Power battery connecting assembly protected by high-temperature-resistant adhesive tape
By wrapping the high-temperature resistant tape to protect the sampling wire harness, the problem of the sampling wire harness being prone to combust and melting when the battery is thermally out of control is solved, effective protection in a high-temperature environment is achieved, thermally out of control diffusion, and the safety of the power battery connection components is improved.
Patent Information
- Application Number
- CN202422301847.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-09-20
AI Technical Summary
In the prior art, the sampling wire harness is prone to combust and melt when the battery is thermally out of control, resulting in continuous short circuit between the battery cells, causing thermal runaway from other battery cells, which may cause the risk of fire and explosion of the battery cells to not be effectively controlled.
The sampling wire harness is wrapped with high-temperature resistant tape and the sampling wire harness is wrapped by a fully wrapped method to prevent high-temperature melting and prevent thermal runaway diffusion.
Resist the high temperature of 300℃ in a short time, protect the sampling wiring harness, prevent continuous short circuit inside the electrical connection assembly, avoid fire and explosion of the battery cell, and improve safety.
Smart Images
Figure CN223181330U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a power battery connection component, in particular to a power battery connection component protected by a high-temperature resistant tape. Background Art
[0002] In recent years, the new energy industry has developed rapidly, and the safety problem of automotive batteries has come into people's view. As one of the safety problems with relatively serious failure consequences, battery thermal runaway has attracted much attention in the industry.
[0003] Battery thermal runaway may cause serious consequences such as fire, explosion, release of harmful substances, equipment failure, and data loss. It is urgent to fully recognize the importance of battery safety and take appropriate measures to prevent and control the occurrence and development of battery thermal runaway.
[0004] When a single cell in a module experiences thermal runaway, high-temperature substances and gases are released through a pressure relief valve. After the normal energy release, it can return to calm within a few minutes. However, during the process of releasing high-temperature substances and high-temperature gases, the high-temperature substances will burn and melt the conventional sampling wire harness. The melting of the sampling wire harness causes continuous short circuits between the cells, triggering the successive thermal runaway of other cells, and ultimately leading to the ignition of the cells. In severe cases, an explosion occurs.
[0005] In view of the situation where a single cell thermal runaway in the above module triggers the thermal runaway of other cells in the module and even causes fire and explosion, developing a new electrical connection scheme will be of great significance. Content of the Utility Model
[0006] In order to solve the deficiencies of the above technologies, the utility model provides a power battery connection component protected by a high-temperature resistant tape.
[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is: a power battery connection component protected by a high-temperature resistant tape, including a wire harness isolation board. This power battery connection component further includes:
[0008] An electrical connection piece, which is installed and fixed on the wire harness isolation board;
[0009] A sampling wire harness, which is connected to the electrical connection piece through a welding solder joint for sampling and is connected with a connector at the other end;
[0010] A high-temperature resistant tape, which is wrapped around the sampling wire harness in a full-wrap manner.
[0011] Preferably, an installation groove for installing and placing the electrical connection piece is formed on the wire harness isolation board. After the electrical connection piece is welded to the wire of the corresponding sampling wire harness, it is fixed in the installation groove through a buckle.
[0012] Preferably, the welding solder joints between the sampling wire harness and the electrical connection piece are formed by ultrasonic welding.
[0013] Preferably, the high-temperature resistant tape is based on an insulating cloth, and a double-sided tape is fixedly adhered to one side of the insulating cloth. The exposed side of the double-sided tape serves as the back glue to make the high-temperature resistant tape adhere and wind around the sampling wire harness.
[0014] Preferably, the insulating cloth is composed of a silicone layer and a fiberglass cloth;
[0015] There are two layers of silicone layers in total, and one layer of fiberglass cloth in total. The fiberglass cloth is clamped between the two silicone layers.
[0016] Preferably, the double-sided tape is fixedly adhered to any one of the silicone layers.
[0017] The utility model discloses a power battery connection component protected by a high-temperature resistant tape. By using the high-temperature resistant tape to wind and protect the sampling wire harness, it can resist high temperature in a short time, effectively protect the sampling wire harness, prevent the further spread of thermal runaway, and thus avoid the ignition and explosion of the battery cells, increasing safety. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0019] Figure 2 It is a schematic diagram of the high-temperature resistant tape adopted by the utility model.
[0020] Figure 3 For Figure 1 The enlarged schematic diagram of the structure at A in
[0021] In the figure: 1, wire harness isolation board; 2, electrical connection piece; 3, sampling wire harness; 4, high-temperature resistant tape; 5, connector; 6, buckle; 4-1, silicone layer; 4-2, fiberglass cloth; 4-3, double-sided tape. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] The following further describes the utility model in detail with reference to the drawings and specific embodiments.
[0023] The utility model discloses a power battery connection component protected by a high-temperature resistant tape, and the overall structure is arranged as Figure 1 shown, including a wire harness isolation board 1, and an electrical connection piece 2, a sampling wire harness 3, and a connector 5.
[0024] The wire harness isolation board 1 serves as an injection molding isolation part for the installation and fixation of the electrical connection piece 2; during the injection molding process of the wire harness isolation board 1, an installation groove for the installation and placement of the electrical connection piece 2 is formed, and after the electrical connection piece 2 is welded to the wire of the corresponding sampling wire harness 3, it is fixed in the installation groove through a buckle 6.
[0025] The sampling wire harness 3 is connected to the electrical connection piece 2 through ultrasonic welding solder joints to achieve sampling from the electrical connection piece and transmitting information. At the other end of the sampling wire harness 3, a connector 5 for connecting to the output end is connected.
[0026] Considering the situation that the existing battery cells' thermal runaway may cause the module to go out of control and even catch fire and explode, in the present invention, a high-temperature resistant tape 4 is wrapped around the sampling wire harness 3 in a full-wrap manner to protect the sampling wire from being burned and melted by high temperature in a short-time high-temperature situation.
[0027] The high-temperature resistant tape 4 used is as Figure 2 shown. It uses an insulating cloth as the base material, and a double-sided tape 4-3 is fixedly adhered to one side of the insulating cloth. The exposed side of the double-sided tape 4-3 serves as the back glue to make the high-temperature resistant tape adhere and wind around the sampling wire harness 3, and the insulating cloth is used to resist the influence of the high-temperature environment caused by the high-temperature material ejected by the pressure relief valve of a single battery cell during thermal runaway.
[0028] As Figure 3 shown, the insulating cloth is composed of a silicone layer 4-1 and a fiberglass cloth 4-2; there are two layers of the silicone layer 4-1 in total, and one layer of the fiberglass cloth 4-2 in total. The fiberglass cloth 4-2 is sandwiched between the two layers of the silicone layer 4-1. It is okay to fixedly adhere the double-sided tape 4-3 to any one layer of the silicone layer 4-1.
[0029] Therefore, for the power battery connection component disclosed in the present invention and protected by the high-temperature resistant tape, by using the high-temperature resistant tape to wind and protect the sampling wire harness, it can resist a high temperature of 300°C in a short time, thereby effectively protecting the sampling wire harness, preventing the sampling wire harness from being melted by high temperature and causing continuous short circuit inside the electrical connection component, blocking the further spread of thermal runaway, and avoiding the battery cells from catching fire and exploding.
[0030] The above-mentioned embodiments are not limitations to the present invention, and the present invention is not limited to the above examples either. Changes, modifications, additions, or substitutions made by those skilled in the art within the technical scope of the present invention also fall within the protection scope of the present invention.
Claims
1. A power battery connection component protected by a high-temperature resistant tape, comprising a wire harness isolation board (1), characterized in that: The power battery connection assembly further includes: An electrical connection piece (2), which is installed and fixed on the wire harness isolation board (1); A sampling wire harness (3), which is connected to the electrical connection piece (2) for sampling through a welding solder joint and is connected with a connector (5) at the other end; A high-temperature resistant tape (4), which is wrapped around the sampling wire harness (3) in a full-wrap manner.
2. The power battery connection assembly protected by the high-temperature resistant tape according to claim 1, wherein: An installation groove for installing and placing the electrical connection piece (2) is formed on the wire harness isolation board (1). After the electrical connection piece (2) is welded to the wire of the corresponding sampling wire harness (3), it is fixed in the installation groove through a buckle (6).
3. The power battery connection assembly protected by a high-temperature resistant tape according to claim 1, wherein: The welding solder joint between the sampling wire harness (3) and the electrical connection piece (2) is formed by ultrasonic welding.
4. The power battery connection assembly protected by the high-temperature resistant tape according to claim 1, wherein: The high-temperature resistant tape (4) is based on an insulating cloth, and a double-sided tape (4-3) is fixedly pasted on one side of the insulating cloth. The side of the double-sided tape (4-3) exposed to the outside is used as the back glue to make the high-temperature resistant tape adhere and wind around the sampling wire harness (3).
5. The power battery connection assembly protected by a high-temperature resistant tape according to claim 4, wherein: The insulating cloth is composed of a silica gel layer (4-1) and a fiberglass cloth (4-2); There are two silica gel layers (4-1) in total, and one fiberglass cloth (4-2) in total. The fiberglass cloth (4-2) is sandwiched between the two silica gel layers (4-1).
6. The power battery connection assembly protected by a high-temperature resistant tape according to claim 5, wherein: The double-sided tape (4-3) is fixedly pasted on any one of the silica gel layers (4-1).