A battery pack arrangement

Abstract

The utility model relates to a kind of battery package device, battery package device includes battery shell, battery unit and control panel unit, the battery unit and the control panel unit are electrically connected, the battery shell is annular shell structure, the surrounding area of the battery shell is formed with the center hole of axial penetration, the battery shell includes joint hole, at least two contact holes and the installation cavity of annular closed space shape.The battery unit and control panel unit are located in the installation cavity, the control panel unit is integrated with joint piece and the conductive contact matching with the contact hole, at least part of the conductive contact is exposed to the battery shell by corresponding contact hole, the joint piece is assembled with the joint hole.Battery package device uses independent packaging, carries out electric energy management by control panel unit and carries out external power supply by conductive contact, so as to realize the replaceable structure of battery package device, reduce use cost.

Description

Technical Field

[0001] This utility model relates to the field of energy storage technology, and in particular to a battery pack device. Background Technology

[0002] The battery pack device serves as the energy storage component of an electric tool, enabling its movement and use. The battery pack device can be adapted to the structure of the electric tool for encapsulation and conductive output. For example, publication number CN120501258A provides an electronic hookah with a fixed battery pack assembly inside, used to power the electronic hookah.

[0003] However, battery pack devices have limited energy storage capacity, and their energy storage efficiency decreases with prolonged use, resulting in a poor user experience. This is especially true for small power tools like e-hair pipes that require continuous operation. The fixed battery pack assembly is directly connected to the power source via wires. Once the stored energy is depleted, the power tool must be stopped and recharged. Currently, customers can only replace the power tool, requiring multiple backups and increasing costs. Furthermore, once the battery pack's energy storage capacity declines, the tool may need to be completely or partially scrapped, significantly increasing operating costs. Therefore, improvements are needed. Utility Model Content

[0004] To overcome the problems existing in related technologies, this utility model provides a battery pack device to solve the technical problem that the battery pack components cannot be replaced and the user experience is poor.

[0005] According to a first aspect of the present invention, a battery pack device is provided. The battery pack device includes a battery shell, a battery unit, and a control board unit. The battery unit and the control board unit are electrically connected. The battery shell has an annular shell structure. An axially penetrating central hole is formed in the surrounding area of ​​the battery shell. The battery shell includes a connector hole, at least two contact holes, and an annular closed space mounting cavity. Both the battery unit and the control board unit are located within the mounting cavity. The control board unit integrates a connector and conductive contacts that match the contact holes. At least a portion of the conductive contacts are exposed through the corresponding contact holes in the battery casing. The connector is adapted to the connector holes for assembly.

[0006] In one embodiment, the contact hole is formed at the end of the battery case, and the connector hole is formed on the side wall of the battery case.

[0007] In one embodiment, three contact holes are provided, and the conductive contacts include a positive contact, a negative contact, and a protective contact. The positive contact and the negative contact are distributed on both sides of the central hole.

[0008] In one embodiment, the battery housing includes a bottom shell and a top cover. The bottom shell includes a bottom wall, a central tube protruding from the bottom wall, and an outer peripheral wall. The outer peripheral wall surrounds the central tube to form an open receiving space. The battery cell is installed inside the bottom shell and surrounds the central tube. The control board unit is mounted on the top cover, and the control board unit and the battery unit are connected by wires. The top cover closes the opening of the accommodating space.

[0009] In one embodiment, the bottom shell and the top cover are connected by ultrasonic welding; or, the bottom shell and the top cover are connected by adhesive bonding.

[0010] In one embodiment, the battery unit includes a power supply board, a conductive sheet, a battery positioning element, and multiple power supply batteries. The multiple power supply batteries surround the central tube. The battery positioning element is arranged in two sets and positions the two ends of the power supply batteries respectively. The power supply board is located on one side of the power supply batteries. The power supply board and the conductive sheet respectively connect the multiple power supply batteries in series. The power supply board and the control board unit are electrically connected.

[0011] In one embodiment, the bottom shell is provided with at least one set of positioning ribs, and the positioning ribs and the outer side wall of the battery positioning member form complementary positioning.

[0012] In one embodiment, a filling medium is used to fill the space between the control board unit and the battery unit.

[0013] In one embodiment, the control board unit is provided with at least one indicator light, and the battery casing is provided with a display hole corresponding to the indicator light.

[0014] In one embodiment, the outer peripheral wall of the battery casing is provided with a guide portion, which is configured as at least one guide groove and / or guide rib extending axially.

[0015] The technical solution provided by the embodiments of this utility model can include the following beneficial effects: the battery pack device is independently packaged, and power management is performed through a control board unit and external power is supplied through conductive contacts, thereby realizing a replaceable structure for the battery pack device and reducing usage costs. The battery casing has a through-hole in the center to accommodate the functional tubes of the power tool, and the outer peripheral wall of the battery casing is adapted to the tube wall of the power tool, thus forming an assembly and mating structure. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0017] Figure 1This is a schematic diagram of the structure of a battery pack device according to one embodiment.

[0018] Figure 2 This is a cross-sectional structural schematic diagram of a battery pack device according to an embodiment.

[0019] Figure 3 This is a schematic diagram of the end face of a battery pack device according to one embodiment.

[0020] Figure 4 This is a schematic cross-sectional view of a battery pack device according to one embodiment.

[0021] Figure 5 This is an exploded schematic diagram of a battery pack assembly according to one embodiment.

[0022] Figure 6 This is a schematic diagram illustrating a battery positioning component according to one embodiment.

[0023] Figure 7 This is a schematic diagram of the bottom shell according to one embodiment.

[0024] In the figure, the components are: battery casing 10; top cover 11; mounting rib 111; mounting notch 112; bottom shell 12; center tube 121; outer peripheral wall 122; bottom wall 123; positioning rib 124; adapter notch 125; contact hole 13; center hole 14; connector hole 15; display hole 16; guide part 17; guide groove 171; control board unit 20; conductive contact 21; positive contact 211; negative contact 212; protection contact 213; connector 22; indicator light 23; battery unit 30; battery positioning part 31; positioning notch 311; positioning boss 312; bottom plate 313; power supply battery 32; power supply board 33; conductive sheet 34. Detailed Implementation

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] like Figures 1 to 3As shown, this utility model provides a battery pack device, which includes a battery housing 10, a battery unit 30, and a control board unit 20. The battery unit 30 and the control board unit 20 are electrically connected. The battery housing 10 has an annular shell structure, with an axially penetrating central hole 14 formed around its annular surrounding area. This hole can be used for equipment wiring, fixed shaft installation, etc., significantly improving space utilization. When the battery pack device is applied to an electronic hookah, the central hole 14 can pass through the flue. The battery housing 10 has an annular closed mounting cavity, in which the battery unit 30 and the control board unit 20 are housed, achieving centralized storage and protection of internal components.

[0027] The battery housing 10 includes a connector hole 15, at least two contact holes 13, and a mounting cavity in the shape of an annular closed space. The battery unit 30 and the control board unit 20 are both located in the mounting cavity. The control board unit 20 integrates a connector 22 and conductive contacts 21 that match the contact holes 13. At least some of the conductive contacts 21 are exposed outside the battery housing 10 through the corresponding contact holes 13. The connector 22 is assembled to match the connector hole 15.

[0028] The connector 22 is adapted to be inserted into the connector hole 15, with the interface portion of the connector 22 facing outwards for easy connection to external charging and discharging devices. Optionally, the connector 22 is used to connect a power cord to form a charging connector. Furthermore, the connector 22, when used to connect a power cord, can achieve reverse output and can serve as a power interface to output electrical energy. For example, the battery pack device can charge mobile devices such as mobile phones.

[0029] The conductive contacts 21 are matched one-to-one with the contact holes 13, with some contacts exposed on the outer wall of the battery housing 10. This allows the battery pack to be electrically connected to the contact portion of an external power tool via the conductive contacts 21, enabling a detachable connection of the battery pack. The contact holes 13 can be flexibly opened at the end or side wall of the battery housing 10 to meet the contact docking requirements of different devices.

[0030] Therefore, the battery pack device is independently packaged, and power management is performed through the control board unit 20 and external power is supplied through the conductive contacts 21, thereby realizing a replaceable structure for the battery pack device and reducing the cost of use.

[0031] The contact hole 13 has a flexible location; it can be located at the end of the battery housing 10 or on the side wall of the battery housing 10. Correspondingly, the housing portion of the power tool is provided with elastic contacts adapted to the contact hole 13 for conductive contact. Preferably, the battery pack device is applied to an electronic hookah, wherein the battery pack device passes through the smoke duct, and the contact hole 13 is located at the end of the battery housing 10, forming a coaxial abutment connection with good conductive contact. The connector hole 15 is located on the side wall of the battery housing 10 for easy insertion and removal of the charging cable.

[0032] Preferably, the contact hole 13 has three contacts, and the conductive contacts 21 include a positive contact 211, a negative contact 212, and a protective contact 213. The positive contact 211 and the negative contact 212 are distributed on both sides of the central hole 14. The positive contact 211 and the negative contact 212 are symmetrically distributed about the axis of the central hole 14, or the positive contact 211 and the negative contact 212 are located on both sides of the central hole 14 and are spaced apart radially along the battery casing 10. This arrangement not only makes the current transmission more stable but also increases the distance between the positive contact 211 and the negative contact 212, improving the electrical contact effect.

[0033] The positive contact 211, negative contact 212 and protection contact 213 are arranged in a triangular pattern. When abnormal conditions such as overcharging, over-discharging and overcurrent occur, the protection contact 213 will trigger the protection mechanism in time to ensure the safety of battery use.

[0034] The battery case 10 is a cavity structure that can accommodate the control board unit 20 and the battery unit 30. The bottom shell 12 and the top cover 11 are assembled and connected to form the battery case 10. The two can be connected in a detachable or non-detachable manner to form an integral structure.

[0035] The bottom shell 12 includes a bottom wall 123, a central tube 121 protruding from the bottom wall 123, and an outer peripheral wall 122. The outer peripheral wall 122 surrounds the central tube 121 to form an open receiving space. The central tube 121 and the outer peripheral wall 122 are approximately concentric circles. The receiving space is annular. The bottom of the receiving space is closed, and the top is an open opening. The battery unit 30 and the control board unit 20 can be assembled from the opening.

[0036] The battery unit 30 is inserted into the receiving space along the central tube 121, and the battery unit 30 surrounds the central tube 121 to improve the receiving effect. Optionally, the battery unit 30 includes multiple power supply batteries 32, which are arranged around the central tube 121. Optionally, the battery unit 30 includes annular cells, which are fitted into the receiving space along the central tube 121.

[0037] The control board unit 20 is detachably mounted to the top cover 11 via fasteners. Optionally, the top cover 11 has multiple mounting posts. The control board unit 20 includes an annular circuit board, the diameter of which is larger than the diameter of the central tube 121. Fasteners pass through the circuit board and are locked to the mounting posts to form a detachable connection. Simultaneously, the conductive contacts 21 of the control board unit 20 are aligned with the contact holes 13 on the top cover 11, achieving high assembly alignment accuracy. More preferably, the connector 22 is located on the top of the circuit board and protrudes to one side. The top cover 11 has a mounting notch 112 on its side, and the connector 22 extends to the mounting notch 112. Correspondingly, the top of the outer peripheral wall 122 has a mating notch 125, which closes with the mounting notch 112 to form a connector hole 15.

[0038] The control board unit 20 and the battery unit 30 are installed independently, and the control board unit 20 and the battery unit 30 are connected by wires to improve the ease of assembly.

[0039] The top cover 11 closes the opening of the receiving space to form a closed space. Preferably, the top cover 11 is provided with an annular protruding mounting rib 111, which is inserted into the bottom shell 12. The outer peripheral wall 122 of the top cover 11 is flush with the outer peripheral wall 122 of the bottom shell 12 to improve the assembly connection accuracy and tightness.

[0040] Furthermore, the connection between the bottom shell 12 and the top cover 11 is made by ultrasonic welding, which improves the bonding strength and ensures good sealing of the welded part.

[0041] Optionally, the bottom shell 12 and the top cover 11 are bonded together with an adhesive to ensure that the joint between the two is seamless, has good sealing performance, and is easy to assemble.

[0042] like Figures 4 to 6 As shown, the battery unit 30 is disposed within the receiving space. The battery unit 30 includes a power supply board 33, conductive sheets 34, battery positioning members 31, and multiple power supply batteries 32. The battery positioning members 31 position the two ends of the power supply batteries 32 to prevent shaking and vibration, reducing the risk of poor contact at conductive contact points such as the power supply batteries 32, power supply board 33, and conductive sheets 34. Preferably, the battery positioning member 31 includes a base plate 313 and multiple protruding positioning bosses 312. The multiple positioning bosses 312 and the base plate 313 form four or more positioning grooves, and the ends of the power supply batteries 32 are confined within these positioning grooves. Two sets of battery positioning members 31 are provided and respectively position the two ends of the power supply batteries 32, ensuring stable installation.

[0043] The power supply board 33 is located on one side of the power supply battery 32, and its length is the same as that of the power supply battery 32. Both ends of the power supply board 33 are connected to conductive sheets 34, which in turn are connected to the power supply battery 32. Multiple power supply batteries 32 are connected in series via the power supply board 33 and conductive sheets 34. The power supply board 33 is electrically connected to the control board unit 20, enabling stable power transmission.

[0044] Furthermore, the bottom shell 12 is provided with at least one set of positioning ribs 124, which complement the outer wall of the battery positioning member 31 for positioning. Specifically, the positioning ribs 124 protrude from the surface of the bottom wall 123, and intersect with the outer peripheral wall 122 to form a local reinforcement structure. Preferably, the positioning ribs 124 are triangular or arc-shaped, and the battery positioning member 31 is provided with a concave positioning notch 32 on its side. The positioning notch 32 and the positioning ribs 124 complement each other to define the installation position.

[0045] The control board unit 20 and the battery unit 30 are respectively assembled axially along the central tube 121. Preferably, the space between the control board unit 20 and the battery unit 30 is filled with a filling medium. The filling medium can be thermally conductive insulating adhesive, epoxy resin potting compound, or flexible insulating pad. Optionally, the filling medium is selected as thermally conductive insulating adhesive or epoxy resin potting compound, which can completely cover the side of the control board unit 20 facing the battery unit 30. This not only provides insulation to prevent short circuits but also quickly conducts away the heat generated by the control board unit 20 and the battery unit 30 during operation, improving heat dissipation. Optionally, the filling medium is selected as flexible insulating pad, which fills part of the gap between the control board unit 20 and the battery unit 30. This can act as a buffer, reducing the impact of vibration on the control board unit 20 and the battery unit 30, while also providing insulation protection.

[0046] The control board unit 20 is equipped with at least one indicator light 23, and the battery housing 10 is equipped with display holes 16 corresponding to the indicator lights 23. The indicator lights 23 can emit light of different colors or flashing frequencies according to the working status of the battery pack device. For example, the battery pack device is in a charging state, discharging state, fully charged, low-charged, or faulty state, etc. The top cover 11 or side wall of the battery housing 10 is equipped with display holes 16 corresponding to the indicator lights 23. Furthermore, a transparent seal is installed inside the display hole 16, which not only does not affect the light transmission of the indicator lights 23, but also prevents external dust and moisture from entering the battery housing 10 through the display hole 16. Users can intuitively understand the working status of the battery pack device through the display hole 16.

[0047] like Figure 1 and Figure 7 As shown, a battery pack assembly is installed on a power tool, which has a tool housing for accommodating the battery pack assembly. The battery housing 10 and the tool housing are oriented to prevent the battery pack assembly from shaking or moving. The outer peripheral wall 122 of the battery housing 10 is provided with a guide portion 17, which is at least one axially extending guide groove 171 and / or guide rib. During battery pack assembly installation, the guide portion 17 can mate with the fitting structure of the tool housing to achieve quick positioning and installation, avoid misalignment, and improve installation efficiency.

[0048] In one embodiment, the guide portion 17 has a recessed guide groove 171, and the tool housing has a corresponding snap-fit ​​rib. The guide groove 171 engages with the snap-fit ​​rib for snap-fit ​​positioning and to improve assembly accuracy. Furthermore, the guide portion 17 has two or more guide grooves 171. Multiple guide grooves 171 work together to position the battery pack assembly, preventing impacts when the battery pack assembly is shaken. Furthermore, when two or more guide grooves 171 intersect at an angle, it also prevents mistaken insertion, avoiding incorrect assembly angles of the positive contact 211 and the negative contact 212.

[0049] In a preferred embodiment, two guide grooves 171 are provided, and the center lines of the two guide grooves 171 and the center tube 121 are aligned. The two guide grooves 171 have different groove widths to provide a foolproof design.

[0050] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. This application is intended to cover any variations, uses, or adaptations of the present invention that follow the general principles of this application and include common knowledge or customary technical means in the art that are not disclosed in this invention.

Claims

1. A battery pack assembly, comprising a battery casing, battery cells, and a control board unit, wherein the battery cells and the control board unit are electrically connected, characterized in that, The battery casing has an annular shell structure, and an axially penetrating central hole is formed in the surrounding area of ​​the battery casing. The battery casing includes a connector hole, at least two contact holes, and an annular closed space mounting cavity. Both the battery unit and the control board unit are located within the mounting cavity. The control board unit integrates a connector and conductive contacts that match the contact holes. At least a portion of the conductive contacts are exposed through the corresponding contact holes in the battery casing. The connector is adapted to the connector holes for assembly.

2. The battery pack device according to claim 1, characterized in that, The contact hole is located at the end of the battery casing, and the connector hole is located on the side wall of the battery casing.

3. The battery pack device according to claim 2, characterized in that, The contact hole is provided with three contacts, and the conductive contacts include a positive contact, a negative contact and a protective contact. The positive contact and the negative contact are distributed on both sides of the central hole.

4. The battery pack device according to claim 1, characterized in that, The battery housing includes a bottom shell and a top cover. The bottom shell includes a bottom wall, a central tube protruding from the bottom wall, and an outer peripheral wall. The outer peripheral wall surrounds the central tube to form an open receiving space. The battery unit is installed inside the bottom shell and surrounds the central tube. The control board unit is mounted on the top cover, and the control board unit and the battery unit are connected by wires. The top cover closes the opening of the accommodating space.

5. The battery pack device according to claim 4, characterized in that, The bottom shell and the top cover are connected by ultrasonic welding; or, the bottom shell and the top cover are connected by adhesive bonding.

6. The battery pack device according to claim 4, characterized in that, The battery unit includes a power supply board, a conductive sheet, a battery positioning component, and multiple power supply batteries. The multiple power supply batteries surround the central tube. The battery positioning component is arranged in two sets and positions the two ends of the power supply batteries respectively. The power supply board is located on one side of the power supply batteries. The power supply board and the conductive sheet connect the multiple power supply batteries in series. The power supply board and the control board unit are electrically connected.

7. The battery pack device according to claim 6, characterized in that, The bottom shell is provided with at least one set of positioning ribs, and the positioning ribs and the outer side wall of the battery positioning component form a complementary positioning.

8. The battery pack device according to claim 4, characterized in that, The filling medium between the control board unit and the battery unit.

9. The battery pack device according to claim 1, characterized in that, The control board unit is provided with at least one indicator light, and the battery casing is provided with a display hole corresponding to the indicator light.

10. The battery pack device according to claim 1, characterized in that, The outer peripheral wall of the battery casing is provided with a guide portion, which is configured as at least one guide groove and / or guide rib extending along the axial direction.

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