light-emitting end located on the surface of the top platform 350. Additionally, a trigger button 390 is installed on the top platform 350, at least partially located on the top surface of the non-connected portion 500, allowing it to be touched even when the power supply unit 100 is assembled with the power tool 200. The trigger button 390 is a capacitor. The touch-sensitive button 390 illuminates the power indicator strip 301 (RGB tri-color LED strip) when the user touches it. The color of the light indicates the remaining power of the power supply 100. For example, a green RGB tri-color LED strip indicates that the power supply 100 has sufficient power; a yellow RGB tri-color LED strip indicates that the power supply 100 has low power and charging is recommended; and a red RGB tri-color LED strip indicates that the power supply 100 has dangerously low power and needs to be charged immediately.

[0116] Example 2

[0117] Reference Figure 19-22 In another exemplary embodiment of the power supply device 100 shown, a guide rail region 70 (i.e., the first guide rail 330 and the second guide rail 340 in embodiment 1) and a data cable placement region 80 are formed between the top platform 350 and the base 10b (upper housing). A stop region 90 is provided between the guide rail region 70 and the data cable placement region 80 to ensure that the guide rail region 70 and the data cable placement region 80 are independent of each other and do not interfere with each other. The data cable 700 includes a cable 701 and a USB connector 702.

[0118] In one embodiment, a stop 90a is provided at the junction of the guide rail area 70 and the data cable placement area 80. The data cable placement area 80 includes a cable groove 801 for accommodating and clamping the cable 701 and a limiting groove 802 for limiting the USB connector 702. The stop 90a is suitable for limiting the insertion stroke of the power device 100 relative to the battery mounting part 240 of the foot plate. On the other hand, corresponding to the lead-out hole of the cable 701, one end of the cable 701 is fixedly electrically connected to the circuit board 30 and leads out from the lead-out hole, clamped in the cable groove 801, and the USB connector 702 is positioned in the limiting groove 802. When using the cable, the user can pull out the USB connector 702 and pull the cable 701 to pull the data cable 700 out of the data cable placement area 80 for use.

[0119] Furthermore, the aforementioned first guide rail 330, second guide rail 340, stop portion 90a, wire groove 801, and limiting groove 802 are all disposed in the clamping area between the top platform 350 and the base 10b (upper housing). Even further, the aforementioned end hole group 310 corresponding to the discharge terminal, first guide rail 330, second guide rail 340, stop portion 90a, wire groove 801, and limiting groove 802 are all disposed in the clamping area between the top platform 350 and the base 10b (upper housing).

[0120] Specifically, the connecting portion 300 has a first annular groove 800 formed in the distribution area of ​​the first guide rail 330, the end hole group 310, and the second guide rail 340, and the non-connecting portion 500 has a second annular groove 900 formed in the distribution area of ​​the stop portion 90a, the wire groove 801, and the limiting groove 802. The central axes of the first annular groove 800 and the second annular groove 900 are located in the same plane or are substantially located in the same plane.

[0121] Furthermore, the first annular groove 800 and the second annular groove 900 can be interconnected, and the connection and connection position is isolated by the stop portions 90a on both sides. At the same time, the stop portion 90a on one side corresponds to the lead-out hole of the cable 701, and the stop portion 90a on the other side corresponds to the limiting groove 802 of the interface of the USB connector 702.

[0122] In another possible embodiment, a stop area 90 is provided at the junction of the guide rail area 70 and the data cable placement area 80. The data cable placement area 80 includes a limiting groove 802 for limiting the USB connector 702. The stop area 90 is suitable for limiting the insertion stroke of the power device 100 relative to the battery mounting portion 240 of the foot plate. On the other hand, corresponding to the lead-out hole of the cable 701, one end of the cable 701 is fixedly electrically connected to the circuit board 30 and leads out from the lead-out hole. Furthermore, the stop area 90 is marked with nameplate information for displaying the charging power and / or model of the USB connector (such as Type-C). (45W), a limiting ring 90b is further provided near the stop area 90. The cable 701 passes through the limiting ring and positions the USB connector 702 in the limiting groove 802. When in use, the USB connector 702 can be pulled out and the cable 701 can be pulled. The cable 701 moves along the limiting ring 90b and can be pulled out of the data cable placement area 80 by a certain distance. When not in use, the USB connector 702 is positioned back in the limiting groove 802. The cable 701 forms a winding annular lifting band 1000 between the stop area 90 and the limiting ring 90b. The user can lift the power device 100 through the winding annular lifting band 1000.

[0123] In short, a limiting ring 90b (such as an annular protrusion or through hole) is set near the stop area 90. After the cable 701 passes through the limiting ring 90b, it forms a controllable movement path. When the USB connector 702 is pulled out, the cable 701 is pulled out in a straight line along the limiting ring 90b to avoid tangling. When storing, the USB connector 702 is inserted into the limiting groove 802, and the cable 701 naturally bends between the stop area 90 and the limiting ring 90b to form an annular lifting strap 1000. When the user needs to connect an external USB device (such as charging a mobile phone), the USB connector 702 is pulled out from the limiting groove 802, and the cable 701 is pulled to the required length. After use, the cable 701 is pushed back into the limiting groove 802, and the cable 701 bends. When the data cable is not in use, the bend of the cable 701 forms a flexible annular band between the limiting ring 90b and the stop area 90. The user can lift the power device by pulling this ring, improving portability.

[0124] Specifically, the connecting portion has a first annular groove 800 formed in the distribution area of ​​the first guide rail 330, the end hole group 310, and the second guide rail 340, and a stop area 90 and a limiting ring 90b are disposed in the non-connecting portion 500.

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A battery pack, comprising: Main body shell; At least one set of rechargeable battery units is disposed inside the main body housing; A circuit board is disposed within the main housing and is electrically connected to the rechargeable battery unit; A discharge terminal group, suitable for plugging into a plate-shaped power tool terminal group, is disposed on the circuit board, and includes a positive output terminal, a communication output terminal, and a negative output terminal with a flexible clamping port; Terminal hole group, which is used to expose the discharge terminal group, includes a positive terminal hole, a communication terminal hole and a negative terminal hole corresponding to the discharge terminal group; Its features are, The positive output terminal and the negative output terminal are respectively arranged horizontally on the circuit board, and the insertion plane corresponding to their elastic clamping port is parallel to the plane of the circuit board. The communication output terminal is axially arranged on the circuit board, and the insertion plane corresponding to its elastic clamping port is perpendicular to the plane of the circuit board.

2. The battery pack according to claim 1, characterized in that: The highest points of the positive output terminal and the negative output terminal define a virtual height plane above the circuit board. The height plane is parallel to the plane of the circuit board, and the axial height of the communication output terminal does not exceed the height plane.

3. The battery pack according to claim 1 or 2, characterized in that: Both the positive output terminal and the negative output terminal include elastic clamping arms, and the elastic clamping arms of the positive output terminal and / or the negative output terminal extend outward and protrude from the outer edge of the circuit board to approach the end hole group.

4. The battery pack according to claim 3, characterized in that: It also includes a battery pack frame, on which the circuit board is mounted. The battery pack frame is adapted to limit the installation of the rechargeable battery unit and has a first rib extending axially at the position corresponding to the elastic clamping arm. The inner wall of the main body shell has a second rib extending axially. The first rib and the second rib are located on both sides of the elastic clamping arm to limit and support the axial elastic change of the elastic clamping arm.

5. The battery pack according to claim 3, characterized in that: The positive output terminal, the communication output terminal, and the negative output terminal are arranged sequentially at intervals along the lateral direction of the circuit board, and the lateral span distance between the positive output terminal and the negative output terminal accounts for more than 70% of the lateral width distance of the circuit board.

6. The battery pack according to claim 5, characterized in that: The projected area of ​​the communication output terminal on the circuit board is smaller than the projected area of ​​the positive output terminal or the negative output terminal on the circuit board.

7. The battery pack according to claim 3, characterized in that: The distance between the highest point of the positive output terminal and the negative output terminal and the surface of the circuit board is less than the diameter of the rechargeable battery unit; Among the positive output terminal, communication output terminal, and negative output terminal, the distance between adjacent terminals is less than the width of any single terminal.

8. The battery pack according to claim 1, characterized in that: The main body shell includes a base and a protrusion extending outward from the outer surface of the base. The protrusion includes a top platform and a connecting portion connecting the top platform and the base. The end hole group is disposed on the side of the connecting portion facing the tool.

9. The battery pack according to claim 8, characterized in that: A longitudinally extending guide rail is formed between the top platform and the base, the guide rail including a first guide rail and a second guide rail; The axial height of the first guide rail and the second guide rail defines the first virtual plane P1 and the second virtual plane P2, and the end hole group is located between the first virtual plane P1 and the second virtual plane P2.

10. A battery pack, comprising: Main body shell; At least one set of rechargeable battery units is disposed inside the main body housing; A circuit board is disposed within the main housing and is electrically connected to the rechargeable battery unit; A discharge terminal group, suitable for plugging into a plate-shaped power tool terminal group, is disposed on the circuit board, and includes a positive output terminal, a communication output terminal, and a negative output terminal with a flexible clamping port; Terminal hole group, which is used to expose the discharge terminal group, includes a positive terminal hole, a communication terminal hole and a negative terminal hole corresponding to the discharge terminal group; Its features are: The positive output terminal and the negative output terminal are respectively arranged horizontally on the circuit board, and the insertion plane corresponding to their elastic clamping port is parallel to the plane of the circuit board. The highest points of the positive output terminal and the negative output terminal define a virtual height plane above the circuit board. The height plane is parallel to the plane of the circuit board, and the axial height of the communication output terminal does not exceed the height plane.

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