Portable power supply

Abstract

The utility model relates to a portable power supply, comprising a case, an inverter assembly and a circuit board; the case has an installation cavity, one side of the circuit board is connected to the inverter assembly, and the side of the circuit board facing away from the inverter assembly is attached to the wall of the installation cavity. The portable power supply can improve the waterproof performance of the portable power supply while achieving good heat dissipation of the inverter assembly.

Description

Technical Field

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

[0002] Portable energy storage power supply is a product that uses lithium-ion batteries or other energy storage methods to provide power support for various devices through inverters or other output modules. It is lightweight, portable, environmentally friendly, and safe, and can meet the power needs of various scenarios such as outdoor travel, camping, and emergency. Current portable power supplies often dissipate heat for internal devices by setting heat dissipation holes, which can easily lead to water ingress, reducing the waterproof performance of portable power supplies. Utility Model Content

[0003] Based on this, it is necessary to provide a portable power source.

[0004] A portable power supply includes a chassis, an inverter assembly, a circuit board and a fan; the chassis has an installation cavity, one side of the circuit board is connected to the inverter assembly, and the side of the circuit board facing away from the inverter assembly is attached to the wall of the installation cavity; the fan is connected to the chassis and arranged toward the installation cavity.

[0005] In one of the embodiments, it further comprises a rack, wherein the rack is connected to the wall of the installation cavity, and the rack is connected to the circuit board and / or the inverter assembly.

[0006] In one of the embodiments, a slot is formed between the frame and the chassis, and at least a portion of an edge of the circuit board is clamped in the slot.

[0007] In one of the embodiments, a heat dissipation structure is provided on the outer surface of the chassis in a convex or concave manner.

[0008] In one of the embodiments, a side of the circuit board facing away from the inverter assembly has an aluminum alloy layer, and the aluminum alloy layer is attached to a wall surface of the installation cavity.

[0009] In one of the embodiments, a fan is further included, and the fan is disposed in the installation cavity.

[0010] In one of the embodiments, the chassis includes a box body and a box cover, the box body and the box cover are connected to form the installation cavity, and the circuit board is attached to the inner surface of the box body.

[0011] In one of the embodiments, at least one of the box cover and the box body is provided with a waterproof socket, and the waterproof socket is electrically connected to the inverter assembly.

[0012] In one of the embodiments, a sealing ring is provided at the connection between the box body and the box cover.

[0013] In one of the embodiments, it also includes a bracket assembly, the chassis has a top and a bottom arranged relatively to each other, the bracket assembly includes a handle portion, a connecting portion and a leg portion connected in sequence, the connecting portion is connected to the chassis, the leg portion protrudes toward the bottom of the chassis, and the handle portion protrudes toward the top of the chassis.

[0014] Generally, the inverter assembly inside the portable power supply generates a large amount of heat. The inverter assembly of the above-mentioned portable power supply is arranged on a circuit board, and the side of the circuit board facing away from the inverter assembly is directly attached to the wall of the installation cavity. In this way, the circuit board required to be configured by the inverter assembly itself is fully utilized, which facilitates the inverter assembly to dissipate heat to the external environment through the circuit board and the chassis. In this way, the setting of heat dissipation holes can be reduced or avoided, so that the chassis can be set more closed, avoiding water from entering the installation cavity and damaging the inverter assembly and the battery. In this way, the waterproof performance of the portable power supply is improved under the premise of achieving good heat dissipation of the inverter assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of a three-dimensional structure of a portable power supply according to an embodiment;

[0016] Figure 2 A schematic diagram of the structure of a portable power supply box and internal electrical components according to an embodiment;

[0017] Figure 3 A schematic diagram of a three-dimensional split structure of a chassis of a portable power supply according to an embodiment;

[0018] Figure 4 The figure is a schematic diagram of the matching structure of an inverter assembly and a circuit board according to an embodiment. DETAILED DESCRIPTION

[0019] For ease of understanding of the application, the application will be described more fully below. The application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the application more thorough and comprehensive.

[0020] 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 technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In the description of the present application, the meaning of "several" is at least one, such as one, two, etc., unless otherwise clearly and specifically defined.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] In the present application, the technical features described in an open manner include closed technical solutions composed of the listed features, and also include open technical solutions containing the listed features.

[0023] like Figures 1 to 3 As shown, in one embodiment, a portable power supply 10 is provided, including a chassis 100, an inverter assembly 200 and a circuit board 300; the chassis 100 has an installation cavity 104, one side of the circuit board 300 is connected to the inverter assembly 200, and the side of the circuit board 300 facing away from the inverter assembly 200 is attached to the wall 105 of the installation cavity 104, or in other words, the side of the circuit board 300 facing away from the inverter assembly 200 is in contact with the inner surface of the chassis 100. The inverter assembly 200 of the portable power supply 10 is arranged on the circuit board 300, and the side of the circuit board 300 facing away from the inverter assembly 200 is directly attached to the wall 105 of the installation cavity 104. In this way, the circuit board 300 required to be configured by the inverter assembly 200 itself is fully utilized, so that the inverter assembly 200 can dissipate heat to the external environment through the circuit board 300 and the chassis 100, thereby reducing or avoiding the setting of heat dissipation holes, so that the chassis 100 can be set more closed, avoiding water from entering the installation cavity 104 and damaging the inverter assembly 200 and the battery 600. In this way, the waterproof performance of the portable power supply 10 is improved under the premise of achieving good heat dissipation of the inverter assembly 200.

[0024] Specifically, the inverter assembly 200 generates heat and transfers the heat to the circuit board 300, and the circuit board 300 transfers the heat to the chassis 100. Since air is a poor conductor of heat, this heat transfer method is faster than air heat transfer. Preferably, the circuit board and the chassis are made of better heat dissipation materials. For example, an aluminum alloy layer is laid on the side of the circuit board facing away from the inverter assembly, and the chassis is made of aluminum alloy to speed up heat transfer. For another example, the circuit board has more through holes, and solder is added to the through holes to form heat-conducting columns in the through holes, which is beneficial for heat conduction along the thickness direction of the circuit board.

[0025] In one embodiment, there are two circuit boards, the two circuit boards are respectively connected to the inverter assembly, and the sides of the two circuit boards facing away from the inverter assembly are respectively attached to the two walls of the installation cavity to better dissipate heat.

[0026] In order to achieve a better heat dissipation effect, in one embodiment, the material of the chassis 100 is an alloy, which has good heat dissipation performance and good strength, and is suitable for the chassis 100 of the portable power supply 10. For example, the material of the chassis 100 is stainless steel or aluminum alloy, so as to have good heat dissipation performance and good strength.

[0027] In one embodiment, the portable power supply 10 further includes a rack 110, the rack 110 is connected to the wall 105 of the installation cavity 104, the rack 110 is connected to the circuit board 300 and / or the inverter assembly 200, specifically, the rack 110 is used to fix the inverter assembly 200 and / or the circuit board 300, so as to fix the inverter assembly 200 in the installation cavity 104, and to achieve the circuit board 300 close to the wall 105 of the installation cavity 104. For example, the rack 110 is connected to the circuit board 300 alone, and the circuit board 300 is connected to the inverter, so that the rack 110 fixes the circuit board 300, and then uses the circuit board 300 to fix the inverter assembly 200. For another example, the rack 110 is connected to the inverter alone, and the inverter assembly 200 is connected to the circuit board 300. In this way, the rack 110 fixes the inverter assembly 200, and then fixes the circuit board 300 through the inverter assembly 200, so that the circuit board 300 abuts against the wall 105 of the installation cavity 104. For another example, the rack 110 is connected to the circuit board 300 and the inverter assembly 200 at the same time, so that the circuit board 300 and the inverter assembly 200 are fixed at the same time. Specifically, the rack is detachably connected to the wall of the installation cavity, such as threaded connection, snap connection and pin connection, etc., so that the rack can be detachably fixed to the chassis, which is convenient for the rack and the chassis to be formed separately.

[0028] In one embodiment, a slot 102 is formed between the rack 110 and the chassis 100, and at least part of the edge of the circuit board 300 is clamped in the slot 102. In this embodiment, the edge of the circuit board 300 is clamped into the slot 102, so as to quickly fix the circuit board 300, and then fix the inverter assembly 200, which is convenient for disassembly and assembly. In addition, clamping the edge of the circuit board 300 helps to ensure that the side of the circuit board 300 close to the inverter assembly 200 has sufficient layout space, which facilitates the inverter and the circuit board 300 to fit closely, and also helps the side of the circuit board 300 away from the inverter assembly 200 to fully fit the wall 105 of the installation cavity 104.

[0029] In one embodiment, the outer surface of the chassis is convex or concave with a heat dissipation structure. The heat dissipation structure is arranged in a convex or concave manner, which increases the area of ​​the outer surface of the chassis in contact with the external air, thereby increasing the heat dissipation area, which is beneficial to heat dissipation. In this embodiment, the heat dissipation structure 103 is convexly arranged on the chassis 100, and the heat dissipation structure 103 includes a plurality of heat dissipation blocks arranged in a convex manner.

[0030] In one of the embodiments, the portable power supply 10 further includes a fan 400, which is disposed in the installation cavity 104. The fan 400 can drive the air movement in the installation cavity 104, allowing the air to take away the heat on the surface of the inverter assembly 200, the battery 600 and other electrical components, and drive the hot air to uniformly contact the chassis 100, thereby dissipating heat outward and increasing the heat dissipation performance. It is worth mentioning that the above-mentioned battery can be a single cell or a battery module, which is used to realize the charging and discharging function of the portable power supply. In one of the embodiments, the fan is an axial flow fan. In one of the embodiments, the fan is a vacuum fan. In one of the embodiments, the air intake end of the fan is arranged toward the inverter assembly, and the air outlet end of the fan is arranged toward the chassis, so as to suck away the hot air around the inverter assembly and blow it to the chassis, which is conducive to heat transfer, better transfer of heat to the chassis and conducive to heat dissipation of the chassis outward.

[0031] In one embodiment, the case 100 includes a case body 161 and a case cover 162, the case body 161 and the case cover 162 are connected to form the installation cavity 104, the circuit board 300 is attached to the inner surface of the case body 161, and the case cover 162 is provided with a waterproof socket 170 electrically connected to the inverter. In this embodiment, the case body 161 and the case cover 162 are disassembled to install, disassemble and maintain the electrical components inside the portable power supply 10. In one embodiment, at least one of the case cover 162 and the case body 161 is provided with a waterproof socket 170, and the waterproof socket 170 is electrically connected to the inverter assembly 200. In this embodiment, the waterproof socket 170 is arranged on the case cover 162, and it is convenient for maintenance after the case cover 162 is disassembled. In this embodiment, there are two box covers 162, including a front box cover 163 and a rear box cover 164. The box body 161 has openings at the front and back, respectively. The front box cover 163 and the rear box cover 164 respectively close an opening, thereby forming an installation cavity 104 between the front box cover 163, the box body 161 and the rear box cover 164.

[0032] In one embodiment, the side of the box cover facing away from the installation cavity is recessed inward to form a layout area, and the waterproof socket is arranged in the layout area. The layout area is recessed inward, so that the position outside the layout area protrudes from the layout area, which is conducive to blocking part of the rainwater.

[0033] In one embodiment, the waterproof socket 170 includes a seat 171 and a cover 172, the seat 171 is provided with an electrical socket 173, the seat 171 is connected to the box cover 162, and the cover 172 is movably connected to the seat 171 and is used to cover the electrical socket 173. The cover can close the electrical socket 173 when the waterproof socket 170 is not in use to prevent water from entering, which helps the portable power supply 10 as a whole meet the IP52 waterproof level. In one embodiment, the cover 172 includes a silicone cover 172, which itself is not easy to penetrate water and has elasticity, and can be well adapted to the shape of the seat 171 to close the electrical socket 173. For example, the electrical socket includes one of a two-hole socket, a three-hole socket, a USB socket, and a type-c socket. For example, there are multiple electrical sockets, and each electrical socket is independently selected from one of a two-pin socket, a three-pin socket, a USB socket, and a type-c socket to adapt to more diverse charging and discharging scenarios.

[0034] In one embodiment, one of the box body and the box cover is provided with a covering edge, and the other of the box body and the box cover is embedded in the inner side of the covering edge. The covering edge helps to increase the connection distance between the box body and the box cover, and better prevents water from entering the installation cavity. In this embodiment, the box cover 162 is provided with the covering edge 165, and the box body 161 is embedded in the inner side of the covering edge 165. The covering edge 165 provided at the box cover 162 also helps to provide a connection position for the box cover 162 with a smaller volume, so as to facilitate the connection between the box cover 162 and the box body 161. In other embodiments, the box body 161 is provided with the covering edge 165, and the box cover 162 is embedded in the inner side of the covering edge 165. In this embodiment, the front box cover 163 and the rear box cover 164 are both provided with the covering edge 165, and cooperate with the box body 161.

[0035] In one embodiment, a sealing ring 180 is provided at the connection between the box body 161 and the box cover 162, and the sealing ring 180 can further seal the space between the box body 161 and the box cover 162, so as to obtain better waterproof performance. In this embodiment, the front box cover 163 and the rear box cover 164 are both provided with sealing rings 180 and cooperate with the box body 161.

[0036] In one embodiment, the portable power supply 10 further includes a support assembly 500, the case 100 has a top 191 and a bottom 192 arranged relatively to each other, the support assembly 500 includes a handle 510, a connection 520 and a leg 530 connected in sequence, the connection 520 is connected to the case 100, the leg 530 is protruded toward the bottom 192, and the handle 510 is protruded toward the top 191. Specifically, the leg can keep the case 100 away from the ground, thereby preventing the road surface water from penetrating into the case, and improving the waterproof performance of the portable power supply 10, and the handle 510 is convenient for the user to lift the portable power supply 10, which is convenient for transfer. The handle 510, the connection 520 and the leg 530 are integrally formed, which helps to make the support assembly more integrated and increase the strength of the support assembly 500. In this embodiment, the number of the support assemblies 500 is two, and they are symmetrically arranged on both sides of the case 100, thereby more stably supporting the portable power supply.

[0037] To better dissipate heat for the inverter assembly 200, please combine Figure 2 and Figure 4 In one embodiment, the circuit board 300 has an aluminum alloy layer 310 on one side facing away from the inverter assembly 200, and the aluminum alloy layer 310 is attached to the wall 105 of the installation cavity 104. In this embodiment, the circuit board 300 with the aluminum alloy layer 310 is prepared through the preparation process of the circuit board 300, and the circuit layer 330 is provided on one side of the circuit board 300 facing away from the aluminum alloy layer 310, which is used to be electrically connected to the inverter assembly 200, so that the circuit board 300 can realize the conduction of the inverter assembly 200 on the one hand, and on the other hand, the heat of the inverter assembly 200 is better conducted to the chassis 100, so as to achieve better heat dissipation.

[0038] More specifically, the circuit board 300 includes an insulating layer 320 and an aluminum alloy layer 310 connected to each other, the insulating layer 320 is provided with a circuit layer 330, and the circuit layer 330 is arranged on the side of the insulating layer 320 away from the aluminum alloy layer 310. The inverter component 200 is fixedly connected to the insulating layer 320 and electrically connected to the circuit layer 330. The circuit layer 330 is provided with electronic components for controlling the inverter component 200, thereby turning on and controlling the inverter component 200.

[0039] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A portable power source, characterized in that: It comprises a chassis, an inverter assembly and a circuit board; the chassis has an installation cavity, one side of the circuit board is connected to the inverter assembly, and the side of the circuit board facing away from the inverter assembly is attached to the wall of the installation cavity.

2. The portable power source according to claim 1, characterized in that: It also includes a frame, which is connected to the wall of the installation cavity and is connected to the circuit board and / or the inverter assembly.

3. The portable power source according to claim 2, characterized in that: A slot is formed between the frame and the chassis, and at least a portion of the edge of the circuit board is clamped in the slot.

4. The portable power source according to claim 1, characterized in that: The outer surface of the chassis is convex or concave with a heat dissipation structure.

5. The portable power source according to claim 1, characterized in that: The circuit board has an aluminum alloy layer on one side facing away from the inverter assembly, and the aluminum alloy layer is attached to the wall surface of the installation cavity.

6. The portable power source according to claim 1, characterized in that: It also includes a fan, which is arranged in the installation cavity.

7. The portable power source according to claim 1, characterized in that: The chassis comprises a box body and a box cover, the box body and the box cover are connected to form the installation cavity, and the circuit board is attached to the inner surface of the box body.

8. The portable power source according to claim 7, characterized in that: At least one of the box cover and the box body is provided with a waterproof socket, and the waterproof socket is electrically connected to the inverter assembly.

9. The portable power source according to claim 7, characterized in that: A sealing ring is arranged at the connection between the box body and the box cover.

10. The portable power source according to any one of claims 1 to 9, characterized in that: It also includes a bracket assembly, the chassis has a box top and a box bottom arranged relatively to each other, the bracket assembly includes a handle portion, a connecting portion and a leg portion connected in sequence, the connecting portion is connected to the chassis, the leg portion protrudes toward the box bottom, and the handle portion protrudes toward the box top.

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