Draw-bar box type energy storage power supply device

Abstract

The utility model relates to the technical field of battery design, in particular to a draw-bar box type energy storage power supply device which comprises a draw-bar box cover, a top cover, a draw-bar box cavity and a power supply device, the top cover and the draw-bar box cavity form a closed box body, and the draw-bar box cover is arranged outside the closed box body and located above the top cover. According to the scheme, the bent structure and the heat dissipation grid are designed to form a directional air duct, the built-in miniature fan is matched, efficient heat dissipation is achieved, compared with a traditional passive heat dissipation mode, the heat dissipation efficiency is improved by 40% or above, the internal temperature of equipment is effectively reduced, and the risk of thermal runaway of a battery is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to portable power supply design field especially relates to a draw-bar box type energy storage power supply device. BACKGROUND

[0002] With the increase of mobile energy demand, portable power supply equipment gradually becomes important equipment in outdoor activities, emergency power supply and other scenes. At present, the portable power supply equipment on the market mainly adopts independent modular design, such as mobile power supply, charger and the like, which usually needs to be connected and used through external cable. Although this mode has certain flexibility, it also has the following problems: first, multiple independent components are stored separately, which is inconvenient to carry; second, external cable increases the use complexity, which is not convenient for quick access; in addition, multiple components are stored independently, which is easy to lose or damage, affecting the use experience.

[0003] In order to improve the integration of portable power supply equipment, the draw-bar box type mobile power supply scheme has gradually attracted attention in recent years. This scheme tries to embed the power supply equipment into the draw-bar box inside to form an integrated structure, so that it has both the portability of traditional draw-bar box and can provide stable power output. The draw-bar box type mobile power supply usually adopts large capacity battery pack and combines draw-bar and roller design to meet the needs of outdoor travel, camping, self-driving tour and emergency power supply and other scenes. At the same time, such equipment is generally equipped with basic power supply interfaces, such as battery charging interface, DC output interface, etc., which supports multiple devices to be powered at the same time.

[0004] However, the existing draw-bar box type mobile power supply still has some technical problems in structure design. First, the heat dissipation efficiency is low. Since the battery pack and the heating elements such as inverter usually adopt stacked layout, heat is easy to accumulate, which leads to overheating of the equipment, thereby affecting the power supply stability and service life. In addition, the design of fully enclosed box further hinders the dissipation of heat, making the heat dissipation problem more prominent. Secondly, the battery maintenance is difficult. The existing scheme mostly adopts integrated packaging, which makes the battery cell cannot be replaced individually. Once the battery is aged or damaged, the whole power supply module needs to be replaced, which increases the use cost and is not conducive to environmental protection and long-term use. UTILITY MODEL CONTENTS

[0005] Based on the above problems, the utility model provides a draw-bar box type energy storage power supply device, which improves the maintainability and heat dissipation performance of the equipment through modular replaceable structure design and directional air duct heat dissipation system, solves the problems of low heat dissipation efficiency, lack of active heat dissipation and inconvenient battery replacement in the prior art, and further improves the portability, safety and service life.

[0006] The utility model realizes the following technical scheme:

[0007] A kind of trolley case type energy storage power supply device, including trolley case lid, top cover, trolley case cavity and power supply device, the top cover is formed closed box with trolley case cavity, the trolley case lid is arranged outside closed box and is located above top cover, the power supply device is arranged inside closed box and is located below top cover.

[0008] Further, the power supply device includes charger, DCDC voltage regulator board, DCDC top cover, shunt, DCDC mounting, shunt insulation mounting piece, battery pack, ACDC switching power supply, the charger is arranged at one side of the closed box, the DCDC top cover is fixedly installed on the top of DCDC mounting, the shunt insulation mounting piece is fixedly connected to one side of DCDC mounting, the shunt is arranged on the shunt insulation mounting piece, the DCDC voltage regulator board is arranged on the top of DCDC mounting and is located between DCDC top cover and DCDC mounting, the battery pack is arranged below DCDC mounting, and the ACDC switching power supply is arranged at one side of the battery pack.

[0009] Further, it further includes battery tray and mounting bottom support, the mounting bottom support is fixed to the bottom of closed box by nut, the battery tray is fixed to the mounting bottom support by nut, the battery pack is fixed to the battery tray, and the ACDC switching power supply is fixed to the battery tray.

[0010] Further, a plurality of through holes are formed in the side wall of the trolley case cavity, and a plurality of the through holes are respectively provided with heat dissipation fan, pin-shaped AC input female seat, DC output plug, voltmeter and ammeter.

[0011] The input end of the heat dissipation fan is connected to the 12V auxiliary power output of the DCDC voltage regulator board, the pin-shaped AC input female seat is inserted into the AC power input into the ACDC switching power supply input end, the DC output plug is connected to the DC output end of the DCDC voltage regulator board, the voltmeter is connected to the DC output port of the DCDC voltage regulator board, and the ammeter is connected to the shunt.

[0012] Further, the DCDC top cover includes a rectangular sheet metal structure formed by bending four edges downward, and a pair of edges of the DCDC top cover is bent and then bent outward to form a sheet, and a through hole for fixedly connecting the DCDC mounting and the shunt insulation mounting piece is formed in the sheet.

[0013] Further, the DCDC mounting includes a structure formed by bending sheet metal, and the two sides of the DCDC mounting are bent and then bent outward to form a sheet, a through hole for connecting the battery tray is formed in the sheet, and the DCDC mounting is provided with a press-in nut, a press-in stud and a press-in through hole stud.

[0014] Further, the mounting base includes a sheet metal bending structure, a plurality of through holes are arranged on the mounting base, and a press rivet nut is riveted on the plurality of through holes, and is used for connecting other structures and the cavity of the draw-bar box.

[0015] Further, the battery tray includes a sheet metal piece with three edges bent to form a structure, a plurality of through holes are arranged on the battery tray, and a press rivet nut is riveted on the plurality of through holes, and the battery pack is embedded in the inside of the battery tray.

[0016] The utility model discloses beneficial effects:

[0017] (1) the utility model discloses a draw-bar box type energy storage power supply device forms the directional air channel with the heat dissipation grid through the bending structure of DCDC top cover, and realizes high -efficient heat dissipation with the built -in micro -fan, compares with traditional passive heat dissipation mode, and the heat dissipation efficiency promotes 40% or more, effectively reduces the temperature in the equipment, and reduces the risk of battery thermal runaway;

[0018] (2) the utility model discloses a draw-bar box type energy storage power supply device, and the battery pack and DCDC module are arranged in layers, avoid heat concentration and accumulation, and the opening design of the battery limiting structure enhances air circulation, further reduces the probability of local high temperature, improves the stability and safety of system operation;

[0019] (3) the utility model discloses a draw-bar box type energy storage power supply device, and the detachable design of battery tray and mounting base makes the battery pack convenient to replace, and users do not need to scrap the whole equipment, reduces the maintenance cost, improves the environmental protection and service life of the equipment;

[0020] (4) the utility model discloses a draw-bar box type energy storage power supply device, through the design of press rivet nut and press rivet stud, the PCB board and other electronic devices can be quickly disassembled, replaced and maintained, improve the maintainability of the equipment, reduce the maintenance time and cost;

[0021] (5) the utility model discloses a draw-bar box type energy storage power supply device, has battery charging, DC output and other interfaces, and supports DCDC voltage stabilization, battery output control and voltage display functions, meets the demand of multiple equipment power supply at the same time, improves the application range and practical value of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will briefly introduce the drawing needed to be used in the embodiment description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for ordinary skilled person in the art, other drawings can be obtained according to these drawings without paying the creative labor.

[0023] Figure 1The utility model provides a kind of overall structural diagram of trolley case type energy storage power supply device proposed by the utility model;

[0024] Figure 2 The utility model provides a kind of internal fixed structure schematic view of trolley case type energy storage power supply device proposed by the utility model;

[0025] Figure 3 The utility model provides a kind of overall structure explosion drawing of trolley case type energy storage power supply device proposed by the utility model;

[0026] Figure 4 The utility model provides a kind of internal fixed structure and box combination schematic view of trolley case type energy storage power supply device proposed by the utility model;

[0027] In the drawing, 1-trolley case lid, 2-top cover, 3-charger, 4-DCDC voltage stabilizing plate, 5-DCDC top cover, 6-shunt, 7-DCDC mounting piece, 8-shunt insulation mounting piece, 9-battery pack, 10-ACDC switching power supply, 11-radiating fan, 12-pyramid AC input female seat, 13-battery tray, 14-battery switch, 15-direct current output aviation plug, 16-voltmeter, 17-mounting bottom support, 18-trolley case cavity, 19-current meter. DETAILED DESCRIPTION

[0028] To make the purpose, technical scheme and advantage of the utility model more clear and obvious, the utility model is further explained in detail below by combining with embodiment and drawing, and the illustrative embodiment of the utility model and its explanation are only used to explain the utility model, and not as the limitation to the utility model. EMBODIMENT

[0029] REFERENCE Figures 1-4 The embodiment proposes a kind of trolley case type energy storage power supply device.

[0030] The device includes trolley case lid 1, top cover 2, trolley case cavity 18, power supply device, battery tray 13, mounting bottom support 17 etc., wherein, top cover 2 is connected with trolley case cavity 18 by screw or hinge, forms closed box, plays the role of fixed and protection internal power supply device, trolley case lid 1 is installed outside closed box by hinge, and is located top cover 2 top, can be opened to facilitate equipment maintenance.

[0031] Mounting bottom support 17 is formed by sheet metal bending, is fixed in the bottom of closed box by nut, provides firm support structure;

[0032] Battery tray 13 is formed by rectangular sheet metal piece three edge bending, is fixed on mounting bottom support 17 by nut, and preformed mounting hole is used for riveting rivet nut, so as to fix battery pack 9 and ACDC switching power supply 10;

[0033] The battery pack 9 is embedded inside the battery tray 13 and fixed by bolts or buckles to ensure the stability of the battery pack and avoid damage caused by vibration during movement; the ACDC switching power supply 10 is fixed on the battery tray 13 and used to convert AC power into DC power to provide charging power for the battery pack 9; the charger 3 is installed on one side of the closed box and fixed by screws or buckles to facilitate connection with external power supply.

[0034] The DCDC top cover 5 is formed by bending the four edges of a rectangular sheet metal piece downward, and the edges on both sides of the cover are bent outward to form a thin sheet, and a through hole is formed on the thin sheet for fixing the DCDC mounting member 7 and the shunt insulating mounting sheet 8.

[0035] The DCDC mounting member 7 is formed by bending sheet metal, and the two sides are bent outward to form a thin sheet, and a through hole is reserved on the thin sheet for mounting the battery tray 13 and other electronic devices, and the modular installation is realized by pressure riveting nuts, pressure riveting studs and pressure riveting through-hole studs;

[0036] The DCDC voltage stabilizing plate 4 is arranged on the top of the DCDC mounting member 7, between the DCDC top cover 5 and the DCDC mounting member 7, and forms a power supply relationship with the battery pack 9 and the ACDC switching power supply 10;

[0037] The shunt 6 is installed on the shunt insulating mounting sheet 8, and the shunt insulating mounting sheet 8 is fixed on the side of the DCDC mounting member 7, which plays a role in stable fixation and insulation protection.

[0038] A plurality of through holes are formed on the side wall of the pull rod box cavity 18, which are used to install components such as heat dissipation fans 11, a pin-shaped AC input female seat 12, a DC output aviation plug 15, a voltmeter 16, etc., to improve the heat dissipation efficiency and functional expandability of the system;

[0039] The heat dissipation fan 11 is installed in the through hole to form a directional air duct heat dissipation system, which realizes forced heat dissipation in combination with the bending structure of the DCDC top cover 5 and the heat dissipation grille; the voltmeter 16 is installed on the through hole of the side wall and used to monitor the battery voltage state in real time. The pin-shaped AC input female seat 12 is used to connect external AC power supply to supply power to the ACDC switching power supply 10; the DC output aviation plug 15 is used for DC power output of external equipment and is suitable for various scenes.

[0040] The device adopts a reasonable electric energy transmission path, which makes the energy conversion efficient and safe, and mainly involves the following electrical connection relationships: the input end of the ACDC switching power supply 10 is connected to the pin-shaped AC input female seat 12, and AC220V AC power is input from the external power supply. The output end of the ACDC switching power supply 10 is connected to the charger 3 and the battery pack 9, which converts AC power into DC power to provide charging for the battery pack.

[0041] The input end of the battery pack 9 receives the DC power of the ACDC switching power supply 10 to realize charging, and the output end of the battery pack 9 is connected to the power conversion circuit inside the DCDC top cover 5 through the DCDC voltage stabilizing board 4 to convert high-voltage DC into stable DC output of different voltages, distribute the electric energy through the current distributor 6, and provide the required power supply for different devices through the DC output aviation plug 15.

[0042] The input end of the DCDC voltage stabilizing board 4 receives the DC power provided by the battery pack 9, and the output end of the DCDC voltage stabilizing board 4 is connected to the current distributor 6 for current distribution and detection of the ammeter 19, and the insulating mounting piece 8 plays a role of isolation to prevent short circuit or electromagnetic interference.

[0043] The power supply of the cooling fan 11 is supplied by the DCDC voltage stabilizing board 4 to ensure that the device always maintains good cooling state during operation, and the layout of the fan forms a directional air duct structure with the DCDC top cover 5 to improve the cooling efficiency by more than 40%.

[0044] The overall working process of the device according to the embodiment is as follows:

[0045] The user connects the external power supply, the ACDC switching power supply 10 converts the AC power into DC power, and charges the battery pack 9 through the charger 3, and during the charging process, the battery voltage state can be monitored in real time through the voltmeter 16.

[0046] When the external power supply is disconnected, the battery pack 9 outputs stable DC power through the DCDC voltage stabilizing board 4 to supply external devices, reasonably distributes the power demand of different devices through the current distributor 6, and outputs to external devices through the DC output aviation plug 15.

[0047] The fan starts to force cooling to maintain the operation of the device within a safe temperature range. Embodiment

[0048] The embodiment proposes a specific structure of the box body structure based on the embodiment 1.

[0049] Specifically:

[0050] The trolley case box body is made of plastic, adopts a semi-closed cavity structure, is provided with a top cover 2, has an average thickness of 4.5 mm, and has overall dimensions of 355 mm in width, 558 mm in height, and 212 mm in depth. The box body is provided with a plurality of mounting through holes, including a circular through hole of the cooling fan 11, a circular mounting hole of the DC output aviation plug 15, a trapezoidal mounting hole of the pin-shaped AC input female seat 12, a circular mounting hole of the voltmeter 16, and a screw fixing hole with a diameter of 4 mm.

[0051] The mounting base 17 is made of sheet metal bending part, with size of 350mm in length, 250mm in width and 20mm in height, with 4.5mm through hole and riveted M4 rivet nut, so as to connect other structural parts with the box.

[0052] The battery tray 13 is made of 1mm thick rectangular aluminum sheet metal part, with size of 345mm in length, 265mm in width and 16mm in height, with M6 and M4.5 through hole, and riveted M4 rivet nut at M4.5 through hole. The battery is embedded in the groove of the tray, and is fixed by four-way limiting of the bending structure of the DCDC mounting part 7. The ACDC switching power supply 10 is fixed on the battery tray 13 through M4.5 through hole and M4 screw.

[0053] The DCDC mounting part 7 is made of 1mm thick sheet metal part, with two sides first bending 78mm, and then bending 15mm outward twice to form a thin sheet, with 4.5mm and 5mm through hole on the thin sheet for connecting the battery tray 13. The remaining two sides are bent 74mm and 94mm respectively. The mounting part is provided with M4 rivet nut, M3 rivet stud and M3 rivet through hole stud. The charger 3 is fixed by M4 rivet nut and M4 screw, and the DCDC voltage stabilizing plate 4 is fixed by M3 rivet through hole stud. The insulating mounting piece is fixed on the DCDC mounting part 7 by M4 screw and M4 rivet nut on the mounting base 17, and the shunt 6 is fixed on the insulating mounting piece by M6 screw and M6 rivet nut on the mounting base 17.

[0054] The DCDC top cover 5 is made of 1.2mm thick 5052 aluminum sheet metal part, with size of 210mm in length, 240mm in width and 68mm in height. The four edges are bent downward, one pair of edges is bent 68mm, then bent 15mm outward to form a thin sheet, with 4.5mm through hole, and is fixed with the DCDC mounting part 7 and the shunt insulating mounting piece 8. The middle excess bending part is optimized by cutting. The other two sides are bent 29mm, and are fixed on the DCDC mounting part 7 by M3 rivet stud.

[0055] The top cover 2 is made of 1mm thick 5052 aluminum sheet metal part, with size of 506mm in length and 286mm in width, and four edges are bent downward 25mm, with 4.5mm fixing through hole, so as to be fixed and connected with the DCDC top cover 5.

[0056] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. The skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A trolley case type energy storage power supply device characterized by comprising: The utility model relates to a kind of trolley case, including trolley case cover, top cover, trolley case cavity and power device, the top cover is closed with trolley case cavity Box, the trolley case cover is arranged outside closed box and is located above top cover, the power device is arranged inside closed box and is located below top cover; The power device includes charger, DCDC voltage regulator board, DCDC top cover, shunt, DCDC mounting, shunt insulation mounting piece, battery pack, ACDC switching power supply, the charger is arranged in one side of the closed box, the DCDC top cover is fixedly installed on the top of DCDC mounting, the shunt insulation mounting piece is fixedly connected to one side of DCDC mounting, the shunt is arranged on the shunt insulation mounting piece, the DCDC voltage regulator board is arranged on the top of DCDC mounting and is located between DCDC top cover and DCDC mounting, the battery pack is arranged below DCDC mounting, and the ACDC switching power supply is arranged on one side of the battery pack; It further includes battery tray and mounting bottom support, the mounting bottom support is fixed to the bottom of closed box by nut, the battery tray is fixed to the mounting bottom support by nut, the battery pack is fixed to the battery tray, and the ACDC switching power supply is fixed to the battery tray; The DCDC top cover includes rectangular sheet metal piece, and the four edges of the DCDC top cover are bent downward to form structural members, one pair of edges of the DCDC top cover is bent and then bent outward to form a sheet, and a through hole for fixedly connecting the DCDC mounting and the shunt insulation mounting piece is formed in the sheet. The DCDC mounting includes a structural member formed by bending a sheet metal piece, and the two sides of the DCDC mounting are bent and then bent outward to form a sheet, a through hole for connecting the battery tray is formed in the sheet, and a press-in nut, a press-in stud, and a press-in through-hole stud are arranged on the DCDC mounting.

2. The trolley case type energy storage power supply device according to claim 1, characterized by, A plurality of through holes are formed in the side wall of the trolley case cavity, and a plurality of the through holes are respectively provided with a cooling fan, a triangular AC input female socket, a DC output aviation plug, a voltmeter, and an ammeter. The input end of the cooling fan is connected to the 12V auxiliary power output of the DCDC voltage regulator board, the triangular AC input female socket is inserted into the AC power input end of the ACDC switching power supply, the DC output aviation plug is connected to the DC output end of the DCDC voltage regulator board, the voltmeter is connected to the DC output port of the DCDC voltage regulator board, and the ammeter is connected to the shunt.

3. The trolley case energy storage power supply device of claim 1, wherein, The mounting bottom support includes a structural member formed by bending a sheet metal piece, a plurality of through holes are formed in the mounting bottom support, and a press-in nut is riveted in the plurality of through holes to connect other structures and the trolley case cavity.

4. The trolley case energy storage power supply device of claim 1, wherein, The battery tray includes a structural member formed by bending three edges of a rectangular sheet metal piece, a plurality of through holes are formed in the battery tray, and a press-in nut is riveted in the plurality of through holes, and the battery pack is embedded in the inside of the battery tray.

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