Power bank

Abstract

The utility model discloses a power bank. The power bank comprises a charging interface and at least one charging circuit. The charging interface is used for being connected with external to-be-charged equipment, and the charging interface comprises a charging anode pin and a grounding pin; the charging circuits are connected in parallel, each charging circuit comprises a diode and at least one battery installation position, and each battery installation position is used for installing a battery in a removable mode. Each battery mounting position is correspondingly provided with a battery positive electrode connecting terminal used for being connected with a battery positive electrode and a battery negative electrode connecting terminal used for being connected with a battery negative electrode, and the battery positive electrode connecting terminal of the previous battery mounting position is connected to the battery negative electrode connecting terminal of the next battery mounting position; the battery cathode connecting terminal of the first battery installation position is used for being connected to a grounding pin, the battery anode connecting terminal of the last battery installation position is connected to the anode of a diode, and the cathode of the diode is used for being connected to a charging anode pin.

Description

Technical Field

[0001] The present application relates to the technical field of charging equipment, and in particular to a power bank. Background Art

[0002] Currently, most power banks have built-in energy storage batteries, which can charge other electrical devices (such as mobile phones) when their own energy storage batteries have power. However, once the energy storage batteries are exhausted, the power bank must first replenish its own power, which results in many cases being unable to meet the user's urgent need to charge electrical devices.

[0003] Therefore, a power bank is needed to at least partially solve the above problems. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of this application does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, the present application provides a power bank, which includes:

[0006] A charging interface, used to connect to an external device to be charged, the charging interface comprising a positive charging pin and a grounding pin; and

[0007] At least one charging circuit, the at least one charging circuit is connected in parallel with each other, each charging circuit includes a diode and at least one battery mounting position, each battery mounting position is used to removably install a battery, each battery mounting position is correspondingly provided with a battery positive connection terminal for connecting the positive electrode of the battery and a battery negative connection terminal for connecting the negative electrode of the battery, the battery positive connection terminal of the previous battery mounting position is connected to the battery negative connection terminal of the next battery mounting position, wherein the battery negative connection terminal of the first battery mounting position is used to connect to the ground pin, the battery positive connection terminal of the last battery mounting position is connected to the positive electrode of the diode, and the negative electrode of the diode is used to connect to the charging positive pin.

[0008] According to the present application, the power bank uses a battery as a power source, and can supply power to the device to be charged in a timely manner. Among them, the number of charging circuits and the number of batteries in each charging circuit can be set according to the electrical parameters of the power-consuming device.

[0009] Optionally,

[0010] The power bank includes multiple charging circuits, and / or

[0011] Each of the charging circuits includes a plurality of battery mounting positions.

[0012] further,

[0013] The power bank includes two charging circuits, and / or

[0014] Each of the charging circuits includes four battery mounting positions.

[0015] According to the present application, the number of batteries in each charging circuit determines the size of the charging voltage, and the number of charging circuits determines the size of the charging current. In the case of two charging circuits, each charging circuit including four batteries, the mobile phone can be basically fully charged.

[0016] Optionally, the charging interface is configured as a Type-C interface, and the positive charging pin is a VBUS pin of the Type-C interface.

[0017] According to this application, the charging interface is configured as a Type-C interface, which has good versatility.

[0018] Optionally, the power bank further includes a control chip, a power pin of the control chip is connected to the cathode of the diode, and a CC1 pin and a CC2 pin of the Type-C interface are connected to the control chip.

[0019] According to this application, the power bank communicates with external devices through a control chip.

[0020] Optionally, the power bank also includes a switching element, which includes a first connection end, a second connection end and a switch control end, and the switch control end is configured to control the on and off of the circuit between the first connection end and the second connection end, the first connection end and the second connection end are connected in series between the charging positive pin and the cathode of the diode, the first connection end is connected to the charging positive pin, the second connection end is connected to the cathode of the diode, and the switch control end is connected to the control chip.

[0021] According to the present application, the positive current path of the power bank is controlled by the control chip to ensure the electrical safety of the power bank.

[0022] Optionally, the switch element is configured as a P-channel field effect transistor, the switch control end is the gate of the P-channel field effect transistor, the first connection end is the drain of the P-channel field effect transistor, and the second connection end is the source of the P-channel field effect transistor.

[0023] According to the present application, the switch element is easy to control and has stable performance.

[0024] Optionally, the power bank further includes an indicator light, which is connected between the positive charging pin and the ground pin.

[0025] According to this application, the indicator light can indicate the working status of the power bank, which is convenient for users to use.

[0026] Optionally, the indicator light is configured as a light emitting diode, the positive pole of the light emitting diode is connected to the positive charging pin, and the negative pole of the light emitting diode is connected to the ground pin.

[0027] According to the present application, the indicator light has simple control, stable performance and low price.

[0028] Optionally, the power bank further comprises a main switch for common user operation, wherein the main switch is connected in series between the ground pin and the battery negative electrode connection terminal of the first battery installation position.

[0029] According to this application, the user operates the main switch to control the power bank to work or stop working. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The following drawings of the present application are used as a part of the present application for understanding the present application. The drawings show the implementation modes of the present application and the description thereof, and are used to explain the principle of the present application.

[0031] In the attached figure:

[0032] Figure 1 This is a schematic diagram of the appearance of a power bank according to a preferred embodiment of the present application;

[0033] Figure 2 for Figure 1 The three-dimensional schematic diagram of the power bank shown is when the cover is opened;

[0034] Figure 3 for Figure 1 The front view of the power bank shown is when the cover is opened;

[0035] Figure 4 for Figure 1 The circuit structure diagram of the power bank shown.

[0036] Description of reference numerals:

[0037] 10: Bin cover

[0038] 11: First compartment cover

[0039] 12: Second compartment cover

[0040] 20: Battery compartment

[0041] 21 / 21A / 21B / 21C / 21D: Battery installation position

[0042] 23 / 23A / 23B / 23C / 23D: Battery positive connection terminal

[0043] 24 / 24A / 24B / 24C / 24D: Battery negative terminal

[0044] 25 / 25A / 25B / 25C / 25D / 26: Rechargeable batteries

[0045] 27: First side

[0046] 28: Second side

[0047] 31: Circuit

[0048] 33: CC1 pin

[0049] 34: CC2 pin

[0050] 35: Ground pin

[0051] 36: VBUS pin

[0052] 38: Charging port

[0053] 39: Control chip

[0054] 50: Indicator light

[0055] 60: Main switch

[0056] 70: Charging circuit

[0057] 71: Diode

[0058] 81: Switching element

[0059] 82: Switch control terminal

[0060] 83: First connection end

[0061] 84: Second connection terminal

[0062] 100: Power Bank DETAILED DESCRIPTION

[0063] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features well known in the art are not described.

[0064] In order to thoroughly understand the present application, a detailed description will be provided in the following description. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. Obviously, the implementation of the embodiments of the present application is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other embodiments.

[0065] Ordinal numbers such as "first" and "second" cited in this application are merely identifiers and do not have any other meaning, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component". The use of the words "first", "second", and "third" does not indicate any order, and these words can be interpreted as names.

[0066] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in this application are for illustrative purposes only and are not limiting.

[0067] The present application provides a power bank, which uses a battery as a power source to charge electrical devices.

[0068] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings.

[0069] like Figures 1 to 3 As shown, in a preferred embodiment, the power bank 100 according to the present application includes a battery compartment 20 and a compartment cover 10. The battery compartment 20 is used to install a battery 25, and the compartment cover 10 is used to cover the battery compartment 20. Thus, the power bank 100 uses the battery 25 as a power source to power the electrical device. The compartment cover 10 can be pivotally connected to the battery compartment 20, for example, and can be rotated to expose or cover the battery compartment 20.

[0070] like Figure 2 As shown, at least one battery installation position 21 is provided in the battery compartment 20, and each battery installation position 21 is used to removably install a battery 25. Each battery installation position 21 is correspondingly provided with a battery positive connection terminal 23 for connecting the positive electrode of the battery 25 and a battery negative connection terminal 24 for connecting the negative electrode of the battery 25. It can be understood that the battery positive connection terminal 23 is also equivalent to the positive terminal of the battery 25, and the battery negative connection terminal 24 is also equivalent to the negative terminal of the battery 25.

[0071] Usually, the voltage of a battery 25 (dry cell) is 1.5V. In order to adapt to the charging voltage of the electrical device (such as a mobile phone), preferably, the battery compartment 20 is provided with multiple battery installation positions 21, that is, multiple batteries 25 can be installed. At the same time, multiple batteries 25 are connected in series, so as to provide a higher charging voltage for the electrical device. In the illustrated embodiment, 4 batteries 25 are connected in series to provide a charging voltage of about 6V. Figure 3 As shown, four battery mounting positions 21A, 21B, 21C and 21D are provided in the battery compartment 20, the first battery mounting position 21A has a battery positive connection terminal 23A and a battery negative connection terminal 24A, the second battery mounting position 21B has a battery positive connection terminal 23B and a battery negative connection terminal 24B, the third battery mounting position 21C has a battery positive connection terminal 23C and a battery negative connection terminal 24C, and the fourth battery mounting position 21D has a battery positive connection terminal 23D and a battery negative connection terminal 24D.

[0072] like Figure 4 As shown, multiple batteries 25, such as the first battery 25A (installed in the first battery mounting position 21A), the second battery 25B (installed in the second battery mounting position 21B), the third battery 25C (installed in the third battery mounting position 21C) and the fourth battery 25D (installed in the fourth battery mounting position 21D), form a battery pack 72 connected in series. In order to provide sufficient charging current, preferably, the power bank 100 is provided with multiple battery packs 72, and the multiple battery packs 72 are connected in parallel. Each battery pack 72 contains the same number of batteries. In the illustrated embodiment, the power bank 100 includes two battery packs 72, each battery pack 72 contains 4 batteries. Among them, one battery pack 72 contains 4 batteries 25, and the other battery pack 72 contains 4 batteries 26 (the battery 26 can be configured as the same battery as the battery 25).

[0073] like Figures 1 to 3 As shown, the battery compartment 20 has a first side 27 and a second side 28 that are oppositely arranged along the thickness direction DT of the power bank 100. The battery compartment 20 is constructed to include two compartments located at the first side 27 and the second side 28, respectively, and batteries can be installed in both compartments. The compartment cover 10 includes a first compartment cover 11 and a second compartment cover 12. The first compartment cover 11 is used to cover the battery compartment 20 at the first side 27 of the battery compartment 20. The second compartment cover 12 is used to cover the battery compartment 20 at the second side 28 of the battery compartment 20. Thus, the first group of batteries 25 and the second group of batteries 26 can be placed in the two compartments respectively, and the two groups of batteries are back to back, so that the power bank 100 has a compact structure.

[0074] Of course, according to the electrical parameters of the battery 25 and the electrical parameters of the electrical equipment, the power bank 100 can use one or more battery packs 72, and each battery pack 72 can include one or more batteries 25 (or batteries 26). The more batteries 25 are connected in series in the battery pack 72, the higher the charging voltage. The more battery packs 72 are connected in parallel, the greater the charging current. Those skilled in the art can design the structure of the power bank 100 according to the number and grouping of the batteries 25.

[0075] It can be understood that the power bank 100 has a circuit 31 (such as Figure 4 As shown in Figures 1 to 4 As shown, the power bank 100 is also provided with a charging interface 38 and at least one charging circuit 70 .

[0076] The charging interface 38 is used to connect to an external device to be charged. The charging interface 38 includes a positive charging pin 36 and a ground pin 35. Preferably, the charging interface 38 is configured as a Type-C interface. The positive charging pin is the VBUS pin of the Type-C interface.

[0077] The charging circuit 70 is arranged corresponding to the battery pack 72, that is, corresponding to each battery pack 72, the circuit 31 is provided with a charging circuit 70. The battery pack 72 is included in the charging circuit 70. Therefore, the above-mentioned battery positive connection terminal 23 and battery negative connection terminal 24 are both components of the charging circuit 70. The battery positive connection terminal 23 and the battery negative connection terminal 24 are closely connected with the battery mounting position 21, so that the battery mounting position 21 can also be regarded as a part of the charging circuit 70. Each charging circuit 70 also includes a diode 71. The diode 71 forms a series relationship with the battery 25 in the battery pack 72. Specifically, the positive electrode of the diode 71 is used to connect the charging positive pin 36, and the negative electrode of the diode 71 is used to connect the ground pin 35. The battery positive connection terminal 23 of each battery mounting position 21 is used to connect the charging positive pin 36, and the battery negative connection terminal 24 is used to connect the ground pin 35. The positive electrode of the diode 71, the negative electrode of the diode 71, the positive battery connection terminals 23 of all battery installation positions 21 and the negative battery connection terminals 24 of all battery installation positions 21 are connected in series with each other (or the diode 71 forms a series relationship with all battery installation positions 21).

[0078] For example, in the illustrated embodiment, all batteries 25 are connected in series and then connected in series with the diode 71. The battery negative connection terminal 24A of the first battery 25A is used to connect to the ground pin 35. The battery positive connection terminal 23D of the last battery 25D is connected to the positive electrode of the diode 71. The negative electrode of the diode 71 is used to connect to the positive charging pin 36. The battery positive connection terminal 23 of the previous battery 25 is connected to the battery negative connection terminal 24 of the next battery 25.

[0079] Therefore, in the circuit 31, due to the provision of the diode 71, the current direction can only flow from the battery 25 (or 26) to the charging interface 38, but not from the charging interface 38 to the battery 25 (or 26), so the battery 25 (or 26) will not be reversely charged, avoiding misoperation or failure to cause damage to the battery 25 (or 26). At the same time, during the discharge of multiple battery groups 72, there will be no situation where one part of the battery group 72 discharges to another part of the battery group 72, ensuring that all the power of the battery 25 (or 26) is used to provide to the external charging device, and also protecting the battery 25 (or 26).

[0080] The circuit 31 also includes a main switch 60 for user operation. The main switch 60 is connected in series between the ground pin 35 and the negative battery connection terminal 24A of the first battery installation position. That is, the main switch 60 is connected in series in the ground line. Figure 3 As shown, the main switch 60 is exposed from the outer surface of the battery compartment 20 so that the user can operate it. It can be understood that when the main switch 60 is turned on, the circuit 31 works and the battery 25 charges the external device; when the main switch 60 is turned off, the power bank 100 does not work.

[0081] The circuit 31 also includes a control chip 39. The power pin of the control chip 39 is connected to the cathode of the diode 71. The ground pin of the control chip 39 is used to connect the ground pin 35 of the charging interface 38. When the main switch 60 is turned on, multiple batteries 25 connected in series supply power to the control chip 39. The CC1 pin 33 and the CC2 pin 34 of the Type-C interface are connected to the control chip 39. The control chip 39 is configured as a UC2606 chip, for example, and the control chip 39 also has a CC1 pin and a CC2 pin. The CC1 pin 33 of the Type-C interface is connected to the CC1 pin of the control chip 39. The CC2 pin 34 of the Type-C interface is connected to the CC2 pin of the control chip 39. When the power bank 100 is working, the power bank 100 communicates with external devices through the CC1 pin and CC2 pin of the control chip 39.

[0082] The circuit 31 also includes a switch element 81. The switch element 81 includes a first connection terminal 83, a second connection terminal 84 and a switch control terminal 82. The switch control terminal 82 is configured to control the on and off of the circuit between the first connection terminal 83 and the second connection terminal 84. The first connection terminal 83 and the second connection terminal 84 are connected in series between the positive charging pin 36 and the cathode of the diode 71, the first connection terminal 83 is connected to the positive charging pin 36, and the second connection terminal 84 is connected to the cathode of the diode 71. The switch control terminal 82 is connected to the control chip 39 (for example, the switch pin SW of the UC2606 chip).

[0083] Specifically, the switch element 81 is configured as a P-channel field effect transistor, the switch control terminal 82 is the gate of the P-channel field effect transistor, the first connection terminal 83 is the drain of the P-channel field effect transistor, and the second connection terminal 84 is the source of the P-channel field effect transistor. When the switch 60 is connected, the control chip 39 works, and its switch pin SW outputs a conduction signal to the switch control terminal 82, the switch element 81 is turned on, and the current flows from the charging circuit 70 to the charging interface 38.

[0084] The circuit 31 also includes an indicator light 50. The indicator light 50 is connected between the positive charging pin 36 and the ground pin 35. When the switch 60 is connected, the positive charging pin 36 has a high level, and the indicator light 50 is lit, informing the user that the power bank 100 is in working condition. The indicator light 50 is configured as a light emitting diode, for example, with its positive electrode connected to the positive charging pin 36 and its negative electrode connected to the ground pin 35. It can be understood that the indicator light 50 is exposed from the outer surface of the power bank 100, or is set in a position that is easy to observe, so as to facilitate the user's use.

[0085] The processes and steps described in all the above preferred embodiments are only examples. Unless adverse effects occur, various processing operations can be performed in a sequence different from the sequence of the above processes. The sequence of steps in the above processes can also be increased, merged or deleted according to actual needs.

[0086] In understanding the scope of the present application, the term "comprising" and its derivatives as used herein are intended to be open terms, which specify the existence of the recorded features, elements, components, groups, wholes and / or steps, but do not exclude the existence of other unrecorded features, elements, components, groups, wholes and / or steps. This concept also applies to words with similar meanings, such as the terms "including", "having" and their derivatives.

[0087] The terms "attached" or "attached" as used herein include: a configuration where an element is directly secured to another element by directly securing the element to the other element; a configuration where an element is indirectly secured to another element by securing the element to an intermediate member which in turn is secured to the other element; and a configuration where one element is integral with the other element, i.e., one element is substantially a part of the other element. This definition also applies to words with similar meanings such as "connect," "connect," "couple," "mount," "bond," "fix," and their derivatives. Finally, terms of degree such as "substantially," "approximately," and "approximately" as used herein represent the amount of deviation that modifies the term such that the end result will not be significantly changed.

[0088] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present application. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present application. The features described herein in one embodiment may be applied to another embodiment individually or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0089] The present application has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present application to the described embodiments. In addition, it can be understood by those skilled in the art that the present application is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the present application, and these variations and modifications all fall within the scope of protection claimed by the present application.

Claims

1. A power bank, characterized in that: include: A charging interface, used to connect to an external device to be charged, the charging interface comprising a positive charging pin and a grounding pin; and At least one charging circuit, the at least one charging circuit is connected in parallel with each other, each charging circuit includes a diode and at least one battery mounting position, each battery mounting position is used to removably install a battery, each battery mounting position is correspondingly provided with a battery positive connection terminal for connecting the positive electrode of the battery and a battery negative connection terminal for connecting the negative electrode of the battery, the battery positive connection terminal of the previous battery mounting position is connected to the battery negative connection terminal of the next battery mounting position, wherein the battery negative connection terminal of the first battery mounting position is used to connect to the ground pin, the battery positive connection terminal of the last battery mounting position is connected to the positive electrode of the diode, and the negative electrode of the diode is used to connect to the charging positive pin.

2. The power bank according to claim 1, characterized in that: The power bank includes multiple charging circuits, and / or Each of the charging circuits includes a plurality of battery mounting positions.

3. The power bank according to claim 2, characterized in that: The power bank includes two charging circuits, and / or Each of the charging circuits includes four battery mounting positions.

4. The power bank according to claim 1, characterized in that: The charging interface is configured as a Type-C interface, and the positive charging pin is the VBUS pin of the Type-C interface.

5. The power bank according to claim 4, characterized in that: It also includes a control chip, a power pin of the control chip is connected to the cathode of the diode, and the CC1 pin and CC2 pin of the Type-C interface are connected to the control chip.

6. The power bank according to claim 5, characterized in that: It also includes a switching element, which includes a first connection end, a second connection end and a switch control end, and the switch control end is configured to control the on and off of the circuit between the first connection end and the second connection end, the first connection end and the second connection end are connected in series between the charging positive pin and the cathode of the diode, the first connection end is connected to the charging positive pin, the second connection end is connected to the cathode of the diode, and the switch control end is connected to the control chip.

7. The power bank according to claim 6, characterized in that: The switch element is configured as a P-channel field effect transistor, the switch control end is the gate of the P-channel field effect transistor, the first connection end is the drain of the P-channel field effect transistor, and the second connection end is the source of the P-channel field effect transistor.

8. The power bank according to claim 1, characterized in that: An indicator light is also included, and the indicator light is connected between the charging positive pin and the ground pin.

9. The power bank according to claim 8, characterized in that: The indicator light is configured as a light emitting diode, the positive electrode of the light emitting diode is connected to the positive charging pin, and the negative electrode of the light emitting diode is connected to the ground pin.

10. The power bank according to any one of claims 1 to 9, characterized in that: It also includes a main switch for user operation, wherein the main switch is connected in series between the ground pin and the battery negative electrode connection terminal of the first battery installation position.

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