CN111125914B - Water-cooling charge-discharge linkage method and linkage system - Google Patents
Water-cooling charge-discharge linkage method and linkage system Download PDFInfo
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- CN111125914B CN111125914B CN201911360324.5A CN201911360324A CN111125914B CN 111125914 B CN111125914 B CN 111125914B CN 201911360324 A CN201911360324 A CN 201911360324A CN 111125914 B CN111125914 B CN 111125914B
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- 238000001816 cooling Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 93
- 238000004891 communication Methods 0.000 claims abstract description 68
- 238000007599 discharging Methods 0.000 claims abstract description 50
- 238000012360 testing method Methods 0.000 claims abstract description 23
- 238000012545 processing Methods 0.000 claims description 31
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 239000002826 coolant Substances 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 4
- 206010063385 Intellectualisation Diseases 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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Abstract
The invention relates to a water-cooling charge-discharge linkage method and a linkage system, wherein the system comprises a control host, a water-cooling machine and a charge-discharge cabinet; the method comprises the following steps: s1: acquiring a related communication signal file of the temperature, flow and pressure of water flow of the water cooler; acquiring related communication signal files of temperature, voltage and current of a battery pack; acquiring related communication signal files of output voltage and current of the charging and discharging cabinet; s2: integrating 3 analysis files to generate a whole vehicle CAN communication signal file, and S3: editing a program through the newly generated communication file; the temperature and the flow are integrated together to realize the linkage between the temperature and the flow, and the test of the thermal management performance correlation of the actual simulated battery pack is completed. The invention can reduce operators, and the test platform is not required to be monitored all the time to manually adjust the parameters of the cooling loop; the problem that the frequent adjustment of the parameters of the cooling loop in a short time can not be completed by manpower can be solved; related data can be recorded on one platform at the same time.
Description
Technical Field
The invention relates to the technical field of battery testing, in particular to a water-cooling charge-discharge linkage method and a linkage system.
Background
The water cooling machine is very important equipment in the test of an automobile power battery system, and consists of a water cooling control system, a flow control system and a pressure control system. Most of the current power battery system tests use a water cooler, and the functions of the water cooler are to raise and lower the temperature of a battery pack or to research the temperature rise and the electrical performance of an internal battery core of a battery, and some are to simulate the cooling strategy of a real vehicle water cooling system. With the continuous upgrading of the functions of new energy automobiles, customers put forward higher requirements on the automation and the intellectualization of battery test systems, and common water cooling machines cannot meet the requirements of customers in terms of intellectualization and automation.
Disclosure of Invention
The invention provides a water-cooling charge-discharge linkage method and a linkage system for overcoming the defect of low battery testing efficiency in the prior art.
The method comprises the following steps:
s1: analyzing the whole vehicle CAN communication protocol of the water cooler to obtain a related communication signal file 1 of the temperature, flow and pressure of water flow of the water cooler;
analyzing the whole CAN communication protocol of the battery pack to obtain a relevant communication signal file 2 of the temperature, voltage and current of the battery pack;
analyzing the whole vehicle CAN signal of the charging and discharging cabinet to obtain a related communication signal file 3 of the output voltage and current of the charging and discharging cabinet;
s2: integrating the 3 analysis files to generate a unified whole vehicle CAN communication signal file 4 containing signals of the water cooling machine, the battery pack and the charging and discharging cabinets;
s3: the control host compares the temperature of the battery pack with a preset target temperature according to the whole vehicle CAN communication signal file 4 to adjust the water flow of the water cooler and the discharge current of the charge-discharge cabinet; and the linkage between the temperature and the flow is realized, and the test of the correlation of the thermal management performance of the battery pack is actually simulated.
Preferably, S2 comprises: the communication signal file 1, the communication signal file 2 and the communication signal file 3 are sequentially opened, unique numbers are marked for each file signal according to the sequence, different voltages, currents and temperatures are named for distinguishing different signals, and the communication signal file 4 is uniformly generated after integration.
Preferably, in S3, the adjustment of the water flow of the water cooler and the discharge current of the charging and discharging cabinet is as follows:
the control host analyzes according to the whole vehicle CAN communication signal file 4 to obtain the temperature T of the battery pack 1 Setting the running temperature of the water cooling machine to be T 2 ＝T 0 Wherein T is 0 Target temperature for battery pack, and T 0 Greater than 0;
when the battery temperature T 1 <T 0 When the flow of the water cooler is regulated to L 0 ；
When the battery temperature T 1 ＞T 0 When the flow of the water cooler is regulated to L 0 ；
When the battery temperature T 1 ＝T 0 The flow of the water cooler is regulated to be L 1 And adjusts the charging and discharging current I of the charging and discharging cabinet 0 Charging and discharging the battery pack;
wherein L0 and L1 are real-time flow of the water cooler, and I0 is current of the charging and discharging cabinet.
Preferably L 0 ＝15L/min，L 1 ＝10L/min，I 0 ＝1CA。
The invention also provides a water-cooling charging and discharging linkage system, which is used for realizing the method and comprises a control host, a water-cooling machine and a charging and discharging cabinet;
the charging and discharging cabinet charges and discharges the battery pack to simulate the power of the real vehicle running on the road, so that the battery pack heats;
the water cooling machine cools the battery pack through a water cooling medium;
the control host is used for collecting relevant communication signals of the temperature, the flow and the pressure of water flow of the water cooling machine, relevant communication signals of the temperature, the voltage and the current of the battery pack, relevant communication signals of the output voltage and the current of the charging and discharging cabinet,
the control host integrates the three pieces of communication signal information, compares the temperature of the battery pack with a preset target temperature, and adjusts the water flow of the water cooler and the discharge current of the charge-discharge cabinet; and the water-cooling charge-discharge linkage is realized, and the test related to the thermal management performance of the battery pack is actually simulated.
Preferably, the control host includes: the device comprises a data acquisition module, a data processing module and a control module;
the data acquisition module acquires relevant communication signals of temperature, flow and pressure of water flow of a water cooling machine of the water cooling machine, relevant communication signals of temperature, voltage and current of a battery pack, and relevant communication signals of output voltage and current of a charging and discharging cabinet;
the data processing module performs data processing on the communication signal information of the three, and sends a processing result to the control module;
the control module sends out control signals according to the data processing result of the data processing module to control the water cooler and the charging and discharging cabinet.
Preferably, the control host also comprises a storage module and a report generation module;
the storage module stores the data acquired by the acquisition module and the data processing result of the data processing module;
the report generating module generates a report for the data acquired by the acquisition module and the data processing result of the data processing module.
The invention links the water cooler control system and the battery test system, integrates the charge and discharge system, the water cooling control system, the flow system and the pressure system, is centrally managed by a host control software, controls the flow and the temperature of the water cooler according to the temperature of a battery pack, the single voltage and the current signal by program editing, controls the charge and discharge strategy of the charge and discharge cabinet by the single cell voltage and the current signal, simulates various working conditions and thermal properties of an actual new energy vehicle in the running process, and lays a solid foundation for the thermal control and the thermal safety of the new energy vehicle in the road running.
Whether the development of new products, the upgrading and improvement of products and the production inspection of the automobile batteries are involved, the thermal performance and the thermal management of the battery pack are required to be analyzed and detected, the actual working condition of the battery pack is reproduced on the detection equipment, namely, the time is saved, the detection efficiency is greatly improved, the cost is reduced, enterprises are helped to accurately know the performance of the products, and therefore reliable detection data are provided for the design and the manufacture of the products.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that: the method can improve the efficiency of battery testing, reduces operators, does not need to monitor the testing platform all the time to manually adjust the parameters of the cooling circuit, and improves the intellectualization of the battery testing system; the problem that the frequent adjustment of the parameters of the cooling loop in a short time can not be completed by manpower can be solved; related data can be recorded on one platform at the same time.
Drawings
Fig. 1 is a flow chart of a water-cooling charge-discharge linkage method in example 1.
Fig. 2 is a schematic diagram of a water-cooling charge-discharge linkage system according to example 2.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions;
it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
Example 1
The embodiment provides a water-cooling charge-discharge linkage method, as shown in fig. 1, comprising the following steps:
s1: analyzing the whole vehicle CAN communication protocol of the water cooler through CANGUI software to obtain a related communication signal file 1 of the temperature, flow and pressure of water flow of the water cooler;
analyzing the whole CAN communication protocol of the battery pack through CANGUI software to obtain a relevant communication signal file 2 of the temperature, voltage and current of the battery pack;
analyzing the whole vehicle CAN signal of the charging and discharging cabinet through CANGUI software to obtain a related communication signal file 3 of the output voltage and current of the charging and discharging cabinet;
s2: integrating the 3 analysis files through CANGUI software to generate a unified whole vehicle CAN communication signal file 4 containing signals of the water cooling machine, the battery pack and the charging and discharging cabinet;
s3: the control host compares the temperature of the battery pack with a preset target temperature according to the whole vehicle CAN communication signal file 4 to adjust the water flow of the water cooler and the discharge current of the charge-discharge cabinet; and the linkage between the temperature and the flow is realized, and the test of the correlation of the thermal management performance of the battery pack is actually simulated.
S2 comprises the following steps: and sequentially opening the communication signal file 1, the communication signal file 2 and the communication signal file 3 by using CANGUI software, calibrating unique numbers for each file signal according to the sequence, naming different voltages, currents and temperatures, distinguishing different signals, and uniformly generating the communication signal file 4 after integration.
And S3, adjusting the water flow of the water cooler and the discharge current of the charging and discharging cabinet:
the control host analyzes according to the whole vehicle CAN communication signal file 4 to obtain the temperature T of the battery pack 1 Setting the running temperature of the water cooling machine to be T 2 ＝T 0 Wherein T is 0 Target temperature for battery pack, and T 0 Greater than 0;
when the battery temperature T 1 <T 0 When the flow of the water cooler is regulated to L 0 ；
When the battery temperature T 1 ＞T 0 When the flow of the water cooler is regulated to L 0 ；
When the battery temperature T 1 ＝T 0 The flow of the water cooler is regulated to be L 1 And adjusts the charging and discharging current I of the charging and discharging cabinet 0 Charging and discharging battery pack；
L 0 、L 1 Is the real-time flow of the water cooler, I 0 Is the current of the charging and discharging cabinet. L (L) 0 ＝15L/min，L 1 ＝10L/min，I 0 =1ca. The pressure of water flow of the water cooler is normal pressure, and the output voltage of the charging and discharging cabinet is converted according to the voltage of the battery pack, namely, the output voltage of the charging and discharging cabinet is equal to the voltage of the battery pack, and in the embodiment, the voltage of the battery pack is 380V, and the output voltage of the charging and discharging cabinet is 380V.
Example 2:
the embodiment provides a water-cooling charge-discharge linkage system, which can realize the method described in the embodiment 1, as shown in fig. 2, and comprises a control host, a water-cooling machine and a charge-discharge cabinet;
the charging and discharging cabinet charges and discharges the battery pack to simulate the power of the real vehicle running on the road, so that the battery pack heats;
the water cooling machine cools the battery pack through a water cooling medium;
the control host is used for collecting relevant communication signals of the temperature, the flow and the pressure of water flow of the water cooling machine, relevant communication signals of the temperature, the voltage and the current of the battery pack, relevant communication signals of the output voltage and the current of the charging and discharging cabinet,
the control host integrates the three pieces of communication signal information, compares the temperature of the battery pack with a preset target temperature, and adjusts the water flow of the water cooler and the discharge current of the charge-discharge cabinet; and the water-cooling charge-discharge linkage is realized, and the test related to the thermal management performance of the battery pack is actually simulated.
The control host integrates the communication information by using step S2 in the method described in embodiment 1
The control host compares the temperature of the battery pack with a preset target temperature by adopting the step S3 of the method in the embodiment 1 to adjust the water flow of the water cooler and the discharge current of the charge-discharge cabinet, and adjust the water flow of the water cooler and the charge-discharge cabinet.
The control host comprises: the device comprises a data acquisition module, a data processing module and a control module;
the data acquisition module acquires relevant communication signals of temperature, flow and pressure of water flow of a water cooling machine of the water cooling machine, relevant communication signals of temperature, voltage and current of a battery pack, and relevant communication signals of output voltage and current of a charging and discharging cabinet;
the data processing module performs data processing on the communication signal information of the three, wherein the data processing comprises data integration, temperature data comparison and the like, and sends a processing result to the control module;
the control module sends out control signals according to the data processing result of the data processing module to control the water cooler and the charging and discharging cabinet, and the control principle is controlled by adopting the principle described in the step S3 in the embodiment 1.
The control host also comprises a storage module and a report generation module;
the storage module stores the data acquired by the acquisition module and the data processing result of the data processing module;
the report generating module generates a report for the data acquired by the acquisition module and the data processing result of the data processing module.
The present embodiment may functionally divide the linkage system into: the system comprises a simulated power test system, a cooling loop system, a linkage control system and a data acquisition system;
simulation power test system: the battery pack is charged and discharged by the charging and discharging cabinet, and the power (high-speed running, high-speed climbing, NEDC and the like) of the real vehicle running on the road is simulated to heat the battery pack.
Cooling circuit system: the temperature, flow and corresponding pressure of the cooling medium of the water cooler are set through the control panel of the water cooler.
And the linkage control system comprises: and through CAN communication of the whole vehicle, battery pack information and a simulated power battery test system are integrated, and signals of the battery pack information, the simulated power battery test system and the simulated power battery test system are unified in one system. The battery pack heats through the simulation power test system, and the linkage control system adjusts the cooling loop system to correspondingly adjust according to signal information fed back by the battery pack so as to adapt to the current heating power of the battery pack.
And a data acquisition system: the control host collects, displays a graph, generates and stores the data of all signals; the measurement accuracy of the data acquisition system is as follows: temperature + -2 ℃, voltage FS0.001%, current FS0.001%.
The terms describing the positional relationship in the drawings are merely illustrative, and are not to be construed as limiting the present patent;
it is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (6)
1. The water-cooling charge-discharge linkage method is characterized by comprising the following steps of:
s1: analyzing the whole vehicle CAN communication protocol of the water cooler to obtain a related communication signal file 1 of the temperature, flow and pressure of water flow of the water cooler;
analyzing the whole CAN communication protocol of the battery pack to obtain a relevant communication signal file 2 of the temperature, voltage and current of the battery pack;
analyzing the whole vehicle CAN signal of the charging and discharging cabinet to obtain a related communication signal file 3 of the output voltage and current of the charging and discharging cabinet;
s2: integrating the 3 analysis files to generate a unified whole vehicle CAN communication signal file 4 containing signals of the water cooling machine, the battery pack and the charging and discharging cabinets;
s3: the control host compares the temperature of the battery pack with a preset target temperature according to the whole vehicle CAN communication signal file 4 to adjust the water flow of the water cooler and the discharge current of the charge-discharge cabinet; the linkage between the temperature and the flow is realized, and the test related to the thermal management performance of the battery pack is actually simulated;
and S3, adjusting the water flow of the water cooler and the discharge current of the charging and discharging cabinet:
the control host analyzes according to the whole vehicle CAN communication signal file 4 to obtain the temperature T of the battery pack 1 Setting the running temperature of the water cooling machine to be T 2 ＝T 0 Wherein T is 0 Target temperature for battery pack, and T 0 Greater than 0;
when the battery temperature T 1 <T 0 When the flow of the water cooler is regulated to L 0 ；
When the battery temperature T 1 ＝T 0 The flow of the water cooler is regulated to be L 1 And adjusts the charging and discharging current I of the charging and discharging cabinet 0 Charging and discharging the battery pack;
wherein L is 0 、L 1 Is the real-time flow of the water cooler, I 0 Is the current of the charging and discharging cabinet.
2. The water-cooling charge-discharge linkage method according to claim 1, wherein S2 comprises: the communication signal file 1, the communication signal file 2 and the communication signal file 3 are sequentially opened, unique numbers are marked for each file signal according to the sequence, different voltages, currents and temperatures are named for distinguishing different signals, and the communication signal file 4 is uniformly generated after integration.
3. The water-cooling charge-discharge linkage method according to claim 2, wherein L 0 ＝15L/min，L 1 ＝10L/min，I 0 ＝1CA。
4. The water-cooling charging and discharging linkage system is characterized by comprising a control host, a water-cooling machine and a charging and discharging cabinet;
the charging and discharging cabinet charges and discharges the battery pack to simulate the power of the real vehicle running on the road, so that the battery pack heats;
the water cooling machine cools the battery pack through a water cooling medium;
the control host is used for collecting relevant communication signals of the temperature, the flow and the pressure of water flow of the water cooling machine, relevant communication signals of the temperature, the voltage and the current of the battery pack, relevant communication signals of the output voltage and the current of the charging and discharging cabinet,
the control host integrates the three pieces of communication signal information, compares the temperature of the battery pack with a preset target temperature, and adjusts the water flow of the water cooler and the discharge current of the charge-discharge cabinet; realizing water-cooling charge-discharge linkage, and completing the test related to the thermal management performance of the actual simulated battery pack;
the water flow of the water cooler and the discharge current of the charging and discharging cabinet are adjusted as follows:
the control host analyzes according to the whole vehicle CAN communication signal file 4 to obtain the temperature T of the battery pack 1 Setting the running temperature of the water cooling machine to be T 2 ＝T 0 Wherein T is 0 Target temperature for battery pack, and T 0 Greater than 0;
when the battery temperature T 1 <T 0 When the flow of the water cooler is regulated to L 0 ；
When the battery temperature T 1 ＝T 0 The flow of the water cooler is regulated to be L 1 And adjusts the charging and discharging current I of the charging and discharging cabinet 0 Charging and discharging the battery pack;
wherein L is 0 、L 1 Is the real-time flow of the water cooler, I 0 Is the current of the charging and discharging cabinet.
5. The water-cooled charge-discharge linkage system according to claim 4, wherein the control host comprises: the device comprises a data acquisition module, a data processing module and a control module;
the data acquisition module acquires relevant communication signals of temperature, flow and pressure of water flow of a water cooling machine of the water cooling machine, relevant communication signals of temperature, voltage and current of a battery pack, and relevant communication signals of output voltage and current of a charging and discharging cabinet;
the data processing module performs data processing on the communication signal information of the three, and sends a processing result to the control module;
the control module sends out control signals according to the data processing result of the data processing module to control the water cooler and the charging and discharging cabinet.
6. The water-cooled charge-discharge linkage system of claim 5, wherein the control host further comprises a storage module and a report generation module;
the storage module stores the data acquired by the acquisition module and the data processing result of the data processing module;
the report generating module generates a report for the data acquired by the acquisition module and the data processing result of the data processing module.
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