CN210111990U - CAN node module with terminal resistor - Google Patents
CAN node module with terminal resistor Download PDFInfo
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- CN210111990U CN210111990U CN201920577195.4U CN201920577195U CN210111990U CN 210111990 U CN210111990 U CN 210111990U CN 201920577195 U CN201920577195 U CN 201920577195U CN 210111990 U CN210111990 U CN 210111990U
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- resistor
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Abstract
The utility model provides a CAN node module with terminal resistance, including CAN transceiver, terminal resistance and connector, the CAN transceiver with the connector is connected, terminal resistance with the connector is connected, its characterized in that, the connector includes four pins, the utility model discloses installed terminal resistance on each CAN node module, terminal resistance is connected to the connector through the pencil, need not use the switch to control terminal resistance, has directly avoided the switch to disturb the influence to whole CAN communication network, has improved CAN communication network's stability; meanwhile, when the terminal resistor is not required to be accessed, the two ends of the terminal resistor are in an open circuit state and are not connected with the CAN communication network, so that the influence of the open circuit of only one end of the terminal resistor on the CAN communication network communication caused by the antenna is effectively reduced, and the communication quality of the CAN communication network is improved.
Description
Technical Field
The utility model relates to a power battery field, in particular to CAN node module with terminal resistance.
Background
The CAN network is highly valued for its high reliability and good fault tolerance, and is widely used in the automotive industry environment with severe temperature, strong electromagnetic radiation and large vibration. In order to eliminate the reflected wave generated by the network, a 120 Ω termination resistor must be added at each end of the network to enhance the signal strength. At present, the terminating resistor is usually connected to the CAN network in the following way: directly welding the first two node modules of the CAN network; a CAN terminal resistor component is independently manufactured to be connected into a CAN network; each node module is welded with a terminal resistor, and the controllable switch is used for controlling the terminal resistor to be connected into the circuit; each node module is welded with a terminal resistor, one end of the terminal resistor is suspended, and the terminal resistor is connected to the other bus on the first node and the last node; a wiring harness is used to connect the terminal resistor into the node module, etc.
In the method, each node module is welded with a terminal resistor, the controllable switch is used for controlling the terminal resistor to be connected into the circuit, each node module is welded with the terminal resistor, one end of each terminal resistor is suspended, and the two schemes of connecting the terminal resistor to the other bus on the first node and the last node have low cost and convenient production and processing, but the controllable switch is used for controlling the terminal resistor, so that the operation is complex, the terminal resistor is easily interfered, and the stability is not strong; the mode of suspending one end of the terminal resistor is equivalent to an antenna, and the suspended resistor CAN affect the communication quality of the CAN network.
SUMMERY OF THE UTILITY MODEL
The utility model provides a not enough to prior art, the utility model provides a CAN node module with terminal resistance CAN improve CAN communication network's interference killing feature when guaranteeing low-cost, improves communication quality.
The utility model provides a CAN node module with terminal resistance, including CAN transceiver, terminal resistance and connector, the CAN transceiver with the connector is connected, terminal resistance with the connector is connected, its characterized in that, the connector includes four reservation pins.
Further, the CAN transceiver is connected to two pins of the reserved pins through a wire harness.
Further, the terminal resistor is connected to the other two pins of the reserved pins through a wire harness.
The utility model provides a pair of CAN node module with terminal resistance, installed terminal resistance on each CAN node module, simultaneously, terminal resistance is connected to the connector through the pencil, need not use the switch to the terminal resistance whether to link into CAN communication network and control, has directly avoided the switch to disturb the influence to whole CAN communication network, has improved CAN communication network's stability; when the terminal resistor is not required to be accessed, the two ends of the terminal resistor are in an open circuit state and are not connected with the CAN communication network, so that the influence of an antenna formed by short circuit of only one end of the terminal resistor on CAN communication network communication is effectively reduced, and the communication quality of the CAN communication network is improved.
Drawings
Fig. 1 is a schematic diagram of a module structure of a CAN node module with a termination resistor.
Fig. 2 is a schematic view of a CAN communication network structure composed of a CAN node module with a termination resistor.
Wherein, 1 is a CAN transceiver, 2 is a termination resistor, 3 is a connector, 31 is pin one, 32 is pin two, 33 is pin three, 34 is pin four, 4 is a first module, 5 is a second module, 6 is a third module, 7 is a fourth module, and 8 is a fifth module.
Detailed Description
The present invention will be described in more detail with reference to the accompanying drawings, and it should be understood that the following embodiments are only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and are not intended to limit the present invention.
The utility model provides a CAN node module with terminal resistance, including CAN transceiver (1), terminal resistance (2) and connector (3), connector (3) include four pins, are pin one (31), pin two (32), pin three (33) and pin four (34) respectively, and two pin electricity in four pins of CAN transceiver (1) through pencil and connector (3) are connected, and terminal resistance (2) are connected through two other pin electricity in four pins of pencil and connector (3).
When a plurality of CAN node modules are connected into a CAN communication network, two pins of a connector (3) of the CAN node modules to be used are electrically connected to a CAN-H and a CAN-L of a CAN communication bus respectively through the wiring harnesses by using the wiring harnesses, and the CAN transceiver (1) is connected into the CAN communication network.
In a CAN communication network formed by all CAN node modules, selecting a head CAN node module and a tail CAN node module, electrically connecting two pins connected with a terminal resistor (2) on the selected CAN node modules with a CAN-H and a CAN-L of the CAN communication network by using a wiring harness, and accessing the terminal resistor (2) into the CAN communication network.
As shown in fig. 1, as a specific embodiment of the present invention, the CAN communication network includes five CAN node modules: a node module I (4), a node module II (5), a node module III (6), a node module IV (7) and a node module V (8); the first node module (4) and the fifth node module (8) are two CAN node modules at the head and the tail of the CAN communication network.
All the node modules are internally and electrically connected with a CAN transceiver (1) by adopting a pin I (31), a pin IV (34) and a terminal resistor (2), the pin II (32) and the pin III (33) of all the node modules are configured in a mode that the pin I (31) and the pin IV (34) are electrically connected with a CAN communication network CAN-L and a CAN-H respectively through wiring harnesses, the node module I (4) and the pin II (32) and the pin III (33) of the node module V (8) are electrically connected with the CAN-L and the CAN-H through wiring harnesses, the terminal resistor (2) is accessed into the CAN communication network, and the connection of the whole CAN communication network is completed.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, so it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention are all included in the scope of the present invention.
Claims (3)
1. The utility model provides a CAN node module with terminal resistor, includes CAN transceiver, terminal resistor and connector, the CAN transceiver with the connector is connected, terminal resistor with the connector is connected, its characterized in that, the connector includes four reservation pins.
2. The CAN node module with termination resistance of claim 1, wherein the CAN transceiver is connected to two of the reserved pins by a wire harness.
3. The CAN node module of claim 1, wherein the termination resistor is connected to two other pins of the reserved pins by a wire harness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920577195.4U CN210111990U (en) | 2019-04-25 | 2019-04-25 | CAN node module with terminal resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920577195.4U CN210111990U (en) | 2019-04-25 | 2019-04-25 | CAN node module with terminal resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210111990U true CN210111990U (en) | 2020-02-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920577195.4U Active CN210111990U (en) | 2019-04-25 | 2019-04-25 | CAN node module with terminal resistor |
Country Status (1)
| Country | Link |
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| CN (1) | CN210111990U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111332230A (en) * | 2020-03-23 | 2020-06-26 | 武汉格罗夫氢能汽车有限公司 | CAN communication terminal resistor module of hydrogen fuel electric vehicle |
| CN114285694A (en) * | 2021-12-31 | 2022-04-05 | 上海捷氢科技股份有限公司 | Fuel cell system and CAN network terminal resistor circuit thereof |
-
2019
- 2019-04-25 CN CN201920577195.4U patent/CN210111990U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111332230A (en) * | 2020-03-23 | 2020-06-26 | 武汉格罗夫氢能汽车有限公司 | CAN communication terminal resistor module of hydrogen fuel electric vehicle |
| CN114285694A (en) * | 2021-12-31 | 2022-04-05 | 上海捷氢科技股份有限公司 | Fuel cell system and CAN network terminal resistor circuit thereof |
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Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518107 Xinwangda Industrial Park, No.18, Tangjia south, Gongming street, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |