WO2021093638A1 - Power bank, rental terminal, and power bank rental system - Google Patents

Abstract

A power bank, a rental terminal, and a power bank rental system. The power bank (1) comprises a housing (10), a PCB (2) disposed in the housing (10), and a rechargeable battery (3). The PCB (2) is electrically connected to the rechargeable battery (3); two first metal contact groups (16) connected to the PCB (2) are provided on the end surface of at least one end of the housing (10); the two first metal contact groups (16) are symmetrically arranged with respect to the longitudinal center surface of the end surface. The rental terminal (100) comprises a rental bin (6) in which a power bank (1) can be placed. The inner end surface of the rental bin (6) is provided with two second metal contact groups (17), and at least one of the second metal contact groups (17) is selectively electrically connected to at least one first metal contact group (16) on the power bank (1).

Description

Power bank, rental terminal and power bank rental system

Cross-references to related applications

This application is required to be submitted to the Chinese Patent Office on November 13, 2019. The application number is 201921957129.6, and the application name is a Chinese patent application named "a kind of power bank, rental terminal and power bank rental system", and on November 13, 2019 Submitted to the Chinese Patent Office, the application number is 201921957100.8, the application name is "a kind of shared power bank" for the priority of the Chinese patent application, the entire content of which is incorporated into this application by reference.

Technical field

This application relates to the field of charging and lending, in particular to a power bank, a rental terminal, and a power bank rental system.

Background technique

With the popularization of mobile terminals, the use of power banks has become more and more widespread. A power bank is a portable charger that can be carried by individuals and can store electric energy. It is mainly used for charging mobile terminals (such as mobile phones, wireless phones, notebook computers) such as handheld mobile devices. It is especially suitable for occasions where there is no external power supply. .

In the power bank rental system on the market, the power bank and the rental terminal must be accurately contacted in a specific direction to realize the communication and charging between the power bank and the rental terminal, which causes inconvenience for users and poor product experience.

Summary of the invention

According to various embodiments disclosed in the present application, a power bank, a rental terminal, and a power bank rental system are provided.

According to one aspect of the present application, a power bank is provided. The power bank includes a casing, a PCB board arranged in the casing, and a rechargeable battery. The PCB board is electrically connected to the rechargeable battery. At least one end of the casing is provided with two sets connected to the PCB board. The first metal contact group, the two first metal contact groups are symmetrically arranged with respect to the longitudinal center plane of the end surface.

In one embodiment, each of the first metal contact groups includes at least two first metal contacts, and the first metal contacts with the same function in the two first metal contact groups are relative to the longitudinal center. Face symmetrical setting.

In one embodiment, the housing includes a first end and a second end, the first end is provided with a narrowing portion for indicating the return direction, and the cross-sectional area of the narrowing portion is oriented from the second end. The direction of the first end gradually decreases; at least the end surface of the first end is provided with the two sets of first metal contact groups.

In one embodiment, the outer side surface of the narrowed portion forms a narrowed surface, and the narrowed surface is a curved surface or a flat surface.

In one embodiment, the PCB board includes a connecting board and a main PCB board close to the first end of the housing; lamp beads and switches are provided inside the housing near the second end of the housing, and the connection One end of the board is connected to the main PCB board, and the other end of the connection board is connected to the lamp beads and the switch.

In one embodiment, the PCB board includes a connecting board, a main PCB board close to the first end of the housing, and a secondary PCB board close to the second end of the housing, and the secondary PCB board is provided with lamp beads. And a switch; one end of the connecting board is connected to the main PCB board, and the other end of the connecting board is connected to the auxiliary PCB board.

In one embodiment, the second end of the housing is provided with a light guide plate corresponding to the position of the lamp bead, and the light guide plate is provided with a light guide annular protrusion exposed on the housing, and the light guide annular convex There is a button that can trigger the switch in the center of the riser.

In an embodiment, a card slot is provided on the narrowed part of the housing.

In one embodiment, the power bank further includes at least one charging cable; the first end of the wire body of the charging cable extends into the inside of the housing and is connected to the PCB board, and the second end is provided with an electrical output terminal The housing is provided with at least one receiving slot, the receiving slot includes a wire body slot section communicating with each other and used to receive the wire body of the charging cable and a terminal slot section used to receive the electrical output terminal, The connecting position of the terminal groove section and the wire body groove section is provided with a guiding inclined surface inclined from the bottom of the groove to the groove opening, and the electrical output terminal can be slid out of the terminal groove by the guiding inclined surface under the action of an external force segment.

In an embodiment, the electrical output terminal is one of Micro-USB, Type-C, and Lightning interfaces, the end of the terminal slot section is provided with a placement hole, and the electrical output terminal can partially extend into the Mentioned in the placement hole.

In one embodiment, the wire body of the charging cable includes a conductor wire and an insulating coating provided on the outside of the conductor wire.

In one embodiment, the connecting board is a flexible circuit board, and the flexible circuit board is adjacent to the rechargeable battery, between the rechargeable battery and the flexible circuit board, or between the flexible circuit board and the flexible circuit board. An elastic conductive part is arranged between the shells, and an alarm circuit that can be triggered by the elastic conductive part is arranged on the connecting plate.

In one embodiment, the elastic conductive part is squeezed when the rechargeable battery swells to conduct the alarm circuit.

In an embodiment, each of the first metal contact groups includes a charging contact and a reading and writing contact.

According to another aspect of the present application, a rental terminal is provided. The rental terminal includes a rental warehouse where a power bank can be placed. The inner end of the rental warehouse is provided with two sets of second metal contact sets. At least one set of the second metal contact sets is selectively connected to the power bank. The at least one set of first metal contact sets are electrically connected.

According to another aspect of the present application, a power bank rental system is provided. The power bank rental system includes a power bank and a rental terminal provided with a rental warehouse for placing the power bank. One of the power bank and the rental warehouse is provided with two sets of first metal contacts, and the other is provided with One or two sets of second metal contact sets, so that when the power bank is placed in the rental warehouse, at least one set of the first metal contact sets selectively touches at least one set of the second metal contact sets. Point group electrical connection.

In one embodiment, the power bank is provided with two sets of first metal contact sets, and two sets of second metal contact sets are provided in the rental warehouse. Two sets of second metal contact sets are respectively connected correspondingly.

In one embodiment, both the first metal contact group and the second metal contact group include charging contacts and read-write contacts.

The details of one or more embodiments of the present application are presented in the following drawings and description, and other features and advantages of the present application will become apparent from the description, drawings and claims.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor.

Fig. 1 is a schematic structural diagram of a power bank rental system according to an embodiment;

Figure 2 is a schematic structural diagram of a power bank according to an embodiment;

3 is a schematic diagram of the internal structure of a power bank according to an embodiment;

Figure 4 is a schematic diagram of the internal structure of a power bank according to an embodiment;

Figure 5 is a schematic diagram of the internal structure of a power bank according to an embodiment;

Fig. 6 is a schematic structural diagram of a housing of a power bank according to an embodiment;

Fig. 7 is a schematic diagram of an exploded structure of a charging cable according to an embodiment.

Detailed ways

It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other if there is no conflict. The preferred embodiments of the present application will now be described in detail with reference to the accompanying drawings.

The embodiment of the present application provides a power bank rental system, and the power bank 1 provided by the embodiment of the present application can be used in the power bank rental system. As shown in FIG. 1, the power bank rental system includes a power bank 1 and a rental terminal 100 provided with a rental warehouse 6 for storing the power bank 1. The rental warehouse 6 has an opening for inserting the power bank 1 into the rental warehouse 6. The rental warehouse 6 also has an inner end surface disposed opposite to the opening, and the inner end surface is suitable for abutting against the end surface of the power bank 1 inserted into the rental warehouse 6. Referring to Figure 2, the end face of the shell of the power bank 1 opposite to the inner end face of the rental warehouse 6 is provided with two sets of first metal contact sets 16, and the two sets of first metal contact sets 16 are relative to the longitudinal center of the end face of the shell. Face symmetrical setting. Among them, the longitudinal center plane of the end face refers to a plane passing through the longitudinal center line of the end face and perpendicular to the end face. When the power bank 1 is placed horizontally in the rental warehouse 6, the longitudinal centerline of the end surface is perpendicular to the horizontal plane. The inner end surface of the rental warehouse 6 can be provided with two sets of second metal contact sets 17. When the power bank 1 is inserted into the rental warehouse 6, the two sets of second metal contact sets 17 and the two sets of first metal contact sets 16 At the same time electrical connection. Of course, in some embodiments, two sets of second metal contact sets 17 may be provided on the inner end face of the rental warehouse 6, and a set of first metal contact sets 16 are provided on the end face of the housing of the power bank 1. 1 When inserted into the rental warehouse 6 on the front or back, the first metal contact group 16 can always be electrically connected to the second metal contact group 17. Alternatively, in some embodiments, two sets of first metal contact sets 16 are provided on the end surface of the shell of the power bank 1, and a set of second metal contact sets 17 may be provided on the inner end surface of the rental warehouse 6 to act as a power bank. 1 When inserted into the rental warehouse 6 on the front or back, one of the two sets of first metal contact sets 16 of the power bank 1 can always be connected to a set of second metal contact sets 17.

By setting the number of the first metal contact groups 16 of the power bank 1 of the power bank rental system to two groups and/or the number of the second metal contact groups 17 of the rental warehouse 6 to two groups, in this way, when the power bank 1 The electrical connection between the first metal contact group 16 and the second metal contact group 17 can be realized whether it is placed in the rental warehouse 6 on the front or back and in contact with the rental terminal 100, which is convenient for users and enhances user experience. Each set of metal contact sets contains the same function, and only one set of the first metal contact set 16 and one set of the second metal contact set 17 are in complete contact to meet the connection requirements of the rental terminal 100 and the power bank 1. Structurally, the fault-tolerant design is improved and the user experience is improved.

In one embodiment, each of the first metal contact groups 16 includes at least two first metal contacts, and the first metal contacts of the two groups of the first metal contact groups 16 have the same function relative to the housing 10. The longitudinal center planes of the end faces are symmetrically arranged.

The first metal contact can be selected from one or more of charging contacts, read-write contacts, communication contacts, and program burn contacts. The charging contacts enable the rental terminal 100 to supply power to the power bank 1, and the communication contacts are used to realize the two-way data transmission between the power bank 1 and the rental terminal 100. The program burning contacts can realize the program update of the rental terminal 100 to the power bank 1 . If the program of the power bank 1 needs to be upgraded and updated, the program of the power bank 1 can be stored in the rental terminal 100 in a wired or wireless manner. After the rental terminal 100 receives the power bank 1 program, the power bank 1 can be manually or automatically triggered to program the power bank 1 through the program burn contacts to complete the program upgrade and update of the power bank 1 without returning the power bank 1 Factory maintenance upgrades and updates the program, which can reduce the maintenance cost of power bank 1, extend the life cycle of power bank 1, and reduce development risks.

In one embodiment, as shown in FIG. 6, each first metal contact group 16 includes a charging contact 161 and a reading and writing contact 162. The charging contacts 161 of the two first metal contact groups are arranged symmetrically with respect to the longitudinal center plane of the end surface of the housing 10, and the reading and writing contacts 162 of the two first metal contact groups are arranged symmetrically with respect to the longitudinal center of the end surface of the housing 10 Face symmetrical setting. In this way, the power bank needs to be inserted into the rental warehouse 6 for charging or communication, and there is no need to distinguish between the front side and the back side, and the user experience is better, saving the user the time to return the power bank. Because any group of the first metal contact group 16 includes all functions, only one group of the first metal contact group 16 needs to work normally to meet the charging and communication requirements. In one embodiment, each group of the first metal contact group 16 has two charging contacts 161, for example, including a positive electrode contact and a negative electrode contact. The reading and writing of each group of the first metal contact group 16 The number of contacts 162 is at least one. In the embodiment shown in FIG. 2, the same group of first metal contact group 16 includes one read-write contact 162, and the multiple first metal contacts of the two groups of first metal contact group 16 are in accordance with the "positive contact- Negative contacts-read and write contacts" and "read and write contacts-negative contacts-positive contacts" are set in sequence. In an embodiment, two sets of through holes 18 are symmetrically provided on the end surface of one end of the housing 10, and the two sets of through holes 18 are provided correspondingly to the two sets of first metal contacts. For example, the charging contact 161 and the reading and writing contact 162 are exposed to the housing 10 through the through hole 18 to realize charging or communication.

It can be understood that a set of second metal contact sets 17 corresponding to a set of first metal contact sets 16 may also include charging contacts and read-write contacts. The number of the second metal contacts in the second metal contact group 17 can be set to two, three, or more than three according to actual needs. In this way, when the power bank 1 is placed in the rental warehouse 6 on the front or back and is in contact with the rental terminal 100, the electrical connection between the first metal contact group 16 and the second metal contact group 17 can be realized, which is convenient for users to use , Improve user experience.

In some embodiments, the power bank 1 includes a casing 10, a PCB board 2 arranged in the casing 10, and a rechargeable battery 3 connected to the PCB board 2. As described above, at least one end surface of the casing 10 is provided with Two groups of first metal contact groups 16, two groups of first metal contact groups 16 are connected to the PCB board 2 and are arranged symmetrically with respect to the longitudinal center plane of the end surface of the housing 10.

As mentioned above, by arranging two first metal contact groups 16 symmetrically arranged with respect to the longitudinal center plane of the end face of the power bank 1 on the end face of the housing 10 of the power bank 1, the power bank 1 is connected to the rental When the terminal 100 is in contact, an electrical connection between the power bank 1 and the rental terminal 100 can be realized, so that charging or communication can be realized, which is convenient for users to use and improves user experience.

In one embodiment, the number of the first metal contacts in the first metal contact group 16 can be set to two, three, or more than three according to actual needs. The first metal contacts with the same function in the two first metal contact groups 16 are symmetrically arranged with respect to the longitudinal center plane of the end surface. The first metal contact can be used for the rental terminal 100 to charge the power bank 1 or to achieve communication between the two. The first metal contact can be a POGO PIN contact, which has high reliability and accurate contact.

In an embodiment, the through hole 18 may be a single through hole exposing the entire first metal contact group 16 to the housing 10, or may include a plurality of through holes, and each through hole is connected to the first metal contact group 16 One of the first metal contacts corresponds to, and the first metal contact of the first metal contact group 16 is exposed to the housing 10.

In one embodiment, the power bank 1 is further provided with a narrowing part 11. Specifically, the housing 10 has a first end 110 and a second end 120 opposite to the first end 110. The first end 110 is used to first be inserted into the rental warehouse 6 and is provided with a narrowing portion for indicating the direction of return. 11. The cross-sectional area of the narrowing portion 11 gradually decreases along the direction from the second end 120 to the first end 110. When returning the power bank, the user can easily observe the narrowing part 11, and quickly confirm which end of the power bank should be placed in the rental warehouse according to the return direction indicated by the narrowing part 11, so that the power bank can be returned smoothly. In the leased warehouse. As a result, through the arrangement of the narrowing portion 11, the efficiency of returning the power bank by the user is improved, and the user experience is better.

Specifically, in the embodiment shown in the drawings, the cross-sectional area of the narrowing portion 11 gradually decreases from the middle of the housing 10 to the first end 110 of the housing 10. It should be noted that the The middle part refers to any position from one end to the other end of the housing 10. In other embodiments, the cross-sectional area of the narrowed portion 11 may also gradually decrease from one end to the other end of the housing 10.

In an embodiment, one end of the narrowing portion 11 is connected to the housing 10, and a side surface of the narrowing portion 11 is provided with a narrowing surface 111, and the narrowing surface 111 is a curved surface or a flat surface. It should be noted that, in the extending direction from the end of the narrowed portion 11 connected to the housing 10 to the end of the narrowed portion 11 away from the housing 10, the narrowed portion 11 is provided with at least one narrowed surface 111. At least one narrowing surface 111 is gradually recessed inward in a direction extending from an end of the narrowing portion 11 connected to the housing 10 toward an end away from the housing 10 so that the cross-sectional area of the narrowing portion 11 is gradually reduced.

As shown in FIGS. 3 and 4, the PCB board 2 includes a connecting board 21 and a main PCB board 22. The main PCB board 22 is arranged inside the housing 10 and close to the first end 110 of the housing 10. The connecting board 21 has a high degree of reliability, high wiring density, light weight, and thin thickness. A lamp bead and a switch (not shown in the figure) are arranged inside the housing 10 near the second end 120. One end of the connecting board 21 is connected to the main PCB board 22, and the other end is connected to the lamp across the rechargeable battery 3 Beads and switches. The lamp beads can emit corresponding lights according to the signal transmitted from the main PCB board 22 through the connection board 21 to indicate the rental status of the power bank, power information, and the like. The switch can send a signal to the main PCB board 22 through the connection board 21 to control the switch, reset and other states of the power bank. The use of the connecting board 21 can increase the flexibility of the main PCB board 22 and the lamp beads and switch settings, reduce the occupied volume, and make the power bank smaller.

In another embodiment, the PCB board 2 includes a connecting board 21, a main PCB board 22 disposed inside the casing 10 and close to the first end 110 of the casing 10, and a main PCB board 22 disposed inside the casing 10 and close to the casing 10. The secondary PCB board (not shown in the figure) at the second end 120 of the secondary PCB board is provided with lamp beads and switches (not shown in the figure). One end of the connecting board 21 is connected to the main PCB board 22 and the other One end crosses the rechargeable battery 3 to connect to the secondary PCB board. The main PCB board 22 transmits signals to the auxiliary PCB board through the connecting board 21 to realize the control of the lamp beads and switches.

As shown in Figure 4, the second end 120 of the housing 10 is provided with a light guide plate (not shown in the figure) corresponding to the position of the lamp bead, and the light guide plate is provided with a light guide ring that can be exposed outside the housing 10 A shaped protrusion 12, the light emitted by the lamp bead can pass through the light guide annular protrusion 12, and the center of the light guide annular protrusion 12 is provided with a button 13 that can trigger the switch. When the button 13 touches the switch, a signal can be triggered, and the signal is then transmitted to the connecting board 21 to control the switch, reset and other states of the rechargeable battery 3. The button 13 is provided on the housing 10, specifically, the button 13 is provided on the second end 120 of the housing 10 to facilitate the user to operate the button 13. The button 13 may be a physical button, a touch button or a sensor button, and pressing or touching the button 13 can trigger a signal. When the button 13 is operated, the light emitted by the lamp beads produces corresponding words, patterns, colors and/or flashing instructions on the light guide annular protrusion 12. The light-guiding annular protrusion 12 may be an aperture formed of a light-transmitting material integrally formed with the housing 10. In other embodiments, the light-guiding annular protrusion 12 may also be an independent structural component that can transmit light. By arranging the light-guiding annular protrusion 12 around the button 13, the internal space of the power bank is saved. The design of the light-guiding annular protrusion 12 can also realize many interactive functions of the power bank, such as displaying power or specific functions. Such as colored ring lights, flashing gradients and other effects.

As shown in FIG. 2, the narrowing surface 111 of the narrowing portion 11 is provided with a card slot 14. When the power bank 1 is located in the rental warehouse, the power bank 1 can be engaged with the rental through the card slot 14 Inside the warehouse. Since the card slot 14 is provided on the narrowed surface 111, it is not easy to access the card slot 14 from the outside, thereby improving the anti-theft performance of the power bank. Moreover, when returning the power bank, the user can also judge the direction of the power bank based on the position of the card slot 14, so as to return the power bank quickly.

As shown in FIGS. 2 to 6, the power bank 1 further includes one or more charging cables 4, the charging cable 4 includes a cable body 43, and the cable body 43 includes a first end 41 and a second end 42. The first end 41 extends into the housing 10 and is connected to the PCB board 2, and the second end 42 is provided with an electrical output terminal. After the second terminal 42 is connected to the mobile terminal, the rechargeable battery 3 can output electrical energy to the mobile terminal through the charging cable 4. Specifically, multiple charging lines 4 can be provided to charge mobile terminals with different interface types or multiple mobile terminals with the same interface type at the same time.

The housing 10 is provided with at least one receiving slot 15, the number of the receiving slot 15 corresponds to the number of the charging cable 4, the receiving slot 15 includes mutual communication and is used for receiving the wire body 43 and the electrical output respectively. The wire body groove section 151 and the terminal groove section 152 of the terminal are provided with a guide inclined surface 153 inclined from the groove bottom to the groove opening at the position where the wire body groove section 151 and the terminal groove section 152 communicate, and the electrical output The terminal can be slid out of the terminal slot section 152 by the guiding inclined surface 153 under the action of external force. By arranging the housing 10 with a storage slot 15 that matches with the charging cable 4, the user can slide the charging cable 4 out along the guiding slope 153 by pushing operation, and the charging cable can be easily taken out during use. 4. Better user experience.

As shown in FIGS. 3 and 4, the electrical output terminal provided at the second end 42 may be one or more of Micro-USB, Type-C, and Lightning interfaces. When there are multiple charging lines 4, the electrical output terminals are different types of interfaces. The end of the terminal slot section 152 is provided with a mounting hole 1521. When the charging cable 4 is received in the receiving slot 15, the electrical output terminal can partially extend into the mounting hole 1521, so as to output electricity. The terminals are covered and protected to reduce the wear of the joints.

In one embodiment, the cross-sectional area of the wire body groove section 151 is larger than that of the wire body 43, the outer shape of the wire body 43 is cylindrical, and the wire body groove section 151 is used for accommodating the wire body 43. The wire body 43 of the charging cable 4, the width of the wire body groove section 151 is slightly greater than or equal to the diameter of the charging wire 4, so that the charging wire 4 is only slightly squeezed and fixed in the wire body groove section 151, ensuring charging While the cord 4 will not easily fall out of the cord body groove section 151, the charging cord 4 can be taken out relatively easily. The wire body groove section 151 also provides a guiding function for the placement of the charging wire 4. When the charging cable 4 is received in the receiving groove 15, the electrical output terminal is located in the terminal groove section 152, and the electrical output terminal can slide out from the terminal groove section 152 along the guide slope 153 , The wire body 43 of the charging wire 4 connected to the electrical output terminal is pushed by the electrical output terminal and pulled out of the wire body slot section 151. At this time, the charging wire 4 can be taken out of the receiving slot 15 for feeding Mobile terminal charging.

As shown in FIG. 7, the charging cable 4 includes a wire drawing resistant 44 and a conductive wire 45. The design of the wire drawing resistant 44 can increase the strength and toughness of the charging wire 4 and prevent the charging wire 4 from appearing due to multiple pulls. Fracture, deformation, or short-circuit of the positive and negative electrodes may cause a fire. The anti-drawing wire 44 and the conductor wire 45 are covered with an insulating coating 46 to prevent electric leakage. Preferably, the conductor wire 45 and the anti-drawing wire 44 are entangled with each other to form a twist-like structure, the material of the conductor wire 45 is pure copper, the conductor wire 45 is also covered with a covering body 451, and the insulating coating 46 Joining with the covering body 451 as a whole greatly improves the tensile, anti-swing and anti-torsion performance of the entire charging cable 4 and prolongs the service life of the charging cable 4.

As shown in FIG. 3 and FIG. 4, the power bank 1 is further provided with at least one elastic conductive part 5. In one embodiment, the elastic conductive part 5 is arranged between the connecting plate 21 and the rechargeable battery 3, and the connecting plate 21 is provided with an alarm circuit that can be connected to the elastic conductive part 5. The arrangement of the elastic conductive part 5 can increase the safety of the power bank. The wire of the elastic conductive part 5 is disconnected from the alarm circuit under normal conditions. When the rechargeable battery 3 is swollen, the elastic conductive part 5 is squeezed and the wire is connected to the alarm. The lines are connected to turn on the corresponding alarm line, and the power bank can emit an alarm tone or send a prompt signal to the background system of the power bank. In another embodiment, the elastic conductive part 5 may also be arranged between the connecting plate 21 and the housing 10.

Because the elastic conductive part 5 has a certain force range and toughness, it avoids the false trigger behavior caused by the self-expansion of the rechargeable battery 3 during charging and discharging. Moreover, the elastic conductive part 5 is a physical mechanical structure with stable performance and not easy to produce error. In addition, the shape, size and number of the elastic conductive parts 5 can be set according to actual needs, and the overall structure design is simple.

In one embodiment, the elastic conductive portion 5 may be a pot piece, which has good conduction performance and stable resilience, high reliability and low cost. The pot piece is arranged between the connecting plate 21 and the rechargeable battery 3, or between the connecting plate 21 and the housing 10. When the rechargeable battery 3 bulges and expands, the pot piece is squeezed to conduct the corresponding alarm circuit Therefore, the power bank can issue an alarm tone or send an alarm signal to the background system of the power bank 1, with a simple structure and low cost.

The size and number of the elastic conductive parts 5 can be set according to actual needs. Each elastic conductive part 5 can conduct the circuit on the connecting board 21. As long as the rechargeable battery 3 bulges and expands and one of the elastic conductive parts 5 is squeezed, the alarm circuit on the connecting board 21 can be turned on. Detection of bulging and swelling of rechargeable battery 3.

The connecting board 21 can be a flexible printed circuit (Flexible Printed Circuit, referred to as FPC) or a circuit board with a material hardness greater than FPC, as long as it is provided with a circuit that can be connected to the elastic conductive part 5, and the connecting board 21 The line of is turned on, indicating that the rechargeable battery 3 is bulging and swelling, and the power bank can detect the bulging and swelling of the rechargeable battery 3. In one embodiment, the connecting board 21 is a flexible circuit board, and the flexible circuit board is adjacent to the rechargeable battery 3.

The embodiment of the present application also provides a rental terminal 100. The rental terminal 100 includes a rental warehouse 6 where the power bank 1 can be placed. As mentioned above, two sets of second metal contact sets 17 are provided on the inner end surface of the rental warehouse 6.

By symmetrically arranging two sets of second metal contact sets 17 on the inner end face of the rental warehouse 6 with respect to the longitudinal center plane of the inner end face, the power bank 1 is placed in the rental warehouse 6 and the rental terminal 100 either on the front or back side. When in contact, the power bank 1 can be electrically connected to the rental terminal 100 to realize charging or communication, which is convenient for users to use and improves user experience.

Compared with the prior art, by setting the number of the first metal contact groups 16 of the power bank 1 of the power bank rental system to two groups and/or the number of the second metal contact groups 17 of the rental warehouse 6 to two groups In this way, when the power bank 1 is placed in the rental warehouse 6 on the front or back and in contact with the rental terminal 100, the electrical connection between the first metal contact group 16 and the second metal contact group 17 can be realized, which is convenient for users to use , Improve user experience. Each set of metal contact sets contains the same functions, and only one of the first metal contact set 16 and the second metal contact set 17 are in full contact to meet the connection requirements of the rental terminal 100 and the power bank 1. From the structure Improved fault-tolerant design and improved user experience.

It should be understood that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit them. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features can be modified. Perform equivalent replacements; and all these modifications and replacements shall fall within the protection scope of the appended claims of this application.

Claims (18)

1. A power bank includes a casing, a PCB board arranged in the casing, and a rechargeable battery. The PCB board is electrically connected to the rechargeable battery. At least one end of the casing is provided with two terminals connected to the PCB board. A first metal contact group is set, and the two first metal contact groups are symmetrically arranged with respect to the longitudinal center plane of the end surface.
2. The power bank according to claim 1, wherein each of the first metal contact groups includes at least two first metal contacts, and the first metal contacts with the same function in the two first metal contact groups are opposite to The longitudinal center planes are symmetrically arranged.
3. The power bank according to claim 1, wherein the housing includes a first end and a second end, the first end is provided with a narrowing portion for indicating the return direction, and the cross-sectional area of the narrowing portion extends from the The direction of the second end toward the first end gradually decreases; at least the end surface of the first end is provided with the two sets of first metal contact sets.
4. The power bank according to claim 3, wherein the outer side surface of the narrowed portion forms a narrowed surface, and the narrowed surface is a curved surface or a flat surface.
5. The power bank according to claim 3, the PCB board includes a connecting board and a main PCB board close to the first end of the casing; lamp beads and switches are arranged inside the casing near the second end of the casing One end of the connecting board is connected to the main PCB board, and the other end of the connecting board is connected to the lamp beads and the switch.
6. The power bank according to claim 3, the PCB board comprises a connecting board, a main PCB board close to the first end of the casing, and a sub PCB board close to the second end of the casing, the sub PCB board A lamp bead and a switch are provided; one end of the connecting board is connected to the main PCB board, and the other end of the connecting board is connected to the auxiliary PCB board.
7. The power bank according to claim 5, wherein the second end of the housing is provided with a light guide plate corresponding to the position of the lamp bead, and the light guide plate is provided with a light guide annular protrusion exposed on the housing, the The center of the light guide ring-shaped protrusion is provided with a button that can trigger the switch.
8. According to the power bank according to any one of claims 3-7, a card slot is provided on the narrowed part of the shell.
9. The power bank according to any one of claims 3-7, the power bank further comprising at least one charging cable; the first end of the wire body of the charging cable extends into the inside of the housing and is connected to the PCB board, The second end is provided with an electric output terminal;

   The housing is provided with at least one receiving slot, the receiving slot includes a wire body slot section communicating with each other and used to receive the wire body of the charging cable and a terminal slot section used to receive the electrical output terminal, so The connecting position of the terminal slot section and the line body slot section is provided with a guiding inclined surface inclined from the bottom of the groove to the slot, and the electrical output terminal can be slid out of the terminal groove section by the guiding inclined surface under the action of external force. .
10. The power bank according to claim 9, wherein the electrical output terminal is one of Micro-USB, Type-C, and Lightning interfaces, the end of the terminal slot section is provided with a placement hole, and the electrical output terminal can be Part of it extends into the mounting hole.
11. The power bank according to claim 9, wherein the wire body of the charging cable includes a conductive wire and an insulating coating provided on the outside of the conductive wire.
12. The power bank according to claim 5 or 6, the connecting board is a flexible circuit board, the flexible circuit board is adjacent to the rechargeable battery, or between the rechargeable battery and the flexible circuit board. An elastic conductive part is arranged between the flexible circuit board and the housing, and an alarm circuit that can be triggered by the elastic conductive part is arranged on the connecting board.
13. The power bank according to claim 12, wherein the elastic conductive part is squeezed when the rechargeable battery swells to conduct the alarm circuit.
14. The power bank according to claim 3, each of the first metal contact groups includes a charging contact and a reading and writing contact.
15. A rental terminal includes a rental warehouse where a power bank can be placed. The inner end of the rental warehouse is provided with two sets of second metal contact sets. At least one set of the second metal contact sets is selectively connected to the charging station. At least one set of the first metal contact set on the treasure is electrically connected.
16. A power bank rental system includes a power bank and a rental terminal provided with a rental warehouse for placing the power bank, one of the power bank and the rental warehouse is provided with two sets of first metal contacts, and the other One set or two sets of second metal contact sets are set, so that when the power bank is placed in the rental warehouse, at least one set of the first metal contact sets selectively interacts with at least one set of the second metal contact sets. The metal contact group is electrically connected.
17. The power bank rental system according to claim 16, wherein the power bank is provided with two sets of first metal contact sets, and two sets of second metal contact sets are provided in the rental warehouse, and the two sets of first metal contacts The contact group and the two sets of second metal contact groups are respectively connected correspondingly.
18. The power bank rental system according to claim 16 or 17, wherein the first metal contact group and the second metal contact group both include charging contacts and read-write contacts.

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