Battery pack output system and battery pack used in same

Abstract

The present invention relates to: a battery pack output system that makes it possible to efficiently control the battery cell arrangement and output of a battery pack in which a plurality of individual battery cells are used in combination; and a battery pack used in the output system. The present invention includes at least one battery pack (B / P) configured by connecting a plurality of battery cells (C) in series. The electricity output by the battery cells (C) constituting the battery pack (B / P) is supplied to a battery management system (BMS) or a battery safety circuit (protection circuit module; PCM) via an electrical conductor pattern-printed on a printed circuit board (PCB; P). The electricity output from each of the battery cells (C) passes through a battery cell voltage selection circuit (B / S). The battery cell voltage selection circuit (B / S) measures the output voltage of each of the battery cells (C) constituting the battery pack (B / P) and transmits the measured voltage value to the battery management system (BMS). The present invention has the effects that the battery pack output system can be easily constructed, the output of the battery pack can be easily managed, and the operation efficiency of the battery pack can be improved.

Description

Battery pack output system and battery pack used in the above output system

[0001] The present invention relates to a battery pack output system and a battery pack used in the above output system, and more specifically, to a battery pack output system invented to efficiently control the arrangement and output of battery cells of a battery pack that uses a combination of multiple batteries in cell units, and to provide a battery pack used in the above output system.

[0002] 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 cell-unit batteries.

[0003] A typical battery pack is configured by arranging multiple battery cells (C) in parallel as shown in Fig. 1, positioning nickel plates on the positive (+) and negative (-) sides of the upper and lower portions of the battery cells (C), and then fixing them by a method such as spot welding. The output electricity (+, -) of the 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).

[0004] 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 components.

[0005] Conventional battery packs consist of multiple battery cells arranged in parallel and fixed 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.

[0006] In addition, it was pointed out that it was difficult to determine 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.

[0007] The present invention was created to solve the problems in the operation of the conventional battery pack as described above, and by arranging a plurality of holders on a printed circuit board and connecting battery cells in series to each holder by a pattern-printed electric conductor, it is easy to implement a series-type battery pack, and at the same time, it is easy to perform the removal and installation of battery cells, so that the replacement of defective battery cells can be easily performed, and by enabling parallel operation of the battery pack using a connection port installed on the printed circuit board or enabling the balancing of the battery pack to be detected using an external terminal, it is possible to improve the output and operation efficiency of the battery pack, and it is intended to provide a battery pack output system and a battery pack used in the above output system, which are invented with a focus on the technical task.

[0008] The present invention for solving the above technical problem is characterized in that it comprises at least one battery pack configured by connecting a plurality of battery cells in series, and the output electricity of the battery cells constituting the battery pack is output to a battery management system (BMS) or a battery safety circuit (Protection Circuit Module) via an electric conductor pattern-printed on a printed circuit board (PCB), and the electricity output from each battery cell is configured to pass through a battery cell voltage selection circuit, so that the battery cell voltage selection circuit measures the output voltage of each battery cell constituting the battery pack and transmits the measured voltage value to the BMS.

[0009] The battery pack output system proposed in the present invention is configured such that battery cells connected to a plurality of holders arranged on a printed circuit board (PCB) output electricity in a serial connection state by means of electric conductors pattern-printed on the printed circuit board, and output the electricity to a battery management system (BMS) or a battery safety circuit (PCM), thereby enabling the balancing of the battery pack to be detected using an external terminal and, by using an on-off switch, enabling the battery cells of neighboring battery packs to be connected in parallel with each other, enabling the balancing detection and performance measurement of each battery pack and the battery cells connected thereto.

[0010] According to the present invention, not only is it easy to construct a battery pack output system, but it is also possible to easily manage the output of the battery pack and improve the operating efficiency of the battery pack.

[0011] In addition, the battery pack proposed in the present invention can easily implement a series-type battery pack by a simple process of inserting and connecting battery cells into a plurality of holders installed on a printed circuit board, thereby enabling easy installation and removal of battery cells, thereby facilitating the replacement of defective battery cells, and enabling parallel operation of the battery pack by utilizing a connection port installed on the printed circuit board or enabling balancing of the battery pack to be detected using an external terminal, thereby improving the operating efficiency of the battery pack, and thus the present invention is a truly beneficial invention in terms of its expected effects.

[0012] Figure 1 is a configuration diagram of a conventional battery pack and battery pack output system.

[0013] Figure 2 is a configuration diagram of a battery pack output system proposed in the present invention.

[0014] Figure 3 is a configuration diagram according to another embodiment of the battery pack output system proposed in the present invention.

[0015] Figure 4 is a reference perspective view showing a preferred embodiment of a battery pack proposed in the present invention.

[0016] Figure 5 is a reference perspective view of a printed circuit board according to the present invention.

[0017] 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.

[0018] Fig. 7 is a reference cross-sectional view showing another embodiment of a clamp according to the present invention.

[0019] Figure 8 is a reference perspective view showing another embodiment of a printed circuit board according to the present invention.

[0020] The present invention will now be described in detail with reference to the attached drawings. First, it should be noted that, where possible, identical components or parts are designated by identical reference numerals throughout the drawings. Furthermore, in describing the present invention, specific descriptions of related, publicly known functions or configurations have been omitted to avoid obscuring the gist of the technical concepts sought to be embraced by the present invention.

[0021] FIG. 2 illustrates a configuration of a battery pack output system proposed in the present invention. As illustrated, the present invention comprises at least one battery pack (B / P) configured by connecting a plurality of battery cells (C) in series, so that the output electricity of the battery cells (C) constituting the battery pack (B / P) is output to a battery management system (BMS) or a battery safety circuit (PCM; Protection Circuit Module) via an electric conductor pattern-printed on a printed circuit board (P), and it can be confirmed that the electricity output from each battery cell (C) is configured to pass through a battery cell voltage selection circuit (B / S), so that the battery cell voltage selection circuit (B / S) measures the output voltage of each battery cell (C) constituting the battery pack (B / P) and transmits the measured voltage value of a specific battery cell (C) to the battery management system (BMS) upon request of the battery management system (BMS).

[0022] FIG. 3 illustrates a configuration diagram according to another embodiment of a battery pack output system proposed in the present invention. As illustrated, an on-off switch (S) is installed in each battery pack (B / P) to connect battery cells (C) of neighboring battery packs (B / P) in parallel, so that the battery cells (C) of neighboring battery packs (B / P) can be connected in parallel or disconnected depending on the operation of the on-off switch (S), and a resistance circuit is installed in an electric conductor connecting a battery cell voltage selection circuit (B / S) and a battery management system (BMS) or a battery safety circuit (PCM; Protection Circuit Module), so that a pattern of a printed circuit board is protected by the resistance circuit.

[0023] The present invention having the above configuration is configured such that battery cells (battery-cells) connected to a plurality of holders arranged on a printed circuit board (PCB) output electricity in a serial connection state by means of electric conductors pattern-printed on the printed circuit board and output it to a battery management system (BMS) or a battery safety circuit (PCM), thereby facilitating the construction of a battery pack output system and facilitating the output management of the battery pack. In addition, a battery cell voltage selection circuit (B / S) measures the output voltage of each battery cell (C) constituting the battery pack (B / P) and transmits the measured voltage value to the battery management system (BMS), thereby enabling the battery cell (C) to be checked for abnormalities at any time, thereby improving the operating efficiency of the battery pack.

[0024] A reference perspective view showing a preferred embodiment of a battery pack (B / P) proposed in the present invention is shown in FIG. 4. Through the drawing, it can be confirmed that the battery pack (B / P) of the present invention is configured by arranging at least two battery holders (10) in parallel at equal intervals on a printed circuit board (P).

[0025] A reference perspective view of a printed circuit board according to the present invention is illustrated in FIG. 5. As illustrated, a battery holder (10) placed on a printed circuit board (P) is provided with a negative terminal (14a) and a positive terminal (14b) at the ends of support plates (12a, 12b) for fixing the battery holder on the printed circuit board (P), and a pair of semicircular clamping plates (13a, 13b) having an inner diameter capable of accommodating the outer diameter of a battery cell (C) are installed on the upper surfaces of each support plate (12a, 12b) in correspondence with each other, so that an inlet opening (15a, 15b) for inserting the battery cell (C) is formed in the upper region between each clamping plate (13a, 13b).

[0026] Each of the above battery holders (10) is configured to maintain a series current state by connecting the negative terminal (14a) and the positive terminal (14b) of the neighboring battery holder (10) with an electric conductor (20) printed in a pattern on a printed circuit board (P), and by connecting the battery cells (C) through the inlet openings (15a, 15b) provided in the clamps (11a, 11b) of each of the above-described battery holders (10), each battery cell (C) is configured to be in a series connection state by the electric conductor (20).

[0027] The above clamps (11a, 11b) 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)

[0028] An output port (50) connected to a battery cell (C) is installed on one side of the above printed circuit board (P), so that power of the battery cells connected in series can be output to the outside through the output port (50).

[0029] A connection port (30) connected to a battery cell (C) and an output port (50) is installed on one side of the 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 so that parallel connection with another battery pack (B / P) is possible, and a resistance circuit port (40) through which an electric conductor through which power of the battery cell (C) is output is installed on one side of the printed circuit board (P), so that the pattern of the printed circuit board (P) can be protected by the resistance circuit connected to the resistance circuit port (40), and at the same time, the configuration of a battery management system (BMS) that manages the output power of the battery pack (B / P) can be simplified.

[0030] A reference cross-sectional view showing another embodiment of a clamp (11a, 11b) according to the present invention is shown in Fig. 7. As shown, 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.

[0031] By configuring the clamps (11a, 11b) as described above, the battery cell (C) interposed between the clamps (11a, 11b) can be prevented from coming off, the short circuit of the battery cell (C) can be prevented by the insulating coating (16a, 16b), and the surface damage of the battery cell (C) due to heating of the clamps (11a, 11b) can be prevented.

[0032] FIG. 8 is a perspective view illustrating another embodiment of a printed circuit board (P) according to the present invention. As shown, a battery holder (10) having the configuration described above is installed on one side of the printed circuit board (P), and a battery holder (10) having the same configuration as the battery holder (10) is installed on the other side of the printed circuit board (P).

[0033] 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.

[0034] The present invention, having the above configuration, outputs electricity from battery cells (battery-cells) connected in series to a plurality of holders (10) arranged on a printed circuit board (P) to a battery management system (BMS) or a battery safety circuit (PCM; Protection Circuit Module) by an electric conductor (20) pattern-printed on the printed circuit board (P).

[0035] The battery pack output system and battery pack, etc. presented in the present invention are not limited to the above-described embodiments and 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 a person having ordinary skill in the technical field to which the present invention pertains.

[0036] The battery pack output system proposed in the present invention is configured to be able to connect or disconnect battery cells (C) of neighboring battery packs (B / P) in parallel, thereby enabling balancing of battery cells (C) or performance measurement of battery cells (C) through parallel connection of battery cells (C).

[0037] The present invention can implement a battery pack (B / P) by a simple process of connecting a battery cell (C) to a holder (10), so that not only is the construction of the battery pack (B / P) easy, but also the battery cell (C) can be easily removed, so that the replacement of a defective battery cell can be easily performed, and the parallel operation of the battery pack (B / P) can be enabled by utilizing a connection port (30) installed on a printed circuit board (P), or the balancing of the battery pack (B / P) can be detected by utilizing an external terminal, thereby improving the operating efficiency of the battery pack.

Claims

1. In configuring at least one battery pack (B / P) configured by connecting multiple battery cells (C) in series, such that the output electricity of the battery cells (C) constituting the battery pack (B / P) is output to a Battery Management System (BMS) or a Battery Protection Circuit Module (PCM) via an electric conductor pattern printed on a Printed Circuit Board (P). A battery pack output system characterized by the fact that the electricity output from each of the above-mentioned battery cells (C) is configured to pass through a battery cell voltage selection circuit (B / S), and the battery cell voltage selection circuit (B / S) measures the output voltage of each battery cell (C) constituting the battery pack (B / P) and transmits the measured voltage value to the above-mentioned battery management system (BMS).

2. In paragraph 1; A switch (S) is installed in each of the above battery packs (B / P) to connect the battery cells (C) of adjacent battery packs (B / P) in parallel, so that the battery cells (C) of adjacent battery packs (B / P) can be connected or disconnected in parallel depending on the operation of the switch (S). A battery pack output system characterized by installing a resistance circuit (R) in an electrical conductor that links the above-mentioned battery cell voltage selection circuit (B / S) and a battery management system (BMS) or a battery protection circuit module (PCM), so that the pattern of the printed circuit board is protected by the resistance circuit (R).

3. In configuring a battery pack (B / P) by arranging at least two battery holders (10) side by side at equal intervals on one or both sides of a printed circuit board (P), The battery holder (10) is configured with front and rear clamps (11a, 11b) having a negative terminal (14a) and a positive terminal (14b) respectively provided at the ends of support plates (12a, 12b) for fixing on a printed circuit board (P), and a pair of semicircular clamping plates (13a, 13b) having an inner diameter capable of accommodating the outer diameter of a battery cell (C) are installed in a mutually corresponding manner on the upper surface of each support plate (12a, 12b), so that an insertion opening (15a, 15b) capable of inserting a battery cell (C) is formed in the upper region between each clamping plate (13a, 13b). Each of the above battery holders (10) is configured such that the negative terminal (14a) and positive terminal (14b) of an adjacent battery holder (10) are connected by an electric conductor (20) printed as a pattern on a printed circuit board (P) so that each battery holder (10) maintains a series current state. By connecting the battery cells (C) to the clamps (11a, 11b) of each battery holder (10) configured above, each battery cell (C) is configured to be connected in series by an electric conductor (20). A battery pack characterized by having an output port (50) connected to a battery cell (C) installed on one side of the printed circuit board (P), so that the power of each battery cell (C) connected in series can be output through the output port (50).

4. In Paragraph 3; A battery pack characterized by being configured such that a connection port (30) connected to a battery cell (C) and an output port (50) is installed on one side of the printed circuit board (P) to enable the connection of an external terminal capable of detecting the balancing of the battery cell (C) via a connection cable or to enable parallel connection with another battery pack (B / P), and a resistance circuit port (40) through which an electrical conductor through which the power of the battery cell (C) is output is installed on one side of the printed circuit board (P) to enable the pattern of the printed circuit board (P) to be protected by a resistance circuit connected to the resistance circuit port (40), and also to simplify the configuration of a battery management system (BMS) that manages the output power of the battery pack (B / P).

5. In Paragraph 3; A battery pack characterized by being configured such that the clamping plates (13a, 13b) of the clamps (11a, 11b) are covered with an insulating coating (16a, 16b) made of an insulating resin material to prevent the battery cell (C) from detaching and to prevent a short circuit of the battery cell (C).

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