CN218850786U - Communication equipment and communication system - Google Patents
Communication equipment and communication system Download PDFInfo
- Publication number
- CN218850786U CN218850786U CN202223473424.9U CN202223473424U CN218850786U CN 218850786 U CN218850786 U CN 218850786U CN 202223473424 U CN202223473424 U CN 202223473424U CN 218850786 U CN218850786 U CN 218850786U
- Authority
- CN
- China
- Prior art keywords
- communication
- circuit
- acquisition
- loop
- return circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a communication equipment and communication system, the utility model discloses set up third communication return circuit on the circuit row, thereby it makes to realize the impedance matching in the third communication return circuit to have terminal resistance on each third communication return circuit, has terminal resistance in first communication return circuit and the second communication return circuit equally, realizes the impedance matching in consequently first communication return circuit and the second communication return circuit. When all setting up a third communication return circuit between the adjacent acquisition circuit, be equivalent to each acquisition circuit and be connected with two third communication return circuits simultaneously, when the third communication return circuit takes place the broken string, the acquisition circuit that corresponds can be through another third communication return circuit and master controller communication, and the equal impedance match of every third communication return circuit, there is independent first communication return circuit or second communication return circuit between master controller and the acquisition circuit, thereby when avoiding the broken string to take place, the master controller is because the communication quality that leads to with the impedance mismatch between the third communication link is poor, the problem that can't acquire the breakpoint position.
Description
Technical Field
The utility model relates to a battery management system technical field especially relates to communication equipment and communication system.
Background
The power battery management system needs to collect the voltage and temperature of a single battery pack and upload data to a Main Controller (MCU) in a communication mode, and the currently adopted main communication scheme is a single daisy chain communication mode or a double daisy chain communication mode.
However, the existing single daisy chain communication method or double daisy chain communication method has certain technical disadvantages, in the single daisy chain communication method, when the wire harness between the acquisition circuits is disconnected, the acquisition instructions and data can only be transmitted between the main controller and the acquisition circuit before the disconnection point, the acquisition circuit after the disconnection point can not communicate with the main controller, so that the system fails, and the terminal resistance on the acquisition circuit is not in the communication link with the main controller at the moment, so that the terminal resistance is not matched, and the communication stability is poor.
Although the dual-daisy-chain communication can continue to communicate after the disconnection, when the disconnection occurs, the terminal resistance between the controller and the communication loop is still not matched, so that the communication stability is poor and the breakpoint position cannot be effectively identified.
SUMMERY OF THE UTILITY MODEL
The utility model provides a communication equipment and communication system can effectively solve present daisy chain communication when the broken string takes place, and the terminal resistance between controller and the communication return circuit still does not match, leads to the unable effective recognition breakpoint position of communication stability variation.
According to the utility model discloses an aspect provides a communication equipment, communication equipment includes: a controller; the circuit comprises a plurality of acquisition circuits, a plurality of control circuits and a plurality of control circuits, wherein the acquisition circuits are sequentially arranged along a first direction to form a circuit column, and each acquisition circuit comprises an input end and an output end; the circuit column comprises a first end and a second end, the input end of the acquisition circuit located at the first end is connected with the controller to form a first communication loop, and/or the output end of the acquisition circuit located at the second end is connected with the controller to form a second communication loop, at least one third communication loop is arranged in the first direction, and the at least one third communication loop is connected with the acquisition circuits.
Furthermore, a plurality of third communication loops are arranged along the first direction, and a third communication loop is arranged between two adjacent acquisition circuits.
Further, the plurality of acquisition circuits are connected in series.
Further, the first communication loop, the second communication loop and the third communication loop respectively include two terminal resistors, and the first communication loop, the second communication loop and the third communication loop perform impedance matching through the two terminal resistors.
Further, the terminal resistors are arranged at the input end and the output end of the acquisition circuit.
Further, the number of the acquisition circuits is equal to the sum of the number of the first communication circuits or the number of the second communication circuits and the number of the third communication circuits.
Furthermore, the controller comprises an isolation circuit, the controller is connected with the input end of the acquisition circuit positioned at the first end and the controller through the isolation circuit to form a first communication loop, and/or the output end of the acquisition circuit positioned at the second end is connected with the controller to form a second communication loop.
Further, the controller includes a first control signal transmitted from the first communication loop to the third communication loop and a second control signal transmitted from the second communication loop to the third communication loop.
According to the utility model discloses a further aspect provides a communication system, communication system includes any embodiment the communication equipment.
The utility model has the advantages of, the utility model discloses set up the third communication return circuit on the circuit is listed, thereby it makes to realize impedance matching in the third communication return circuit to have terminal resistance on each third communication return circuit, has terminal resistance in first communication return circuit and the second communication return circuit equally, consequently realizes impedance matching in first communication return circuit and the second communication return circuit. When all setting up a third communication return circuit between adjacent acquisition circuit, be equivalent to each acquisition circuit and be connected with two third communication return circuits simultaneously, when the third communication return circuit takes place the broken string, the acquisition circuit that corresponds can pass through another third communication return circuit and master controller communication, and the equal impedance match of every third communication return circuit, there is independent first communication return circuit or second communication return circuit between master controller and the acquisition circuit, thereby when avoiding the broken string to take place, the master controller is because the communication quality that the impedance mismatch leads to between with the third communication link is poor, can't acquire the problem of breakpoint position.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a communication device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a communication system according to an embodiment of the present invention when a line is broken.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1, which is a schematic structural diagram of a communication device provided in an embodiment of the present invention, the communication device includes a controller 10 and a plurality of acquisition circuits 20.
Illustratively, the plurality of acquisition circuits 20 are sequentially arranged along the first direction Y to form a circuit column, and each of the acquisition circuits 20 includes an input terminal 201 and an output terminal 202. Specifically, the first direction Y is as shown in fig. 1, the acquisition circuits 20 form a circuit column along the first direction Y, for example, the plurality of acquisition circuits 20 includes a first acquisition circuit 20, a second acquisition circuit 20 and a third acquisition circuit 20, and the three acquisition circuits 20 form the circuit column in such a manner that an output end 202 of the first acquisition circuit 20 is opposite to an input end 201 of the second acquisition circuit 20, and an output end 202 of the second acquisition circuit 20 is opposite to the input end 201 of the third acquisition circuit 20, which are sequentially arranged along the first direction Y.
Illustratively, the circuit array includes a first terminal and a second terminal, an input terminal 201 of the acquisition circuit 20 at the first terminal is connected to the controller 10 to form a first communication loop 30, and/or an output terminal 202 of the acquisition circuit 20 at the second terminal is connected to the controller 10 to form a second communication loop 50.
It will be appreciated that the input 201 of the acquisition circuit 20 at the first end is the input 201 of the first acquisition circuit 20 mentioned above. The output 202 of the acquisition circuit 20 at said second end, i.e. the output 202 of the third acquisition circuit 20 mentioned above.
Illustratively, at least one third communication circuit 40 is disposed along the first direction Y, and the at least one third communication circuit 40 is connected to the plurality of acquisition circuits 20. It will be appreciated that the aforementioned input 201 of the first acquisition circuit 20 is connected to a master to form the first communication loop 30, and the output 202 of the third acquisition circuit 20 is connected to said master to form the second communication loop 50, so that the third communication loop 40 connects the output 202 of the first acquisition circuit 20 to the input 201 of the third acquisition circuit 20. When there are a plurality of third communication loops 40, the output end 202 is disposed opposite to the input end 201 between adjacent third communication loops 40.
In some embodiments, a plurality of third communication circuits 40 are disposed along the first direction Y, and one third communication circuit 40 is disposed between two adjacent acquisition circuits 20. That is, a third communication loop 40 is connected between two adjacent acquisition circuits 20, and one third communication loop 40 is respectively disposed at the input end 201 and the output end 202 of one acquisition circuit 20.
Illustratively, the plurality of acquisition circuits 20 are connected in series. In particular a plurality of acquisition circuits 20 are arranged in series by means of a third communication circuit 40.
Illustratively, the number of acquisition circuits 20 is equal to the number of first communication loops or the sum of the number of second communication loops 50 and the number of third communication loops 40. For example, if the number of the acquisition circuits 20 is n, the number of the third communication loops 40 is n-1.
Illustratively, the first communication loop 30, the second communication loop 50, and the third communication loop 40 respectively include two terminal resistors, and the first communication loop 30, the second communication loop 50, and the third communication loop 40 perform impedance matching through the two terminal resistors. Optionally, the termination resistors are disposed at the input end 201 and the output end 202 of the acquisition circuit 20 to ensure the communication quality.
In some embodiments, the controller 10 includes an isolation circuit 101, and the controller 10 is connected to the controller 10 via the isolation circuit 101 and an input 201 of the acquisition circuit 20 at the first end to form a first communication loop 30, and/or an output 202 of the acquisition circuit 20 at the second end is connected to the controller 10 to form a second communication loop 50.
The isolation circuit 101 is used for electrical isolation, and it should be noted that electrical isolation refers to a manner of avoiding current from directly flowing from one area to another area in a circuit, that is, a path through which current directly flows is not established between two areas, and electrically isolates a power supply from an acquisition loop, so that the power supply and the acquisition loop become an electrically isolated and independent non-ground safety system to prevent an indirect electric shock hazard in the case of a fault and electrification of an exposed conductor.
The utility model has the advantages of, the utility model discloses set up the third communication return circuit on the circuit is listed, thereby it makes to realize impedance matching in the third communication return circuit to have terminal resistance on each third communication return circuit, has terminal resistance in first communication return circuit and the second communication return circuit equally, consequently realizes impedance matching in first communication return circuit and the second communication return circuit. When all setting up a third communication return circuit between the adjacent acquisition circuit, be equivalent to each acquisition circuit and be connected with two third communication return circuits simultaneously, when the third communication return circuit takes place the broken string, the acquisition circuit that corresponds can be through another third communication return circuit and master controller communication, and the equal impedance match of every third communication return circuit, there is independent first communication return circuit or second communication return circuit between master controller and the acquisition circuit, thereby when avoiding the broken string to take place, the master controller is because the communication quality that leads to with the impedance mismatch between the third communication link is poor, the problem that can't acquire the breakpoint position.
As shown in fig. 2, the communication system according to the present invention includes a communication device and a battery module 60.
The communication device is the communication device described in the above embodiments, and please refer to the above contents for a specific structure, which is not described herein.
In this embodiment, the communication device includes two isolation circuits 101, which are a first isolation circuit 101 and a second isolation circuit 101, respectively, so that the circuit array includes a first end and a second end, an input end 201 of the acquisition circuit 20 located at the first end is connected to the controller 10 to form a first communication loop 30, and an output end 202 of the acquisition circuit 20 located at the second end is connected to the controller 10 to form a second communication loop 50.
Illustratively, the battery cell module 60 includes a plurality of detection objects, and the plurality of acquisition circuits 20 are respectively connected to at least one monitoring object 601, and are configured to acquire characteristic data of the at least one monitoring object 601. Optionally, the acquisition circuits 20 are circuits capable of acquiring data, and each acquisition circuit 20 has its own number, which is used to identify whether an acquisition instruction is sent to the corresponding acquisition circuit 20.
Referring to fig. 3, in an embodiment, n acquisition circuits 20 are provided, and the main controller is connected end to end with the plurality of acquisition circuits 20 (i.e. connected with the first acquisition circuit 1 and the nth acquisition circuit n) through the first isolation circuit 101 and the second isolation circuit 101, and is configured to send an acquisition instruction to the plurality of acquisition circuits 20 to trigger the plurality of acquisition circuits 20 to acquire the characteristic data of the at least one monitored object 601. Therefore, in the embodiment of the present invention, the collecting circuit 20 can be used to collect the characteristic data of at least one monitoring object 601, wherein the collecting circuit 20 is plural, and the collecting circuits 20 are respectively connected to at least one monitoring object 601 and electrically isolated by the isolating circuit 101.
In practical operation, each acquisition circuit 20 is provided with a terminal resistor Rn _ in and a terminal resistor Rn _ out, the main controller and the first acquisition circuit 1 form an independent first communication loop 30 through the isolation circuit 101, and R_end 1 and R1_ in are two terminal resistors of the first communication loop 30. The first acquisition circuit 1 and the second acquisition circuit 2 form an independent third communication loop 40, R1_ out and R2_ in are two terminal resistors of the third communication loop 40, and so on, the n-th acquisition circuit n at the extreme end and the other isolation circuit 101 form an independent second communication loop 50, and rn _outand R _ end2 are two terminal resistors of the second communication loop 50, and when the system is provided with n acquisition circuits 20, n-1 independent third communication loops 40 are provided in total.
When the system has no first communication loop 30 or second communication loop 50 or third communication loop 40 disconnected, the main controller communicates with each acquisition circuit 20 through the isolation circuit 101 to realize the data acquisition function, and at this time, the second communication loop 50 does not work. The specific working process comprises the following steps: the main controller sends the acquisition instruction to the first acquisition circuit 1 through the third communication loop 40, the first acquisition circuit 1 identifies whether the acquisition instruction is sent to the main controller according to the number of the first acquisition circuit 1, if so, the acquisition data is returned to the main controller, if not, the acquisition instruction is transmitted to the acquisition circuit 202 through the adjacent third communication loop 40, and so on, when the acquisition circuit 20n identifies that the acquisition instruction is sent to the main controller, the acquired data is returned to the main controller through the third communication loop 40 in sequence.
When a first communication loop 30, a second communication loop 50 or a third communication loop 40 is disconnected in the system, and if the third communication loop 40 between an i-1 acquisition circuit i-1 and an i-1 acquisition circuit i is disconnected, a master controller can only realize communication and data acquisition with the i-1 acquisition circuit i-1 through a first isolation circuit 101, and the i-1 acquisition circuit i and a subsequent acquisition circuit 20 cannot realize communication with the master controller through the first isolation circuit 101, so that when the disconnection occurs, the following control strategies are adopted: because each first communication loop 30, second communication loop 50 or third communication loop 40 is independent, the third communication loop 40 with broken wires does not affect the terminal resistance of other communication loops (first communication loop 30, second communication loop 50 or third communication loop 40) and the communication quality of first communication loop 30, second communication loop 50 or third communication loop 40, and the master can accurately judge the position of broken wires according to the returned data.
After the disconnection position is identified, the main controller communicates with the first acquisition circuit 1 and the second acquisition circuit 2 … … and the i-1 acquisition circuit i-1 through the first isolation circuit 101. The main controller is communicated with the nth acquisition circuit n and the nth-1 acquisition circuit n-1 … … ith acquisition circuit i through the second isolation circuit 101, and therefore data communication of the whole system is achieved. That is, the controller 10 includes a first control signal transmitted from the first communication circuit 30 to the third communication circuit 40 and a second control signal transmitted from the second communication circuit 50 to the third communication circuit 40.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention shall be determined by the scope of the appended claims.
Claims (10)
1. A communication device, comprising:
a controller (10);
the circuit comprises a plurality of acquisition circuits (20), wherein the acquisition circuits (20) are sequentially arranged along a first direction (Y) to form a circuit column, and each acquisition circuit (20) comprises an input end (201) and an output end (202);
the circuit array comprises a first end and a second end, an input end (201) of the acquisition circuit (20) positioned at the first end is connected with the controller (10) to form a first communication loop (30), and/or an output end (202) of the acquisition circuit (20) positioned at the second end is connected with the controller (10) to form a second communication loop (50),
at least one third communication loop (40) is arranged along the first direction (Y), and the at least one third communication loop (40) is connected with the plurality of acquisition circuits (20).
2. The communication device according to claim 1, wherein a plurality of third communication circuits (40) are arranged along the first direction (Y), and one third communication circuit (40) is arranged between two adjacent acquisition circuits (20).
3. The communication device according to claim 2, wherein the plurality of acquisition circuits (20) are connected in series.
4. The communication device according to claim 2, wherein the first communication loop (30), the second communication loop (50) and the third communication loop (40) each comprise two termination resistors, and the first communication loop (30), the second communication loop (50) and the third communication loop (40) are impedance matched by the two termination resistors.
5. The communication device according to claim 4, wherein the termination resistors are arranged at the input (201) and the output (202) of the acquisition circuit (20).
6. The communication device according to claim 1, wherein the number of acquisition circuits (20) is equal to the number of first communication loops (30) or the sum of the number of second communication loops (50) and the number of third communication loops (40).
7. The communication device according to any of claims 1 to 6, wherein the controller (10) comprises an isolation circuit (101), and the controller (10) is connected to the controller (10) via the isolation circuit (101) with an input (201) of the acquisition circuit (20) at the first end to form a first communication loop (30), and/or an output (202) of the acquisition circuit (20) at the second end is connected to the controller (10) to form a second communication loop (50).
8. The communication device according to any of claims 1-6, wherein the controller (10) comprises a first control signal and a second control signal, the first control signal being transmitted from the first communication loop (30) to the third communication loop (40), the second control signal being transmitted from the second communication loop (50) to the third communication loop (40).
9. A communication system comprising a communication device according to any of claims 1-8.
10. The communication system of claim 9, further comprising: the battery cell module (60) comprises a plurality of detection objects (601), and the plurality of acquisition circuits (20) are respectively connected with at least one monitoring object.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022229852584 | 2022-11-09 | ||
| CN202222985258 | 2022-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218850786U true CN218850786U (en) | 2023-04-11 |
Family
ID=87307218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223473424.9U Active CN218850786U (en) | 2022-11-09 | 2022-12-22 | Communication equipment and communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218850786U (en) |
-
2022
- 2022-12-22 CN CN202223473424.9U patent/CN218850786U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104603627A (en) | Semiconductor device and battery voltage monitoring device | |
| CN211151975U (en) | Vehicle-mounted Ethernet testing device | |
| CN105676091A (en) | Battery pack insulation detection apparatus and insulation detection method thereof | |
| CN113514726B (en) | Complete machine cable detection system and method | |
| CN111983389A (en) | Device for detecting alignment and fault of multi-core cable | |
| CN109613348A (en) | A kind of high-voltaghe compartment tooling automatic detection device | |
| CN110673054B (en) | DC/DC power supply test system and aging test method of DC/DC power supply | |
| WO2023065620A1 (en) | Ethercat bus-based wiring harness test method and apparatus | |
| CN111016658B (en) | High-voltage interlocking loop, fault detection method and vehicle | |
| CN218850786U (en) | Communication equipment and communication system | |
| WO2023231279A1 (en) | Vehicle body control unit fault code test system and method | |
| CN112838848B (en) | Insulated gate bipolar transistor series valve structure | |
| CN108365659B (en) | Battery module parallel tool and battery module parallel system | |
| CN218470879U (en) | Testing device and testing system of battery management system | |
| CN216117913U (en) | Wire harness test switching system based on analog switch | |
| CN213581304U (en) | Detection device for internal flat cable of explosion-proof frequency converter | |
| CN220105128U (en) | Output detection circuit and isolated multi-output power supply detection device | |
| CN219496947U (en) | Wide-range high-precision resistor output device | |
| CN211790957U (en) | Power supply sensing device | |
| CN216979252U (en) | Lithium ion battery pack series-connection charging and discharging test control device and test cabinet | |
| CN211627797U (en) | Testing device for portable multi-channel insulation monitoring system | |
| CN215219007U (en) | Large-current program-controlled automatic testing device | |
| CN220894466U (en) | Communication fault detection circuit of lithium battery system | |
| CN115542133B (en) | Fault self-diagnosis system and method for high-voltage interlocking loop and energy storage system | |
| CN113328887B (en) | Load board testing system and method based on M-LVDS bus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |