Flow divider
By replacing insert injection molding in the shunt, the problem of inconsistency of solder joints in the traditional shunt is solved, the uniformity and stability of solder joints are achieved, and the reliability of data acquisition is improved.
Patent Information
- Application Number
- CN202421200921.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-29
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-05-29
AI Technical Summary
The solder joints of traditional shunts are staggered in height and inconsistent in size, which can easily lead to short circuits and affect the data acquisition accuracy of new energy vehicles.
PCBA circuit board is used to replace insert injection molding, the terminal pin assembly does not require metal bending, and all solder joints are set on the PCBA circuit board and connected by soldering to ensure consistency of solder joints.
It avoids the problems of staggered heights and inconsistent size of solder joints, reduces data acquisition failures, and improves the data acquisition reliability of new energy vehicles.
Smart Images
Figure CN223051405U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of new energy vehicles, in particular to a shunt. Background Art
[0002] The shunt is widely used in the real-time current data acquisition of new energy vehicle batteries and transmits the data to the control unit, which is an important data acquisition component in new energy vehicles. Generally, when manufacturing a shunt, the terminal pin assembly needs to be stamped and bent, and then completed through processes such as insert molding. During assembly, the NTC thermistor also needs to be bent twice and inserted into the shell together with the pin assembly, and then assembled by welding. The solder joints on the traditional shunt are uneven in height and size, and short circuits are likely to occur, resulting in data acquisition failures in the vehicle. Summary of the Utility Model
[0003] In view of this, to solve the above problems, the purpose of the utility model is to provide a shunt, including:
[0004] A shell, a PCBA circuit board, an NTC thermistor, a terminal pin assembly, a base and a resistor body assembly. The shell has an installation space, and an installation opening is formed on the lower surface of the shell. The upper surface of the shell extends vertically upward and forms a connector port. Both the installation opening and the connector port communicate with the installation space. The base has a receiving space and several installation posts. Several of the installation posts are all installed in the receiving space. Each installation post has a connection channel. The lower ends of several connection channels communicate with the lower surface of the base. An opening is formed on the upper surface of the base, and the opening communicates with the receiving space. The lower end of the NTC thermistor and the lower end of the terminal pin assembly are both installed in the receiving space. The upper ends of the NTC thermistor and the terminal pin assembly both penetrate the PCBA circuit board. The lower surface of the PCBA circuit board is installed on the upper surface of the base. Several fixing pieces are arranged on the outer wall of the base. Several of the fixing pieces are arranged in sequence along the circumference of the base. Several of the fixing pieces can be operably connected to or detached from the shell. The lower surface of the base is installed on the upper surface of the resistor body assembly. The upper surface of the resistor body assembly has several resistor connection posts. The upper end of each resistor connection post penetrates through a corresponding connection channel and is connected to the PCBA circuit board.
[0005] In another preferred embodiment, the terminal pin assembly includes: a terminal seat and several pins. The terminal seat is installed in the receiving space. The lower ends of several pins are all installed on the upper surface of the terminal seat. The upper ends of several pins all penetrate the PCBA circuit board and extend into the connector port.
[0006] In another preferred embodiment, several of the needle bodies are arranged in a "one" shape.
[0007] In another preferred embodiment, a plurality of first through holes, a plurality of second through holes and a plurality of third through holes are formed in the PCBA circuit board. The upper end of each needle body penetrates and is installed in a corresponding first through hole. The upper end of the NTC thermistor has two connection ends, and each connection end penetrates and is installed in a corresponding second through hole. The upper end of each resistance connection post penetrates and is installed in a corresponding third through hole.
[0008] In another preferred embodiment, several of the resistance connection posts are collectively arranged in a trapezoid.
[0009] In another preferred embodiment, the number of the first through holes is six, the number of the second through holes is two, and the number of the third through holes is six.
[0010] In another preferred embodiment, the fixing member is a hook, and a plurality of fixing holes are formed in the side wall of the housing. Each hook is detachably installed in a corresponding fixing hole.
[0011] In another preferred embodiment, the NTC thermistor, several of the needle bodies and several of the resistance connection posts are all soldered to the PCBA circuit board.
[0012] In another preferred embodiment, the resistor body assembly further includes: a base, and the lower surface of the housing, the lower surface of the base and the lower ends of several of the resistance connection posts are all installed on the upper surface of the base.
[0013] Due to the adoption of the above technical solutions, the positive effects of the present utility model compared with the prior art are as follows: By applying the present utility model, a shunt is provided. The PCBA circuit board replaces insert molding, and the terminal pin assembly does not need to be bent. All solder joints are arranged on the PCBA circuit board, avoiding the situation where the solder joints are uneven in height and inconsistent in size, which is prone to short circuit, thereby avoiding data acquisition failures in vehicles. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is an exploded schematic view of a shunt of the present utility model;
[0015] Figure 2 is a schematic diagram of the PCBA circuit board of a shunt of the present utility model.
[0016] In the accompanying drawings: 1. housing; 2. PCBA circuit board; 3. NTC thermistor; 4. base; 5. connector port; 6. mounting post; 7. connection channel; 8. resistor connection post; 9. end seat; 10. pin body; 11. first through hole; 12. second through hole; 13. third through hole; 14. hook; 15. fixing hole; 16. base. Detailed implementation manner
[0017] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the present utility model.
[0018] As Figure 1 and Figure 2 shown, a shunt of a preferred embodiment is shown, including:
[0019] A housing 1, a PCBA circuit board 2, an NTC thermistor 3, a terminal pin assembly, a base 4 and a resistor body assembly. The housing 1 has an installation space. An installation opening is provided on the lower surface of the housing 1. The upper surface of the housing 1 extends upward in the vertical direction and forms a connector port 5. Both the installation opening and the connector port 5 communicate with the installation space. The base 4 has an accommodation space and a plurality of mounting posts 6. The plurality of mounting posts 6 are all installed in the accommodation space. Each mounting post 6 has a connection channel 7. The lower ends of the plurality of connection channels 7 communicate with the lower surface of the base 4. An opening is provided on the upper surface of the base 4. The opening communicates with the accommodation space. The lower end of the NTC thermistor 3 and the lower end of the terminal pin assembly are both installed in the accommodation space. The upper ends of the NTC thermistor 3 and the terminal pin assembly both penetrate the PCBA circuit board 2. The lower surface of the PCBA circuit board 2 is installed on the upper surface of the base 4. A plurality of fixing members are provided on the outer wall of the base 4. The plurality of fixing members are sequentially arranged along the circumference of the base 4. The plurality of fixing members can be operably connected to or disengaged from the housing 1. The lower surface of the base 4 is installed on the upper surface of the resistor body assembly. The upper surface of the resistor body assembly has a plurality of resistor connection posts 8. The upper end of each resistor connection post 8 penetrates a corresponding connection channel 7 and is connected to the PCBA circuit board 2.
[0020] During actual use, first, the NTC thermistor 3 is soldered to the PCBA circuit board 2, then the terminal pin assembly is soldered to the PCBA circuit board 2, then the base 4 is installed on the resistor body assembly, then the PCBA circuit board 2 is installed on the upper surface of the base 4, so that the upper ends of the resistor connection posts 8 on the resistor body assembly sequentially pass through the connection channels 7 of the mounting posts 6 and are soldered to the PCBA circuit board 2, and finally the lower surface of the housing 1 is installed on the upper surface of the resistor body assembly, and the housing 1 is connected to the fixing members on the base 4.
[0021] Further, as a preferred embodiment, the terminal pin assembly includes: a terminal base 9 and a plurality of pin bodies 10. The terminal base 9 is installed in the accommodation space, and the lower ends of the plurality of pin bodies 10 are all installed on the upper surface of the terminal base 9, and the upper ends of the plurality of pin bodies 10 all penetrate through the PCBA circuit board 2 and extend into the connector port 5.
[0022] Further, as a preferred embodiment, the plurality of pin bodies 10 are arranged in a "one" shape.
[0023] Further, as a preferred embodiment, a plurality of first through holes 11, a plurality of second through holes 12 and a plurality of third through holes 13 are formed on the PCBA circuit board 2. The upper end of each pin body 10 penetrates and is installed in a corresponding first through hole 11. The upper end of the NTC thermistor 3 has two connection ends, and each connection end penetrates and is installed in a corresponding second through hole 12. The upper end of each resistor connection post 8 penetrates and is installed in a corresponding third through hole 13. Further, during actual use, the first through holes 11, the second through holes 12 and the third through holes 13 are formed on the PCBA circuit board 2, which facilitates the connection between the PCBA circuit board 2 and the NTC thermistor 3, the resistor connection posts 8 and the pin bodies 10. And an installation post 6 is arranged in the base 4, and the installation post 6 is provided with a connection channel 7 to guide and fix the resistor connection posts 8, ensuring the stability of the resistor connection posts 8.
[0024] Further, as a preferred embodiment, the plurality of resistor connection posts 8 are commonly arranged in a trapezoidal shape.
[0025] Further, as a preferred embodiment, the number of the first through holes 11 is six, the number of the second through holes 12 is two, and the number of the third through holes 13 is six.
[0026] Further, as a preferred embodiment, the fixing member is a hook 14, and a plurality of fixing holes 15 are formed on the side wall of the housing 1. Each hook 14 is detachably installed in a corresponding fixing hole 15. Further, during actual use, through the clamping connection between the hook 14 and the fixing hole 15, it is convenient to connect and disassemble the housing 1 and the base 4, so as to facilitate maintenance or replacement, which is convenient and fast. The disassembly of the hook 14 and the fixing hole 15 and the disassembly between the hook 14 and the fixing hole 15 are all conventional technical means in the art and will not be specifically described here.
[0027] Further, as a preferred embodiment, the NTC thermistor 3, the plurality of pin bodies 10 and the plurality of resistor connection posts 8 are all soldered to the PCBA circuit board 2.
[0028] Further, as a preferred embodiment, the resistor body assembly further includes: a base 16. The lower surface of the housing 1, the lower surface of the base 4 and the lower ends of the plurality of resistor connection posts 8 are all installed on the upper surface of the base 16.
[0029] The above are only the preferred embodiments of the present utility model, and thus do not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and illustrations of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A flow divider, characterized in that: include: A shell, a PCBA circuit board, an NTC thermistor, a terminal pin assembly, a base and a resistor body assembly, wherein the shell has an installation space, a mounting opening is provided on the lower surface of the shell, the upper surface of the shell extends upward in a vertical direction and forms a connector port, the mounting opening and the connector port are both connected to the installation space, the base has an accommodating space and a plurality of mounting columns, the plurality of mounting columns are installed in the accommodating space, each of the mounting columns has a connecting channel, the lower ends of the plurality of connecting channels are connected to the lower surface of the base, the upper surface of the base is provided with an opening, the opening is connected to the accommodating space, the NTC thermistor The lower end of the NTC thermistor and the lower end of the terminal pin assembly are both installed in the accommodating space, the upper end of the NTC thermistor and the upper end of the terminal pin assembly both pass through the PCBA circuit board, the lower surface of the PCBA circuit board is installed on the upper surface of the base, the outer wall of the base is provided with a plurality of fixings, and the plurality of fixings are sequentially arranged along the circumference of the base, and the plurality of fixings can be operably connected to or disconnected from the shell, the lower surface of the base is installed on the upper surface of the resistor body assembly, and the upper surface of the resistor body assembly has a plurality of resistor connecting columns, and the upper end of each of the resistor connecting columns passes through a corresponding one of the connecting channels and is connected to the PCBA circuit board.
2. The flow divider according to claim 1, characterized in that: The terminal pin assembly includes: an end seat and a plurality of pin bodies, wherein the end seat is installed in the accommodating space, the lower ends of the plurality of pin bodies are installed on the upper surface of the end seat, and the upper ends of the plurality of pin bodies penetrate the PCBA circuit board and extend into the connector port.
3. The flow divider according to claim 2, characterized in that: The plurality of needle bodies are arranged in a straight line.
4. The flow divider according to claim 2, characterized in that: The PCBA circuit board is provided with a plurality of first through holes, a plurality of second through holes and a plurality of third through holes, the upper end of each of the needle bodies is installed through a corresponding one of the first through holes, the upper end of the NTC thermistor has two connecting ends, each of the connecting ends is installed through a corresponding one of the second through holes, and the upper end of each of the resistor connecting columns is installed through a corresponding one of the third through holes.
5. The flow divider according to claim 4, characterized in that: A plurality of the resistor connection posts are arranged together in a trapezoidal shape.
6. The flow divider according to claim 4, characterized in that: The number of the first through holes is six, the number of the second through holes is two, and the number of the third through holes is six.
7. The flow divider according to claim 1, characterized in that: The fixing member is a hook, and a plurality of fixing holes are formed on the side wall of the shell. Each of the hooks can be detachably installed in a corresponding fixing hole.
8. The flow divider according to claim 2, characterized in that: The NTC thermistor, the plurality of needle bodies and the plurality of resistor connecting columns are all connected to the PCBA circuit board by soldering.
9. The flow divider according to claim 1, characterized in that: The resistor assembly further comprises a base, and the lower surface of the shell, the lower surface of the base and the lower ends of a plurality of resistor connecting columns are all mounted on the upper surface of the base.