A linear voltage-temperature integrated terminal

Abstract

This application relates to the field of terminal body technology, and in particular to a linear voltage and temperature integrated terminal. By fixing and integrating the voltage acquisition unit and the temperature acquisition unit into the same terminal body, it achieves the technical effect of simultaneously acquiring voltage and temperature signals with a single terminal body. This reduces the installation space occupied by the terminal body in the battery pack casing, optimizes the space utilization of the battery pack casing, and reduces the number of installation interfaces of the terminal body in the battery pack casing. It is suitable for the trend of lightweighting and compactness in new energy electric vehicles. Moreover, the voltage acquisition unit and the temperature acquisition unit are arranged in a linear manner, which realizes that only a single set of wiring harness is needed to complete the transmission of voltage and temperature signals, simplifying the wiring layout of the battery pack casing and reducing the wiring complexity of the battery pack casing.

Description

Technical Field

[0001] This application relates to the field of terminal technology, and in particular to a linear voltage-temperature integrated terminal. Background Technology

[0002] In the battery packs of new energy electric vehicles, terminals are components used for monitoring the status of battery cells. Through physical connections and signal transmission, terminals directly relate to the data acquisition accuracy and system stability of the battery management system. In traditional technical solutions, temperature and voltage acquisition are the two core parameters for battery pack monitoring.

[0003] In related technologies, temperature acquisition and voltage acquisition rely on two independently designed terminals:

[0004] The temperature acquisition terminal converts thermal signals into electrical signals through a built-in temperature chip, providing real-time temperature data to the battery management system and reducing the risk of thermal runaway.

[0005] The voltage acquisition terminal acquires voltage signals through a voltage acquisition chip and transmits them to the battery management system for evaluating the battery's charge and discharge status and for equalization control.

[0006] The two types of terminals operate independently in the battery pack, each responsible for acquiring a single parameter, temperature or voltage, and are the basic hardware for ensuring the safe operation of the battery.

[0007] However, this approach has the following drawbacks: the two types of terminals require separate installation space in the battery pack casing, which increases the overall structural volume and conflicts with the goal of lightweighting and compact design of new energy electric vehicles. Furthermore, the independent terminals require two sets of wiring harnesses and interfaces, which increases the wiring complexity of the battery pack casing and is not conducive to the optimization of internal space. Utility Model Content

[0008] To address the aforementioned issues, this application provides a linear voltage-temperature integrated terminal.

[0009] The linear voltage-temperature integrated terminal provided in this application adopts the following technical solution:

[0010] A linear voltage and temperature integrated terminal is installed on the outer shell of a battery pack. It includes a terminal body, and the terminal body includes a voltage acquisition part and a temperature acquisition part. The voltage acquisition part and the temperature acquisition part are both integrated on the terminal body, fixedly connected, and arranged in a linear manner.

[0011] By adopting the above technical solution, the voltage acquisition unit and the temperature acquisition unit are fixedly connected and integrated into the same terminal body, achieving the technical effect of simultaneously acquiring voltage and temperature signals with a single terminal body. This optimizes the space utilization of the battery pack, directly reduces the number of installation interfaces on the battery pack casing terminal body and the total volume occupied by the terminal body, which is suitable for the lightweight and compact design requirements of today's new energy electric vehicles. Furthermore, the voltage acquisition unit and the temperature acquisition unit are arranged in a straight line, realizing that only a single set of wiring harnesses is needed to complete the transmission of voltage and temperature signals, simplifying the wiring layout of the battery pack casing and reducing the wiring complexity of the battery pack casing.

[0012] Preferably, the terminal body includes a connecting piece, which is fixedly connected to the temperature acquisition unit, and the voltage acquisition unit and the temperature acquisition unit are fixedly connected to the battery pack casing through the connecting piece.

[0013] By adopting the above technical solution, the voltage acquisition unit and the temperature acquisition unit can be fixedly connected to the battery pack shell through a connecting piece, which increases the connection stability between the terminal body and the battery pack shell and reduces signal acquisition abnormalities caused by vibration of the terminal body.

[0014] Preferably, the temperature acquisition unit is configured as a potting cavity, the potting cavity is provided with a shell and a cover, the inner wall of the shell and the edge of the cover are fixedly connected to form the potting cavity, the connecting piece is fixedly connected to the side of the shell away from the voltage acquisition unit, and the potting cavity is formed by continuous stamping.

[0015] By adopting the above technical solution, the potting cavity formed by the fixed connection between the shell and the cover is used to place the temperature chip and to encapsulate and fix it through the potting process. This not only provides a stable installation position for the temperature chip, but also reduces the corrosion of the temperature chip by external environment such as moisture and dust through the sealing and protection of the potting glue, ensuring that the temperature chip can work stably and accurately for a long time. The cover ensures that the potting glue is sealed in the potting cavity during the curing process, reducing the risk of temperature chip exposure due to potting glue leakage. At the same time, the continuous stamping of the potting cavity improves the structural strength of the shell and can withstand the pressure during the potting process.

[0016] Preferably, one end of the housing is fixed with a snap-fit ​​block, the other end of the housing is fixed with a snap-fit ​​groove, and both ends of the housing are flipped upward along the axis of the housing, with the snap-fit ​​block engaging with the snap-fit ​​groove.

[0017] By adopting the above technical solution, the snap-fit ​​between the snap-fit ​​block and the snap-fit ​​groove can achieve rapid assembly, reduce the need for additional fasteners to complete the shell closure, simplify the encapsulation process of the potting cavity, and enhance the sealing reliability of the shell.

[0018] Preferably, the cover is fixedly provided with a sealing block, which seals the gap between the shell and the cover.

[0019] By adopting the above technical solution, the gap between the shell and the cover is physically sealed by the sealing block, which reduces the leakage of potting compound from the gap between the shell and the cover during the potting process, and further reduces the risk of temperature chip exposure caused by potting compound leakage.

[0020] Preferably, the inner wall of the housing is provided with anti-slip blocks, which are formed by recessing into the glue-filling cavity through the outer wall of the housing, and the inner wall of the housing has a corresponding protrusion structure, and the anti-slip blocks are arranged in an array.

[0021] By adopting the above technical solution, the anti-slip block increases the contact area between the inner wall of the housing and the potting compound, improves the bonding strength between the potting compound and the housing, and reduces the potting compound from falling off due to vibration or thermal expansion and contraction, thereby ensuring the long-term fixed reliability of the temperature chip.

[0022] Preferably, the voltage acquisition unit is configured as a chip cavity, and the inner wall of the chip cavity has a plurality of chip slots.

[0023] By adopting the above technical solution, the chip cavity realizes the modular packaging of the voltage sampling chip, the chip slot positions and fixes several voltage sampling chips, improves the distribution density and monitoring accuracy of voltage acquisition points, reduces the displacement of voltage sampling chips under battery pack vibration, and ensures the stability of voltage signal acquisition.

[0024] Preferably, the terminal body further includes a wiring portion, which is fixedly connected to the side of the chip cavity away from the potting cavity.

[0025] By adopting the above technical solution, the wiring section is used to store a single wire harness. One end of the single wire harness is electrically connected to the voltage acquisition chip and the temperature chip, and the other end of the single wire harness is electrically connected to the wire harness of the battery management system to complete the transmission of voltage and temperature signals. This optimizes the wiring layout of the battery pack casing and reduces the wiring complexity of the battery pack casing.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. By fixing and integrating the voltage acquisition unit and temperature acquisition unit into the same terminal body and arranging them in a straight line, the technical effect of simultaneously acquiring voltage and temperature signals with a single terminal body is achieved. This optimizes the space utilization of the battery pack casing, enables the transmission of voltage and temperature signals with only a single wiring harness, simplifies the wiring layout of the battery pack casing, reduces the wiring complexity of the battery pack casing, and is suitable for the lightweight and compact design requirements of new energy electric vehicles.

[0028] 2. The temperature chip is sealed in the potting cavity formed by the housing and the cover, and the potting process is used to achieve stable installation and protection, reduce the corrosion of moisture and dust, and ensure the long-term stable operation of the temperature chip. At the same time, the cover reduces the occurrence of potting glue leakage and ensures the safety of the temperature chip.

[0029] 3. The snap-fit ​​between the snap-fit ​​block and the snap-fit ​​groove enables the shell to be quickly flipped and closed, which simplifies the potting cavity encapsulation process and improves the sealing performance of the potting cavity. At the same time, the shell is continuously stamped, which enhances the structural strength of the shell and can withstand the pressure of potting. Attached Figure Description

[0030] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0031] Figure 2 This is a schematic diagram of the rear structure of an embodiment of this application.

[0032] Explanation of reference numerals in the attached drawings: 1. Terminal body; 2. Connecting piece; 3. Wiring part; 4. Potting cavity; 41. Housing; 411. Extension part; 4111. Snap-fit ​​block; 4112. Snap-fit ​​groove; 414. Anti-slip block; 42. Cover; 421. Sealing block; 5. Chip cavity; 51. Chip slot. Detailed Implementation

[0033] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0034] This application discloses a linear voltage-temperature integrated terminal. (Refer to...) Figure 1 A linear voltage and temperature integrated terminal is installed on the outer shell of a battery pack. It includes a terminal body 1, which includes a connecting piece 2, a wiring part 3, a voltage acquisition part, and a temperature acquisition part. The voltage acquisition part and the temperature acquisition part are both integrated on the terminal body 1. The voltage acquisition part has a built-in voltage acquisition chip, and the temperature acquisition part has a built-in temperature chip. The voltage acquisition part and the temperature acquisition part are fixedly connected. The connecting piece 2 is fixedly connected to the temperature acquisition part, and the wiring part 3 is fixedly connected to the voltage acquisition part. The connecting piece 2, the wiring part 3, the voltage acquisition part, and the temperature acquisition part are arranged in a straight line, in the order of connecting piece 2, temperature acquisition part, voltage acquisition part, and wiring part 3.

[0035] This demonstrates that by fixing the voltage acquisition unit and the temperature acquisition unit together and integrating them into the same terminal body 1, the technical effect of simultaneously acquiring voltage and temperature signals with a single terminal body 1 is achieved. This optimizes the space utilization of the battery pack, directly reduces the number of installation interfaces on the battery pack casing and the total volume occupied by the terminal body 1, and is suitable for the lightweight and compact design requirements of new energy electric vehicles.

[0036] To further explain, the connecting piece 2, the wiring part 3, the voltage acquisition part, and the temperature acquisition part are arranged in a straight line. Since the wiring part 3 is fixedly connected to the voltage acquisition part, the wiring part 3 is used to store a single set of wires. One end of the single set of wires is electrically connected to the voltage acquisition chip and the temperature chip, and the other end of the single set of wires is electrically connected to the wiring harness of the battery management system to complete the transmission of voltage and temperature signals. This optimizes the wiring layout of the battery pack casing and reduces the wiring complexity of the battery pack casing.

[0037] Meanwhile, the connecting piece 2 is a rectangular sheet structure with rounded corners. One side of the connecting piece 2 is fixedly connected to the side of the temperature acquisition unit and the voltage acquisition unit. Since the temperature acquisition unit and the voltage acquisition unit are fixedly connected, and the connecting piece 2 is fixedly connected to the battery pack shell, the voltage acquisition unit and the temperature acquisition unit can be fixedly connected to the battery pack shell through a single connecting piece 2. This strengthens the connection stability between the terminal body 1 and the battery pack shell and reduces signal acquisition abnormalities caused by vibration of the terminal body 1.

[0038] Correspondingly, the temperature acquisition unit is set as a glue-filling cavity 4, which is provided with a shell 41 and a cover 42. The connecting piece 2 is fixedly connected to the shell 41, and the inner wall of the shell 41 is fixedly connected to the outer wall of the cover 42 to form the glue-filling cavity 4.

[0039] Specifically, the cover 42 is a circular sheet structure, the shell 41 unfolds into a rectangular sheet structure, and the shell 41 has symmetrical extensions 411 on the left and right ends near the connecting piece 2. One end of the extension 411 is fixedly connected to a snap-fit ​​block 4111, and the other end of the extension 411 has a snap-fit ​​groove 4112. The shape of the snap-fit ​​block 4111 matches that of the snap-fit ​​groove 4112.

[0040] Furthermore, the left and right ends of the housing 41 are flipped upward along the axis of the housing 41, and the snap-fit ​​block 4111 and the snap-fit ​​groove 4112 are snapped together. The outer wall of the snap-fit ​​block 4111 abuts against the groove wall of the snap-fit ​​groove 4112. After the extension 411 is flipped, it forms a cylindrical structure. The diameter of the cylindrical structure matches the diameter of the cover 42. The cover 42 is fixed to the inner wall of the housing 41 near the connecting piece 2. Finally, the cover 42 and the housing 41 together form the glue-filling cavity 4.

[0041] This explains that the potting cavity 4 formed by the fixed connection between the housing 41 and the cover 42 is used to place the temperature chip and to encapsulate and fix it through the potting process. This not only provides a stable installation position for the temperature chip, but also reduces the temperature chip from being corroded by external environments such as moisture and dust through the sealing and protection of the potting glue, ensuring that the temperature chip can work stably and accurately for a long time. The cover 42 ensures that the potting glue is sealed in the potting cavity 4 during the curing process, reducing the risk of exposure of the temperature chip due to potting glue leakage.

[0042] It should be noted that before the potting process, one end of the wire harness has been soldered to the solder point of the temperature chip to establish an electrical connection. The connected wire harness and the temperature chip are placed together in the potting cavity 4, and then potting glue is injected. After the potting glue cures, the connection between the wire harness and the chip is completely wrapped and fixed to form a sealed structure.

[0043] Reference Figure 2 Meanwhile, a sealing block 421 is fixedly connected to the cover 42, and the sealing block 421 is also fixedly connected to the housing 41. The sealing block 421 is used to seal the gap between the housing 41 and the cover 42, reducing the seepage of potting compound from the gap between the housing 41 and the cover 42 during the potting process, and further reducing the risk of temperature chip exposure caused by potting compound leakage.

[0044] In addition, the inner wall of the housing 41 is provided with anti-slip blocks 414. There are several anti-slip blocks 414. In this embodiment, there are eight anti-slip blocks 414. The anti-slip blocks 414 are formed by recessing into the glue filling cavity 4 through the outer wall of the housing 41, and a protruding structure is formed at the corresponding position on the inner wall of the housing 41.

[0045] This demonstrates that the anti-slip block 414 increases the contact area between the inner wall of the housing 41 and the potting compound, thereby improving the bonding strength between the potting compound and the housing 41 and reducing the potting compound from falling off due to vibration or thermal expansion and contraction, thus ensuring the long-term fixed reliability of the temperature chip.

[0046] In addition, the glue-filling cavity 4 is formed by continuous stamping, which improves the structural strength of the glue-filling cavity 4 and enables it to withstand the pressure during the glue-filling process.

[0047] On the other hand, the temperature acquisition unit is set as a chip cavity 5. The unfolded structure of the chip cavity 5 is a rectangular sheet structure with rounded corners. The left and right ends of the rectangular sheet structure are flipped upward along the axis of the chip cavity 5 to form the chip cavity 5. At the same time, chip slots 51 are opened on the inner wall of the chip cavity 5. In this embodiment, there are two chip slots 51, and the two chip slots 51 are arranged in a straight line along the axis of the chip cavity 5.

[0048] This demonstrates that the chip cavity 5 enables modular packaging of the voltage sampling chip, and the two chip slots 51 position and fix the two voltage sampling chips, thereby improving the distribution density and monitoring accuracy of voltage acquisition points, reducing the displacement of the voltage sampling chip under battery pack vibration, and ensuring the stability of voltage signal acquisition.

[0049] It should be noted that after connecting the temperature chip, the voltage acquisition chip is electrically connected to the wiring harness by soldering. At the same time, the wiring harness is crimped into the chip cavity to fix the voltage acquisition chip. The other end of the wiring harness is led out from the wiring part 3 and finally extends to the battery pack shell interface. The other end of the wiring harness is electrically connected to the wiring harness of the battery management system to complete the transmission of voltage and temperature signals.

[0050] The implementation principle of a linear voltage-temperature integrated terminal in this application embodiment is as follows:

[0051] The linear voltage and temperature integrated terminal body is installed at the designated position on the battery pack shell. The terminal body consists of four parts: a connecting piece, a temperature acquisition part, a voltage acquisition part, and a wiring part. It adopts a linear arrangement design, and the connecting piece, temperature acquisition part, voltage acquisition part, and wiring part are fixedly connected. During operation, the connecting piece must be fixedly connected to the battery pack shell to ensure the overall stability of the terminal body. This setting optimizes space utilization and reduces the number of installation interfaces on the battery pack shell, adapting to the lightweight requirements of new energy electric vehicles.

[0052] The temperature acquisition unit is configured as a potting cavity, and its encapsulation process is as follows:

[0053] The temperature chip is placed inside the potting cavity to ensure accurate chip positioning. Potting compound is injected into the potting cavity through the potting process to completely encapsulate the temperature chip. After the potting compound cures, it reduces external contaminants such as moisture and dust, protecting the chip for long-term stable operation.

[0054] It should be noted that before the potting process, one end of the wire harness has been soldered to the solder point of the temperature chip to establish an electrical connection. The connected wire harness and the temperature chip are placed together in the potting cavity, and then potting compound is injected. After the potting compound cures, the connection between the wire harness and the chip is completely wrapped and fixed to form a sealed structure.

[0055] Meanwhile, the inner wall of the potting cavity shell is equipped with anti-slip blocks, which increase the contact area between the shell and the potting compound, improve the bonding strength, and reduce the potting compound falling off due to vibration or thermal expansion and contraction after curing.

[0056] The voltage acquisition unit is designed with the chip cavity as the main body, and two voltage acquisition chips are fixed in the chip slots on the inner wall of the chip cavity to achieve modular packaging. The linear arrangement design of the chip slots improves the distribution density and monitoring accuracy of the voltage acquisition points.

[0057] After connecting the temperature chip, the voltage acquisition chip is electrically connected to the wiring harness by soldering. The other end of the wiring harness is led out from the wiring section and eventually extends to the battery pack housing interface. The other end of the wiring harness is electrically connected to the wiring harness of the battery management system to complete the transmission of voltage and temperature signals. This setup reduces the wiring complexity of the battery pack housing and reduces interference from multiple wiring harnesses, making it suitable for the compact design trend of new energy electric vehicles.

[0058] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A linear voltage-temperature integrated terminal, mounted on the outer casing of a battery pack, characterized in that, The device includes a terminal body (1), which comprises a connecting piece (2), a wiring portion (3), a voltage acquisition portion, and a temperature acquisition portion. The voltage acquisition portion and the temperature acquisition portion are both integrated on the terminal body (1) and are fixedly connected. The connecting piece (2) is fixedly connected to the temperature acquisition portion. The voltage acquisition portion and the temperature acquisition portion are fixedly connected to the battery pack casing via the connecting piece (2). The wiring portion (3) is fixedly connected to the voltage acquisition portion and is used to store a single set of wires. The connecting piece (2), the wiring portion (3), the voltage acquisition portion, and the temperature acquisition portion are arranged in a straight line, with the order being the connecting piece (2). The temperature acquisition unit, the voltage acquisition unit, and the wiring unit (3) are provided. The temperature acquisition unit is configured as a potting cavity (4). The potting cavity (4) is provided with a housing (41) and a cover (42). The inner wall of the housing (41) is fixedly connected to the edge of the cover (42) to form the potting cavity (4). The connecting piece (2) is fixedly connected to the side of the housing (41) away from the voltage acquisition unit. One end of the housing (41) is fixed with a snap-fit ​​block (4111), and the other end of the housing (41) is fixed with a snap-fit ​​groove (4112). Both ends of the housing (41) are flipped upward along the axis of the housing (41), and the snap-fit ​​block (4111) and the snap-fit ​​groove (4112) are snap-fitted together.

2. The linear voltage-temperature integrated terminal according to claim 1, characterized in that, The glue-filling cavity (4) is formed by continuous stamping.

3. A linear voltage-temperature integrated terminal according to claim 1, characterized in that, The cover (42) is fixedly provided with a sealing block (421), which seals the gap between the shell (41) and the cover (42).

4. A linear voltage-temperature integrated terminal according to claim 1, characterized in that, The inner wall of the housing (41) is provided with an anti-slip block (414), which is formed by recessing into the glue-filling cavity (4) through the outer wall of the housing (41), and a protruding structure is formed at the corresponding position of the inner wall of the housing (41).

5. A linear voltage-temperature integrated terminal according to claim 1, characterized in that, The voltage acquisition unit is configured as a chip cavity (5), and the inner wall of the chip cavity (5) is provided with a plurality of chip slots (51). The wiring part (3) is fixedly connected to the side of the chip cavity (5) away from the potting cavity (4).

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