KR101672191B1 - Cartridge for Battery - Google Patents

Abstract

A battery cartridge according to an embodiment of the present invention includes a unit battery module formed of a plurality of unit cells for generating a current, a plurality of terminal portions provided in the unit battery module, a terminal accommodating the unit battery module, A connector for voltage detection which is provided in the cartridge center and brought into contact with the respective terminal portions so as to receive a current of the unit battery module; and a plurality of nut plates .

Description

[0002] Cartridge for Battery [

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a battery cartridge, and more particularly, to a battery cartridge having improved coupling and structure of a voltage detecting connector.

One of the biggest problems with vehicles using fossil fuels such as gasoline and diesel is that it causes air pollution. As a solution to this problem, a technique of using a power source of a vehicle as a secondary battery capable of charging and discharging has attracted attention. Accordingly, an electric vehicle (EV) that can be operated only by a battery, and a hybrid electric vehicle (HEV) that uses a battery and an existing engine have been developed, and some of them have been commercialized. BACKGROUND ART [0002] Nickel metal hydride (Ni-MH) batteries are mainly used as secondary batteries as power sources for EV, HEV and the like, but recently lithium-ion batteries have also been used.

Large-capacity battery packs having a structure in which a large number of small secondary cells (unit cells) are connected in series and / or in parallel are used in order to be used as a power source for EV, HEV and the like.

A prismatic battery or a pouch-shaped battery is used as a unit battery, which is a component of such a middle- or large-sized battery pack, and can reduce the size of a dead space by being filled with a high density. In order to facilitate the mechanical fastening and electrical connection of such unit cells, a battery cartridge is generally used which is capable of mounting one or more unit cells. That is, a plurality of battery cartridges mounting unit cells are stacked to constitute a battery pack.

Such a battery cartridge is required to protect, insulate, and dissipate internal unit cells, and it is demanded that the battery cartridges are stacked and configured.

The battery cartridge measures the voltage of the unit cells inside and delivers the measured voltage to the battery management system (BMS). In this case, in the conventional battery cartridge, the voltage detecting connector for measuring the voltage of the unit cells inside the unit is fastened to the unit cells in a manner such that the unit cells are fastened together. In the case of the tight fitting method, there is a problem that the dimensional tolerance becomes loose. In addition, when vibrations are generated in accordance with the running of the vehicle, the loosened dimensional tolerance results in poor coupling, and thus the voltage detecting connector can not detect the voltage of the unit cell.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a battery cartridge in which the connector and the structure of the voltage detecting connector are improved.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a battery cartridge comprising:

A unit battery module formed of a plurality of unit cells for generating current; A plurality of terminal portions provided in the unit cell module; A cartridge center in which the unit battery module is accommodated and in which a plurality of terminal mounting portions to which the plurality of terminal portions are coupled are formed; A voltage detecting connector provided in the cartridge center, the voltage detecting connector being in contact with each of the terminal portions and receiving a current of the unit battery module; And a plurality of nut plates fastened to the terminal mounting portion and contacting the voltage detecting connector; .

The details of other embodiments are included in the detailed description and drawings.

According to the battery cartridge of the present invention, one or more of the following effects can be obtained.

First, since the connector for voltage detection is provided in the cartridge center, the number of working hours for assembling the battery cartridge is saved, and the number of workings due to complicated lead wires can be saved at the time of repair or replacement after a failure occurs.

Second, since the conductor is fastened to the fastening portion formed at the center of the catheter, the unit cell module and the conductor are interfered with each other, so that heat generated in the unit cell module can be prevented from damaging the conductor.

Third, since the connector for voltage detection is provided with a pin connector so that the coupling with the detection line is removable and rigid, the problem that the dimensional tolerance due to the forced fit method is loosened is eliminated, The detection line can be reused.

Fourth, since the fixing of the terminal portion and the terminal portion is secured by the fastening means, when the current is transmitted from the unit cell module to the voltage detecting connector, the problem that the current can not be properly transmitted due to the dimensional tolerance is solved, The problem that the dimensional tolerance further worsens due to the occurrence of vibration due to operation is eliminated.

Fifth, since only one voltage detecting connector is used for each battery cartridge, the number of parts is reduced.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is an exploded perspective view of a battery cartridge according to an embodiment of the present invention.
2 to 5 are views showing a unit cell of a battery cartridge according to an embodiment of the present invention.
6 is an exploded perspective view of a battery cartridge according to an embodiment of the present invention.
7 is a view showing a portion of the battery cartridge shown in FIG. 6 being coupled.
Fig. 8 is a view showing a part of the battery cartridge shown in Fig. 7 combined with the rest of the components.
9A and 9B are cross-sectional views of portions A and B shown in Fig.
FIG. 10 is a side view of a battery cartridge according to an embodiment of the present invention, and FIG. 11 is a view showing another side.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings for explaining a battery cartridge according to embodiments of the present invention.

1 is an exploded perspective view of a battery cartridge according to an embodiment of the present invention.

A battery cartridge according to an embodiment of the present invention includes a unit battery module 110, an upper cartridge inner 131-1, a lower cartridge inner 131-2, a cartridge center 121, an upper cover 141-1, And a lower cover 141-2.

The unit cell module 110 is a bundle including a plurality of unit cells. The unit cell generates a current as a nickel metal hydride (Ni-MH) battery or a lithium ion (Li-ion) battery. The unit cell module 110 is provided in the cartridge center 121. The upper surface of the unit battery module 110 is in close contact with the edge of the upper cartridge inner 131-1 and the upper cover 141-1 is in close contact with the center portion. The lower cartridge inner 131-2 is in close contact with the edge and the lower cover 141-2 is in close contact with the center of the unit battery module 110. [

The upper cover 141-1 contacts the upper surface of the unit battery module 110 to discharge the heat of the unit battery module 110. [ The upper cover 141-1 is preferably made of an aluminum material having excellent heat dissipation. An upper cartridge inner 131-1 is provided between the upper cover 141-1 and the unit battery module 110. [

The upper cartridge inner 131-1 is in contact with the upper surface edge of the unit battery module 110. [ The upper cartridge inner 131-1 is insulated such that the upper edge of the unit cell module 110 does not directly contact the upper cover 141-1. The upper cartridge inner 131-1 supports between the upper edge of the unit battery module 110 and the upper cover 141-1 to protect the upper edge of the unit battery module 110. [

The description of the lower cover 141-2 and the lower cartridge inner 131-2 is the same as described above and will be omitted.

The convex portion 141a and the concave portion 141b are formed in the upper cover 141-1 and the lower cover 141-2. The convex portion 141a and the concave portion 141b are engaged with each other when the battery cartridges are stacked. The convex portion 141a and the concave portion 141b are formed symmetrically with respect to the four corners of the upper surface of the upper cover 141-1 so that not only forward stacking in which the battery cartridges are stacked in the same direction but also reverse stacking in which stacking is reversed .

The cartridge center 121 has a unit battery module 110. An upper cover 141-1 is coupled to an upper side of the cartridge center 121 via an upper cartridge inner 131-1. A lower cover 141-2 is coupled to the lower side of the cartridge center 121 via a lower cartridge inner 131-2. Various combinations of bonding, bolting and welding may be used for each bonding.

The cartridge center 121 supports the upper cartridge inner 131-1 and the upper cover 141-1, the lower cartridge inner 131-2 and the lower cover 141-2, A spacer 124 through which the long bolt is passed is provided.

The cartridge support 125 is inserted into the side hole 121b formed in the cartridge center 121. [ The cartridge support 125 supports and protects the edges of the unit battery module 110.

A cover front 123 is coupled to the front of the cartridge center 121 and a cover 122 is coupled to the rear of the cartridge center 121 to protect terminal portions (not shown) of the unit battery module 110.

2 to 5 are views showing a unit battery module 110 of a battery cartridge according to an embodiment of the present invention.

The unit cell module 110 is preferably composed of four unit cells including the first unit cell 110-1 to the fourth unit cell 110-4. However, it can be changed to various numbers depending on the type of the unit cell.

The first unit cell 110-1 and the second unit cell 110-2 are tightly coupled and the third unit cell 110-3 and the fourth unit cell 110-4 are tightly coupled. A gap is formed between the second unit cell 110-2 and the third unit cell 110-3. The gap between the second unit cell 110-2 and the third unit cell 110-3 is formed by the cartridge center 121. [ There is a gap between the second unit cell 110-2 and the third unit cell 110-3 to prepare for inflation during charging and discharging of the unit cell. A thermal sensor may be inserted into the gap between the second unit cell 110-2 and the third unit cell 110-3.

The first unit cell sealing portion 110-1a is a portion for sealing the edge of the first unit cell 110-1 and can be energized by leakage if it is torn or broken. Accordingly, the first unit cell sealing portion 110-1a is in close contact with the upper cartridge inner 131-1 in order to insulate and protect the first unit battery sealing portion 110-1a.

A cartridge support 125 is inserted between the first unit cell sealing portion 110-1a and the second unit battery sealing portion 110-2a to support, protect and insulate the respective sealing portions. Particularly, when the battery cartridge is vertically erected, the cartridge support 125 can prevent the first unit cell sealing portion 110-1a and the second unit battery sealing portion 110-2a from being deflected by their own weight, 1) to prevent electric current from leakage due to breakage such as partial tearing or breakage due to vibration of the vehicle.

The unit cell module 110 is provided with a positive electrode terminal 117, a negative electrode terminal 119, a negative parallel electrode 113, a positive electrode 114 and a series electrode 115.

The double row electrode terminal 117 connects the first unit cell 110-1 and the second unit cell 110-2 in parallel to form the anode of the unit cell module 110. [ The double row electrode terminal 117 is disposed on one side of the unit battery module 110. The negative parallel electrode terminal 119 connects the third unit cell 110-3 and the fourth unit cell 110-4 in parallel to form a negative electrode of the unit cell module 110. [ The negative parallel electrode terminal 119 is disposed in parallel with the positive electrode terminal 117 on one side of the unit cell module 110.

The negative parallel electrode 113 connects the first unit cell 110-1 and the second unit cell 110-2 in parallel and the positive electrode 114 connects the third unit cell 110-3 and the fourth unit cell 110-3, The unit cells 110-4 are connected in parallel and the series electrode 115 connects the negative parallel electrode 113 and the positive electrode 114 together.

The first unit cell 110-1 and the second unit cell 110-2 are connected in parallel and the third unit cell 110-3 and the fourth unit cell 110-4 are connected in parallel. The sets are connected in series again. The unit battery modules 110 are connected in a 2-parallel-2 serial structure. However, the connection structure can be changed according to the required voltage and capacity. The double row electrode terminal 117, the negative parallel electrode terminal 119 and the series electrode 115 function as electrode terminals for connecting a plurality of unit cells in at least one of series and parallel, 150c.

A plurality of terminal units 150a to 150c for transmitting a voltage generated in the unit battery module 110 are provided on one side of the unit battery module 110. [ Each of the terminal portions 150a to 150c may be provided on one side of the series electrode 115 or the negative parallel electrode terminal 119 or the positive electrode terminal 117 and each electrode may function as the terminal portion 150a to 150c You may. Hereinafter, it is described that the series electrode 115 functions as the terminal portion 150c, and the terminal portions 150a to 150b are provided on one side of the negative parallel electrode terminal 119 and / or the positive electrode terminal 117 However, the spirit of the present invention is not limited thereto. The function and the coupling relationship of the terminal portions 150a to 150c will be described later with reference to FIG.

Terminal portions 151 are formed in the terminal portions 150a to 150c. Each terminal hole 151 is penetrated through the cartridge center 121 by a fastening means 180 to be described later, and the detailed coupling relationship will be described later.

FIG. 6 is a perspective view of the battery cartridge according to the embodiment of the present invention, FIG. 7 is a view showing a part of the battery cartridge shown in FIG. Fig.

6 to 8, a battery cartridge according to an embodiment of the present invention includes a unit battery module 110 formed of a plurality of unit cells 110-1 to 110-4 for generating a current, The unit cells 110-1 to 110-4 are connected to each other in series or in parallel and the electrode terminals 150a to 150c having the terminals 150a to 150c for transmitting a voltage generated in the unit cell module 110 are connected to one side of the unit cells 110-1 to 110-4. A cartridge center 121 having terminal mounting portions 121-1a to 121-1b for receiving the unit battery modules 110 and coupling the terminal portions 150a to 150c; A connector 160 for voltage detection connected to the terminal portion 161 and the pin connector 163 via a conductor 162 and a terminal portion 150a to 150c for connecting the terminal portion 161 and the terminal mounting portion 121-1a to 121-1b), and a fastening means (180) fastened to the fastening means (180) It is confident (150a to 150c) and comprises a nut plate (170) for coupling to the terminal unit 161, the terminal mounting portion (121-1a to 121-1b).

As described above, the unit cell module 110 is provided with a plurality of terminal portions 150a to 150c. Each of the terminal units 150a to 150c receives the current generated by the unit cell module 110 and transfers the current to the BMS to measure the current of each unit cell based on the current value .

The cartridge center 121 accommodates the unit battery module 110 and has a plurality of terminal mounting portions 121-1a to 121-1b to which the plurality of terminal portions 150a to 150c are coupled. The terminal mounting portions 121-1a to 121-1b may be formed integrally with the cartridge center 121. [ The terminal mounting portions 121-1a to 121-1b may be formed to be recessed to mount the terminal portions 150a to 150c, but the terminal mounting portions 121-1a to 121-1b are not limited in shape. The terminal mounting portions 121-1a to 121-1b have a plurality of terminal mounting portions 121-1a to 121-1b corresponding to the respective terminal portions 150a to 150c so that the plurality of terminal portions 150a to 150c can be mounted And is formed in the cartridge center 121.

The voltage detecting connector 160 is provided in the cartridge center 121. The voltage detecting connector 160 may be provided inside the cartridge center 121. Since the voltage detecting connector 160 is provided inside the cartridge center 121 and complicated lead wires are not provided outside the battery cartridge 121, the number of working hours for assembling the battery cartridge is saved, It is possible to save work flow by complicated wire.

The voltage detecting connector 160 is in contact with the terminal portions 150a to 150c and receives current from the unit battery module 110. [ The voltage detecting connector 160 is provided inside the cartridge center 121 and contacts the terminal portions 150a to 150c. The voltage detecting connector 160 contacts the terminal portions 150a to 150c to transmit the current generated in the unit battery module 110 to the battery management system.

The battery management system measures the voltage of the unit battery module 110 with the amount of the current received from the voltage detecting connector 160. The charging amount or the discharging amount of the overdischarged or overcharged unit battery module 110 is controlled to be charged or discharged normally according to the resultant value of the measured voltage.

The voltage detecting connector 160 is provided with a terminal portion 161 receiving current from one side and the other side, respectively, and each terminal portion 161 is connected to a conductor 162. The terminal portion 161 of the voltage detection connector 160 is brought into contact with the respective terminal portions 150a to 150c. The terminal portion 161 may be formed of an O-ring having a hole formed at the center thereof. Further, it can be formed into a rectangle having a hole at the center, and the following description will be made on the assumption that it is formed as an O-ring, but the idea of the present invention is not limited thereto.

One side and the other side of the terminal portion 161 are in contact with the respective terminal portions 150a to 150c and one side is in contact with the series electrode 115 and the other side is the negative parallel electrode terminal 119 or the positive electrode terminal 117, And the terminal portions 150a to 150c provided on one side of the terminal portion 150a.

The current received from the terminal unit 161 is transmitted to the conductor 162 connected to the terminal unit 161. The conductors 162 are generally formed of electric wires, but they include all kinds of conductors that carry electric current.

The conductors 162 are fastened to a plurality of fastening portions 121-2 provided in the cartridge center 121. The cartridge center 121 is formed with a plurality of fastening portions 121-2 for fastening and fixing the conductor 162 and the conductor 162 is fastened and fixed to the fastening portions 121-2. The conductor 162 is fastened to the coupling part 121-2 so that the unit cell module 110 and the conductor 162 interfere with each other to prevent the heat generated in the unit cell module 110 from damaging the conductor 162 .

The conductor 162 is further provided with a pin connector 163 for transmitting a current received from each of the terminal portions 161. The pin connector 163 is a connector for transmitting the current received from one side and the other side of the conductor 162 to the battery management system. The pin connector 163 is bonded to the conductor 162 in various manners such as soldering, interference fit and the like. The pin connector 163 is formed so that the detection line 200 for transferring the current of the unit cell module 110 to the battery management system can be coupled. In this case, the coupling between the detection line 200 and the pin connector 163 can be attached and detached, but the coupling is firm, so that the problem that the dimensional tolerance due to the interference fit method is loosened is eliminated. Further, when the unit cell module 110 fails, the detection line 200 can be reused because the unit cell module 110 can be attached to or detached from the pin connector 163.

The nut plate 170 is fastened to the terminal mounting portions 121-1a to 121-1b. The nut plate 170 is formed to correspond to the terminal mounting portions 121-1a to 121-1b so as to be fastened to the terminal mounting portions 121-1a to 121-1b. But the shape of the nut plate 170 is not limited to the above embodiments.

The nut plate 170 is formed with a nut plate hole 171 through the nut plate 170 to fasten the fastening means 180 described below.

6 to 8, one terminal portion 150a to 150c, one terminal portion 161 and one nut plate 170 are connected to the terminal mounting portions 121-1a to 121- 1b and fastening means 180, respectively.

The terminal portions 150a to 150c are formed with holes for fastening the fastening means 180 to the terminal portions 150a to 150c. When each terminal portion 161 is formed as an O-ring, a hole is formed at the center so that the fastening means 180 is fastened. A nut plate hole 171 is formed in the center of the nut plate 170 as described above. Holes are formed in the center so that the fastening means 180 is fastened to the terminal mounting portions 121-1a to 121-1b.

Referring to the coupling relationship based on the above-described configuration, the voltage detecting connector 160 is fastened to the cartridge center 121. One terminal portion 161 of the voltage detecting connector 160 is fastened to one terminal mounting portion 121-1a to 121-1b.

The nut plate 170 is fastened to the terminal mounting portions 121-1a to 121-1b in a state where the terminal portion 161 is fastened to the terminal mounting portions 121-1a to 121-1b. The nut plate 170 fixes the terminal portion 161 and the terminal mounting portions 121-1a to 121-1b. The unit battery module 110 is fastened to the cartridge center 121 in a state where the nut plate 170 is fastened to the terminal mounting portions 121-1a to 121-1b. The terminal portions 150a to 150c of the unit battery module 110 are in contact with the nut plate 170. [

In this state, the fastening means 180 has the terminal portions 150a to 150c, the terminal portion 161 and the nut plate 170 mounted on the terminal mounting portions 121-1a to 121-1b, 151, a nut plate hole 171, a hole formed in the terminal portion 161, and a hole formed in the terminal mounting portions 121-1a to 121-1b. The fastening means 180 may be formed of a screw, a screw, a pin, a rivet or the like which is integrally fastened through the holes described above and is formed as a screw in the following description. However, the fastening means 180 is limited Or not.

The fastening means 180 is fastened and the fixing of the terminal portions 150a to 150c and the terminal portion 161 becomes firm and the problem of dimensional tolerance is eliminated. When the unit cell module 110 transmits a current to the voltage detecting connector 160 due to the fixing of the terminal portions 150a to 150c and the terminal portion 161, And the problem that the dimensional tolerance further worsens due to the vibration caused by the running of the vehicle is eliminated.

9A and 9B are cross-sectional views of portions A and B shown in Fig. 9A and 9B, a battery cartridge according to an embodiment of the present invention includes a terminal portion 150a-150c and a nut plate 170 which are in contact with each other, and a terminal portion 161 is formed inside the nut plate 170 .

The terminal portion 161 is first fastened to the terminal mounting portions 121-1a to 121-1b. The terminal portion 161 is fastened to either one side or the other side of the terminal mounting portions 121-1a to 121-1b. The holes of the terminal portion 161 and the holes of the terminal mounting portions 121-1a to 121-1b are matched so that the fastening means 180 can penetrate.

The nut plate 170 is fastened with the terminal portion 161 fastened to the terminal mounting portions 121-1a to 121-1b. As the nut plate 170 is bent and shaped in the shape of "C", the inner hollow space is fastened in such a manner as to cover the terminal mounting portions 121-1a to 121-1b and the terminal portion 161, So that the terminal portion 161 is brought into contact with the inner side of the terminal portion 161. The nut plate holes 171 are aligned with the respective holes so that the fastening means 180 can pass through the terminal mounting portions 121-1a to 121-1b and the terminal portion 161. [ The nut plate 170 includes a first flat plate portion 172 through which the fastening means 180 passes and a second flat plate portion 172 bent by the first flat plate portion 172 and disposed facing the first flat plate portion 172, And a second flat plate portion 174 having protrusions 175 penetrating through the first flat plate portions 180. The terminal portions 150a to 150c are in contact with the first flat plate portion 172 from the outside of the nut plate 170 and the terminal portion 161 is in contact with the first flat plate portion 172 and the second flat plate portion 174 1 between the first flat plate portion 172 and the second flat plate portion 174 and the terminal mounting portions 121-1a to 121-1b are in contact with the first flat plate portion 172 and the second flat plate portion 174 And is in contact with the other of the first flat plate portion 172 and the second flat plate portion 174.

The terminal portions 150a to 150c are brought into contact with the outside of the nut plate 170. [ The terminal portions 150a to 150c transmit the current transmitted from the unit cell module 110 to the nut plate 170 and the nut plate 170 transmits the received current to the terminal portion 161. [ The terminal unit 161 transfers the received current to the pin connector 163 through the conductor 162 and the detection line 200 connected to the pin connector 163 transfers the current to the battery management system, The voltage of the unit cell module 110 is measured.

FIG. 10 is a side view of a battery cartridge according to an embodiment of the present invention, and FIG. 11 is a view showing another side.

Referring to FIGS. 10 and 11, a battery cartridge according to an embodiment of the present invention includes a plurality of battery cartridges stacked in the same direction so as to form negative electrode holding parallel electrode terminals 119a to 119f and positive electrode double row electrode terminals 117a To 117f are arranged in a line. The first negative electrode parallel negative electrode terminal 119a is connected to the second positive electrode positive electrode terminal 117b located on the diagonal line by a first connector 118a and the second negative electrode negative parallel electrode terminal 119b is connected to the third And is connected to the positive electrode double row electrode terminal 117c and the second connector 118b. The third negative electrode parallel negative electrode terminal 119c which is the negative parallel electrode terminal in the bottom layer of the stacked battery cartridge is not connected to the other positive electrode terminal. The fourth sound parallel electrode terminal 119d which is the sound parallel electrode terminal of the uppermost layer is composed of a first meandering electrode terminal 117a and a third connector 118c which are double row electrode terminals corresponding to the top layer of the adjacent stacked battery cartridges, Lt; / RTI > The fifth negative parallel electrode terminal 119e is connected to the fourth positive row electrode terminal 117d through the fourth connector 118d and the sixth negative parallel electrode terminal 119f is connected to the fifth positive row electrode terminal 117e and the fifth negative parallel electrode terminal 119e, Connector 118e.

Each of the plurality of connected battery cartridges forms one unit body in a serial connection manner and serves as one current supply unit. In this case, the portion for measuring the current and detecting the voltage is either the negative parallel electrode terminal 119a to 119f or the positive electrode terminal 117a to 117f portion and the series electrode portion. That is, since the negative parallel electrode terminals 119a to 119f are connected to the positive electrode terminals 117a to 117f and the connectors 118a to 118e, only either one of the negative electrode terminals 119a to 119f can measure the current and measure the voltage.

Therefore, the voltage detecting connector 160 according to the embodiment of the present invention is provided with the terminal electrodes 151a and 151b provided on any one of the series electrode 115 and the negative parallel electrode terminals 119a to 119f or the positive electrode terminals 117a to 117f. Lt; RTI ID = 0.0 > 150a-150c < / RTI >

The other side view of the plurality of battery cartridges shown in Fig. 11 shows a state in which the detection line 200 is fastened to the pin connector 163. The voltage detecting connector 160 which receives the current of either the series electrode 115 or the negative parallel electrode terminals 119a to 119f or the positive electrode terminal 117a to 117f receives the current from the pin connector 163, To the battery management system. The detection line 200 may be formed of a plurality of conductive lines, and one end of each conductive line may be provided with a pin connector connection portion 201 to be coupled to the pin connector 163. Each pin connector connecting portion 201 is fastened to each battery cartridge and in this case the pin connector 163 and the pin connector connecting portion 201 are tightly coupled so that the dimensional tolerance due to the forced fit method is loosened do. Further, since the fastening method between the detection line 200 and the pin connector 163 is a detachable fastening type, the detection line 200 can be reused as it is when one battery cartridge is replaced. In addition, since the wires for the leads are easily aligned, the number of operations is reduced, the voltage detecting connector 160 is not used for each unit cell, and only one voltage detecting connector 160 per battery cartridge is used. .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

110: Unit battery module 131-1: Upper cartridge inner
131-2: Lower cartridge inner 121: Cartridge center
141-1: upper cover 141-2: lower cover
141a: convex portion 141b: concave portion
123: Cover front 124: Spacer
125: Cartridge support 121b: Side hole
122: cover 113: negative parallel electrode
115: serial electrode 117: positive electrode terminal
151: Terminal part hole 150: Terminal part
114: positive electrode 119: negative parallel electrode terminal
121-1: Terminal mounting part 160: Voltage detecting connector
161: Terminal part 162: Conductor
163: Pin connector 170: Nut plate
171: nut plate hole 121-2: fastening part
180: fastening means 118: connector
200: detection line 201: pin connector connection

Claims (8)

A unit battery module formed of a plurality of unit cells for generating current;
An electrode terminal connected to at least one of the plurality of unit cells in series or parallel and having a terminal portion for transmitting a voltage generated in the unit cell module to one side;
A cartridge center in which the unit battery module is housed and a terminal mounting portion to which the terminal unit is coupled is formed;
A voltage detecting connector provided in the cartridge center and having a terminal portion and a pin connector connected to each other through conductors;
Fastening means for passing through the terminal portion, the terminal portion, and the terminal mounting portion; And
A nut plate coupled with the fastening means and coupling the terminal portion and the terminal portion to the terminal mounting portion;
.
Claim 2 has been abandoned due to the setting registration fee. The method according to claim 1,
Wherein the terminal portion, the terminal portion, the terminal mounting portion, and the nut plate each have a hole through which the fastening means passes.
Claim 3 has been abandoned due to the setting registration fee. The method according to claim 1,
Wherein the nut plate comprises:
A first flat plate portion through which the fastening means passes,
And a second flat plate portion bent at the first flat plate portion and facing the first flat plate portion, the second flat plate portion having protrusions penetrating through the fastening means.
delete Claim 5 has been abandoned due to the setting registration fee. The method according to claim 1,
And a plurality of fastening portions to which the conductors are fastened are formed in the cartridge center.
delete delete Claim 8 has been abandoned due to the setting registration fee. The method of claim 3,
The terminal portion is in contact with the first flat plate portion from the outside of the nut plate,
Wherein the terminal portion is in contact with any one of the first flat plate portion and the second flat plate portion between the first flat plate portion and the second flat plate portion,
Wherein the terminal mounting portion is in contact with the other of the first flat plate portion and the second flat plate portion between the first flat plate portion and the second flat plate portion.

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