Method and device for detecting branch flow of liquid cooling part

Abstract

The embodiment of the invention provides a liquid cooling part branch flow detection method and device, and relates to the field of batteries. The detection method comprises the steps that the liquid cooling piece communicates with cooling liquid; respectively heating the cooling liquid in each branch pipe of the liquid cooling piece through a plurality of heat source devices; the cooling liquid temperature Ti of each branch pipe of the liquid cooling piece is measured; and the difference delta Ti between the cooling liquid temperature T and the cooling liquid temperature Ti in each branch pipe is calculated, and the cooling liquid mass flow Mi in each branch pipe is obtained. According to the detection method, the cooling liquid is introduced into each branch pipe of the liquid cooling part, the cooling liquid is heated, the temperature of the cooling liquid is measured on each branch pipe, and the mass flow of the cooling liquid in the branch pipes is obtained by using the temperature difference of the cooling liquid in each branch pipe, so that the detection mode does not damage the liquid cooling part, and the detection accuracy is improved. And the method is suitable for the liquid cooling piece with a multi-channel and small-channel type branch. The embodiment of the invention further provides a detection device, and the detection method can be realized through the detection device.

Description

Technical Field

[0001] The present invention relates to the field of batteries, and in particular to a method and a device for detecting a flow rate of a branch circuit of a liquid cooling component. Background Art

[0002] Power batteries or energy storage batteries generate a lot of heat during use, so the batteries need to be cooled down. Existing heat dissipation and cooling methods mostly use liquid cooling, that is, using liquid cooling parts to exchange heat with the battery for cooling. However, liquid cooling parts may also be blocked, deformed, and other faults during the heat exchange and cooling process of the battery, resulting in uneven flow distribution of the internal cooling medium, and ultimately causing large temperature differences in different areas of the power battery or energy storage battery.

[0003] When there is a large temperature difference between different parts of the battery, it is usually necessary to detect the branch flow distribution of the liquid-cooled finished product sample to find out the cause. The commonly used detection method is to drill holes in each branch of the liquid-cooled component, connect a flow meter, and detect the flow distribution of each branch to determine whether there is a blockage or deformation in the branch that causes a change in flow distribution. However, this detection method will damage the finished liquid-cooled component, and it is not convenient to connect the flow meter to count the flow of multi-channel and small-channel branches one by one. Summary of the invention

[0004] The present invention provides a method and a device for detecting the flow rate of a branch circuit of a liquid cooling component, which can detect the flow rate of cooling liquid in each branch circuit pipe of the liquid cooling component without damaging the liquid cooling component.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] An embodiment of the present invention provides a method for detecting a flow rate of a liquid cooling component branch, which includes:

[0007] Connect the coolant to the liquid inlet of the liquid cooling component and keep the total mass flow rate M of the coolant and the coolant temperature T stable;

[0008] Arrange multiple heat source devices to heat the coolant in each branch pipe of the liquid cooling component respectively;

[0009] Measure the coolant temperature T of each branch pipe of the liquid cooling unit i , the distance between the temperature measuring point of each branch pipe and the corresponding heat source device is the same;

[0010] Calculate the coolant temperature T and the coolant temperature T in each branch pipe i The difference ΔT i , and obtain the coolant mass flow M in each branch pipe i =P / (C·ΔT i );

[0011] Where, ΔTi =T i -T, unit is ℃; M i The unit is kg / s; P is the heating power of the constant power heat source device, the unit is W; C is the specific heat capacity of the coolant, the unit is (J / (kg·℃).

[0012] Optionally, calculate the coolant temperature T and the coolant temperature T in each branch pipe i The difference ΔT i , and obtain the coolant mass flow M in each branch pipe i The steps include:

[0013] To M i Correction is made to obtain a more accurate mass flow rate M′ of each branch pipe. i .

[0014] Optionally, the mass flow rate M′ i The calculation formula is:

[0015] M′ i =M·K i / (K1+K2+K3+…K i );

[0016] Where, M is the total coolant mass flow rate, in kg / s; the mass flow ratio of each branch pipe is K1:K2:K3…K i =M1:M2:M3…M i .

[0017] Optionally, in the step of arranging a plurality of heat source devices to heat the coolant in each branch pipe of the liquid cooling component respectively, the plurality of heat source devices are respectively disposed at the coolant inlet side of each branch pipe.

[0018] Optionally, the plurality of heat source devices are electric heating nets, and the sizes of the meshes of the electric heating nets are consistent.

[0019] An embodiment of the present invention further provides a detection device, which is used to implement the above detection method, and the detection device includes:

[0020] A liquid supply pump connected to a liquid inlet of the liquid cooling component;

[0021] A plurality of heat source devices, wherein the plurality of heat source devices are respectively connected to each branch pipe of the liquid cooling component;

[0022] Multiple temperature measuring elements are used to detect the coolant temperature in each branch pipe respectively.

[0023] Optionally, the detection device further includes a temperature data recorder, and the temperature data recorder is communicatively connected to the plurality of temperature measuring elements.

[0024] Optionally, the detection device further comprises a fixing bracket, and the fixing bracket is used to fix the liquid cooling component.

[0025] Optionally, the fixed bracket includes a frame body and a plurality of locks, the plurality of locks are arranged on the frame body, and the plurality of locks are used to lock the liquid cooling component.

[0026] Optionally, a flow regulating valve and a pressure gauge are provided at the liquid inlet of the liquid cooling component.

[0027] Beneficial effects of the embodiments of the present invention:

[0028] The method for detecting the flow rate of the branch of the liquid cooling component comprises: connecting the liquid inlet of the liquid cooling component to the coolant, and keeping the total mass flow rate M of the coolant and the temperature T of the coolant stable; arranging a plurality of heat source devices to heat the coolant in each branch pipe of the liquid cooling component respectively; measuring the coolant temperature T of each branch pipe of the liquid cooling component i , the distance between the temperature measuring point of each branch pipe and the corresponding heat source device is the same; calculate the coolant temperature T and the coolant temperature T in each branch pipe i The difference ΔT i , and obtain the coolant mass flow M in each branch pipe i The detection method is to pass coolant into each branch pipe of the liquid cooling component, heat the coolant respectively, and measure the temperature of the coolant on each branch pipe at the same time, and then use the temperature difference of the coolant in each branch pipe to obtain the coolant mass flow rate in the branch pipe. This detection method will not damage the liquid cooling component and is suitable for liquid cooling components with multi-channel and small-channel branches.

[0029] The detection device includes a liquid supply pump, multiple heat source devices and multiple temperature measuring elements. The liquid supply pump is connected to the liquid inlet of the liquid cooling component and is used to inject coolant into the liquid cooling component. The multiple heat source devices are respectively connected to each branch pipe of the liquid cooling component and are used to heat the coolant in each branch pipe. The multiple temperature measuring elements are used to respectively detect the coolant temperature in each branch pipe. The above-mentioned detection method can be implemented through the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a flow chart of a method for detecting a flow rate of a liquid cooling component branch provided in an embodiment of the present invention;

[0032] Figure 2A schematic diagram of detecting each branch pipe of a liquid cooling component using the detection method provided by an embodiment of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of a fixing bracket provided in an embodiment of the present invention.

[0034] Icons: 1-liquid cooling component; 10-branch pipe; 11-liquid inlet; 2-heat source device; 3-temperature measuring element; 4-liquid supply pump; 5-flow regulating valve; 6-pressure gauge; 7-fixed bracket; 70-frame; 701-vertical beam; 702-cross beam; 703-longitudinal beam; 704-card slot; 71-lock. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention 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.

[0039] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0040] The terms "comprises," "comprising," or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0041] Unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, "connected" 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, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] It should be noted that, for the aforementioned various method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, some steps can be performed in other orders or simultaneously. The steps in the method of the embodiment of the present application can be adjusted in order, combined, and deleted according to actual needs.

[0043] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0044] Power batteries or energy storage batteries use liquid cooling components to dissipate heat and cool down during use. When there is a large temperature difference between different areas of the battery, it is usually necessary to detect the coolant flow distribution of each branch pipe of the liquid cooling component to find out the specific cause.

[0045] At present, the commonly used detection method is to drill holes on each branch of the liquid cooling component, connect a flow meter, and detect the flow distribution of each branch to determine whether there is a blockage or deformation in the branch that causes a change in flow distribution. However, this detection method will damage the finished liquid cooling component, and it is not convenient to connect a flow meter to count the flow for multi-channel and small-channel branches one by one.

[0046] Based on the above problems, an embodiment of the present invention provides a method and a device for detecting the flow rate of a liquid cooling component branch circuit, which can solve the above problems. The detection device can be used to implement the detection method, which will be described in detail below.

[0047] Please refer to Figure 1 and Figure 2The method for detecting the flow rate of the liquid cooling component branch comprises the following steps:

[0048] Step 1: Connect the coolant to the liquid inlet 11 of the liquid cooling element 1, and keep the total mass flow rate M of the coolant and the coolant temperature T stable;

[0049] Step 2: Arrange multiple heat source devices 2 to heat the coolant in each branch pipe 10 of the liquid cooling component 1 respectively;

[0050] Step 3: Measure the coolant temperature T of each branch pipe 10 of the liquid cooling unit 1 i , the distance between the temperature measuring point of each branch pipe 10 and the corresponding heat source device 2 is the same;

[0051] Step 4: Calculate the coolant temperature T and the coolant temperature T in each branch pipe 10 i The difference ΔT i , and the coolant mass flow M in each branch pipe 10 is obtained i =P / (C·ΔT i );

[0052] Where, ΔT i =T i -T, unit is ℃; M i The unit is kg / s; P is the heating power of the constant power heat source device 2, the unit is W; C is the specific heat capacity of the coolant, the unit is (J / (kg·℃).

[0053] The detection method of the embodiment of the present invention adopts a method of passing coolant into each branch pipe 10 of the liquid cooling component 1, and at the same time measuring the temperature of the coolant on each branch pipe 10, measuring the temperature difference of the coolant in each branch pipe 10, and obtaining the mass flow rate of the coolant in each branch pipe 10, so as to judge the flow distribution of the coolant in each branch pipe 10 of the liquid cooling component 1, thereby inferring whether the branch pipe 10 is blocked or deformed. The detection method of the embodiment of the present invention adopts temperature measurement to calculate the mass flow rate of the coolant in each branch pipe 10, and will not damage the liquid cooling component 1. For the harmonica tube type liquid cooling component 1 with multiple channels and small channel branches, the currently used method of drilling holes on the branch pipe 10 and connecting a flow meter cannot be implemented. However, since the detection method of the embodiment of the present invention adopts temperature measurement and calculation to obtain the mass flow rate of the coolant in each branch pipe 10, each branch can be individually temperature-measured and calculated to obtain the mass flow rate of the coolant in each small channel branch.

[0054] Among them, step 1 and step 2 of the embodiment of the present invention can be carried out simultaneously during the specific implementation, the liquid inlet 11 of the liquid cooling component 1 is connected to the equipment for conveying the coolant, and the heat source device 2 is arranged on each branch pipe 10 of the liquid cooling component 1; or, step 2 is implemented before step 1, firstly, a plurality of heat source devices 2 are arranged on each branch pipe 10 of the liquid cooling component 1, and after the heat source devices 2 are arranged, the coolant is introduced, and then the heat source devices 2 are started to heat the coolant in each branch pipe 10.

[0055] The total mass flow rate M of the coolant and the coolant temperature T in step 1 remain stable, which means that after the coolant is started to be delivered to the liquid-cooled component 1 and continues for a period of time X, within any unit time after the X period of time, the mass of the coolant delivered from the liquid inlet 11 of the liquid-cooled component 1 to the liquid-cooled component 1 is the same, thereby ensuring that the coolant flow rate distributed to each branch pipe 10 will not change during the detection process, thereby avoiding affecting the accuracy of the detection result.

[0056] The coolant temperature T in step 1 remains stable means that after the coolant is delivered to the liquid cooling unit 1 for a period of time X, the coolant temperature delivered from the liquid inlet 11 of the liquid cooling unit 1 to the liquid cooling unit 1 is the same in any unit time after the X period of time, so as to avoid the accuracy of the test result being affected by the temperature difference of the coolant itself during the test. Of course, the coolant temperature T here refers to the low temperature of the coolant delivered to the liquid cooling unit 1, and the coolant has not yet been heated.

[0057] It can be understood that the cooling liquid described in the embodiment of the present invention may include liquid refrigerants such as water, ethylene glycol aqueous solution, etc. The specific refrigerant can be selected according to actual needs, and the embodiment of the present invention does not limit this.

[0058] In step 2, multiple heat source devices 2 are needed to heat the coolant in each branch pipe 10 of the liquid cooling unit 1. Since the adjacent branch pipes 10 of the liquid cooling unit 1 are arranged independently of each other, a heat source device 2 is set on each branch pipe 10. The number of heat source devices 2 corresponds to the number of branch pipes 10 on the liquid cooling unit 1. Each heat source device 2 works independently and does not affect each other. Of course, in order to facilitate detection and operation, multiple heat source devices 2 are set on each branch pipe 10 near the inlet side of the coolant.

[0059] It is worth mentioning that the liquid cooling component 1 of the embodiment of the present invention generally includes two headers and a plurality of branch pipes 10, and the two ends of the branch pipes 10 are respectively connected and communicated with the two headers, wherein the first header is provided with a liquid inlet 11, and the coolant is injected into the first header through the liquid inlet 11, and the coolant flows in the first header and flows into each branch pipe 10, and then flows into the second header from the other end of the branch pipe 10, and the second header is provided with a liquid outlet, and the coolant is discharged from the liquid outlet. Of course, the liquid inlet 11 and the liquid outlet of different forms of liquid cooling components 1 can be set at different positions of the header, and the liquid inlet 11 and the liquid outlet in the embodiment of the present invention are both located in the middle of the header.

[0060] In step 3, the temperature T of the heated coolant in each branch pipe 10 of the liquid cooling unit 1 is measured. i , the distances from the temperature measuring points of each branch pipe 10 to the corresponding heat source device 2 need to be the same, to avoid significant changes in the coolant temperature due to inconsistent distances, and to avoid increasing the difficulty of calculation. Of course, the temperature measuring points on each branch pipe 10 are as close as possible to the outlet side of the branch pipe 10, so that the temperature measuring points are at a greater distance from the heating points, and the heated coolant has a greater temperature drop when flowing in the branch pipe 10 at a longer distance; for example, the A branch pipe 10 in the liquid cooling component 1 is partially blocked or bent, resulting in a decrease in the coolant flow, but the A branch pipe 10 can still circulate the coolant. When the temperature measuring point on the A branch pipe 10 is close to the heating point, the measured coolant temperature is compared with other branch pipes 10 with a larger coolant flow. The temperature difference between the two is not large, which can easily lead to a large deviation between the final calculation result and the actual situation, and thus cause an erroneous judgment.

[0061] Of course, the temperature measuring point can be changed, that is, the distance between the temperature measuring point of each branch pipe 10 and the corresponding heat source device 2 can be changed. It is only necessary to synchronously move the temperature measuring points on each branch pipe 10 so that the distance between the temperature measuring points of each branch pipe 10 and the corresponding heat source device 2 is the same. By changing the temperature measuring points on each branch pipe 10 multiple times and comparing the temperature changes of the coolant, it is easy to determine whether a certain section of each branch pipe 10 is blocked or bent. When the coolant temperature in a certain section of a branch pipe 10 changes suddenly, the blockage or bend is more likely to be in this section.

[0062] In step 4, the initial low temperature T of the coolant and the coolant temperature T in each branch pipe 10 are i The difference is ΔT i , according to ΔT i The coolant mass flow M in each branch pipe 10 can be calculated. i .

[0063] The coolant mass flow M in each branch pipe 10 obtained by preliminary calculation i The sum of may not be equal to the total mass flow rate M of the coolant. In order to ensure a more accurate mass flow rate M′ of each branch pipe 10, i , so it is necessary to i Make corrections.

[0064] In the embodiment of the present invention, the mass flow rate M of each branch pipe 10 is i The correction calculation formula of ′ is as follows:

[0065] M′ i =M·K i / (K1+K2+K3+…K i );

[0066] Wherein, M is the mass flow rate of the total coolant, in kg / s; the mass flow rate ratio of each branch pipe 10 is K1:K2:K3…K i =M1:M2:M3…M i .

[0067] According to the calculated sum of the coolant mass flow of each branch pipe 10, the mass flow M′ of each branch pipe 10 is obtained by redistribution calculation. i .

[0068] It can be understood that the mass flow rate M of each branch pipe 10 is i The correction method may also include other forms, such as establishing a three-dimensional simulation model to input temperature measurement data for simulation correction, or using other calculation methods for correction, which is not limited in the embodiment of the present invention.

[0069] The detection method of the embodiment of the present invention uses temperature measurement and calculation to obtain the coolant mass flow rate of each branch pipe 10, which will not cause damage to the liquid cooling component 1. Temperature measurement and calculation can also be performed on each branch separately, thereby detecting the harmonica tube type liquid cooling component 1 which is not convenient for drilling detection.

[0070] An embodiment of the present invention further provides a detection device, which can implement the above detection method. The detection device includes: a liquid supply pump 4, a plurality of heat source devices 2 and a plurality of temperature measuring elements 3.

[0071] The liquid supply pump 4 is connected to the liquid inlet 11 of the liquid cooling unit 1, and is used to input cooling liquid into the liquid cooling unit 1 and each branch pipe 10 of the liquid cooling unit 1. The liquid supply pump 4 can be any pump such as a centrifugal pump, an axial flow pump, a volumetric pump, a vane pump, etc., or other hydraulic transmission devices can be selected. The specific selection can be selected according to needs, and the embodiment of the present invention does not limit this.

[0072] A plurality of heat source devices 2 are respectively connected to each branch pipe 10 of the liquid cooling component 1, and the heat source device 2 is used to heat the low-temperature coolant flowing through the branch pipe 10. The heat source device 2 can be arranged outside the branch pipe 10, or inside the branch pipe 10; for example, the heat source device 2 is an electric heating network, and the electric heating network is coated on the outer wall of the branch pipe 10. When the electric heating network is powered on, the electric heating network generates heat and transfers it to the coolant in the branch pipe 10 to heat the coolant. In order to heat the coolant evenly, the size of each mesh of the electric heating network is consistent. In other embodiments, the heat source device 2 can also be other forms of heating, such as electromagnetic heating, infrared heating, etc. The specific selection can be selected according to needs and is not limited to this.

[0073] It is worth mentioning that the heat source device 2 needs to maintain constant power during operation so that the heating of the coolant is continuous and stable.

[0074] The plurality of temperature measuring elements 3 are arranged in contact or non-contact with each branch pipe 10, and the plurality of temperature measuring elements 3 respectively detect the temperature T of the coolant in each branch pipe 10. i For example, the temperature measuring element 3 is a thermocouple, the hot end of the thermocouple is connected to the branch pipe 10, and the cold end of the thermocouple is connected to the liquid supply pump 4, so as to detect the temperature T of the coolant in the branch pipe 10. i Of course, a temperature sensor or other temperature measuring device can also be used to detect the temperature T of the coolant. i Thermocouple temperature measurement is an existing technology, and the temperature measurement principle of thermocouple is not described here.

[0075] Optionally, in order to quickly record and count the temperature data collected by multiple temperature measuring elements 3, the detection device also includes a temperature data recorder, which is in communication connection with multiple temperature measuring elements 3. The temperature data recorder summarizes the temperature data collected by all temperature measuring elements 3 to facilitate the staff to generate images or use calculations later. The temperature data recorder can be a temperature inspection instrument or other equipment, which is not limited in the embodiment of the present invention.

[0076] Optionally, a flow regulating valve 5 and a pressure gauge 6 are provided at the liquid inlet 11 of the liquid cooling component 1. The input pressure of the coolant at the liquid inlet 11 can be checked in real time through the pressure gauge 6. When the input pressure is too low or too high, the flow regulating valve 5 can be used to adjust the pressure of the coolant input into the liquid cooling component 1 to be within a more suitable range.

[0077] refer to Figure 3 The detection device also includes a fixing bracket 7, which is used to fix the liquid cooling component 1 to prevent the shaking of the liquid cooling component 1 from causing adverse effects on the detection results.

[0078] The fixing bracket 7 includes a frame body 70 and a plurality of lock buckles 71 . The plurality of lock buckles 71 are disposed on the frame body 70 and are used to lock the liquid cooling component 1 .

[0079] Specifically, the frame 70 is formed by connecting four vertical beams 701, two horizontal beams 702 and two longitudinal beams 703. The two horizontal beams 702 are provided with slots 704, and the liquid cooling element 1 is placed in the slots 704. The slots 704 are surrounded by lock buckles 71. When the liquid cooling element 1 is placed in the slots 704, it is locked on the liquid cooling element 1 by the lock buckles 71, thereby fixing the liquid cooling element 1 on the frame 70. The lock buckle 71 can be a conventional press-type lock buckle 71 on the market, which is used to press the liquid cooling element 1 on the frame 70.

[0080] The above detection method can be implemented by the detection device of the embodiment of the present invention.

[0081] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for detecting flow rate of a liquid cooling component branch, characterized in that: include: Connecting the liquid inlet (11) of the liquid cooling element (1) to the coolant, and keeping the total mass flow rate M of the coolant and the temperature T of the coolant stable; Arranging a plurality of heat source devices (2) to heat the cooling liquid in each branch pipe (10) of the liquid cooling component (1) respectively; Measure the coolant temperature T of each branch pipe (10) of the liquid cooling component (1) i , the distances between the temperature measuring points of each branch pipe (10) and the corresponding heat source device (2) are the same; Calculate the coolant temperature T and the coolant temperature T in each branch pipe (10) i The difference ΔT i , and the coolant mass flow rate M in each branch pipe (10) is obtained i =P / (C·ΔT i ); Where, ΔT i =T i -T, unit is ℃; M i The unit is kg / s; P is the heating power of the constant power heat source device (2), the unit is W; C is the specific heat capacity of the coolant, the unit is (J / (kg·℃).

2. The method for detecting the flow rate of a liquid cooling component branch according to claim 1, characterized in that: The calculated coolant temperature T and the coolant temperature T in each branch pipe (10) i The difference ΔT i , and the coolant mass flow rate M in each branch pipe (10) is obtained i The steps include: To M i Correction is performed to obtain a more accurate mass flow rate M′ of each branch pipe (10) i .

3. The method for detecting the flow rate of a liquid cooling component branch according to claim 2, characterized in that: The mass flow rate M' i The calculation formula is: M′ i =M·K i / (K1+K2+K3+…K i ); Wherein, M is the mass flow rate of the total coolant, in kg / s; the mass flow rate ratio of each branch pipe (10) is K1:K2:K3...K i =M1:M2:M3…M i .

4. The method for detecting the flow rate of a liquid cooling component branch according to claim 1, characterized in that: In the step of arranging a plurality of heat source devices (2) to heat the coolant in each branch pipe (10) of the liquid cooling component (1), the plurality of heat source devices (2) are respectively arranged on the coolant inlet side of each branch pipe (10).

5. The method for detecting the flow rate of a liquid cooling component branch according to claim 1, characterized in that: The plurality of heat source devices (2) are electric heating nets, and the sizes of the meshes of the electric heating nets are consistent.

6. A detection device, the detection device is used to implement the detection method according to any one of claims 1 to 5, characterized in that: The detection device comprises: A liquid supply pump (4), the liquid supply pump (4) being connected to a liquid inlet (11) of the liquid cooling element (1); A plurality of heat source devices (2), wherein the plurality of heat source devices (2) are respectively connected to each branch pipe (10) of the liquid cooling component (1); A plurality of temperature measuring elements (3), wherein the plurality of temperature measuring elements (3) are used to respectively detect the temperature of the coolant in each branch pipe (10).

7. The detection device according to claim 6, characterized in that: The detection device also includes a temperature data recorder, and the temperature data recorder is communicatively connected to the multiple temperature measuring elements (3).

8. The detection device according to claim 6, characterized in that: The detection device further comprises a fixing bracket (7), wherein the fixing bracket (7) is used to fix the liquid cooling component (1).

9. The detection device according to claim 8, characterized in that: The fixing bracket (7) comprises a frame body (70) and a plurality of lock buckles (71), wherein the plurality of lock buckles (71) are arranged on the frame body (70), and the plurality of lock buckles (71) are used to lock the liquid cooling component (1).

10. The detection device according to any one of claims 6 to 9, characterized in that: A flow regulating valve (5) and a pressure gauge (6) are provided at the liquid inlet (11) of the liquid cooling component (1).

Images