WO2025048016A1 - Battery pack - Google Patents

Abstract

The present invention relates to a battery pack which has a simplified configuration, and which can be easily maintained/repaired. The present invention is configured by arranging at least two battery holders (10) in parallel at equal intervals on a printed circuit board (P) and combining a battery cell (C) to each of the battery holders (10). The present invention is advantageous in that the replacement of a defective battery cell can be performed conveniently by enabling easy detachment of the battery, and by utilizing a connection port installed on a printed circuit board, the operation of the battery pack can be expanded or the balancing of the battery pack can be monitored using an external terminal, thereby improving the operational efficiency of the battery pack.

Description

BATTERY PACK

The present invention relates to a battery pack, and more specifically, to a battery pack that is easy to configure and easy to maintain.

A battery pack is designed to supply electricity of a desired specification to specific electronic equipment or machines, and a typical battery pack is composed of multiple battery cell units.

A typical battery pack is configured by arranging a plurality of battery cells (C) in parallel as illustrated in Fig. 1, positioning nickel plates on the positive (+) and negative (-) sides of the upper and lower battery cells (C), and then fixing them by a method such as spot welding. The output electricity (+, -) of a parallel battery pack configured as described above is configured to be output to a battery management system (BMS) or a battery safety circuit (PCM; Protection Circuit Module).

The above-mentioned conventional battery pack has the advantage of being easy to arrange and configure battery cells, and is widely used because it can be manufactured at low production costs by using basic parts.

Conventional battery packs are made by arranging multiple battery cells in parallel and then fixing them together using nickel plates. If one of the battery cells constituting the battery pack is defective, problems may occur with the overall performance (output) of the battery pack. In addition, not only may the set voltage value not be obtained due to the defective battery cell, but other connected battery cells may be overcharged during the charging process, and when discharging, multiple connected battery cells may discharge rapidly, making it difficult to maintain the set characteristics of the battery pack.

In addition, it was pointed out that it was difficult to identify which battery cell in the battery pack was defective, and that it was difficult to replace the defective battery cell because it was fixed by welding.

The present invention was created to solve the problems of the conventional battery pack as described above, and to provide a battery pack that is easy to implement by arranging a plurality of holders on a printed circuit board so that the battery cells coupled to each holder are electrically connected by pattern-printed electric conductors, and at the same time, each battery cell can be easily removed and inserted, so that the replacement of a defective battery cell can be easily performed, and by enabling the expanded operation of the battery pack by utilizing the connection port installed on the printed circuit board or enabling the balancing of the battery pack to be detected by utilizing an external terminal, thereby improving the output and operating efficiency of the battery pack.

In order to solve the above technical problem, the present invention comprises a battery pack in which at least two or more battery holders are arranged in parallel with equal spacing on one or both sides of a printed circuit board, wherein the battery holders are provided with a negative terminal and a positive terminal at each end of a support plate for fixing them on the printed circuit board, and a set of semicircular clamping plates having an inner diameter capable of accommodating an outer diameter of a battery cell are mutually installed on the upper surface of each support plate so as to correspond to each other, so that an introduction opening is formed in the upper area between each clamping plate for introducing a battery cell, and each battery holder is configured to maintain a current-conducting state by the electric conductor by connecting the negative terminal provided on the front clamp of an adjacent battery holder and the positive terminal provided on the rear clamp with an electric conductor printed as a pattern on the printed circuit board, and combining the battery cell to the clamp of each battery holder, and wherein the printed circuit board of The technical feature is that an output port is installed on one side and is connected to an electric conductor that connects the negative terminal and the positive terminal of the battery holder, so that the power of each battery cell is output through the output port.

The battery pack proposed in the present invention can be implemented by combining battery cells into a plurality of holders arranged on a printed circuit board (PCB), and not only can the combined state of the battery cells be firmly maintained, but also a short phenomenon can be prevented and damage to the battery cells due to overheating can be prevented.

The present invention is a simple process for easily implementing a series or parallel type battery pack by inserting and connecting battery cells into a plurality of holders installed on a printed circuit board, thereby allowing easy attachment and detachment of battery cells, facilitating the replacement of defective battery cells, and enabling expanded operation of the battery pack by utilizing a connection port installed on a printed circuit board, or enabling the balancing of the battery pack to be detected using an external terminal, thereby improving the operational efficiency of the battery pack, and thus the present invention is a truly beneficial invention in terms of its expected effects.

Figure 1 is a reference diagram for explaining the configuration of a conventional battery pack.

FIG. 2 is a reference perspective view illustrating a preferred embodiment of a battery pack proposed in the present invention.

Figure 3 is a reference perspective view of a printed circuit board according to the present invention.

Figures 4 [A] and [B] are printed circuit configuration diagrams of a battery pack proposed in the present invention.

FIG. 5 is a reference perspective view illustrating another embodiment of a printed circuit board according to the present invention.

Figures 6 [A] and [B] are reference cross-sectional views for explaining the configuration and operational relationship of the clamp according to the present invention.

FIG. 7 is a reference cross-sectional view illustrating another embodiment of a clamp according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the attached drawings. First, it should be noted that in the description of the drawings, the same components or parts are indicated by the same reference numerals as much as possible. In addition, in explaining the present invention, in order to avoid ambiguity in the gist of the technical idea to be enjoyed by the present invention, specific descriptions of related known functions or configurations have been omitted.

FIG. 2 is a perspective view illustrating a preferred embodiment of a battery pack (B/P) proposed in the present invention. As shown in the drawing, it can be confirmed that the battery pack (B/P) is configured by arranging at least two battery holders (10) in parallel while maintaining equal spacing on a printed circuit board (P).

A reference perspective view of a printed circuit board (P) according to the present invention is illustrated in FIG. 3. As illustrated, a battery holder (10) placed on the printed circuit board (P) is composed of front and rear clamps (11a, 11b) capable of fixing a battery cell (C).

The front and rear clamps (11a, 11b) are provided with support plates (12a, 12b) for fixing them on a printed circuit board (P), and a negative terminal (14a) and a positive terminal (14b) are respectively formed at the ends of the support plates (12a, 12b), and a set of semicircular clamping plates (13a, 13b) having an inner diameter that can accommodate the outer diameter of a battery cell (C) are installed correspondingly on the upper surfaces of each of the support plates (12a, 12b), so that an introduction opening (15a, 15b) into which a battery cell (C) can be introduced is formed in the upper region between each of the clamping plates (13a, 13b).

Each of the above battery holders (10) is configured to connect a negative terminal (14a) provided on a front clamp (11a) of an adjacent battery holder (10) and a positive terminal (14b) provided on a rear clamp (11b) with an electric conductor (20) printed as a pattern on a printed circuit board (P), and to connect a battery cell (C) to the clamp (11a, 11b) of each battery holder (10) so that each battery cell (C) maintains a current-conducting state by the electric conductor (20).

The printed circuit configuration of the battery pack (B/P) proposed in the present invention is illustrated in FIG. 4 [A] and [B]. As illustrated, when printing an electric conductor (20) on a printed circuit board (P), the electric conductor (20) may be configured to connect the negative terminal (14a) and the positive terminal (14b) of the neighboring battery holder (10) so that the battery cells (C) coupled to each battery holder (10) maintain a series current-carrying state (see FIG. 4 [A]). If necessary, when printing an electric conductor (20) on a printed circuit board (P), the electric conductor (20) may be configured to connect the negative terminal (14a) and the negative terminal (14a) and the positive terminal (14b) and the positive terminal (14b) of the neighboring battery holder (10), so that the battery cells (C) coupled to each battery holder (10) maintain a parallel current-carrying state. (See Fig. 4 [B])

FIG. 5 is a perspective view illustrating another embodiment of a printed circuit board (P) according to the present invention. As illustrated, a battery holder (10) having the configuration described above may be installed on one side of the printed circuit board (P), and a battery holder (10) having the same configuration as the battery holder (10) may be installed on the other side of the printed circuit board (P).

By configuring a printed circuit board (P) as described above, a high-capacity battery pack (B/P) can be implemented using a printed circuit board (P) with limited conditions.

The clamps (11a, 11b) according to the present invention are formed of an elastic metal material, and when a battery cell (C) is inserted through the inlet openings (15a, 15b) between the clamps (11a, 11b), the inlet openings (15a, 15b) are elastically opened, and when the battery cell (C) is positioned inside the clamps (11a, 11b), the battery cell (C) is coupled and fixed to the inner wall of the clamps (11a, 11b) by the elastic force (restoration force) of the clamps (11a, 11b). (See Fig. 6)

An output port (40) connected to a battery cell (C) is installed on one side of the above printed circuit board (P), so that the output electricity of the battery cell connected to the electric conductor (20) can be output to the outside through the output port (40).

A connection port (30) connected to a battery cell (C) and an output port (40) is installed on one side of the above printed circuit board (P), so that an external terminal capable of detecting the balancing of the battery cell (C) can be connected through a connection cable or PCB, or a combined connection with another battery pack (B/P) is possible.

A reference cross-sectional view illustrating another embodiment of a clamp (11a, 11b) according to the present invention is illustrated in FIG. 7. As illustrated, the clamping plates (13a, 13b) of the clamps (11a, 11b) can be configured by covering them with an insulating coating (16a, 16b) made of an insulating resin material.

By configuring the clamps (11a, 11b) as described above, the detachment of the battery cell (C) interposed between the clamps (11a, 11b) can be prevented, short circuit of the battery cell (C) can be prevented by the insulating coating (16a, 16b), and surface damage of the battery cell (C) due to heating of the clamps (11a, 11b) can be prevented.

The present invention, having the above configuration, outputs electricity from each battery cell coupled to a plurality of holders (10) arranged on a printed circuit board (P) and outputs it to the outside through an output port (40) via an electric conductor (20) pattern-printed on the printed circuit board (P) or to a battery management system (BMS) or a battery safety circuit (PCM; Protection Circuit Module).

The battery pack proposed in the present invention is not limited to the above-described embodiments and the attached drawings, etc., and can be substituted, modified, and changed in various forms within a scope that does not depart from the scope of the technical idea intended to be enjoyed by the present invention, which will be apparent to those skilled in the art in the technical field to which the present invention pertains.

The present invention enables the implementation of a battery pack (B/P) by a simple process of combining a battery cell (C) with a holder (10), thereby facilitating the construction of a battery pack (B/P) and facilitating the removal and installation of a battery cell (C), thereby facilitating the replacement of a defective battery cell, and enabling combined operation with another battery pack (B/P) by utilizing a connection port (30) installed on a printed circuit board (P), or enabling the balancing of the battery pack (B/P) to be detected by utilizing an external terminal, thereby improving the operational efficiency of the battery pack.

Claims (4)

In configuring a battery pack (B/P) by arranging at least two battery holders (10) in parallel with equal spacing on one or both sides of a printed circuit board (P), The above battery holder (10) is configured with front and rear clamps (11a, 11b) in which a negative terminal (14a) and a positive terminal (14b) are respectively provided at the ends of support plates (12a, 12b) for fixing onto a printed circuit board (P), and a set of semicircular clamping plates (13a, 13b) having an inner diameter capable of accommodating the outer diameter of a battery cell (C) are mutually installed on the upper surfaces of each support plate (12a, 12b) so that an inlet opening (15a, 15b) for introducing a battery cell (C) is formed in the upper area between each clamping plate (13a, 13b). Each of the above battery holders (10) is configured to connect a negative terminal (14a) provided on a front clamp (11a) of an adjacent battery holder (10) and a positive terminal (14b) provided on a rear clamp (11b) with an electric conductor (20) printed as a pattern on a printed circuit board (P), and to connect a battery cell (C) to the clamp (11a, 11b) of each battery holder (10) so that each battery cell (C) maintains a current-conducting state by the electric conductor (20). A battery pack characterized in that an output port (40) is installed on one side of the printed circuit board (P) and is connected to an electric conductor (20) that connects the negative terminal (14a) and the positive terminal (14b) of the battery holder (10), so that the power of each battery cell (C) is output through the output port (40). In the first paragraph; A battery pack characterized in that the electric conductor (20) printed on the above printed circuit board (P) connects the negative terminal (14a) and the positive terminal (14b) of the neighboring battery holder (10) so that the battery cells (C) connected to each battery holder (10) maintain a serial current-conducting state. In the first paragraph; A battery pack characterized in that the electric conductor (20) printed on the above printed circuit board (P) connects the negative terminal (14a) and the negative terminal (14a) and the positive terminal (14b) and the positive terminal (14b) of the neighboring battery holder (10), so that the battery cells (C) coupled to each battery holder (10) maintain a parallel current-carrying state. In the first paragraph; A battery pack characterized in that the clamping plates (13a, 13b) of the above clamps (11a, 11b) are covered with an insulating coating (16a, 16b) made of an insulating resin material to prevent detachment of the battery cell (C) and to prevent short circuiting of the battery cell (C).

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