A method and device for synchronously starting a battery operating condition simulation test system

Abstract

The present invention provides a method and device for synchronously starting a battery working condition simulation test system in the field of battery testing technology, the method comprising: step S1, the power controller of the battery working condition simulation test system verifies the received power output instruction; step S2, the power controller sends a start command carrying start parameters to the corresponding power unit through a communication line based on the power output instruction; step S3, the power unit starts the hardware based on the received start command, and after the start is completed, each power unit feeds back a ready response to the power controller; step S4, after the power controller receives the ready response sent by the power unit, it sends a start pulse to the signal concurrent controller through an optical fiber; the signal concurrent controller forwards the start pulse to the corresponding power unit in real time through the optical fiber; step S5, each power unit synchronously executes power output based on the start pulse. The advantage of the present invention is that it greatly improves the synchronous response speed of the working condition simulation test system.

Description

Technical Field

[0001] The present invention relates to the technical field of battery testing, and in particular to a method and device for synchronously starting a battery operating condition simulation test system. Background Art

[0002] After the battery is produced, in order to cope with complex usage environments, it is necessary to use a working condition simulation test system to simulate the actual usage conditions to test the battery. With the rapid development of electric vehicles, the voltage level and energy density of batteries as the power source of electric vehicles are also constantly improving, and the power of a single battery cell is getting higher and higher, which in turn drives the power of the working condition simulation test system to become higher and higher.

[0003] Considering the equipment cost and maintainability, the working condition simulation test system adopts a parallel structure, that is, multiple low-power power units are connected in parallel to achieve high-power output. Since each power unit has an independent communication and control system, the entire working condition simulation test system needs to synchronize the operation of each power unit.

[0004] In order to ensure the synchronous operation of each power unit, the traditional approach is to shorten the delay between the start-up commands of each power unit to ensure the synchronization of the output of the working condition simulation test system after parallel connection. However, the traditional method can only achieve macroscopic synchronization, and the synchronization accuracy is controlled at the millisecond level. When using an oscilloscope to capture the output current, a step-like current waveform can still be seen, and the response speed of the entire working condition simulation test system is still unsatisfactory.

[0005] Therefore, how to provide a method and device for synchronously starting a battery operating condition simulation test system to improve the synchronous response speed of the operating condition simulation test system has become a technical problem that needs to be solved urgently. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a method and device for synchronously starting a battery operating condition simulation test system, so as to improve the synchronous response speed of the operating condition simulation test system.

[0007] In a first aspect, the present invention provides a method for synchronously starting a battery operating condition simulation test system, comprising the following steps:

[0008] Step S1, the power controller of the battery operating condition simulation test system verifies the received power output instruction;

[0009] Step S2: the power controller sends a start command carrying start parameters to the corresponding power unit through a communication line based on the power output instruction;

[0010] Step S3: The power unit starts the hardware based on the received start command, and after the start is completed, each power unit feeds back a ready response to the power controller;

[0011] Step S4: After receiving the ready response sent by the relevant power unit, the power controller sends a start pulse to the signal concurrency controller through the optical fiber; the signal concurrency controller forwards the received start pulse to the corresponding power unit in real time through the optical fiber;

[0012] Step S5: Each power unit synchronously performs power output based on the received start pulse.

[0013] Furthermore, the step S1 is specifically as follows:

[0014] The power controller of the battery working condition simulation test system parses the received power output instruction to obtain the startup parameter, the power unit number, the signature value, the timestamp and the hash value, wherein the hash value is obtained by performing a hash calculation on the startup parameter, the power unit number, the signature value and the timestamp;

[0015] After the startup parameters, power unit number, signature value and timestamp are checked for integrity through the hash value, the timeliness is checked through the timestamp, and then the signature value is verified through the preset public key to complete the verification of the power output instruction.

[0016] Furthermore, the step S2 is specifically as follows:

[0017] Based on the startup parameters and power unit number carried by the power output instruction, the power controller sends a startup command carrying the startup parameters to the power unit with the corresponding power unit number through the communication line; the startup parameters include at least output voltage, output current and output duration.

[0018] Furthermore, the step S3 is specifically as follows:

[0019] The power unit starts the hardware based on the received start command, and after the start is completed, each power unit feeds back a ready response to the power controller in real time through the communication line.

[0020] Furthermore, the step S5 is specifically as follows:

[0021] Each power unit receives the start pulse in real time through interruption, and after receiving the start pulse, each power unit synchronously performs power output based on the start parameter.

[0022] In a second aspect, the present invention provides a synchronous starting device for a battery operating condition simulation test system, comprising the following modules:

[0023] A power output command verification module is used for the power controller of the battery working condition simulation test system to verify the received power output command;

[0024] A start command sending module, used for the power controller to send a start command carrying start parameters to the corresponding power unit through a communication line based on the power output instruction;

[0025] A ready response feedback module is used for the power unit to start the hardware based on the received start command, and after the start is completed, each power unit feeds back a ready response to the power controller;

[0026] A start pulse sending module is used for the power controller to send a start pulse to the signal concurrency controller through the optical fiber after receiving the ready response sent by the relevant power unit; the signal concurrency controller forwards the received start pulse to the corresponding power unit in real time through the optical fiber;

[0027] The power synchronous output module is used for each power unit to synchronously perform power output based on the received start pulse.

[0028] Furthermore, the power output instruction verification module is specifically used for:

[0029] The power controller of the battery working condition simulation test system parses the received power output instruction to obtain the startup parameter, the power unit number, the signature value, the timestamp and the hash value, wherein the hash value is obtained by performing a hash calculation on the startup parameter, the power unit number, the signature value and the timestamp;

[0030] After the startup parameters, power unit number, signature value and timestamp are checked for integrity through the hash value, the timeliness is checked through the timestamp, and then the signature value is verified through the preset public key to complete the verification of the power output instruction.

[0031] Furthermore, the startup command sending module is specifically used for:

[0032] Based on the startup parameters and power unit number carried by the power output instruction, the power controller sends a startup command carrying the startup parameters to the power unit with the corresponding power unit number through the communication line; the startup parameters include at least output voltage, output current and output duration.

[0033] Furthermore, the ready response feedback module is specifically used for:

[0034] The power unit starts the hardware based on the received start command, and after the start is completed, each power unit feeds back a ready response to the power controller in real time through the communication line.

[0035] Furthermore, the power synchronous output module is specifically used for:

[0036] Each power unit receives the start pulse in real time through interruption, and after receiving the start pulse, each power unit synchronously performs power output based on the start parameter.

[0037] The advantages of the present invention are:

[0038] After the power controller of the battery working condition simulation test system verifies the received power output instruction, based on the power output instruction, a start command carrying start parameters is sent to the corresponding power unit through the communication line; the power unit performs hardware start-up based on the start command, and each power unit feeds back a ready response to the power controller after the start is completed; after the power controller receives the ready response sent by the relevant power unit, it sends a start pulse to the signal concurrent controller through the optical fiber, and the signal concurrent controller forwards the received start pulse to the corresponding power unit in real time through the optical fiber, and each power unit synchronously performs power output based on the start pulse; that is, when the power controller needs to control the parallel power unit to output power, it first sends a start command through the communication line. At this time, the power unit only performs hardware start-up operation and does not output power. After the start is completed, a ready response is fed back to the power controller, and the power controller then sends a start pulse to the signal concurrent controller through the optical fiber. The signal concurrent controller transfers the start pulse to the corresponding power unit in real time through the optical fiber, so that each power unit can output power synchronously. Since the optical fiber transmits optical signals, the transmission speed is very fast, and microsecond-level synchronization can be achieved, thereby greatly improving the synchronous response speed of the working condition simulation test system. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0040] Figure 1 The present invention is a flowchart of a method for synchronously starting a battery operating condition simulation test system.

[0041] Figure 2 It is a structural schematic diagram of a synchronous starting device of a battery operating condition simulation test system of the present invention.

[0042] Figure 3 It is a circuit principle block diagram of the battery operating condition simulation test system of the present invention. DETAILED DESCRIPTION

[0043] The technical solution in the embodiment of the present application has the following overall idea: when the power controller needs to control the parallel power units to output power, it first sends a start command through the communication line. At this time, the power unit only performs hardware startup operations and does not output power. After the startup is completed, it feedbacks a ready response to the power controller. The power controller then sends a start pulse to the signal concurrent controller through the optical fiber. The signal concurrent controller converts the start pulse to the corresponding power unit synchronously through the optical fiber in real time, so that each power unit can output power synchronously. Since the optical fiber transmits optical signals, the transmission speed is very fast, and it can achieve microsecond-level synchronization to improve the synchronous response speed of the working condition simulation test system.

[0044] Please refer to Figures 1 to 3 As shown, a preferred embodiment of a method for synchronously starting a battery operating condition simulation test system of the present invention comprises the following steps:

[0045] Step S1, the power controller of the battery operating condition simulation test system verifies the received power output instruction;

[0046] Step S2: the power controller sends a start command carrying start parameters to the corresponding power unit through a communication line based on the power output instruction;

[0047] Step S3, the power unit starts the hardware based on the received start command, and after the start is completed, each power unit feeds back a ready response to the power controller; at this time, the power unit does not output power;

[0048] Step S4: After receiving the ready response sent by the relevant power unit, the power controller sends a start pulse to the signal concurrent controller through the optical fiber; the signal concurrent controller forwards the received start pulse to the corresponding power unit through the optical fiber in real time; that is, the present invention adds a new concurrent optical fiber, and transmits the start pulse through the optical fiber to achieve microsecond synchronization, so that the waveform of the output current rises smoothly, and solves the step curve problem;

[0049] Step S5: Each power unit synchronously performs power output based on the received start pulse.

[0050] The step S1 is specifically as follows:

[0051] The power controller of the battery working condition simulation test system parses the received power output instruction to obtain the startup parameter, the power unit number, the signature value, the timestamp and the hash value, wherein the hash value is obtained by performing a hash calculation on the startup parameter, the power unit number, the signature value and the timestamp;

[0052] By setting the power output instruction to carry a signature value, a timestamp, and a hash value, triple verification can be performed subsequently through the signature value, timestamp, and hash value to avoid power output based on illegal instructions, thereby greatly improving the safety of the battery operating condition simulation test system;

[0053] After the startup parameters, power unit number, signature value and timestamp are checked for integrity through the hash value, the timeliness is checked through the timestamp, and then the signature value is verified through the preset public key to complete the verification of the power output instruction.

[0054] The step S2 is specifically as follows:

[0055] Based on the startup parameters and power unit number carried by the power output instruction, the power controller sends a startup command carrying the startup parameters to the power unit with the corresponding power unit number through the communication line; the startup parameters include at least output voltage, output current and output duration.

[0056] The step S3 is specifically as follows:

[0057] The power unit starts the hardware based on the received start command, and after the start is completed, each power unit feeds back a ready response to the power controller in real time through the communication line.

[0058] The step S5 is specifically as follows:

[0059] Each power unit receives the start pulse in real time through interruption, and after receiving the start pulse, each power unit synchronously performs power output based on the start parameter.

[0060] A preferred embodiment of a synchronous starting device for a battery operating condition simulation test system of the present invention includes the following modules:

[0061] A power output command verification module is used for the power controller of the battery working condition simulation test system to verify the received power output command;

[0062] A start command sending module, used for the power controller to send a start command carrying start parameters to the corresponding power unit through a communication line based on the power output instruction;

[0063] A ready response feedback module is used for the power unit to start the hardware based on the received start command, and after the start is completed, each power unit feeds back a ready response to the power controller; at this time, the power unit does not output power;

[0064] The start pulse sending module is used for the power controller to send a start pulse to the signal concurrent controller through the optical fiber after receiving the ready response sent by the relevant power unit; the signal concurrent controller forwards the received start pulse to the corresponding power unit through the optical fiber in real time; that is, the present invention adds a new concurrent optical fiber, and transmits the start pulse through the optical fiber to achieve microsecond synchronization, so that the waveform of the output current rises smoothly, and solves the step curve problem;

[0065] The power synchronous output module is used for each power unit to synchronously perform power output based on the received start pulse.

[0066] The power output instruction verification module is specifically used for:

[0067] The power controller of the battery working condition simulation test system parses the received power output instruction to obtain the startup parameter, the power unit number, the signature value, the timestamp and the hash value, wherein the hash value is obtained by performing a hash calculation on the startup parameter, the power unit number, the signature value and the timestamp;

[0068] By setting the power output instruction to carry a signature value, a timestamp, and a hash value, triple verification can be performed subsequently through the signature value, timestamp, and hash value to avoid power output based on illegal instructions, thereby greatly improving the safety of the battery operating condition simulation test system;

[0069] After the startup parameters, power unit number, signature value and timestamp are checked for integrity through the hash value, the timeliness is checked through the timestamp, and then the signature value is verified through the preset public key to complete the verification of the power output instruction.

[0070] The startup command sending module is specifically used for:

[0071] Based on the startup parameters and power unit number carried by the power output instruction, the power controller sends a startup command carrying the startup parameters to the power unit with the corresponding power unit number through the communication line; the startup parameters include at least output voltage, output current and output duration.

[0072] The ready response feedback module is specifically used for:

[0073] The power unit starts the hardware based on the received start command, and after the start is completed, each power unit feeds back a ready response to the power controller in real time through the communication line.

[0074] The power synchronous output module is specifically used for:

[0075] Each power unit receives the start pulse in real time through interruption, and after receiving the start pulse, each power unit synchronously performs power output based on the start parameter.

[0076] In summary, the advantages of the present invention are:

[0077] After the power controller of the battery working condition simulation test system verifies the received power output instruction, based on the power output instruction, a start command carrying start parameters is sent to the corresponding power unit through the communication line; the power unit performs hardware start-up based on the start command, and each power unit feeds back a ready response to the power controller after the start is completed; after the power controller receives the ready response sent by the relevant power unit, it sends a start pulse to the signal concurrent controller through the optical fiber, and the signal concurrent controller forwards the received start pulse to the corresponding power unit in real time through the optical fiber, and each power unit synchronously performs power output based on the start pulse; that is, when the power controller needs to control the parallel power unit to output power, it first sends a start command through the communication line. At this time, the power unit only performs hardware start-up operation and does not output power. After the start is completed, a ready response is fed back to the power controller, and the power controller then sends a start pulse to the signal concurrent controller through the optical fiber. The signal concurrent controller transfers the start pulse to the corresponding power unit in real time through the optical fiber, so that each power unit can output power synchronously. Since the optical fiber transmits optical signals, the transmission speed is very fast, and microsecond-level synchronization can be achieved, thereby greatly improving the synchronous response speed of the working condition simulation test system.

[0078] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A method for synchronously starting a battery operating condition simulation test system, characterized in that: The steps include: Step S1, the power controller of the battery operating condition simulation test system verifies the received power output instruction; Step S2: the power controller sends a start command carrying start parameters to the corresponding power unit through a communication line based on the power output instruction; Step S3: The power unit starts the hardware based on the received start command, and after the start is completed, each power unit feeds back a ready response to the power controller; Step S4: After receiving the ready response sent by the relevant power unit, the power controller sends a start pulse to the signal concurrent controller through the optical fiber; The signal concurrent controller forwards the received start pulse to the corresponding power unit in real time through the optical fiber; Step S5: Each power unit synchronously performs power output based on the received start pulse.

2. A method for synchronously starting a battery operating condition simulation test system according to claim 1, characterized in that: The step S1 is specifically as follows: The power controller of the battery working condition simulation test system parses the received power output instruction to obtain the startup parameter, the power unit number, the signature value, the timestamp and the hash value, wherein the hash value is obtained by performing a hash calculation on the startup parameter, the power unit number, the signature value and the timestamp; After the startup parameters, power unit number, signature value and timestamp are checked for integrity through the hash value, the timeliness is checked through the timestamp, and then the signature value is verified through the preset public key to complete the verification of the power output instruction.

3. A method for synchronously starting a battery operating condition simulation test system according to claim 1, characterized in that: The step S2 is specifically as follows: Based on the startup parameters and power unit number carried by the power output instruction, the power controller sends a startup command carrying the startup parameters to the power unit with the corresponding power unit number through the communication line; the startup parameters include at least output voltage, output current and output duration.

4. A method for synchronously starting a battery operating condition simulation test system according to claim 1, characterized in that: The step S3 is specifically as follows: The power unit starts the hardware based on the received start command, and after the start is completed, each power unit feeds back a ready response to the power controller in real time through the communication line.

5. A method for synchronously starting a battery operating condition simulation test system according to claim 1, characterized in that: The step S5 is specifically as follows: Each power unit receives the start pulse in real time through interruption, and after receiving the start pulse, each power unit synchronously performs power output based on the start parameter.

6. A synchronous starting device for a battery operating condition simulation test system, characterized in that: Includes the following modules: A power output command verification module is used for the power controller of the battery working condition simulation test system to verify the received power output command; A start command sending module, used for the power controller to send a start command carrying start parameters to the corresponding power unit through a communication line based on the power output instruction; A ready response feedback module is used for the power unit to start the hardware based on the received start command, and after the start is completed, each power unit feeds back a ready response to the power controller; A start pulse sending module, used for sending a start pulse to a signal concurrent controller through an optical fiber after the power controller receives the ready response sent by the relevant power unit; The signal concurrent controller forwards the received start pulse to the corresponding power unit in real time through the optical fiber; The power synchronous output module is used for each power unit to synchronously perform power output based on the received start pulse.

7. A synchronous starting device for a battery operating condition simulation test system as claimed in claim 6, characterized in that: The power output instruction verification module is specifically used for: The power controller of the battery working condition simulation test system parses the received power output instruction to obtain the startup parameter, the power unit number, the signature value, the timestamp and the hash value, wherein the hash value is obtained by performing a hash calculation on the startup parameter, the power unit number, the signature value and the timestamp; After the startup parameters, power unit number, signature value and timestamp are checked for integrity through the hash value, the timeliness is checked through the timestamp, and then the signature value is verified through the preset public key to complete the verification of the power output instruction.

8. A synchronous starting device for a battery operating condition simulation test system as claimed in claim 6, characterized in that: The startup command sending module is specifically used for: Based on the startup parameters and power unit number carried by the power output instruction, the power controller sends a startup command carrying the startup parameters to the power unit with the corresponding power unit number through the communication line; the startup parameters include at least output voltage, output current and output duration.

9. A synchronous starting device for a battery operating condition simulation test system as claimed in claim 6, characterized in that: The ready response feedback module is specifically used for: The power unit starts the hardware based on the received start command, and after the start is completed, each power unit feeds back a ready response to the power controller in real time through the communication line.

10. A synchronous starting device for a battery operating condition simulation test system according to claim 6, characterized in that: The power synchronous output module is specifically used for: Each power unit receives the start pulse in real time through interruption, and after receiving the start pulse, each power unit synchronously performs power output based on the start parameter.

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