A portable direct current constant current source device

Abstract

The utility model relates to the technical field of direct current constant current source provides a portable direct current constant current source device, including direct current battery, constant current control module and structure device, the constant current control module is the device that can output constant direct current after external DC power supply, structure device includes structure device main part and apron, be equipped with opening and switch button on the apron, structure device main part includes three side plates, inner baffle, bottom plate, jack female seat and electrical interface, be equipped with plug -in guide clamping groove and locking clamping mechanism on the bottom plate. The device does not depend on external power network, can be used in the open field, is easy to carry.

Description

Technical Field

[0001] This utility model relates to the field of DC constant current source technology, and in particular to a portable DC constant current source device. Background Technology

[0002] When carrying out automatic control and measurement work in the field, it is often necessary to use a portable DC constant current source when there is no external power grid available.

[0003] Currently, portable DC power supplies that do not rely on the power grid are mainly batteries, which can provide a stable voltage but cannot provide a constant current on their own. DC constant current sources are mostly DC power supplies that require an external power grid. They convert AC power to DC and output a constant DC current, which is inconvenient for field use and is also expensive. Summary of the Invention

[0004] The purpose of this invention is to provide a portable DC constant current source device that can be used in outdoor fields.

[0005] This utility model is achieved through the following means: a portable DC constant current source device, characterized in that it includes a DC battery, a constant current control module, and a structural device; the constant current control module is a device that can output a constant DC current after being connected to an external DC power supply; the structural device includes a main body and a cover plate; the cover plate is provided with an opening and a switch button; the main body of the structural device includes three side plates, an inner baffle, a bottom plate, a socket socket and an electrical interface, and the bottom plate is provided with a plug-in guide slot and a locking mechanism.

[0006] The three side plates and the bottom plate are provided with heat dissipation and ventilation holes to facilitate heat dissipation.

[0007] Preferably, the DC battery has a plug-in guide strip, an output socket, a locking buckle, and a buckle button.

[0008] DC batteries and constant current control modules can be purchased commercially. Because the ripple of a DC battery is lower than that of AC-to-DC conversion, it can be used in this invention to obtain a DC current with a low ripple coefficient.

[0009] Preferably, the DC battery is a lithium battery used in power tools.

[0010] Preferably, the lithium battery has a maximum output voltage of not less than 20V and a capacity of not less than 4.0Ah.

[0011] Preferably, the electrical interface is mounted on the base plate, is made of a conductive material, and is structurally compatible with the output socket, allowing it to be inserted into the output socket to complete the electrical connection; the insertion guide slot is compatible with the insertion guide strip, and they can be interlocked and fixed together.

[0012] During assembly, the insertion guide strip is inserted into the insertion guide slot, and the DC battery is moved along the insertion guide slot until the electrical interface is inserted into the output socket and the locking buckle is engaged by the locking mechanism. This completes the installation of the DC battery on the structural device and simultaneously ensures a good electrical connection between the output socket and the electrical interface.

[0013] During disassembly, press the buckle button to disengage the locking buckle from the locking mechanism, and pull out the DC battery along the direction of the insertion guide strip.

[0014] Many types of DC batteries, such as lithium batteries for power tools, have a snap button and a locking snap. Pressing the snap button retracts the locking snap, thereby disengaging the locking snap from the locking mechanism.

[0015] Preferably, the electrical interface consists of two side-by-side low-resistance conductive metal sheets made of nickel-plated brass or phosphor bronze.

[0016] Nickel-plated brass or phosphor bronze have good electrical conductivity, wear resistance, and corrosion resistance, which can ensure the reliable performance of electrical interfaces.

[0017] Preferably, one end of the switch button is electrically connected to the input terminal of the constant current control module, and the other end is electrically connected to the electrical interface; and the constant current control module is embedded in the cover plate through the opening.

[0018] Preferably, the height of the three side plates and the inner baffle is slightly higher than the height of the constant current control module; the insertion / removal guide slot is arranged longitudinally on the base plate; two of the three side plates stand parallel to each other on the two longitudinal edges of the base plate, located on the side farther from the insertion / removal guide slot, and the length of these two side plates is greater than the width of the constant current control module, sufficient to extend to the vicinity of the insertion / removal guide slot, but less than the length of the base plate; the third side plate is approximately equal in length to the width of the base plate, and stands on the transverse edge of the base plate farther from the insertion / removal guide slot; the inner baffle is longer than the length of the constant current control module but less than the width of the base plate, stands in the middle of the base plate, parallel to the third side plate, and the distance between the inner baffle and the third side plate is greater than the width of the constant current control module. After the constant current control module is installed on the cover plate, it is embedded in the space enclosed by the base plate, the inner baffle, and the three side plates, and the cover plate is fixed to the top of the space enclosed by the base plate, the inner baffle, and the three side plates.

[0019] This completes the installation of the constant current control module on the structural device.

[0020] Since the length of the two longitudinally arranged side plates is sufficient to extend to the vicinity of the insertion guide slot, after being arranged, the two side plates will extend to the DC battery, which can fix the DC battery.

[0021] Preferably, the socket female is electrically connected to the output terminal of the constant current control module, the socket female is mounted on the base plate, and passes through the side plate to face outward.

[0022] In this way, the socket can be used as a constant DC current output port.

[0023] After the above work is completed, the DC battery and the constant current control module are installed on the structural device, which then assembles the DC battery and the constant current control module into a single unit. Furthermore, the DC battery is electrically connected to the electrical interface; the electrical interface is electrically connected to the switch button, and the switch button is electrically connected to the input terminal of the constant current control module. Therefore, the DC battery can supply power to the constant current control module under the control of the switch button, and the constant current control module outputs a constant DC current, thus obtaining a portable DC constant current source device suitable for field use.

[0024] Preferably, the DC current output of the constant current control module is adjustable, with a maximum output power of not less than 30W, and for a 36Ω external load, the maximum output current is not less than 0.8A and the minimum current is not greater than 1mA.

[0025] Current DC constant current source devices on the market rely on an external power grid and are expensive. In contrast, this invention offers the following advantages: it does not rely on an external power grid, can be used in outdoor fields, is low in cost, small in size, and easy to carry. Attached Figure Description

[0026] Figure 1 This is an overall structural diagram of the present invention;

[0027] Figure 2 This is a schematic diagram of the components of this utility model;

[0028] Figure 3 This is an exploded view of the structural device of this utility model;

[0029] Figure 4 This is a left front oblique view of the main body of the structural device of this utility model;

[0030] Figure 5 This is a right rear oblique view of the main body of the structural device of this utility model;

[0031] Figure 6 This is a schematic diagram of the DC battery of this utility model;

[0032] Figure 7 This is a schematic diagram of the constant current control module being installed on the cover plate according to this utility model;

[0033] Figure 8 This is a schematic diagram of the installation of the cover plate with the installed constant current control module onto the main body of the structural device according to this utility model. Detailed Implementation

[0034] In the description of this utility model, it should be understood that the terms "upper", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "longitudinal", "lateral", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that it must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] The following is in conjunction with the appendix Figure 1 To be continued Figure 8 The present invention will be described in detail with reference to the embodiments. These embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0036] A portable DC constant current source device, such as Figure 1 and Figure 2 As shown, it includes a DC battery 1, a constant current control module 2, and a structural device 3.

[0037] In this embodiment, the constant current control module 2 is a device that can output a constant DC current after being connected to an external DC power supply, and the current amplitude is adjustable. It can be purchased from the market.

[0038] In this embodiment, as Figure 3 As shown, the structural device 3 includes a main body 31 and a cover plate 32. The cover plate 32 has an opening 322 and a switch button 321. Figures 4 to 5 As shown, the main body 31 of the structure device includes side plate 3111, side plate 3112, side plate 3113, inner baffle 312, bottom plate 313, socket female 314 and electrical interface 315; the bottom plate 313 is provided with insertion and removal guide slot 316 and locking and locking mechanism 317.

[0039] In this embodiment, as Figure 5 As shown, side plates 3111, 3112, 3113 and bottom plate 313 are provided with heat dissipation and ventilation holes 318 to facilitate heat dissipation.

[0040] The DC battery 1 was purchased from the market. Because the ripple of the DC battery is lower than that of the DC converted from AC, it can be used in this invention to obtain a DC constant current with a low ripple coefficient.

[0041] In this embodiment, as Figure 6 As shown, the DC battery 1 has a plug-in guide strip 12, an output socket 13, a locking buckle 14, and a buckle button 15.

[0042] In this embodiment, the DC battery 1 is a lithium battery for power tools, with a maximum output voltage of not less than 20V and a capacity of not less than 4.0Ah.

[0043] In this embodiment, as Figures 4 to 5 As shown, the electrical interface 315 is mounted on the base plate, and its material is a conductor. Its structure is similar to... Figure 6 The output socket 13 is matched and can be inserted into the output socket 13 to complete the electrical connection.

[0044] In this embodiment, as Figure 4 and Figure 6 As shown, the insertion guide slot 316 is matched with the insertion guide strip 12 and can be interlocked and fixed together.

[0045] During assembly, insert the insertion guide strip 12 into the insertion guide slot 316, and move the DC battery 1 along the insertion guide slot 316 until the electrical interface 315 is inserted into the output socket 13 and the locking buckle 14 is locked by the locking mechanism 317. This completes the installation of the DC battery 1 on the structural device 3, and at the same time achieves a good electrical connection between the output socket 13 and the electrical interface 315.

[0046] During disassembly, press the buckle button 15 to disengage the locking buckle 14 from the locking mechanism 317, and pull out the DC battery 1 along the direction of the insertion guide strip 12.

[0047] In this embodiment, the DC battery 1 has a latch button 15 and a locking latch 14. Pressing the latch button 15 can disengage the locking latch 14 from the locking mechanism 317.

[0048] In this embodiment, the electrical interface 315 consists of two side-by-side low-resistance conductive metal sheets made of nickel-plated brass or phosphor bronze.

[0049] Nickel-plated brass or phosphor bronze have good electrical conductivity, wear resistance, and corrosion resistance, which can ensure the reliable performance of electrical interfaces.

[0050] In this embodiment, one end of the switch button 321 is electrically connected to the input terminal of the constant current control module 2, and the other end is electrically connected to the electrical interface 315. Figure 7 As shown, the constant current control module 2 is embedded in the cover plate 32 through the opening 322.

[0051] In this embodiment, the heights of side plates 3111, 3112, 3113, and the inner baffle 312 are all slightly higher than the height of the constant current control module 2. For example... Figure 4As shown, the insertion / removal guide slot 316 is longitudinally arranged on the base plate 313; the side plates 3112 and 3113 are erected parallel to each other on the two longitudinal edges of the base plate 313, located on the side farther from the insertion / removal guide slot 316. The length of the side plates 3112 and 3113 is greater than the width of the constant current control module 2, sufficient to extend to the vicinity of the insertion / removal guide slot 316, but less than the length of the base plate 313; the length of the side plate 3111 is approximately equal to the width of the base plate 313, and it is erected on the transverse edge of the base plate 313 farther from the insertion / removal guide slot 316; the length of the inner baffle 312 is greater than the length of the constant current control module 2, less than the width of the base plate 313, and it is erected in the middle of the base plate 313, parallel to the side plate 3111, and the distance between the inner baffle 312 and the side plate 3111 is greater than the width of the constant current control module 2.

[0052] In this way, the space enclosed by the base plate 313, inner baffle 312, side plate 3111, side plate 3112, and side plate 3113 is large enough to accommodate the constant current control module 2. Furthermore, after the side plates 3112 and 3113 are arranged, they will extend to the DC battery 1, which can be used to fix the DC battery 1.

[0053] In this embodiment, after the constant current control module 2 is installed on the cover plate 32, it is pressed... Figure 8 In the direction of the middle arrow, it is embedded in the space surrounded by the base plate 313, inner baffle 312, side plate 3111, side plate 3112 and side plate 3113, and the cover plate 32 is fixed at the top of the space surrounded by the base plate 313, inner baffle 312, side plate 3111, side plate 3112 and side plate 3113.

[0054] This completes the installation of the constant current control module 2 on the structural device 3.

[0055] In this embodiment, the socket female connector 314 is electrically connected to the output terminal of the constant current control module 2, such as... Figure 4 and Figure 5 As shown, the socket female 314 is mounted on the base plate 313 and passes through the side plate 3111 to face outward.

[0056] In this way, the socket 314 can be used as a constant DC current output port.

[0057] After the above work is completed, the DC battery 1 and the constant current control module 2 are installed on the structural device 3, and the structural device 3 assembles the DC battery 1 and the constant current control module 2 into a whole. Furthermore, the DC battery 1 is electrically connected to the electrical interface 315; the electrical interface 315 is electrically connected to the switch button 321, and the switch button 321 is electrically connected to the input terminal of the constant current control module 2. Therefore, the DC battery 1 can supply power to the constant current control module 2 under the control of the switch button 321, and the constant current control module 2 outputs a constant DC current, thus obtaining a portable DC constant current source device that can be used in the field.

[0058] In this embodiment, the DC current output of the constant current control module 2 is adjustable, with a maximum output power of not less than 30W. For a 36Ω external load, the maximum output current is not less than 0.8A and the minimum current is not greater than 1mA.

[0059] DC constant current source devices on the market are expensive and rely on an external power grid. In contrast, this embodiment achieves the following advantages: it does not rely on an external power grid, can be used in the field, is inexpensive, and is small and portable.

Claims

1. A portable DC constant current source device, characterized in that, It includes a DC battery, a constant current control module, and a structural device; the constant current control module is a device that can output a constant DC current after being connected to an external DC power supply; the structural device includes a main body and a cover plate; the cover plate is provided with an opening and a switch button; the main body of the structural device includes three side plates, an inner baffle, a bottom plate, a socket female and an electrical interface, and the bottom plate is provided with a plug-in guide slot and a locking mechanism.

2. The portable DC constant current source device as described in claim 1, characterized in that, The DC battery has a plug-in guide strip, an output socket, a locking buckle, and a buckle button.

3. The portable DC constant current source device as described in claim 2, characterized in that, The DC battery is a lithium battery used in power tools.

4. The portable DC constant current source device as described in claim 3, characterized in that, The maximum output voltage of the lithium battery is not less than 20V, and the capacity is not less than 4.0Ah.

5. A portable DC constant current source device as described in claim 2, characterized in that, The electrical interface is installed on the base plate, is made of conductive material, and is structured to match the output socket. It can be inserted into the output socket to complete the electrical connection. The insertion guide slot is matched with the insertion guide strip and can be interlocked and fixed together.

6. A portable DC constant current source device as described in claim 5, characterized in that, The electrical interface consists of two side-by-side low-resistance conductive metal plates made of nickel-plated brass or phosphor bronze.

7. A portable DC constant current source device as described in claim 5, characterized in that, One end of the switch button is electrically connected to the input terminal of the constant current control module, and the other end is electrically connected to the electrical interface. The constant current control module is embedded in the cover plate through the opening.

8. A portable DC constant current source device as described in claim 7, characterized in that, The height of the three side plates and the inner baffle is slightly higher than the height of the constant current control module; the insertion / removal guide slot is arranged longitudinally on the base plate; two of the three side plates stand parallel to each other on the two longitudinal edges of the base plate, located on the side farther from the insertion / removal guide slot, and their length is greater than the width of the constant current control module, sufficient to extend to the vicinity of the insertion / removal guide slot, but less than the length of the base plate; the third of the three side plates is approximately equal in length to the width of the base plate, and stands on the transverse edge of the base plate farther from the insertion / removal guide slot; the inner baffle is longer than the length of the constant current control module but less than the width of the base plate, stands in the middle of the base plate, parallel to the third side plate, and the distance between the inner baffle and the third side plate is greater than the width of the constant current control module; after the constant current control module is installed on the cover plate, it is embedded in the space enclosed by the base plate, the inner baffle, and the three side plates, and the cover plate is fixed to the top of the space enclosed by the base plate, the inner baffle, and the three side plates.

9. A portable DC constant current source device as described in claim 1, characterized in that, The socket female is electrically connected to the output terminal of the constant current control module. The socket female is mounted on the base plate and passes through the side plate to face outward.

10. A portable DC constant current source device as described in claim 1, characterized in that, The DC current output of the constant current control module is adjustable, with a maximum output power of not less than 30W. For a 36Ω external load, the maximum output current is not less than 0.8A and the minimum current is not greater than 1mA.

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