A charging structure for a battery pack
Patent Information
- Application Number
- CN202522160980.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-13
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-13
AI Technical Summary
[0004]本实用新型目的是：提供一种电池组的充电结构，以解决现有技术中在电池组上加装充电结构需要占用额外空间的问题
利用充电器的送风装置向电池组的容纳腔内送风，送入容纳腔的风从壳体上的出风口逸出带走热量，在保留原进风口散热功能的基础上集成充电端口，借助进风口附近壳体空间实现充电端口的紧凑布置，通过结构的设计兼顾空间集成与充电端口的局部散热，使通风口兼具充电功能，压缩占用空间，以适配小型化、高集成度电池组的尺寸要求，又能够提高充电端口周边的局部热量的高效散热效率，维持电池组运行时的温度稳定性。
Smart Images
Figure CN224789722U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery pack installation, and in particular to a charging structure for a battery pack. Background Technology
[0002] To improve space utilization, miniaturized and highly integrated battery devices such as mini power banks and portable energy storage power supplies are generally designed with a high-density layout of components such as cells, circuits, and interfaces. This allows multiple functions to be integrated within the limited volume of the battery casing. Traditional independent charging port layouts require additional casing space, and adding a charging port requires modifying the battery pack casing by making openings, which can easily damage the original sealing and protection. Moreover, during the operation of the battery device, especially during the charging phase, the charging socket and surrounding circuit boards will generate localized heat. For example, heat will accumulate around the charging port due to the increased fast charging power of interfaces such as Type-C. If ventilation and heat dissipation are not timely, it will not only affect the charging efficiency and interface lifespan, but may also cause localized overheating and even safety hazards. Furthermore, the mechanical fixation of the charging socket relies on the casing support. If the air inlet is integrated with the charging port, it will reduce the structural strength of the casing. The charging port lacks sufficient support, and with long-term plugging and unplugging of the charging plug and concentrated insertion and removal forces, the charging port is prone to loosening and falling off due to uneven force, which can damage the stability of the circuit connection.
[0003] Therefore, a new technical solution is needed to address the problems existing in the current technology. Utility Model Content
[0004] The purpose of this invention is to provide a charging structure for a battery pack, so as to solve the problem that adding a charging structure to a battery pack requires additional space in the prior art.
[0005] The technical solution of this utility model is: a charging structure for a battery pack, including a housing, a ventilation structure provided on the housing, a charging port opened in the ventilation structure, a charging female socket fixedly connected to the housing, and the charging port communicating with the opening of the charging female socket.
[0006] Preferably, the ventilation structure includes a plurality of air inlets formed on the housing, and the charging port is disposed adjacent to the air inlets.
[0007] Preferably, the ventilation structure further includes a guide channel, wherein the upper opening area of the guide channel is larger than the bottom area of the guide channel, and the inclination angle of the sidewall of the guide channel is 10-30°.
[0008] Preferably, the air inlet and the charging port are located on the inner bottom wall of the guide groove, with the air inlet surrounding the charging port.
[0009] Preferably, the charging female connector is detachably connected to a charger, the housing has an internally hollow receiving cavity, and the charger is equipped with an air supply device that supplies air into the receiving cavity through an air inlet.
[0010] Preferably, a reinforcing rib is provided between two adjacent air inlets, the reinforcing ribs are arranged radially with the charging port as the center, and the reinforcing ribs are fixedly connected to the housing.
[0011] Preferably, a PCB board is disposed inside the receiving cavity, and the charging female connector is fixedly connected to the PCB board.
[0012] Preferably, the PCB board has a fixing groove, and the charging female connector is fixedly connected in the fixing groove.
[0013] Preferably, the housing has a guide groove communicating with the charging port on the side near the PCB board, and the opening area of the guide groove on the side near the PCB board is larger than the opening area on the side of the guide groove away from the PCB board.
[0014] Preferably, a buffer pad is fixedly connected between the housing and the charging socket.
[0015] Compared with the prior art, the advantages of this utility model are: The charger's air supply device delivers air into the battery pack's housing cavity. The air entering the housing cavity escapes from the air outlet on the casing, carrying away heat. While retaining the original air inlet's heat dissipation function, the charging port is integrated. The compact arrangement of the charging port is achieved by utilizing the space near the air inlet in the casing. Through structural design, both space integration and local heat dissipation of the charging port are considered, allowing the vent to also function as a charging port, reducing the space occupied, and adapting to the size requirements of miniaturized, highly integrated battery packs. At the same time, it can improve the efficiency of local heat dissipation around the charging port, maintaining the temperature stability of the battery pack during operation. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the battery pack described in this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 2 Enlarged view of point B in the middle; Figure 4 This is a schematic diagram of the battery pack of the present invention with the casing removed; Figure 5 This is a schematic diagram of the battery pack of this utility model without the casing and charging socket; Figure 6This is a schematic diagram of the structure of the housing and charging socket described in this utility model; Figure 7 for Figure 6 A magnified view of point C in the middle.
[0017] The components include: 1. Housing; 12. Charging port; 121. Charging female connector; 13. Guide groove; 14. Buffer pad; 2. Ventilation structure; 21. Air inlet; 211. Reinforcing rib; 22. Air guide groove; 3. PCB board; 31. Fixing groove. Detailed Implementation
[0018] The present invention will be further described in detail below with reference to specific embodiments: like Figures 1-7As shown, the battery pack housing 1 has an internally hollow cavity, in which electronic components such as a PCB board 3 are installed. The ventilation structure 2 on the housing 1 includes a guide channel 22 and several air inlets 21 on the inner bottom wall of the guide channel 22. The charging port 12 is adjacent to the air inlets 21. The upper opening area of the guide channel 22 is larger than its bottom area. The inclination angle of the sidewall of the guide channel 22 is 10-30°, such as 10°, 15°, 20°, 25°, or 30°. The charging port 12 is located on the inner bottom wall of the guide channel 22. The opening of the female charging connector 121 communicates with the charging port 12. The end of the female charging connector 121 away from the charging port 12 is soldered and fixed to the PCB board 3. The opening end of the female charging connector 121 is mounted on the housing 1 through the charging port 12. In at least one embodiment, the air inlet 21 is arranged around the charging port 12. The outwardly flared guide groove 22 helps to guide airflow, enhance heat dissipation and ventilation, and is less likely to wear the housing 1 when the charging head is plugged and unplugged for a long time. A reinforcing rib 211 is provided between two adjacent air inlets 21. The reinforcing rib 211 is fixedly connected to the housing 1. The reinforcing rib 211 is positioned with respect to the charging port 1. The ports 12 are arranged radially around the center to prevent the housing 1 from deforming or breaking due to the dense openings. When plugging or unplugging the charging plug, the reinforcing ribs 211 distribute the force throughout the housing 1, preventing the force from concentrating around the charging port 12. A buffer pad 14 is filled between the housing 1 and the charging socket 121. The buffer pad 14 can fill the small gap between the charging socket 121 and the housing 1, preventing the charging socket 121 from becoming loose due to long-term vibration. It can also absorb the impact force when plugging or unplugging the charging plug, reducing the mechanical stress on the charging socket 121. The side of the housing 1 closest to the PCB board 3 has an opening for the charging port 12. The guide groove 13 is connected, and the side wall of the guide groove 13 expands inward towards the side closer to the PCB board 3. The guide groove 13 facilitates the installation and connection of the charging female connector 121 and the housing 1. The charging female connector 121 can be inserted into the charging port 12 more smoothly and connected to the housing 1. The charger is equipped with an air supply device that supplies air into the receiving cavity through the air inlet 21. By using the air supply device to supply air into the receiving cavity, the charging port 12 is integrated while retaining the original heat dissipation function of the air inlet 21. This achieves the integration of heat dissipation and charging functions in the same area on the housing 1, thereby reducing additional space occupation.
[0019] like Figures 2-7As shown, in at least one embodiment, the battery pack is an 18V lithium-ion battery pack with communication terminals. The charging port 12 is a Type-C interface with an opening size of 8.3mm × 2.5mm. The cross-section of the guide groove 22 is the same shape as the cross-section of the charging port 12, scaled up proportionally from the same center. A fixing groove 31 is provided on the PCB board 3. One end of the charging female connector 121 is soldered into the fixing groove 31. The charging female connector 121 has 16 pins inside. The charging female connector 121 is a waterproof Type-C female connector that meets IP65 / IP67 standards. The buffer pad 14 The silicone sealing ring is 0.5mm thick. After installation, it can seal the charging port 12 and the housing 1, preventing dust and liquid from entering through the gap between the charging port 12 and the housing 1. There are 8 air inlets 21. The reinforcing ribs 211 can be made of metal or the same material as the housing 1, but the structural strength of this position is enhanced by increasing the width and / or thickness. There are 8 reinforcing ribs 211, and the width is 2mm. The PCB board 3 is coated with three-proof paint to reduce the damage to the PCB board 3 caused by dust, moisture, foreign objects (such as metal fragments, fibers) entering the cavity through the air inlets 21.
[0020] like Figures 1-7 As shown, during charging, the charger is inserted into the charging port 12 and connected to the charging socket 121. The charger sends air into the housing cavity of the battery pack. The air sent into the housing cavity escapes from the air outlet on the shell and carries away the heat. The charging port 12 is integrated while retaining the heat dissipation function of the original air inlet 21. The space of the ventilation structure 2 is used to achieve a compact arrangement of the compatible charging port 12. The design of the structure takes into account both space integration and local heat dissipation of the charging port 12, so that the ventilation port also has a charging function, compresses the space occupied, adapts to the size requirements of miniaturized and highly integrated battery packs, and can also improve the efficiency of local heat dissipation around the charging port 12, maintaining the temperature stability of the battery pack during operation.
[0021] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.
Claims
1. A charging structure for a battery pack, comprising a housing (1), characterized in that: The housing (1) is provided with a ventilation structure (2), and a charging port (12) is provided inside the ventilation structure (2). The housing (1) is fixedly connected to a charging female socket (121), and the charging port (12) is connected to the opening of the charging female socket (121).
2. The charging structure of a battery pack according to claim 1, characterized in that: The ventilation structure (2) includes a plurality of air inlets (21) opened on the housing (1), and the charging port (12) is arranged adjacent to the air inlets (21).
3. The charging structure of a battery pack according to claim 2, characterized in that: The ventilation structure (2) also includes a guide channel (22), the upper opening area of the guide channel (22) is larger than the bottom area of the guide channel (22), and the inclination angle of the side wall of the guide channel (22) is 10-30°.
4. The charging structure of a battery pack according to claim 3, characterized in that: The air inlet (21) and the charging port (12) are located on the inner bottom wall of the guide groove (22), and the air inlet (21) is arranged around the charging port (12).
5. The charging structure of a battery pack according to claim 2, characterized in that: The charging female connector (121) is detachably connected to a charger. The housing (1) has an internally hollow cavity. The charger is equipped with an air supply device that supplies air into the cavity through an air inlet (21).
6. The charging structure of a battery pack according to claim 2, characterized in that: A reinforcing rib (211) is provided between two adjacent air inlets (21). The reinforcing rib (211) is arranged radially with the charging port (12) as the center. The reinforcing rib (211) is fixedly connected to the housing (1).
7. The charging structure of a battery pack according to claim 5, characterized in that: A PCB board (3) is provided inside the cavity, and the charging socket (121) is fixedly connected to the PCB board (3).
8. The charging structure of a battery pack according to claim 7, characterized in that: The PCB board (3) has a fixing groove (31) and the charging female connector (121) is fixedly connected in the fixing groove (31).
9. The charging structure of a battery pack according to claim 7, characterized in that: The housing (1) has a guide groove (13) connected to the charging port (12) on the side near the PCB board (3). The opening area of the guide groove (13) on the side near the PCB board (3) is greater than the opening area of the guide groove (13) on the side away from the PCB board (3).
10. The charging structure of a battery pack according to claim 1, characterized in that: A buffer pad (14) is fixedly connected between the housing (1) and the charging female (121).