KR101666376B1 - Harness Cover - Google Patents

Abstract

The present invention relates to a battery module assembly in which submodules each including two or more unit modules are arranged in a plane, a harness cover mounted on an upper surface of the unit modules and measuring a voltage and a temperature of the unit modules, An electrically insulating body extending in an array direction of the unit modules; Electrically insulating branches extending in a direction of each of the unit modules from the body; Voltage sensing wires mounted on top of each of the body and the branches; And temperature sensing wires mounted on upper surfaces of the central branches of the branches.

Description

Harness Cover

The present invention relates to a harness cover.

BACKGROUND ART [0002] In recent years, a rechargeable secondary battery has been widely used as an energy source for wireless mobile devices, and has been widely used as an energy source for electric vehicles EV, a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (Plug-In HEV), and the like.

In addition, technologies related to a power storage device that stores electricity and supplies it to a power system in a stable manner at a required time are being developed. Power storage devices are devices that store energy when power demand is low, and supply power in the event of an overload or an emergency, thereby providing an effect of improving power quality and energy use efficiency. In particular, residential power storage devices and industrial or commercial medium power storage devices are rapidly gaining market share in conjunction with Smart Grid technology.

Meanwhile, in order for the battery module to provide the output and capacity required by a predetermined device or device, a plurality of battery cells are electrically connected in series or parallel manner to constitute a battery module.

The battery module configured as described above measures the voltage and temperature of each of the battery cells to prevent overvoltage and overheating of the battery cells through the BMS (Battery Management System).

Conventionally, in order to measure the voltage and the temperature of the battery cells, the operator has to directly connect the voltage sensing wires and the temperature sensing wires to the battery cells, respectively, thereby causing a problem that the work process is delayed and the defective rate of the battery increases.

Therefore, there is a high need for a technique capable of fundamentally solving such problems.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art and the technical problems required from the past.

Specifically, it is an object of the present invention to provide a harness cover that is structurally stable and can be easily mounted on unit modules so that the voltage and temperature of the unit modules can be measured.

According to an aspect of the present invention,

1. A battery module assembly in which submodules each including two or more unit modules are arranged in a plane is mounted on an upper surface of the unit modules to measure voltage and temperature of the unit modules,

An electrically insulating body extending in an array direction of the unit modules;

Electrically insulating branches extending in a direction of each of the unit modules from the body;

Voltage sensing wires mounted on top of each of the body and the branches; And

Temperature sensing wires mounted on top of the central branches of the branches;

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That is, since the harness cover according to the present invention is composed of the main body and the branches capable of mounting the voltage sensing wires and the temperature sensing wires, the harness cover can be stably mounted on the upper surface of the unit modules, As shown in Fig.

The unit module may have a structure in which a plurality of cylindrical battery cells are electrically connected in series or in parallel while being mounted on a pair of cell frames.

Specifically, the pair of cell frames may include a first cell frame on which a first terminal portion of the battery cells is mounted, and a second cell frame on which a second terminal portion of the battery cells is mounted. The first terminal portion may be a positive terminal portion, the second terminal portion may be a negative terminal portion, and vice versa.

In the first cell frame and the second cell frame, openings through which the first terminal and the second terminal of the cylindrical battery cell are exposed may be perforated. The openings may have a shape corresponding to the cylindrical battery cell.

The first terminals and the second terminals mounted on the first and second cell frames and exposed through the openings may be connected by a pair of terminal plates.

The terminal plates may include a first terminal plate connected to the first terminal of the battery cells and a second terminal plate connected to the second terminal of the battery cells, May be mounted on the outer surface of the cell frames, while being connected to the terminals.

The first and second terminal plates may be coupled to each of the first and second terminals by resistance welding.

Module terminals may be formed at upper end central portions of the first and second cell frames, and a portion of an upper end of the terminal plate may extend in the module terminal direction so that the terminal plates can be electrically contacted to the module terminals Can be.

When the sub-modules are arranged in the direction of the electrode terminal of the battery cell, the second cell frame of the unit module of the heating unit and the first cell frame of the unit module of the subsequent unit are adjacent to each other, A bus bar may be coupled to a module terminal, and the unit modules may be electrically connected in series in the sub-module.

In one embodiment of the present invention, the main body and the branches may be integrally formed, and the main body and the branches may be plate-shaped, and an outer peripheral wall protruding upwardly may be formed on the peripheral portion.

Specifically, the branches may include two or more left branches and two or more right branches based on the body, and the number of the branches may be increased or decreased depending on the number of sensing wires to be mounted.

The left branches and the right branches may form a symmetrical structure with respect to the body, but may be formed in an asymmetric structure. This may vary depending on the number and arrangement of unit modules to which the harness cover is mounted.

And a branch reinforcement member extending from the branches may be coupled between the branches in the unit module array direction. Since the branch reinforcing member is formed integrally with the branches, it is possible to ensure the structural stability of the branches.

In addition, the branches may have opposite end portions to the body forming a downward stepped structure. Such a stepped structure may be a structure for more easily coupling the sensing wires to the module terminal since the module terminal to which the sensing wires are coupled is formed to be spaced downward from the uppermost end face of the unit module in the unit module.

Meanwhile, a structure for fastening the harness cover to the upper cover plate of the battery module assembly may include a nut or a nut to be fastened to the cover plate of the battery module by injection molding or the like, As another structure, the two or more branches of the branches may have fastening grooves formed therein, and a threaded structure may be formed inside the fastening grooves. Therefore, the harness cover and the upper cover plate of the battery module assembly can be fastened by inserting the bolt into the nut or the fastening groove.

In one specific example, the voltage sensing wire may be connected to each of the unit modules along the upper surface of the body and the upper surface of the branch. More specifically, on the upper surface of the main body, two or more wire fastening grooves may be formed to mount a voltage sensing wire to the main body, and wire fastening protrusions corresponding to the wire fastening grooves may be formed on the voltage sensing wire .

Further, in another specific example, a fastening structure may be formed on the upper surface of the branch so that the voltage sensing wire can be fastened. More specifically, the fastening structure may be a hook or a band clip.

As described above, the temperature sensing wire may be physically coupled to the voltage sensing wire mounted on the main body and the branch by the fastening structure. A BMS connector may be formed at one end of the voltage sensing wire and the temperature sensing wire so as to be able to transmit voltage and temperature signals to the BMS of the battery module assembly.

Further, in the harness cover according to the present invention, one of the branches may be further provided with a serial wire so that the submodules can be connected in series.

The present invention also provides a battery module assembly including the harness cover as a member for measuring voltage and temperature.

The present invention also provides a battery pack including the battery module assembly.

The present invention also provides a device comprising the battery pack as a power source, wherein the device is in particular a household power supply, a public utility power supply, a large shop power supply, an emergency power supply, a computer room power supply, A medical equipment power supply, a fire extinguishing equipment power supply, an alarm equipment power supply, an evacuation facility power supply, an electric vehicle, a hybrid electric vehicle, or a plug-in hybrid electric vehicle.

The structure and manufacturing method of such a device are well known in the art, so a detailed description thereof will be omitted herein.

As described above, since the harness cover according to the present invention is composed of the body and the branches capable of mounting the voltage sensing wires and the temperature sensing wires, the harness cover can be stably mounted on the upper surface of the unit modules, The wires can be easily connected to the unit module.

1 is a perspective view of a harness cover according to one embodiment of the present invention;
2 is a perspective view of a unit module in which the harness cover of Fig. 1 is mounted;
FIG. 3 is a perspective view of a battery module assembly including the harness cover of FIG. 1 as a member for measuring voltage and temperature.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, but the present invention is not limited by the scope of the present invention.

FIG. 1 is a perspective view of a harness cover according to one embodiment of the present invention, and FIG. 2 is a perspective view of a unit module to which the harness cover of FIG. 1 is mounted. A battery module assembly included as a member for measuring voltage and temperature is shown in a perspective view.

1 to 3, a harness cover 100 includes a body 110, branches 120, voltage sensing wires 130, temperature sensing wires 140, and a serial wire 150 .

The main body 110 is formed extending in the arrangement direction of the unit modules 200. The branches 120 branch out from the main body 110 in the direction of each of the unit modules so that the left and right branches And a symmetrical structure is formed on the basis of the main body 110. The main body 110 and the branches 120 are formed in an integrated structure and the main body 110 and the branches 120 are formed in a plate shape and an outer peripheral wall 170 protruding upward is formed on the outer periphery thereof , The opposite ends 121 of the branches 120 to the body 110 form a downward stepped structure.

Also, between the branches 120, the branch reinforcing members 180 are formed integrally with the branches 120 in the direction of the unit module arrangement. Due to such a structure, the structural stability of the branches 120 can be secured.

In the branches 120, fastening grooves 122 are formed so as to be fastened to the upper cover plate (not shown) of the battery module assembly. The inside of the fastening grooves 122 is a threaded structure.

The voltage sensing wires 130 and the temperature sensing wires 140 are physically coupled and the voltage sensing wires 130 and the temperature sensing wires 140 are connected to the hook 120 formed on the upper surface of the branches 120. [ And one end of the voltage sensing wires 130 and the temperature sensing wires 140 are connected to the BMS (not shown) of the battery module assembly and are connected to the voltage and / A BMS connector 160 is formed so as to transmit a temperature signal.

In addition, a serial wire 150 is mounted on the rearmost branches of the harness cover 100 so that the submodules 300 can be electrically connected in series.

2, the unit module 200 includes a plurality of cylindrical battery cells 210, a first frame 220, a second frame 230, a first terminal plate 240, a second terminal plate 250, And bolts (260).

The first frame 220 and the second frame 230 are formed with a shape corresponding to the battery cells 210 so that the first terminal 211 and the second terminal 212 of the battery cells 210 can be exposed. Openings 221 and 231 are formed.

The battery cells 210 are inserted into the first frame 220 and the second frame 230 and the first terminals 211 and the second terminals 212 exposed from the openings 221 and 231 The first terminal plate 240 and the second terminal plate 250 are connected and electrically connected in parallel.

Module terminals 222 and 232 which are electrically connected to the first terminal plate 240 and the second terminal plate 250 are protruded from the upper center portion of the first frame 220 and the second frame 230 have.

At both upper portions of the first frame 220 and the upper portion of the second frame 230, a rivet structure is formed to achieve fastening between the frames. A rivet protruding portion 223 is formed on both upper end portions of the first frame 220 and a rivet engaging groove 233 is formed at both upper end portions of the second frame 230 so that the rivet protruding portion 223 can be inserted. Respectively.

Screw grooves 224 and 234 are formed in the first frame 220 and the second frame 230. Bolts 260 are inserted into the screw grooves 224 and 234, The fastening between the first frame 220 and the second frame 230 can be secured.

The first frame 220 and the second frame 230 may be formed in the same manner as the first and second frames 220 and 230 when the plurality of unit modules 200 are arranged in the direction of the electrode terminals of the battery cells, .

Coupling grooves 225 and 235 for fastening the base plate 400 are formed on both sides of the lower ends of the first frame 220 and the second frame 230, respectively. These fastening grooves 225 and 235 have a structure in which the first frame 220 and the second frame 230 are vertically overlapped with each other.

The battery module assembly 800 includes submodules 300, a base plate 400, a front cover plate 500, a rear cover plate 600, an upper cover plate (not shown), a BMS 700, a relay (Not shown), a fuse (not shown), and a harness cover 100

The submodules 300 are electrically connected to each other in a state where the plurality of unit modules 200 are arranged in the direction of the battery cell electrode terminal and are mounted on the base plate 400 in a state where they are spaced apart from each other have.

These submodules 300 are electrically connected in series by a serial wire 150 mounted on the rearmost branch 120 of the harness cover 100 mounted on the upper surface of the submodules 300 .

Output terminals 530 are formed at both ends of the front cover plate 500. A first through groove 510 is formed in a central portion of the front cover plate 500. A fuse cover 520 is formed on the left side of the first through groove 510, (Not shown) is formed so that the first through-hole can be mounted.

The submodules 300 and the input / output terminals 530 are electrically connected to each other with a relay (not shown) and a fuse (not shown) interposed therebetween.

The BMS 700 has a hexahedron structure and is mounted in a spaced space between the submodules 300. Communication terminals 710 are formed at the upper and lower ends of the front surface of the BMS 700, Protruding from the first through grooves 510 of the plate 500.

The BMS 700 is electrically connected to a voltage sensing wire 130 and a temperature sensing wire 140 that measure voltage and temperature of the unit modules 200 of the harness cover 100.

The submodules 300 and the BMS 700 are mounted on a base plate 400. A front surface of the base plate 400 is coupled to a base plate 400 and an upper cover plate A cover plate 500 is mounted.

A guide rail 410 is formed on the upper surface of the base plate 400 so that the unit modules 200 can be slidably mounted on the upper surface of the base plate 400. First guide grooves Is formed. A rail groove (not shown) having a structure corresponding to the shape of the guide rail 410 is formed at the lower end of the unit modules 200 so as to be mounted on the base plate 400.

It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (22)

1. A battery module assembly in which submodules each including two or more unit modules are arranged in a plane is mounted on an upper surface of the unit modules to measure voltage and temperature of the unit modules,
An electrically insulating body extending in an array direction of the unit modules;
Electrically insulating branches extending in a direction of each of the unit modules from the body;
Voltage sensing wires mounted on top of each of the body and the branches; And
Temperature sensing wires mounted on top of the central branches of the branches;
Wherein the cover is a metal plate. The harness cover according to claim 1, wherein the unit module has a structure in which a plurality of cylindrical battery cells are electrically connected to a pair of cell frames. The harness cover according to claim 1, wherein the main body and the branches are integrally formed. The harness cover according to claim 1, wherein the main body and the branches are plate-shaped, and an outer peripheral wall protruding upward is formed on the outer peripheral portion. The harness cover of claim 1, wherein the branches comprise two or more left branches and two or more right branches relative to the body. 6. The harness cover according to claim 5, wherein the left branches and the right branches form a symmetrical structure with respect to the body. The harness cover of claim 1, wherein the branches form opposite stepped ends to the body. The harness cover according to claim 1, wherein a nut for inserting into the cover plate of the battery module assembly is injection-molded into the main body or the branch. The harness cover according to claim 1, wherein the two or more branches of the branches are formed with fastening grooves so as to be fastened to the upper cover plate of the battery module assembly. The harness cover according to claim 9, wherein an inner side of the coupling grooves has a threaded structure. The harness cover according to claim 1, wherein the voltage sensing wire is connected to the unit module along the upper surface of the main body and the upper surface of the branch. [12] The apparatus of claim 11, wherein at least two wire fastening grooves are formed on an upper surface of the main body so as to mount a voltage sensing wire to the main body, and wire fastening projections corresponding to the wire fastening grooves are added to the voltage sensing wire Wherein the first and second harness cover parts are provided on the outer surface of the housing. The harness cover according to claim 11, wherein a fastening structure is formed on the upper surface of the branch so that the voltage sensing wire and the temperature sensing wire can be fastened. 14. The harness cover of claim 13, wherein the fastening structure is a hook. 14. The harness cover of claim 13, wherein the fastening structure is a band clip. 14. The harness cover of claim 13, wherein the temperature sensing wire is physically coupled to the voltage sensing wire by the fastening structure. 17. The harness cover according to claim 16, wherein a BMS connector is formed at one end of the voltage sensing wire and the temperature sensing wire, the BMS connector being connected to the BMS of the battery module assembly to transmit voltage and temperature signals. The harness cover of claim 1, wherein one of the branches is further equipped with a serial wire so that the submodules can be connected in series. A battery module assembly comprising a harness cover according to any one of claims 1 to 18 as a member for measuring voltage and temperature. A battery pack comprising the battery module assembly according to claim 19. A device according to claim 20, comprising a battery pack. 22. The system of claim 21, wherein the device is one or more of a home power supply, a public utility power supply, a large store power supply, an emergency power supply, a computer room power supply, a portable power supply, , An evacuation facility power supply, an electric car, a hybrid electric car, or a plug-in hybrid electric car.

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