KR102616253B1 - Battery cell charge/discharge terminal module - Google Patents

Abstract

The present invention relates to a battery cell charging/discharging terminal module consisting of a mounting block (10), a support member (20), a pressing member (30), and first and second terminals (40A, 40B). According to this, the first terminal and the second terminal By using a terminal module with two terminals installed together, there is an advantage that it can be easily applied to battery cells with terminals protruding side by side on one end.

Description

Battery cell charge/discharge terminal module}

The present invention relates to a battery cell charge/discharge terminal module, and more specifically, to a battery cell charge/discharge terminal module that can be easily applied to a battery cell with terminals protruding in parallel at one end.

A battery uses a chemical or physical reaction to obtain electrical energy, and these chemical batteries are divided into primary batteries and secondary batteries.

Batteries that are used once and then discarded, such as manganese batteries, alkaline batteries, and mercury batteries, are called primary batteries, and batteries that can be recharged and used again after they run out of electricity, such as rechargeable batteries or lead acid batteries, are called secondary batteries. Recently, cell phones, As the spread of portable electronic devices such as PDAs, smartphones, and laptop computers increases, there is a need for technology development for secondary batteries that can be used for a long time on a single charge and have a long lifespan.

These secondary batteries include nickel-cadmium (Ni-Cd), nickel-hydrogen (Ni-MH), lead acid battery (SLA), lithium-ion, and lithium-polymer.

These secondary batteries are composed of a battery pack format in which several cells, or unit cells, are connected internally in consideration of charge/discharge efficiency and current capacity. Currently, they are characterized by high energy density, light weight, high voltage, pollution-free, high output, and fast charging. Lithium batteries, which have advantages such as excellent lifespan, are receiving attention, and lithium batteries are classified into lithium ion batteries, lithium ion polymer batteries, and lithium metal polymer batteries.

To explain the manufacturing process of these lithium batteries, the hard pack process involves assembling a case after combining circuits, terminals, or connection parts to a bare cell, and charging and discharging (formation) is performed on this hard pack. It consists of a charging and discharging process.

Here, during the hard pack process, the shape and shape of the battery are determined to suit the use and required characteristics of the product, and during the charge and discharge process, the performance of the battery is determined and the quality of the product is determined.

The charging and discharging process of a secondary battery is performed by pressing the electrode tabs placed between the current and voltage electrode tabs of the gripper assembly and the support. In this process, multiple battery cells can be charged and discharged in a limited space. It is important to ensure that

However, in the case of the prior art, the two clips of the gripper that apply current to charge and discharge the battery do not have enough force to bite the electrodes of the battery, so there are cases where the electrode part moves during battery charging and discharging, causing problems during battery charging and discharging. There is a problem of instability during operation and reduced charging and discharging efficiency.

In addition, the structure was very complex, which was very disadvantageous in terms of maintenance, and it was difficult to manufacture and compact, which had the fundamental problem of greatly reducing work productivity.

In order to solve the above problems, the technology is Republic of Korea Patent No. 10-2050033 (charge/discharge terminal module and battery cell high-temperature pressurization device equipped with the same). It has a very simple structure, so compactization is possible, and it is easy to manufacture. A technology that is easy to use and can significantly improve grounding reliability has been disclosed.

However, the prior art had a problem in that it could not be practically applied to battery cells with terminals protruding parallel to one end, in that it charged and discharged battery cells with terminals protruding from both ends.

1. Domestic Patent No. 10-2050033

The present invention was developed to solve the above problems, and its purpose is to provide a new concept of battery cell charging and discharging terminal module that can be easily applied to battery cells with terminals protruding side by side on one end.

The present invention to achieve the above object,

A mounting block installed on a pressurizing plate that is operated by a pressurizing means to pressurize the battery cell;

A support portion detachably installed on one side of the mounting block;

An insulating body detachably installed on the opposite side of the mounting block, first and second receiving parts cut to a certain size on one side of the insulating body and spaced apart vertically, and a support part protruding from the other side of the insulating body; A pressing portion consisting of first and second spacers that protrude in parallel from the lower end of the insulating body and are spaced left and right, and a first fitting protrusion that is disposed relatively closer to the first receiving portion than the supporting portion;

A current terminal consisting of a body portion having a protrusion hole that can be inserted and removed into the first aligning protrusion, an elastic portion extending from the body portion and disposed in the first receiving portion and having a curved end, and a cut portion formed in the elastic portion; A first terminal consisting of a voltage terminal and fixed to an insulating body by sequentially stacking a current terminal, an insulating film, and a voltage terminal;

A body portion disposed to be spaced apart from the body portion of the first terminal and whose movement is restricted by a support portion, an elastic portion extending from the body portion and disposed in a second receiving portion and having a curved end, and a cut formed in the elastic portion. It is characterized by being composed of a current terminal and a voltage terminal composed of a second terminal in which the current terminal, an insulating film, and a voltage terminal are sequentially stacked and fixed on an insulating body.

Additionally, in the present invention,

The insulating body is further provided with reinforcing second fitting protrusions disposed relatively closer to the support portion than to the second accommodating portion;

The second terminal is further provided with a reinforcing protrusion hole that is removably inserted into the second aligning protrusion.

Additionally, in the present invention,

The insulating body is further provided with a reinforcing spacer disposed between the first terminal and the second terminal to maintain a certain distance between the first terminal and the second terminal so that they do not contact each other.

The present invention has the advantage that it can be easily applied to a battery cell with terminals protruding in parallel at one end using a terminal module in which the first terminal and the second terminal are installed together.

In addition, the present invention has the advantage of being able to install the first and second terminals in the pressing part in the correct position and restrict their movement through mutual coupling of the first and second aligning protrusions provided in the pressing part and the protruding holes provided in the first and second terminals. there is.

In addition, the present invention has the advantage of fundamentally blocking the first and second terminals from contacting each other while maintaining a certain distance between them as the spacer provided in the pressing portion is disposed between the first and second terminals.

Figure 1 is a plan view of a battery cell pressurizing device to which a battery cell charging/discharging terminal module according to the present invention is applied.
Figure 2 is a cross-sectional view taken along line A-A' of Figure 1.
Figure 3 is a cross-sectional view taken along line B-B' of Figure 1.
Figure 4 is an enlarged view of Figure 3.
Figures 5a to 5c are a front perspective view, a rear perspective view, and an exploded perspective view of the charging/discharging terminal module according to the present invention.
Figure 6 is a perspective view showing the pressurized portion separately extracted from the charging and discharging terminal module according to the present invention.
Figures 7A to 7C are diagrams showing the process of pressurizing the terminals of a battery cell using the charging/discharging terminal module of the present invention.

Hereinafter, it will be described in detail based on the attached drawings.

Figure 1 is a plan view of a battery cell pressurizing device to which the battery cell charging and discharging terminal module according to the present invention is applied, Figure 2 is a cross-sectional view taken along line A - A' of Figure 1, Figure 3 is a cross-sectional view taken along line B - B' of Figure 1, and Fig. 4 is an enlarged view of Figure 3, Figures 5a to 5c are a front perspective view, rear perspective view, and exploded perspective view of the charge/discharge terminal module according to the present invention, and Figure 6 is a separate extract of the pressurized portion from the charge/discharge terminal module according to the present invention. This is a perspective view.

As an example, the battery cell pressurizing device includes a jig body (A) on which a plurality of battery cells (Bt) are mounted, as shown in Figures 1 to 3; A pressure plate (B) disposed at the interface of each battery cell (Bt); An inlay (C) disposed between the pressurizing plates (B) and supporting the battery cells (Bt); It consists of a pressurizing means (D) that moves the pressurizing plate (B) to pressurize the battery cell (Bt), and since this is a widely known technology in the field, detailed description thereof will be omitted. Additionally, the pressurizing plate (B) may be provided with a heating wire (not shown).

As an example, the terminal module (1) according to the present invention, as shown in Figures 1 and 4, is installed on the pressure plate (B) and moved by the pressure plate (B), and the battery cell (Bt) It has the function of allowing the battery cell (Bt) to be charged and discharged by intermittently touching the terminal (Bt-1).

Referring to FIGS. 5A to 5C, the terminal module 1 is composed of a mounting block 10, a support member 20, a pressing member 30, and first and second terminals 40A and 40B.

The mounting block 10 is a rectangular parallelepiped-shaped member, and is provided with a support insertion groove 11 and a pressure insertion groove 12 on one side and the opposite side, respectively.

Additionally, as an example, the support member 20 is removably inserted into the support insertion groove 11 to stand vertically, and the pressure member 30 is removably inserted into the pressure portion insertion groove 12 to stand vertically. do.

On the other hand, the support insertion groove 11 is formed by a 'ㅂ'-shaped member (see Figure 5c) that abuts on one surface of the mounting block 10 and is fixed via a fixing means (screw bolt), and the pressurizing part The insertion groove 12 is formed by a member (see FIG. 5C) that abuts the other surface of the mounting block 10 and is fixed via a fixing means (screw bolt). If necessary, the above members are used to manufacture the mounting block 10. It may be manufactured to be integrated with the mounting block 10.

The support member 20 is a plate made of an insulating material with a certain width and thickness, and is inserted into the support insertion groove 11 of the mounting block 10 and installed side by side, as shown in FIG. 3. It is placed against one side of the terminal (Bt-1) of the battery cell (Bt) and serves to support the terminal (Bt-1).

The pressing member 30 is a plate made of an insulating material with a certain width and thickness, and is inserted into the pressing part insertion groove 12 of the mounting block 10 and installed side by side, as shown in FIG. 3. It serves to press the other side of the terminal (Bt-1) of the arranged battery cell (Bt) toward the support member (20).

Referring to Figure 6, the pressing member 30 is composed of an insulating body 31, first and second receiving parts (32, 33), a fixed position part, and first and second position movement limiting protrusions (37, 38). .

The insulating body 31 includes a first insulating body part 31a and a second insulating body part 31b arranged vertically, and a first insulating body part 31a and a second insulating body part 31b are provided on one side of the first and second insulating body parts 31a and 31b. ·The bent portions (41b, 42b) of the second terminal (40A, 40B) are insulated so that the elastic portion (41b, 42b), which bends elastically when the terminal (Bt-1) of the battery cell (Bt) is pressed, can be accommodated inside. One side of the body 31 is cut to a certain size, and first and second receiving parts 32 and 33 are formed, spaced apart from each other up and down.

In addition, when the first terminal (40A) or the second terminal (40B) is assembled to the insulating body (31), the first terminal (40A) or the second terminal (40B) is connected to the insulating body (31). ) The fixed position part that guides the upper fixed position to the correct position is formed integrally, and the fixed position part consists of the first, second, third, fourth, fifth and sixth fixed position parts (34a, 34b, 34c, 34d, 34e, 34f). do.
The fourth fixed position portion 34d, which is integrally formed on the other side of the insulating body 31, protrudes along the longitudinal direction of the insulating body 31 so that the second terminal 40B is installed in the insulating body 31 in the correct position. It acts as a kind of stopper to limit the separation of the second terminal (40B) while guiding it as much as possible.
In addition, on one side of the insulating body 31, that is, opposite to where the fourth regular position part 34d is formed, a second fixed position part 34b is formed, and with respect to the second fixed position part 34b, the lower and upper parts are formed, respectively. A first fixed position part (34a) and a third fixed position part (34c) are provided, between the first fixed position part (34a) and the second fixed position part (34b), and between the second fixed position part (34b) and the third fixed position part ( A first accommodating part 32 and a second accommodating part 33 are formed between 34c).

In addition, at the lower end of the insulating body 31, 5th and 6th fixed position parts 34e and 34f protrude in parallel and are spaced left and right, where the 5th fixed position part 34e constitutes the first terminal 40A. It serves to limit movement to one side while guiding the body portion 41a of the current terminal 41 so that it can be placed in the correct position, and the sixth fixed position part 34f is together with the fourth fixed position part 34d. While guiding the body portion 41a of the current terminal 41 and the body portion 42a of the voltage terminal 42 constituting the second terminal 40B to be positioned in the correct position, the body portions 41a and 42a It serves to maintain a certain distance from each other.

In addition, the insulating body 31 has a first accommodating part 32 or a second accommodating part 33 formed on the same horizontal surface to limit the positional movement of the first terminal 40A or the second terminal 40B. A position movement limiting protrusion is formed, and the position movement limiting protrusion is composed of a first position movement limiting protrusion (37) and a second position movement limiting protrusion (38).
The first position movement limiting protrusion 37 protrudes from the first insulating body portion 31a constituting the insulating body 31 and is relatively closer to the first receiving portion 32 than the fourth fixed position portion 34d. It is disposed, where the first position movement limiting protrusion 37 is inserted through the protruding holes 41a-1 and 42a-1 of the first terminal 40A and serves to limit the positional movement of the first terminal 40A. do.

In addition, the second position movement limiting protrusion 38 protrudes from the second insulating body portion 31b constituting the insulating body 31 and is positioned closer to the fourth fixed position portion 34d than the second receiving portion 33. It is arranged closer, where the second position movement limiting protrusion 38 is inserted through the protruding holes 41a-1, 42a-1 of the second terminal 40B to limit the positional movement of the second terminal 40B. It plays a role.

In addition, the insulating body 31 is integrally formed with a spacer 39 that protrudes from the insulating body 31 and is disposed between the first terminal 40A and the second terminal 40B. Here, the spacer 39 serves to prevent the first terminal 40A and the second terminal 40B from electrically contacting each other by maintaining a certain distance from each other.

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The first and second terminals 40A, 40B are conductors and are composed of a current terminal 41 and a voltage terminal 42, and are installed on the pressing member 30 to be spaced apart from each other to charge and discharge the battery cell Bt. It is used for this purpose.

The current terminal 41 of the first terminal 40A includes a body portion 41a, an elastic portion 41b extending from the body portion 41a and disposed in the first receiving portion 32 and having a curved end, and It consists of a cutout portion 41c formed in the elastic portion 41b, and a protrusion hole 41a-1 through which the first position movement limiting protrusion 37 is inserted is integrally formed in the body portion 41a.

The voltage terminal 42 of the first terminal 40A includes a body portion 42a, an elastic portion 42b extending from the body portion 42a and disposed in the first receiving portion 32 and having a curved end, and It consists of a cutout portion 42c formed in the elastic portion 42b, and a protrusion hole 42a-1 through which the first position movement limiting protrusion 37 is inserted is integrally formed in the body portion 42a.

A plurality of voltage terminals 42 may be applied.

The current terminal 41 and the voltage terminal 42 are sequentially stacked on the pressing member 30 and fixed through fixing means (screw bolts), and insulation is provided between the voltage terminal 41 and the current terminal 42. An insulating film 43 is involved.

Additionally, a current line (not shown) is installed at the current terminal 41 and a voltage line (not shown) is installed at the voltage terminal 42.

The current terminal 41 of the second terminal 40B includes a body portion 41a, an elastic portion 41b extending from the body portion 41a and disposed in the second receiving portion 32 and having a curved end, and It consists of a cutout portion 41c formed in the elastic portion 41b, and a protrusion hole 41a-1 through which the second position movement limiting protrusion 38 is inserted is integrally formed in the body portion 41a.

The voltage terminal 42 of the second terminal 40B includes a body portion 42a, an elastic portion 42b extending from the body portion 42a and disposed in the first receiving portion 32 and having a curved end, and It consists of a cutout portion 42c formed in the elastic portion 42b, and a protrusion hole 42a-1 through which the second position movement limiting protrusion 38 is inserted is integrally formed in the body portion 42a.

A plurality of voltage terminals 42 may be applied.

The current terminal 41 and the voltage terminal 42 are sequentially stacked on the pressing member 30 and fixed through fixing means (screw bolts), and insulation is provided between the voltage terminal 41 and the current terminal 42. An insulating film 43 is involved.

Additionally, a current line (not shown) is installed at the current terminal 41 and a voltage line (not shown) is installed at the voltage terminal 42.

7A to 7C are diagrams showing the process of pressurizing the terminals of a battery cell using the charging/discharging terminal module of the present invention. With reference to this, the operation of the battery cell charging/discharging terminal module according to the present invention is explained as follows. .

Since the operations of the first terminal 40A and the second terminal 40B are the same, the operation of the first terminal 40A is omitted and the operation of the second terminal 40B is explained instead.

Referring to Figures 1 to 4, a battery cell (Bt) with a terminal (Bt-1) protruding parallel to one direction is inserted between the pressure plates (B) arranged at regular intervals on the jig body (A), The inserted battery cell (Bt) is supported by the inner paper (C) interposed between the pressure plates (B).

With the battery cell (Bt) inserted as described above, the pressurizing plate (B) is pressed by the pressurizing means (D), and then the heating wire (not shown) installed on the pressurizing plate (B) is pressed. By operating it, high temperature is applied while the battery cell (Bt) is pressurized. At this time, the charge/discharge terminal module (1) moved with the pressurizing plate (B) is elastically connected to the terminal (Bt-1) of the battery cell (Bt). It is confronted with

To explain this in more detail, when the pressure plate (B) moves to pressurize the battery cell (Bt), the charge/discharge terminal module (1) installed on the pressure plate (B) also moves together to pressurize the battery cell (Bt). ) is interspersed with the terminal (Bt-1).

As shown in FIGS. 7A to 7C, the support portion 20' of the mounting block 10' is arranged to face each other as a pair while the battery cell Bt is being pressed by the pressure plate B. ) and the second terminal 40B installed on the pressing member 30 of the mounting block 10 adjacent thereto are elastically abutted against the terminal Bt-1 of the battery cell Bt, and in this abutted state, the battery Charging and discharging of the cell (Bt) takes place.

In particular, in the process of the second terminal (40B) being brought into contact with the terminal (Bt-1) of the battery cell (Bt), the elastic portions (41b, 42b) of the second terminal (40B) are bent and the terminal (Bt-1) By continuously maintaining contact with the device, malfunctions due to poor contact can be fundamentally resolved.

After a certain period of time has passed, the operation of the heating wire (not shown) of the pressurizing plate (B) is stopped and the pressurizing state of the pressing plate (B) is released again by the pressing means (D). Take out the battery cell (Bt).

According to this embodiment, the elastic portion 41b of the first and second terminals 40A and 40B is in the process of touching the first and second terminals 40A and 40B to the terminal Bt-1 of the battery cell Bt. , 42b) is elastically bent and continuously maintains a contact (ground) state with the terminal (Bt-1) of the battery cell (Bt), thereby fundamentally eliminating malfunctions due to poor contact (grounding).

In addition, the present invention has a very simple structure, so it is easy to manufacture, and when a part is damaged, only the relevant part needs to be replaced, which is very advantageous in terms of maintenance.

In addition, when grounding between the first and second terminals (40A, 40B) and the terminal (Bt-1) of the battery cell (Bt), the elastic portions (41b, 42b) of the first and second terminals (40A, 40B) are elastic. As it bends and accommodates, damage can be prevented, which has the advantage of extending the product lifespan.

Meanwhile, the first and second terminals (40A, 40B) can be simply manufactured in a plate shape, but as in the present embodiment, a plurality of cut portions (41c, 42c) are provided in the first and second terminals (40A, 40B). Even if the terminal (Bt-1) is bent or not arranged to face each other, the elastic portions (41b, 42b) can be elastically bent and contacted accordingly, so that the terminal (Bt-1) of the battery cell (Bt) Contact failure can be greatly reduced by maximizing contact with the surface, and in particular, each of the elastic parts 41b and 42b can be elastically deformed even with a small force, which has the advantage of greatly improving contact performance.

Although the present invention has been described in detail only with respect to the specific embodiments described, it is obvious to those skilled in the art that various changes and modifications can be made within the technical scope of the present invention, and it is natural that such changes and modifications fall within the scope of the appended patent claims.

A: Jig body B: Pressure plate C: Inlay
D: Pressurizing means 1: Charging/discharging terminal module 10: Mounting block
11: Support part insertion groove 12: Pressure part insertion groove 20: Support member
30: Pressure member 31: Insulating body 32, 33: First and second receiving parts
40A, 40B: 1st and 2nd terminals 41: Current terminals 41a, 42a: Body part
41a-1, 42a-1: Protruded hole 42: Voltage terminal 43: Insulating film
Bt: Battery cell Bt-1: Terminal

Claims (3)

A mounting block installed on a pressurizing plate that is operated by pressurizing means to pressurize the battery cell;
A support member detachably installed on one side of the mounting block;
An insulating body that is detachably installed on the opposite side of the mounting block and includes first and second insulating body parts spaced apart upward and downward, and an insulating body that is cut to a certain size on one side of the first and second insulating body parts and is spaced apart vertically. When assembling the first and second receiving parts, the first terminal or the second terminal to the insulating body, the positioning part that guides the first terminal or the second terminal to be positioned in the fixed position on the insulating body, and the first terminal or the second terminal A pressing member consisting of first and second position movement limiting protrusions formed on the first insulating body or the second insulating body to limit the positional movement of the two terminals;
A current terminal and a voltage terminal consisting of a body part that is guided by the positioning part and assembled to the insulating body, an elastic part that extends from the body part and is disposed in the first receiving part and has a curved end, and a cutout part formed in the elastic part. A first terminal consisting of a current terminal, an insulating film, and a voltage terminal sequentially stacked and fixed to an insulating body;
A body part guided by the positioning part and assembled to the insulating body and disposed to be spaced apart from the body part of the first terminal, an elastic part extending from the body part and disposed in the second receiving part and having a curved end, and an elastic part A battery cell charge/discharge terminal module characterized in that it consists of a current terminal and a voltage terminal consisting of a cutout formed in the portion, and a second terminal in which the current terminal, an insulating film, and a voltage terminal are sequentially stacked and fixed on an insulating body.
According to paragraph 1,
The second position movement limiting protrusion is spaced apart from the second receiving portion and is formed on the second insulating body portion,
The first position movement limiting protrusion is formed on the first insulating body part close to the first accommodating part so as to be positioned between the second accommodating part and the second position movement limiting protrusion,
A battery cell charging/discharging terminal module characterized in that the first terminal and the second terminal are provided with protruding holes so that the first and second position movement limiting protrusions can be removably inserted.
According to claim 1 or 2,
The battery cell charging/discharging terminal module characterized in that the insulating body is further provided with a reinforcing spacer disposed between the first terminal and the second terminal to maintain a certain distance between the first terminal and the second terminal so that they do not contact each other.

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