Coupling structure of inverter and power bank

Abstract

The present invention relates to a combined structure of an inverter and a power bank that can be stably fixed in an electrically connected state, can supply current with high efficiency, and can easily form input and output terminals through insert injection molding. The structure comprises: an inverter including an inverter housing equipped with an AC socket, a first input terminal and a second input terminal respectively formed on one side and the other side of the lower rear surface of the inverter housing, and an inverter circuit disposed within the inverter housing that converts a DC voltage input through the first input terminal and the second input terminal into an AC voltage and outputs it through the AC socket; and a power bank disposed below the inverter, comprising a power bank housing equipped with a charging connector, a first output terminal and a second output terminal respectively formed on one side and the other side of the upper rear surface of the power bank housing, a plurality of batteries disposed within the power bank housing and connected in series, and a BMS circuit unit disposed within the power bank housing and connected to the plurality of batteries to output a DC voltage through the first output terminal and the second output terminal. It is characterized by comprising a rear fixing part including a first fixing busbar, the upper end of which is fixed to one input terminal of the inverter and the lower end of which is fixed to one output terminal of the power bank, and a second fixing busbar, the upper end of which is fixed to the other input terminal of the inverter and the lower end of which is fixed to the other output terminal of the power bank.

Description

Technology Field

[0001] The present invention relates to a combined structure of an inverter and a power bank that can be stably fixed in an electrically connected state, can supply current with high efficiency, and allows input and output terminals to be easily formed respectively through insert injection molding. Background Technology

[0002] Generally, power banks are portable energy storage devices that supply power to electronic devices requiring power in places without electricity supply, such as campsites and outdoor performance venues, as well as in homes during power outages.

[0003] In relation to such power banks, a docking-type mobile power bank with grid- and independent hybrid functions, including a docking-type battery power pack, has been proposed in Korean Patent Publication No. 10-2018-0049568.

[0004] The power bank proposed in the aforementioned Korean Patent Publication No. 10-2018-0049568, etc., provides DC power, so it can be directly connected to supply power to camping equipment that uses DC power; however, when supplying power to sound equipment in performance halls or household appliances that use AC, an inverter that converts the DC power of the power bank into AC power must be connected to the power bank.

[0005] Meanwhile, in the case of the aforementioned Korean published patent publication No. 10-2018-0049568, an inverter for independent charging via solar power is presented, but no details are provided regarding how the inverter is connected to a power bank and fixed in position. Prior art literature

[0007] Korean Patent Publication No. 10-2018-0049568 The problem to be solved

[0008] The present invention aims to provide a combined structure of an inverter and a power bank that can be stably fixed in an electrically connected state, can supply current with high efficiency, and allows input and output terminals to be easily formed respectively through insert injection molding. means of solving the problem

[0009] The present invention, for achieving the above-mentioned purpose, comprises: an inverter including an inverter housing equipped with an AC socket, a first input terminal and a second input terminal respectively formed on one side and the other side of the lower rear surface of the inverter housing, and an inverter circuit disposed within the inverter housing that converts a DC voltage input through the first input terminal and the second input terminal into an AC voltage and outputs it through the AC socket; and a power bank disposed below the inverter, comprising a power bank housing equipped with a charging connector, a first output terminal and a second output terminal respectively formed on one side and the other side of the upper rear surface of the power bank housing, a plurality of batteries disposed within the power bank housing and connected in series, and a BMS circuit unit disposed within the power bank housing and connected to the plurality of batteries to output a DC voltage through the first output terminal and the second output terminal. The present invention provides a coupling structure of an inverter and a power bank, characterized by comprising: a rear fixing part including a first fixing busbar, the upper end of which is fixed to one input terminal of the inverter and the lower end of which is fixed to one output terminal of the power bank, and a second fixing busbar, the upper end of which is fixed to the other input terminal of the inverter and the lower end of which is fixed to the other output terminal of the power bank.

[0010] Here, fixed protrusions protruding in the upward and downward directions of the inverter housing are formed at regular intervals from one side to the other on the upper and lower portions of the inverter housing, and fixed protrusions protruding in the upward and downward directions of the power bank housing are formed at regular intervals from one side to the other on the upper and lower portions of the power bank housing, and it is preferable that the fixed protrusion formed on the lower portion of the inverter housing and the fixed protrusion formed on the upper portion of the power bank housing engage with each other.

[0011] Furthermore, it is preferable that the front cover part comprises: an insertion hole formed in each of the front corner portions of the inverter housing and the front corner portions of the power bank housing, a front insertion groove formed in each of the front lower portions of one side of the inverter housing and the front lower portion of the other side, a front insertion shaft formed at regular intervals on one side of the front inner surface and the other side of the front inner surface, which is detachably inserted and fixed into the insertion hole formed in one side of the front lower portion and the other side of the front lower portion of the inverter housing and the insertion hole formed in one side of the front upper portion and the other side of the front upper portion of the power bank housing, respectively, and a front insertion projection formed on one side inner surface and the other side inner surface, which is detachably inserted and fixed into the front insertion groove of the inverter housing.

[0012] In addition, it is preferable that the rear portion of the inverter housing is formed by insert injection molding so that the one-sided input terminal and the other-sided input terminal are exposed to the rear, and that the rear portion of the power bank housing is formed by insert injection molding so that the one-sided output terminal and the other-sided output terminal are exposed to the rear.

[0013] Furthermore, screw holes are formed in the one-sided input terminal and the other-sided input terminal of the inverter and in the one-sided output terminal and the other-sided output terminal of the power bank, respectively; insertion holes are formed in the rear corner portions of the inverter housing and the rear corner portions of the power bank housing, respectively; rear insertion grooves are formed in the rear lower portions of the one-sided side and the other-sided lower portion of the inverter housing, respectively; and a fixing part is screw-coupled to the screw holes formed in the one-sided input terminal and the other-sided input terminal of the inverter and the one-sided output terminal and the other-sided output terminal of the power bank, respectively, while penetrating the one-sided fixing busbar and the other-sided fixing busbar; It is preferable that the device comprises a rear insertion shaft that is detachably inserted and fixed into an insertion hole formed on one lower side and the other lower side of the rear of the inverter housing and an insertion hole formed on one upper side and the other upper side of the rear of the power bank housing, respectively, and a rear insertion projection formed at regular intervals on one side and the other side of the rear inner surface after a receiving groove in which the head of the fixing part is received, which is detachably inserted and fixed into the rear insertion groove of the inverter housing, and a rear cover part that covers the one-side fixing busbar, the other-side fixing busbar, and the fixing part.

[0014] In addition, it is preferable that the above power bank comprises a plurality of units stacked vertically and a rear auxiliary fixing part including a first auxiliary fixing part having an upper end fixed to one side output terminal of one power bank and a lower end fixed to one side output terminal of another power bank located in the lower direction of one power bank, and a second auxiliary fixing part having an upper end fixed to the other side output terminal of one power bank and a lower end fixed to the other side output terminal of another power bank located in the lower direction of one power bank.

[0015] In addition, screw holes are formed in the one-sided output terminal and the other-sided output terminal of the power bank, respectively, and an auxiliary fixing part is screw-coupled to the screw holes of the one-sided output terminal and the other-sided output terminal of the power bank while penetrating the one-sided auxiliary fixing part bar and the other-sided auxiliary fixing part bar, respectively; and a finishing cap is formed on the inside to receive the head of the auxiliary fixing part and covers the one-sided auxiliary fixing part bar, the other-sided auxiliary fixing part bar, and the auxiliary fixing part.

[0016] In addition, the rear portion of the inverter housing is formed by insert injection molding so that the one-side input terminal and the other-side input terminal are respectively received in the exposed grooves formed on one side and the other side of the lower rear portion of the insert housing, and the rear portion of the power bank housing is formed by insert injection molding so that the one-side output terminal and the other-side output terminal are respectively received in the exposed grooves formed on one side, the other side, the one side, and the other side of the lower rear portion of the power bank, and the end cap is preferably inserted and fixed so as to be detachably fixed in the exposed grooves of the power bank. Effects of the invention

[0017] The present invention has the effect of enabling the inverter to be detachably and stably fixed to the upper part of a power bank for electrical connection through a rear fixing part, as well as enabling high-efficiency current supply from the power bank to the inverter, and also allowing the input terminals on one side and the other side of the inverter and the output terminals on one side and the other side of the power bank to be easily formed, respectively, through insert injection molding. Brief explanation of the drawing

[0018] FIG. 1 is a perspective view schematically showing a combined structure of an inverter and a power bank, which is an embodiment of the present invention. Figure 2 is an exploded view of Figure 1. Fig. 3 is an exploded perspective view seen from the bottom state of Fig. 1. FIG. 4 is a partially separated perspective view schematically showing the state in which the front cover part is separated from the inverter and the power bank. FIG. 5 is a rear perspective view schematically showing the front cover portion. FIG. 6 is a rear perspective view schematically showing the state in which the rear cover part is coupled to the inverter and power bank. FIG. 7 is a rear separation perspective view schematically showing the state in which the rear fixing part and the rear cover part are separated from the inverter and power bank. FIG. 8 is a perspective view schematically showing the rear cover portion. FIG. 9 is a perspective view schematically showing the rear cover of the power bank and the BMS circuit section. Figure 10 is a cross-sectional view along line A-A of Figure 9. Fig. 11 is an exploded view of Fig. 9. Figure 12 is a separated cross-sectional view along the line B-B of Figure 11. FIG. 13 is a rear separation perspective view schematically showing the state in which the auxiliary fixing part and the rear auxiliary fixing part are separated from a plurality of power banks. Figure 14 is a partial cross-sectional view along the line C-C of Figure 13. FIG. 15 is a rear separation perspective view schematically showing the state in which the end caps are separated from a plurality of power banks. Figure 16 is a partial separated cross-sectional view along the line D-D of Figure 15. FIG. 17 is a rear separation perspective view schematically showing the state in which a seal cap is attached to a plurality of power banks. Figure 18 is a cross-sectional view along the line E-E of Figure 17. FIG. 19 is a perspective view schematically showing the state in which an inverter is installed on the upper part of a plurality of power banks. Specific details for implementing the invention

[0019] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings. Of course, the scope of the present invention is not limited to the following embodiments, and various modifications can be made by those skilled in the art within the scope of the technical essence of the present invention.

[0020] FIG. 1 is a perspective view schematically showing a combined structure of an inverter and a power bank, which is an embodiment of the present invention.

[0021] As shown in FIG. 1, the combined structure of the inverter and power bank of the present invention is largely composed of an inverter (10), a power bank (20), and a rear fixing part.

[0022] First, the inverter (10) is intended to convert the DC voltage of the power bank (20) into AC voltage.

[0023] The above inverter (10) mainly comprises an inverter housing (110), one input terminal, another input terminal, and an inverter circuit.

[0024] FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is an exploded perspective view of FIG. 1 viewed from the bottom surface.

[0025] The inverter housing (110) may be configured to include, for example, an inverter housing body (111), an inverter front cover (112), and an inverter rear cover (113), as shown in FIGS. 1 to 3.

[0026] The inverter housing body (111) can be extruded from a metal material such as aluminum.

[0027] The inverter front cover (112) and the inverter rear cover (113) can be insert injection molded into the front and rear parts, respectively, of the inverter housing body (111).

[0028] The inverter front cover (112) and inverter rear cover (113) can be made of various materials such as synthetic resin.

[0029] An AC socket (100) may be provided on the other side opposite to one side of the front of the inverter front cover (112) of the inverter housing (110).

[0030] The above-mentioned one-sided input terminal and the above-mentioned other-sided input terminal may be formed on the lower one-sided and lower other-sided sides, respectively, of the rear surface of the inverter rear cover (113) of the inverter housing (110), and this will be explained in detail below for convenience of explanation.

[0031] Although the above inverter circuit is not shown in the drawing, it is positioned inside the inverter rear cover (113) of the inverter housing (110) and converts the DC voltage input through the one-sided input terminal and the other-sided input terminal into AC voltage and outputs it through the AC socket (100).

[0032] Next, the power bank (20) is intended to supply DC voltage to the inverter (10).

[0033] As shown in FIGS. 1 to 3, the above power bank (20) mainly comprises a power bank housing (210), one side output terminal, another side output terminal, a plurality of batteries, and a BMS circuit.

[0034] The above power bank housing (210) may be configured, for example, to include, mainly, a power bank housing body (211), a power bank front cover (212), and a power bank rear cover (213).

[0035] The above power bank housing body (211) can be extruded from a metal material such as aluminum.

[0036] The above power bank front cover (212) and power bank rear cover (213) can be insert injection molded into the front and rear parts, respectively, of the power bank housing body (211).

[0037] The front cover (212) and the rear cover (213) of the power bank can be made of various materials such as synthetic resin.

[0038] A charging connector (200 in FIG. 6) may be provided in the middle of the rear of the power bank rear cover (213) of the power bank housing (110).

[0039] A protective cap (201) that protects the charging connector (200) by housing it inside may be provided in the middle rear portion of the rear cover (213) of the power bank.

[0040] The protective cap (201) may be completely detached from the rear of the power bank rear cover (213), but to prevent the loss of the protective cap (201), the upper part of the protective cap (201) may be axially connected to the middle rear portion of the power bank rear cover (213) in the direction of the upper part of the charging connector (200).

[0041] The above-mentioned one-sided output terminal and the above-mentioned other-sided output terminal may be formed respectively on the upper one-sided and upper other-sided sides of the rear surface of the power bank rear cover (213) of the power bank housing (210) in a parallel-connected state, and this will be explained in detail below for convenience of explanation.

[0042] Although not shown in the drawing, the plurality of batteries can be arranged inside the power bank housing body (211) of the power bank housing (210) and connected in series.

[0043] The above BMS circuit section may be placed inside the rear cover (213) of the power bank of the power bank housing (210).

[0044] The above BMS circuit is connected to the plurality of batteries and can output a DC voltage through the one-side output terminal and the other-side output terminal.

[0045] One of the above power banks (20) can be placed at the bottom of the inverter (10) as shown in FIGS. 2 and FIGS. 3.

[0046] Next, in order to allow the inverter (10) and the power bank (20) to exchange heat with external air with high efficiency and to allow the inverter (10) to be stably fixed on the upper part of one of the power banks (20) without left-right slipping in one direction or the other direction of the power bank (20), as shown in FIGS. 2 and 3, it is preferable to form fixing protrusions (114, 214) on the upper and lower parts of the inverter (10) and on the upper and lower parts of the power bank (20), respectively.

[0047] The fixed projection (114) of the inverter (10) may be formed to protrude a certain length in the upper direction and lower direction of the inverter housing (110) from the upper side and upper other side, and lower side and lower other side of the inverter housing (110), respectively, and may be arranged at a certain interval from one side of the inverter housing (110) to the other side.

[0048] The fixed projection (214) of the power bank (20) may be formed to protrude a certain length in the upper direction and lower direction of the power bank housing (210) from the upper side and upper other side, and lower side and lower other side of the power bank housing (210), respectively, and may be arranged at a certain interval from one side of the power bank housing (210) to the other side.

[0049] The fixing projection (114) formed on the lower part of the inverter housing (110) and the fixing projection (214) formed on the upper part of the power bank housing (210) can be engaged.

[0050] FIG. 4 is a partially separated perspective view schematically showing the state in which the front cover part is separated from the inverter and the power bank, and FIG. 5 is a rear perspective view schematically showing the front cover part.

[0051] Next, as seen in FIGS. 1, 4 and 5, a front cover portion (22) for connecting the inverter (10) and one of the power banks (20) may be provided so that the inverter (10) is stably seated and fixed on the upper part of one of the power banks (20) without slipping in the front and rear directions of one of the power banks (20).

[0052] First, as shown in FIG. 4, insertion holes (101, 201) may be formed in each of the front corner portions of the inverter front cover (112) of the inverter housing (110) and each of the front corner portions of the power bank front cover (212) of the power bank housing (210).

[0053] Additionally, front insertion grooves (115) may be formed on the front lower side of one side and the front lower side of the other side of the inverter front cover (112) of the inverter housing (110).

[0054] As shown in FIG. 5, front insertion shafts (221) may be formed at regular intervals in the up and down direction of the front cover part (22) on one side of the front inner surface and the other side of the front inner surface of the front cover part (22).

[0055] The above-mentioned front insertion shaft (221) can be inserted and fixed in various ways, such as by force insertion, respectively, into the insertion hole (101) formed on one side of the front lower part and the other side of the front lower part of the inverter front cover (112) of the inverter housing (110) and the insertion hole (201) formed on one side of the front upper part and the other side of the front upper part of the power bank front cover (212) of the power bank housing (210).

[0056] One side and the other side of the above front cover portion (22) can be formed by bending them to a certain length in the rear direction of the inverter (10) and the rear direction of the power bank (20), respectively.

[0057] On one inner surface and the other inner surface of the above-mentioned front cover part (22), a front insertion projection (222) can be formed, which can be inserted and fixed in various ways, such as by force insertion, into the front insertion groove (115) of the inverter front cover (112) of the inverter housing (110), so as to be detachably inserted.

[0058] FIG. 6 is a rear perspective view schematically showing the rear cover portion coupled to the inverter and power bank, FIG. 7 is a rear separation perspective view schematically showing the rear fixing portion and the rear cover portion separated from the inverter and power bank, and FIG. 8 is a perspective view schematically showing the rear cover portion.

[0059] Next, as shown in FIG. 7, the inverter rear cover (113) can be formed by insert injection molding on the rear side of the inverter housing body (111) of the inverter housing (110) so that the one-sided input terminal (120) and the other-sided input terminal (130) of the inverter (10) can be exposed to the rear outer direction of the inverter (10), and an exposed groove (103) in which the one-sided input terminal (120) and the other-sided input terminal (130) of the inverter (10) are received is formed at a certain depth on the lower one-sided and lower other-sided sides of the inverter rear cover (113).

[0060] Additionally, the power bank rear cover (213) may be formed by insert injection molding on the rear side of the power bank housing body (211) of the power bank housing (210) so that the one-side output terminal (220) and the other-side output terminal (230) of the power bank (20) can be exposed to the rear outer direction of the power bank (20), and the exposure groove (203) in which the one-side output terminal (220) and the other-side output terminal (230) of the power bank (20) are received is formed to a certain depth on the upper side, upper side, lower side, and lower side of the power bank rear cover (213).

[0061] Next, the rear fixing part (30) is intended to guide the DC voltage output from the one-side output terminal (220) and the other-side output terminal (230) of the power bank (20) to the one-side input terminal (120) and the other-side input terminal (130) of the inverter (10) and to connect the inverter (10) and the power bank (20).

[0062] As shown in FIG. 7, the above rear fixing part (30) largely includes one side fixing busbar (310) and the other side fixing busbar (320).

[0063] The upper part of the above-mentioned one-sided fixed busbar (310) can be fixed to one-sided input terminal (120) of the inverter (10).

[0064] The lower end of the above-mentioned one-sided fixed busbar (310) can be fixed to one-sided output terminal (220) of the power bank (20).

[0065] The upper part of the other fixed busbar (320) can be fixed to the other input terminal (130) of the inverter (10).

[0066] The lower end of the other fixed busbar (320) can be fixed to the other output terminal (230) of the power bank (20).

[0067] Next, as shown in FIG. 7, screw holes (121, 131, 221, 231) may be formed in the middle portion of the one-sided input terminal (120) and the other-sided input terminal (130) of the inverter (10), and in the middle portion of the one-sided output terminal (220) and the other-sided output terminal (230) of the power bank (20), respectively.

[0068] In addition, insertion holes (102, 202) may be formed in each rear corner portion of the inverter rear cover (113) formed in the rear portion of the inverter housing body (111) of the inverter housing (110) and in each rear corner portion of the power bank rear cover (213) formed in the rear portion of the power bank housing body (211) of the power bank housing (210).

[0069] Furthermore, rear insertion grooves (116) may be formed on the lower rear side of one side and the lower rear side of the other side of the inverter rear cover (113) formed on the rear side of the inverter housing body (111) of the inverter housing (110).

[0070] In addition, a fixing part (3) may be provided to fix the upper and lower parts of the rear fixing part (30) to the one-side input terminal (120) and the other-side input terminal (130) of the inverter (10) and the one-side output terminal (220) and the other-side output terminal (230) of the power bank (20), respectively.

[0071] The above fixing part (3) can be made of various types, such as a fixing bolt that is screw-coupled to a screw hole (121, 131) formed in the one-side input terminal (120) and the other-side input terminal (130) of the inverter (10) and a screw hole (221, 231) formed in the one-side output terminal (220) and the other-side output terminal (230) of the power bank (20), while penetrating the upper middle and lower middle of the one-side fixing busbar (310) of the rear fixing part (30) and the upper middle and lower middle of the other-side fixing busbar (320), respectively.

[0072] Furthermore, as shown in FIGS. 6 to 8, a rear cover portion (24) for connecting the inverter (10) and one of the power banks (20) together with the front cover portion (22) may be provided so that the inverter (10) can be more stably fixed on the upper part of one of the power banks (20) without slipping in the front and rear directions of one of the power banks (20).

[0073] As shown in FIG. 8, a rear insertion shaft (241) and a receiving groove (243) may be formed at regular intervals in the vertical direction of the rear cover part (24) on one side of the rear inner surface and the other side of the rear inner surface of the rear cover part (24).

[0074] As shown in FIG. 7, the above rear insertion shaft (241) can be inserted and fixed in various ways, such as by force insertion, into the insertion hole (102) formed on the lower side of the rear side of the inverter rear cover (113) of the inverter housing (110) and the insertion hole (202) formed on the upper side of the rear side of the power bank rear cover (213) of the power bank housing (210).

[0075] The head (3a) of the fixing part (3) can be received in the receiving groove (243).

[0076] One side and the other side of the rear cover portion (24) can be formed by bending them to a certain length in the direction of the front of the inverter (10) and the front of the power bank (20), respectively.

[0077] On one inner surface and the other inner surface of the rear cover portion (24) above, a rear insertion projection (242) can be formed, which can be inserted and fixed in various ways, such as by force insertion, into the rear insertion groove (116) of the inverter rear cover (113) of the inverter housing (110) so as to be detachably inserted.

[0078] FIG. 9 is a perspective view schematically showing the rear cover of the power bank and the BMS circuit section, FIG. 10 is a cross-sectional view along line A-A of FIG. 9, FIG. 11 is an exploded perspective view of FIG. 9, and FIG. 12 is an exploded cross-sectional view along line B-B of FIG. 11.

[0079] As seen in FIGS. 9 to 12, each corner portion of the BMS circuit section (250) can be fixed to the inside of the rear cover (213) of the power bank (20) in various ways, such as by bolt fixing.

[0080] On one side and the other side of the above BMS circuit (250), a positive pole (251) and a negative pole (252) through which a large current can flow can be formed, respectively.

[0081] FIG. 13 is a rear separation perspective view schematically showing the state in which the auxiliary fixing part and the rear auxiliary fixing part are separated from a plurality of power banks, and FIG. 14 is a partial separation cross-sectional view along line C-C of FIG. 13.

[0082] Next, as shown in FIG. 13, the power bank (20) can be stacked in multiple numbers in the vertical direction of the power bank (20).

[0083] Additionally, a rear auxiliary fixing part (32) may be provided to guide the DC voltage output from the one-side output terminal (220) and the other-side output terminal (230) of the multiple vertically stacked power banks (20) to the one-side input terminal (120) and the other-side input terminal (130) of the inverter (10) and to connect the multiple vertically stacked power banks (20).

[0084] The above rear auxiliary fixing part (32) may include one side auxiliary fixing part bar (321) and the other side auxiliary fixing part bar (322).

[0085] As seen in FIGS. 13 and 14, the upper part of the one-sided auxiliary fixing part (321) can be fixed to one-sided output terminal (220) formed on one side of the lower rear of the power bank rear cover (213) of one of the power banks (20).

[0086] The lower end of the above-mentioned auxiliary fixing part (321) can be fixed to a one-side output terminal (220) formed on the upper rear side of the power bank rear cover (213) of another power bank (20) located in the lower direction of one power bank (20).

[0087] The upper part of the above-mentioned other side auxiliary fixing part (322) can be fixed to the other side output terminal (230) formed on the lower rear side of the power bank rear cover (213) of one of the power banks (20).

[0088] The lower end of the above-mentioned other side auxiliary fixing part (322) can be fixed to the other side output terminal (230) formed on the upper rear side of the power bank rear cover (213) of another power bank (20) located in the lower direction of one power bank (20).

[0089] In addition, an auxiliary fixing part (5) may be provided to position the one-sided auxiliary fixing part bar (321) and the other-sided auxiliary fixing part bar (322) of the rear auxiliary fixing part (32).

[0090] The above auxiliary fixing part (5) can be made of various types, such as a fixing bolt that is screw-coupled to the screw holes (221, 231) of the one-side output terminal (220) of the plurality of power banks (20) while penetrating the upper middle part and lower middle part of the one-side auxiliary fixing part bar (321) and the upper middle part and lower middle part of the other-side auxiliary fixing part bar (322), respectively.

[0091] FIG. 15 is a rear separation perspective view schematically showing the state in which the end caps are separated from a plurality of power banks, FIG. 16 is a partial separation cross-sectional view along the line D-D of FIG. 15, FIG. 17 is a rear separation perspective view schematically showing the state in which the end caps are coupled to a plurality of power banks, and FIG. 18 is a cross-sectional view along the line E-E of FIG. 17.

[0092] Next, as seen in FIGS. 15 to 18, a finishing cap (50) may be provided to protect the one-sided auxiliary fixing part bar (321), the other-sided auxiliary fixing part bar (322), and the auxiliary fixing part (5) while covering them.

[0093] A receiving groove (510) for receiving the head (5a) of the auxiliary fixing part (5) may be formed on the inner side of the above-mentioned end cap (50).

[0094] The above-mentioned end cap (50) can be inserted and fixed in various ways, such as by force insertion, so as to be detachably inserted into the exposed groove (203) of the power bank (20).

[0095] FIG. 19 is a perspective view schematically showing the state in which an inverter is installed on the upper part of a plurality of power banks.

[0096] As shown in FIG. 19, the inverter (10) can be fixedly mounted on the upper part of one of the power banks (20) located at the top of the power banks (20) that are stacked vertically in multiple numbers.

[0097] The present invention, configured as described above, has the advantage of being able to stably and detachably fix the inverter (10) to the upper part of the power bank (20) so as to be electrically connected through the rear fixing part (30), and also to supply current from the power bank (20) to the inverter (10) with high efficiency, as well as to easily form the one-sided input terminal (120) and the other-sided input terminal (130) of the inverter (10) and the one-sided output terminal (220) and the other-sided output terminal (230) of the power bank (20) respectively through insert injection molding. Explanation of the symbols

[0098] 10; Inverter, 20; Power bank, 30; rear fixing part.

Claims

Claim 1 An inverter comprising: an inverter housing equipped with an AC socket; a first input terminal and a second input terminal formed respectively on one side and the other side of the lower rear surface of the inverter housing; and an inverter circuit disposed within the inverter housing that converts a DC voltage input through the first input terminal and the second input terminal into an AC voltage and outputs it through the AC socket; a power bank disposed below the inverter, comprising: a power bank housing equipped with a charging connector; a first output terminal and a second output terminal formed respectively on one side and the other side of the upper rear surface of the power bank housing; a plurality of batteries disposed within the power bank housing and connected in series; and a BMS circuit unit disposed within the power bank housing and connected to the plurality of batteries to output a DC voltage through the first output terminal and the second output terminal; and a first fixed busbar whose upper end is fixed to the first input terminal of the inverter and whose lower end is fixed to the first output terminal of the power bank, and whose upper end is fixed to the second input terminal of the inverter and whose lower end is to the second output terminal of the power bank Rear fixing part including a fixed other-side fixing busbar;A combined structure of an inverter and a power bank comprising: an inverter housing and a power bank housing, wherein the inverter housing and the power bank housing each comprise a housing body extruded from a metal material and a front cover and a rear cover inserted injection-molded from a resin material and joined to the front and rear portions of the housing body, respectively; wherein the BMS circuit is mounted on the inner surface of the rear cover of the power bank housing and fixed integrally; wherein cable wiring for power transmission between the inverter and the power bank is excluded and the terminals are directly engaged and joined through the fixed busbar, forming a modular separation structure; wherein a plurality of fixing protrusions that interlock and are fixed to each other are formed on the upper and lower portions of the inverter housing and the power bank housing, and the fixing protrusions form a heat dissipation fin structure that expands the contact area with external air to release internal heat. Claim 2 A coupling structure of an inverter and a power bank according to claim 1, wherein fixing protrusions protruding in the upper and lower directions of the inverter housing are formed at regular intervals from one side of the inverter housing to the other side, and fixing protrusions protruding in the upper and lower directions of the power bank housing are formed at regular intervals from one side of the power bank housing to the other side, and the fixing protrusion formed on the lower part of the inverter housing and the fixing protrusion formed on the upper part of the power bank housing are engaged. Claim 3 A coupling structure of an inverter and a power bank according to claim 1, comprising: an insertion hole formed in each of the front corner portions of the inverter housing and the front corner portions of the power bank housing; a front insertion groove formed in each of the front lower portions of one side of the inverter housing and the front lower portion of the other side of the inverter housing; a front insertion shaft formed at regular intervals on one side of the front inner surface and the other side of the front inner surface, which is detachably inserted and fixed into the insertion hole formed in the front lower portion of the inverter housing and the insertion hole formed in the front upper portion of the power bank housing and the front upper portion of the power bank housing, and a front insertion projection formed on the inner surface of one side and the inner surface of the other side, which is detachably inserted and fixed into the front insertion groove of the inverter housing. Claim 4 A combined structure of an inverter and a power bank according to claim 1, characterized in that the rear portion of the inverter housing is formed by insert injection molding so that the one-sided input terminal and the other-sided input terminal are exposed to the rear, and the rear portion of the power bank housing is formed by insert injection molding so that the one-sided output terminal and the other-sided output terminal are exposed to the rear. Claim 5 In claim 4, screw holes are formed in the one-sided input terminal and the other-sided input terminal of the inverter and in the one-sided output terminal and the other-sided output terminal of the power bank, respectively; insertion holes are formed in the rear corner portions of the inverter housing and the rear corner portions of the power bank housing, respectively; rear insertion grooves are formed in the rear lower portions of one side and the other side of the inverter housing, respectively; a fixing part that is screw-coupled to the screw holes formed in the one-sided input terminal and the other-sided input terminal of the inverter and the one-sided output terminal and the other-sided output terminal of the power bank while penetrating the one-sided fixing busbar and the other-sided fixing busbar, respectively; a rear insertion shaft that is detachably inserted and fixed into the insertion holes formed in the rear lower portions of the one-sided and the other-sided lower portions of the inverter housing and the insertion holes formed in the rear upper portions of the one-sided and the other-sided upper portions of the power bank housing, respectively; and a receiving groove in which the head of the fixing part is received, which is formed at regular intervals on one side of the inner surface of the rear side and the other side of the inner surface of the rear side, and one side A coupling structure of an inverter and a power bank, characterized by comprising: a rear insertion projection formed on an inner surface and another inner surface that is detachably inserted and fixed into a rear insertion groove of the inverter housing, and a rear cover portion that covers the one-sided fixing busbar, the other-sided fixing busbar, and the fixing portion. Claim 6 A combined structure of an inverter and a power bank according to claim 1, wherein the power bank is stacked vertically in multiple numbers and comprises a rear auxiliary fixing part including a first auxiliary fixing part in which the upper end is fixed to one side output terminal of one power bank and the lower end is fixed to one side output terminal of another power bank located in the lower direction of one power bank, and a second auxiliary fixing part in which the upper end is fixed to the other side output terminal of one power bank and the lower end is fixed to the other side output terminal of another power bank located in the lower direction of one power bank. Claim 7 A coupling structure of an inverter and a power bank according to claim 6, wherein screw holes are formed in one side output terminal and the other side output terminal of the power bank, respectively, and an auxiliary fixing part is screw-coupled to the screw holes of the one side output terminal and the other side output terminal of the power bank while penetrating the one side auxiliary fixing part bar and the other side auxiliary fixing part bar, respectively; and a finishing cap that covers the one side auxiliary fixing part bar, the other side auxiliary fixing part bar, and the auxiliary fixing part, wherein a receiving groove is formed on the inside to receive the head of the auxiliary fixing part. Claim 8 A coupling structure of an inverter and a power bank according to claim 7, wherein the rear portion of the inverter housing is formed by insert injection molding so that the one-side input terminal and the other-side input terminal are respectively received in exposed grooves formed on one side of the lower rear portion and the other side of the lower rear portion of the inverter housing, and the rear portion of the power bank housing is formed by insert injection molding so that the one-side output terminal and the other-side output terminal are respectively received in exposed grooves formed on one side of the upper rear portion, the other side of the upper rear portion, one side of the lower rear portion, and the other side of the lower rear portion of the power bank, and the end cap is respectively detachably inserted and fixed in the exposed grooves of the power bank.

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