Monitoring device and method for the liquid cooling system branch of CTP battery

Abstract

This application discloses a monitoring device and method for a branch of a CTP battery liquid cooling system. The device includes an integrated frame, multiple integrated liquid cooling crossbeams, multiple shunt sealing bolts, and multiple shunt monitoring components. Each shunt monitoring component includes an open-hole shunt sealing bolt and a monitoring device. Each integrated liquid cooling crossbeam corresponds to one branch of the CTP battery liquid cooling system and is equipped with one shunt sealing bolt and one shunt monitoring component. In the unmonitored state, each shunt sealing bolt is screwed onto the corresponding integrated liquid cooling crossbeam. In the monitoring state, the shunt monitoring component replaces the removed shunt sealing bolt and is screwed onto the corresponding integrated liquid cooling crossbeam, collecting various data on the coolant in the current branch based on the monitoring device. This device can accurately monitor the data of each liquid cooling branch, improving the accuracy and convenience of liquid cooling branch monitoring.

Description

Technical Field

[0001] This application relates to the field of CTP battery data monitoring technology, and in particular to a monitoring device and method for a CTP battery liquid cooling system branch. Background Technology

[0002] Currently, cell-to-pack (CTP) batteries, with their advantages of high space utilization, small size, and light weight, are widely used in various fields such as electric vehicles. To reduce battery temperature and improve battery safety during operation, CTP batteries require a liquid cooling system. Furthermore, to ensure the normal operation of this liquid cooling system, its operating data needs to be monitored.

[0003] In related technologies, monitoring is typically limited to the entire liquid cooling system. However, in practical applications, a liquid cooling system may contain multiple branches. Current monitoring methods cannot collect and monitor data from any single branch of the CTP battery liquid cooling system, making it impossible to adjust the individual branches and thus affecting the overall performance of the liquid cooling system. Summary of the Invention

[0004] The purpose of this application is to at least partially solve one of the aforementioned technical problems.

[0005] Therefore, the first objective of this application is to provide a monitoring device for the liquid cooling system branches of a CTP battery. This device can accurately monitor the data of each liquid cooling branch and adjust the branch shunt orifice diameter based on the measured data, thereby improving the accuracy and convenience of liquid cooling branch monitoring and solving the problem of not being able to monitor and adjust the data of any single CTP battery liquid cooling system branch.

[0006] The second objective of this application is to propose a monitoring method for the branch circuit of a CTP battery liquid cooling system.

[0007] The third objective of this application is to provide a non-transitory computer-readable storage medium.

[0008] To achieve the above objectives, a first aspect of this application provides a monitoring device for a branch of a CTP battery liquid cooling system. The device includes: an integrated frame, multiple integrated liquid cooling crossbeams, multiple shunt sealing bolts, and multiple shunt monitoring components. Each shunt monitoring component includes an open-type shunt sealing bolt and a monitoring device.

[0009] Each of the integrated liquid-cooled crossbeams corresponds to a branch of the CTP battery liquid cooling system. Each of the integrated liquid-cooled crossbeams is equipped with a shunt sealing fixing bolt and a shunt monitoring component. The coolant circulates in the channel formed by the integrated frame, the integrated liquid-cooled crossbeams and the shunt sealing fixing bolts.

[0010] In the absence of monitoring, each of the diversion seal fixing bolts is screwed onto the corresponding integrated liquid-cooled crossbeam to fix the integrated frame;

[0011] In the monitoring state, the diversion monitoring component is used to replace the removed diversion sealing fixing bolt and screw it onto the corresponding integrated liquid-cooled crossbeam, and collects various data of the coolant in the current branch based on the monitoring device.

[0012] In addition, the monitoring device for the CTP battery liquid cooling system branch of this application embodiment also has the following additional technical features:

[0013] Optionally, in some embodiments, the open-hole type diversion sealing fixing bolt includes: a bolt head, a first step, a second step, a second sealing ring, a third sealing ring, a fourth sealing ring, and a fifth sealing ring; wherein the second sealing ring is engaged in the groove at the rear section of the first step, the third sealing ring is located at the connection between the first step and the second step, the fourth sealing ring is located at the connection between the second step and the bolt head, and the fifth sealing ring is located on the vertical end face of the bolt head.

[0014] Optionally, in some embodiments, the open-hole type diversion sealing bolt further includes: a first stepped thread, a threaded hole, a first diversion channel, and a second diversion channel; wherein, the first stepped thread is located at the front section of the first step, and the threaded hole is located at the center inside the bolt head; the second diversion channel is disposed inside the first step and the second step, and the first diversion channel is disposed on the second step; the first diversion channel and the second diversion channel are interconnected, and the second diversion channel is also interconnected with the threaded hole.

[0015] Optionally, in some embodiments, the monitoring device includes: a communication harness, a monitoring processor, a threaded post, a sampling extension harness, and a sampling sensor; wherein, the threaded post is used to mate with the threaded hole to fix the monitoring device on the open-hole type diversion seal fixing bolt; the length of the sampling extension harness is adjustable, and the sampling extension harness is used to deliver the sampling sensor to the corresponding sampling position; the sampling sensor is located at the front end of the sampling extension harness, and the sampling sensor is used to collect various data of the coolant in the current branch; the monitoring processor is used to receive and process the data collected by the sampling sensor, and send the pre-processed data to the communication harness, and the communication harness is used to transmit the received data to an external device.

[0016] Optionally, in some embodiments, the system further includes: a data collector connected to the communication harness, the data collector being used to send the pre-processed data to the computer processor; the computer processor being used to analyze and process the pre-processed data.

[0017] To achieve the above objectives, a second aspect of the present invention provides a monitoring method for a CTP battery liquid cooling system branch, applied to the monitoring device for the CTP battery liquid cooling system branch described in the first aspect. The method includes:

[0018] Identify at least one target branch to be monitored in the CTP battery liquid cooling system, remove the shunt sealing fixing bolt of the target branch, and identify a shunt monitoring component that matches the removed shunt sealing fixing bolt.

[0019] The current shunt monitoring component is installed on the target branch, and various data of the target branch are collected by the current shunt monitoring component when the CTP battery is running under the current operating conditions.

[0020] Each data point of the target branch is compared with the corresponding preset theoretical data. The degree of deviation of the target branch is determined based on the comparison results, and the model of the replaced open-hole type diversion seal fixing bolt is determined based on the degree of deviation.

[0021] Replace the original perforated shunt sealing bolt in the shunt monitoring component according to the determined model, and re-collect various data of the target branch when the CTP battery is running under the current operating conditions using the replaced shunt monitoring component.

[0022] In addition, the monitoring method for the CTP battery liquid cooling system branch of this application embodiment also has the following additional technical features:

[0023] Optionally, in some embodiments, determining the shunt monitoring group that matches the removed shunt sealing bolt includes: acquiring an open-hole shunt sealing bolt of the same model as the shunt sealing bolt, and determining whether the cross-sectional area of ​​the first shunt channel of the shunt sealing bolt and the open-hole shunt sealing bolt are the same; if the cross-sectional area of ​​the first shunt channel is the same, calculating the difference between the cross-sectional area of ​​the second shunt channel of the shunt sealing bolt and the cross-sectional area of ​​the second shunt channel of the open-hole shunt sealing bolt, and determining whether the difference is equal to the cross-sectional area of ​​the sampling extension harness of the shunt monitoring component; and selecting the shunt monitoring component whose difference is equal to the cross-sectional area of ​​the sampling extension harness as the matched shunt monitoring component.

[0024] Optionally, in some embodiments, determining the deviation degree of the target branch based on the comparison results includes: determining the degradation level of the target branch based on the difference between each type of collected data of the target branch and the corresponding preset theoretical data; determining the model of the replaced open-hole type diversion seal fixing bolt based on the deviation degree includes: determining the enlarged model of the replaced open-hole type diversion seal fixing bolt based on the degradation level, wherein the enlarged model of the replaced open-hole type diversion seal fixing bolt is positively correlated with the degradation level.

[0025] Optionally, in some embodiments, determining the deviation degree of the target branch based on the comparison results further includes: determining the level of the target branch's performance above theoretical requirements based on the difference between each type of collected data of the target branch and the corresponding preset theoretical data; determining the model of the replaced open-hole type diversion seal fixing bolt based on the deviation degree includes: determining the reduced model of the replaced open-hole type diversion seal fixing bolt based on the level of performance above theoretical requirements, wherein the reduced model of the replaced open-hole type diversion seal fixing bolt is positively correlated with the level of performance above theoretical requirements.

[0026] To achieve the above objectives, a third aspect of the present invention provides a non-transitory computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements a monitoring method for a CTP battery liquid cooling system branch as described in any of the second aspect embodiments above.

[0027] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects:

[0028] This application provides a dedicated shunt monitoring component for each branch in the CTP battery liquid cooling system. This component enables monitoring and data acquisition for each liquid cooling branch, allowing for more granular monitoring of the entire liquid cooling system. Furthermore, based on measured data from the branches, the application adjusts the shunt orifice diameter of the battery pack liquid cooling system branches by increasing or decreasing the size of the perforated shunt sealing bolts. This allows for adjustments to the coolant flow in each branch based on its actual operating conditions, improving the thermal management performance and operating efficiency of the battery pack liquid cooling system. Moreover, this application requires only one monitoring device, which can be applied to monitor battery liquid cooling branches in different operating scenarios and can be used to monitor different vehicles, increasing the utilization rate of the monitoring device and reducing the overall cost of monitoring battery liquid cooling branches. Therefore, this application improves the accuracy, convenience, and applicability of liquid cooling branch monitoring, contributing to the stable and efficient operation of the CTP battery liquid cooling system.

[0029] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0030] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0031] Figure 1 This is a schematic diagram of the structure of a monitoring device for a CTP battery liquid cooling system branch according to an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the structure of a monitoring device for another CTP battery liquid cooling system branch proposed in an embodiment of this application;

[0033] Figure 3 This is a schematic diagram of the structure of a diversion monitoring component proposed in an embodiment of this application;

[0034] Figure 4 This is a schematic diagram of the structure of a specific diversion monitoring component proposed in an embodiment of this application;

[0035] Figure 5 This is a cross-sectional schematic diagram of an open-hole type diversion sealing fixing bolt proposed in an embodiment of this application;

[0036] Figure 6 This is a schematic diagram of a data acquisition and processing system proposed in an embodiment of this application;

[0037] Figure 7 This is a flowchart illustrating a monitoring method for a CTP battery liquid cooling system branch according to an embodiment of this application;

[0038] Figure 8 This is a flowchart illustrating a specific monitoring method for a CTP battery liquid cooling system branch proposed in an embodiment of this application. Detailed Implementation

[0039] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0040] The monitoring device and method for the CTP battery liquid cooling system branch of this application are described below with reference to the accompanying drawings.

[0041] Figure 1 This is a schematic diagram of the structure of a monitoring device for a CTP battery liquid cooling system branch according to an embodiment of this application. Figure 2 This is a schematic diagram of the structure of a monitoring device for another CTP battery liquid cooling system branch proposed in an embodiment of this application, as shown below. Figure 1 and Figure 2 As shown, the device includes: an integrated frame 10, multiple integrated liquid-cooled crossbeams 20, multiple diversion sealing fixing bolts 30, and multiple diversion monitoring components 40. The diversion monitoring components 40 include open-hole diversion sealing fixing bolts 41 and monitoring devices 42.

[0042] Each integrated liquid-cooled crossbeam 20 corresponds to one branch of the CTP battery liquid cooling system, and each integrated liquid-cooled crossbeam 20 is equipped with a shunt sealing fixing bolt 30 and a shunt monitoring component 40. Figure 1 and Figure 2 Only one shunt monitoring component 40 is shown as an example. The coolant circulates in a channel consisting of an integrated frame 10, an integrated liquid-cooled crossbeam 20, and a shunt sealing bolt (which may be a shunt sealing bolt 30 or an open-hole shunt sealing bolt 41, depending on whether it is under monitoring).

[0043] Specifically, when the liquid cooling system branch is not being monitored, each shunt seal fixing bolt 30 is screwed onto the corresponding integrated liquid cooling crossbeam 20 to secure the integrated frame 10. When the liquid cooling system branch is being monitored, the shunt monitoring component 40 replaces the removed shunt seal fixing bolt 30 and is screwed onto the corresponding integrated liquid cooling crossbeam 20, and collects various data on the coolant in the current branch based on the monitoring device 41.

[0044] In practical implementation, as one possible approach, the diversion sealing bolt 30, equipped with threads and a sealing structure, is screwed into the corresponding hole of the integrated liquid-cooled crossbeam 20 to secure the integrated frame 10. In the absence of monitoring, i.e., before the diversion sealing bolt 30 is removed, its functions include securing the integrated frame 10, diverting current to its corresponding branch, and sealing the circuit. When monitoring of a particular branch is required, such as... Figure 2 As shown, the branch circuit's shunt sealing fixing bolt 30 needs to be removed first, then... Figure 1 As shown, the corresponding shunt monitoring component 40 is screwed into the corresponding hole of the integrated liquid-cooled crossbeam 20.

[0045] It should be noted that each integrated liquid-cooled crossbeam 10, regardless of whether it is in the monitoring loop, is a separate branch in the CTP battery liquid cooling system. The number of shunt monitoring components 40 can be set according to the actual monitoring needs of the liquid cooling system branches, depending on the number of branches that need to be monitored.

[0046] like Figure 3As shown, the diversion monitoring component 40 includes an open-hole diversion sealing bolt 41 and a monitoring device 42. The open-hole diversion sealing bolt 41 also has threads and a sealing structure, and its fixing method is the same as that of the diversion sealing bolt 30. After the diversion monitoring component 40 is screwed on, in addition to the diversion sealing bolt 30 fixing the integrated frame 10 and diverting and sealing the branch, the diversion monitoring component 40 also monitors the branch it is located in through the monitoring device 42 and collects various data on the branch.

[0047] That is, the open-hole type diversion sealing fixing bolt 41 of this application embodiment plays two roles. On the one hand, the monitoring device 42 is introduced and sent to the corresponding monitoring position through the opening of the head of the open-hole type diversion sealing fixing bolt 41. On the other hand, the diversion of the liquid cooling system branch is realized based on the effective opening area.

[0048] In practical applications, when the coolant circulates in the CTP battery liquid cooling system, the coolant first flows into the integrated frame 10 from the inlet, then flows into the integrated liquid cooling beam 20 through the first and second diversion channels in the diversion sealing fixing bolt, then flows into the integrated frame 10 on the other side through the first and second diversion channels in the diversion sealing fixing bolt on the other side, and finally flows out from the outlet.

[0049] The diversion monitoring component 40 of this application will now be described in detail. In one embodiment of this application, such as Figure 4 As shown, the open-hole type diversion sealing bolt 41 includes: a bolt head 1, a first step 2, a second step 3, a second sealing ring 4, a third sealing ring 5, a fourth sealing ring 6, and a fifth sealing ring 7. The second sealing ring 4 is engaged in a groove at the rear section of the first step 2; the third sealing ring 5 is located at the connection between the first step 2 and the second step 3; the fourth sealing ring 6 is located at the connection between the second step 3 and the bolt head 1; and the fifth sealing ring 7 is located on the vertical end face of the bolt head 1.

[0050] Specifically, in this embodiment, the second sealing ring 4 is positioned at the unthreaded section of the first step 2, where a groove can be provided to hold the second sealing ring 4. The third sealing ring 5 is located at the connection between the first step 2 and the second step 3, and can be adhered to the vertical end face on the left side of the second step 3. The fourth sealing ring 5 is located at the connection between the second step 3 and the bolt head 1, and can be adhered to the vertical end face on the left side of the bolt head 1. The fifth sealing ring 7 is located on the end face of the bolt head 1 and can be adhered to the vertical end face of the bolt head 1.

[0051] Continue to refer to Figure 4The example shown, the open-hole type diversion sealing bolt 41, further includes: a first stepped thread 8, a threaded hole 9, a first diversion channel 11, and a second diversion channel 12. The first stepped thread 8 is located at the front section of the first step 2, and the threaded hole 9 is located at the center inside the bolt head 1. The second diversion channel 12 is disposed inside the first step 2 and the second step 3, and the first diversion channel 11 is disposed on the second step 3. The first diversion channel 11 and the second diversion channel 12 are interconnected, and the second diversion channel 12 is also connected to the threaded hole 9.

[0052] Specifically, there is a thread at the front end of the first step, and the first step thread 8 is used to connect and fix this bolt. For example... Figure 5 As shown, both the first step 2 and the second step 3 have partial second diversion channels 12 inside. The first diversion channel 11 is located on the second step 3 and penetrates through the second step 3. The first diversion channel 11 and the second diversion channel 12 have an intersection area to communicate with each other. Based on this, coolant can flow from the flow channel inside the integrated frame 10 into the second diversion channel 12, then flow through the first diversion channel 11 and out to the integrated liquid-cooled crossbeam 20, and vice versa. The bolt head 1 has a threaded hole 9 at its center, which is also connected to the second diversion channel 12.

[0053] In one embodiment of this application, such as Figure 4 As shown, the monitoring device 42 includes: a communication harness 13, a monitoring processor 14, a threaded post 15, a sampling extension harness 16, and a sampling sensor 17. The threaded post 15 is used to fix the monitoring device 42 to the open-hole type diversion seal fixing bolt 41 by engaging with the threaded hole 9. The length of the sampling extension harness 16 is adjustable, and it is used to deliver the sampling sensor 17 to the corresponding sampling position. The sampling sensor 17 is located at the front end of the sampling extension harness 16 and is used to collect various data on the coolant in the current branch. The monitoring processor 14 receives and processes the data collected by the sampling sensor 17 and sends the pre-processed data to the communication harness 13. The communication harness 13 transmits the received data to an external device.

[0054] Specifically, in this embodiment, after the threaded post 15 and the threaded hole 9 are engaged, the monitoring device 42 is fixed on the shunt sealing fixing bolt opening type 41. The fifth sealing ring 7 is used for sealing between the monitoring device 42 and the opening type shunt sealing fixing bolt 41. The sampling sensor 17 is located at the end of the sampling extension harness 16 and can collect various measurement information such as the water temperature, flow rate, and flow rate of the coolant in the current branch. The length of the sampling extension harness 16 can be adjusted as needed to send the sampling sensor 17 to the corresponding monitoring position, which can be within or beyond the second shunt channel to collect data at different locations. The monitoring processor 14 is used to receive, initially process, and send the data collected by the sampling sensor 17. The communication harness 13 is used to transmit data and realize the communication interaction between this monitoring device and external devices.

[0055] Based on the above embodiments, this application also proposes a data acquisition and processing system to collect and process the data acquired by the monitoring device. In one embodiment of this application, the data acquisition and processing system includes the above-mentioned diversion monitoring component, a data acquisition unit, and a computer processor. The data acquisition unit is connected to a communication harness and is used to send the pre-processed data to the computer processor; the computer processor is used to analyze and perform calculations on the pre-processed data.

[0056] Specifically, in this embodiment, as Figure 6 As shown, when monitoring n branches is required, n shunt monitoring components are set up accordingly. Each shunt monitoring component is screwed onto the corresponding integrated liquid-cooled crossbeam as described in the above embodiment. After the shunt monitoring components are installed, the communication harness in the shunt monitoring components is connected to the corresponding channel of the data acquisition unit. The output of the data acquisition unit also transmits the preliminary processed data corresponding to all branches to the computer processor through the communication harness. The computer processor performs detailed analysis on the preliminary processed data of each branch.

[0057] For example, preliminary processing of the data collected by the sampling sensor may involve removing outliers, filling in missing data, and performing data format conversions. The computer processor then performs detailed analysis of the preliminary processed data from each branch, which may involve comparing and analyzing the collected branch data and determining adjustment strategies for each branch based on the analysis results.

[0058] In summary, the monitoring device for the CTP battery liquid cooling system branches in this application embodiment provides a separate shunt monitoring component for each branch in the CTP battery liquid cooling system. This shunt monitoring component enables monitoring and data acquisition for each liquid cooling branch, thereby achieving targeted monitoring of the liquid cooling system branches. This refines the granularity of liquid cooling system monitoring and improves the thermal management performance of the battery pack liquid cooling system. Furthermore, only one monitoring device is needed, which can be applied to monitor battery liquid cooling branches in different operating scenarios and can be used to monitor different vehicles, improving the utilization rate of the monitoring device and reducing the overall cost of monitoring battery liquid cooling branches. Therefore, this device improves the accuracy, convenience, and applicability of liquid cooling branch monitoring, which is beneficial for ensuring the stable and efficient operation of the CTP battery liquid cooling system.

[0059] To more clearly illustrate the specific implementation process of monitoring and adjusting the CTP battery liquid cooling system branch using the monitoring device, a monitoring method for the CTP battery liquid cooling system branch proposed in this application embodiment will be described in detail below. This method is applied to the monitoring device for the CTP battery liquid cooling system branch in the above embodiment; that is, it uses the monitoring device in the above embodiment to monitor the CTP battery and performs related control on the monitoring device to realize the monitoring method of this embodiment. The monitoring device involved in this method includes various components as described in the above embodiment, which will not be repeated here.

[0060] Figure 7 This is a flowchart of a monitoring method for a CTP battery liquid cooling system branch proposed in an embodiment of this application, as shown below. Figure 7 As shown, the method includes the following steps:

[0061] Step S101: Identify at least one target branch to be monitored in the CTP battery liquid cooling system, remove the shunt sealing fixing bolts of the target branch, and identify the shunt monitoring component that matches the removed shunt sealing fixing bolts.

[0062] Specifically, this application can monitor one or more branches in a battery liquid cooling system according to actual monitoring needs. The target branch to be monitored can be a branch that is prone to abnormalities or a typical branch that is important in the liquid cooling system.

[0063] For example, the target branches to be monitored may include: branches that may experience anomalies, identified during the branch design and simulation of the CTP battery liquid cooling system; typical branches that undertake the main cooling cycle tasks in the liquid cooling system; and branches that have experienced anomalies more frequently, as determined based on historical operating experience.

[0064] Furthermore, after identifying each target branch to be monitored, the installed shunt sealing fixing bolts on each target branch are removed. Then, for each target branch, a shunt monitoring component that matches the removed shunt sealing fixing bolts on each branch is determined.

[0065] It should be noted that, as described in the above embodiments, this application achieves the diversion of the liquid cooling system branch based on the effective opening area of ​​the perforated diversion sealing fixing bolt 41. The effective opening area needs to be consistent with the diversion hole area of ​​the replaced diversion sealing fixing bolt to avoid the replacement operation changing the actual liquid flow. This application can determine the diversion monitoring component that matches the removed diversion sealing fixing bolt based on the effective opening area.

[0066] In one embodiment of this application, determining a shunt monitoring group that matches the removed shunt sealing bolt includes: first, obtaining an open-hole shunt sealing bolt of the same model as the shunt sealing bolt, and determining whether the cross-sectional areas of the first shunt channels of the shunt sealing bolt and the open-hole shunt sealing bolt are the same; if the cross-sectional areas of the first shunt channels are the same, calculating the difference between the cross-sectional area of ​​the second shunt channel of the shunt sealing bolt and the cross-sectional area of ​​the second shunt channel of the open-hole shunt sealing bolt, and determining whether the difference is equal to the cross-sectional area of ​​the sampling extension harness of the shunt monitoring component; and selecting the shunt monitoring component whose difference is equal to the cross-sectional area of ​​the sampling extension harness as the matching shunt monitoring component.

[0067] Specifically, in this embodiment, taking any target branch as an example, the model of the dismantled diversion sealing bolt on the target branch is first determined. A matching open-hole type diversion sealing bolt of the same model is then selected for subsequent matching, minimizing the matching process and improving matching efficiency. Next, it is determined whether the cross-sectional area of ​​the first diversion channel of the dismantled diversion sealing bolt is the same as the cross-sectional area of ​​the first diversion channel of the selected open-hole type diversion sealing bolt. If they are the same, a matching judgment of the effective opening area is then performed.

[0068] Wherein, the effective opening area is equal to the area of ​​the circular hole of the opening-type diversion sealing fixing bolt minus the cross-sectional area of ​​the sampling extension line, as described in the above embodiments. Figure 5 It can be seen that the opening area of ​​the perforated type diversion sealing fixing bolt is the cross-sectional area of ​​the second diversion channel. Therefore, if the effective opening area of ​​the perforated type diversion sealing fixing bolt is the same as the cross-sectional area of ​​the second diversion channel of the removed diversion sealing fixing bolt, it can be determined that the two are matched.

[0069] That is, the effective opening area can be matched and determined using the following formula:

[0070] Cross-sectional area of ​​the second diversion channel of the perforated diversion seal fixing bolt - Cross-sectional area of ​​the second diversion channel of the removed diversion seal fixing bolt = M

[0071] Where M is the cross-sectional area of ​​the sampling extension line of the orifice-type shunt sealing fixing bolt. If the above formula is satisfied, it indicates that the effective orifice area of ​​the shunt monitoring component to be selected is matched.

[0072] Furthermore, the shunt monitoring components that meet the above two criteria are selected as the shunt monitoring components that match the removed shunt sealing bolts. For each target branch, a matching shunt monitoring component can be selected in the above manner.

[0073] Step S102: Install a shunt monitoring component on the target branch and collect various data of the target branch when the CTP battery is running under the current operating conditions through the shunt monitoring component.

[0074] Specifically, first install the matching diversion monitoring components determined in the previous step on each target branch, and then proceed according to... Figure 6 As shown, each shunt monitoring component is connected to the data acquisition and processing system. Then, various data in the target branch are collected through each shunt monitoring component when the CTP battery is running under the current operating conditions.

[0075] As one possible implementation, when installing the shunt monitoring component, first install the matching open-hole shunt sealing bolts. Then, install the monitoring device on the open-hole shunt sealing bolts, including: inserting the sampling extension harness and the sampling sensor mounted thereon into the threaded hole of the open-hole shunt sealing bolt and into the second shunt channel, and then screwing the threaded post into the threaded hole.

[0076] Furthermore, when connecting the data acquisition and processing system, first connect all the communication cables to the corresponding channels of the data acquisition unit, and then connect the data acquisition unit to the computer processor.

[0077] Furthermore, when collecting various data from the target branch using the installed shunt monitoring components, the current operating condition of the CTP battery must first be determined. For example, the required operating condition could be any one of the following: high-temperature fast charging, normal-temperature fast charging, low-temperature fast charging, low-temperature insulation, normal-temperature discharging, high-temperature discharging, or low-temperature discharging, depending on the actual operating scenario of the CTP battery. While the CTP battery and its surrounding equipment are running under the current operating condition, the computer processor records the branch data collected by the shunt monitoring components on each target branch.

[0078] For example, the CTP battery is charged and discharged according to the operating conditions required by the equipment in which it is located. When monitoring the liquid cooling system branch of the CTP battery in an electric vehicle, the electric vehicle is driven or charged directly according to the operating conditions. For a single battery pack, charging and discharging can be performed on a test bench. Then, all data collected by each shunt monitoring component is recorded when the CTP battery is running according to the operating conditions.

[0079] Therefore, this step enables individual monitoring of each branch in the CTP battery liquid cooling system.

[0080] Step S103: Compare each type of data of the target branch with the corresponding preset theoretical data, determine the degree of deviation of the target branch based on the comparison results, and determine the model of the replaced open-type diversion seal fixing bolt based on the degree of deviation.

[0081] Specifically, this step involves individually monitoring each target branch and adjusting the orifice diameter of each target branch based on the actual monitoring data. During the adjustment process, the collected monitoring data for each target branch is first compared with the expected theoretical data for that target branch under the current operating conditions. The degree of deviation for each target branch is determined based on the comparison results, including whether the data is lower or higher than the theoretical data. Finally, different types of open-hole type diversion sealing bolts are used for replacement based on the degree of deviation, thereby achieving corresponding orifice diameter adjustment according to the degree of deviation, improving the accuracy and applicability of orifice diameter adjustment for each branch.

[0082] In one embodiment of this application, determining the deviation degree of the target branch based on the comparison results includes: determining the deterioration level of the target branch based on the difference between each type of collected data of the target branch and the corresponding preset theoretical data; determining the model of the replaced open-hole type diversion seal fixing bolt based on the deviation degree includes: determining the enlarged model of the replaced open-hole type diversion seal fixing bolt based on the deterioration level, wherein the enlarged model of the replaced open-hole type diversion seal fixing bolt is positively correlated with the deterioration level.

[0083] Specifically, in this embodiment, each type of data collected from the target branch is compared with the corresponding preset theoretical data under the current operating conditions to calculate the difference between the actual monitored data and the theoretical data. The data collected from each target branch may include the temperature, flow rate, and flow rate of the coolant within that branch. When the actual monitored data is less than the theoretical data, the degradation level of the target branch is determined based on the magnitude of the difference between each type of actual monitored data and the theoretical data. The degradation levels include: mild degradation, moderate degradation, and severe degradation. For example, if the absolute value of the difference is greater than a certain threshold, the degradation level of the target branch is determined to be severe degradation; conversely, if the absolute value of the difference is less than a certain threshold, the degradation level of the target branch is determined to be mild degradation.

[0084] Furthermore, the size of the replacement orifice-type shunt seal fixing bolt is determined based on the degradation level. Specifically, the higher the degradation level of the target branch, the larger the size of the replacement orifice-type shunt seal fixing bolt needs to be. To more clearly illustrate the adjustment method of the shunt orifice diameter of the liquid-cooled branch in this embodiment, the following is in conjunction with... Figure 8 The specific monitoring and adjustment process is explained below.

[0085] like Figure 8 As shown, the size increase of the replaced open-hole type diversion seal fixing bolt compared to the original is positively correlated with the deterioration level; that is, the higher the deterioration level, the larger the size increase of the replaced open-hole type diversion seal fixing bolt. For example, such as... Figure 8 As shown, compared to the original installed open-hole type diversion seal fixing bolt, when the target branch is slightly deteriorated, it is necessary to replace it with an open-hole type diversion seal fixing bolt one size larger; when the target branch is moderately deteriorated, it is necessary to replace it with an open-hole type diversion seal fixing bolt two sizes larger; and when the target branch is highly deteriorated, it is necessary to replace it with an open-hole type diversion seal fixing bolt three sizes larger.

[0086] In one embodiment of this application, determining the deviation degree of the target branch based on the comparison results further includes: determining the level of the target branch's performance above theoretical requirements based on the difference between each type of collected data of the target branch and the corresponding preset theoretical data; determining the model of the replaced open-hole type diversion seal fixing bolt based on the deviation degree includes: determining the reduced model of the replaced open-hole type diversion seal fixing bolt based on the level of performance above theoretical requirements, wherein the reduced model of the replaced open-hole type diversion seal fixing bolt is positively correlated with the level of performance above theoretical requirements.

[0087] Specifically, in this embodiment, each type of data collected from the target branch is compared with the corresponding preset theoretical data under the current operating conditions to calculate the difference between the actual monitoring data and the theoretical data. Then, based on the magnitude by which each type of actual monitoring data exceeds the theoretical data, the level of superiority of the target branch compared to the theoretical requirement is determined. The levels of superiority include: slightly superior, moderately superior, and highly superior. For example, when the difference between the measured data and the theoretical data is greater than a certain threshold, the level of superiority of the target branch compared to the theoretical requirement is determined to be highly superior; conversely, when the difference is less than a certain threshold, the level of superiority of the target branch compared to the theoretical requirement is determined to be slightly superior.

[0088] Furthermore, based on the level of performance exceeding theoretical requirements, it is determined whether the replaced open-hole type diversion seal fixing bolt needs to be replaced, and the size of the replaced open-hole type diversion seal fixing bolt should be reduced. Among these, the target branch with a higher level of performance exceeding theoretical requirements should have a smaller size of the replaced open-hole type diversion seal fixing bolt.

[0089] Continue to refer to Figure 8 As shown in the example, the reduction in size of the replaced open-hole type diversion seal fixing bolt compared to the originally installed one is positively correlated with the level of improvement over theoretical requirements; that is, the higher the level of improvement over theoretical requirements, the smaller the size reduction of the replaced open-hole type diversion seal fixing bolt. For example, such as... Figure 8 As shown, compared to the originally installed open-hole type diversion seal fixing bolt, when the target branch is slightly better, it is not necessary to replace the open-hole type diversion seal fixing bolt, which is equivalent to replacing the open-hole type diversion seal fixing bolt with a size of zero. When the target branch is moderately better, it is necessary to replace it with an open-hole type diversion seal fixing bolt one size smaller. When the target branch is highly better, it is necessary to replace it with an open-hole type diversion seal fixing bolt two sizes smaller.

[0090] It should be noted that when the actual monitoring data of a certain branch is better than the theoretical data, since the data of other branches are consistent with the theoretical data, there will be a significant deviation between the better data of that branch and the data of other branches. This deviation is detrimental to the battery's lifespan. Because batteries require a high degree of consistency, ideally all cell temperature and other data should be consistent. Therefore, this application also addresses the situation where the data is better than the theoretical data to improve the comprehensiveness of the shunt orifice adjustment of the liquid cooling branch.

[0091] It should also be noted that the embodiments of this application compare and adjust the branch data based on the current operating conditions, taking into account the impact of data under different operating conditions on the adjustment process, thereby improving the accuracy and applicability of branch adjustment.

[0092] Step S104: Replace the original open-hole shunt sealing bolt in the shunt monitoring component according to the determined model, and re-collect various data of the target branch when the CTP battery is running under the current operating conditions using the replaced shunt monitoring component.

[0093] Specifically, according to the model number determined in the previous step, replace the original open-hole shunt sealing bolt in the shunt monitoring component, and then reinstall the monitoring device. Through the replaced shunt monitoring component, re-collect various data of the target branch when the CTP battery is running under the current operating conditions.

[0094] Then, based on the newly collected data, the branch data is compared and adjusted in the next round, so that it can be done according to... Figure 8 As shown, the monitoring and adjustment of each target branch are carried out cyclically to achieve continuous monitoring of the cooling system branch, ensuring that the adjustment results of each branch can successfully reduce the deviation of abnormal branches and improve the thermal management performance of the CTP battery liquid cooling system.

[0095] In summary, the monitoring method for the CTP battery liquid cooling system branches in this application embodiment sets up a separate corresponding shunt monitoring component for each branch in the CTP battery liquid cooling system. This shunt monitoring component enables monitoring and data acquisition for each liquid cooling branch, thereby achieving branch-specific monitoring and refining the granularity of liquid cooling system monitoring. Furthermore, based on measured data from the branches, this method can adjust the shunt orifice diameter of the battery pack liquid cooling system branches by increasing or decreasing the size of the orifice-type shunt sealing bolts. This allows for adjustment of the coolant flow in each branch according to its actual operating conditions, improving the thermal management performance and operating efficiency of the battery pack liquid cooling system. Moreover, this method requires only one monitoring device and can be applied to monitor battery liquid cooling branches in different operating scenarios. It can also monitor different vehicles separately, improving the utilization rate of the monitoring device and reducing the overall cost of monitoring battery liquid cooling branches. Therefore, this method improves the accuracy, convenience, and applicability of liquid cooling branch monitoring, which is beneficial for ensuring the stable and efficient operation of the CTP battery liquid cooling system.

[0096] To implement the above embodiments, this application also proposes a non-transitory computer-readable storage medium storing a computer program, which, when executed by a processor, implements the monitoring method for the CTP battery liquid cooling system branch as proposed in the second aspect of the present application.

[0097] It should be noted that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0098] Furthermore, in the description of this application, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0099] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0100] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0101] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0102] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this invention.

Claims

1. A monitoring device for a branch of a CTP battery liquid cooling system, characterized in that, include: The system includes an integrated frame, multiple integrated liquid-cooled crossbeams, multiple shunt sealing fixing bolts, and multiple shunt monitoring components. The shunt monitoring components include perforated shunt sealing fixing bolts and monitoring devices. Each of the integrated liquid-cooled crossbeams corresponds to a branch of the CTP battery liquid cooling system. Each of the integrated liquid-cooled crossbeams is equipped with a shunt sealing fixing bolt and a shunt monitoring component. The coolant circulates in the channel formed by the integrated frame, the integrated liquid-cooled crossbeams and the shunt sealing fixing bolts. In the absence of monitoring, each of the diversion seal fixing bolts is screwed onto the corresponding integrated liquid-cooled crossbeam to fix the integrated frame; In the monitoring state, the diversion monitoring component is used to replace the removed diversion sealing fixing bolt and screw it onto the corresponding integrated liquid-cooled crossbeam, and collects various data of the coolant in the current branch based on the monitoring device; The open-hole type diversion sealing fixing bolt includes: a bolt head, a first step, a second step, a second sealing ring, a third sealing ring, a fourth sealing ring, and a fifth sealing ring; wherein, The second sealing ring is engaged in the groove at the rear section of the first step, and the third sealing ring is located at the connection between the first step and the second step; The fourth sealing ring is located at the connection between the second step and the bolt head, and the fifth sealing ring is located on the vertical end face of the bolt head; The open-hole type diversion sealing fixing bolt further includes: a first stepped thread, a threaded hole, a first diversion channel, and a second diversion channel; wherein... The first stepped thread is located at the front section of the first step, and the threaded hole is located at the center inside the bolt head; The second diversion channel is located inside the first step and the second step, and the first diversion channel is located on the second step; The first diversion channel and the second diversion channel are interconnected, and the second diversion channel is also connected to the threaded hole.

2. The monitoring device for the CTP battery liquid cooling system branch according to claim 1, characterized in that, The monitoring device includes: a communication harness, a monitoring processor, a threaded post, a sampling extension harness, and a sampling sensor; wherein, The threaded post is used to fix the monitoring device on the open-hole type diversion seal fixing bolt by matching with the threaded hole; The length of the sampling extension harness is adjustable, and the sampling extension harness is used to transport the sampling sensor to the corresponding sampling position; The sampling sensor is located at the front end of the sampling extension harness, and the sampling sensor is used to collect various data of the coolant in the current branch. The monitoring processor is used to receive and process the data collected by the sampling sensor, and send the pre-processed data to the communication harness. The communication harness is used to transmit the received data to an external device.

3. The monitoring device for the CTP battery liquid cooling system branch according to claim 2, characterized in that, Also includes: A data acquisition device, which is connected to the communication harness, is used to send the pre-processed data to a computer processor. The computer processor is used to analyze and perform calculations on the pre-processed data.

4. A monitoring method for a branch of a CTP battery liquid cooling system, characterized in that, A monitoring device applied to a branch of a CTP battery liquid cooling system as described in any one of claims 1-3, wherein the monitoring method comprises the following steps: Identify at least one target branch to be monitored in the CTP battery liquid cooling system, remove the shunt sealing fixing bolt of the target branch, and identify a shunt monitoring component that matches the removed shunt sealing fixing bolt. The current shunt monitoring component is installed on the target branch, and various data of the target branch are collected by the current shunt monitoring component when the CTP battery is running under the current operating conditions. Each data point of the target branch is compared with the corresponding preset theoretical data. The degree of deviation of the target branch is determined based on the comparison results, and the model of the replaced open-hole type diversion seal fixing bolt is determined based on the degree of deviation. Replace the original perforated shunt sealing bolt in the shunt monitoring component according to the determined model, and re-collect various data of the target branch when the CTP battery is running under the current operating conditions using the replaced shunt monitoring component.

5. The monitoring method for the CTP battery liquid cooling system branch according to claim 4, characterized in that, The shunt monitoring group that matches the shunt sealing fixing bolts that have been removed includes: Obtain an open-hole type diversion sealing bolt of the same model as the diversion sealing bolt, and determine whether the cross-sectional area of ​​the first diversion channel of the diversion sealing bolt and the open-hole type diversion sealing bolt are the same. When the cross-sectional area of ​​the first diversion channel is the same, calculate the difference between the cross-sectional area of ​​the second diversion channel of the diversion sealing fixing bolt and the cross-sectional area of ​​the second diversion channel of the open-hole diversion sealing fixing bolt, and determine whether the difference is equal to the cross-sectional area of ​​the sampling extension harness of the diversion monitoring component. The shunt monitoring component whose difference is equal to the cross-sectional area of ​​the sampling extension harness is used as the matched shunt monitoring component.

6. The monitoring method for the CTP battery liquid cooling system branch according to claim 4, characterized in that, Determining the degree of deviation of the target branch based on the comparison results includes: The degradation level of the target branch is determined based on the difference between each type of collected data and the corresponding preset theoretical data. The process of determining the model of the replaced open-hole type diversion seal fixing bolt based on the degree of deviation includes: The size of the replaced open-hole type diversion seal fixing bolt is determined according to the deterioration level, wherein the size of the replaced open-hole type diversion seal fixing bolt is positively correlated with the deterioration level.

7. The monitoring method for the CTP battery liquid cooling system branch according to claim 4, characterized in that, The step of determining the degree of deviation of the target branch based on the comparison results also includes: The level of the target branch's performance relative to the theoretical requirement is determined based on the difference between each type of collected data and the corresponding preset theoretical data. The process of determining the model of the replaced open-hole type diversion seal fixing bolt based on the degree of deviation includes: The reduced model of the replaced open-hole type diversion seal fixing bolt is determined based on the level of improvement over theoretical requirements, wherein the reduced model of the replaced open-hole type diversion seal fixing bolt is positively correlated with the level of improvement over theoretical requirements.

8. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the monitoring method for the CTP battery liquid cooling system branch as described in any one of claims 4-7.

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