CN104600378B - HVDC disjunction case and battery pile - Google Patents

Abstract

The invention discloses a high-voltage direct current breaking box, which comprises a breaking box body, a cover plate, an insulator, a first copper bar, a fuse, a contactor, a second copper bar, an electrode joint, a terminal assembly and an emergency stop switch; The box body and the cover plate are closed, the insulator and the contactor are arranged on the inner surface of the bottom plate of the breaking box body, the second copper bar and the electrode joint are respectively arranged on the inner surface and the outer surface of the rear panel of the breaking box body, the second copper bar and the electrode Joint connection, the terminal assembly and the emergency stop switch are arranged on the outer surface of the front panel of the breaking box body, the second copper bar and the fuse are arranged on the insulator, and the second copper bar, the contactor, and the fuse pass through the first The copper bar is connected, the decibel of the emergency stop switch is connected with the contactor and one terminal assembly, and the fuse is connected with the other terminal assembly. It also discloses a battery stack. The invention realizes the emergency disconnection of the battery stack through the emergency stop switch, the contactor, etc., and achieves the technical effect of ensuring the safety of maintenance work.

Description

HVDC breaker box and battery stack

technical field

The invention belongs to the field of power supplies, in particular to a high-voltage direct current breaking box and a battery stack.

Background technique

Lithium batteries have been widely used due to their high energy density, small self-discharge, no memory effect, green environmental protection, long service life and high voltage of single battery. As a mainstream battery product for mobile devices, lithium batteries are gradually developing towards high-power, high-current and high-voltage power supply equipment. However, the voltage of lithium batteries cannot meet the needs of medium and high-power equipment. It is necessary to connect multiple batteries in series to form a battery stack to meet the input voltage required by the power supply equipment or its power adapter circuit.

However, many abnormal situations may occur during the use of the battery stack, such as short circuit and overcurrent, so the battery stack needs to be overhauled. However, because the voltage of the battery stack is high, and the existing battery stack does not have a safety device that causes the emergency shutdown of the battery stack, there is a great safety problem in the maintenance work of the battery stack.

To sum up, when the battery stack is abnormal, the technical problem of how to ensure the safety of the maintenance work is a technical problem that needs to be solved urgently.

Contents of the invention

The main purpose of the present invention is to provide a high-voltage DC breaking box, which solves the technical problem that the safety of maintenance work cannot be ensured when the battery stack is abnormal.

To achieve the above object, the present invention provides a high-voltage DC breaking box, which includes a breaking box body, a cover plate, multiple insulators, three first copper bars, a fuse, a contactor, Two second copper bars, two electrode joints, two terminal assemblies and an emergency stop switch; the top of the break box body is covered with the cover plate, and the insulator and the contactor are arranged on the The inner surface of the bottom plate of the breaking box body, the second copper bar is arranged on the inner surface of the rear panel of the breaking box body, the electrode joint is arranged on the outer surface of the back panel of the breaking box body, and each second copper bar connected with an electrode joint, the terminal assembly and the emergency stop switch are arranged on the outer surface of the front panel of the breaking box body, the second copper bar and the fuse are arranged on the insulator, the The second copper bar is connected to the contactor through the first copper bar, the second copper bar is connected to the fuse through the first copper bar, and the contactor is connected to the fuse through the first copper bar. The contactor is connected to the emergency stop switch through a cable, the emergency stop switch is connected to one terminal assembly through a cable, and the fuse is connected to the other terminal assembly through a cable Component connections.

Preferably, an insulating plate is provided at each of the electrode joints on the rear panel of the breaker box body, and the electrode joints pass through the insulating plate.

Preferably, the contactor includes an electromagnetic coil and a spring switch, the electromagnetic coil is used to generate a magnetic field when energized, so as to attract the spring switch to ensure the conduction of the circuit, and when an abnormality occurs, the magnetic field disappears so that The spring switch pops open, breaking the circuit.

Preferably, the electrode connector includes a connecting plate and three electrodes, the connecting plate is arranged between the insulating plate and the second copper bar, the connecting plate is connected to the second copper bar, the The electrodes are arranged on the connecting board, and the electrodes penetrate through the insulating board.

Preferably, an indicator light is provided on the outer surface of the front panel of the breaking box body.

Preferably, one hanging lug is respectively provided on the left and right ends of the front panel of the breaking box body.

Preferably, each terminal assembly includes a terminal and a terminal housing, and the terminal housing covers the terminal.

In addition, in order to achieve the above object, the present invention also provides a battery stack, which includes two above-mentioned high-voltage DC breaker boxes, a battery stack installation frame and a plurality of batteries, and the battery stack installation frame includes a plurality of transverse pillars and Longitudinal pillars and multiple wire slots, the horizontal pillars are arranged perpendicular to the longitudinal pillars to form a plurality of battery installation cavities, the wire grooves are arranged on the horizontal pillars or the longitudinal pillars, and one of the high-voltage DC breaker boxes is arranged on The battery installation chamber at the bottom of the battery stack installation frame, the other said high-voltage DC breaking box is arranged in the battery installation chamber at the top of the battery stack installation frame, and the battery is arranged in the remaining battery installation chamber of the battery stack installation frame.

When an abnormal situation occurs in the battery stack, the invention cuts off the power supply of the contactor through the emergency stop switch, so that the circuit of the contactor is disconnected, so that the circuit of the battery stack is disconnected urgently, and the technical effect of ensuring the safety of maintenance work is achieved.

Instructions attached

Fig. 1 is a schematic structural view of Embodiment 1 of the high-voltage DC breaking box of the present invention;

Fig. 2 is a schematic structural view of Embodiment 2 of the high-voltage DC breaking box of the present invention;

Fig. 3 is a schematic structural view of Embodiment 3 of the electrode joint in the high-voltage DC breaking box of the present invention;

Fig. 4 is a schematic structural view of Embodiment 4 of the high voltage direct current breaking box of the present invention;

Fig. 5 is a schematic structural view of Embodiment 5 of the high-voltage DC breaking box of the present invention;

Fig. 6 is a schematic structural view of Embodiment 6 of the high-voltage DC breaking box of the present invention;

Fig. 7 is a schematic structural view of Embodiment 7 of the battery stack of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Example 1

Referring to Fig. 1, Fig. 1 is a schematic structural diagram of Embodiment 1 of the high-voltage direct current breaking box of the present invention. In Embodiment 1, the present invention provides a high-voltage DC breaking box, which includes a breaking box body 1, a cover plate, a plurality of insulators 2, three first copper bars 3, a fuse 4, and a contactor 5. Two second copper bars 6, two electrode joints 7, two terminal assemblies 8 and an emergency stop switch 9; the top of the breaking box body 1 is covered with the cover plate, and the insulator 2 and The contactor 5 is arranged on the inner surface of the bottom plate of the breaking box body 1, the second copper bar 6 is arranged on the inner surface of the rear panel of the breaking box body 1, and the electrode joint 7 is arranged on the breaking box body On the outer surface of the rear panel of the main body 1, each second copper bar 6 is connected to an electrode joint 7, and the terminal assembly 8 and the emergency stop switch 9 are arranged on the outer surface of the front panel of the breaking box main body 1, so The second copper bar 6 and the fuse 4 are arranged on the insulator 2, the second copper bar 6 is connected to the contactor 5 through the first copper bar 3, and the second copper bar 6 It is connected with the fuse 4 through the first copper bar 3, the contactor 5 is connected with the fuse 4 through the first copper bar 3, and the contactor 5 is connected with the emergency stop switch 9 through a cable. The emergency stop switch 9 is connected to one terminal assembly 8 through a cable, and the fuse 4 is connected to the other terminal assembly 8 through a cable.

First of all, the top of the breaking box body 1 of the present invention is provided with an opening, and the cover plate is arranged at the opening to realize the closing of the opening of the breaking box body 1, or the opening of the opening of the breaking box body 1, so as to facilitate the maintenance of the high-voltage DC breaking box. technical effect.

Secondly, the present invention arranges the fuse 4 and the second copper bar 6 on the insulator 2, which ensures the insulation of the second copper bar 6, the fuse 4 and the breaking box body 1, and further improves the safety performance of the high-voltage DC breaking box.

Secondly, the second copper bar 6 of the present invention is connected to the contactor 5 through the first copper bar 3, the second copper bar 6 is connected to the fuse 4 through the first copper bar 3, and the contactor 5 and the fuse 4 are connected through the first copper bar 3. The row 3 connection, because the batteries inside the high-voltage DC breaker box are all high current, so the first copper row 3 is used to connect the contactor 5, the second copper row 6, and the fuse 4. On the one hand, it avoids the large current causing the contactor 5. The connecting line between the second copper bar 6 and the fuse 4 is overheated, so that a fault occurs. On the other hand, the technical effect of being easy to install is achieved.

Again, the high-voltage DC breaking box of the present invention has a rectangular box structure, which is consistent with the structure of the battery cells of the existing battery stack, so the high-voltage DC breaking box of the present invention can be accommodated in the installation cavity of the battery cells In the body, the technical effects of easy installation, maintenance and simplified operation are achieved.

Finally, when an abnormal situation occurs in the battery stack, the present invention cuts off the power supply of the contactor 5 through the emergency stop switch 9, so that the circuit of the contactor 5 is disconnected, so that the circuit of the battery stack is disconnected urgently, thereby achieving the technology of ensuring the safety of maintenance work Effect.

Example 2

Referring to Fig. 2, Fig. 2 is a schematic structural diagram of Embodiment 2 of the high-voltage direct current breaking box of the present invention.

In Embodiment 2, the structure is basically the same as that of Embodiment 1 above, except that an insulating plate 10 is provided at each of the electrode joints 7 on the rear panel of the breaker box body 1, and the electrode joints 7 through the insulating board 10 .

The present invention arranges an insulating plate 10 at each electrode joint 7 of the rear panel of the breaking box body 1, and the second copper bar 6 and the electrode joint 7 are arranged on the insulating plate 10, thereby avoiding the contact between the electrode joint 7 and the second copper bar 6. The contact with the metal shell of the breaking box body 1 further improves the safety performance of the high-voltage DC breaking box.

Further, the contactor 5 includes an electromagnetic coil and a spring switch, the electromagnetic coil is used to generate a magnetic field when energized, so as to attract the spring switch to ensure the conduction of the circuit, and is used to disappear the magnetic field when an abnormality occurs, As a result, the spring switch pops open, thereby breaking the circuit.

When the battery stack works normally, the current generated by the battery stack flows through the electromagnetic coil of the contactor 5, the electromagnetic coil generates a magnetic field, and the electric core in the electromagnetic coil generates suction force, so as to attract the spring switch to ensure the circuit conduction.

When the battery is abnormal, the voltage or current of the electromagnetic coil of the contactor 5 drops significantly, so that the suction force generated by the battery core of the battery coil is too small, so that the spring switch pops open, thereby disconnecting the circuit of the battery stack.

Example 3

Referring to Fig. 3, Fig. 3 is a schematic structural view of Embodiment 3 of the electrode joint in the high-voltage DC breaking box of the present invention.

In Embodiment 2, the structure is basically the same as that of Embodiment 1 above, except that the electrode connector 7 includes a connecting plate 11 and three electrodes 12, and the connecting plate 11 is arranged between the insulating plate 10 and the Between the second copper bars 6 , the connecting plate 11 is connected to the second copper bars 6 , the electrodes 12 are arranged on the connecting plates 11 , and the electrodes 12 penetrate through the insulating plate 10 .

The electrode connector 7 of the present invention includes a connection plate 11 and three electrodes 12, and is connected to the second copper bar 6 through the connection plate 11, achieving the technical effects of easy installation and more stable connection.

The present invention also arranges three electrodes 12 on the connecting plate 11, the three electrodes 12 are in contact with the corresponding electrodes on the battery stack mounting frame, and through the triangular structure, the technical effect of ensuring good contact between the electrodes is achieved.

Example 4

Referring to Fig. 4, Fig. 4 is a schematic structural view of Embodiment 4 of the high-voltage direct current breaking box of the present invention.

In Embodiment 4, the structure is basically the same as that of Embodiment 2 above, except that an indicator light 13 is provided on the outer surface of the front panel of the breaking box body 1 .

The present invention is provided with an indicator light 13, which is convenient for staff to know the working status of the high-voltage direct current breaking box in real time.

When the battery stack is abnormal, the indicator light 13 outputs the fault information by displaying different colors or flashing, so that the staff can handle the fault information displayed by the indicator light 13 .

For example: when the fuse 4 in the high-voltage DC breaking box is blown, a new fuse 4 needs to be replaced. The indicator light 13 outputs the information in the form of an optical signal, which is convenient for the staff to understand that the reason for the disconnection of the battery stack circuit is that the fuse 4 has been blown and needs to be replaced to cause the normal operation of the battery stack.

Example 5

Referring to Fig. 5, Fig. 5 is a schematic structural diagram of Embodiment 5 of the high-voltage direct current breaking box of the present invention.

In Embodiment 5, the structure is basically the same as that of Embodiment 2 above, except that a hanging lug 14 is provided on the left and right ends of the front panel of the breaking box body.

In the present invention, a hanging lug 14 is respectively arranged on the left and right ends of the front panel of the breaking box body 1, and is fixedly connected to the battery stack installation frame through the hanging lug 14 through the screw, so that the high-voltage DC breaking box and the battery stack are installed The fixed connection of the frame achieves the technical effect of ensuring good contact between the electrode joints of the high-voltage DC breaker box and the electrodes on the battery stack mounting frame during the operation of the battery stack.

At the same time, when the high-voltage DC breaking box fails, it can be disassembled only by unscrewing the screws, achieving the technical effect of easy installation and disassembly.

Example 6

Referring to Fig. 6, Fig. 6 is a schematic structural diagram of Embodiment 6 of the high-voltage direct current breaking box of the present invention.

In Embodiment 6, the structure is basically the same as that of Embodiment 1 above, except that each terminal assembly 8 includes a terminal 16 and a terminal housing 15, and the terminal housing 15 covers on the terminal 16.

In the present invention, a terminal assembly 8 is formed by a terminal 16 and a terminal housing 15, which avoids the leakage of wires at the terminal 16 and further improves the safety performance of the high-voltage DC breaking box.

Example 7

Referring to FIG. 7 , FIG. 7 is a schematic structural diagram of Embodiment 7 of the battery stack of the present invention.

In order to achieve the above purpose, Embodiment 7 of the present invention also provides a battery stack, which includes two above-mentioned high-voltage DC breaker boxes 20, a battery stack mounting frame 22 and a plurality of batteries 21, and the battery stack mounting frame 22 includes A plurality of horizontal pillars and longitudinal pillars and a plurality of wire grooves 23, the horizontal pillars and the longitudinal pillars are vertically arranged to form a plurality of battery installation cavities, the wire grooves 23 are arranged on the horizontal pillars or the longitudinal pillars, and one of the The high-voltage DC breaking box 20 is set in the battery installation cavity at the bottom of the battery stack mounting frame 22, and the other high-voltage DC breaking box 20 is set in the battery mounting cavity at the top of the battery stack mounting frame 22, and the battery 21 is set in the battery stack installation cavity. bracket the remaining battery mounting cavity.

The battery stack of the present invention is externally connected to a control cabinet, and the control cabinet includes a BMS (battery management system), an ampere-hour meter, a display screen, switches and the like.

The battery stack of the present invention achieves the technical effect of avoiding cable leakage and improving the safety performance of the battery stack by setting the wire groove 23 .

Both the high-voltage direct current breaking box 20 and the battery 21 of the present invention are installed in the battery installation cavity, achieving the technical effect that the high-voltage direct current breaking box 20 and the battery 21 are easy to install and disassemble.

The specific embodiments of the invention have been described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the invention are also within the scope of the present invention, therefore, equivalent transformations, modifications and improvements made without departing from the spirit and scope of the present invention etc., should be covered within the scope of the present invention.

Claims (8)

1. a HVDC disjunction case, it is characterised in that it include a disjunction case body, One cover plate, multiple insulator, three the first copper bars, fuse, catalyst, Two the second copper bars, two electrode contacts, two connecting terminal components and an emergency stop switch； The top of described disjunction case body covers with described cover plate, and described insulator and described catalyst set Being placed in the inner surface of described disjunction case body base plate, described second copper bar is arranged at described disjunction case The inner surface of body rear board, described electrode contact is arranged at described disjunction case body rear board Outer surface, each second copper bar and electrode contact connect, described connecting terminal components and Described emergency stop switch is arranged at the outer surface of described disjunction case body front panel, described second copper bar Being arranged on described insulator with described fuse, described second copper bar passes through with described catalyst Described first copper bar connects, and described second copper bar is with described fuse by described first copper bar even Connecing, described catalyst is connected by the first copper bar with described fuse, and described catalyst passes through line Cable is connected with described emergency stop switch, and described emergency stop switch passes through cable and a described binding post Assembly connects, and described fuse is connected with connecting terminal components another described by cable.

HVDC disjunction case the most according to claim 1, it is characterised in that described It is provided with an insulation board, described electricity at each described electrode contact of disjunction case body rear board Pole joint runs through described insulation board.

HVDC disjunction case the most according to claim 1, it is characterised in that described Catalyst includes a solenoid and a snap switch, and described solenoid is used for being energized Time, producing magnetic field, so that holding snap switch, it is ensured that circuit turn-on, and being used for occurring different Chang Shi, magnetic field disappears, so that snap switch flicks, thus circuit disconnects.

HVDC disjunction case the most according to claim 2, it is characterised in that described Electrode contact includes a connecting plate and three electrodes, and described connecting plate is arranged at described insulation board And between described second copper bar, described connecting plate is connected with described second copper bar, and described electrode sets Being placed on described connecting plate, described electrode runs through described insulation board.

HVDC disjunction case the most according to claim 2, it is characterised in that described The outer surface of disjunction case body front panel is provided with a display lamp.

HVDC disjunction case the most according to claim 2, it is characterised in that it is special Levy and be, the left and right both ends of described disjunction case body front panel are respectively equipped with a hangers.

HVDC disjunction case the most according to claim 1, it is characterised in that each Individual described connecting terminal components includes a binding post and a binding post housing, described in connect Line terminals case lid is on described binding post.

8. a battery pile, it is characterised in that it includes the height described in two claim 1 Straightening flow point breaks case, a battery pile installing rack and multiple battery, described battery pile installing rack Including multiple lateral struts and vertical pillar and multiple wire casing, described lateral struts is vertical with described Being vertically arranged to pillar, form multiple battery installation cavity, described wire casing is arranged at described horizontal Post or vertical pillar, a described HVDC disjunction case is arranged at the end of battery pile installing rack The battery installation cavity in portion, another described HVDC disjunction case is arranged at battery pile installing rack The battery installation cavity at top, battery is arranged at battery pile installing rack remaining battery installation cavity.