CN213846248U - Capacitor energy storage device - Google Patents

Abstract

The utility model relates to the technical field of capacitors, and provides a capacitor energy storage device, which comprises a plurality of switch components, a plurality of capacitor components and an energy storage cabinet, wherein each switch component comprises an incoming line end and a leading-out terminal; each capacitor assembly is electrically connected with a power grid through each switch assembly to form a main loop, and each switch assembly is suitable for controlling each capacitor assembly to be put into or cut off the main loop; the utility model discloses a capacitor assembly that each switch module can control to correspond drops into or amputates the major loop, and when a capacitor assembly broke down at steady voltage in-process, other capacitor assemblies can be pressed with the stabilizing net through the closure of the switch module selectivity that corresponds with it with dropping into the major loop to play the standby effect, improve the steady voltage reliability of energy memory to system's voltage.

Description

Capacitor energy storage device

Technical Field

The utility model relates to a condenser technical field particularly, relates to a capacitor energy memory.

Background

At present, the development of the rail transit field is rapid, and urban rail transit is a good medicine for relieving traffic pressure of medium and large cities and reducing urban tail gas pollution due to the characteristics of small occupied area, large passenger capacity, high speed, safety and the like. The urban rail transit vehicle is driven by electric power, is energy-saving and environment-friendly, but is a large power consumer in energy consumption. The subway has short running interval and frequent starting and braking, can generate a large amount of regenerative braking energy during braking, converts the kinetic energy of the vehicle into electric energy and feeds the electric energy back to a traction network through a traction inverter and a pantograph. Due to the unidirectional energy flow characteristic between the traction network transformer substation and the direct-current traction network, the train braking energy cannot return to the alternating-current power network, and when the train brakes, the large fluctuation of the traction network voltage can be caused.

For inhibiting the large fluctuation of the traction network voltage caused by the deceleration and braking of the train, the traditional solution is to monitor that the traction network voltage is greater than a set value, and convert electric energy into heat energy by accessing resistance consumption, thereby inhibiting the network voltage from continuously rising. This not only brings the additional cost of subway stations and tunnel ventilation equipment, but also results in considerable regenerative braking energy waste. The existing solution is to install a super capacitor module in a capacitor cabinet for energy storage, when the traction network voltage rises due to deceleration and braking of a train, the redundant electric energy is stored in the super capacitor, and the network voltage rise is inhibited; when the voltage of a traction network is reduced due to the starting or acceleration of the train, the energy stored in the super capacitor is released, and the network voltage reduction is restrained. But set up a set of electric capacity module usually in current electric capacity cabinet, when a set of electric capacity module broke down, thereby can't play the effect of steady net voltage, and then lead to the steady voltage reliability of equipment to reduce.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem how to design a capacitor energy storage device that steady voltage reliability is high.

In order to solve the above problem, the utility model provides a capacitor energy storage device, include:

a plurality of switch assemblies, the switch assemblies including an incoming line end and an outgoing line end, the incoming line end of each switch assembly adapted to be connected to a power grid;

the capacitor assemblies are respectively connected with the wire outlet ends of the switch assemblies;

the capacitor assemblies are arranged in the energy storage cabinet;

each capacitor assembly is electrically connected with the power grid through each switch assembly to form a main loop, and each switch assembly is suitable for controlling each capacitor assembly to switch on or switch off the main loop.

Optionally, the system further comprises a main switch, the main switch is arranged between the power grid and the switch assemblies, one end of the main switch is connected with the power grid, and the incoming line ends of the switch assemblies are connected in parallel and then connected with the other end of the main switch.

Optionally, the switch module includes a circuit breaker and a contactor, one end of the circuit breaker with the master switch deviates from the one end of the power grid is electrically connected, the other end of the circuit breaker with one end of the contactor is electrically connected, the other end of the contactor with the capacitor module is electrically connected.

Optionally, the switch assembly further includes a control management device, the capacitor assembly includes a plurality of capacitor boxes, a plurality of capacitor modules, and a plurality of balance control devices, each capacitor box is adapted to be installed with the capacitor module and the balance control device, one end of the balance control device is electrically connected to the capacitor module, and the other end of the balance control device is electrically connected to the control management device.

Optionally, the capacitor module comprises a positive electrode connecting part, a negative electrode connecting part, a plurality of capacitor units and a plurality of connecting pieces, the capacitor units are sequentially connected in series through the connecting pieces, and the two capacitor units at the head end and the tail end are respectively and electrically connected with the positive electrode connecting part and the negative electrode connecting part;

the capacitor assembly further comprises a plurality of connecting wires, the capacitor modules are sequentially connected in series and are adjacent to each other, the positive connecting portions of the capacitor modules are connected with the negative connecting portions through the connecting wires, and the capacitor modules are located at the head end and the tail end and deviate from the contactor, and one end of the circuit breaker is electrically connected.

Optionally, the positive electrode connecting portion and the negative electrode connecting portion are disposed on a side wall of the capacitor box in a penetrating manner.

Optionally, the equalization control device includes a control board, a voltage equalization harness, a temperature acquisition harness and a plurality of temperature sensors, which are disposed in the capacitor box, each capacitor unit is electrically connected to one end of the voltage equalization harness, the other end of the voltage equalization harness is electrically connected to the control board, the voltage equalization harness is used for acquiring voltage data of each capacitor unit, each temperature sensor is disposed on each connecting piece, each temperature sensor is electrically connected to one end of the temperature acquisition harness, the other end of the temperature acquisition harness is electrically connected to the control board, and the temperature sensor is used for acquiring temperature data of each capacitor unit; the control board is electrically connected with the control management device to upload the voltage data and the temperature data.

Optionally, a maintenance window is arranged on one side wall of the capacitor box body, and the control panel is arranged close to the maintenance window in the capacitor box body.

Optionally, a voltage acquisition interface and a temperature acquisition interface are arranged on the control panel, the voltage equalization wiring harness faces towards one end of the control panel and is electrically connected with the voltage acquisition interface, and the temperature acquisition wiring harness faces towards one end of the control panel and is electrically connected with the temperature acquisition interface.

Optionally, a plurality of first accommodating bins and a plurality of second accommodating bins are arranged inside the energy storage cabinet, each capacitor box is respectively arranged in each first accommodating bin, and each control management device is respectively arranged in each second accommodating bin.

Optionally, the system further comprises a touch screen and a control host, each control management device is electrically connected with the control host, and the control host is electrically connected with the touch screen; the touch screen is arranged on the energy storage cabinet.

Optionally, still including being used for instructing the tablet marks of capacitor module's serial number, mark the tablet set up in on an lateral wall of electric capacity box.

The utility model has the advantages that: a plurality of capacitor assemblies are arranged in the energy storage cabinet, so that not only is stable installation of each capacitor assembly ensured, but also personnel are prevented from being touched by mistake; the inlet ends of the switch components are connected to the power grid, the outlet ends of the switch components are respectively electrically connected with the capacitor components, the power grid, the switch components and the capacitor components are sequentially connected to form a main loop, the switch components can control the corresponding capacitor components to be switched into or switched off the main loop, when one capacitor component is in the working state of switching into the main loop, other capacitor assemblies are in a standby state of cutting off the main loop, one capacitor assembly is used for standby, and when one capacitor assembly fails in the voltage stabilizing process, the other capacitor elements may be selectively closed by their corresponding switch elements to switch into the main circuit, and then replace former capacitor assembly to continue to stabilize the net voltage to play the standby role, reduced energy memory's trouble risk, improved energy memory to the steady voltage reliability of system voltage.

Drawings

Fig. 1 is a schematic block diagram of a capacitor energy storage device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an embodiment of a capacitor energy storage device according to the present invention;

fig. 3 is a second schematic structural diagram of the capacitor energy storage device according to the embodiment of the present invention;

fig. 4 is a schematic structural diagram of an energy storage cabinet according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a capacitor module according to an embodiment of the present invention;

fig. 6 is a schematic view of a partial structure of a capacitor module according to an embodiment of the present invention;

fig. 7 is a second schematic diagram illustrating a partial structure of a capacitor module according to an embodiment of the present invention;

fig. 8 is a third schematic view illustrating a partial structure of a capacitor module according to an embodiment of the present invention;

FIG. 9 is a fourth schematic diagram illustrating a partial structure of a capacitor module according to an embodiment of the present invention;

fig. 10 is a schematic structural view of a positioning frame according to an embodiment of the present invention.

Description of reference numerals:

1-a touch screen; 2-control the host computer; 3-a switching assembly; 31-a circuit breaker; 32-a contactor; 33-control management means; 4-a master switch; 5-a capacitor box body; 51-maintenance window; 52-a communication interface; 6-a capacitor module; 61-positive electrode connection; 62-negative electrode connection; 63-capacitor monomer; 64-a connector; 65-a positioning frame; 651-rectangular shelf; 652-first connecting rod; 653 — a second connecting rod; 66-reinforcing ribs; 7-a balance control device; 71-a control panel; 711-voltage acquisition interface; 712-temperature acquisition interface; 72-voltage equalization harness; 8-maintenance of the closure; 9-an energy storage cabinet; 91-a first holding bin; 92-a second holding bin; 10-a nameplate; 11-a handle.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the coordinate system XYZ provided herein, the X axis represents the right direction in the forward direction, the X axis represents the left direction in the reverse direction, the Y axis represents the front direction, the Y axis represents the rear direction in the reverse direction, the Z axis represents the upper direction in the forward direction, and the Z axis represents the lower direction in the reverse direction. Also, it is noted that the terms "first," "second," and the like in the description and claims of the present invention and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the terms "an example," "one example," and "one implementation," etc., mean that a particular feature, structure, material, or characteristic described in connection with the example or implementation is included in at least one example or implementation of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or implementation. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

In order to solve the above technical problem, as shown in fig. 1, an embodiment of the present invention provides a capacitor energy storage device, including:

a plurality of switch assemblies 3, said switch assemblies 3 comprising an incoming line end and an outgoing line end, said incoming line end of each said switch assembly 3 being adapted to be connected to an electrical grid;

a plurality of capacitor elements, each of which is connected to the output terminal of each of the switch elements 3;

the energy storage cabinet 9 is provided with a plurality of capacitor assemblies, and each capacitor assembly is arranged in the energy storage cabinet 9;

each capacitor assembly is electrically connected with the power grid through each switch assembly 3 to form a main loop, and each switch assembly 3 is suitable for controlling each capacitor assembly to switch on or switch off the main loop.

It should be noted that the capacitor assembly is used for stabilizing the system voltage and suppressing voltage fluctuation caused by starting or braking of a large load such as a train, the switch assembly 3 is arranged between the power grid and the capacitor assembly and used for controlling the capacitor assembly to be switched on or switched off, and the plurality of capacitor assemblies are all arranged in the energy storage cabinet 9, so that electric shock accidents caused by manual touch on the capacitor assemblies can be effectively prevented; a plurality of capacitor assemblies are arranged in the energy storage cabinet 9, so that not only is stable installation of each capacitor assembly ensured, but also personnel are prevented from being touched by mistake; the inlet ends of the switch components 3 are connected to the power grid, the outlet ends of the switch components 3 are respectively electrically connected with the capacitor components, the power grid, the switch components 3 and the capacitor components are sequentially connected to form a main loop, the switch components 3 can control the corresponding capacitor components to be switched on or switched off the main loop, wherein, when one capacitor component is in the working state of being thrown into the main loop, the other capacitor components are in the standby state of cutting off the main loop, and when one capacitor component has a fault in the process of stabilizing the voltage of the network voltage, the other capacitor elements can be selectively closed by the corresponding switch element 3 to switch into the main circuit, and then replace former capacitor assembly to continue to stabilize the net voltage to play mutual reserve function, reduced energy memory's trouble risk, improved energy memory to the steady voltage reliability of system voltage.

In an embodiment of the present invention, the capacitor energy storage device further includes a main switch 4, the main switch 4 is disposed between the power grid and the switch assembly 3, one end of the main switch 4 is connected to the power grid, and the incoming line end of each switch assembly 3 is connected in parallel to the other end of the main switch 4.

It should be noted that, as shown in fig. 1, the main switch 4 is disposed between the power grid and the plurality of switch assemblies 3, and is used to control all the switch assemblies 3 to be cut off or put into the main loop, that is, when a certain switch assembly 3 has a fault, the main switch 4 may be turned off to maintain the faulty switch assembly 3, so that the faulty switch assembly 3 is prevented from reaching the power grid, and the fault range is reduced.

In another embodiment of the utility model, a charger is arranged between the energy storage device and the power grid, and one end of the charger, which is far away from the power grid, is connected with a plurality of energy storage devices; the charger comprises an upper computer, a charging cabinet, a DC/DC converter and a plurality of main switches 4, wherein the DC/DC converter is arranged in the charging cabinet and is electrically connected with the upper computer, so that the normal work of the DC/DC converter can be monitored by the upper computer; the DC/DC converter is used for processing and storing excessive electric energy of the power grid in a capacitor assembly in the energy storage device, or processing and feeding back the electric energy in the capacitor assembly to the power grid, so that the auxiliary effect of the capacitor assembly on inhibiting the voltage fluctuation of the power grid is achieved; one end of the DC/DC converter is connected with a power grid, one end of each of the main switches 4 is electrically connected with the other end of the DC/DC converter, and the other ends of the main switches 4 are respectively connected with each energy storage device, namely, one main switch 4 can control the power-on or power-off of one energy storage device; the main switch 4 may be a load switch or an isolating switch with a fuse, the main switch 4 may also be a universal circuit breaker or a molded case circuit breaker, and the main switch 4 is suitable for both the technical solution and the energy storage device that is suitable for being connected between the power grid and the energy storage device and can break a large current, and is not limited herein.

In an embodiment of the present invention, as shown in fig. 1, the switch assembly 3 includes a circuit breaker 31 and a contactor 32, one end of the circuit breaker 31 and the main switch 4 are deviated from the one end of the power grid is electrically connected, the other end of the circuit breaker 31 and one end of the contactor 32 are electrically connected, and the other end of the contactor 32 and the capacitor assembly are electrically connected.

It should be noted that the circuit breaker 31 may be an air switch, a molded case circuit breaker, or the like, and the circuit breaker 31 is disposed between the main switch 4 and the contactor 32 and is used for closing or opening a main circuit between the main switch 4 and the capacitor assembly; the breaker 31 and the contactor 32 may be disposed in the energy storage cabinet 9, and may also be disposed in other switch cabinets, and the specific installation position is not specifically limited herein; the contactor 32 may be a dc contactor, and may also be an ac contactor, and both ends of the contactor 32 are connected with the circuit breaker 31 and the capacitor assembly respectively, and are used to control the capacitor assembly to be switched on and off for a long time, and as long as the circuit breaker 31 and the contactor 32 capable of realizing the capacitor assembly to be switched into or cut off the main circuit are both applicable to the technical scheme, and are not specifically limited herein.

In an embodiment of the present invention, as shown in fig. 1, the switch assembly 3 further includes a control management device 33, the capacitor assembly includes a plurality of capacitor boxes 5, a plurality of capacitor modules 6 and a plurality of balance control devices 7, each of which is suitable for installation inside the capacitor box 5 the capacitor modules 6 and the balance control devices 7, one end of the balance control devices 7 is electrically connected to the capacitor modules 6, and each of the other ends of the balance control devices 7 is electrically connected to the control management device 33.

It should be noted that, as shown in fig. 1, the number of the switch assemblies 3 is matched with that of the capacitor assemblies, the number of the switch assemblies 3 and the number of the capacitor assemblies may be two or more, and when one switch assembly 3 and the capacitor assembly corresponding to the switch assembly are in a working state of being put into a main loop, the other switch assembly 3 and the capacitor assembly corresponding to the switch assembly are in a standby state of cutting off the main loop, so that one of the two capacitor assemblies is used, and the reliability of the voltage stabilization of the power grid is improved; the specific number of the switch assemblies 3 and the capacitor assemblies depends on the actual situation of the field, and is not limited herein; the number of the capacitor modules 6 and the number of the balance control devices 7 can be six or more, namely six capacitor modules 6 are connected in series to form a capacitor assembly; each switch component 3 comprises a control management device 33, each balance control device 7 corresponds to one capacitor module 6 and is used for acquiring the running state data of each capacitor module 6, and each control management device 33 is used for monitoring the running state data of each capacitor module 6 in each capacitor component through a plurality of balance control devices 7 and uploading the running state data of each capacitor module 6 to the control host 2; capacitor module 6 and balanced controlling means 7 all set up in electric capacity box 5, and the one end of a plurality of balanced controlling means 7 is passed through CAN communication pencil and is connected with each capacitor module 6 electricity for gather the running state data that corresponds capacitor module 6, and the one end that a plurality of balanced controlling means 7 deviate from capacitor module 6 is connected with control management device 33, is convenient for gather and transmit the running state data of a plurality of capacitor module 6 to control management device 33.

In an embodiment of the present invention, as shown in fig. 1, fig. 6, fig. 7 and fig. 8, the capacitor module 6 includes a positive electrode connecting portion 61, a negative electrode connecting portion 62, a plurality of capacitor units 63 and a plurality of connecting members 64, the plurality of capacitor units 63 are sequentially connected in series through each connecting member 64, and two capacitor units 63 located at the head and tail ends are electrically connected to the positive electrode connecting portion 61 and the negative electrode connecting portion 62 respectively;

the capacitor assembly further comprises a plurality of connecting wires, and the plurality of capacitor modules 6 are sequentially connected in series; two adjacent on the capacitor module 6 positive pole connecting portion 61 with pass through between the negative pole connecting portion 62 the connecting wire is connected, is located two of head and tail end the capacitor module 6 with contactor 32 deviates from the one end electricity of circuit breaker 31 is connected.

It should be noted that the positive electrode connecting portion 61 and the negative electrode connecting portion are disposed on the capacitor box 5 at intervals, the plurality of capacitor units 63 are connected in series in sequence through the connecting members 64 to form a capacitor module 6, and the connecting members 64 may be connecting copper sheets or connecting wires; adjacent two capacitor units 63 in all the capacitor units 63 are connected in series through a connecting piece 64, two ends of the connecting piece 64 are respectively and electrically connected with the positive terminal and the negative terminal of the two capacitor units 63, the positive terminal/the negative terminal of the capacitor unit 63 at the head end is electrically connected with the positive connecting part 61/the negative connecting part 62 through a conducting wire or a conducting strip, the negative terminal/the positive terminal of the capacitor unit 63 at the tail end is electrically connected with the negative connecting part 62/the positive connecting part 61 through a conducting wire or a conducting strip, and therefore the capacitor units 63 in each capacitor module 6 are connected in series to form the capacitor module 6; each capacitor assembly comprises a plurality of capacitor modules 6, the plurality of capacitor modules 6 are connected in series through connecting lines, and the positive connecting part and the negative connecting part 62 on two connected capacitor modules 6 are electrically connected through connecting lines, the positive connecting part/negative connecting part 62 of the capacitor module 6 at the head end and the negative connecting part 62/positive connecting part of the capacitor module 6 at the tail end in each capacitor assembly are respectively and electrically connected with one end of the contactor 32 departing from the breaker 31, so that the contactor 32 in each switch assembly 3 controls the power-on and power-off of the plurality of capacitor modules 6 connected in series in the corresponding capacitor assembly, when the breaker 31 and the contactor 32 are closed, the plurality of capacitor modules 6 connected in series in the corresponding capacitor assembly are put into a main loop to realize the suppression of the voltage fluctuation of a power grid, when the capacitor assembly group has faults, the circuit breaker 31 and the contactor 32 in the switch assembly group 3 are firstly opened, and the circuit breaker 31 and the contactor 32 in the other switch assembly group 3 are closed, so that the other capacitor assembly group is put into a main loop, and the voltage of a power grid is further stabilized.

In an embodiment of the present invention, as shown in fig. 6, 7 and 8, the positive electrode connecting portion 61 and the negative electrode connecting portion 62 are disposed through a side wall of the capacitor box 5.

It should be noted that, the positive electrode connecting portion 61 and the negative electrode connecting portion 62 are disposed on one side wall of the capacitor box 5 at an interval, for example, the positive electrode connecting portion 61 and the negative electrode connecting portion 62 are disposed on the front side wall or the rear side wall of the capacitor box 5 at an interval, so that after the front side wall or the rear side wall of the capacitor box 5 is opened, the positive electrode connecting portion 61 and the negative electrode connecting portion 62 of two adjacent capacitor modules 6 can be connected by a connecting wire, which not only facilitates the assembly and disassembly of the capacitor modules and the maintenance, but also prevents the wrong connection of the positive electrode and the negative electrode of the capacitor module 6 caused by the misplacement of the capacitor module 6; wherein, connecting portion can be binding post, also can be the socket, when connecting portion are the interface, when will linking to each other two capacitor module 6 and establish ties, all connect the plug at the both ends of connecting wire, peg graft through a plug with the positive pole socket on one of them capacitor module 6 with the one end of connecting wire, peg graft through another plug and another capacitor module 6 on the negative pole socket of connecting wire to realize two adjacent capacitor module 6 and pass through the quick electricity of connecting wire and connect.

In an embodiment of the present invention, as shown in fig. 7, the present invention further includes two handles 11, the handles 11 are disposed on the front side wall of the capacitor box 5, and the handles 11 are disposed on two sides of the maintenance cover 8, so that the worker can act on the capacitor box 5 through the handles 11 to realize the dismounting.

The utility model discloses an embodiment, combine fig. 8, fig. 9 and fig. 10 to show, condenser module 6 is still including setting up two locating racks 65 in electric capacity box 5, and two locating racks 65 are installed relatively in electric capacity monomer 63's both ends, are equipped with a plurality of nets on the locating rack 65, and each electric capacity monomer 63's both ends imbed respectively in corresponding each net of inclining the locating rack 65, realize the location to each electric capacity monomer 63.

In this embodiment, two positioning frames 65 are disposed inside each capacitor box 5, and when two ends of each capacitor unit 63 are respectively embedded into grids of the positioning frames 65 on the corresponding sides, the grids of the two positioning frames 65 play a role in positioning the top end and the bottom end of each capacitor unit 63; the positioning frame 65 comprises a rectangular frame 651, a plurality of first connecting rods 652 and a plurality of second connecting rods 653, the plurality of first connecting pieces 64 are arranged in the rectangular frame 651 in a spaced parallel manner, the plurality of second connecting rods 653 are arranged in the rectangular frame 651 in a spaced parallel manner and are perpendicularly intersected with the first connecting rods 652, the space enclosed by two adjacent first connecting rods 652 and two adjacent second connecting rods 653 is a grid, the size of each grid is matched with the size of the top end or the bottom end of the capacitor unit 63, and the capacitor unit 63 is conveniently positioned.

In an embodiment of the present invention, the capacitor module 6 further includes two sets of reinforcing ribs 66 disposed in the capacitor box 5, the two sets of reinforcing ribs 66 are disposed at two sides of the capacitor unit 63, and each set of reinforcing ribs 66 is located between the positioning frame 65 and the inner top wall or the inner bottom wall of the capacitor box 5, and cooperates with the positioning frame 65 to play an auxiliary supporting role for the plurality of capacitor units 63, so as to prevent the capacitor unit 63 from deforming the capacitor box 5 due to gravity; the number of each group of reinforcing ribs 66 is plural, and the plurality of reinforcing ribs 66 are arranged at intervals along the width direction of the capacitor box 5, and the reinforcing ribs 66 can be strip-shaped structures made of insulating materials, and can also be in other shapes without limitation.

In an embodiment of the present invention, as shown in fig. 7 and 8, the equalization control device 7 includes a control board 71, a voltage equalization harness 72, a temperature acquisition harness (not shown), and a plurality of temperature sensors (not shown) disposed in the capacitor box 5, each capacitor unit 63 is electrically connected to one end of the voltage equalization harness 72, the other end of the voltage equalization wire harness 72 is electrically connected with the control board 71, the voltage equalization wire harness 72 is used for collecting voltage data of each capacitor unit 63, each temperature sensor is respectively arranged on each connecting piece 64, each temperature sensor is respectively electrically connected with one end of the temperature collection wire harness, the other end of the temperature acquisition wire harness is electrically connected with the control board 71, and the temperature sensor is used for acquiring temperature data of each capacitor unit 63; the control board 71 is electrically connected to the control management device 33 to upload the voltage data and the temperature data.

It should be noted that each of the equalization control devices 7 is provided with a control board 71, and the control board 71 is installed inside the capacitor box 5, that is, the control board 71 may be installed inside the capacitor box 5 through a bracket, and may also be installed on an inner side wall of the capacitor box 5; the voltage equalization wiring harness 72 is used for acquiring working voltage data of each capacitor unit 63 in each capacitor module 6, the voltage equalization wiring harness 72 is formed by collecting a plurality of voltage acquisition cables, and one end of each voltage acquisition cable, which is far away from the control board 71, is electrically connected with a connecting piece 64, namely, the voltage acquisition cables can be connected through bolts, welding or other contact electrical connection modes; because the positive terminal and the negative terminal of two adjacent capacitor units 63 are electrically connected through the connecting piece 64, the end of each voltage acquisition cable in the voltage equalization wiring harness 72 is respectively connected with each connecting piece 64, so that the working voltage data of each capacitor unit 63 can be acquired through the voltage equalization wiring harness 72; the temperature acquisition pencil is used for cooperating with each temperature sensor who sets up on each connecting piece 64, thereby can gather each electric capacity monomer 63's operating temperature data, the temperature acquisition pencil is formed for a plurality of temperature acquisition cables are assembled, the tip of a plurality of temperature acquisition cables in the temperature acquisition pencil is connected with each temperature sensor electricity respectively, the temperature acquisition pencil deviates from temperature sensor's one end and is connected with control panel 71 electricity, thereby realize gathering to control panel 71 the operating temperature data of each electric capacity monomer 63, and then through voltage balance pencil 72, temperature acquisition pencil and temperature sensor realize gathering in real time and detecting and carrying to corresponding control panel 71 to each electric capacity monomer 63's operating voltage data and operating temperature data in every condenser module 6.

In an embodiment of the present invention, as shown in fig. 6, a maintenance window 51 is disposed on a side wall of the capacitor box 5, and the control board 71 is disposed inside the capacitor box 5 and close to the maintenance window 51.

It should be noted that a maintenance window 51 is formed on one side wall of the capacitor box 5, and the control board 71 is installed in the capacitor box 5 at a position close to the maintenance window 51, so that the control board 71 can be operated through the maintenance window 51; the maintenance window 51, the positive electrode connecting part 61 and the negative electrode connecting part 62 are arranged on the front side wall or the rear side wall of the capacitor box body 5, so that when the energy storage cabinet 9 is opened, the control panel 71 in the capacitor module 6 with a fault can be directly maintained; the maintenance window 51 is larger than the control panel 71, so that it is more convenient to assemble and disassemble and insert a maintenance plug during maintenance.

In the present embodiment, as shown in fig. 5 and 6, a maintenance cover 8 is further included, and the maintenance cover 8 is disposed on the maintenance window 51.

It should be noted that the size of the maintenance cover 8 is larger than the maintenance window 51, so that the maintenance window 51 is conveniently and completely shielded, dust entering the inside of the capacitor box 5 is reduced, and the inside of the capacitor box 5 is ensured to be clean; the maintenance sealing cover 8 is detachably mounted on the front side wall of the capacitor box body 5 to shield the maintenance window 51, wherein the maintenance sealing cover 8 can be mounted on the front side wall of the capacitor box body 5 through bolts, and can also be mounted through other mounting structures, for example, one end of the maintenance sealing cover 8 is connected with one end of the maintenance window 51 through a hinge or a hinge piece, and the other end of the maintenance sealing cover 8 is connected with the other end of the maintenance window 51 through a buckle piece in a buckle manner, so that the maintenance sealing cover 8 can be opened or closed in the maintenance window 51 through rotation.

In this embodiment, as shown in fig. 6, the capacitor box 5 is further provided with a communication interface 52, wherein the communication interface 52 is disposed on a side wall of the capacitor box 5; one end of the communication interface 52 inside the capacitor box 5 is electrically connected with the control board 71 in a communication manner, and the other end of the communication interface 52 outside the capacitor box 5 is electrically connected with the control management device 33 in a communication manner through the CAN bus, so as to transmit the corresponding running state data of the capacitor module 6 to the control management device 33.

The utility model discloses an in an embodiment, be equipped with voltage acquisition interface 711 and temperature acquisition interface 712 on the control panel 71, the orientation of voltage balance pencil 72 the one end of control panel 71 with voltage acquisition interface 711 electricity is connected, the temperature acquisition pencil orientation the one end of control panel 71 with temperature acquisition interface 712 electricity is connected.

It should be noted that the control board 71 is provided with a voltage acquisition interface 711 and a temperature acquisition interface 712, wherein the number of the voltage acquisition interface 711 and the temperature acquisition interface 712 is at least one, one end of the voltage equalization wiring harness 72 facing the control board 71 is plugged with the voltage acquisition interface 711, and one end of the temperature acquisition wiring harness facing the control board 71 is plugged with the temperature acquisition interface 712, so that the connection convenience of the voltage equalization wiring harness 72, the temperature acquisition wiring harness and the control board 71 is improved; the voltage acquisition interface 711 can also be a test interface or a charging interface, that is, the capacitor unit 63 in the capacitor module 6 can be tested or charged, that is, when a certain capacitor unit 63 in the capacitor module 6 fails, a test plug is inserted into the voltage acquisition interface 711, so that the capacitor unit 63 is tested or maintained; when the charging of a certain capacitor unit 63 is abnormal, a charging plug is inserted into the voltage acquisition interface 711, so that the corresponding capacitor unit 63 is charged.

In an embodiment of the present invention, as shown in fig. 3 and fig. 4, a plurality of first accommodating compartments 91 and a plurality of second accommodating compartments 92 are disposed inside the energy storage cabinet 9, each capacitor box 5 is disposed in each first accommodating compartment 91, and each control management device 33 is disposed in each second accommodating compartment 92.

It should be noted that a plurality of first accommodating bins 91 and a plurality of second accommodating bins 92 are arranged in the energy storage cabinet 9, and each of the first accommodating bins 91 and the second accommodating bins 92 is provided with a supporting bottom plate for respectively supporting and mounting the capacitor box 5 and the control management device 33; the first accommodating bins 91 are suitable for mounting the capacitor boxes 5, the number of the first accommodating bins 91 is twelve, one capacitor assembly can be mounted in the left six first accommodating bins 91, and one capacitor assembly comprises six capacitor modules 6, namely the left six first accommodating bins 91 are suitable for mounting six capacitor boxes 5, and the right six first accommodating bins 91 can be used for mounting six capacitor boxes 5 in another capacitor assembly; the second housing chamber 92 is adapted to mount the control management device 33 therein, the number of the control management devices 33 matches the number of the second housing chamber 92, and the two second housing chambers 92 are adapted to mount the control management devices 33 therein.

In an embodiment of the present invention, as shown in fig. 2, the present invention further includes a touch screen 1 and a control host 2, each of the control management devices 33 is electrically connected to the control host 2, and the control host 2 is electrically connected to the touch screen 1; the touch screen 1 is arranged on the energy storage cabinet 9.

It should be noted that the touch screen 1 is installed on the front side wall of the energy storage cabinet 9, and one side wall of the energy storage cabinet 9, which is located in the coordinate system in the Y-axis forward direction, is the front side wall of the energy storage cabinet 9, so that a worker can observe the operation state data of each capacitor module 6 in time, the control host 2 may be installed in the energy storage cabinet 9, or may be installed in other electric cabinets outside the energy storage cabinet 9, the specific installation of the control host 2 is not limited herein, and the control host 2 may be a computer host; the control management devices 33 are respectively in communication connection with the control host 2 through the CAN bus, so that the operation state data of the capacitor modules 6 in the corresponding capacitor assembly are transmitted to the control host 2, the control host 2 is in communication connection with the touch screen 1 through the CAN bus, and the operation state data are transmitted to the touch screen 1 and displayed, so that a worker CAN conveniently look up the operation state data at any time; the control host 2 is in communication connection with an upper computer through an RS485 cable, the upper computer is a background monitoring computer, and the control host 2 uploads the running state data to the upper computer so as to facilitate background real-time monitoring.

The utility model discloses an in the embodiment, still include and be used for instructing the tablet 10 that marks of capacitor module 6's serial number, mark the tablet set up in on an lateral wall of electric capacity box 5.

It should be noted that the nameplate 10 is arranged on the front side wall of the capacitor box body 5, and the nameplate 10 displays the serial numbers or addresses of the capacitor modules 6, so that the risk of address disorder caused by wrong position placement in the assembling process is avoided; the nameplate 10 can be fixed on the front side wall of the capacitor box 5 through bolts or rivets.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.

Claims (10)

1. A capacitor energy storage device, comprising:

a plurality of switch assemblies (3), the switch assemblies (3) comprising an incoming line end and an outgoing line end, the incoming line end of each switch assembly (3) being adapted to be connected to an electrical grid;

the capacitor assemblies are respectively connected with the wire outlet ends of the switch assemblies (3);

the energy storage cabinet (9), each capacitor assembly is arranged in the energy storage cabinet (9);

each capacitor assembly is electrically connected with the power grid through each switch assembly (3) to form a main loop, and each switch assembly (3) is suitable for controlling each capacitor assembly to switch on or switch off the main loop.

2. The capacitor energy storage device according to claim 1, further comprising a main switch (4), wherein the main switch (4) is disposed between the power grid and the switch assemblies (3), one end of the main switch (4) is connected to the power grid, and the incoming line end of each switch assembly (3) is connected in parallel and then connected to the other end of the main switch (4).

3. Capacitor energy storage device according to claim 2, characterized in that the switch assembly (3) comprises a circuit breaker (31) and a contactor (32), one end of the circuit breaker (31) being electrically connected with the end of the main switch (4) facing away from the grid, the other end of the circuit breaker (31) being electrically connected with one end of the contactor (32), the other end of the contactor (32) being electrically connected with the capacitor assembly.

4. A capacitor energy storage device according to claim 3, characterized in that the switch assembly (3) further comprises a control management device (33), the capacitor assembly comprises a plurality of capacitor boxes (5), a plurality of capacitor modules (6) and a plurality of equalization control devices (7), each capacitor box (5) is internally adapted to mount the capacitor modules (6) and the equalization control devices (7), one end of the equalization control device (7) is electrically connected with the capacitor modules (6), and the other end of the equalization control device (7) is electrically connected with the control management device (33).

5. The capacitor energy storage device according to claim 4, wherein the capacitor module (6) comprises a positive electrode connecting part (61), a negative electrode connecting part (62), a plurality of capacitor units (63) and a plurality of connecting parts (64), the plurality of capacitor units (63) are sequentially connected in series through the connecting parts (64), and two capacitor units (63) at the head end and the tail end are respectively and electrically connected with the positive electrode connecting part (61) and the negative electrode connecting part (62);

the capacitor assembly further comprises a plurality of connecting wires, the capacitor modules (6) are sequentially connected in series and are adjacent to each other, the positive connecting portions (61) and the negative connecting portions (62) on the capacitor modules (6) are connected through the connecting wires, and the capacitor modules (6) are located at the head end and the tail end and deviate from the contactor (32) to be electrically connected with one end of the circuit breaker (31).

6. A capacitor energy storage device according to claim 5, characterized in that said positive connection (61) and said negative connection (62) are arranged through a side wall of said capacitor box (5).

7. The capacitor energy storage device according to claim 5, characterized in that the equalization control device (7) comprises a control board (71), a voltage equalization wiring harness (72), a temperature acquisition wiring harness and a plurality of temperature sensors which are arranged in the capacitor box body (5), each capacitor unit (63) is electrically connected with one end of the voltage equalization wiring harness (72), the other end of the voltage equalization wire harness (72) is electrically connected with the control board (71), the voltage equalization wiring harness (72) is used for acquiring voltage data of each capacitor unit (63), each temperature sensor is respectively arranged on each connecting piece (64), each temperature sensor is respectively and electrically connected with one end of the temperature acquisition wiring harness, the other end of the temperature acquisition wire harness is electrically connected with the control board (71), and the temperature sensor is used for acquiring temperature data of each capacitor unit (63); the control board (71) is electrically connected with the control management device (33) to upload the voltage data and the temperature data.

8. Capacitor energy storage device according to claim 7, characterized in that a side wall of the capacitor box (5) is provided with a maintenance window (51), and the control board (71) is arranged in the capacitor box (5) adjacent to the maintenance window (51).

9. The energy storage capacitor device according to claim 7, wherein a voltage acquisition interface (711) and a temperature acquisition interface (712) are provided on the control board (71), an end of the voltage equalization harness (72) facing the control board (71) is electrically connected to the voltage acquisition interface (711), and an end of the temperature acquisition harness facing the control board (71) is electrically connected to the temperature acquisition interface (712).

10. The capacitor energy storage device according to claim 4, further comprising a touch screen (1) and a control host (2), wherein each control management device (33) is electrically connected with the control host (2), and the control host (2) is electrically connected with the touch screen (1); the touch screen (1) is arranged on the energy storage cabinet (9).

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