Portable DC mobile power supply

Abstract

The utility model discloses a portable direct current mobile power supply, which comprises a shell, a cover body, a power supply and an output connector, the upper end of the shell is provided with an opening, and an annular bulge is formed in the shell along the edge of the shell; one side of the cover body is hinged to one side of the shell, an annular groove is formed in the cover body along the edge of the cover body, and the annular groove is filled with a sealing body. The portable direct-current mobile power supply device provided by the utility model has the beneficial effects that the cover body covers the shell, the cover body abuts against the edge of the shell to form a sealing structure on the outer side, and at the moment, the annular bulge is inserted into the annular groove and abuts against the sealing body to form a sealing structure on the inner side; external liquid such as water and oil can be prevented from entering the cover body, the waterproof performance of the mobile power supply is greatly improved, and the mobile power supply can supply power to airplane components during airplane ground maintenance and debugging.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile power supplies, in particular to a portable DC mobile power supply. Background Art

[0002] Currently, DC 27V power supplies are commonly used for some specific electronic equipment or systems. Many power accessories on aircraft are powered by DC 27V power supplies.

[0003] Generally speaking, a 27V power supply is required when a product (or subsystem) needs to be individually inspected and debugged during aircraft ground maintenance and debugging. Currently, there is no dedicated mobile power supply to power aircraft components separately. Therefore, during aircraft ground maintenance and debugging, a wire reel and a DC 27V adapter vehicle need to be connected to an external 380V power supply for power. The preparation and completion work is too cumbersome, and the adapter equipment is not light, resulting in low work efficiency. It is also restricted by whether there is a power interface near the work site. Therefore, it is necessary to develop a DC 27V power supply specifically for aircraft components. At the same time, since aircraft ground maintenance and debugging are carried out outdoors in a relatively harsh environment, the waterproof performance of the mobile power supply is required to be high, but the waterproof performance of ordinary mobile power supplies currently cannot meet the requirements. Utility Model Content

[0004] The purpose of the present invention is to overcome the above technical deficiencies and to provide a portable DC mobile power supply that can be used specifically to power aircraft components and has excellent waterproof performance.

[0005] In order to achieve the above technical purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a portable DC mobile power supply, comprising:

[0007] A shell having an upper end opening, wherein an annular protrusion is formed inside the shell along an edge of the shell;

[0008] a cover body, one side of which is hinged to one side of the shell, an annular groove is formed in the cover body along the edge of the cover body, and the annular groove is filled with a sealing body. When the cover body is closed on the shell, the edge of the cover body abuts the edge of the shell, and the annular protrusion is inserted into the annular groove and abuts against the sealing body;

[0009] a power source, which is fixed in the housing; and

[0010] An output connector is fixed outside the housing and electrically connected to the power source.

[0011] In some embodiments, the sealing body is a rubber sealing ring, and the rubber sealing ring is plugged into the annular groove.

[0012] In some embodiments, two parallel convex rings are formed in the cover body along the edge of the cover body, and the annular groove is located between the two convex rings.

[0013] In some embodiments, one side of the cover is hinged to one side of the housing via at least one hinge.

[0014] In some embodiments, the shell is provided with a plurality of fixing screw holes, the cover is provided with a plurality of through holes corresponding to the respective fixing screw holes, and the portable DC mobile power supply further comprises a plurality of fixing screws, each of the fixing screws respectively passing through the corresponding through hole and being threadedly connected to the corresponding fixing screw hole.

[0015] In some embodiments, the power source is fixed in the housing via a plurality of locking screws.

[0016] In some embodiments, the portable DC mobile power supply also includes a control component, which includes a circuit breaker and a step-down module. The positive pole of the power supply is electrically connected to one end of the circuit breaker, and the other end of the circuit breaker is electrically connected to the positive input end of the step-down module. The negative pole of the power supply is electrically connected to the negative input end of the step-down module, the positive output end of the step-down module is electrically connected to the positive pole of the output connector, and the negative output end of the step-down module is electrically connected to the negative pole of the output connector.

[0017] In some embodiments, the control component further includes a power switch, one end of the power switch is electrically connected to the positive pole of the power supply, and the other end of the power switch is electrically connected to one end of the circuit breaker.

[0018] In some embodiments, the control component further includes a voltmeter, one end of the voltmeter is electrically connected to the other end of the power switch, and the other end of the voltmeter is electrically connected to the negative pole of the power supply.

[0019] In some embodiments, the portable DC mobile power supply further includes a charging connector, the positive pole of the charging connector is electrically connected to the positive pole of the power source, and the negative pole of the charging connector is electrically connected to the negative pole of the power source.

[0020] Compared with the prior art, the portable DC mobile power supply device provided by the present invention has the following beneficial effects: during installation, the power supply is fixed to the shell, the output connector is fixed to the outside of the shell, and the control component is fixed to the cover body. After the electrical connection is completed through the wire, the cover body is closed on the shell, and the edge of the cover body abuts against the shell to form an outer sealing structure. At this time, the annular protrusion is inserted into the annular groove and abuts against the sealing body. The sealing between the annular protrusion and the sealing body is achieved by the deformation of the sealing body, thereby forming an inner sealing structure. Under the dual action of the outer sealing structure and the inner sealing structure, external water, oil and other liquids can be prevented from entering the cover body, thereby greatly improving the waterproof performance of the mobile power supply, and can power aircraft components during ground maintenance and debugging of the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the portable DC mobile power supply provided by one embodiment of the present invention when the cover is in an open state;

[0022] Figure 2 yes Figure 1 A schematic structural diagram of the portable DC mobile power supply when the cover is in a closed state;

[0023] Figure 3 yes Figure 2 A partial enlarged view of the middle area A;

[0024] Figure 4 yes Figure 1 Schematic diagram of the circuit structure of the portable DC mobile power supply;

[0025] Explanation of the accompanying drawings: 1-shell, 11-annular protrusion, 12-fixing screw hole, 2-cover, 21-annular groove, 22-sealing body, 23-convex ring, 24-hinge, 25-through hole, 3-power supply, 31-locking screw, 4-output connector, 5-control component, 51-circuit breaker, 52-step-down module, 53-power switch, 54-voltmeter, 6-charging connector. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] See also Figure 1 , Figure 1This is a schematic diagram of the three-dimensional structure of a portable DC mobile power supply in an embodiment of the present invention when the cover is in an open state. The portable DC mobile power supply includes a housing 1, a cover 2, a power supply 3, an output connector 4 and a control component 5.

[0028] The upper end of the shell 1 is open, and an annular protrusion 11 is formed inside the shell 1 along the edge of the shell 1 .

[0029] See also Figure 1-Figure 3 One side of the cover body 2 is hinged to one side of the shell 1, and an annular groove 21 is opened in the cover body 2 along the edge of the cover body 2. The annular groove 21 is filled with a sealing body 22. When the cover body 2 is covered on the shell 1, the edge of the cover body 2 abuts against the edge of the shell 1, and the annular protrusion 11 is inserted into the annular groove 21 and abuts against the sealing body 22, while squeezing the sealing body 22 so that the sealing body 22 is in a compressed state.

[0030] The power supply 3 is fixed in the housing 1 .

[0031] The output connector 4 is fixed outside the housing 1 and is electrically connected to the power source 3 .

[0032] The control component 5 is fixed in the cover body 2 , and the control component 5 is electrically connected to the power supply 3 and the output connector 4 .

[0033] In the present invention, during installation, the power supply 3 is fixed to the shell 1, the output connector 4 is fixed to the outside of the shell 1, and the control component 5 is fixed to the inside of the cover body 2. After the electrical connection is completed through the wire, the cover body 2 is covered on the shell 1. The cover body 2 abuts against the edge of the shell 1 and forms an outer sealing structure. At this time, the annular protrusion 11 is inserted into the annular groove 21 and abuts against the sealing body 22. The sealing between the annular protrusion 11 and the sealing body 22 is achieved by the deformation of the sealing body 22, thereby forming an inner sealing structure. Under the dual action of the outer sealing structure and the inner sealing structure, external water, oil and other liquids can be prevented from entering the cover body 2, which greatly improves the waterproof performance of the mobile power supply and can power aircraft components during ground maintenance and debugging of the aircraft.

[0034] In one embodiment, see Figure 1-Figure 3 The sealing body 22 is a rubber sealing ring, and the rubber sealing ring is plugged into the annular groove 21.

[0035] In one embodiment, see Figure 1-Figure 3 Two parallel convex rings 23 are formed inside the cover body 2 along the edge of the cover body 2 , and the annular groove 21 is located between the two convex rings 23 .

[0036] In one embodiment, see Figure 1-Figure 3 One side of the cover 2 is hinged to one side of the shell 1 via at least one hinge 24 .

[0037] In one embodiment, see Figure 1 The shell 1 is provided with a plurality of fixing screw holes 12, and the cover body 2 is provided with a plurality of through holes 25 corresponding to each of the fixing screw holes 12. The portable DC mobile power supply also includes a plurality of fixing screws, each of which passes through the corresponding through hole 25 and is threadedly connected to the corresponding fixing screw hole 12, thereby fixing the cover body 2 to the shell 1.

[0038] In one embodiment, see Figure 1 The power source 3 is fixed in the housing 1 via a plurality of locking screws 31. In this embodiment, the number of the locking screws 31 is four.

[0039] In one embodiment, see Figure 1 and Figure 4 The control assembly 5 includes a circuit breaker 51 and a voltage-step-down module 52. The positive electrode of the power source 3 is electrically connected to one end of the circuit breaker 51, and the other end of the circuit breaker 51 is electrically connected to the positive input terminal of the voltage-step-down module 52. The negative electrode of the power source 3 is electrically connected to the negative input terminal of the voltage-step-down module 52. The positive output terminal of the voltage-step-down module 52 is electrically connected to the positive electrode of the output connector 4, and the negative output terminal of the voltage-step-down module 52 is electrically connected to the negative electrode of the output connector 4. During use, the power output of the power source 3 is stepped down to 27V by the voltage-step-down module 52 before being output to the output connector 4. The circuit breaker 51 provides protection.

[0040] In this embodiment, the power supply 3 adopts an 18650 lithium battery, and the maximum output voltage of the 18650 lithium battery is 33.6V. Therefore, even if leakage occurs, it will not cause harm to personnel. The capacity of the 18650 power supply is 2500mah3.7V. The circuit breaker 51 uses a DBB-5 type circuit breaker. When the output current is greater than 5A, the DBB-5 type circuit breaker will automatically disconnect, thereby cutting off the power supply of the power supply 3 to prevent the power supply 3 from overheating and damage due to large current discharge. The step-down module 52 uses a DC-DC adjustable step-down module with an input voltage of 4V~38V and an output voltage set to 27V. The output connector 4 uses a three-hole socket, which is matched according to the power plug of the measurement aircraft debugging equipment.

[0041] In one embodiment, see Figure 1 and Figure 4The control assembly 5 further includes a power switch 53, one end of which is electrically connected to the positive electrode of the power source 3, and the other end of which is electrically connected to one end of the circuit breaker 51. When in use, the power switch 53 is closed, and after use, the power switch 53 is opened to ensure safety.

[0042] In one embodiment, see Figure 1 and Figure 4 The control component 5 also includes a voltmeter 54, one end of the voltmeter 54 is electrically connected to the other end of the power switch 3, and the other end of the voltmeter 54 is electrically connected to the negative electrode of the power supply 3. By setting the voltmeter 54, the output voltage of the power supply 3 can be measured after the power switch 53 is closed, so as to determine whether the output voltage of the power supply 3 reaches the set value. When the output voltage of the power supply 3 is lower than the set value, it should be charged in time.

[0043] In one embodiment, see Figure 1 and Figure 4 The portable DC mobile power supply also includes a charging connector 6, the positive pole of the charging connector 6 is electrically connected to the positive pole of the power supply 3, and the negative pole of the charging connector 6 is electrically connected to the negative pole of the power supply 3.

[0044] It should be understood that Figure 1 Only the main components of the present invention are shown in the figure, and the wires connecting the various components are not shown. Those skilled in the art can Figure 4 The circuit diagram is used to connect the wires.

[0045] In order to better understand the present invention, the following Figures 1 to 4 The technical solution of the present invention is described in detail: during installation, the power supply 3 is fixed to the shell 1, the output connector 4 is fixed to the outside of the shell 1, and the control component 5 is fixed to the inside of the cover body 2. After the electrical connection is completed through the wire, the cover body 2 is covered on the shell 1. The cover body 2 abuts against the edge of the shell 1 and forms an outer sealing structure. At this time, the annular protrusion 11 is inserted into the annular groove 21 and abuts against the sealing body 22. The sealing between the annular protrusion 11 and the sealing body 22 is achieved through the deformation of the sealing body 22, thereby forming an inner sealing structure. Under the dual action of the outer sealing structure and the inner sealing structure, external water, oil and other liquids can be prevented from entering the cover body 2, which greatly improves the waterproof performance of the mobile power supply and can power aircraft components during ground maintenance and debugging of the aircraft.

[0046] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A portable DC mobile power source, characterized in that: include: A shell having an upper end opening, wherein an annular protrusion is formed inside the shell along its edge; A cover body, one side of which is hinged to one side of the shell, an annular groove is provided inside the cover body along its edge, and a sealing body is filled in the annular groove. When the cover body is covered on the shell, the edge of the cover body abuts against the edge of the shell, and the annular protrusion is inserted into the annular groove, abuts against the sealing body, and presses the sealing body; a power source, which is fixed in the housing; and An output connector is fixed outside the housing and is electrically connected to the power source.

2. The portable DC mobile power source according to claim 1, characterized in that: The sealing body is a rubber sealing ring, and the rubber sealing ring is plugged into the annular groove.

3. The portable DC mobile power source according to claim 1, characterized in that: Two parallel convex rings are formed in the cover body along the edge of the cover body, and the annular groove is located between the two convex rings.

4. The portable DC mobile power source according to claim 1, characterized in that: One side of the cover is hinged to one side of the shell via at least one hinge.

5. The portable DC mobile power source according to claim 1, characterized in that: The shell body is provided with a plurality of fixing screw holes, the cover body is provided with a plurality of through holes corresponding to the fixing screw holes one by one, and the portable DC mobile power supply further comprises a plurality of fixing screws, each of the fixing screws respectively passes through the corresponding through hole and is threadedly connected to the corresponding fixing screw hole.

6. The portable DC mobile power source according to claim 1, characterized in that: The power source is fixed in the housing via a plurality of locking screws.

7. The portable DC mobile power source according to claim 1, characterized in that: It also includes a control component, which includes a circuit breaker and a step-down module. The positive pole of the power source is electrically connected to one end of the circuit breaker, the other end of the circuit breaker is electrically connected to the positive input end of the step-down module, the negative pole of the power source is electrically connected to the negative input end of the step-down module, the positive output end of the step-down module is electrically connected to the positive pole of the output connector, and the negative output end of the step-down module is electrically connected to the negative pole of the output connector.

8. The portable DC mobile power source according to claim 7, characterized in that: The control component also includes a power switch, one end of which is electrically connected to the positive electrode of the power supply, and the other end of which is electrically connected to one end of the circuit breaker.

9. The portable DC mobile power source according to claim 8, characterized in that: The control component also includes a voltmeter, one end of the voltmeter is electrically connected to the other end of the power switch, and the other end of the voltmeter is electrically connected to the negative pole of the power supply.

10. The portable DC mobile power source according to claim 1, characterized in that: It also includes a charging connector, the positive pole of the charging connector is electrically connected to the positive pole of the power source, and the negative pole of the charging connector is electrically connected to the negative pole of the power source.

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