Super capacitor slow charging circuit and super capacitor slow charging device

Abstract

The utility model discloses a super capacitor slow charging circuit and a super capacitor slow charging device. The super capacitor slow charging circuit comprises a pre-charging module and a direct charging module, the pre-charging module comprises a first contactor, the first contactor comprises a first coil and a first normally open contact, the first normally open contact is closed when the first coil is powered on, and the first normally open contact is connected with a pre-charging resistor in series; the pre-charging resistor is electrically connected with the storage battery and the super capacitor through a first normally open contact, the direct charging module comprises a second contactor, the second contactor comprises a second coil and a second normally open contact, the second normally open contact is closed when the voltage detected by the second coil reaches a preset voltage, and the second normally open contact is connected with the pre-charging resistor in parallel. According to the utility model, slow charging can be carried out on the super capacitor, a relatively large discharge phenomenon during connection is avoided, a binding post of a storage battery is prevented from being damaged, the safety can be improved, and injury to operators is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of charging devices, and more specifically, to a supercapacitor slow charging circuit and a supercapacitor slow charging device. Background Art

[0002] In newly produced mobile power stations, supercapacitors and batteries need to be used in parallel. The voltage of a brand new supercapacitor is zero, and the voltage of the battery is 24V. The voltage difference between the two is large, so a large voltage difference discharge will occur when connected in parallel.

[0003] The initial wiring process of existing supercapacitors is very dangerous. When connected in parallel with the unit battery, a large discharge phenomenon will occur, which can easily damage the battery terminals and cause harm to the operator. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the present invention innovatively provides a supercapacitor slow charging circuit and a supercapacitor slow charging device, which can solve the technical problem in the existing technology that the supercapacitor and the battery are easily discharged when they are first connected.

[0005] In order to achieve the above technical objectives, the first aspect of the present invention discloses a supercapacitor slow charging circuit for connecting a supercapacitor and a battery to charge the supercapacitor, comprising: a pre-charging module and a direct charging module.

[0006] The pre-charging module includes a first contactor, which includes a first coil and a first normally open contact. The two terminals of the first coil are respectively used to connect the positive electrode and the negative electrode of the battery. When the first coil is energized, the first normally open contact is closed.

[0007] The first normally open contact is connected in series with a pre-charging resistor, and the pre-charging resistor is electrically connected to the battery and the supercapacitor via the first normally open contact.

[0008] The direct charging module includes a second contactor, which includes a second coil and a second normally open contact. The two terminals of the second coil are respectively used to connect the positive electrode and the negative electrode of the supercapacitor. When the voltage at the terminal of the second coil reaches a preset voltage, the second normally open contact is closed.

[0009] The second normally open contact is connected in parallel with the pre-charging resistor.

[0010] Furthermore, a first terminal and a second terminal are respectively provided at both ends of the first coil, wherein the first terminal is used to connect to the positive pole of the battery, and the second terminal is used to connect to the negative pole of the battery.

[0011] Furthermore, the pre-charging module also includes a control switch component, and the control switch component is connected in series with the first coil.

[0012] Furthermore, the switch assembly includes a start switch and an emergency stop switch.

[0013] Furthermore, a third terminal and a fourth terminal are respectively provided at both ends of the second coil, wherein the third terminal is connected to the negative electrode of the supercapacitor, and the fourth terminal is connected to the positive electrode of the supercapacitor.

[0014] Two ends of the pre-charging resistor are connected to the second terminal and the third terminal respectively.

[0015] Furthermore, the first terminal, the second terminal, the third terminal and the fourth terminal are all provided with a wiring clip.

[0016] Furthermore, the resistance of the pre-charging resistor is 30Ω.

[0017] Furthermore, the preset voltage is 24V.

[0018] In a second aspect, the present invention discloses a supercapacitor slow-charging device, comprising the supercapacitor slow-charging circuit described above.

[0019] The third side of the present invention discloses a supercapacitor slow charging device, comprising a control panel and the supercapacitor slow charging circuit. The control panel is provided with a closing button and a disconnecting button. The closing button is connected to the start switch, and the disconnecting button is connected to the emergency stop switch.

[0020] The control panel is also provided with a DC voltage meter and a pre-charge current meter.

[0021] The beneficial effects of the utility model are:

[0022] The supercapacitor slow-charging circuit of the utility model can be used for the first parallel connection of a supercapacitor and a battery, especially the parallel connection of a supercapacitor and a battery in a power station. It can slowly charge the supercapacitor to avoid large discharge during connection, avoid damage to the battery terminals, and improve safety to avoid harm to operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a slow-charging circuit of a supercapacitor according to an embodiment of the present invention is shown;

[0024] Figure 2 A schematic diagram of a control panel of a supercapacitor slow-charging device according to an embodiment of the present invention is shown;

[0025] Figure 3A schematic diagram of a supercapacitor slow-charging circuit and a connection circuit between a supercapacitor and a battery is shown in an embodiment of the present invention.

[0026] In the figure,

[0027] 11. First coil; 12. First normally open contact; 13. Start switch; 14. Emergency stop switch; 21. Second coil; 22. Second normally open contact; 3. Pre-charge resistor; 4. Supercapacitor; 5. Battery. DETAILED DESCRIPTION

[0028] The supercapacitor slow charging circuit and the supercapacitor slow charging device provided by the present invention are explained and illustrated in detail below in conjunction with the drawings in the specification.

[0029] The supercapacitor slow-charging circuit and supercapacitor slow-charging device provided by the utility model can be used for the first parallel connection of a supercapacitor with a battery, especially the parallel connection of a supercapacitor and a battery in a power station. The supercapacitor can be slowly charged to avoid large discharge during connection, thereby avoiding damage to the battery terminals, improving safety, and preventing injuries to operators. The utility model is described in detail below with reference to specific embodiments:

[0030] In a first aspect, the present invention provides a supercapacitor slow-charging circuit for connecting a supercapacitor and a battery to charge the supercapacitor, comprising: a pre-charging module and a direct-charging module. The pre-charging module is used to pre-charge the supercapacitor, and when the voltage of the supercapacitor reaches a preset voltage, the direct-charging module is started to charge until charging is completed.

[0031] In some embodiments, as Figure 1 、 Figure 3 As shown, the pre-charging module includes a first contactor, which includes a first coil 11 and a first normally open contact 12. The two terminals of the first coil 11 are respectively used to connect to the positive and negative poles of the battery 5. When the first coil 11 is energized, the first normally open contact 12 is closed. The first normally open contact 12 is connected in series with the pre-charging resistor 3, and the pre-charging resistor 3 is electrically connected to the battery 5 and the supercapacitor 4 via the first normally open contact 12. Optionally, the pre-charging resistor 3 is composed of a resistance wire with a resistance of 30Ω, which is used to reduce the charging current in the pre-charging stage to avoid excessive initial charging current.

[0032] Optionally, a first terminal and a second terminal are provided at each end of the first coil 11, the first terminal being used to connect to the positive electrode of the battery 5, and the second terminal being used to connect to the negative electrode of the battery 5. When the first coil 11 is connected to the positive and negative electrodes of the battery 5, the first normally open contact 12 can be controlled to close, thereby conducting the circuit where the pre-charging resistor 3 is located, allowing the battery 5 to pre-charge the supercapacitor 4. The first end of the pre-charging resistor 3 is connected to the first normally open contact 12, and the first normally open contact 12 is connected to the first connection end.

[0033] In some embodiments, the pre-charge module further includes a control switch assembly connected in series with the first coil 11. Optionally, the switch assembly includes a start switch 13 and an emergency stop switch 14. After the first and second terminals are connected to the terminals of the battery 5, closing the start switch 13 connects the first coil 11 to the battery 5. The emergency stop switch 14 is a normally closed switch that can be used to disconnect the circuit in an emergency, such as a short circuit caused by a wiring error.

[0034] Optionally, both the first terminal and the second terminal are connected to a terminal clip, which is preferably a quick spring clip that can be easily and quickly connected to the terminal post of the battery 5.

[0035] In some embodiments, the direct charging module includes a second contactor, which includes a second coil 21 and a second normally open contact 22. The two terminals of the second coil 21 are respectively used to connect the positive and negative poles of the supercapacitor 4. When the terminal voltage of the second coil 21 reaches a preset voltage, the first normally open contact 12 is closed, and the second normally open contact 22 is connected in parallel with the pre-charging resistor 3. Optionally, the second normally open contact 22 is connected in parallel with the pre-charging resistor 3 and the first normally open contact 12.

[0036] Optionally, a third terminal and a fourth terminal are provided at both ends of the second coil 21, wherein the third terminal is connected to the negative electrode of the supercapacitor 4, the fourth terminal is connected to the positive electrode of the supercapacitor 4, and the two ends of the pre-charging resistor 3 are connected to the second terminal and the third terminal, respectively. Optionally, both the third terminal and the fourth terminal are connected to a terminal clip, which is preferably a quick spring clip that can be easily and quickly connected to the terminal of the supercapacitor 4.

[0037] Optionally, the preset voltage value is 24V, that is, when the voltage across the second coil 21 reaches 24V, the second normally open contact 22 is closed, and the current no longer flows through the pre-charging resistor 3 to charge the supercapacitor 4, and can be charged directly until the charging is completed. Optionally, the voltage range of the second coil 21 is between 85%-110%, that is, when the voltage of the supercapacitor 4 reaches 0.85 times of 24V, the relay is activated, and when it reaches the critical point of 0.85 times, the second contactor will automatically pre-close.

[0038] In a second aspect of the present invention, a supercapacitor 4 slow-charging device is provided, comprising the above-mentioned supercapacitor 4 slow-charging circuit. Optionally, the supercapacitor 4 slow-charging device comprises, Figure 2As shown, a closing button and an opening button are provided on the control panel. The closing button is connected to the start switch 13, and the opening button is connected to the emergency stop switch 14. A DC voltmeter and a pre-charge ammeter are also provided on the control panel. The DC voltmeter is used to display the voltage of the supercapacitor 4, and the pre-charge ammeter is used to display the current when the supercapacitor 4 is pre-charged, so that the operator can observe the charging status of the supercapacitor 4 conveniently.

[0039] In some embodiments, the supercapacitor 4 slow-charging device is used for the initial parallel connection of supercapacitors 4 and batteries 5 in a power station. Optionally, two supercapacitors 4 are connected in parallel and two batteries 5 are connected in series to form a battery pack. First, the two supercapacitors 4 are connected in parallel and the two batteries are connected in series. Then, the positive electrode of the parallel supercapacitors 4 is connected to the positive electrode of the series battery pack.

[0040] The first terminal of the slow-charging device of the supercapacitor 4 is connected to the positive electrode of one of the batteries 5, and the second terminal is connected to the negative electrode of the battery pack. Optionally, the first terminal and the second terminal are connected to the same battery 5. The third terminal is connected to the negative electrode of the supercapacitor 4, and the fourth terminal is connected to the positive electrode of the supercapacitor 4.

[0041] The control switch is then closed, connecting the circuit of the first coil 11 to the battery 5. The first normally open contact 12 is closed, and the supercapacitor 4 begins to be pre-charged. When the voltage across the second coil 21 reaches 24V, the second normally open contact 22 is closed, and the supercapacitor 4 is directly charged. After charging is complete, the supercapacitor 4 slow-charging device is removed from the battery 5 and supercapacitor 4, and the connecting wire is connected to the negative pole of the supercapacitor 4 and the battery 5.

[0042] 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", "radial", "circumferential" and the like to 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0043] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0044] In the description of this specification, the description with reference to the terms "this embodiment", "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in an appropriate manner in any at least one embodiment or example. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0046] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and simple improvements made to the essential contents of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A supercapacitor slow charging circuit, used for connecting a supercapacitor and a battery to charge the supercapacitor, characterized in that: include: Pre-charge module and direct charge module, The pre-charging module includes a first contactor, which includes a first coil and a first normally open contact. The two terminals of the first coil are respectively used to connect the positive electrode and the negative electrode of the battery. When the first coil is energized, the first normally open contact is closed. The first normally open contact is connected in series with a pre-charging resistor, and the pre-charging resistor is connected to the battery and the supercapacitor via the first normally open contact. The direct charging module includes a second contactor, which includes a second coil and a second normally open contact. The two terminals of the second coil are respectively used to connect the positive electrode and the negative electrode of the supercapacitor. When the detection voltage of the second coil reaches a preset voltage, the second normally open contact is closed. The second normally open contact is connected in parallel with the pre-charging resistor.

2. The supercapacitor slow-charging circuit according to claim 1, characterized in that: The first coil is provided with a first terminal and a second terminal at both ends, respectively, wherein the first terminal is used to connect to the positive electrode of the battery, and the second terminal is used to connect to the negative electrode of the battery.

3. The supercapacitor slow-charging circuit according to claim 2, characterized in that: The pre-charging module further includes a control switch component, which is connected in series with the first coil.

4. The supercapacitor slow-charging circuit according to claim 3, characterized in that: The switch assembly includes a start switch and an emergency stop switch.

5. The supercapacitor slow-charging circuit according to claim 2, characterized in that: The second coil is provided with a third terminal and a fourth terminal at both ends, wherein the third terminal is connected to the negative electrode of the supercapacitor, and the fourth terminal is connected to the positive electrode of the supercapacitor. Two ends of the pre-charging resistor are connected to the second terminal and the third terminal respectively.

6. The supercapacitor slow-charging circuit according to claim 5, characterized in that: The first terminal, the second terminal, the third terminal and the fourth terminal are all provided with a terminal clip.

7. The supercapacitor slow-charging circuit according to claim 1, characterized in that: The resistance of the pre-charge resistor is 30Ω.

8. The supercapacitor slow-charging circuit according to claim 1, characterized in that: The preset voltage is 24V.

9. A supercapacitor slow charging device, characterized in that: The invention comprises the supercapacitor slow-charging circuit according to any one of claims 1 to 8.

10. A supercapacitor slow charging device, characterized in that: It comprises a control panel and the supercapacitor slow-charging circuit according to claim 4, wherein the control panel is provided with a closing button and a disconnecting button, the closing button is connected to the start switch, and the disconnecting button is connected to the emergency stop switch. The control panel is also provided with a DC voltage meter and a pre-charge current meter.

Images