Battery pack adapter

Abstract

The utility model provides a battery pack adapter. The battery pack adapter comprises a shell, a battery pack interface and a circuit board, an accommodating cavity is formed in the shell, the battery pack interface is arranged on the outer side surface of the shell, and the battery pack interface comprises an electrode holder; the circuit board is arranged in the accommodating cavity and electrically connected with the electrode holder, the circuit board comprises a substrate and a component arranged on the substrate, and the substrate comprises a first side surface and a second side surface which are opposite to each other; a supporting structure is arranged on the inner wall of the shell, and the circuit board is arranged on the supporting structure and supported and positioned by the supporting structure. The circuit board divides the containing cavity into a first cavity and a second cavity, the first cavity is at least defined by the first side surface and the inner wall of the shell, and the second cavity is at least defined by the second side surface and the inner wall of the shell. Therefore, the shell is prevented from scalding hands.

Description

Technical Field

[0001] The utility model belongs to the technical field of power adapters, and particularly relates to a battery pack adapter. Background Art

[0002] A battery pack adapter is used to transfer a battery pack and an external power supply or device, so as to achieve charging of the battery pack or charging an external device with the electric energy of the battery pack. The circuit board of the battery pack adapter is the main heat generating component, and the heat of the circuit board conducted to the housing will cause the housing to become hot and scalding.

[0003] Therefore, it is necessary to improve the existing technology to overcome the defects in the existing technology. Summary of the Utility Model

[0004] Therefore, what the utility model mainly solves is the technical problem that the housing of the battery pack adapter in the existing technology is scalding.

[0005] To solve the above technical problem, the utility model provides a battery pack adapter, including:

[0006] A housing, with a receiving cavity formed inside;

[0007] A battery pack interface, arranged on the outer side surface of the housing, for attaching a battery pack, and the battery pack interface includes an electrode seat;

[0008] A circuit board, arranged in the receiving cavity and electrically connected to the electrode seat. The circuit board includes a substrate and components arranged on the substrate. The substrate includes a first side surface and a second side surface facing away from each other;

[0009] A support structure is arranged on the inner wall of the housing, and the circuit board is arranged on the support structure and supported and positioned by the support structure; the circuit board divides the receiving cavity into a first cavity and a second cavity. The first cavity is at least formed by enclosing the first side surface and the inner wall of the housing, and the second cavity is at least formed by enclosing the second side surface and the inner wall of the housing.

[0010] In one embodiment, the housing further includes a socket for inserting an external connector, the socket communicates with the first cavity, and the battery pack adapter further includes a dust-proof member for closing the socket. When the dust-proof member closes the socket, at least the first cavity is closed relative to the outside.

[0011] In one embodiment, the distance between the first cavity and the battery pack interface is greater than the distance between the second cavity and the battery pack interface, and the electrode seat substantially closes the second cavity.

[0012] In one embodiment, the volume of the first cavity is greater than that of the second cavity, and the components are all disposed on the first side surface of the substrate.

[0013] In one embodiment, taking the direction perpendicular to the second side surface as the thickness direction of the second cavity, more than 80% of the area of the second cavity has a uniform thickness.

[0014] In one embodiment, the battery pack adapter further includes a wire received in the second cavity. The first end of the wire is connected to the circuit board, and the second end of the wire is connected to the electrode base. The first end and the second end are respectively located at both ends of the second cavity.

[0015] In one embodiment, the support structure is disposed around the inner wall of the housing. The support structure includes a first rib and a second rib spaced apart in the thickness direction of the substrate. A groove is formed between the first rib and the second rib for plugging and mating with the outer edge of the substrate.

[0016] In one embodiment, in the circumferential direction of the substrate, the first rib and / or the second rib are intermittently arranged.

[0017] In one embodiment, the support structure further includes a spacer rib disposed on the inner wall of the housing. The spacer rib protrudes from the inner wall of the housing. The spacer rib abuts against the outer edge of the substrate, and a heat insulation gap is formed between the outer edge of the substrate and the inner wall of the housing.

[0018] In one embodiment, the housing includes a main body portion and a protruding portion connected to the main body portion. The protruding portion protrudes from the top wall of the main body portion. The top wall surrounds the protruding portion. The first cavity partially extends into the protruding portion, and the components higher than the top wall extend into the protruding portion.

[0019] The technical solution provided by the present utility model has the following advantages:

[0020] For the battery pack adapter provided by the present utility model, the circuit board is supported and positioned in the middle of the receiving cavity through the support structure, so that the outer sides of the two opposite side surfaces of the substrate are both cavity structures, and the distance between the circuit board and the housing is relatively large, preventing the heat of the circuit board from directly conducting to the housing and causing the housing to be hot to the touch. Description of the Drawings

[0021] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 Schematic perspective view of the battery pack adapter provided by the embodiment of the present utility model;

[0023] Figure 2 Schematic partial exploded view of the battery pack adapter provided by the embodiment of the present utility model;

[0024] Figure 3 Schematic side view of the battery pack adapter provided by the embodiment of the present utility model with the first half shell hidden;

[0025] Figure 4 Schematic perspective view of the first half shell of the battery pack adapter provided by the embodiment of the present utility model. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions of the present utility model in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present utility model, rather than all embodiments. The present utility model will be described in detail below with reference to the drawings and in conjunction with the embodiments. It should be noted that, without conflict, the embodiments and features in the embodiments of the present utility model can be combined with each other.

[0027] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence.

[0028] In the present utility model, unless otherwise stated, the orientation terms such as "upper", "lower", "top", "bottom" are usually in the direction shown in the drawings, or in the vertical, perpendicular or gravitational direction of the component itself; similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms do not limit the present utility model.

[0029] This embodiment provides a battery pack adapter. Figure 1 Schematic perspective view of the battery pack adapter provided by the embodiment of the present utility model, Figure 2 Schematic view of the partial exploded structure of the battery pack adapter provided by the embodiment of the present utility model, Figure 3The side view structural schematic diagram of the battery pack adapter hiding the first half shell provided by the embodiment of the present utility model. Please refer to Figure 1 , Figure 2 and Figure 3 , the battery pack adapter includes a housing 10, a battery pack interface 20 and a circuit board 30.

[0030] The housing 10 is the outer shell of the battery pack adapter, which is used to support and position the functional components of the battery pack adapter. A receiving cavity 12 is formed inside the housing 10, and the functional components are arranged in the receiving cavity 12. The battery pack interface 20 is arranged on the outer side surface of the housing 10 and is used for attaching to a battery pack (not shown). Among them, the battery pack interface 20 includes an electrode seat 22, and the electrode seat 22 has a docking terminal that cooperates with the battery pack terminal, and the docking terminal is electrically connected to the circuit board 30. After the battery pack is docked with the electrode seat 22, it is electrically connected to the circuit board 30 through the docking terminal, and the battery pack can be charged or discharged outward using the battery pack.

[0031] Specifically, please refer to Figure 1 and Figure 3 shown, the battery pack interface 20 further includes a slide rail 24, and the slide rail 24 is used for sliding cooperation with the battery pack to guide the battery pack to be inserted into the electrode seat 22. In a specific implementation, there are two slide rails 24, and the two slide rails 24 are arranged opposite to each other and parallel. The electrode seat 22 is arranged at the ends of the two slide rails 24, and one end of the battery pack interface 20 relative to the electrode seat 22 is an open end 21 for the battery pack to be inserted. The battery pack is docked and cooperated with the two slide rails 24 through the open end 21. When attaching the battery pack, align the slide rail with the chute on the battery pack, and apply a thrust along the extending direction of the slide rail 24 to make the battery pack slide along the slide rail 24 until it is inserted into the electrode seat 22, realizing the attachment of the battery pack and the battery pack interface 20.

[0032] The circuit board 30 is the electric control component of the battery pack adapter and is used to control the charging and / or discharging of the battery pack adapter. The circuit board 30 is arranged in the receiving cavity 12 and is electrically connected to the electrode seat 22. Specifically, please refer to Figure 3 emphatically, the circuit board 30 includes a substrate 31 and components 32 arranged on the substrate. The substrate 31 is integrally in a flat plate shape and includes a first side surface 311 and a second side surface 313 that face away from each other. A support structure 13 is arranged on the inner wall of the housing 10, and the circuit board 30 is arranged on the support structure 13 and is supported and positioned by the support structure 13.

[0033] After the circuit board 30 is supported and fixed by the support structure 13, the circuit board 30 is located in the middle area of the receiving cavity 12, and the circuit board 30 divides the receiving cavity 12 into a first cavity 121 and a second cavity 123. Among them, the first cavity 121 is at least formed by enclosing the first side surface 311 and the inner wall of the housing 10, and the second cavity 123 is at least formed by enclosing the second side surface 313 and the inner wall of the housing 10. That is to say, cavities are provided outside both the first side surface 311 and the second side surface 313 of the substrate 31.

[0034] For the battery pack adapter provided in this embodiment, the circuit board is supported and positioned in the middle area of the receiving cavity through the support structure, so that cavities are provided outside the opposite side surfaces of the substrate. There is a relatively large gap between the circuit board and the housing, preventing the heat of the circuit board from directly conducting to the housing and causing the housing to be scalding hot.

[0035] In a specific embodiment, please refer to Figure 2 As shown, the housing 10 includes a main body portion and a protruding portion connected to the main body portion. The protruding portion protrudes from the top wall of the main body portion, and the top wall surrounds the protruding portion. The battery pack interface 20 is provided on the bottom side of the main body portion opposite to the protruding portion. A main cavity is formed in the main body portion, and an extended cavity is formed in the protruding portion. The extended cavity communicates with the main cavity. A part of the first cavity 121 extends into the protruding portion, and the components higher than the top wall extend into the protruding portion. The setting of the extended cavity increases the height of the first cavity, facilitating the provision of sufficient accommodation space for components.

[0036] Specifically, the main body portion includes a first half-shell 15 and a second half-shell 16. The first half-shell 15 and the second half-shell 16 are joined along the width direction of the housing 10 to form the main cavity. After the first half-shell 15 and the second half-shell 16 are joined, an opening is formed at the top. The protruding portion includes an upper cover 17, and the extended cavity is formed in the upper cover 17. The upper cover 17 is disposed at the opening, clamped between the first half-shell 15 and the second half-shell 16, and fixed by the joining of the first half-shell 15 and the second half-shell 16.

[0037] The circuit board 30 is disposed in the main cavity. The first cavity 121 includes the extended cavity and a part of the main cavity communicating with the extended cavity, and the second cavity 123 is formed by another part of the cavity of the main cavity.

[0038] Figure 4 It is a schematic three-dimensional structure diagram of the first half-shell of the battery pack adapter provided in an embodiment. The structures of the first half-shell 15 and the second half-shell 16 are substantially the same and are substantially symmetric about the joining surface. Notches are provided in the middle areas of the joining of the first half-shell 15 and the second half-shell 16. After the first half-shell 15 and the second half-shell 16 are joined, the two notches are joined to form the above-mentioned opening. In this way, the upper cover is clamped and positioned at the joining of the two half-shells. After the two half-shells are fixed, the fixing of the upper cover can be realized, facilitating assembly and molding.

[0039] Specifically, please continue to refer to Figure 2 , the upper cover 17 includes a first positioning portion 171 and a second positioning portion 172 provided at the outer edge of the side wall. Among them, the first positioning portion 171 is located at both ends in the length direction of the upper cover 17, and is provided at the butting portion of the first half shell 15 and the second half shell 16. The first positioning portion 171 cooperates with both the first half shell 15 and the second half shell 16. The second positioning portion 172 is located on both sides in the width direction of the upper cover 17. One side of the second positioning portion 172 cooperates with the first half shell 15, and the other side of the second positioning portion 172 cooperates with the second half shell 16.

[0040] In a specific embodiment, the first positioning portion 171 is configured as a rib, and a limiting groove 153 is provided corresponding to the butting joint of the first half shell 15 and the second half shell 16. The first positioning portion 171 is embedded in the limiting groove 153. The second positioning portion 172 is configured as a boss, and support platforms are provided on the corresponding wall surfaces of the first half shell 15 and the second half shell 16. Among them, the first half shell 15 is provided with a support platform 151, and the support platform of the second half shell 16 is the same as that of the first half shell 15. Taking the connection structure between the second positioning portion 171 and the first half shell 15 as an example for description, the corresponding structures of the second half shell 16 can be referred to each other and will not be elaborated here. Specifically, the second positioning portion 172 is adapted to be inserted into the support platform 151, and the support platform 151 plays a role in supporting and positioning the second positioning portion 172.

[0041] Preferably, the number of the first positioning portions 171 is two, which are respectively provided at both ends in the length direction of the upper cover 17. The number of the second positioning portions 172 is multiple, and they are basically evenly spaced on both sides of the width of the upper cover 17.

[0042] As described above, the circuit board 30 is supported and fixed by a support structure. In specific implementation, the support structure of the circuit board 30 includes various feasible implementation schemes. It can be formed by a partial structure of the housing, or corresponding components connected to the housing, as long as the positioning of the circuit board relative to the housing can be achieved, which is not limited here. Several implementation manners of the support structure are specifically illustrated below.

[0043] Embodiment 1: The support structure 13 is formed by the inner wall ribs of the housing 10. The support structures of the first half shell 15 and the second half shell 16 are basically the same. Taking the first half shell 15 as an example for description. Please refer to Figure 4As shown, the support structure 13 is disposed around the inner wall of the housing 10. The support structure 13 includes a first rib 131 and a second rib 133 spaced apart in the thickness direction of the substrate 31. A groove 130 is formed between the first rib 131 and the second rib 133 for plugging and mating with the outer edge of the substrate 31. After the substrate 31 is inserted into the groove 130, the first rib 131 is in limiting cooperation with the first side surface 311, and the second rib 133 is in limiting cooperation with the second side surface 313. The first rib 131 and the second rib 133 form limiting resistance on both sides of the substrate 130, so that the substrate 31 can be held in a fixed position, realizing the support and positioning of the circuit board 30.

[0044] Preferably, one or both of the first rib 131 and the second rib 133 are intermittently provided in the circumferential direction of the substrate 31. Exemplarily, the first rib 131 is intermittently provided, and an interval is formed between two adjacent segments of the first rib 131. The interval between the first ribs 131 reduces the contact surface of the substrate 31 with the first rib, which can improve the heat insulation effect of the circuit board. In another example, both the first rib 131 and the second rib 133 are intermittently provided, and the intermittent lengths at least have an overlapping part in the circumferential direction. For example, the intermittent lengths of the first rib 131 and the second rib 133 are the same and are arranged opposite to each other. Another example is that the intermittent length of the first rib 131 at the corresponding position is greater than the intermittent length of the second rib 133. The number, position, and length of the intermittence of the first rib 131 and the second rib 133 are not limited herein.

[0045] Embodiment 2: The support structure may also employ a fixing member independent of the housing 10 to fix the circuit board 30 to the housing 10, thereby positioning the circuit board 30 in the middle of the receiving cavity 12. Specifically, the fixing member may be a screw.

[0046] To further improve the heat insulation of the circuit board, in one embodiment, please refer to Figure 4 , the support structure further includes a spacer rib 155 disposed on the inner wall of the housing 10. The spacer rib 155 is used to abut against the outer edge of the substrate 31, thereby forming a gap between the substrate 31 and the inner wall of the housing 10. The non - continuous contact between the substrate 31 and the inner wall of the housing 10 in the circumferential direction improves the heat insulation effect of the substrate 31. In a specific embodiment, the spacer rib 155 protrudes from the inner wall of the housing 10, is disposed between the first rib 131 and the second rib 133, and is located at the bottom of the groove 130. The spacer rib 155 abuts against the outer edge of the substrate 31, restricting the depth of insertion of the substrate 31 into the groove 130, so that a heat insulation gap is formed between the outer edge of the substrate 31 and the inner wall of the housing 10, further improving the heat insulation effect of the circuit board. In other embodiments, the spacer rib 155 may also be independent of the first rib 131 and / or the second rib 133, for example, disposed at the intermittent positions of the first rib 131 and / or the second rib 133.

[0047] For the convenience of connecting the battery pack adapter to an external power source or an electrical device, in a specific embodiment, please refer to Figure 3 , the housing 10 further includes a socket 14 for inserting an external connector. Specifically, the socket 14 communicates with the first cavity 121, and the battery pack adapter can be electrically connected to an external power source or an electrical device through the socket 14, thereby improving the flexibility of use of the battery pack adapter.

[0048] However, in some implementation scenarios, the battery pack adapter is used to charge the battery pack of a power tool, so it is often in a construction site environment, and the dust in the construction site environment is likely to contaminate the battery pack adapter. Especially the setting of the socket 14 increases the risk of dust entering the interior of the housing 10. In order to improve the dust-proof effect of the battery pack adapter, in a specific embodiment, the battery pack adapter further includes a dust-proof member 40 for closing the socket 14. When the dust-proof member 40 closes the socket 14, the first cavity 121 communicating with the socket 14 is closed relative to the outside world. In this way, dust is not easily introduced into the first cavity, the risk of component contamination is reduced, and at the same time, the electrical connection between the battery pack adapter and the external connector is also taken into account.

[0049] Specifically, the component 32 includes an electrical interface 321 for plugging into an external connector, and the electrical interface 321 is located in the first cavity 121 and is opposite to the socket 14. When it is necessary to plug in an external connector, the dust-proof member 40 is opened to expose the socket 14, and the external connector is plugged into the electrical interface 321 through the socket 14.

[0050] In a specific embodiment, please continue to refer to Figure 3 , the distance between the first cavity 121 and the battery pack interface 20 is greater than the distance between the second cavity 123 and the battery pack interface 20. That is to say, the second cavity 123 is located on the side of the substrate 31 close to the battery pack interface 20, and the first cavity 121 is located on the side of the substrate 31 away from the battery pack interface 20. The electrode seat 22 forms a part of the side wall of the second cavity 123. In order to reduce the risk of dust entering the housing 10 from the second cavity 123, the electrode seat 22 is arranged to substantially enclose the second cavity 123. Herein, the electrode seat 22 enclosing the second cavity 123 is understood to mean that the electrode seat 22 forms a part of the inner wall of the second cavity 123, and the electrode seat 22 substantially closes the opening of the second cavity 123, but it does not exclude that there are some gaps in the opening of the second cavity 123. After the battery pack is installed, the gaps are blocked by the battery pack. In this way, the second cavity is also relatively closed, and dust is not easily introduced into the second cavity, and the dust-proof effect is good. When the socket is in the state closed by the dust-proof member, the receiving cavity of the entire housing is fully enclosed, improving the overall dust-proof effect of the battery pack adapter.

[0051] In the above embodiment, the receiving cavity of the battery pack adapter is substantially fully enclosed, and the circuit board is disposed in the middle of the receiving cavity, which not only achieves dust-proof but also ensures the heat insulation effect of the circuit board.

[0052] Since the battery pack is plugged into the battery pack interface 20 and the circuit board 30 is in a working state, the heat generated by the components is relatively large, which is the main reason for the increase in heat. However, since the battery pack itself also generates heat, in order to suppress the mutual influence of the heat generated by the battery pack and the components and reduce the temperature rise of the components, in a specific embodiment, the volume of the first cavity 121 is larger than the volume of the second cavity 123, and the components 32 are all arranged on the first side surface 131 of the substrate 31. The components 32 are arranged relatively far away from the battery pack interface 20, which can reduce the influence of the heat generated by the battery pack on the components 32.

[0053] Since the second cavity is close to the battery pack interface, in order to balance the heat distribution and suppress the non-uniformity of the heat exchange between the battery pack and the circuit board. In an embodiment, taking the direction perpendicular to the second side surface 313 as the thickness direction of the second cavity 123, the thickness of more than 80% of the area of the second cavity is uniform. The advantage of such a setting is that the intervals of more than 80% of the range between the battery pack and the circuit board are the same, which can suppress the non-uniformity of heat transfer in each area caused by the non-uniform thickness of the second cavity and ensure the regional balance of the temperature of the circuit board.

[0054] In a specific embodiment, please refer to Figure 3 As shown, the battery pack adapter further includes a wire (not shown) received in the second cavity 123, and the wire is used for electrically connecting the circuit board and the electrode seat 22. Specifically, the wire has opposite ends, the first end of the wire is connected to the circuit board 30, the second end of the wire is connected to the electrode seat 22, and the first end and the second end are respectively located at both ends of the second cavity 123. That is to say, the wire penetrates through the second cavity and is mostly received in the second cavity. Therefore, the second cavity also realizes the function of laying and receiving the wire, and the battery pack adapter does not need to be provided with an additional wiring structure, and the overall body is compact and the layout is reasonable.

[0055] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art can make other different forms of changes or modifications without making creative efforts, and all of them should fall within the protection scope of the present invention.

Claims

1. A battery pack adapter, characterized in that, Comprising: A housing with a receiving cavity formed inside; A battery pack interface provided on an outer side surface of the housing for attaching a battery pack, and the battery pack interface includes an electrode base; A circuit board disposed in the receiving cavity and electrically connected to the electrode base. The circuit board includes a substrate and components disposed on the substrate. The substrate includes opposite first and second side surfaces; A support structure is provided on an inner wall of the housing, and the circuit board is disposed on the support structure and supported and positioned by the support structure; the circuit board divides the receiving cavity into a first cavity and a second cavity. The first cavity is at least formed by enclosing of the first side surface and the inner wall of the housing, and the second cavity is at least formed by enclosing of the second side surface and the inner wall of the housing.

2. The battery pack adapter according to claim 1, wherein, The housing further includes a socket for inserting an external connector. The socket communicates with the first cavity. The battery pack adapter further includes a dust-proof member for closing the socket. When the dust-proof member closes the socket, at least the first cavity is closed relative to the outside.

3. The battery pack adapter according to claim 2, wherein, The distance between the first cavity and the battery pack interface is greater than the distance between the second cavity and the battery pack interface, and the electrode base substantially closes the second cavity.

4. The battery pack adapter according to claim 1, characterized in that, The volume of the first cavity is greater than the volume of the second cavity, and all the components are disposed on the first side surface of the substrate.

5. The battery pack adapter according to claim 1, characterized in that, Taking the direction perpendicular to the second side surface as the thickness direction of the second cavity, more than 80% of the area of the second cavity has a uniform thickness.

6. The battery pack adapter according to claim 5, characterized in that The battery pack adapter further includes a wire received in the second cavity. A first end of the wire is connected to the circuit board, and a second end of the wire is connected to the electrode base. The first end and the second end are respectively located at two ends of the second cavity.

7. The battery pack adapter according to claim 1, characterized in that, The support structure is disposed around the inner wall of the housing. The support structure includes a first rib and a second rib spaced apart in the thickness direction of the substrate. A groove for inserting and mating with an outer edge of the substrate is formed between the first rib and the second rib.

8. The battery pack adapter according to claim 7, characterized in that, In the circumferential direction of the substrate, the first rib and / or the second rib are intermittently provided.

9. The battery pack adapter according to claim 1, characterized in that, The support structure further includes a spacer rib provided on the inner wall of the housing. The spacer rib protrudes from the inner wall of the housing. The spacer rib abuts against an outer edge of the substrate, and a heat insulation gap is formed between the outer edge of the substrate and the inner wall of the housing.

10. The battery pack adapter according to claim 1, characterized in that, The housing includes a main body portion and a protruding portion connected to the main body portion. The protruding portion protrudes from a top wall of the main body portion. The top wall surrounds the protruding portion. The first cavity partially extends into the protruding portion, and components higher than the top wall extend into the protruding portion.

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