KR20130042995A - Printed circuit board for connecting battery elctrode, battery pack having the same, and method for connecting batteries - Google Patents

Abstract

PURPOSE: A connecting method of batteries in a battery pack is provided to connect the batteries through a printed circuit board, to have simple manufacturing process of a battery pack, and to improve power of a printed circuit board type battery pack. CONSTITUTION: A connecting method of batteries(100) in a battery pack comprises a step of arranging a plurality of positive electrode terminal and a negative electrode terminal of a random battery in a first direction on a printed circuit board(300); a step of arranging neighboring batteries connected to the random battery in a second direction opposite the first direction; and a step of connecting the positive electrode terminal of the random battery with a negative electrode terminal of one battery of the two neighboring batteries and connecting the negative electrode terminal of the random battery with a positive electrode terminal of the other battery of the two neighboring batteries.

Description

Printed circuit board for connecting electrode terminals, a battery pack including the same, and a method of connecting a plurality of batteries of the battery pack

The present invention relates to a printed circuit board for connecting electrode terminals, a battery pack including the same, and a method of connecting a plurality of cells of the battery pack.

Lithium secondary batteries include a lithium ion battery (Li-Ion Battery), which is in the form of a metallic can, and a lithium polymer battery (Li-Polymer battery) manufactured in a coating form of a synthetic resin series. The lithium polymer battery uses a polymer electrolyte, which is a polymer polymer in solid or gel form, instead of a liquid electrolyte, while maintaining the performance of the lithium ion battery. Therefore, lithium polymer batteries have a low risk of leakage and explosion, can be made thin and compact, and are widely used in mobile devices to automobiles.

The battery pack is made by connecting a plurality of batteries. The battery pack may connect the electrodes and the electrodes with a metal plate through which current can flow, and the electrodes and the metal plate may be connected in parallel to each other by bolts. The bolt fastening type battery pack is fastened with bolts, so it is possible to make a battery pack with low output and high output by adjusting the thickness of the metal plate. Therefore, the bolt fastening battery pack is used in electric vehicles or large-capacity energy storage devices. However, the bolt fastening battery pack is complicated in manufacturing process, and small cells may be difficult to connect.

The battery pack may connect electrodes to a printed circuit board (PCB) by soldering, and form a current path between the electrodes through the pattern of the printed circuit board. In the printed circuit board type battery pack, a manufacturing process is simple because the plurality of batteries are connected by soldering an electrode to the printed circuit board. However, since the printed circuit board for connecting electrodes until now is designed to insert the electrodes of the battery in the same direction, the battery pack connects the negative electrode of the battery and the positive electrode of the neighboring battery in a long current pattern to the printed circuit board. At this time, the current that can flow through the current pattern is limited. Therefore, there is a limit to the printed circuit board type battery pack to be used in devices requiring high power, such as electric tools or electric bicycles.

The problem to be solved by the present invention is that in a battery pack that connects a plurality of cells, the neighboring cells are arranged in different electrode directions to close the electrode terminals of different polarities, and the current flows directly from the electrode to the electrode through this arrangement To provide a printed circuit board and a battery pack implementing the same.

A battery pack according to an embodiment of the present invention is a method of connecting a plurality of cells in series by using a printed circuit board, the positive electrode terminal and the negative terminal of any of the plurality of cells arranged in the first direction on the printed circuit board Disposing the two neighboring cells connected to the arbitrary cells in a second direction opposite to the first direction, and connecting the positive terminal of the arbitrary cells to the negative terminal of any one of the two neighboring cells, And connecting the negative terminal of the arbitrary battery and the positive terminal of the remaining battery of the two neighboring cells, wherein the optional battery is a battery positioned between the both ends of the plurality of cells connected in series.

In the above method, the positive terminal of the first battery connected to one end of the plurality of cells connected in series is the positive terminal of the battery pack, the negative terminal of the second battery connected to the other end of the plurality of cells connected in series is the negative terminal of the battery pack to be.

Connecting the positive terminal of the arbitrary battery and the negative terminal of any one of the two neighboring cells, and connecting the negative terminal of the arbitrary battery and the positive terminal of the other of the two neighboring battery, the electrode terminal of the arbitrary battery and Electrode terminals of the two neighboring batteries may be connected to each other by lead on the printed circuit board.

A printed circuit board for connecting a plurality of batteries in series according to an embodiment of the present invention, comprising: a plurality of terminal mechanism holes into which the plurality of batteries are inserted in parallel, and arranged in consideration of the position of electrode tabs; And a shield mask unit disposed in consideration of the bending direction of the electrode terminal inserted into the terminal device hole array unit and attaching the inserted electrode terminal to the terminals such that neighboring cells have opposite electrode directions. It is inserted into the instrument hole array.

The terminal device hole arrangement part may include a first terminal device hole and a second terminal device hole in which two electrode terminals of the battery are respectively inserted, forming a terminal device hole pair, and a plurality of terminal device hole pairs may be arranged side by side.

The shield mask portion connects the first terminal mechanism hole of the arbitrary terminal mechanism hole pair and the first terminal mechanism hole of the terminal mechanism hole pair adjacent to the arbitrary terminal mechanism hole pair, and the second terminal mechanism hole of the arbitrary terminal mechanism hole pair and the arbitrary A second terminal mechanism hole of another terminal mechanism hole pair adjacent to the terminal mechanism hole pair can be connected.

The solder mask unit connects the positive electrode terminal inserted into the first terminal mechanism hole of the arbitrary terminal mechanism hole pair and the negative electrode terminal inserted into the first terminal mechanism hole of the adjacent terminal mechanism hole with lead, and the arbitrary terminal. The negative electrode terminal inserted into the second terminal mechanism hole of the instrument hole pair and bent may be connected to the positive electrode terminal inserted into the second terminal mechanism hole of the other adjacent terminal mechanism hole with lead.

The apparatus may further include a current pattern unit connecting an electrode terminal of an arbitrary battery inserted into the terminal device hole array unit and an electrode terminal of a battery adjacent to the arbitrary battery.

The terminal device hole array unit may be inserted into a battery with the electrode tab is biased to one side.

A battery pack for connecting electrode terminals using a printed circuit board according to an embodiment of the present invention, a plurality of cells including a positive terminal and a negative terminal, and the plurality of batteries are inserted, the plurality of cells are connected in series And a printed circuit board connecting adjacent electrode terminals of the plurality of batteries so that a current flows, wherein the plurality of batteries are arranged on the printed circuit board such that neighboring batteries are in opposite electrode directions.

The printed circuit board may arrange the positive terminal and the negative terminal of any of a plurality of cells in a first direction, and arrange neighboring cells connected to the arbitrary cells in a second direction opposite to the first direction.

The printed circuit board may include a terminal device hole arrangement unit in which terminal device holes into which the electrode terminals of the plurality of batteries are inserted are arranged, and a solder mask part connecting adjacent terminal device holes with lead.

According to an exemplary embodiment of the present invention, instead of flowing current between cells through a current pattern in the printed circuit board, the electrodes of neighboring cells are directly connected to each other, and thus the battery pack is not affected by the current pattern of the printed circuit board. Can shed. According to an exemplary embodiment of the present invention, since a plurality of batteries of a battery pack are connected through a printed circuit board, a manufacturing process is simple and a high output printed circuit board type battery pack may be designed. In addition, according to an embodiment of the present invention, since the electrodes of the plurality of batteries are directly connected, output characteristics may be improved by lowering impedance.

1 is a view of a battery according to an embodiment of the present invention.
2 is a view showing a battery arrangement structure according to an embodiment of the present invention.
3 is a diagram illustrating a printed circuit board according to an exemplary embodiment of the present invention.
4 is a view showing a battery arrangement structure according to another embodiment of the present invention.
Figure 5a is a view showing the terminal mechanism hole arrangement according to an embodiment of the present invention.
5B is a view showing a shield mask unit according to an embodiment of the present invention.
5C is a diagram illustrating a printed circuit board according to an exemplary embodiment of the present invention.
Figure 6a is a view showing a terminal mechanism hole arrangement according to another embodiment of the present invention.
6B is a view illustrating a shield mask unit according to another embodiment of the present invention.
6C is a diagram illustrating a printed circuit board according to another exemplary embodiment of the present invention.
7 is a view showing a battery pack according to an embodiment of the present invention.
8 is a flowchart of a method of serially connecting a plurality of batteries according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

Now, a printed circuit board for connecting electrode terminals, a battery pack using a printed circuit board, and a method of connecting a plurality of batteries of the battery pack according to embodiments of the present invention will be described in detail with reference to the drawings.

1A and 1B are each an illustration of a battery according to one embodiment of the invention.

Referring to FIGS. 1A and 1B, a battery 100 includes an electrolyte therein and includes a cathode electrode and an anode electrode. The terminal for external connection of the positive electrode is the positive terminal 110, the terminal for external connection of the negative electrode is the negative terminal 120. The positive electrode terminal 110 and the negative electrode terminal 120 may be soldered by being inserted into a printed circuit board (PCB). Here, the tabs of the positive electrode terminal 110 and the negative electrode terminal 120 may be positioned in the center as shown in FIG. 1A, and may be biased to one side as shown in FIG. 1B. The pattern of the printed circuit board may vary depending on the position of the tab.

The battery 100 is a thin battery manufactured in the form of a synthetic resin coating. The battery 100 is classified according to the type of electrolyte, and may be, for example, a Li-polymer battery using a polymer electrolyte.

A battery pack is a module in which a plurality of cells 100 are connected, and is used in an apparatus requiring a higher output than a single battery output. At this time, the battery pack can be connected in series or in parallel by soldering the electrodes of the plurality of cells to the printed circuit board designed to flow the current.

2 is a view showing a battery arrangement structure according to an embodiment of the present invention, Figure 3 is a view showing a printed circuit board according to an embodiment of the present invention.

Referring to FIG. 2, the battery pack connects N cells 100 using a printed circuit board. At this time, the battery pack is arranged in the same direction as the electrode of each battery on the printed circuit board. The battery pack connects different electrodes of neighboring cells to allow current to flow. That is, the first negative terminal of the second battery (B _1), (-), the positive terminal (+) of the second cell (B ₂₎ is coupled to the second negative terminals of the battery (B ₂₎ (-) and the third cell The positive terminal (+) of (B ₃ ) is connected and sequentially connected to the N-th battery (B _N ). In this case, since the printed circuit board has a long current path connecting the negative terminal and the positive terminal of the batteries, the electrodes are connected by inserting a current pattern in the printed circuit board instead of directly connecting the electrode terminals. Here, the current pattern is a current flow path, and a pattern in which a metallic material such as copper is printed on a printed circuit board. The current pattern is insulated by applying an insulating material.

Referring to FIG. 3, the battery arrangement of FIG. 2 is implemented on the printed circuit board 20.

The printed circuit board 20 includes terminal device holes H ₁₁ , H ₁₂ , H ₂₁ , H ₂₂ , H ₃₁ , H ₃₂ , ..., H _N1 , H _N2 , and terminal device holes into which electrode terminals are fitted. Solder masks connecting the electrode terminals inserted into the lead (B ₁ +, B _1- , B ₂ +, B _2- , B ₃ +, B _3- , ..., B _N +, B _N- ) The positive electrode terminal (+) of the first battery (B-) is connected to the positive electrode of the battery pack (B +), and the negative terminal (-) of the _Nth battery (B _N ) is connected to the And a negative electrode output portion B- serving as a negative electrode. The printed circuit board 20 implements a current pattern between the solder masks to connect the electrodes. Here, the current pattern is a current flow path, and a pattern in which a metallic material such as copper is printed on a printed circuit board.

The batteries are inserted into the battery arrangement of FIG. 2 into the terminal mechanism holes H ₁₁ , H ₁₂ , H ₂₁ , H ₂₂ , H ₃₁ , H ₃₂ , ..., H _N1 , H _{N2 of the} printed circuit board 20. do. That is, the first terminal assembly holssang (H _11, H ₁₂₎ in the fitted first is is inserted electrode terminal of the second battery (B _1), opposite ends of the first battery (B ₁₎ to the terminal assembly holes (H ₁₁₎ characters, The negative terminal of the first battery B ₁ is inserted into the terminal mechanism hole H ₁₂ . Likewise, the electrode terminal of the second battery B ₂ is inserted into the second terminal device hole pair H ₂₁ and H ₂₂ , and the positive terminal of the second battery B ₂ is inserted into the terminal device hole H ₂₁ , and the terminal The negative terminal of the second battery B ₂ is fitted into the instrument hole H ₂₂ .

The electrode terminal inserted into the terminal mechanism hole of the printed circuit board 20 is bent with an adjacent solder mask, and the bent terminal is attached to the solder mask with lead. The current pattern is connected between the solder marks, and as a result, a plurality of batteries are connected in series. Here, the solder mask is a conductor surface on which an insulating material is not applied so that lead can be dissolved and bonded to a printed circuit board.

The printed circuit board 20 may further include a sensing pattern for monitoring the state of each battery.

When the plurality of batteries are arranged in the same electrode direction as described above, the printed circuit board 20 necessarily connects the electrodes in a long current pattern. Therefore, a battery pack in which a plurality of batteries are connected to the printed circuit board 20 may be used in an apparatus requiring low power.

In the following, a printed circuit board connecting a plurality of batteries will be described so that they can be used in an apparatus requiring high power.

4 is a view showing a battery arrangement structure according to another embodiment of the present invention.

Referring to FIG. 4, the battery pack 400 includes N cells 100, and the N cells B ₁ , B ₂ ,..., B _N are serially connected on the printed circuit board 200/300. Connect with The battery pack 400 arranges the batteries such that neighboring cells are reversed in electrode terminal directions. That is, the first battery negative terminal (B _1), (-) and a second battery (B ₂₎ a positive terminal (+) is adjacent, and the first battery positive terminal of (B _1), (+) and a second battery, The negative electrode terminal (-) of (B ₂ ) is disposed adjacent to each other. Similarly, the three negative electrode terminal of the positive electrode terminal (+) and the second cell (B ₂₎ of the second cell (B ₃₎ - is arranged so as to be adjacent to the ().

In addition, the battery pack 400 connects electrodes so that current flows in series from the first battery B ₁ to the last battery B _N. That is, the battery pack 400 includes a first battery (B _1), the negative terminal of the - negative terminal of the two connecting the positive terminal (+) of the second cell (B _2), and the second cell (B ₂₎ (() -) And the positive terminal (+) of the third battery (B ₃ ) are connected sequentially to the N-th battery (B _N ).

In this way, when the direction of the electrode terminals between neighboring batteries is arranged in the opposite direction in the printed circuit board 200/300, the N and the batteries of the two neighboring batteries are adjacent to each other, so that N batteries can be connected at a short distance. In addition, instead of connecting the electrodes through a separate current pattern, the electrode terminals to be connected may be directly connected through soldering or the like.

Figure 5a is a view showing a terminal mechanism hole arrangement according to an embodiment of the present invention, Figure 5b is a view showing a shield mask according to an embodiment of the present invention, Figure 5c is a printing according to an embodiment of the present invention It is a figure which shows a circuit board.

Referring to FIG. 5A, the terminal device hole arrangement 210 of the printed circuit board 200 includes a plurality of terminal device holes H ₁₁ , H ₁₂ , H ₂₁ , H ₂₂ , H ₃₁ , and H _{32 to} which electrode terminals are fitted. , ..., H _N1 , H _N2 ).

In the terminal device hole arrangement 210, two terminal device holes (eg, H ₁₁ and H ₁₂ ) into which two electrode terminals of a battery are inserted, respectively, form a terminal device hole pair, and a plurality of terminal device hole pairs are arranged side by side. The terminal device hole array unit 210 is inserted with a plurality of electrode terminals so that the electrode direction is opposite to the neighboring battery.

Referring to FIG. 5B, the shield mask unit 230 of the printed circuit board 200 includes a shield mask to which electrode terminals inserted into respective terminal device holes are connected. For example, when the positive terminal of the first battery B ₁ is inserted into the terminal mechanism hole H ₁₁ , the solder mask B ₁ +, B _1- / B ₂ +, B _2- / B ₃ +, B _3- / B ₄ +, ..., B _{N -1-} / B _N +, B _N- ). In this case, the solder mask B _1- / B ₂ + is a portion where the negative terminal of the first battery B ₁ and the positive terminal of the second battery B ₂ are connected. If the negative electrode terminal of the first battery B ₁ is inserted into the terminal mechanism hole H ₁₁ , the shield mask pattern may be designed to be opposite to the polarity of FIG. 5B.

The shield mask unit 230 connects the adjacent terminal mechanism holes in consideration of the current flow. When the printed circuit board 200 is viewed from above, for example, two terminal device holes of the terminal device hole pair are positioned up and down, and neighboring terminal device hole pairs are arranged to the left and right. In this case, the shield mask unit 230 connects the upper terminal mechanism hole (H _k 1) of the k-th terminal mechanism hole pair and the upper terminal mechanism hole (H _k-1 1) of the (k-1) th terminal mechanism hole pair. If the pattern is filled, it can be filled to connect the lower terminal mechanism hole (H _k 2) of the k-th terminal mechanism hole pair and the lower terminal mechanism hole (H _{k +1} 2) of the (k + 1) th terminal mechanism hole pair.

Referring to FIG. 5C, the printed circuit board 200 includes a plurality of terminal mechanism holes H ₁₁ , H ₁₂ , H ₂₁ , H ₂₂ , H ₃₁ , H ₃₂ ,..., H _N1 , H _N2 . terminal assembly hole array 210 of Figure 5a, the mask enters in action (Threshold) _{(B 1 +, B 1 -} / B 2 +, B 2 - / B 3 +, B 3 - / B 4 +, ..., B N - The cathode mask 230 of FIG. 5B including ₁ − / B _N + and B _N −, and the positive output of the first battery B1 connected to the positive terminal (+) of the battery pack 400 to become a positive electrode of the battery pack 400 The negative (B +) 250 and the negative electrode terminal (−) of the N-th battery (B _N ) are connected to include a negative electrode output part (B−) 260 that becomes a negative electrode of the battery pack. The printed circuit board 200 is connected to the solder mask unit 230, and outputs the sensing pattern 270 for monitoring the battery state and information obtained from the sensing pattern 270 to the outside of the printed circuit board 200. The sensing connector 280 may further include a.

The terminal device hole array unit 210 is inserted with a plurality of electrode terminals so that the electrode direction is opposite to the neighboring battery. The electrode terminal inserted into the terminal device hole arrangement part is bent in the direction of the solder mask connected to each terminal device hole and attached to the shield mask. At this time, the electrode terminal may be bent in a "b" shape.

The shield mask unit 230 connects the adjacent terminal mechanism holes in consideration of the current flow. At this time, the shield mask unit 230 is designed in consideration of the polarity of the terminal is inserted into each terminal mechanism hole. Since the electrode direction of the battery is inserted into the corresponding terminal mechanism hole, the shield mask unit 230 is designed so that neighboring batteries are connected to the positive electrode terminal and the negative electrode terminal. In this case, the solder mask unit 230 connects electrodes of neighboring batteries using lead. That is, the solder mask B _2- / B ₃ + connects two electrodes inserted into the terminal device hole H ₂ 1 and the terminal device hole H ₃ 1 with lead. The terminal assembly holes (H ₂ 1) has two negative terminal of the second cell (B ₂₎ (-) is fitted the terminal assembly holes (H ₃ 1) is inserted into the three positive terminal (+) of the second cell (B ₃₎ Lose. The solder mask unit 230 may display an indicator indicating an electrode of the battery to be inserted into the connected terminal device hole. The indicator may be a letter and, for example, may display B _2- / B ₃ + on a shield mask which connects the negative terminal of the second battery and the positive terminal of the third battery.

The positive electrode output part B + 250 is connected to a terminal device hole which is not connected to a neighbor among the terminal device hole pairs arranged at one end of the terminal device hole arrangement 210 to become a positive electrode of the battery pack. The negative electrode output part (B-) 260 is connected to a terminal device hole which is not connected to a neighbor among the terminal device hole pairs arranged at the other end of the terminal device hole arrangement part 210 to become a negative electrode of the battery pack. The positive output unit (B +) 250 and the negative output unit (B-) 260 are a kind of external lead-out terminal, and if necessary, are implemented on the printed circuit board 200 by adjusting an appropriate length and position using a current pattern. Can be.

The sensing pattern 270 is connected to the solder mask unit 230 and is a path through which a signal for acquiring information of a battery flows.

The sensing connector 280 is connected to the sensing pattern 270, and is an external output terminal for outputting information obtained by the sensing pattern 270 to the outside of the printed circuit board 200.

The printed circuit board 200 of FIGS. 5A through 5C described above may be used when the electrode tab of the battery 100 is positioned in the center of FIG. 1A. Next, a description will be given of a printed circuit board 300 that can be used when the electrode tab of the battery 100 is located at one side as shown in FIG. 1B.

Figure 6a is a view showing a terminal mechanism hole arrangement according to another embodiment of the present invention, Figure 6b is a view showing a shield mask according to another embodiment of the present invention, Figure 6c is a printing according to another embodiment of the present invention It is a figure which shows a circuit board.

Referring to FIG. 6A, the terminal device hole arrangement 310 of the printed circuit board 300 includes a plurality of terminal device holes into which electrode terminals are inserted. Since the terminal device hole arrangement 310 is a case where the electrode tab of the battery 100 is located on one side, when the cells are arranged in the opposite electrode direction of the battery 100, the two battery cells are close to the electrode tabs, and the two battery cells are close to each other. The electrode tab may be far. Therefore, when the terminal device hole arrangement 310 is connected as shown in FIG. 4, the terminal device hole arrangement unit 310 arranges the terminal device holes in consideration of the position of the electrode tab.

Referring to FIG. 6B, the solder mask 330 of the printed circuit board 300 may include a solder mask (B ₁ +, B _1- / B ₂ +, B _2-) connected to an electrode terminal inserted into each terminal device hole. , B ₃ +, B _3- / B ₄ +, ..., B _{N -1-} , B _N +, B _N- ). The shield mask 330 is disposed in consideration of the bending direction of the electrode terminal inserted into the terminal device hole arrangement 310.

Referring to FIG. 6C, the printed circuit board 300 includes a terminal device hole arrangement 310, a solder mask 330, an anode output unit B + 350, a cathode output unit B- 360, And a current pattern portion 390. The printed circuit board 300 is connected to the current pattern unit 390, and outputs the sensing pattern 370 for monitoring the battery state and information obtained from the sensing pattern 370 to the outside of the printed circuit board 300. The sensing connector 380 may be further included.

The positive electrode output part (B +) 350 is connected to an electrode terminal of a battery inserted into one end of the terminal mechanism hole arrangement 310 to become a positive electrode of the battery pack.

The negative electrode output part (B-) 360 is connected to an electrode terminal of a battery inserted into the other end of the terminal device hole arrangement part 310 to become a negative electrode of the battery pack.

The current pattern portion 390 connects the positive terminal of any battery and the negative terminal of a battery neighboring the arbitrary battery inserted into the terminal mechanism hole arrangement 310, and also the negative terminal of the arbitrary battery and the other adjacent to the arbitrary battery. The positive terminal of the battery can be connected. When the electrode terminal inserted into the terminal device hole array 310 is bent into the shield mask unit 330, the electrode terminal may be bent in the opposite direction despite being an adjacent electrode terminal. For example, the negative terminal of the battery B ₂ may be bent by the solder mask B ₂ −, and the positive terminal of the battery B ₃ may be bent by the solder mask B ₃ +. In this case, the printed circuit board 300 connects the solder mask B ₂ -and the solder mask B ₃ + in a current pattern. The printed circuit board 300 may add a current pattern if necessary.

7 is a view showing a battery pack according to an embodiment of the present invention.

Referring to FIG. 7, the battery pack 400 includes a plurality of cells 100 and a printed circuit board 300 to which electrode terminals of the plurality of cells 100 are connected. The battery pack 400 may connect the plurality of batteries 100 to the printed circuit board 200.

The battery 100 is a thin battery manufactured in the form of a synthetic resin coating, and the positive electrode terminal 110 and the negative electrode terminal 120 are drawn to the outside. The positive electrode terminal 110 and the negative electrode terminal 120 are soldered to the printed circuit board 300 and connected to the neighboring battery. The battery 100 may be a lithium polymer battery using a polymer electrolyte.

The printed circuit board 300 arranges the plurality of batteries 100 side by side to connect electrode terminals of the batteries so that current flows in series. As shown in FIG. 4, the printed circuit board 300 arranges the electrode directions of the plurality of batteries to be opposite to each other.

The printed circuit board 300 includes a terminal device hole arrangement unit 310 in which terminal device holes into which electrode terminals of a plurality of batteries are inserted are arranged, a solder mask part 330 connecting adjacent terminal device holes with lead, and terminal device hole arrangements. A positive electrode output unit 350 and a negative electrode output unit 360 connected to the terminal mechanism holes arranged at both ends of the unit 310 to output the electrode of the battery pack 400 are included. The printed circuit board 300 may connect the electrodes to the current pattern 390.

8 is a flowchart of a method of serially connecting a plurality of batteries according to an embodiment of the present invention.

Referring to FIG. 8, the battery pack 400 attaches the electrode terminals 110 and 120 of the battery 100 to the printed circuit board 200/300 to connect a plurality of cells in series. The printed circuit board 200/300 determines an electrode of a battery inserted into the terminal device hole, and designs the terminal device hole and the shield mask part so that the electrodes are connected to connect the plurality of batteries in series.

The battery pack 400 arranges the positive terminal and the negative terminal of any of a plurality of cells in the first direction on the printed circuit board 200/300 (S810). At this time, the arbitrary battery is a battery located between the both ends of the plurality of cells connected in series.

The battery pack 400 arranges each of two neighboring cells connected to an arbitrary cell in a second direction opposite to the first direction (S720). That is, the battery pack 400 arranges the plurality of cells on the printed circuit board 200/300 such that the electrode directions of the neighboring cells are reversed.

 The battery pack 400 connects a positive terminal of an arbitrary cell and a negative terminal of one of two neighboring cells, and connects a negative terminal of an arbitrary cell and a positive terminal of the remaining cells of the two neighboring cells (S730). The battery pack 400 connects the electrode terminal of an arbitrary cell and the electrode terminal of two neighboring cells with lead in the printed circuit board 200/300. In this case, the positive terminal of the battery connected to one end of the plurality of cells connected in series becomes the positive terminal of the battery pack 400, the negative terminal of the battery connected to the other end of the plurality of cells connected in series becomes the negative terminal of the battery pack 400 .

When a plurality of batteries are attached to and connected to the printed circuit board 200/300, the battery pack 400 may flow a lot of current because the current flows directly through the electrode even when the allowable current amount is large. In addition, since the battery pack 400 does not connect the electrodes in a long current pattern, the battery pack 400 provides a high output without being affected by the thickness of the battery 100. In addition, the battery pack 400 may directly connect the electrodes of the neighboring cells to lower the impedance to improve output characteristics.

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, It belongs to the scope of right.

Claims (12)

A battery pack is a method of connecting a plurality of cells in series by using a printed circuit board,
Disposing a positive electrode terminal and a negative electrode terminal of any of the plurality of cells on the printed circuit board in a first direction;
Disposing two neighboring cells connected to the arbitrary battery in a second direction opposite to the first direction, and
Connecting the positive terminal of the arbitrary battery and the negative terminal of one of the two neighboring batteries, and connecting the negative terminal of the arbitrary battery and the positive terminal of the other of the two neighboring batteries;
The optional battery is a battery pack method of connecting a plurality of cells of the battery pack is a battery located between the both ends of the plurality of cells connected in series. In claim 1,
The positive terminal of the first battery connected to one end of the plurality of cells connected in series is the positive terminal of the battery pack, the negative terminal of the second battery connected to the other end of the plurality of cells connected in series of the battery pack is the negative terminal of the battery pack How to connect multiple batteries. In claim 1,
Connecting the positive terminal of the arbitrary battery and the negative terminal of one of the two neighboring cells, and connecting the negative terminal of the arbitrary battery and the positive terminal of the other of the two neighboring cells
And connecting the electrode terminals of the arbitrary cells and the electrode terminals of the two neighboring cells with lead in the printed circuit board. A printed circuit board for connecting a plurality of batteries in series,
A terminal mechanism hole arrangement unit including a plurality of terminal mechanism holes into which the plurality of batteries are inserted in parallel, and being disposed in consideration of the position of the electrode tab;
The solder mask unit is disposed in consideration of the bending direction of the electrode terminal inserted into the terminal device hole array unit and attaches the inserted electrode terminal.
Including;
The plurality of batteries are inserted into the terminal device hole array portion such that the neighboring cells of the electrode direction is reversed. 5. The method of claim 4,
The terminal mechanism hole arrangement portion
A printed circuit board comprising a first terminal mechanism hole and a second terminal mechanism hole into which two electrode terminals of a battery are respectively inserted, forming a terminal mechanism hole pair, and arranging a plurality of terminal mechanism hole pairs side by side. The method of claim 5,
The shield mask portion
The first terminal mechanism hole of the arbitrary terminal mechanism hole pair and the first terminal mechanism hole of the terminal mechanism hole pair adjacent to the arbitrary terminal mechanism hole pair are connected to the second terminal mechanism hole of the arbitrary terminal mechanism hole pair and the arbitrary terminal mechanism hole pair. A printed circuit board for connecting second terminal device holes of adjacent pairs of terminal device holes. The method of claim 6,
The shield mask portion
A lead is connected between the positive terminal inserted into the first terminal mechanism hole of the arbitrary terminal mechanism hole pair and the negative terminal inserted into the first terminal mechanism hole of the adjacent terminal mechanism hole with lead, and the first terminal of the arbitrary terminal mechanism hole pair A printed circuit board for connecting a negative electrode terminal inserted into a two-terminal mechanism hole bent and a positive electrode terminal inserted into the second terminal mechanism hole of the other adjacent terminal mechanism hole with lead. 5. The method of claim 4,
And a current pattern unit connecting an electrode terminal of an arbitrary battery inserted into the terminal device hole arrangement unit and an electrode terminal of a battery adjacent to the arbitrary battery. 9. The method of claim 8,
The battery is a printed circuit board of which the electrode tab is biased to one side. A battery pack for connecting electrode terminals using a printed circuit board,
A plurality of cells including a positive terminal and a negative terminal, and
And a printed circuit board to which the plurality of batteries are inserted and connect adjacent electrode terminals of the plurality of batteries so that the plurality of batteries are connected in series and current flows.
The plurality of cells are battery packs arranged on the printed circuit board so that the neighboring cells to the opposite electrode direction. 11. The method of claim 10,
The printed circuit board
A battery pack for disposing the positive terminal and the negative terminal of any of a plurality of cells in a first direction, and the neighboring cells connected to the arbitrary cells in a second direction opposite to the first direction. 11. The method of claim 10,
The printed circuit board
A terminal device hole arrangement unit in which terminal device holes into which the electrode terminals of the plurality of batteries are inserted are arranged;
Solder mask for connecting adjacent terminal device holes with lead
Battery pack comprising a.

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