KR20120081402A - Effective battery cell series & parallel connection system and battery module assembling - Google Patents

Abstract

The present invention provides a parallel connection system of a plurality of battery cells by securing a space of the battery cells in the cell connection cartridge of the insulator and repeatedly using the connection cartridge of the same structure.
This connection system connects two adjacent poles directly between the conductive connectors with bolt nut structure, enabling selective exchange of defective cells and assembly of battery modules with the desired number of battery cells, depending on the degree of aging. There is an advantage that the installation of the battery pack is possible
In addition, by combining space bars of different thicknesses with the cell connection cartridge side support bars, which are insulators, battery modules of the same capacity and different thicknesses (e.g. 60 Ah / 6 mm, 80 Ah / 7 mm, 100 Ah / 8 mm) without the cost of developing an injection mold of a separate connection cartridge Assembly is possible
In addition, in preparation for the temperature rise due to high rate charging and discharging, a separate refrigerant flow path is separated at the pole connection part separately from both sides of the battery cell to provide safety and reliability against fire and explosion of the lithium ion battery. The battery monitoring system and the Balancing Module Unit are installed inside the battery module, and the voltage and temperature measurement values of the multiple battery cells constituting the unit module are connected to the communication network between the battery modules.
Provides optimum efficiency, economy and reliability for the parallel connection of multiple battery cells that make up a battery module

Description

Efficient battery cell series & parallel connection system and battery module assembling}

The present invention relates to a direct parallel connection method of a plurality of battery cells constituting a large secondary battery module used in an electric vehicle or an energy storage device, and a method of assembling a battery module using the same.

This connection method requires the convenience of mechanically interconnecting the battery cells constituting the battery module due to repeated charging and discharging so that the aging of each battery cell progresses and the selective exchange of defective cells is easy according to the degree of aging.

In addition, the battery system can be easily connected to the battery pack and the battery system, which can easily vary the number of battery cells constituting the battery module by using the connection cartridge of the insulator so that battery packs of various sizes can be effectively disposed in a limited space. The present invention relates to a connection structure of a battery cell capable of preventing a fire and an explosion expected due to an increase in temperature of the battery cell and thermal runaway of the pole connection part during high rate discharge due to charging.

Recently, due to the depletion of fossil fuels and the regulation of CO2 emissions, the demand for secondary lithium ion batteries that can be repeatedly charged and discharged as a power source for electric vehicles and smart grid energy storage devices is exploding. In particular, golf car hybrid cars (HEV), near-field electric vehicles (NEV), pure electric vehicles (EVs), lithium-ion batteries and lithium polymer packs used as power sources for electric storage (e-bus) and energy storage devices are becoming larger.

The battery pack used as a high-power large-capacity power source generally comprises a unit battery module by connecting a plurality of battery cells (unit cells) in series or in parallel, and a battery required by a power source by directly connecting unit battery modules in parallel. The rated voltage of the pack can be configured.

In detail, a plurality of battery cells constituting the battery module are connected by soldering adjacent poles using a PCB circuit board, and connecting adjacent cell poles with bolt nuts using a conductor and insulated by using compression tubes. To connect the poles of the battery cell to the screw rods spaced at both ends of the conductive interconnect and the pair of V-shaped clamps, and to ultrasonically weld electrodes adjacent to the interconnect member of the conductor. Although the connection method of many battery cells has been improved and developed, such a method increases the connection resistance between poles using conductive interconnects, or soldering connection method or high frequency welding connection method to the interconnect member of a conductor. There is a disadvantage that the selective exchange of defective cells is difficult

Moreover, the rapid acceleration stop and rapid charging of electric vehicles are exposed to the risk of fire and explosion due to the temperature increase of the battery cell and the thermal runaway of the pole pole connection.

In addition, the number of connection of the battery cells constituting the unit battery module can be changed at a low cost in order to directly connect a plurality of battery modules in parallel to the limited width, height, and length of the loading space of the electric vehicle and the energy storage device as desired. Therefore, there is a need for a connection system of battery cells that can be compactly and efficiently placed in a loading space.

This interconnection system is corroded by various forms of pollution, aging of unit battery cells due to repeated charging and discharging, temperature increase of battery cells due to high rate charging and discharging during rapid acceleration and rapid charging of electric vehicles, and heat of the pole connection. It is desirable to develop an interconnection system of battery cells with electrical durability, reliability, safety, simplicity and efficiency in the operating environment of various power sources such as congestion and sub-zero operating conditions in winter.

The present invention provides an efficient and easy interconnection of a plurality of battery cells to efficiently solve the variable size of the battery module, the limited layout of the battery pack so that it can be applied to the rated voltage and rated capacity corresponding to the power source of various applications To provide a connection method.

In addition, various types of contamination, operating environment, and repeated charging and discharging provide convenience for selective replacement of defective cells according to the aging degree of a unit battery cell.

In particular, when the number of connected battery cells of a unit battery module changes with respect to the width, height, and length of a limited loading space of an electric vehicle, an injection mold member having a different width of the battery module must be added. Therefore, there is a need for an interconnection system that can directly and parallelly connect a plurality of battery cells to a desired number of cells.

In addition, there is a need for a battery module capable of securing a separate cooling flow path to have stability against thermal runaway of the pole column connection during high rate charging and discharging of a battery cell due to rapid acceleration, deceleration, and rapid charging of an electric vehicle.

It is desirable to develop an interconnection system of multiple battery cells having electrical durability, reliability, safety and simplicity of connection in battery packs of various sizes and operating environments.

Exemplary embodiments of battery module assembly of the present invention provide a solution to the interconnection system of multiple battery cells.

Such an interconnection system designs a space having the same shape as a unit battery cell on one side of a cell connection cartridge in which a plurality of unit battery cells constituting the battery module are insulators having the same structure, and the protrusion on the other side is sealed on the battery cell. Is a system in which as many battery cells are interconnected as the desired number of connecting cells by repeatedly using a connection cartridge having the same structure.

The interconnect system uses a nut or bolt by inserting two poles adjacent between a conductive connector having a plurality of bolt nut structures at the top or left and right grooves of the connection cartridge and a conductive connector having holes matching the position of the bolt nut. It is possible to selectively exchange defective cells by connecting them, and to insulate between adjacent poles to prevent accidental arcing and discharge due to electrode contact. Conductive connector with nut structure can be replaced by inserting pan nut during injection of connecting member

It also includes a conductive connector in which a plurality of holes coincident with the holes of the battery cells are arranged in parallel by the desired number of parallel connection cells so as to enable parallel connection of as many adjacent number of adjacent battery cells.

The cell connection cartridge is connected without distortion because a number of square or round holes are engaged in a male and female shape, and a square bar and a circular bolt having a nut structure in a square or circular groove are bolted to a side frame panel of both ends of the battery module. Ensure a stable bond.

When the number of connections of the multiple battery cells constituting the battery module is changed, the width of the battery module is also changed to fix the cover that insulates the positive and negative terminal parts of the separate battery module and the connector to which voltage and temperature measurement wiring of each battery cell is connected. Since the length of the insulator cover must be changed, a separate injection mold cost is required according to the number of cells of the connected battery. Thus, the V-shaped or contour is formed on the surface of the cover to cut the cover to the width of the battery module to connect the connected battery. Even if the number of cells changes, it can be used without additional cover injection cost.

Connecting cartridges of the same size but with different thicknesses of battery cells with different thicknesses can be connected using the same structure of connection cartridges. It is possible to assemble three types of battery modules 60Ah, 80Ah, 100Ah by connecting battery cells with different capacity (e.g. 60, 80, 100Ah), and to ensure the refrigerant flow path as much as the thickness of the insulator coupled to the support and the support.

Both terminal positive and negative terminal terminals of the battery module form a multi-layered semi-circular groove so that the terminal terminal having a tab structure on the top or side of the cell connection cartridge can be fixed by one touch and adjacent connection cartridges When combined, a circular hole is formed to be coupled to the terminal of the cylinder, and the lower portion of the cylindrical terminal is coupled to the circular hole of the plate-shaped terminal bar to be connected with the pole or the bolt or nut of the positive or negative pole of the final terminal cell.

The wiring for measuring voltage and temperature of a plurality of battery cells is connected to the upper part of the conductive connector connected to the pole of each cell in the form of a connector or each circuit of the PCB including the voltage structure and the temperature sensing circuit including the nut structure on the conductive connector. Configure the parts to be bolted directly.

The plurality of wires for voltage and temperature measurement connected to the poles of a plurality of battery cells have a duct structure that is a passage for wiring on the top or side of the connection cartridge and includes fixing protrusions on both sides of the upper side of the duct so that the connection wires do not easily come out. Let's do it. Many of the measurement wirings mentioned above can be replaced by a PCB circuit board.

The temperature rise of the battery cell, which is expected to rise due to high rate charge and discharge, includes holes for mounting temperature sensors in the cell connection cartridge pole connection so that the temperature sensor can be mounted at the desired area such as the side of the cell and the pole connection. Optional attachment to the desired number of cells

Arrange a plurality of insulating support bars of a certain thickness on the side of the cell connection cartridge so as to secure refrigerant paths on both sides of the battery cells expected to rise in temperature, and have cooling passages on the pole connection separately from both sides of the cell of the battery module. Have a separate duct structure on the upper frame cover of the battery module

Ensure that the battery module has a number of circular or square groove structures on the bottom of the cell cartridge to mount a dustproof device that can withstand external vibrations.

As described in the embodiment of the present invention, the battery module may be configured to meet the rated voltage rating capacity required by various power sources of the electric vehicle and the energy storage device and to be disposed under optimal conditions in a limited space of the battery pack. Provides convenience for variable design of battery cells

In addition, battery cells with the same surface area and different thicknesses (eg 60, 80, 100 Ah) of rectangular (pouch) or polygonal lithium battery cells can be used with insulator space bars of different thicknesses without the cost of developing an injection mold for a separate cell connection cartridge. It provides the economical efficiency to configure the module and has the advantage of selectively exchanging the defective cells according to the aging degree of the cell by repeated charging and discharging.

The battery cell interconnection system of the present invention is an electric golf car hybrid vehicle (HEV), a near field electric vehicle (NEV), and a pure electric vehicle (EV), which have recently exploded in demand due to exhaustion of fossil fuels and CO2 regulation. It can be applied to the production of both medium-large lithium ion batteries and lithium polymer batteries used as power sources for electric buses and energy storage devices, making it easy to manufacture medium and large battery packs with various outputs and capacities required by power sources. Provide practical examples and possibilities of industrial use that can be done

1 shows a plurality of battery cells connected to adjacent battery cells by a connection cartridge.
Shows the structure
Figure 2 The rear structure of the cell connection cartridge and the position of the interlocking members
Shows the structure
Figure 3 shows the front projection of the cell connection cartridge and the
Drawing
Figure 4 Pole and terminal of multiple cells using cell connection cartridge and members
Presented as an embodiment of the present invention showing the connection structure of the terminal
Structure of battery module
5 shows the positive electrode terminal terminal insulating cover structure in the battery module of the embodiment
Connector cover structure and insulation and connection structure for voltage temperature measurement wiring
Fig. 6 shows the coolant flow paths of the pole column connecting portions separated from the coolant flow paths on both sides of the battery cell.
Including upper frame panel duct structure and upper frame cover
Figure 7. Structure and name of the completed battery module of the embodiment
8 Example: A battery pack in which eight battery modules are connected in series

The detailed description of the present invention will become more apparent from the detailed description of the presently-presented exemplary embodiments. However, the scope of the present invention is not limited thereto.

The drawings accompanying the detailed description are as described below.

The present invention assembles a battery module by directly connecting a plurality of battery cells (eg, 6-22 cells) that can be changed so that the battery pack can be efficiently mounted in a limited space (vehicle width, length, height), and assembled the assembled battery module. Provides battery pack system of medium and large power source of desired rated voltage and rated capacity by connecting in parallel

1 illustrates an embodiment of a system in which a plurality of battery cells 17-1, 17-2, --- are interconnected using cell connection cartridges 13-1, 13-2, --- of the same structure. Explain.

The battery cell interconnection system of FIG. 1 includes a frame side panel 11 having a metal structure at both ends of the battery module, and a side insulation panel insulating the side panels and the positive and negative terminals (terminals) of the battery module. 12) Cell connection cartridges 13-1,2-- connected to the battery cells, pole insulation bars 14 for insulating two adjacent poles, and lower pole connection bars which are conductive connectors having a plurality of bolts or nuts. 15) A plurality of battery cells (17-1, 17-2 ---) and cell connection cartridges connected to the upper voltage sensing bar (16), which is a conductive connection with holes coincident with the bolt or nut holes of the pole connecting bar. 13-1,13-2, ---) Round long bolts (19) fitted into square holes in the top and bottom centers of the square nut bar (18) that fit into the square holes of the four corners of the module. How these interconnections are shown. Being the side panel 11 and is bonded firmly with the side insulation panel 12 and a square nut bar 18 and a circular long bolt (19).

Although the number of battery cells connected in this connection system is different, the combination is preferably named a battery module.

The lower pole connecting bar 15 and the upper voltage sensing bar 16 are bent at right angles and are crimped and fixed with bolt nuts with the poles of adjacent battery cells in the middle so that they have high conductivity with aluminum alloys, pure copper and alloys. It is desirable to be made of sieve material. This method uses a pair of V-shaped terminal clamps with a pair of spaced apart screw rods at the end of a separate conductive interconnection to clamp adjacent poles at the ends of separate conductive interconnects (Patent Application No. 10-2008). Compared with -0073269), since the pole and pole are directly contacted, the connection resistance of the conductive interconnect itself can be reduced and the connection structure is simple.

In addition, compared to the method of ultrasonically welding the poles of the battery cells adjacent to the sides of the plurality of electrical interconnect members (Patent Application No. 10-2008-10079167) has the advantage that the selective replacement of the defective battery cells is easy.

Battery cell connection cartridges (13-1, 13-2,-), pole insulation bars (14) Side insulation panels (12) are injection molded from a variety of electrically insulating engineering plastic materials, which are adjacent battery cells that are not interconnected. Prevent arcing, short circuit, short circuit, discharge, and contact that may occur between

The height of the lower pole connecting bar 15 is equal to the height of the connecting hole in the upper or left and right sides of the cell connecting cartridge fitted with one touch, and the width and length can be changed according to the thickness of the connecting battery cell and the length of the pole width of the battery cell. .

The connecting bolt or nut is made of stainless steel or copper alloy and has a hexagonal, + -shaped head structure and includes a lock washer flat washer. The diameter and pitch of the bolt allow sufficient torque adjustment so that the connecting pole can be connected with minimum electrical contact resistance. Tighten to a uniform torque with a tool

Since the upper voltage sensing bar 16 is connected on two poles bent at right angles, it is preferable to be made of highly conductive pure copper and copper alloy material. It has a connector or press-fitted pan nut structure at the end to be connected to the wiring.

The poles of the interconnected batteries may be perforated to match the bolt holes of the pole connecting bar 15 and the voltage sensing bar 16, and may be bent before assembly or after assembly.

The battery cells used in the embodiment of FIG. 1 are about 460 mm long, about 330 mm wide and 70 mm thick, with a lithium polyimide secondary battery 80 Ah. The cell electrodes are 0.2 mm thick and 100 mm wide with negative and positive electrodes. It has a symmetrical structure. The anode consists of anodized aluminum and the cathode consists of nickel-plated copper. The poles of the connection system of Figure 1 are arranged in the arrangement shown on the same axis of symmetrical structure in each of the adjacent battery cells. They are interconnected with other poles (in series connection) or with the same poles (in parallel connection) and are finally connected to the terminal terminals of the cylindrical positive and negative poles at each termination. The negative electrode and the positive electrode may be symmetrical to the upper surface of the battery cell or may be positioned on the left and right sides of the battery cell.

The cell connection cartridge rear surface 20 of FIG. 2 is a symmetrical pole connecting portion 21, a pole fixing portion 22, three cell side supports 23, an insulating space bar 24 fitted into a hole of a support bar, and four battery cells. It is composed of a four-sided wedge portion 29 of the inner vibration absorbing portion 28 at the lower side of the sealed surface edge portion 25 and the duct portion 26 at the left and right centers.

In the embodiment, the upper pole connection portion 21 includes a c-shaped groove that can fix the lower pole connection bar 15 with one touch so that poles (eg, thickness of 0.2 mm and width of 100 mm) of adjacent battery cells are connected.

The pole pole fixing part 22 has a pole hole (0.2 mm) and a pole pole rivet or high frequency welding part (0.6-0.8 mm) of a battery cell having a different thickness and a temperature sensor are tightly fixed in a rectangular rim hole having a thickness different from that of the pole pole. .

In the embodiment, the cell connection cartridge has the same surface area and thickness (8mm) as the battery cell so that the 80Ah battery cell having a length of 460 mm and a width of 330 mm and a thickness of 7 mm is fixed, and the battery cell side is fixed on the three support bars 23. do

The three support grooves are bonded to the space bars 24 having different thicknesses (2 mm and 3 mm), so that the battery cells having the same surface area but different capacities of 8 mm (100 Ah) and 7 mm (80 Ah) of different capacity are one type of cell connection cartridge. The battery module can be configured by using. In case of 80Ah battery cell, it secures a cooling channel with a thickness of 5mm where the support bar (3mm) and the insulation space bar (2mm) are combined. In the case of 100Ah battery cell, the support bar (3mm) insulation space bar ( A cooling channel having a thickness of 4 mm combined with 1 mm) is secured to both sides of the battery cell.

On the four sides contacting the sealed part of the rear battery cell of the cell cartridge, a groove is formed to have a depth of battery cell 1./2 thickness 4mm, and the sealed part is tightly fixed by the left and right upper and lower protrusions 32 on the front of FIG. This is fixed firmly.

4 edges of the battery cell sealed side The rear wedge portion 25 is not uniform in thickness, so that the grooves of different thicknesses are formed in a triangular or polygonal structure so that the battery cells are not damaged due to tight coupling with the protrusions so that the electrolyte does not leak. Allow battery cells to bind more stably.

Four corners of the cell connection cartridge are fitted with a square hole 29 into which a square nut bar 18 to which adjacent cartridges are coupled is fitted, and a circular hole 29-1 into which a circular long bolt 19 is fitted at an upper and lower middle thereof. ) Is interconnected by a male and female coupling structure on the rear front surface of the cell cartridge and is coupled with a pair of side frame panels 11 and side insulation panels 12 in a bolt nut structure to stably and firmly defect a plurality of battery cells.

The battery module includes a plurality of circular or square grooves 28 structures at the bottom of the cell cartridge to mount a dustproof device that can withstand external vibrations.

Figure 3 is the front of the cell connection cartridge is a rectangular protrusion 34 of the protruding structure circular column 35 is coupled in the form of male and female holes in the rear. In the upper center portion of the cartridge, a temperature sensor fixing portion 31 in up, down, and right directions is provided.

It can be equipped with a temperature sensor on the side of the battery cell where the temperature rise is expected due to high rate charging and discharging, and the connection part of the pole can be selectively mounted on the battery cell of the desired connection number.

The battery wedge sealed four corner front wedge portion 33 has the same structure as the back wedge portion 25 so that the sealed surface of the battery cell is damaged and the electrolyte is not leaked.

4 shows the structure 40 of a battery module assembled with N number of battery cells and N + 1 cell connection cartridges and a cylindrical positive terminal terminal 41 having a nut structure which is finally connected to the pole of the terminal battery cell. ) Since the negative terminal terminal 42 is connected to another adjacent module by a power cable, it is preferable to be made of copper alloy or pure copper material having excellent conductivity. Designed to minimize connection electrical resistance by connecting directly between the poles of the cell without interconnects

In addition, to prevent thermal runaway during high-rate charging and discharging of a battery cell, the plate-shaped terminal bar preferably has a structure that does not bend at a right angle when combined with the pole of the battery cell.

The terminal terminal of the positive electrode is output of the number N x rated voltage and the rated capacity of the battery cell in series connection of the battery module is connected in parallel with other battery modules to form a battery pack of the desired power source.

A plurality of circular holes 45 are formed on the upper surface of the battery module when the plurality of connection cartridges are adjacent to each other and have a plurality of semicircular grooves of symmetrical and multilayer structures on the upper side or the side of the cell connection cartridge. Is combined with one touch

In the upper part of the battery module, a plurality of measurement wires connected to the voltage sensing bars 16 of each cell are embedded in the side duct 46 and the central duct 47 so as to measure the voltage and temperature of each battery cell, and the measurement wiring in the center of the upper duct. It includes a protrusion for fixing the

The voltage sensing bar 16 connected to the upper portion of the plurality of battery cells includes a connector for connecting the measurement wires, and the plurality of measurement wires connected to the connector are connected to the sensing connecter 43 of the battery module or the voltage temperature measurement. The contact portion of each circuit of the board of the circuit on which the circuit is configured is bolted to the nut structure of the voltage sensing bar 16 and the PCB circuit is again connected to the connector sensing connecter 43.

If the battery module includes a BMS and a balancing circuit (battery monitoring system, cell balancing module), the voltage temperature sensing connector 43 is connected to the communication circuit for voltage temperature measurements between the modules and adds a separate power supply connector 44. can do.

5 shows that the terminal terminal cover 51 and the sensing connector cover 53 of the positive and negative electrodes of the battery module are insulated from the frame panel of adjacent electrodes or conductors, and the number of connection of a plurality of battery cells (6-22 cells). The length of the width of the battery module is also changed according to), and it is cut to fit the width length of the battery module including V-shaped or cutting contours 52 and 54 on the surface of the pole cover without any injection mold cost. It is coupled to the side frame panel with bolts through the connection grooves 55 and 56.

A central part of the side frame panel includes a nut 57 for connecting the BMS or the balancing circuit board.

6 shows that a plurality of wires for measuring voltage and temperature of each battery cell are not connected to an external BMS or a balancing circuit, but to a BMS and a balancing circuit board 63 mounted inside the battery module so that the voltage and temperature measurement values are transferred to the inter-module communication network. An exemplary embodiment of a battery module having the advantage of being connected is provided.

The battery module is connected to the pole connection portion of the battery cell in which thermal runaway is expected, separately from the cooling passages 61 on both sides of the battery cells, which are expected to rise in temperature due to high rate charging and discharging of the battery cell during rapid acceleration and deceleration of the electric vehicle. A separate duct structure 62 is included in the upper frame panel 65 of the module to secure the refrigerant passage.

In addition, the upper frame panel 65 of the battery module adds a separate upper frame cover 64 to maintain the BMS or the balancing circuit board 63.

7 illustrates an example of a completed battery module, including an upper frame panel 71, a side frame panel 72, a terminal cover 73, a negative terminal terminal 74, a connector cover 75 for voltage temperature measurement wiring, and a frame panel cover 76. Shows

8 shows an example of a battery pack, which is a power source in which eight battery modules are connected in series, including a battery module 81, power cables 82 and 83 connected to terminal terminals of a battery module, and a cooling fan 84 of a battery module. An embodiment of the battery pack including a refrigerant inlet duct 85 and a refrigerant exhaust duct 86 designed to disperse refrigerant in the connection part and the side of the battery module is shown.

11: frame side panel
12: side insulation panel
13-1,13-2: Battery Cell Connection Cartridge
14 pole insulation bars, multiple
15: Lower pole connection bar
16: upper voltage sensing bar
17-1,17-2: unit battery cell
18: square nut bar
19: round long bolt
21: Pole connection
22: pole fixing part
23: Cell side support
24: insulated space bar
25: rear edge wedge
26: wiring duct
27: rotunda
28: vibration absorption unit
29: square hole
31: temperature sensor fixture
32: front left and right upper and lower protrusions
33: Front edge wedge
34: Front square hole protrusion
35: front cylindrical protrusion
41: positive terminal
42: negative terminal terminal
43: voltage sensing coneta
44: power supply connector
45: round hole for fixing terminal terminals
46: Side wiring duct
47: central wiring duct
51: terminal terminal cover
52,54: cover cutting contour
53 sensing connector cover
55: terminal cover connection hole
56 Connector cover connection hole
57: Nuts for connecting circuit boards
61. Cooling passage on the side
62 Pole connection coolant duct
63: BMS and balancing circuit board
64: upper frame cover
65: upper frame panel (

Claims (16)

A plurality of battery cells form a space having the same shape as a unit battery cell on one side of a cell connection cartridge of an insulator of the same structure, and the sealed side wing of the battery cell is closely and repeatedly connected to the protrusion of the other side of the cell connection cartridge. Characteristic interconnection system of secondary battery cells
The material of the cell connection cartridge is a flame retardant ABS resin or a special plastic material with excellent insulation and flame retardancy.     The cell connection cartridge of claim 1 has grooves on the upper or left and right sides to insert one-touch conductive inserts having a plurality of bolt nut structures or to insert a plurality of insert nuts.     Interconnected poles include a plurality of connecting holes and are bent at right angles in the interconnection direction, sandwiched between a conductive connection having multiple bolt or nut structures and another conductive connection having holes of the same size at the bolt nut position. Or battery cell interconnection systems connected using bolts The cost of developing a cell connecting cartridge mold of different sizes by including a plurality of supports having a constant thickness on the side of the battery cell cartridge and interconnecting the insulating space bars of different thicknesses in the grooves of the support to interconnect battery cells having the same area but different thickness. Battery cell interconnect system capable of interconnecting different capacity battery cells, such as 60 Ah (6 mm), 80 Ah (7 mm), 100, Ah (8 mm) Conductive connectors having the same holes in the positions of multiple bolts, nuts, bolts, nuts in grooves on the top or side of one kind of cell connection cartridge without a separate auxiliary cartridge, insulated bars between adjacent poles parallel to the pole direction The battery module requires a conductive connector capable of paralleling battery cells, including a large number of circular hole rows, and the rated voltage (battery cell nominal voltage XN series connection cell number) and the rated capacity (unit cell cell nominal capacity XP parallel connection cell number). Interconnection systems and battery modules that connect battery cells in combination to match   Cell connection Interconnect system comprising a plurality of square or circular holes in the four corners and the middle of the rear of the cartridge, and adjacent cartridge front protrusions of the same structure are formed in the shape of male and female inside a plurality of square or circular grooves in the rear. The cartridge is an interconnection system having a feature that a plurality of battery cells are stably coupled by fitting a square bar having a nut structure in a plurality of rectangular holes and a circular bolt inserted in a circular groove so as to be fixed to the frame panels on both sides of the battery module without distortion. Battery module It includes a multi-layered semicircular groove to fix a cylindrical cathode anode terminal terminal having a tab structure on the upper or left and right sides of the cell connection cartridge. When combined with an adjacent connection cartridge, a circular hole is formed. Interconnection system and battery module of battery cells coupled with one-touch and bolted to the poles of the positive and negative poles of the final terminal Even if the number of connections of the multiple battery cells is variable, a V-shaped or contour is formed on the cover that insulates the positive and negative terminal parts of the battery module and the cover that fixes and insulates the connector to which voltage and temperature measurement wiring of each battery cell is connected. Interconnect system that can be used to cut the cover to the same size as the width of the battery module to fit the number of connections of multiple battery cells without the cost of injection mold Includes a connector that connects cell voltage and cell temperature measurement wires to an upper conductive connector having a plurality of holes connected to poles of battery cells bent at right angles to measure voltage and temperature of a plurality of battery cells and bolts or nuts. Interconnection system having a structure in which the measurement circuit contacts of the PCB board, in which the voltage and temperature measurement circuits are configured, are connected by a harness structure or a nut structure in the conductive connector itself.
 The wiring for voltage temperature measurement connected to a plurality of battery cells has a duct structure that is a passage for a plurality of wirings on the top or side of the connection cartridge, and includes a protrusion for fixing wires on both sides of the top of the duct so that the connection wiring does not easily come out. Interconnection system In order to mount the temperature sensor to the desired part such as the side of the battery cell and the pole connection where temperature is expected to be increased, the temperature sensor may be mechanically mounted on the front or rear of the cell connection cartridge or in a circular lug. Interconnection system that is connected by bolt nut structure to conductive connector that is coupled to connect pole of each battery cell     Battery cell interconnection system and battery module having a separate duct structure on the upper frame cover of the battery module so that the refrigerant flow path is secured at the upper pole connection portion where rapid temperature rise is expected at high rate charge and discharge separately from the refrigerant flow paths on both sides of the battery cells. The edge of the sealed surface of the battery cell to be welded at high frequency has a non-uniform thickness of the sealed surface.Therefore, the sealed surface of the battery cell may damage the connecting cartridge of the insulator and leak the electrolyte when mutually bonding. Battery cell interconnect system that includes triangular or polygonal grooves of sufficient thickness at the front and rear of the cell connection cartridge
The voltage and temperature measurement wiring connected to the plurality of battery cells has a duct structure that allows passage of a plurality of wirings on the top or side of the connection cartridge and includes a protrusion for fixing the wires on both sides of the upper side of the duct so that the connection wiring does not easily come out. Interconnection system The terminal terminal connected to the poles of both ends of the battery module is made of copper alloy or pure copper material with excellent cylindrical nut structure. It is combined with the plate-shaped connector and inserted into the cylindrical hole at the top or side of the battery module with one touch. Battery cell interconnection systems and battery modules having the characteristics of being connected or having a plate-shaped connector which is not bent into a right angle structure to prevent thermal runaway    Interconnection system and battery module with a plurality of circular or polygonal grooves at the bottom of the battery module or connection cartridge that can be mounted with a dustproof device to withstand battery cells from external vibrations The bolt or nut structure that can fix the BMS or balancing circuit on the top of the battery module is coupled to the top of the side plate or the module to include the BMS or balancing circuit inside the battery module or to fix the top of the battery module for maintenance. The interconnection system and the battery module having the feature of connecting the upper frame cover to the bolt nut structure separately from the upper frame panel to open the upper frame cover without disassembling the battery module from the battery pack, thereby maintaining the BMS or balancing circuit.

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