CTP battery liquid cooling system branch monitoring device and method

Abstract

The invention discloses a monitoring device and method for a CTP battery liquid cooling system branch, the device comprises an integrated frame, a plurality of integrated liquid cooling cross beams, a plurality of shunting sealing fixing bolts and a plurality of shunting monitoring assemblies, and each shunting monitoring assembly comprises a perforated shunting sealing fixing bolt and a monitoring device; each integrated liquid cooling cross beam corresponds to one branch of the CTP battery liquid cooling system and is correspondingly provided with one shunting sealing fixing bolt and one shunting monitoring assembly; in a non-monitoring state, each shunting sealing fixing bolt is screwed on the corresponding integrated liquid cooling cross beam; and in a monitoring state, the shunting monitoring assembly is used for replacing the detached shunting sealing fixing bolt, is screwed on the corresponding integrated liquid cooling cross beam, and collects various data of the cooling liquid in the current branch based on the monitoring device. The device can accurately monitor the data of each liquid cooling branch, and the accuracy and convenience of liquid cooling branch monitoring are improved.

Description

Technical Field

[0001] The present application relates to the technical field of CTP battery data monitoring, and in particular to a monitoring device and method for a branch circuit of a CTP battery liquid cooling system. Background Art

[0002] At present, the module-free power battery pack (Cell to Pack, CTP for short) has been widely used in various fields such as electric vehicles due to its advantages such as high space utilization, small size and weight. In order to reduce the temperature of the battery during operation and improve the safety of the battery, it is necessary to equip the CTP battery with a liquid cooling system. In order to ensure the normal operation of the liquid cooling system, it is necessary to monitor the operating data of the liquid cooling system.

[0003] In the related art, usually only the entire liquid cooling system can be monitored, but in actual applications, the liquid cooling system may contain multiple branches. The monitoring scheme in the related art cannot collect data and monitor any CTP battery liquid cooling system branch, resulting in the inability to adjust the liquid cooling branch, affecting the operation effect of the liquid cooling system. Summary of the invention

[0004] The purpose of this application is to solve one of the above-mentioned technical problems at least to a certain extent.

[0005] To this end, the first purpose of this application is to propose a monitoring device for a CTP battery liquid cooling system branch. The device can accurately monitor the data of each liquid cooling branch and adjust the branch flow aperture based on the measured data, thereby improving the accuracy and convenience of liquid cooling branch monitoring and solving the problem of being unable to monitor and adjust the data of any CTP battery liquid cooling system branch.

[0006] The second object of the present application is to provide a monitoring method for a branch circuit of a CTP battery liquid cooling system.

[0007] A third object of the present application is to provide a non-transitory computer-readable storage medium.

[0008] To achieve the above-mentioned purpose, the first embodiment of the present application proposes a monitoring device for a CTP battery liquid cooling system branch, the device comprising: an integrated frame, a plurality of integrated liquid cooling beams, a plurality of shunt sealing fixing bolts and a plurality of shunt monitoring components, wherein the shunt monitoring components comprise an open-hole shunt sealing fixing bolt and a monitoring device; wherein,

[0009] Each of the integrated liquid cooling beams corresponds to a branch of the CTP battery liquid cooling system, and each of the integrated liquid cooling beams is correspondingly equipped with a shunt sealing fixing bolt and a shunt monitoring component, and the coolant circulates in the channel formed by the integrated frame, the integrated liquid cooling beam and the shunt sealing fixing bolt;

[0010] In a state where no monitoring is performed, each of the split flow sealing fixing bolts is screwed onto the corresponding integrated liquid cooling cross beam to fix the integrated frame;

[0011] In the monitoring state, the shunt monitoring assembly is used to replace the removed shunt sealing fixing bolts and is screwed onto the corresponding integrated liquid cooling beam, and various data of the coolant in the current branch are collected based on the monitoring device.

[0012] In addition, the monitoring device for the CTP battery liquid cooling system branch of the embodiment of the present application 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 stuck in the groove of 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.

[0014] Optionally, in some embodiments, the open-hole type diverter sealing fixing bolt further includes: a first step thread, a threaded hole, a first diverter channel and a second diverter channel; wherein, the first step thread is located at the front section of the first step, and the threaded hole is located at the center of the bolt head; the second diverter channel is arranged inside the first step and the second step, and the first diverter channel is arranged on the second step; the first diverter channel and the second diverter channel are connected to each other, and the second diverter channel is also connected to the threaded hole.

[0015] Optionally, in some embodiments, the monitoring device includes: a communication harness, a monitoring processor, a threaded column, a sampling extension harness and a sampling sensor; wherein the threaded column is used to cooperate with the threaded hole to fix the monitoring device on the open-hole shunt sealing fixing bolt; the length of the sampling extension harness is adjustable, and the sampling extension harness is used to transport the sampling sensor to a 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 preliminarily 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, it also includes: a data collector, which is connected to the communication harness, and is used to send the preliminarily processed data to the computer processor; the computer processor is used to perform analysis and calculation on the preliminarily processed data.

[0017] To achieve the above object, a second embodiment of the present invention provides a method for monitoring a branch of a CTP battery liquid cooling system, which is applied to the monitoring device for a branch of a CTP battery liquid cooling system of the first aspect, and the method comprises:

[0018] Determine 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 determine the shunt monitoring assembly that matches the removed shunt sealing fixing bolts;

[0019] Install the shunt monitoring component on the target branch, and collect various data of the target branch when the CTP battery is running under the current working condition through the shunt monitoring component;

[0020] Compare each of the collected data of the target branch with the corresponding preset theoretical data, determine the deviation degree of the target branch according to the comparison result, and determine the model of the replaced open-hole type flow splitter sealing fixing bolt according to the deviation degree;

[0021] The original open-hole shunt sealing fixing bolt in the shunt monitoring component is replaced according to the determined model, and various data of the target branch when the CTP battery is running under the current working condition are re-collected through the replaced shunt monitoring component.

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

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

[0024] Optionally, in some embodiments, determining the degree of deviation of the target branch based on the comparison result 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 shunt sealing fixing bolt based on the deviation degree includes: determining the increased model of the replaced open-hole type shunt sealing fixing bolt based on the degradation level, wherein the increased model of the replaced open-hole type shunt sealing fixing bolt is positively correlated with the degradation level.

[0025] Optionally, in some embodiments, determining the degree of deviation of the target branch according to the comparison result also includes: determining the level of the target branch that is better than 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 shunt sealing fixing bolt according to the deviation degree includes: determining the reduced model of the replaced open-hole type shunt sealing fixing bolt according to the level that is better than theoretical requirements, wherein the reduced model of the replaced open-hole type shunt sealing fixing bolt is positively correlated with the level that is better than theoretical requirements.

[0026] To achieve the above objectives, the third aspect of the present invention proposes a non-temporary computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, a monitoring method for a branch of a CTP battery liquid cooling system as described in any one of the second aspect embodiments above is implemented.

[0027] The technical solution provided by the embodiments of the present application brings at least the following beneficial effects:

[0028] The present application sets a separate corresponding shunt monitoring component for each branch in the CTP battery liquid cooling system. Through the shunt monitoring component, each liquid cooling branch can be monitored and data collected, so that the monitoring of the liquid cooling system branch can be realized, and the granularity of the liquid cooling system monitoring is refined. In addition, the present application can also adjust the shunt aperture of the battery pack liquid cooling system branch based on the measured data of the branch by increasing or decreasing the model of the open-hole shunt seal fixing bolt, so that the flow of coolant in the branch can be adjusted according to the actual operating conditions of each branch, which can improve the thermal management performance of the battery pack liquid cooling system and improve the operating efficiency of the battery pack liquid cooling system. In addition, the present application only requires one set of monitoring devices, which can be applied to battery liquid cooling branch monitoring in different working scenarios, and different vehicles can be detected separately, which improves the utilization rate of the monitoring device and reduces the comprehensive cost of battery liquid cooling branch monitoring. Therefore, the present application improves the accuracy, convenience and applicability of liquid cooling branch monitoring, which is conducive to ensuring the stable and efficient operation of the CTP battery liquid cooling system.

[0029] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0031] Figure 1 A schematic diagram of the structure of a monitoring device for a CTP battery liquid cooling system branch circuit proposed in an embodiment of the present application;

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

[0033] Figure 3 A schematic diagram of the structure of a flow diversion monitoring component proposed in an embodiment of the present application;

[0034] Figure 4 A schematic diagram of the structure of a specific flow diversion monitoring component proposed in an embodiment of the present application;

[0035] Figure 5 A cross-sectional schematic diagram of an open-hole type flow-dividing sealing fixing bolt proposed in an embodiment of the present application;

[0036] Figure 6 A schematic diagram of a data acquisition and processing system proposed in an embodiment of the present application;

[0037] Figure 7 A flow chart of a method for monitoring a branch of a CTP battery liquid cooling system proposed in an embodiment of the present application;

[0038] Figure 8 The present invention is a flowchart of a specific method for monitoring a branch circuit of a CTP battery liquid cooling system proposed in an embodiment of the present application. DETAILED DESCRIPTION

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

[0040] The following describes a monitoring device and method for a branch circuit of a CTP battery liquid cooling system according to an embodiment of the present application 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 circuit proposed in an embodiment of the present application. Figure 2 A schematic diagram of the structure of another monitoring device for a CTP battery liquid cooling system branch circuit proposed in an embodiment of the present application is shown in FIG. Figure 1 and Figure 2 As shown, the device includes: an integrated frame 10, a plurality of integrated liquid-cooled beams 20, a plurality of shunt sealing fixing bolts 30 and a plurality of shunt monitoring components 40, and the shunt monitoring components 40 include open-hole shunt sealing fixing bolts 41 and a monitoring device 42.

[0042] Each integrated liquid cooling beam 20 corresponds to a branch of the CTP battery liquid cooling system, and each integrated liquid cooling beam 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, and the coolant circulates in a channel formed by an integrated frame 10, an integrated liquid cooling beam 20 and a shunt sealing fixing bolt (the bolt may be a shunt sealing fixing bolt 30 or an open-hole shunt sealing fixing bolt 41, depending on whether it is actually in a monitoring state).

[0043] Specifically, when the liquid cooling system branch is not monitored, each shunt seal fixing bolt 30 is screwed on the corresponding integrated liquid cooling beam 20 to fix the integrated frame 10. When the liquid cooling system branch is monitored, the shunt monitoring assembly 40 is used to replace the removed shunt seal fixing bolt 30 and screw it on the corresponding integrated liquid cooling beam 20, and collect various data of the coolant in the current branch based on the monitoring device 41.

[0044] In specific implementation, as a possible implementation method, the shunt sealing fixing bolt 30 has a thread and a sealing structure, which is screwed into the corresponding hole of the integrated liquid cooling beam 20 to fix the integrated frame 10. When no monitoring is performed, that is, before the shunt sealing fixing bolt 30 is removed, the functions of the shunt sealing fixing bolt 30 include fixing the integrated frame 10, shunting and sealing the branch. When a branch needs to be monitored, such as Figure 2 As shown, it is necessary to first remove the branch seal fixing bolt 30 of the branch, and then Figure 1 As shown, the corresponding shunt monitoring assembly 40 is screwed into the corresponding hole of the integrated liquid-cooling beam 20 .

[0045] It should be noted that each integrated liquid cooling beam 10 is a separate branch in the CTP battery liquid cooling system regardless of whether it is in the monitoring loop. According to the actual monitoring requirements of the liquid cooling system branches, several shunt monitoring components 40 can be set accordingly when it is determined that several branches need to be monitored.

[0046] like Figure 3As shown, the shunt monitoring assembly 40 includes an open-hole shunt sealing fixing bolt 41 and a monitoring device 42, wherein the open-hole shunt sealing fixing bolt 41 also has a thread and a sealing structure, and its fixing method is the same as the above-mentioned shunt sealing fixing bolt 30. After the shunt monitoring assembly 40 is screwed, in addition to the shunt sealing fixing bolt 30 fixing the integrated frame 10, shunting and sealing the branch, the shunt monitoring assembly 40 also monitors the branch through the monitoring device 42 and collects various data on the branch.

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

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

[0049] The following is a detailed description of the flow diversion monitoring component 40 of the present application. In one embodiment of the present application, Figure 4 As shown, the open hole type flow dividing sealing fixing bolt 41 comprises: 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. Among them, the second sealing ring 4 is stuck in the groove of 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 clamp 4 is located at a position where there is no thread in the rear section of the first step 2, and a groove can be provided here to clamp 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 pasted on the vertical end face on the left side of the second step 3 as shown in the figure. The fourth sealing ring 5 is located at the connection between the second step 3 and the bolt head 1, and can be pasted on the vertical end face on the left side of the bolt head 1 as shown in the figure. The fifth sealing ring 7 is located at the end face of the bolt head 1, and can be pasted on the vertical end face of the bolt head 1.

[0051] Continue to refer to Figure 4In the example shown, the open hole type flow dividing sealing fixing bolt 41 also includes: a first step thread 8, a threaded hole 9, a first flow dividing channel 11 and a second flow dividing channel 12. The first step thread 8 is located at the front section of the first step 2, and the threaded hole 9 is located at the center of the bolt head 1; the second flow dividing channel 12 is arranged inside the first step 2 and the second step 3, and the first flow dividing channel 11 is arranged on the second step 3; the first flow dividing channel 11 and the second flow dividing channel 12 are connected to each other, and the second flow dividing 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 the bolt. Figure 5 As shown, a portion of the second shunt channel 12 is provided inside the first step 2 and the second step 3, the first shunt channel 11 is provided on the second step 3, the first shunt channel 11 runs through the second step 3, and the first shunt channel 11 and the second shunt channel 12 have an intersection area to communicate with each other. Based on this, the coolant can flow from the flow channel in the integrated frame 10 into the second shunt channel 12, and then flow out to the integrated liquid cooling beam 20 after passing through the first shunt channel 11, and vice versa. A threaded hole 9 is provided at the center of the bolt head 1, and the threaded hole 9 is also communicated with the second shunt channel 12.

[0053] In one embodiment of the present application, Figure 4 As shown, the monitoring device 42 includes: a communication harness 13, a monitoring processor 14, a threaded column 15, a sampling extension harness 16 and a sampling sensor 17. The threaded column 15 is used to fix the monitoring device 42 on the open-hole type shunt seal fixing bolt 41 by matching with the threaded hole 9; the length of the sampling extension harness 16 is adjustable, and the sampling extension harness 16 is used to transport 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 the sampling sensor 17 is used to collect various data of the coolant in the current branch; the monitoring processor 14 is used to receive and process the data collected by the sampling sensor 17, and send the preliminarily processed data to the communication harness 13, and the communication harness 13 is used to transmit the received data to an external device.

[0054] Specifically, in this embodiment, after the threaded column 15 and the threaded hole 9 are matched, the monitoring device 42 is fixed on the shunt seal fixing bolt opening type 41. The fifth sealing ring 7 is used to seal between the monitoring device 42 and the opening type shunt seal fixing bolt 41. The sampling sensor 17 is located at the end of the sampling extension harness 16, and can collect various information to be measured, 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 in the second shunt channel or beyond the second shunt channel to collect data at different positions. The monitoring processor 14 is used to receive, preliminarily organize and send the data collected by the sampling sensor 17. The communication harness 13 is used to transmit data to realize the communication interaction between the monitoring device and external equipment.

[0055] Based on the above embodiment, the present application also proposes a data acquisition and processing system to realize the collection and processing of the data collected by the above monitoring device. In one embodiment of the present application, the data acquisition and processing system includes the above-mentioned shunt monitoring component, a data collector and a computer processor. Among them, the data collector is connected to the communication harness, and the data collector is used to send the data after preliminary processing to the computer processor; the computer processor is used to analyze and calculate the data after preliminary processing.

[0056] Specifically, in this embodiment, if Figure 6 As shown, when it is necessary to monitor n branches, n shunt monitoring components are correspondingly set, and each shunt monitoring component is screwed on the corresponding integrated liquid cooling beam in the manner described in the above embodiment. After the shunt monitoring component is installed, the communication harness in the shunt monitoring component is connected to the corresponding channel of the data collector. The output end of the data collector also transmits the preliminary sorted data corresponding to all branches to the computer processor through the communication harness. The computer processor performs a detailed analysis of the preliminary sorted data of each branch.

[0057] For example, the data collected by the sampling sensor can be initially sorted out, which can include removing abnormal data from the collected data, filling in missing data, and performing data format conversion and other preprocessing operations. The computer processor performs a detailed analysis of the data after the initial sorting of each branch, which can include comparative analysis of the collected branch data and determining the adjustment strategy of each branch based on the analysis results.

[0058] In summary, the monitoring device for the CTP battery liquid cooling system branch of the embodiment of the present application sets a separate corresponding shunt monitoring component for each branch in the CTP battery liquid cooling system. Through the shunt monitoring component, each liquid cooling branch can be monitored and data collected, so that the monitoring of the liquid cooling system branch can be realized, the granularity of the liquid cooling system monitoring is refined, and the thermal management performance of the battery pack liquid cooling system can be improved. In addition, only one set of monitoring devices is needed, which can be applied to the battery liquid cooling branch monitoring in different working scenarios, and different vehicles can be detected separately, which improves the utilization rate of the monitoring device and reduces the comprehensive cost of battery liquid cooling branch monitoring. As a result, the device improves the accuracy, convenience and applicability of liquid cooling branch monitoring, which is conducive to ensuring the stable and efficient operation of the CTP battery liquid cooling system.

[0059] In order to more clearly illustrate the specific implementation process of monitoring and adjusting the CTP battery liquid cooling system branch through the monitoring device of the CTP battery liquid cooling system branch, a monitoring method for the CTP battery liquid cooling system branch proposed in the embodiment of the present application is described in detail below. The method is applied to the monitoring device of the CTP battery liquid cooling system branch in the above embodiment, that is, the monitoring device in the above embodiment is used to monitor the CTP battery and the monitoring device is controlled to implement the monitoring method of this embodiment. The monitoring device involved in the method includes various components as described in the above embodiment, which will not be repeated here.

[0060] Figure 7 A flow chart of a monitoring method for a CTP battery liquid cooling system branch circuit proposed in an embodiment of the present application, such as Figure 7 As shown, the method comprises the following steps:

[0061] Step S101: determine 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 determine a shunt monitoring component that matches the removed shunt sealing fixing bolts.

[0062] Specifically, the present application can monitor one or more branches in the 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 relatively important in the liquid cooling system.

[0063] For example, the target branches to be monitored may include: branches that may have abnormalities when designing and simulating the branches 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 more abnormalities than others determined based on historical operating experience.

[0064] Furthermore, after determining each target branch to be monitored, the shunt sealing fixing bolts installed on each target branch are removed, and then for each target branch, a shunt monitoring assembly matching the shunt sealing fixing bolts removed from each branch is determined.

[0065] It should be noted that, as described in the above embodiment, the present application realizes the flow diversion of the branch of the liquid cooling system based on the effective opening area of ​​the hole-type diverter seal fixing bolt 41, and the effective opening area needs to be consistent with the diverter hole area of ​​the replaced diverter seal fixing bolt to avoid the replacement operation changing the actual liquid flow. The present application can determine the diverter monitoring component that matches the removed diverter seal fixing bolt based on the effective opening area.

[0066] In one embodiment of the present application, determining a shunt monitoring group that matches the removed shunt sealing fixing bolt includes: first obtaining an open-hole shunt sealing fixing bolt of the same model as the shunt sealing fixing bolt, and determining whether the cross-sectional area of ​​the first shunt channel of the shunt sealing fixing bolt is the same as that of the open-hole shunt sealing fixing bolt; when 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 fixing bolt and the cross-sectional area of ​​the second shunt channel of the open-hole shunt sealing fixing bolt, and determining whether the difference is equal to the cross-sectional area of ​​the sampling extension harness of the shunt monitoring assembly; and using the shunt monitoring assembly whose difference is equal to the cross-sectional area of ​​the sampling extension harness as a matching shunt monitoring assembly.

[0067] Specifically, in this embodiment, taking any target branch as an example, the model of the shunt sealing fixing bolt removed on the target branch is first determined, and the same model of the open-hole type shunt sealing fixing bolt is selected for subsequent matching judgment, so as to shorten the matching process as much as possible and improve the matching efficiency. Then, it is determined whether the cross-sectional area of ​​the first shunt channel of the removed shunt sealing fixing bolt is the same as the cross-sectional area of ​​the first shunt channel of the open-hole type shunt sealing fixing bolt to be selected. If they are the same, the matching judgment of the effective opening area is performed.

[0068] The effective opening area is equal to the circular hole area of ​​the opening type flow splitting seal fixing bolt minus the cross-sectional area of ​​the extended sampling line. Figure 5 It can be known that the opening area of ​​the open-hole type diverter sealing fixing bolt is the cross-sectional area of ​​the second diverter channel. Therefore, if the effective opening area of ​​the open-hole type diverter sealing fixing bolt is the same as the cross-sectional area of ​​the second diverter channel of the removed diverter sealing fixing bolt, it can be determined that the two match.

[0069] That is, the matching judgment of the effective opening area can be performed by the following formula:

[0070] The cross-sectional area of ​​the second flow channel of the open-hole flow-dividing sealing fixing bolt minus the cross-sectional area of ​​the second flow channel of the removed flow-dividing sealing fixing bolt = M

[0071] Wherein, M is the cross-sectional area of ​​the sampling extension line of the opening type shunt seal fixing bolt. If the above formula is satisfied, it means that the effective opening area of ​​the shunt monitoring component to be selected matches.

[0072] Then, the shunt monitoring assembly that meets the above two judgment conditions is used as the selected shunt monitoring assembly that matches the removed shunt sealing fixing bolt. For each target branch, a matching shunt monitoring assembly can be selected in the above manner.

[0073] Step S102: installing a shunt monitoring component on the target branch, and collecting various data of the target branch when the CTP battery is running under the current working condition 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 Figure 6 In the manner shown, each shunt monitoring component is connected to the data acquisition and processing system. Then, each shunt monitoring component is used to collect various data in the target branch when the CTP battery is running under the current working condition.

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

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

[0077] Furthermore, when collecting various data of the target branch through the installed shunt monitoring component, first determine the operating conditions that the CTP battery currently needs to operate. For example, the current operating conditions that need to be operated can be any one of high-temperature fast charging, normal temperature fast charging, low-temperature fast charging, low-temperature insulation, normal temperature discharge, high-temperature discharge and low-temperature discharge, etc., which are determined according to the actual operating scenario of the CTP battery. When the CTP battery and the equipment it is in are operating according to the current operating conditions, the branch data collected by the shunt monitoring component on each target branch is recorded by the computer processor.

[0078] For example, the CTP battery is charged and discharged according to the working conditions of the equipment where the CTP battery is located. When the CTP battery liquid cooling system branch on the electric vehicle is monitored, the electric vehicle directly drives or charges according to the working conditions, while for a single battery pack, it can be charged and discharged by the test bench. Then record all the data collected by each shunt monitoring component when the CTP battery is running according to the working conditions.

[0079] Therefore, this step can realize separate monitoring of each branch in the CTP battery liquid cooling system.

[0080] Step S103: Compare each type of data collected for the target branch with the corresponding preset theoretical data, determine the degree of deviation of the target branch according to the comparison result, and determine the model of the replaced open-hole type shunt sealing fixing bolt according to the degree of deviation.

[0081] Specifically, this step adjusts the shunt aperture of each target branch according to the actual monitoring data based on the separate monitoring of each target branch. During the adjustment process, the collected monitoring data of each target branch is first compared with the expected theoretical data of the target branch under the current working conditions, and the degree of deviation of each target branch is determined according to the comparison results, including lower than the theoretical data and higher than the theoretical data. Finally, different types of open-hole shunt sealing fixing bolts are replaced according to the degree of deviation, so as to achieve the adjustment of the shunt aperture of corresponding size according to the degree of deviation, thereby improving the accuracy and applicability of the shunt aperture adjustment for each branch.

[0082] In one embodiment of the present application, the degree of deviation of the target branch is determined based on the comparison result, including: 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 shunt seal fixing bolt based on the degree of deviation, including: determining the increased model of the replaced open-hole type shunt seal fixing bolt based on the degradation level, wherein the increased model of the replaced open-hole type shunt seal fixing bolt is positively correlated with the degradation level.

[0083] Specifically, in this embodiment, each type of data collected by the target branch is compared with the preset theoretical data under the corresponding current working conditions, and the difference between the actual monitoring data and the theoretical data is calculated, wherein the data collected by each target branch may include the temperature, flow rate and flow rate of the coolant in the branch. When the actual monitoring data is less than the theoretical data, the degradation level of the target branch is determined based on the difference between each actual monitoring data and the theoretical data. The degradation levels include: mild degradation, moderate degradation and severe degradation. For example, when 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. For another example, when 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] Then, the size of the opening-type shunt seal fixing bolt after replacement is determined according to the degradation level, wherein the higher the degradation level of the target branch, the larger the size of the opening-type shunt seal fixing bolt that needs to be replaced. Figure 8 The specific monitoring and adjustment process shown is explained.

[0085] like Figure 8 As shown in the figure, the size of the replaced open hole type shunt seal fixing bolt is positively correlated with the degradation level compared with the originally installed open hole type shunt seal fixing bolt, that is, the higher the degradation level, the larger the size of the replaced open hole type shunt seal fixing bolt. Figure 8 As shown, compared with the originally installed open-hole type shunt sealing fixing bolts, when the target branch is slightly degraded, it is necessary to replace the open-hole type shunt sealing fixing bolts with one size larger, when the target branch is moderately degraded, it is necessary to replace the open-hole type shunt sealing fixing bolts with two sizes larger, and when the target branch is severely degraded, it is necessary to replace the open-hole type shunt sealing fixing bolts with three sizes larger.

[0086] In one embodiment of the present application, the degree of deviation of the target branch is determined based on the comparison result, and also includes: determining the level of the target branch that is better than the theoretical requirement 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 shunt sealing fixing bolt according to the degree of deviation, including: determining the reduced model of the replaced open-hole type shunt sealing fixing bolt according to the level that is better than the theoretical requirement, wherein the reduced model of the replaced open-hole type shunt sealing fixing bolt is positively correlated with the level that is better than the theoretical requirement.

[0087] Specifically, in this embodiment, each type of data collected by the target branch is compared with the preset theoretical data under the corresponding current working conditions, and the difference between the actual monitoring data and the theoretical data is calculated. Then, according to the size of each actual monitoring data greater than the theoretical data, the target branch is determined to be better than the theoretical demand level, and the levels of being better than the theoretical demand include: slightly better than, moderately better than, and highly better than. For example, when the difference between the measured data and the theoretical data is greater than a certain threshold, the target branch is determined to be highly better than the theoretical demand level. For another example, when the difference is less than a certain threshold, the target branch is determined to be slightly better than the theoretical demand level.

[0088] Furthermore, based on the level that is better than the theoretical requirement, it is determined whether the open-hole type shunt sealing fixing bolts need to be replaced, and the model of the open-hole type shunt sealing fixing bolts after replacement should be reduced. Among them, the higher the level that is better than the theoretical requirement, the smaller the model of the open-hole type shunt sealing fixing bolts that need to be replaced.

[0089] Continue to refer to Figure 8 In the example shown, the size reduction of the replaced open-hole type flow splitter seal fixing bolt compared to the originally installed open-hole type flow splitter seal fixing bolt is positively correlated with the level of excellence in theoretical requirements, that is, the higher the level of excellence in theoretical requirements, the smaller the size reduction of the replaced open-hole type flow splitter seal fixing bolt. Figure 8 As shown, compared with the originally installed open-hole type shunt sealing fixing bolts, when the target branch is slightly better than the original one, there is no need to replace the open-hole type shunt sealing fixing bolts, which is equivalent to replacing the open-hole type shunt sealing fixing bolt model zero. When the target branch is moderately better than the original one, it is necessary to replace it with a smaller open-hole type shunt sealing fixing bolt. When the target branch is highly better than the original one, it is necessary to replace it with a smaller open-hole type shunt sealing fixing bolt.

[0090] It should be noted that when the actual monitoring data of a branch is better than the theoretical data, since the data of other branches are consistent with the theoretical data, there will be a large deviation between the data that the branch is better than and the data of other branches, and this deviation is not conducive to the service life of the battery. Since the battery requires a high degree of consistency, all data such as the temperature of the battery cells should be kept consistent under ideal conditions. Therefore, this application also handles the situation that is better than the theoretical data to improve the comprehensiveness of the shunt aperture adjustment of the liquid cooling branch.

[0091] It should also be noted that the embodiment of the present application compares and adjusts branch data based on the current operating conditions, takes into account the impact of data under different operating conditions on the adjustment process, and improves the accuracy and applicability of branch adjustment.

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

[0093] Specifically, according to the increased or decreased model determined in the previous step, replace the original open-hole shunt sealing fixing bolts in the shunt monitoring assembly, and then reinstall the monitoring device. Through the replaced shunt monitoring assembly, re-collect various data of the target branch when the CTP battery is running under the current working conditions.

[0094] Then, the next round of branch data comparison and adjustment is carried out according to the re-collected data, so that Figure 8 In the manner shown, each target branch is monitored and adjusted cyclically to achieve continuous monitoring of the cold system branches, ensuring that the adjustment results of each branch can successfully reduce the deviation of the abnormal branch and improve the thermal management performance of the CTP battery liquid cooling system.

[0095] In summary, the monitoring method of the CTP battery liquid cooling system branch of the embodiment of the present application sets a separate corresponding shunt monitoring component for each branch in the CTP battery liquid cooling system, and each liquid cooling branch can be monitored and data collected through the shunt monitoring component, so that the monitoring of the liquid cooling system branch can be realized, and the granularity of the liquid cooling system monitoring is refined. In addition, the method can also adjust the shunt aperture of the battery pack liquid cooling system branch based on the measured data of the branch by increasing or decreasing the model of the open-hole shunt seal fixing bolt, so that the flow of coolant in the branch can be adjusted according to the actual operating conditions of each branch, which can improve the thermal management performance of the battery pack liquid cooling system and improve the operating efficiency of the battery pack liquid cooling system. In addition, the method only requires a set of monitoring devices, which can be applied to the battery liquid cooling branch monitoring in different working scenarios, and can detect different vehicles separately, thereby improving the utilization rate of the monitoring device and reducing the comprehensive cost of the battery liquid cooling branch monitoring. Therefore, the method improves the accuracy, convenience and applicability of liquid cooling branch monitoring, which is conducive to ensuring the stable and efficient operation of the CTP battery liquid cooling system.

[0096] In order to implement the above-mentioned embodiment, the present application also proposes a non-temporary computer-readable storage medium storing a computer program, which, when executed by a processor, implements the monitoring method of the CTP battery liquid cooling system branch proposed in the aforementioned second aspect embodiment of the present application.

[0097] It should be noted that it should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0098] In addition, in the description of the present application, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0099] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0100] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0101] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0102] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A monitoring device for a branch circuit of a CTP battery liquid cooling system, characterized in that: include: An integrated frame, multiple integrated liquid cooling beams, multiple shunt sealing fixing bolts and multiple shunt monitoring components, wherein the shunt monitoring component includes an open-hole shunt sealing fixing bolt and a monitoring device; wherein, Each of the integrated liquid cooling beams corresponds to a branch of the CTP battery liquid cooling system, and each of the integrated liquid cooling beams is correspondingly equipped with a shunt sealing fixing bolt and a shunt monitoring component, and the coolant circulates in the channel formed by the integrated frame, the integrated liquid cooling beam and the shunt sealing fixing bolt; In a state where no monitoring is performed, each of the split flow sealing fixing bolts is screwed onto the corresponding integrated liquid cooling cross beam to fix the integrated frame; When monitoring is in progress, the shunt monitoring assembly is used to replace the removed shunt sealing fixing bolts and is screwed onto the corresponding integrated liquid cooling cross beam, and various data of the coolant in the current branch are collected based on the monitoring device.

2. The monitoring device for the CTP battery liquid cooling system branch according to claim 1, characterized in that: The open-hole type flow-dividing sealing fixing bolt comprises: 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 clamped in the groove of 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.

3. The monitoring device for the CTP battery liquid cooling system branch according to claim 2, characterized in that: The open-hole type flow-dividing sealing fixing bolt further comprises: a first stepped thread, a threaded hole, a first flow-dividing channel and a second flow-dividing channel; wherein, The first step thread is located at the front section of the first step, and the threaded hole is located at the center of the bolt head; The second flow diversion channel is arranged inside the first step and the second step, and the first flow diversion channel is arranged on the second step; The first shunt channel and the second shunt channel are communicated with each other, and the second shunt channel is also communicated with the threaded hole.

4. The monitoring device for the CTP battery liquid cooling system branch according to claim 3, characterized in that: The monitoring device comprises: a communication harness, a monitoring processor, a threaded column, a sampling extension harness and a sampling sensor; wherein, The threaded column is used to fix the monitoring device on the open-hole type split flow sealing 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 a 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 preliminarily processed data to the communication harness, and the communication harness is used to transmit the received data to an external device.

5. The monitoring device for the CTP battery liquid cooling system branch according to claim 4, characterized in that: Also includes: A data collector, the data collector is connected to the communication harness, and the data collector is used to send the preliminarily processed data to the computer processor; The computer processor is used to perform analysis and calculation on the data after the preliminary processing.

6. A method for monitoring a branch circuit of a CTP battery liquid cooling system, characterized in that: A monitoring device for a CTP battery liquid cooling system branch circuit applied to any one of claims 1 to 5, wherein the monitoring method comprises the following steps: Determine 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 determine the shunt monitoring assembly that matches the removed shunt sealing fixing bolts; Install the shunt monitoring component on the target branch, and collect various data of the target branch when the CTP battery is running under the current working condition through the shunt monitoring component; Compare each of the collected data of the target branch with the corresponding preset theoretical data, determine the deviation degree of the target branch according to the comparison result, and determine the model of the replaced open-hole type flow splitter sealing fixing bolt according to the deviation degree; The original open-hole shunt sealing fixing bolt in the shunt monitoring component is replaced according to the determined model, and various data of the target branch when the CTP battery is running under the current working condition are re-collected through the replaced shunt monitoring component.

7. The method for monitoring a branch circuit of a CTP battery liquid cooling system according to claim 6, characterized in that: The step of determining a shunt monitoring group that matches the removed shunt sealing fixing bolt comprises: Obtaining an open-hole type shunt sealing fixing bolt of the same model as the shunt sealing fixing bolt, and determining whether the cross-sectional area of ​​the first shunt passage of the shunt sealing fixing bolt is the same as that of the open-hole type shunt sealing fixing bolt; When the cross-sectional areas of the first shunt channels are the same, the difference between the cross-sectional areas of the second shunt channels of the shunt sealing fixing bolt and the second shunt channels of the open-hole shunt sealing fixing bolt is calculated to determine whether the difference is equal to the cross-sectional area of ​​the sampling extension harness of the shunt monitoring assembly; The shunt monitoring component whose difference is equal to the cross-sectional area of ​​the sampling extension harness is used as the matching shunt monitoring component.

8. The method for monitoring a branch circuit of a CTP battery liquid cooling system according to claim 6, characterized in that: Determining the deviation degree of the target branch according to the comparison result includes: Determining a degradation level of the target branch according to a difference between each collected data of the target branch and the corresponding preset theoretical data; The method of determining the model of the replaced open hole type flow splitter seal fixing bolt according to the degree of deviation includes: The increased model of the replaced open-hole type shunt seal fixing bolt is determined according to the degradation level, wherein the increased model of the replaced open-hole type shunt seal fixing bolt is positively correlated with the degradation level.

9. The method for monitoring a branch circuit of a CTP battery liquid cooling system according to claim 6, characterized in that: The step of determining the deviation degree of the target branch according to the comparison result further includes: Determining the level of the target branch that is superior to the theoretical requirement according to the difference between each collected data of the target branch and the corresponding preset theoretical data; The method of determining the model of the replaced open hole type flow splitter seal fixing bolt according to the degree of deviation includes: The reduced model of the open-hole type shunt seal fixing bolt after replacement is determined based on the level that is better than the theoretical requirement, wherein the reduced model of the open-hole type shunt seal fixing bolt after replacement is positively correlated with the level that is better than the theoretical requirement.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for monitoring a branch of a CTP battery liquid cooling system as described in any one of claims 6 to 9 is implemented.

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