Energy storage box

Abstract

According to the energy storage box provided by the utility model, the solar panel can be connected into the energy storage box, the mainboard of the energy storage box is provided with the control unit, the voltage monitoring circuit and the insertion detection circuit, and the problem that charging cannot be carried out in remote areas is effectively solved. Moreover, when the detection circuit is inserted to detect that the solar panel is connected with the energy storage box and the input voltage, detected by the control unit through the voltage monitoring circuit, of the solar panel is greater than the voltage, detected by the control unit, of the to-be-charged equipment connected into the plurality of output interfaces, the solar panel can charge the to-be-charged equipment. Therefore, the to-be-charged equipment can be directly supplied with power through the solar panel under the condition that the battery pack of the energy storage box is exhausted.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage equipment, and in particular relates to an energy storage box. Background Art

[0002] An energy storage box is a type of energy storage device that is pre-connected to a power source to store electrical energy and supplies the stored energy to external electrical equipment. The energy storage boxes on the market need to be connected to the mains to store electrical energy. They are bulky and have many charging restrictions, making them difficult to use in remote areas or outdoor areas that are not connected to the mains. The application scenarios are greatly limited and far from meeting the lifestyles of modern people. In addition, some related energy storage boxes have a single function and lack circuit protection, which results in a narrow application range of the energy storage boxes. Utility Model Content

[0003] The technical purpose of the utility model is to provide an energy storage box, aiming to solve the problem that the energy storage box in the related art has a single function and lacks circuit protection.

[0004] In order to solve the above technical problems, the utility model is implemented as follows: an energy storage box, comprising: a box body, a mainboard fixed in the box body, a battery pack fixed in the box body, a plurality of output interfaces arranged on the surface of the box body and electrically connected to the battery pack, and a solar panel input interface;

[0005] The solar panel input interface is used to electrically connect to the solar panel, and the output interface is used to connect to the device to be charged;

[0006] The mainboard includes a control unit, an insertion detection circuit and a voltage monitoring circuit;

[0007] The input end of the control unit is electrically connected to the output end of the solar panel input interface;

[0008] The input end of the insertion detection circuit is electrically connected to the output end of the solar panel input interface, and the output end of the insertion detection circuit is electrically connected to the input end of the control unit, so as to detect that the solar panel is electrically connected to the solar panel input interface;

[0009] The input end of the voltage monitoring circuit is electrically connected to the output end of the solar panel input interface, and the output end of the voltage monitoring circuit is electrically connected to the input end of the control unit, so as to detect the input voltage of the solar panel;

[0010] The output end of the control unit is electrically connected to the battery pack and the input ends of the output interfaces so as to detect the input voltage of the device to be charged.

[0011] Furthermore, the insertion detection circuit includes a first resistor, a second resistor and a transistor; the first end of the first resistor is connected to the output end of the solar panel input interface, the second end of the first resistor is connected to the first end of the second resistor, the second end of the second resistor is grounded, the second end of the second resistor is also connected to the base of the transistor, the emitter of the transistor is grounded, and the collector of the transistor is connected to the insertion detection pin of the control unit.

[0012] Furthermore, the voltage monitoring circuit includes a third resistor and a fourth resistor, the first end of the third resistor is connected to the output end of the solar panel input interface, the second end of the third resistor is connected to the first end of the fourth resistor and the voltage monitoring pin of the control unit, and the second end of the fourth resistor is grounded.

[0013] Furthermore, the mainboard also includes a USB2.0 charging circuit, and the output interface includes a USB2.0 output interface; the input end of the USB2.0 charging circuit is connected to the output end of the control unit and the output end of the battery pack, and the USB2.0 charging circuit is connected to the input end of the USB2.0 output interface.

[0014] Further, the USB2.0 charging circuit includes a buck conversion chip, the input end of the buck conversion chip is connected to the digital signal output end of the control unit, and the output end of the buck conversion chip is connected to the input end of the USB2.0 output interface;

[0015] The model of the step-down converter chip is IP6525S_EN.

[0016] Furthermore, the mainboard further includes an external battery charging circuit, and the output interface further includes a 12v DC output interface and an external battery output interface;

[0017] The input end of the external battery output interface is connected to the output end of the battery pack, the output end of the external battery output interface is connected to the input end of the external battery charging circuit, and the output end of the external battery charging circuit is connected to the input end of the control unit; the input end of the 12v DC output interface is connected to the output end of the control unit and the battery pack.

[0018] Furthermore, the external battery charging circuit includes an overcurrent protector, the input end of the external battery output interface is connected to the output end of the battery pack, the output end of the external battery output interface is connected to the first end of the overcurrent protector, and the second end of the overcurrent protector is connected to the input end of the control unit; the overcurrent protector is fixed to the outer surface of the box body.

[0019] Furthermore, the external battery charging circuit also includes an N-channel MOS tube, the gate of the N-channel MOS tube is connected to the output end of the battery pack, the drain of the N-channel MOS tube is connected to the output end of the external battery output interface, and the source of the N-channel MOS tube is connected to the first end of the overcurrent protector.

[0020] Furthermore, the energy storage box also includes a switch and a plurality of indicator lights, wherein the switch is fixed to the surface of the box and electrically connected to the main board, and each of the indicator lights is fixed to the surface of the box and electrically connected to the main board;

[0021] The indicator light includes a power indicator light and a charging indicator light. The power indicator light is used to display the power of the battery pack, and the charging indicator light is used to display the battery pack and / or whether it is in a charging state.

[0022] Furthermore, a fixing piece is arranged on the peripheral side of the box, and each of the output interfaces, the switch and the indicator lights are arranged on the peripheral side of the box, and are adjacent to or opposite to the side of the box where the fixing piece is located;

[0023] A handle assembly is arranged on the top of the box body.

[0024] Compared with the prior art, the energy storage box in the utility model has the following beneficial effects:

[0025] 1. Compared with the traditional energy storage box, the energy storage box in the utility model provides a solar panel input interface, which can quickly charge the energy storage box through the solar panel, effectively solving the problem of being unable to charge in remote areas;

[0026] Second, when the detection circuit is inserted to detect that the solar panel is connected to the energy storage box, and the input voltage of the solar panel detected by the control unit through the voltage monitoring circuit is greater than the voltage of the devices to be charged connected to the output interfaces detected by the control unit, the solar panel will charge the devices to be charged, thus avoiding the situation where the battery pack of the energy storage box is exhausted. The energy storage box can also function as a charging device in dim light, thus avoiding the energy storage box from freezing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the energy storage box in the embodiment of the utility model from a first perspective;

[0028] Figure 2 It is a second perspective schematic diagram of the overall structure of the energy storage box in the embodiment of the utility model;

[0029] Figure 3 It is an exploded view of the energy storage box in the embodiment of the utility model;

[0030] Figure 4It is a schematic diagram of the circuit principle of the energy storage box in the embodiment of the utility model;

[0031] Figure 5 yes Figure 4 A detailed schematic diagram of

[0032] Figure 6~Figure 10 It is a partial circuit diagram of the energy storage box in the embodiment of the utility model.

[0033] In the accompanying drawings, the reference numerals represent: 10, housing; 11, front shell; 12, rear shell; 13, battery holder; 14, fixing piece; 15, handle assembly; 20, main board; 21, insertion detection circuit; 22, control unit; 221, digital-to-analog conversion chip; 23, voltage monitoring circuit; 24, USB2.0 charging circuit; 241, buck conversion chip; 25, external battery charging circuit; 251, overcurrent protector; 252, connector; 253, N-channel MOS tube; 30, battery pack; 40, solar panel input interface; 50, output interface; 51, USB2.0 output interface; 52, 12v DC output interface; 53, external battery output interface; 60, power indicator light; 70, charging indicator light; 80, switch; 90, solar panel. DETAILED DESCRIPTION

[0034] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] Example:

[0038] See also Figures 1 to 10 In this embodiment, an energy storage box includes: a box body 10, a mainboard 20 fixed in the box body 10, a battery pack 30 fixed in the box body 10, a plurality of output interfaces 50 disposed on the surface of the box body 10 and electrically connected to the battery pack 30, and a solar panel input interface 40;

[0039] The solar panel input interface 40 is used to electrically connect to the solar panel 90, and the output interface 50 is used to connect to the device to be charged;

[0040] The main board 20 includes a control unit 22, an insertion detection circuit 21 and a voltage monitoring circuit 23;

[0041] The input end of the control unit 22 is electrically connected to the output end of the solar panel input interface 40;

[0042] The input end of the insertion detection circuit 21 is electrically connected to the output end of the solar panel input interface 40, and the output end of the insertion detection circuit 21 is electrically connected to the input end of the control unit 22, so as to detect that the solar panel 90 is electrically connected to the solar panel input interface 40;

[0043] The input end of the voltage monitoring circuit 23 is electrically connected to the output end of the solar panel input interface 40, and the output end of the voltage monitoring circuit 23 is electrically connected to the input end of the control unit 22, so as to detect the input voltage of the solar panel 90;

[0044] The output end of the control unit 22 is electrically connected to the battery pack 30 and the input ends of the plurality of output interfaces 50 for detecting the input voltage of the device to be charged.

[0045] Compared with the traditional energy storage box, the energy storage box in this embodiment provides a solar panel input interface 40, which can quickly charge the energy storage box through the solar panel 90, effectively solving the problem of being unable to charge in remote areas.

[0046] Furthermore, as long as the insertion detection circuit 21 detects that the solar panel 90 is connected to the energy storage box, and the input voltage of the solar panel 90 detected by the control unit 22 through the voltage monitoring circuit 23 is greater than the voltage of the devices to be charged connected to the output interfaces 50 detected by the control unit 22, the solar panel 90 will charge the devices to be charged, so that when the battery pack 30 of the energy storage box is exhausted, the devices to be charged can be powered directly by the solar panel 90.

[0047] Generally speaking, solar panels require sufficient light intensity to efficiently convert energy. The light intensity of the solar panel is 1000W / m 2 When the light intensity is above 200W / m, the energy conversion efficiency of the solar panel is the highest. The energy storage box in the related technology is used when the light intensity is lower than 200W / m 2 When the solar panel cannot obtain enough energy to provide to the energy storage box, the energy storage box system cannot work normally and crashes.

[0048] The utility model uses the maximum power point tracking (MPPT) technology to ensure that the solar panel 90 can convert light energy into electrical energy with the best efficiency. When the lighting conditions of the solar panel 90 are constantly changing, the output voltage and current of the solar panel 90 will also be constantly changing. The control unit 22 of the energy storage box in the utility model can monitor the output voltage and current of the solar panel through the voltage monitoring circuit 23, and support charging with changing sunlight, and dynamically adjust the voltage and current of the solar panel 90 according to the lighting conditions, so that the solar panel 90 always works at the maximum power point, effectively avoiding the crash of the energy storage box.

[0049] Specifically, Figure 3 As shown, the box body includes a front shell 11, a rear shell 12 and a battery fixing frame 13. The front shell 11 and the rear shell 12 enclose a receiving space, and the battery pack 30 is received in the receiving space. The battery pack 30 is screwed to the rear shell 12 through the battery fixing frame 13.

[0050] Furthermore, the insertion detection circuit 21 includes a first resistor, a second resistor and a transistor; the first end of the first resistor is connected to the output end of the solar panel input interface 40, the second end of the first resistor is connected to the first end of the second resistor, the second end of the second resistor is grounded, the second end of the second resistor is also connected to the base of the transistor, the emitter of the transistor is grounded, and the collector of the transistor is connected to the insertion detection pin of the control unit 22.

[0051] Specifically, the control unit 22 in the present invention is a digital-to-analog converter chip, model CSU8RP3119B, wherein DC_IN is the output terminal of the direct current power supply of the solar panel 90. The USB_CHECK pin of the digital-to-analog converter chip is an insertion detection pin.

[0052] like Figure 6 and Figure 7 As shown, the first resistor of the insertion detection circuit 21 is a resistor R71, the second resistor is R41, and the transistor is Q43.

[0053] The insertion detection circuit includes a resistor R71 (200K 1%), a resistor R41 (10K) and a transistor Q43 (model 3904). The first end of the resistor R71 is connected to DC_IN, the second end of the resistor R71 is connected to the first end of the resistor R41, the second end of the resistor R41 is grounded, and the second end of the resistor R71 is also connected to the base of the transistor Q43. The emitter of the transistor Q43 is grounded, and the collector is connected to the USB_CHECK pin of the chip.

[0054] When the solar panel 90 is not inserted into the energy storage box, there is no voltage on the resistor R71, the transistor Q43 is not turned on, and the USB_CHECK pin is in a high level state; when the solar panel 90 is inserted into the energy storage box, a sufficiently large voltage is applied to the resistor R71, the transistor Q43 is turned on, and the USB_CHECK pin is in a low level state, and the USB_CHECK pin monitors the connection between the solar panel 90 and the energy storage box; the resistor R41 and the transistor Q43 are connected in parallel to provide a stable bias path for the transistor Q43, reducing false triggering and noise.

[0055] Furthermore, the voltage monitoring circuit 23 includes a third resistor and a fourth resistor, the first end of the third resistor is connected to the output end of the solar panel input interface 40, the second end of the third resistor is connected to the first end of the fourth resistor and the voltage monitoring pin of the control unit 22, and the second end of the fourth resistor is grounded.

[0056] Specifically, the DC_V pin of the digital-to-analog converter chip is a voltage monitoring pin.

[0057] like Figure 6 and Figure 7 As shown, the third resistor is resistor R85 (100K 1%), the fourth resistor is resistor R86 (4.7K 1%), the first end of resistor R85 is connected to DC_IN, the second end of resistor R85 is connected to the first end of resistor R86, the second end of resistor R85 is also connected to the DC_V pin, and the second end of resistor R86 is grounded.

[0058] When the solar panel 90 is inserted into the energy storage box, current is input from DC_IN to the voltage monitoring circuit 23, and resistor R85 is connected to DC_IN as a reference voltage. Resistors R85 and R86 act as a voltage divider, and the DC_V pin of the digital-to-analog converter chip detects the voltage. The voltage monitoring circuit 23 uses this to monitor the input voltage of the solar panel 90.

[0059] Furthermore, if Figure 5As shown, the mainboard 20 also includes a USB2.0 charging circuit 24, and the output interface 50 includes a USB2.0 output interface 51; the input end of the USB2.0 charging circuit 24 is connected to the output end of the control unit 22 and the output end of the battery pack 30, and the USB2.0 charging circuit 24 is connected to the input end of the USB2.0 output interface 51.

[0060] Compared with the traditional energy storage box, the energy storage box in this embodiment has an additional USB output function, and can adapt to more types of devices to be charged.

[0061] Furthermore, if Figure 8 As shown, the USB2.0 charging circuit 24 includes a buck converter chip 241, the input end of the buck converter chip 241 is connected to the digital signal output end of the control unit 22, and the output end of the buck converter chip 241 is connected to the input end of the USB2.0 output interface 51;

[0062] The model of the step-down converter chip 241 is IP6525S_EN (U5).

[0063] Specifically, Figure 8 As shown, DC_VCC is a processed stable power supply voltage, and the input VIN pin of the buck converter chip 241 is connected to DC_VCC. The buck converter chip 241 steps down the power input by DC_VCC and outputs a DC voltage to the input end of the USB2.0 output interface 51 through USB2_VCC.

[0064] The DP pin of the buck converter chip 241 is connected to the USB_DP2 pin of the digital-to-analog converter chip 221 , and the DM2 pin of the buck converter chip 241 is connected to the USB_DM2 pin of the digital-to-analog converter chip 221 for transmitting data signals.

[0065] IP6525S_EN (U5) supports a variety of fast charging protocols, including DCP (applicable to Apple, Samsung and BC1.2) and Qualcomm QC2.0. In addition, IP6525S_EN (U5) has a wide input voltage range (5.2 V~32 V) and output voltage range (3 V~12 V), the maximum output power can reach 22.5 W, and it can automatically adjust the output voltage and current according to the identified fast charging protocol. Compared with the energy storage box in the related art, the energy storage box in the utility model has a wider range of use and can provide users with a more efficient and safe charging experience.

[0066] Furthermore, if Figure 5 and 10 As shown, the mainboard 20 also includes an external battery charging circuit 25, and the output interface 50 also includes a 12v DC output interface 52 and an external battery output interface 53;

[0067] The input end of the external battery output interface 53 is connected to the output end of the battery pack 30, the output end of the external battery output interface 53 is connected to the input end of the external battery charging circuit 25, and the output end of the external battery charging circuit 25 is connected to the input end of the control unit 22; the input end of the 12v DC output interface 52 is connected to the output end of the control unit 22 and the battery pack 30.

[0068] The energy storage box in this embodiment has various types of output interfaces 50 , which can supply power to an external battery through an external battery output interface 53 , and can also provide 12 V direct current to a device to be charged through a 12V DC output interface 52 .

[0069] Furthermore, if Figure 5 As shown, the external battery charging circuit 25 includes an overcurrent protector 251, the input end of the external battery output interface 53 is connected to the output end of the battery pack 30, the output end of the external battery output interface 53 is connected to the first end of the overcurrent protector 251, and the second end of the overcurrent protector 251 is connected to the input end of the control unit 22; the overcurrent protector 251 is fixed to the outer surface of the box 10.

[0070] In this embodiment, if Figure 2 As shown, the overcurrent protector 251 is specifically a 4A fuse, specifically, as Fig.10 In the circuit shown, the overcurrent protector 251 is installed in the external battery charging circuit 25 through the connector 252. The overcurrent protector 251 is used to limit overcurrent in the circuit. The second end of the overcurrent protector 251 is connected to the BATT_C pin of the digital-to-analog converter chip to prevent the current from exceeding a certain value, thereby avoiding damage to the circuit or battery.

[0071] Furthermore, if Fig.10 As shown, the external battery charging circuit 25 also includes an N-channel MOS transistor 253, the gate of the N-channel MOS transistor 253 is connected to the output end of the battery pack 30, the drain of the N-channel MOS transistor 253 is connected to the output end of the external battery output interface 53, and the source of the N-channel MOS transistor 253 is connected to the first end of the overcurrent protector 251.

[0072] Specifically, Fig.10 As shown, BT_VCC inputs voltage, the input end of the external battery output interface 53 is connected to the first end of BT_VCC, the gate of the N-channel MOS tube 253 is connected to the second end of BT_VCC, the output end of the external battery output interface 53 is connected to the drain of the N-channel MOS tube 253, the source of the N-channel MOS tube 253 is connected to the first end of the overcurrent protector 251, and the second end of the overcurrent protector 251 is connected to the BATT_C pin of the digital-to-analog converter chip.

[0073] The model of the N-channel MOS transistor 253 is HN30N03D. When a voltage is applied to the gate of the N-channel MOS transistor 253, current flows from the drain of the N-channel MOS transistor 253 to the source of the N-channel MOS transistor 253, the N-channel MOS transistor 253 is turned on, and the direction from the source of the N-channel MOS transistor 253 to the drain of the N-channel MOS transistor 253 is cut off. The above arrangement achieves the function of reverse charging protection for the battery pack 30 of the energy storage box.

[0074] Furthermore, if Figures 1 to 3 As shown, the energy storage box also includes a switch 80 and a plurality of indicator lights. The switch 80 is fixed to the surface of the box body 10 and is electrically connected to the main board 20. The indicator lights are fixed to the surface of the box body 10 and are electrically connected to the main board 20.

[0075] The indicator lights include a power indicator light 60 and a charging indicator light 70 . The power indicator light 60 is used to display the power level of the battery pack 30 , and the charging indicator light 70 is used to display whether the battery pack 30 and / or the device to be charged is in a charging state.

[0076] like Figure 6 As shown, the first end of the connection socket 252 of the switch 80 is connected to the ON / OFF pin of the digital-to-analog conversion chip 221, and the second end of the connection socket 252 of the switch 80 is connected to BATT_OUT, which is the output end of the battery pack 30. The opening and closing of the energy storage box can be controlled by the switch 80.

[0077] In this embodiment, the power indicator light 60 has a three-level power prompt function, which prompts low power, medium power and high power by displaying different numbers of indicator lights. Figure 6 As shown, the LED1 pin, LED2 pin and LED3 pin of the digital-to-analog conversion chip 221CSU8RP3119B (A261) are connected to the indicator light circuit. The indicator light circuit includes a plurality of light emitting diodes connected in parallel between the LED1 pin, the LED2 pin and the LED3 pin. The power level prompt can be realized by controlling the output signals of the LED1 pin, the LED2 pin and the LED3 pin to make the corresponding light emitting diodes emit light.

[0078] In this embodiment, the LED_ON pin of the digital-to-analog conversion chip 221CSU8RP3119B is connected to a light emitting diode, and according to the access of the solar panel 90, the light emitting diode LD5 is turned on and off by the output signal of the LED_ON pin, and LD5 is a charging indicator light 70. It should be known that there can be one or more charging indicator lights 70, and the charging indicator lights 70 can be set according to each output interface 50 and input interface to display the charging status of different interfaces and various devices.

[0079] The above arrangement enables the user to confirm the power level of the energy storage box and the connection status of the solar panel 90 during charging through the indicator light, so that the energy storage box can display the usage status, thereby improving the user experience.

[0080] It should be known that the indicator lights include but are not limited to the power indicator light 60 and the charging indicator light 70, and there is no limit to the number of the power indicator lights 60 and the charging indicator lights 70; in addition to being always on to indicate the power level and charging status, the power indicator lights 60 and the charging indicator lights 70 can also indicate in other ways such as the color or flashing frequency of the power indicator lights 60 and the charging indicator lights 70.

[0081] Furthermore, if Figures 1 to 3 As shown, a fixing member 14 is disposed on the peripheral side of the box body 10, and each output interface 50, switch 80 and each indicator light are disposed on the peripheral side of the box body 10, and are adjacent to or opposite to the side of the box body 10 where the fixing member 14 is located;

[0082] A handle assembly 15 is provided on the top of the box body 10 .

[0083] In this embodiment, a variety of placement methods of the energy storage box are provided. The energy storage box can be placed on the ground or mounted on the wall.

[0084] Specifically, Figures 1 to 3 As shown, a plurality of fixing members 14 are provided on the periphery of the box 10, and the fixing members 14 include ear-shaped fixing pieces and screws fixed to the periphery of the box 10, and the screws in the fixing members 14 pass through the through holes of the ear-shaped fixing pieces, so that the box 10 is fixedly connected to a vertical structure, such as a wall, a car, etc. The purpose of each output interface 50, the switch 80 and the indicator light being adjacent to or opposite to the side of the box 10 where the fixing member 14 is located is to enable the side of the box 10 provided with the fixing member 14 to be fixed to the vertical structure.

[0085] The energy storage box can also be hung on the fulcrums of various structures through the handle assembly 15 on the top of the box body 10, such as hanging on various structures such as walls, tree trunks, and carriages.

[0086] Furthermore, the battery pack 30 is a lithium battery.

[0087] Traditional energy storage boxes use lead-acid batteries as the battery pack 30. Lithium batteries have higher energy density than lead-acid batteries, and can store more energy at the same volume and weight. The lightweight nature of lithium batteries makes them more suitable for portable use scenarios of energy storage boxes. Lithium batteries have a longer lifespan than lead-acid batteries, can withstand more charge and discharge cycles, and are more environmentally friendly.

[0088] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy storage box, characterized in that: include: A box, a mainboard fixed in the box, a battery pack fixed in the box, a plurality of output interfaces arranged on the surface of the box and electrically connected to the battery pack, and a solar panel input interface; The solar panel input interface is used to electrically connect to the solar panel, and the output interface is used to connect to the device to be charged; The mainboard includes a control unit, an insertion detection circuit and a voltage monitoring circuit; The input end of the control unit is electrically connected to the output end of the solar panel input interface; The input end of the insertion detection circuit is electrically connected to the output end of the solar panel input interface, and the output end of the insertion detection circuit is electrically connected to the input end of the control unit, so as to detect that the solar panel is electrically connected to the solar panel input interface; The input end of the voltage monitoring circuit is electrically connected to the output end of the solar panel input interface, and the output end of the voltage monitoring circuit is electrically connected to the input end of the control unit, so as to detect the input voltage of the solar panel; The output end of the control unit is electrically connected to the battery pack and the input ends of the output interfaces so as to detect the input voltage of the device to be charged.

2. The energy storage box according to claim 1, characterized in that: The insertion detection circuit includes a first resistor, a second resistor and a transistor; the first end of the first resistor is connected to the output end of the solar panel input interface, the second end of the first resistor is connected to the first end of the second resistor, the second end of the second resistor is grounded, the second end of the second resistor is also connected to the base of the transistor, the emitter of the transistor is grounded, and the collector of the transistor is connected to the insertion detection pin of the control unit.

3. The energy storage box according to claim 1, characterized in that: The voltage monitoring circuit includes a third resistor and a fourth resistor, wherein a first end of the third resistor is connected to the output end of the solar panel input interface, a second end of the third resistor is connected to a first end of the fourth resistor and a voltage monitoring pin of the control unit, and a second end of the fourth resistor is grounded.

4. The energy storage box according to claim 1, characterized in that: The mainboard also includes a USB2.0 charging circuit, and the output interface includes a USB2.0 output interface; the input end of the USB2.0 charging circuit is connected to the output end of the control unit and the output end of the battery pack, and the USB2.0 charging circuit is connected to the input end of the USB2.0 output interface.

5. The energy storage box according to claim 4, characterized in that: The USB2.0 charging circuit comprises a buck conversion chip, the input end of the buck conversion chip is connected to the digital signal output end of the control unit, and the output end of the buck conversion chip is connected to the input end of the USB2.0 output interface; The model of the step-down converter chip is IP6525S_EN.

6. The energy storage box according to any one of claims 1 or 4, characterized in that: The mainboard also includes an external battery charging circuit, and the output interface also includes a 12v DC output interface and an external battery output interface; The input end of the external battery output interface is connected to the output end of the battery pack, the output end of the external battery output interface is connected to the input end of the external battery charging circuit, and the output end of the external battery charging circuit is connected to the input end of the control unit; the input end of the 12v DC output interface is connected to the output end of the control unit and the battery pack.

7. The energy storage box according to claim 6, characterized in that: The external battery charging circuit includes an overcurrent protector, the input end of the external battery output interface is connected to the output end of the battery pack, the output end of the external battery output interface is connected to the first end of the overcurrent protector, and the second end of the overcurrent protector is connected to the input end of the control unit; the overcurrent protector is fixed to the outer surface of the box body.

8. The energy storage box according to claim 7, characterized in that: The external battery charging circuit also includes an N-channel MOS transistor, the gate of the N-channel MOS transistor is connected to the output end of the battery pack, the drain of the N-channel MOS transistor is connected to the output end of the external battery output interface, and the source of the N-channel MOS transistor is connected to the first end of the overcurrent protector.

9. The energy storage box according to claim 1, characterized in that: The energy storage box also includes a switch and a plurality of indicator lights, wherein the switch is fixed to the surface of the box and electrically connected to the main board, and each of the indicator lights is fixed to the surface of the box and electrically connected to the main board; The indicator light includes a power indicator light and a charging indicator light. The power indicator light is used to display the power of the battery pack, and the charging indicator light is used to display the battery pack and / or whether it is in a charging state.

10. The energy storage box according to claim 9, characterized in that: A fixing piece is arranged on the peripheral side of the box body, and each of the output interfaces, the switch and the indicator lights are arranged on the peripheral side of the box body, and are adjacent to or opposite to the side of the box body where the fixing piece is located; A handle assembly is arranged on the top of the box body.

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