KR-20260063423-A - Temperature sensor module for electric vehicles and its manufacturing method

Abstract

The present invention relates to a temperature sensor module for an electric vehicle and a method for manufacturing the same, characterized by comprising the steps of: forming grooves for fixing the board using a back drilling method on the upper surface of a circuit board on which via holes are plugged and one end of a wire is soldered to the circuit board and a temperature sensor is mounted; molding the upper surface and side of the circuit board by injecting an insulating material into the molding space while the grooves for fixing the board are seated on fixing pins within the molding space so that the upper surface of the circuit board is embedded; and connecting a common connection terminal to one end of a wire connected to one or more of the molded circuit boards.

Inventors

• 신용찬
• 임명훈

Assignees

• (주)티에이치엔
• (주) 에이엘웍스

Dates

Publication Date

20260507

Application Date

20241030

Claims (5)

1. A step of forming grooves for fixing the board on the upper surface of a circuit board on which via holes are plugged and one end of a wire is soldered to the circuit board and a temperature sensor is mounted, using a back drilling method; A step of molding the upper surface and side surface of the circuit board by injecting an insulating material into the molding space while the grooves for fixing the board are seated on the fixing pins within the molding space so that the upper surface of the circuit board is embedded therein; A method for manufacturing a temperature sensor module for an electric vehicle, characterized by including the step of connecting a common connection terminal to one side of wires connected to one or more molded circuit boards.
2. A method for manufacturing a temperature sensor module for an electric vehicle according to claim 1, characterized in that the lower surface of the plugged circuit board is exposed to contact a battery module.
3. A circuit board having a temperature sensor mounted on its upper surface, rear via holes plugged, and one end of a pair of wires soldered, with grooves for fixing the substrate formed on the upper surface; A temperature sensor module for an electric vehicle comprising: a molding member formed on the upper surface and side of a circuit board by molding an insulating material while the rear surface of the plugged circuit board is exposed and the upper surface of the circuit board is inserted.
4. A temperature sensor module for an electric vehicle according to claim 3, further comprising a connection terminal connected to the other side of the wires soldered to the circuit board.
5. A temperature sensor module for an electric vehicle according to claim 3, further comprising a common connection terminal that is commonly connected to the other side of the wires soldered to each of the plurality of circuit boards.

Description

Temperature sensor module for electric vehicles and its manufacturing method The present invention relates to a temperature sensor module, and more particularly to a temperature sensor module for electric vehicles and a method for manufacturing the same. Electric vehicles are automobiles that use a battery engine powered by electrical energy output from a battery. Because these electric vehicles utilize rechargeable batteries as their primary power source, they are environmentally friendly and produce less noise, which is why their adoption is rapidly increasing. Lithium-ion batteries are commonly used in electric vehicles, and maintaining an appropriate temperature is crucial when using them. In particular, since electric vehicles utilize a large number of lithium-ion batteries, proper temperature management is a critical issue. In order to manage the temperature of an electric vehicle battery, a temperature sensor is required to check the temperature of the battery module. As a method for checking the temperature of the battery module, an FPCB type temperature sensor module as shown in FIG. 1 is used. A general FPCB type temperature sensor module has a structure in which a plurality of temperature sensors (20) are combined on an FPCB (30) as shown in FIG. 1, and is attached to one side of a battery module using a fixing adhesive tape (40) attached to the back surface of the FPCB (30). The number of temperature sensors (20) formed on the FPCB (30) is determined to be multiple depending on the structure and size of the battery module. In this type of FPCB type temperature sensor module, each temperature sensor (20) formed on the FPCB (30) is protected by a protective pad, so there is a disadvantage of poor waterproofing effect. Also, depending on the structure and size of the battery module, the number of temperature sensors (20) formed on the FPCB (30) is variable, so depending on the vehicle's battery conditions, the FPCB type temperature sensor product must be modified (location of the temperature sensor, dimensions of the FPCB, etc.) or the FPCB type temperature sensor module must be redesigned to fit the new product. Figure 1 is an example of the appearance of a typical FPCB type temperature sensor. FIG. 2 is an external perspective view of a temperature sensor module for an electric vehicle according to one embodiment of the present invention. FIG. 3 is an example diagram of the manufacturing process flow of a temperature sensor module for an electric vehicle according to one embodiment of the present invention. FIG. 4 is a drawing for further explaining the manufacturing process of a temperature sensor module for an electric vehicle according to one embodiment of the present invention. The following detailed description of the present invention refers to the accompanying drawings, which illustrate specific embodiments in which the present invention can be practiced in order to clarify the objects, technical solutions, and advantages of the present invention. These embodiments are described in sufficient detail to enable a person skilled in the art to practice the present invention. Furthermore, throughout the detailed description and claims of the invention, the word "comprising" and its variations are not intended to exclude other technical features, additions, components, or steps. Other objects, advantages, and characteristics of the invention will become apparent to a person skilled in the art, partly from this description and partly from the practice of the invention. The following examples and drawings are provided as examples and are not intended to limit the invention. Moreover, the invention encompasses all possible combinations of the embodiments set forth herein. It should be understood that various embodiments of the invention differ from one another but need not be mutually exclusive. It should also be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. Accordingly, the following detailed description is not intended to be taken in a limiting sense, and the scope of the invention is limited only by the appended claims, including all equivalents to those claimed therein, provided they are properly described. Meanwhile, unless otherwise indicated in this specification or clearly contradictory to the context, items referred to in the singular encompass the plural unless otherwise required by the context. Furthermore, in describing the present invention, if it is determined that a detailed description of related known configurations or functions could obscure the essence of the invention, such detailed description will be omitted. First, FIG. 2 shows an external perspective view of a temperature sensor module for an electric vehicle according to one embodiment of the present invention. A temperature sensor module for an electric vehicle according to one embodiment of