Storage battery maintenance device

Abstract

The utility model provides a storage battery maintenance device. The storage battery maintenance device comprises a shell, a solar panel and a charging controller, a light receiving area of the solar panel is arranged on the surface of the shell and is used for outputting electric energy; an output end of the solar panel is electrically connected to an input end of to-be-charged equipment; the charging controller comprises a control unit, a first voltage detection unit used for detecting the input voltage of the solar panel, a second voltage detection unit used for detecting the voltage of the to-be-charged device, and an insertion detection unit used for detecting the connection between the solar panel and the to-be-charged device. The output end of the solar panel is electrically connected to the input ends of the first voltage detection unit and the insertion detection unit, the output ends of the first voltage detection unit, the insertion detection unit and the second voltage detection unit are electrically connected to the input end of the control unit, and the input end of the second voltage detection unit is used for being electrically connected to the output end of to-be-charged equipment. The storage battery maintenance device is high in charging efficiency, supports charging protection, and is more portable to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic charging, and in particular relates to a battery maintainer. Background Art

[0002] Solar car battery maintainer is an environmentally friendly charging device that uses solar energy to charge 12V lead-acid batteries in motorcycles, cars, RVs, ships, etc. Its principle is to convert solar energy into electrical energy, and connect the lead-acid battery to charge through the external lead wires led out of the car battery maintainer. It can compensate for the loss of electrical energy in the car lead-acid battery and prevent the car lead-acid battery from discharging its power due to its self-discharge characteristics, thereby extending the battery life of the car lead-acid battery.

[0003] Currently, the solar battery maintainers on the market need to be connected to an independent charge management controller for use. Solar battery maintainers that are not connected to a charge management controller have single functions and poor safety, and are difficult to meet the needs of users. Utility Model Content

[0004] The technical purpose of the utility model is to provide a battery maintainer, aiming to solve the problem of single function of solar battery maintainers.

[0005] In order to solve the above technical problems, the utility model is implemented as follows: a battery maintainer, comprising: a housing, a solar panel, and a charging controller;

[0006] The light receiving area of ​​the solar panel is arranged on the surface of the housing and is used to output electric energy, and the output end of the solar panel is used to be electrically connected to the input end of the device to be charged;

[0007] The charging controller includes a control unit, a first voltage detection unit for detecting an input voltage of the solar panel, a second voltage detection unit for detecting a voltage of the device to be charged, and an insertion detection unit for detecting a connection between the solar panel and the device to be charged;

[0008] The output end of the solar panel is electrically connected to the input ends of the first voltage detection unit and the insertion detection unit, the output ends of the first voltage detection unit, the insertion detection unit and the second voltage detection unit are electrically connected to the input end of the control unit, and the input end of the second voltage detection unit is used to be electrically connected to the output end of the device to be charged.

[0009] Furthermore, the first voltage detection unit includes a first resistor and a second resistor, one end of the first resistor is connected to the output end of the solar panel, and the other end is connected to the first end of the second resistor and the first voltage detection pin of the control unit, and the second end of the second resistor is grounded.

[0010] Furthermore, the insertion detection unit includes a third resistor, a fourth resistor and a transistor; the first end of the third resistor is connected to the output end of the solar panel, the second end of the third resistor is connected to the first end of the fourth resistor, the second end of the fourth resistor is grounded, the second end of the third 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.

[0011] Furthermore, the second voltage detection unit includes a fifth resistor and a sixth resistor; one end of the fifth resistor is connected to the output end of the device to be charged, and the other end is connected to the first end of the sixth resistor and the second voltage detection pin of the control unit, and the second end of the sixth resistor is grounded.

[0012] Furthermore, the charging controller also includes a switching voltage stabilizing unit for voltage stabilization, the input end of the switching voltage stabilizing unit is electrically connected to the output end of the solar panel, the output end of the switching voltage stabilizing unit is electrically connected to the input end of the control unit, and the output end of the switching voltage stabilizing unit is used to be electrically connected to the input end of the device to be charged.

[0013] Furthermore, at least one indicator light is disposed on the surface of the shell, and an input end of each of the indicator lights is connected to an output end of the control unit.

[0014] Furthermore, the shell is in the shape of a flat plate having a first surface and a second surface, and the solar panel is fixed to at least one of the first surface or the second surface of the shell; the shell is provided with a plurality of through holes penetrating the first surface and the second surface along the thickness direction.

[0015] Furthermore, a connecting lead is led out from the side of the shell, one end of the connecting lead is electrically connected to the output end of the switching voltage stabilizing unit, and the other end of the connecting lead is used to electrically connect to the input end of the device to be charged.

[0016] Furthermore, at least part of the side walls of the shell are provided with a plurality of reinforcing ribs at intervals.

[0017] Furthermore, the solar panel is a high-efficiency crystalline silicon solar panel.

[0018] Compared with the prior art, the battery maintainer in the utility model has the following beneficial effects:

[0019] 1. The solar panel and charging controller are integrated into a design that is easy to use and does not require an external charging controller, thus reducing costs.

[0020] Second, it can detect the input voltage of the solar panel and the voltage of the device to be charged, which is highly safe and solves the defect of traditional battery maintainers that they have no protection settings and damage electrical equipment during use;

[0021] 3. Support charging under changing sunlight. When the detection unit is inserted and detects that the solar panel is connected to the device to be charged, and the first voltage detection unit detects that the input voltage of the solar panel is greater than the voltage of the device to be charged detected by the second voltage detection unit, the solar panel will charge the device to be charged, thus avoiding the battery maintainer from freezing in dim light. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the battery maintainer in the embodiment of the utility model;

[0023] Figure 2 This is a module block diagram of a battery maintainer in an embodiment of the utility model;

[0024] Figure 3 yes Figure 2 The detailed module block diagram of the battery protector;

[0025] Figure 4 yes Figure 3 The detailed module block diagram of the battery protector;

[0026] Figure 5 It is a circuit diagram of a battery maintainer in an embodiment of the utility model.

[0027] In the accompanying drawings, the various reference numerals represent: 10, outer shell; 11, surface shell; 12, bottom shell; 13, reinforcing ribs; 10a, through hole; 20, solar panel; 30, charging controller; 31, control unit; 32, first voltage detection unit; 33, insertion detection unit; 34, second voltage detection unit; 35, switching voltage stabilizing unit; 40, connecting lead; 50, indicator light; 60, device to be charged. DETAILED DESCRIPTION

[0028] 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.

[0029] 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.

[0030] 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.

[0031] Example:

[0032] See also Figures 1 to 5 In this embodiment, a battery maintainer includes: a housing 10, a solar panel 20, and a charge controller 30;

[0033] The light receiving area of ​​the solar panel 20 is arranged on the surface of the housing 10 and is used to output electric energy. The output end of the solar panel 20 is used to be electrically connected to the input end of the device to be charged 60;

[0034] The charging controller 30 includes a control unit 31, a first voltage detection unit 32 for detecting an input voltage of the solar panel 20, a second voltage detection unit 34 for detecting a voltage of the device to be charged 60, and an insertion detection unit 33 for detecting a connection between the solar panel 20 and the device to be charged 60;

[0035] The output end of the solar panel 20 is electrically connected to the input ends of the first voltage detection unit 32 and the insertion detection unit 33, the output ends of the first voltage detection unit 32, the insertion detection unit 33 and the second voltage detection unit 34 are electrically connected to the input end of the control unit 31, and the input end of the second voltage detection unit 34 is used to be electrically connected to the output end of the device to be charged 60.

[0036] Specifically, Figure 5As shown, in this embodiment, the control unit 31 is a single chip microcomputer (MCU) of model NY8B062DS8, wherein BAT is the positive pole of the power supply of the device to be charged 60, and DC_IN is the output end of the DC power supply of the solar panel 20. The chip pins VIN_C and BAT_C are voltage detection pins, which are respectively connected to the first voltage detection unit 32 and the second voltage detection unit 34, and the chip pin VIN_DET is an insertion detection pin.

[0037] In this embodiment, on the one hand, the solar panel 20 and the charging controller 30 are integrated, which is convenient to use, does not require an external charging controller 30, has a built-in charging management and charging protection function, and reduces costs;

[0038] On the other hand, the charging controller 30 can detect the input voltage of the solar panel 20 and the voltage of the device to be charged 60, which is highly safe and solves the defect that the traditional battery maintainer has no protection settings and damages the electrical equipment during use;

[0039] Finally, it supports charging under changing sunlight conditions. When the detection unit 33 is inserted and detects that the connection port is connected to the device to be charged 60, and the first piezoelectric detection unit detects that the input voltage of the solar panel 20 is greater than the voltage of the device to be charged 60 detected by the second voltage detection unit 34, the solar panel 20 will charge the device to be charged 60, thereby avoiding the battery maintainer from freezing in dim light.

[0040] Furthermore, the first voltage detection unit 32 includes a first resistor and a second resistor, one end of the first resistor is connected to the output end of the solar panel 20, and the other end is connected to the first end of the second resistor and the first voltage detection pin of the control unit 31, and the second end of the second resistor is grounded.

[0041] Specifically, in this embodiment, Figure 5 As shown, the first resistor is resistor R16, the second resistor is resistor R17, and the first voltage detection pin is VIN_C.

[0042] The first voltage detection unit 32 includes a resistor R16 (100K 1%) and a resistor R17 (10K 1%), one end of the resistor R16 is connected to DC_IN, the other end is connected to the first end of R17 and the chip pin VIN_C, and the second end of R17 is grounded. When the solar panel 20 is inserted into the device to be charged 60, DC_IN inputs a DC power supply to the first voltage detection unit 32, the resistor R16 is connected to DC_IN as a reference voltage, R16 and R17 divide the reference voltage, and the VIN_C pin is used as a measurement point to detect the voltage, and the first voltage detection unit 32 detects the input voltage of the solar panel 20.

[0043] Furthermore, the insertion detection unit 33 includes a third resistor, a fourth resistor and a transistor; the first end of the third resistor is connected to the output end of the solar panel 20, the second end of the third resistor is connected to the first end of the fourth resistor, the second end of the fourth resistor is grounded, the second end of the third 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 20.

[0044] In this embodiment, Figure 5 As shown, the third resistor is resistor R18, the fourth resistor is resistor R19, the transistor is Q72, and the insertion detection pin is VIN_DET.

[0045] The insertion detection unit 33 includes a resistor R18 (1K 1%), a resistor R19 (100K 1%) and a transistor Q72 (model 3904), wherein a first end of the resistor R18 is connected to DC_IN, a second end of the resistor R18 is connected to a first end of the resistor R19, a second end of the resistor R19 is grounded, a second end of the resistor R18 is connected to a base of the transistor Q72, an emitter of the transistor Q72 is grounded, and a collector is connected to a VIN_DET pin of the chip.

[0046] When the solar panel 20 is not inserted into the device to be charged 60, there is no voltage on the resistor R18, the transistor Q72 is not turned on, and the VIN_DET pin is in a high level state; when the solar panel 20 is inserted into the device to be charged 60, a sufficiently large voltage is applied to the resistor R18, the transistor Q76 is turned on, and the VIN_DET pin is in a low level state, and the insertion detection unit 33 detects that the solar panel 20 is connected to the device to be charged 60; the resistor R19 is connected in parallel with the transistor Q72 to provide a stable bias path for the transistor Q72, thereby reducing false triggering and noise.

[0047] Furthermore, the second voltage detection unit 34 includes a fifth resistor and a sixth resistor; one end of the fifth resistor is connected to the output end of the charging device 60, and the other end is connected to the first end of the sixth resistor and the second voltage detection pin of the control unit 31, and the second end of the sixth resistor is grounded.

[0048] In this embodiment, Figure 5 As shown, the fifth resistor is R14, the sixth resistor is R15, and the second voltage detection pin is the chip pin BAT_C.

[0049] The second voltage detection unit 34 includes a resistor R14 (499K 1%) and a resistor R15 (100K 1%). One end of the resistor R14 is connected to BAT, and the other end is connected to the first end of R15 and the chip pin BAT_C. The second end of R15 is grounded. When the solar panel 20 is inserted into the device to be charged 60, the current is input from the BAT interface to the second voltage detection unit 34. The resistor R14 is connected to the BAT interface as a reference voltage. The resistors R14 and R15 play a voltage dividing role. The pin BAT_C detects the voltage. The second voltage detection unit 34 uses this to detect the power supply voltage of the device to be charged 60.

[0050] Furthermore, if Figure 3 As shown, the charging controller 30 also includes a switching voltage stabilizing unit 35 for voltage stabilization, the input end of the switching voltage stabilizing unit 35 is electrically connected to the output end of the solar panel 20, the output end of the switching voltage stabilizing unit 35 is electrically connected to the input end of the control unit 31, and the output end of the switching voltage stabilizing unit 35 is used to be electrically connected to the input end of the device to be charged 60.

[0051] Specifically, Figure 5 As shown, the output end of the switching voltage regulator unit 35 is connected to the PWM pin of the chip, VIN+ / VIN- is the positive and negative ports of the input voltage of the solar panel 20, and the voltage passing through the switching voltage regulator unit 35 is regulated by PWM (pulse width modulation); BATT_OUT is the output end of the device to be charged 60, and the output end of the switching voltage regulator unit 35 is connected to the BATT_OUT interface. When the power of the device to be charged 60 is exhausted or fully charged, the solar panel 20 can continuously trickle power the device to be charged 60.

[0052] With such a configuration, a small pulse current is used to trickle charge the device to be charged 60, thereby ensuring the safety and reliability of the charging process, compensating for the capacity loss caused by self-discharge of the power supply of the device to be charged 60 after it is fully charged, and extending the service life of the device to be charged 60.

[0053] Furthermore, if Figure 1 As shown, at least one indicator light 50 is disposed on the surface of the housing 10 , and each indicator light 50 is electrically connected to the charging controller 30 .

[0054] like Figure 1 As shown, the indicator light 50 can be used to display the charging status or the power saturation status. The battery maintainer is provided with a charging status indicator light 50, which is convenient for the user to observe the power status of the device to be charged 60, and can better protect and extend the service life of the battery without the need for additional power supply.

[0055] Furthermore, if Figures 2~5 As shown, the input end of each indicator light 50 is connected to the output end of the control unit 31 .

[0056] Specifically, Figure 5 As shown, the circuit of the indicator light 50 is composed of a resistor, a light emitting diode and a plurality of LEDs connected in series. One end of the circuit of the indicator light 50 is grounded, and the other end is electrically connected to the LED pin of the chip.

[0057] Furthermore, if Figure 1 As shown, the housing 10 is in the shape of a flat plate having a first surface and a second surface, and the solar panel 20 is fixed to at least one of the first surface or the second surface of the housing 10; the housing 10 is provided with a plurality of through holes 10a penetrating the first surface and the second surface in the thickness direction.

[0058] It should be understood that both the first and second surfaces of the housing 10 can expose light-transmitting areas, and the solar panel 20 can be fixed on both surfaces of the housing 10, or only on one surface. Specifically, the housing 10 includes a bottom shell 12 and a surface shell 11 that are fastened together, and the solar panel 20 is flat and fixed between the bottom shell 12 and the surface shell 11. The solar panel 20 has a light-receiving area facing the surface shell 11, and the surface shell 11 has a partial opening corresponding to the light-receiving area.

[0059] like Figure 1 As shown, the front shell 11 and the bottom shell 12 cleverly fix the solar panel 20. The front shell 11 fixes the periphery of the solar panel 20, and the bottom shell 12 surrounds the side of the solar panel 20 opposite to the light-receiving area, both of which play a good protective role on the solar panel 20.

[0060] Preferably, a plurality of through holes 10a are arranged at intervals on the inner edge of the housing 10. Specifically, in this embodiment, through holes 10a are provided at the four corners of the flat housing 10 along the thickness direction. Each through hole 10a is preferably as follows: Figure 1 The gourd hole or airplane hole shown is convenient for fixing to different equipment by screws. It can be placed flat, hung or fixed at a certain angle. It can be widely used in various application scenarios such as cars, campers, yachts and motorcycles.

[0061] In other embodiments, the through hole 10a may also be a circular hole, a triangular hole, an airplane hole, or a through hole 10a in other shapes.

[0062] Furthermore, a connecting lead 40 is led out from the side of the housing 10 , one end of the connecting lead 40 is electrically connected to the output end of the switching voltage stabilizing unit 35 , and the other end of the connecting lead 40 is used to be electrically connected to the input end of the device to be charged 60 .

[0063] like Figure 1As shown, the connecting lead 40 leads out the output end of the solar panel 20 and is used to be inserted into the device to be charged 60 so that the battery maintainer is connected to the device to be charged 60 for charging. The device to be charged 60 can be quickly connected, which is more convenient to use.

[0064] Furthermore, at least part of the side walls of the housing 10 are provided with a plurality of reinforcing ribs 13 at intervals.

[0065] like Figure 1 As shown, a plurality of reinforcing ribs 13 are arranged at intervals on the side of the housing 10 where the connecting lead 40 is not led out. On the one hand, the reinforcing ribs 13 increase the structural strength of the battery maintainer, making the battery maintainer better suitable for outdoor and field environments. On the other hand, the reinforcing ribs 13 are arranged on the side of the housing 10. The concave-convex structure formed by the plurality of reinforcing ribs 13 increases the friction when the user holds the battery maintainer, making it easy to carry.

[0066] Furthermore, if Figure 1 As shown, the solar panel 20 is a high-efficiency crystalline silicon solar panel 20 .

[0067] Specifically, the high-efficiency crystalline silicon solar panel 20 includes a portion of glass, EVA, a single crystal cell and a backplane, and is formed by special high-temperature lamination. In this embodiment, the high-efficiency crystalline silicon solar panel 20 is edge-cut and packaged and fixed to the housing 10. The solar panel 20 can withstand hail with a diameter of 25 mm and a speed of 23 meters per second without surface damage, and can be used in a variety of outdoor, open-air and field occasions, with high reliability and strong structural strength.

[0068] 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. A battery maintainer, characterized in that: include: Housing, solar panels, charge controller; The light receiving area of ​​the solar panel is arranged on the surface of the housing and is used to output electric energy, and the output end of the solar panel is used to be electrically connected to the input end of the device to be charged; The charging controller includes a control unit, a first voltage detection unit for detecting an input voltage of the solar panel, a second voltage detection unit for detecting a voltage of the device to be charged, and an insertion detection unit for detecting a connection between the solar panel and the device to be charged; The output end of the solar panel is electrically connected to the input ends of the first voltage detection unit and the insertion detection unit, the output ends of the first voltage detection unit, the insertion detection unit and the second voltage detection unit are electrically connected to the input end of the control unit, and the input end of the second voltage detection unit is used to be electrically connected to the output end of the device to be charged.

2. The battery maintainer according to claim 1, characterized in that: The first voltage detection unit includes a first resistor and a second resistor, one end of the first resistor is connected to the output end of the solar panel, the other end is connected to the first end of the second resistor and the first voltage detection pin of the control unit, and the second end of the second resistor is grounded.

3. The battery maintainer according to claim 1, characterized in that: The insertion detection unit includes a third resistor, a fourth resistor and a transistor; the first end of the third resistor is connected to the output end of the solar panel, the second end of the third resistor is connected to the first end of the fourth resistor, the second end of the fourth resistor is grounded, the second end of the third 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.

4. The battery maintainer according to claim 1, characterized in that: The second voltage detection unit includes a fifth resistor and a sixth resistor; one end of the fifth resistor is connected to the output end of the device to be charged, and the other end is connected to the first end of the sixth resistor and the second voltage detection pin of the control unit, and the second end of the sixth resistor is grounded.

5. The battery maintainer according to claim 1, characterized in that: The charging controller also includes a switching voltage stabilizing unit for voltage stabilization, wherein the input end of the switching voltage stabilizing unit is electrically connected to the output end of the solar panel, the output end of the switching voltage stabilizing unit is electrically connected to the input end of the control unit, and the output end of the switching voltage stabilizing unit is used to be electrically connected to the input end of the device to be charged.

6. The battery maintainer according to claim 2, characterized in that: At least one indicator light is arranged on the surface of the shell, and the input end of each indicator light is connected to the output end of the control unit.

7. The battery maintainer according to claim 2, characterized in that: The shell is in the shape of a flat plate having a first surface and a second surface, and the solar panel is fixed to at least one of the first surface or the second surface of the shell; the shell is provided with a plurality of through holes penetrating the first surface and the second surface in the thickness direction.

8. The battery maintainer according to claim 5, characterized in that: A connecting lead is led out from the side of the shell, one end of the connecting lead is electrically connected to the output end of the switching voltage stabilizing unit, and the other end of the connecting lead is used to be electrically connected to the input end of the device to be charged.

9. The battery maintainer according to claim 6, characterized in that: At least part of the side walls of the shell are provided with a plurality of reinforcing ribs at intervals.

10. The battery maintainer according to any one of claims 1 to 9, characterized in that: The solar panel is a high-efficiency crystalline silicon solar panel.

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