TWI643381B - Battery device having anti-fire spreading structure - Google Patents

Abstract

The invention provides a battery device with an anti-heating structure, comprising a plurality of battery cells and a multi-layer housing frame, wherein the battery cells are connected to each other in series or in parallel and arranged in a casing frame of each layer; the battery cells are respectively disposed at In a fireproof sleeve, and the battery cells in each layer of the housing frame are respectively blocked by a fireproof passage. Further, a conductive metal surface is disposed on the housing frame, and an electrode end of each battery core is respectively configured via an upwardly bent fuse. The conductive metal surface is connected. Here, the design of one or more anti-heating structures can reduce the probability of battery core burning and increase the safety of the battery device.

Description

Battery device with anti-heating structure

The invention relates to a battery device, in particular to a battery device with an anti-heating structure.

The battery core has the function of storing electric energy, and the plurality of battery cells are connected in series or in parallel to form a battery device, which can be used as a power supply source of the machine, for example, as a power supply source for the electric vehicle.

Since the output of the battery device is an instantaneous large current, the battery core is prone to high temperature, and the service life of the battery core is greatly shortened. Moreover, when the battery core is subjected to an external force, it may also cause a high-heat flame to be ejected, and the high-heat flame will be burned to other battery cells, causing an explosion of the battery device.

In order to prevent the battery core from being fired and burned, in the past, the inner frame and the outer casing of the battery device are often made of a material having a higher hardness or a filler material, thereby increasing the packaging strength of the battery device and reducing the probability of the battery core being burned. However, a material having a higher hardness or a filler material tends to increase the manufacturing cost and weight of the battery device, which is very disadvantageous in terms of unit price and use of the battery device.

In view of the above, the present invention will provide an innovative battery device whose battery device is designed by one or more anti-heating structures, which not only reduces the probability of battery core burning, but also increases the safety of the battery device, and does not need It would be an object of the present invention to increase the production cost so that the unit cost of the battery unit can be relatively low.

An object of the present invention is to provide a battery device comprising a multi-layer housing frame and a plurality of battery cells, wherein the battery cells are connected to each other in series or in parallel and are respectively arranged in each layer of the housing frame in the housing frame. Providing at least one fireproof passage, the battery cells in each shell frame are separated from the battery cells of the upper layer or the battery cells of the next layer via the fireproof passage, and when one of the battery cores is damaged to generate a fire, the fireproof passage can be Blocking function to prevent the smoke, heat or flame formed by the damaged battery core from being conducted to the upper cell or the next cell, and guiding the smoke, heat or flame formed by the damaged cell to The exterior of the housing frame reduces the chance of a burn.

An object of the present invention is to provide a battery device in which a battery cell of a battery device is disposed in a fireproof sleeve and covered by a fireproof sleeve, and each battery cell is respectively connected to an adjacent battery via a fireproof sleeve. The core is blocked. When the battery core is damaged and the fire is generated, the fireproof sleeve can block and dissipate heat to prevent the smoke, heat or flame formed by the damaged battery core from being transmitted to the adjacent battery core to avoid burning. chance.

An object of the present invention is to provide a battery device, the battery device comprising a conductive metal surface and a plurality of fuses, the connection between the electrode ends of the conductive metal surface, the fuse and the battery core is designed in the form of a gap (Gap). When the fuse is blown, even if the short-circuited battery core is shaken by left and right displacement, the electrode end of the short-circuited battery core will not touch the fuse that is not completely blown, and the current path between the battery core and the conductive metal surface of the short-circuit fault is avoided. The possibility of conduction.

In order to achieve the above object, the present invention provides a battery device having an anti-heating structure, comprising: a plurality of battery cells, each of which is connected to each other in series or in parallel; a multi-layered housing frame, each of which is arranged in a shell of each layer And at least one fireproof passage, the passages separated by the plurality of insulating sheets are respectively disposed in the shell frames of the respective layers, wherein the cells in the shell frames of each layer are blocked by the fireproof passage.

In an embodiment of the invention, each of the battery cells is separately disposed in a fireproof sleeve.

In an embodiment of the invention, the battery device includes a conductive metal surface and a plurality of fuses. The conductive metal surface is disposed on the frame of the housing, and one end of each fuse is connected to the conductive metal surface and the other end is connected to the corresponding battery core. extreme.

In an embodiment of the invention, the plane of the conductive metal surface and the plane of the electrode end of each battery cell have a height difference, and the electrode ends of the respective battery cores are respectively connected to the conductive metal surface via the upwardly bent fuse.

The invention further provides a battery device with an anti-heating structure, comprising: a plurality of battery cells, each of which is connected to each other in series or in parallel; and a multi-layered housing frame, each of which is arranged in a housing frame of each layer Each of the battery cells is disposed in a fireproof casing.

1 and 2 are respectively a perspective view and a structural cross-sectional view showing an embodiment of a battery device according to the present invention. As shown in FIGS. 1 and 2, the battery device 100 of the present invention includes a plurality of casing frames 10 and a plurality of battery cells 20. The battery cells 20 are connected to each other in series or in parallel and are respectively arranged in the respective casing frames 10.

As shown in FIG. 2A, at least one fireproof passage 15 is provided in each of the casing frames 10 of each layer. The fireproof passage 15 is a passage that is partitioned by a plurality of insulating sheets 13. In an embodiment of the invention, the insulating sheet 13 is a thin sheet made of a fireproof material. The fireproof passage 15 is disposed between the electrode end of the battery cell 20 and the electrode end of the other battery cell 20, and each of the battery cells 20 is blocked from the battery cell 20 of the upper layer or the battery core 20 of the next layer via the fireproof passage 15. When one of the battery cells 20 is damaged (for example, the battery core 20 is pierced or damaged), the fireproof passage 15 can function as a barrier to block the smoke, heat or formed by the damaged battery core 20. The flame is conducted to the front and rear battery cells 20, and the smoke, heat or flame formed by the damaged battery cells 20 is guided to the outside of the housing frame 10, thereby reducing the chance of burning.

Please refer to FIG. 3, which is a cross-sectional view showing the structure of a battery cell of the battery device of the present invention. As shown in Fig. 3, the battery cell 20 of the present invention will be disposed in a fireproof sleeve 23 and covered by a fireproof sleeve 23. In the present invention, the fireproof sleeve 23 is a thin tube body made of a fireproof material. Each of the battery cells 20 is blocked from the adjacent battery cells 20 via the fireproof sleeve 23, respectively. When the battery core 20 is damaged to generate a fire, the fireproof sleeve 23 can function as a barrier and heat dissipation to prevent the smoke, heat or flame formed by the damaged battery core 20 from being transmitted to the adjacent battery cells 20, thereby avoiding The opportunity to burn.

Please refer to FIG. 4A and FIG. 4B , which are respectively a perspective structural view of a partially conductive metal surface of the battery device of the present invention, and a side structural view of the electrical connection between the conductive metal surface, the fuse and the electrode end of the battery core of the present invention, and See also Figure 1. As shown in those figures, a housing metal frame 11 of the battery unit 100 is provided with a conductive metal surface 11. Each of the battery cells 20 is connected to the conductive metal surface 11 via a fuse 17, for example, one end of the fuse 17 is connected to the conductive metal surface 11 and the other end is connected to an electrode terminal 21 (positive terminal or negative terminal) of the corresponding battery cell 20. Each of the battery cells 20 is electrically connected together through the conductive metal surface 11.

Since each of the battery cells 20 is provided with a respective fuse 17, if any one of the battery cells 20 has a short-circuit fault and an abnormal current is generated, the fuse 17 electrically connected to the short-circuited battery cell 20 will be blown first due to the high temperature. The electrode terminal 21 of the short-circuited battery cell 20 and the conductive metal surface 11 are broken to avoid affecting other normal battery cells 20.

After the fuse 17 is blown, the short-circuited battery core 20 will be displaced left and right in the housing frame 10. If the connection between the conductive metal surface 11, the fuse 17 and the electrode terminal 21 of the battery cell 20 is designed in a planar manner, the short-circuited battery core 20 may be re-electrically contacted with the fuse 17 which is not completely blown due to the left-right displacement factor, resulting in The current path between the shorted battery cell 20 and the conductive metal surface 11 is again turned on, leaving the other normal battery cells 20 at risk of being destroyed.

In order to prevent the short-circuited battery cell 20 from re-electrically contacting the fuse 17 which is not completely blown, the present invention designs the connection between the conductive metal surface 11, the fuse 17 and the electrode terminal 21 of the battery cell 20 in a Gap manner, and conducts electricity. The plane of the metal face 11 and the plane of the electrode end 21 of each of the battery cells 20 have a height difference (d). For example, the plane of the conductive metal face 11 is higher than the plane of the electrode end 21 of each of the battery cells 20, and the battery cell 20 is electrically The pole 21 is connected to the conductive metal face 11 via a fuse 17 bent upwards, respectively. When the fuse 17 is blown, the place where the fuse is blown will occur at the turning point between the fuse 17 and the battery core 20. Even if the short-circuited battery core 20 is shaken left and right, the electrode end 21 will not contact the fuse that is not completely blown. 17. The possibility of avoiding the current path between the shorted battery core 20 and the conductive metal surface 11 to be turned on again.

In summary, when the damaged battery core 20 generates a fire, the structure of the fireproof passage 15 and the fireproof sleeve 23 can block the conduction of smoke, heat or flame to the surrounding normal battery core 20, thereby avoiding the chance of burning. Delay the time of flash fire. In addition, the connection between the conductive metal surface 11, the fuse 17 and the electrode terminal 21 of the battery cell 20 is designed in a stepped manner, and even if the short-circuited battery core 20 is shaken by left and right displacement, the electrode terminal 21 of the short-circuited battery cell 20 is also The fuse 17 that is not completely blown is not touched, and the safety of the battery device 100 is increased by avoiding the possibility that the current path between the short-circuited battery cell 20 and the conductive metal surface 11 is again turned on.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, which is equivalent to the changes in shape, structure, features and spirit of the present invention. Modifications are intended to be included in the scope of the patent application of the present invention.

100‧‧‧ battery device

10‧‧‧Shell frame

11‧‧‧ Conductive metal surface

13‧‧‧Insulation sheet

15‧‧‧Fire passage

17‧‧‧Fuse

20‧‧‧ battery core

21‧‧‧ electrode end

23‧‧‧Fireproof casing

Fig. 1 is a perspective view showing the structure of an embodiment of a battery device of the present invention.

Fig. 2 is a cross-sectional view showing the structure of an embodiment of a battery device of the present invention.

Fig. 2A is an enlarged view showing a part of the structure of Fig. 2 of the present invention.

Fig. 3 is a cross-sectional view showing the structure of a battery cell of the battery device of the present invention.

Fig. 4A is a perspective structural view showing a portion of a conductive metal surface of the battery device of the present invention.

Figure 4B is a side view showing the electrical connection between the conductive metal surface of the present invention, the fuse and the electrode end of the battery cell.

Claims (8)

A battery device with an anti-heating structure, comprising: a plurality of battery cells, each of which is connected to each other in series or in parallel; a multi-layered housing frame, each of which is arranged in a housing frame of each layer; and at least one fireproof The passage, the passage partitioned by the plurality of insulating sheets, is respectively disposed in each layer of the housing frame, wherein the battery cells in each layer of the housing frame are blocked by the fireproof passage. A battery device having an anti-heating structure according to claim 1, wherein each of the battery cells is disposed in a fireproof casing. The battery device according to claim 1, wherein the battery device comprises a conductive metal surface and a plurality of fuses, the conductive metal surface is disposed on the housing frame, and one end of each fuse is connected. To the conductive metal surface and the other end is connected to a corresponding electrode end of the battery cell. The battery device of claim 3, wherein a plane of the conductive metal surface and a plane of the electrode end of each of the battery cells are different in height, and the electrode ends of each of the battery cells are respectively The fuse that is bent upward connects the conductive metal surface. A battery device with an anti-heating structure, comprising: a plurality of battery cells, each of which is connected to each other in series or in parallel; and a multi-layered housing frame, each of which is arranged in a housing frame of each layer, wherein each battery The cores are each placed in a fire protection sleeve. The battery device according to claim 5, wherein the battery device further comprises at least one fireproof passage separated by a plurality of insulating sheets, and each of the battery cells is blocked by the fireproof passage. . The battery device of claim 5, wherein the battery device comprises a conductive metal surface and a plurality of fuses, the conductive metal surface is disposed on the housing frame, and one end of each fuse is connected. To the conductive metal surface and the other end is connected to a corresponding electrode end of the battery cell. The battery device of claim 7, wherein a plane of the conductive metal surface and a plane of the electrode end of each of the battery cells are different in height, and the electrode ends of each of the battery cells are respectively The fuse that is bent upward connects the conductive metal surface.