Liquid cooling over-charging control system

Abstract

The invention discloses a liquid cooling over-charging control system, and belongs to the technical field of electric vehicle chargers. Comprising an AC module, a control module, a power module and a DC output module. The alternating current module is used for accessing alternating current to supply power to the control module and the power module; the direct current output module comprises a positive copper bar group, a negative copper bar group, a positive direct current contactor group, a negative direct current contactor group and an annular copper bar group; the direct current output anode of the power supply module is connected with the anode copper bar and is connected with the anode of the terminal external unit through the anode copper bar; the direct-current output cathode of the power supply module is connected with the cathode copper bar and is connected with the cathode of the terminal external unit through the cathode copper bar; and the control module controls the on-off of the positive pole direct current contactor group and the negative pole direct current contactor group according to the charging power switching signal so as to switch the charging power. The high-power charging mode and the low-power charging mode can be switched, resources are fully utilized, and efficient charging is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of electric vehicle chargers, and in particular relates to a liquid-cooled supercharging control system. Background Art

[0002] With the development of science and technology, the application of new energy electric vehicles is becoming more and more extensive, and the demand for charging electric vehicles is also increasing. High-power fast charging is loved by more and more people and is the future development trend of electric vehicle charging piles.

[0003] At present, the DC output current of conventional chargers is small, the corresponding output charging gun has low power, and the charging efficiency is low. At the same time, most conventional chargers only have one charging power, which is not universal enough and difficult to be applied to multiple charging scenarios. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a liquid-cooled supercharger charging control system that can switch between high-power and low-power charging modes, fully utilize resources, and charge efficiently.

[0005] The present invention provides the following technical solutions: A liquid-cooled supercharge charging control system comprises an AC module, a control module, a power module and a DC output module; the AC module is connected to the control module and the power module, and is used to access AC power to power the control module and the power module; the DC output module comprises a positive copper bar group, a negative copper bar group, a positive DC contactor group, a negative DC contactor group and a ring copper bar group; the positive copper bar group and the negative copper bar group are respectively connected to the positive DC contactor group and the negative DC contactor group through the ring copper bar group; the power module is used to convert AC power into DC power, the DC output positive pole of the power module is connected to the positive copper bar, and is connected to the positive pole of the terminal external unit through the positive copper bar; the DC output negative pole of the power module is connected to the negative copper bar, and is connected to the negative pole of the terminal external unit through the negative copper bar; the input end of the control module receives a charging power switching signal, and the output end is connected to the positive DC contactor group and the negative DC contactor group, and is used to control the on and off of the positive DC contactor group and the negative DC contactor group according to the charging power switching signal to switch the charging power.

[0006] As an optional technical solution of the present invention, the DC output module also includes a mounting frame, which includes a bottom mounting plate, an upper mounting plate, a side mounting plate and a terminal guide rail; the upper mounting plate is arranged above the mounting surface of the bottom mounting plate, and the side mounting plates are fixed to both sides of the upper mounting plate; the terminal guide rail is fixed to the middle of the mounting surface of the bottom mounting plate.

[0007] As an optional technical solution of the present invention, a positive DC contactor group and a negative DC contactor group are respectively fixed on the bottom mounting plate and the upper mounting plate; the positive DC contactor group and the negative DC contactor group each include 5 DC contactors, and the DC contactors on the bottom mounting plate and the upper mounting plate are correspondingly arranged.

[0008] As an optional technical solution of the present invention, the terminal rail is located between the positive DC contactor group and the negative DC contactor group, and 5 terminal groups are fixed on the terminal rail through terminal limit cards, and the output end of each terminal group is respectively connected to the mounting plate and the DC contactor on the upper mounting plate; the control module is connected to the DC contactor through the terminal group.

[0009] As an optional technical solution of the present invention, the terminal block group includes four 1-input and 2-output terminal blocks.

[0010] As an optional technical solution of the present invention, insulating brackets are fixed on both the positive copper bar group and the negative copper bar group.

[0011] As an optional technical solution of the present invention, the annular copper bar group includes a first connecting copper bar, a second connecting copper bar, a transfer copper bar and a third connecting copper bar; the first connecting copper bar and the second connecting copper bar are fixed on the DC contactor, and the second connecting copper bar is located between the first connecting copper bars; the transfer copper bar is fixed to the bottom of the first connecting copper bar, and both ends of the third connecting copper bar are respectively fixed to the bottom of the transfer copper bar.

[0012] As an optional technical solution of the present invention, the positive copper bar group includes a liquid-cooled gun copper bar positive electrode and an ordinary gun copper bar positive electrode; the negative copper bar group includes a liquid-cooled gun copper bar negative electrode and an ordinary gun copper bar negative electrode; the liquid-cooled gun copper bar positive electrode and the liquid-cooled gun copper bar negative electrode are respectively fixed on the first connecting copper bar on the same side, and the ordinary gun copper bar positive electrode and the ordinary gun copper bar negative electrode are respectively fixed on the second connecting copper bar; the bottoms of the liquid-cooled gun copper bar positive electrode, the liquid-cooled gun copper bar negative electrode, the ordinary gun copper bar positive electrode and the ordinary gun copper bar negative electrode are all fixed by insulators.

[0013] As an optional technical solution of the present invention, the positive electrode and negative electrode of the liquid cooling gun copper bar are respectively connected to the positive electrode and negative electrode of the liquid cooling terminal external unit; the positive electrode and negative electrode of the ordinary gun copper bar are respectively connected to the positive electrode and negative electrode of the conventional terminal external unit.

[0014] As an optional technical solution of the present invention, it also includes a super-full integrated cabinet, and the AC module, control module, power module and DC output module are all arranged inside the super-full integrated cabinet.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The liquid-cooled supercharging control system provided by the present invention controls the on and off of the positive DC contactor group and the negative DC contactor group in the DC output module through the control module, and cooperates with the annular copper busbar group to implement the switching of the charging efficiency. It can not only realize that each DC power is charged to the battery or the car separately, but also realize that multiple DC powers are aggregated into one output to the liquid-cooled charging gun, which is convenient for random deployment according to on-site needs, makes full use of the resources inside the charger, improves the charging efficiency, and is suitable for a variety of charging scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a front schematic diagram of a super-full integrated cabinet in an embodiment of the present invention; Figure 2 is a schematic diagram of the reverse side of the super-full integrated cabinet in an embodiment of the present invention; Figure 3 is a plan view of a DC output module state in an embodiment of the present invention; Figure 4 is a bottom view of a DC output module in an embodiment of the present invention; Figure 5 is a top view of a DC output module in an embodiment of the present invention; Figure 6 is a schematic diagram of a charging control system in an embodiment of the present invention; Figure 7 is a positive electrode principle diagram of a charging control system in an embodiment of the present invention; Figure 8 It is a negative electrode principle diagram of a charging control system in an embodiment of the present invention.

[0017] The markings in the figure are: 10, super-full integrated cabinet; 11, AC module; 12, control module; 13, power module; 14, DC output module; 15, blind plate; 100, bottom mounting plate; 101, upper mounting plate; 102, side mounting plate; 103, terminal rail; 104, insulator fixing; 200, DC contactor; 201, terminal block; 202, terminal limit card; 203, insulating bracket; 204, insulator; 300, positive pole of liquid cooling gun copper busbar; 301, first connecting copper busbar; 302, second connecting copper busbar; 303, positive pole of ordinary gun copper busbar; 304, negative pole of liquid cooling gun copper busbar; 305, negative pole of ordinary gun copper busbar; 306, third connecting copper busbar; 307, transfer copper busbar; 400, notch; 401, bending edge; 402, binding hole. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0019] Example 1 This embodiment provides a liquid-cooled supercharger charging control system. Figure 1 and Figure 2 As shown, it includes an AC module 11, a control module 12, a power module 13 and a DC output module 14.

[0020] The AC module 11 is connected to the control module 12 and the power module 13 and is used to receive AC power to supply power to the control module 12 and the power module 13 .

[0021] The DC output module 14 includes a positive copper bar group, a negative copper bar group, a positive DC contactor group, a negative DC contactor group and a ring copper bar group; the positive copper bar group and the negative copper bar group are respectively connected to the positive DC contactor group and the negative DC contactor group through the ring copper bar group.

[0022] The power module 13 is used to convert AC power into DC power. The DC output positive pole of the power module 13 is connected to the positive copper bar, and is connected to the positive pole of the terminal external unit through the positive copper bar; the DC output negative pole of the power module 13 is connected to the negative copper bar, and is connected to the negative pole of the terminal external unit through the negative copper bar. In this embodiment, the power module 13 can be configured in quantity according to demand. When the power module is not fully equipped, a blind plate 15 is installed to reduce the loss of cold air volume and improve the heat dissipation effect of the power module.

[0023] The input end of the control module 12 receives a charging power switching signal, and the output end is connected to the positive DC contactor group and the negative DC contactor group, and is used to control the on and off of the positive DC contactor group and the negative DC contactor group according to the charging power switching signal to switch the charging power.

[0024] It also includes a super-full integrated cabinet 10 , in which the AC module 11 , the control module 12 , the power module 13 and the DC output module 14 are all arranged.

[0025] Charging control principle: The control module 12 controls the on and off of the positive DC contactor group and the negative DC contactor group according to the received charging power switching signal. When the positive DC contactor group and the negative DC contactor group are all disconnected, each DC power of the positive copper bus bar group and the negative copper bus bar group in the DC output module 14 is output to the conventional charging gun respectively; when the positive DC contactor group and the negative DC contactor group are all connected, the positive copper bus bar group and the negative copper bus bar group in the DC output module 14 are summarized into one DC power output to the liquid-cooled charging gun.

[0026] Example 2 Based on the first embodiment, this embodiment describes in detail the structure of the DC output module 14 and the coordination relationship between the modules in the charging control system.

[0027] like Figure 3-Figure 5As shown, the DC output module 14 also includes a mounting frame, which includes a bottom mounting plate 100, an upper mounting plate 101, a side mounting plate 102 and a terminal guide rail 103. The upper mounting plate 101 is arranged above the mounting surface of the bottom mounting plate 100, and the side mounting plates 102 are fixed to both sides of the upper mounting plate 101; the terminal guide rail 103 is fixed to the middle of the mounting surface of the bottom mounting plate 100 by screws. A positive DC contactor group and a negative DC contactor group are fixed to the bottom mounting plate 100 and the upper mounting plate 101, respectively; the positive DC contactor group and the negative DC contactor group each include 5 DC contactors 200, and the DC contactors 200 on the bottom mounting plate 100 and the upper mounting plate 101 are arranged correspondingly.

[0028] Furthermore, the terminal rail 103 is located between the positive DC contactor group and the negative DC contactor group, and five terminal groups are fixed on the terminal rail 103 through terminal limit cards 202, and the output ends of each terminal group are respectively connected to the mounting plate 100 and the DC contactor 200 on the upper mounting plate 101; the control module 12 is connected to the DC contactor 200 through the terminal group.

[0029] Furthermore, the terminal group includes four 1-input and 2-output terminal blocks 201. Using the electrical principle of synchronous action of the positive DC contactor and the negative DC contactor, the two power lines on the positive and negative DC contactors are connected to the same 1-input and 2-output terminal block 201. With power input from one line, the control module 12 simultaneously controls the on and off of the positive and negative DC contactors 200, thereby ensuring the synchronization of the action of the positive and negative DC contactors.

[0030] Furthermore, an insulating bracket 203 is fixed on both the positive electrode copper bar group and the negative electrode copper bar group.

[0031] In this embodiment, slots 400 are respectively provided in the bottom mounting plate 100 and the upper mounting plate 101 to avoid the copper busbar. In order to increase the strength, a bending edge 401 is added to the edge of the slot 400, and in order to facilitate the binding of the signal line, a binding hole 402 is added on the bending edge 401, which saves the internal space of the cabinet and makes the wiring neat.

[0032] like Figure 3 As shown, the annular copper bar group includes a first connecting copper bar 301, a second connecting copper bar 302, a transfer copper bar 307 and a third connecting copper bar 306; the first connecting copper bar 301 and the second connecting copper bar 302 are fixed on the DC contactor 200, and the second connecting copper bar 302 is located between the first connecting copper bars 301; the transfer copper bar 307 is fixed to the bottom of the first connecting copper bar 301, and the two ends of the third connecting copper bar 306 are respectively fixed to the bottom of the transfer copper bar 307. In this embodiment, each annular copper bar group includes 2 first connecting copper bars 301 and 4 second connecting copper bars 302.

[0033] In this embodiment, the positive copper bar group includes a liquid-cooled gun copper bar positive electrode 300 and a common gun copper bar positive electrode 303; the negative copper bar group includes a liquid-cooled gun copper bar negative electrode 304 and a common gun copper bar negative electrode 305; the liquid-cooled gun copper bar positive electrode 300 and the liquid-cooled gun copper bar negative electrode 304 are respectively fixed on the first connecting copper bar 301 on the same side, and the common gun copper bar positive electrode 303 and the common gun copper bar negative electrode 305 are respectively fixed on the second connecting copper bar 302; the bottoms of the liquid-cooled gun copper bar positive electrode 300, the liquid-cooled gun copper bar negative electrode 304, the common gun copper bar positive electrode 303 and the common gun copper bar negative electrode 305 are all fixed by insulators 204, and the insulators 204 are fixed on the insulator fixing member 104.

[0034] Furthermore, the liquid cooling gun copper bar positive electrode 300 and the liquid cooling gun copper bar negative electrode 304 are respectively connected to the positive electrode and negative electrode of the liquid cooling terminal external machine; the common gun copper bar positive electrode 303 and the common gun copper bar negative electrode 305 are respectively connected to the positive electrode and negative electrode of the conventional terminal external machine. In this embodiment, the current of the liquid cooling terminal external machine is 600A, and the current of the conventional terminal external machine is 250A.

[0035] like Figure 6-Figure 8 As shown, 380V three-phase five-wire AC is introduced to the input end of the molded case circuit breaker 1QF through the AC module 11, and one phase of electricity is taken from the input end to lead out 220V through the miniature circuit breaker QF2, relay KM5 and miniature circuit breaker F1 to the cooling fan FJ, and then divided to the switching power supply UP1 and CZ. The switching power supply UP1 converts the 220V AC power into 12V DC power to supply power to the control module 12, and the 380V AC power is supplied to the power module 13 after passing through the AC contactor 1KM. The power module 13 ( Figure 6-Figure 8 The DC output positive pole of the power module AU1-AU9 that converts AC power into DC power is connected to the liquid cooling gun copper busbar positive pole 300 and the ordinary gun copper busbar positive pole 303. The power module AU1-AU9 that converts AC power into DC power is connected to the liquid cooling gun copper busbar negative pole 304 and the ordinary gun copper busbar negative pole 305. The liquid cooling gun copper busbar positive pole 300 and the liquid cooling gun copper busbar negative pole 304 are connected to the liquid cooling terminal external unit, and the ordinary gun copper busbar positive pole 303 and the ordinary gun copper busbar negative pole 305 are connected to the conventional 250A terminal external unit. The electric vehicle is connected through the charging gun of the terminal external unit to form a loop to charge the electric vehicle. The control module 12 controls the DC contactor ( Figure 6-Figure 8 The power is switched by switching ZK1-ZK10. When ZK1-ZK10 are all disconnected, the DC output module 14 outputs 5 250A DC power to the common charging gun; when ZK1-ZK10 are all connected, the DC output module 14 outputs 1 ( Figure 6-Figure 8 The control module 12 communicates with the external terminal through CAN signals until charging is completed.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A liquid-cooled supercharge control system, characterized in that: It comprises an AC module (11), a control module (12), a power module (13) and a DC output module (14); The AC module (11) is connected to the control module (12) and the power module (13) and is used to receive AC power to supply power to the control module (12) and the power module (13); The DC output module (14) comprises a positive copper bar group, a negative copper bar group, a positive DC contactor group, a negative DC contactor group and a ring copper bar group; the positive copper bar group and the negative copper bar group are respectively connected to the positive DC contactor group and the negative DC contactor group via the ring copper bar group; The power module (13) is used to convert alternating current into direct current, the DC output positive pole of the power module (13) is connected to the positive copper busbar, and is connected to the positive pole of the terminal external unit via the positive copper busbar; the DC output negative pole of the power module (13) is connected to the negative copper busbar, and is connected to the negative pole of the terminal external unit via the negative copper busbar; The control module (12) has an input end receiving a charging power switching signal, and an output end connected to a positive DC contactor group and a negative DC contactor group, and is used to control the on and off of the positive DC contactor group and the negative DC contactor group according to the charging power switching signal, so as to switch the charging power.

2. The liquid-cooled supercharge control system according to claim 1, characterized in that: The DC output module (14) further comprises a mounting frame, which comprises a bottom mounting plate (100), an upper mounting plate (101), a side mounting plate (102) and a terminal guide rail (103); The upper mounting plate (101) is arranged above the mounting surface of the bottom mounting plate (100), and the side mounting plates (102) are fixed to both sides of the upper mounting plate (101); The terminal guide rail (103) is fixed to the middle part of the mounting surface of the bottom mounting plate (100).

3. The liquid-cooled supercharge control system according to claim 2, characterized in that: A positive DC contactor group and a negative DC contactor group are respectively fixed on the bottom mounting plate (100) and the upper mounting plate (101); The positive DC contactor group and the negative DC contactor group each include five DC contactors (200), and the DC contactors (200) on the bottom mounting plate (100) and the upper mounting plate (101) are arranged correspondingly.

4. The liquid-cooled supercharge control system according to claim 3, characterized in that: The terminal rail (103) is located between the positive DC contactor group and the negative DC contactor group, and five wiring terminal groups are fixed on the terminal rail (103) via terminal limit clamps (202), and the output end of each wiring terminal group is respectively connected to the DC contactor (200) on the mounting plate (100) and the upper mounting plate (101); The control module (12) is connected to the DC contactor (200) via a terminal block group.

5. The liquid-cooled supercharge control system according to claim 4, characterized in that: The connection terminal group comprises four connection terminals (201) with one input and two outputs.

6. The liquid-cooled supercharge control system according to claim 1, characterized in that: An insulating bracket (203) is fixed on both the positive electrode copper bar group and the negative electrode copper bar group.

7. The liquid-cooled supercharge control system according to claim 3, characterized in that: The annular copper bar group comprises a first connecting copper bar (301), a second connecting copper bar (302), a transfer copper bar (307) and a third connecting copper bar (306); The first connecting copper bar (301) and the second connecting copper bar (302) are fixed on the DC contactor (200), and the second connecting copper bar (302) is located between the first connecting copper bars (301); The transfer copper bar (307) is fixed to the bottom of the first connection copper bar (301), and two ends of the third connection copper bar (306) are respectively fixed to the bottom of the transfer copper bar (307).

8. The liquid-cooled supercharge control system according to claim 7, characterized in that: The positive copper bar group comprises a liquid-cooled gun copper bar positive electrode (300) and a common gun copper bar positive electrode (303); the negative copper bar group comprises a liquid-cooled gun copper bar negative electrode (304) and a common gun copper bar negative electrode (305); The liquid cooling gun copper bar positive electrode (300) and the liquid cooling gun copper bar negative electrode (304) are respectively fixed on the first connecting copper bar (301) on the same side, and the ordinary gun copper bar positive electrode (303) and the ordinary gun copper bar negative electrode (305) are respectively fixed on the second connecting copper bar (302); The bottoms of the liquid-cooling gun copper bar positive electrode (300), the liquid-cooling gun copper bar negative electrode (304), the common gun copper bar positive electrode (303) and the common gun copper bar negative electrode (305) are all fixed by an insulator (204).

9. The liquid-cooled supercharge control system according to claim 8, characterized in that: The liquid cooling gun copper bar positive electrode (300) and the liquid cooling gun copper bar negative electrode (304) are respectively connected to the positive electrode and negative electrode of the liquid cooling terminal external unit; the common gun copper bar positive electrode (303) and the common gun copper bar negative electrode (305) are respectively connected to the positive electrode and negative electrode of the conventional terminal external unit.

10. The liquid-cooled supercharge control system according to claim 1, characterized in that: It also comprises a super-full integrated cabinet (10), wherein the AC module (11), the control module (12), the power module (13) and the DC output module (14) are all arranged inside the super-full integrated cabinet (10).

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