KR-20260067323-A - ELECTRICITY STORAGE DEVICE

KR20260067323AKR 20260067323 AKR20260067323 AKR 20260067323AKR-20260067323-A

Abstract

The temperature detection unit includes a first temperature detection part positioned on the first direction side relative to the center of the module, and a second temperature detection part positioned on the second direction side relative to the center of the module. A first detection connector is positioned on the first direction side relative to the module body and is electrically connected to the first temperature detection part. A second detection connector is positioned on the second direction side relative to the module body and is electrically connected to the second temperature detection part.

Inventors

사카시타 게이스케

Assignees

도요타지도샤가부시키가이샤

Dates

Publication Date: 20260512
Application Date: 20251028
Priority Date: 20241105

Claims (5)

A cell module comprising a plurality of capacitor cells arranged in an array direction, and A bus bar module electrically connected to the above cell module, and A temperature detection unit and, The cell module comprises at least one detection module that is electrically connected to the temperature detection unit and disposed at one end of the arrangement direction. The direction that intersects with the above arrangement direction is called the intersection direction, and One direction of the above intersection is called the first direction, and If the other direction of the above intersection is called the second direction, The above bus bar module is, In the cell module above, a plurality of first bus bars positioned on the first direction side rather than the module center located at the center of the intersection direction, and It includes a plurality of second bus bars positioned on the second direction side rather than the center of the module, and The above temperature detection unit is, A first temperature detection unit positioned on the first direction side rather than the center of the module and capable of detecting the temperature of at least one of the plurality of first bus bars, and It includes a second temperature detection unit positioned on the second direction side rather than the center of the module and capable of detecting the temperature of at least one of the plurality of second bus bars, The above detection module includes a module body, a first detection connector and a second detection connector connected to the module body, and The first detection connector is electrically connected to the first temperature detection unit and is positioned on the first direction side with respect to the module body, and The above second detection connector is electrically connected to the above second temperature detection unit and is a capacitor device disposed on the second direction side with respect to the module body.
In paragraph 1, The above module body is a capacitor device positioned at a location overlapping with the cell module in the above arrangement direction.
In paragraph 1 or 2, The above-mentioned at least one detection module is, A first detection module disposed on one side of the array direction with respect to the cell module, and It includes a second detection module disposed on the other side of the array direction with respect to the cell module above, and The first detection connector of the first detection module is electrically connected to the first temperature detection part disposed on one side rather than a predetermined position in the arrangement direction, and The second detection connector of the first detection module is electrically connected to the second temperature detection part positioned on one side of the predetermined position in the arrangement direction, and The first detection connector of the second detection module is electrically connected to the first temperature detection part positioned on the other side of the predetermined position in the arrangement direction, and A capacitor device in which the second detection connector of the second detection module is electrically connected to the second temperature detection part positioned on the other side of the predetermined position in the arrangement direction.
In paragraph 1 or 2, The above bus bar module is, A first bus bar connector connected to the first detection connector, and A first printed circuit board having a first wiring formed thereon that electrically connects the first bus bar and the first bus bar connector, and A second bus bar connector connected to the second detection connector, and It includes a second printed circuit board having a second wiring formed thereon that electrically connects the second bus bar and the second bus bar connector, and The above cell module is, The first side of the first direction side in the above-mentioned intersection direction, and It includes a second side of the second direction side in the above-mentioned intersection direction, The first printed circuit board is positioned opposite to the first side, and The above second printed circuit board is a capacitor device positioned opposite to the above second side.
In paragraph 1 or 2, The first detection connector above includes a first detection pin for temperature detection, and The second detection connector above includes a second detection pin for temperature detection, and A capacitor device in which the number of the first detection pins and the number of the second detection pins are each greater than or equal to the sum of the number of the first bus bar whose temperature is detected by the first temperature detection unit and the number of the second bus bar whose temperature is detected by the second temperature detection unit.

Description

Energy Storage Device The present disclosure relates to a storage device. Japanese Patent Publication No. 2024-085194 discloses a secondary battery comprising a plurality of battery cells arranged therein. The secondary battery comprises a bus bar connecting the positive electrodes at one end of each battery cell and the negative electrodes at the other end of each battery cell. A temperature detection unit, which is a sensor for detecting the temperature of the bus bar, is disposed on the bus bar. A signal from the temperature detection unit disposed on each bus bar is transmitted through a flexible substrate to a connector provided on the outside of the flexible substrate. FIG. 1 is a perspective view showing the configuration of a capacitor device according to the present embodiment. Figure 2 is a plan view showing the detailed configuration of a capacitor. Figure 3 is a partial enlarged view showing the cell module and detection module of Figure 2. Figure 4 is a partial enlarged view showing the configuration near the detection module of Figure 2. Figure 5 is a diagram showing the pin arrangement of the detection connector on the X1 side. Figure 6 is a diagram showing the pin arrangement of the detection connector on the X2 side. Embodiments of the present disclosure will be described with reference to the drawings. In addition, in the drawings referenced below, identical or equivalent components are given the same number. FIG. 1 is a diagram showing the configuration of a battery storage device (100) according to the present embodiment. The battery storage device (100) is mounted on, for example, a vehicle (not shown). The vehicle may be a PHEV (Plug-in Hybrid Electric Vehicle), a BEV (Battery Electric Vehicle), and an FCEV (Fuel Cell Electric Vehicle), etc. Furthermore, the use of the battery storage device (100) is not limited to vehicle use. In this specification, the X direction, the Y direction, and the Z direction are mutually orthogonal directions. For example, the X direction may be the front-rear direction of the vehicle when the battery device (100) is mounted on the vehicle. Also, the Y direction may be the left-right direction of the vehicle when the battery device (100) is mounted on the vehicle. Also, the Z direction may be the up-down direction when the battery device (100) is mounted on the vehicle. For example, the Z1 direction and the Z2 direction may be the up and down directions, respectively. Also, the X direction may be the left-right direction and the Y direction may be the front-rear direction. Also, the X direction and the Y direction are each examples of the "intersecting direction" and "arrangement direction" of this disclosure. The storage device (100) comprises a cell module (10), a bus bar module (20), a bus bar module (30), and a detection module (40). Each of the bus bar module (20) and the bus bar module (30) is electrically connected to the cell module (10). A cell module (10) includes a side (first side) (1) and a side (second side) (2). Side (1) is a side of the X1 side of the cell module (10). Side (2) is a side of the X2 side of the cell module (10). The X1 side and the X2 side are, respectively, a side of one direction and a side of the other direction in the X direction. Additionally, the X1 direction and the X2 direction are, respectively, examples of the “first direction” and “second direction” of the present disclosure. Additionally, side (1) and side (2) are, respectively, examples of the “first side” and “second side” of the present disclosure. The bus bar module (20) is positioned on the X1 side of the module center (3) (indicated by a dashed line in FIG. 1), which is located in the center of the X direction of the cell module (10). The bus bar module (30) is positioned on the X2 side of the module center (3). The bus bar module (20) includes a printed circuit board (first printed circuit board) (21), two bus bar connectors (first bus bar connectors) (22), and a plurality of bus bars (first bus bars) (23) (Fig. 2). Additionally, the printed circuit board (21) and the bus bar connectors (22) are each examples of the “first printed circuit board” and “first bus bar connectors” of the present disclosure. Additionally, the bus bar (23) is an example of the “first bus bar” of the present disclosure. The printed circuit board (21) is positioned opposite the side (1) of the cell module (10). Specifically, the printed circuit board (21) and the side (1) are opposite in the X direction. Additionally, each of the printed circuit board (21) and the side (1) intersects (orthogonally) with the X direction. One of the two bus bar connectors (22) and the other are each positioned at the end on the Y1 side and the end on the Y2 side of the printed circuit board (21). The bus bar connector (22) on the Y1 side is located on the Y1 side of the end on the Y1 side (one end) (4) of the cell module (10). The bus bar connector (22) on the Y2 side is located on the Y2 side of the e