Battery cell water-cooling heat dissipation tool

Abstract

The utility model discloses a battery cell water-cooling heat dissipation tool which comprises a detection module, a first cold plate and a second cold plate, the first cold plate and the second cold plate are stacked side by side, the first cold plate and the second cold plate are both internally provided with flow channels used for circulation of cooling liquid, and water inlets and water outlets of the flow channels are both communicated with a circulating pump; a detection hole is formed in the second cold plate, the detection module is positioned and assembled on the outer side of the second cold plate, and the detection end of the detection module penetrates through the detection hole to be in contact with a battery cell clamped between the first cold plate and the second cold plate.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the electric core test technical field, concretely relates to a kind of electric core water-cooling heat dissipation tool. BACKGROUND

[0002] With the importance of the service life of automobile square battery to people, the test of the service life of automobile square battery by each vehicle enterprise is also more and more valued, and it becomes the key of test to obtain the data of the service life of square battery more accurately and reliably, so that the advantages and disadvantages of test tool directly determine the reliability of test data.

[0003] The current test tool for automobile square battery cycle generally uses two pieces of 20-30mm thick square steel plate with four corner holes and stainless steel guide column, and connecting screw, and the length and height of the steel plate are slightly greater than the test electric core; the steel plate clamps the electric core, the guide column is connected with the screw through the four corner space, and the scene of the electric core assembled in the vehicle is simulated by applying different torsion to the screw to ensure that the test is more practical; the test tool is suitable for testing electric core with small test current, and once the charge-discharge rate of test current increases, the heat in test increases rapidly, and the electric core can only be passively cooled, so that the temperature cannot be quickly reduced to the test environment temperature, and the reliability of test result cannot be ensured. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of electric core water-cooling heat dissipation tool, which can test the reliability of single electric core, and make the test of single electric core more consistent with the use scene of battery pack thermal management and liquid cooling on the whole vehicle.

[0005] The utility model solves the technical problem by adopting the technical scheme of providing a kind of electric core water-cooling heat dissipation tool, which includes detection module, first cold plate and second cold plate arranged and stacked, the first cold plate and the second cold plate are both internally provided with flow channel for circulating cooling liquid, the water inlet and the water outlet of the flow channel are both communicated with circulating pump; the second cold plate is provided with detection hole, the detection module is positioned and assembled on the outer side of the second cold plate, and the detection end of the detection module passes through the detection hole and contacts with the electric core clamped between the first cold plate and the second cold plate.

[0006] Further, it further includes guide column, the four corners of the first cold plate and the second cold plate are provided with positioning hole, and four guide columns are respectively inserted into four positioning holes at four corners, so that the first cold plate and the second cold plate slide along the direction of the guide column.

[0007] Further, the guide column on the outer side of the first cold plate is provided with fastener, and the guide column on the outer side of the second cold plate is provided with buckle ring for stopping the sliding of the second cold plate, the position of the fastener on the guide column is adjusted, so that the first cold plate and the second cold plate clamp the electric core.

[0008] Further, the substrate is fixed to the lower side of the second cold plate, and the detection module is positioned and installed on the substrate, and the detection end of the detection module faces the second cold plate.

[0009] Further, the water inlet of the flow channel in the first cold plate and the water inlet of the flow channel in the second cold plate are located on the same side, the water inlets of the first cold plate and the second cold plate are communicated through a three-way pipe, and the three-way pipe is communicated with the outlet port of the circulating pump.

[0010] Further, the water outlet of the flow channel in the first cold plate and the water outlet of the flow channel in the second cold plate are located on the same side, the water inlets of the first cold plate and the second cold plate are communicated through a three-way pipe, and the three-way pipe is communicated with the outlet port of the circulating pump.

[0011] Further, the flow channel of the first cold plate comprises a first branch channel, a second branch channel and a third branch channel which are arranged side by side along the length direction of the first cold plate, the second branch channel is located in the middle of the first branch channel and the third branch channel, and the parallel width of the first branch channel, the second branch channel and the third branch channel is at least consistent with the width of the battery cell.

[0012] Further, the first cold plate further comprises a first channel and a second channel which are arranged along the width direction of the first cold plate, the first channel is located at the right end of the first cold plate, the first channel penetrates the first branch channel, the second branch channel and the third branch channel from the outside of the first cold plate in sequence, so that the first branch channel, the second branch channel and the third branch channel are sequentially communicated, and the second channel is located at the left end of the first cold plate, the second channel penetrates the third branch channel and the second branch channel from the outside of the first cold plate in sequence, so that the third branch channel and the second branch channel are sequentially communicated.

[0013] Further, the left port of the first branch channel is the water inlet of the flow channel, the left port of the third branch channel is the water outlet, and the right ports of the first branch channel, the second branch channel and the third branch channel and the left port of the second branch channel are all blocked.

[0014] Further, the flow channel of the second cold plate comprises a first branch channel, a second branch channel and a third branch channel which are arranged side by side along the length direction of the second cold plate, the second branch channel is located in the middle of the first branch channel and the third branch channel, and the parallel width of the first branch channel, the second branch channel and the third branch channel is at least consistent with the width of the battery cell.

[0015] Further, the detection module comprises a pressure sensor.

[0016] The utility model discloses the beneficial effect is:

[0017] The utility model provides a kind of battery water cooling heat sink tool, using hollow cold plate structure to the battery being clamped is cooled, test installation operation and initial change is less, more close to real working environment, easy to install. When using the tool of the application to test, the heat dissipation effect is better than traditional tool, can effectively reduce the influence of battery self temperature rise on test, ensure the stability of test environment. More simple implementation monitoring the related parameters of battery, such as the change of expansion pressure.

[0018] The cooling liquid can be driven by the water cooling machine / circulating pump to flow in the internal flow channel of the cold plate, thereby removing the heat generated by the battery in real time; the water cooling machine can also cool the cooling liquid that absorbs heat, thereby always ensuring that the temperature of the circulating cooling liquid is room temperature.

[0019] Different sizes of batteries can be adapted by only changing the size of the water cooling plate or the position of the cold plate on the guide column; at the same time, the tool has low processing difficulty and low cost, and is easy to mass-produce. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate embodiments of the present utility model and, together with the description, serve to explain the principles of the present utility model. In these drawings, similar reference numerals are used to represent similar elements. The drawings in the following description are some embodiments of the present utility model, rather than all embodiments. For ordinary skilled persons in the art, other drawings can be obtained from these drawings without creative labor.

[0021] Figure 1 It is a structure diagram of a battery water cooling heat sink tool of the embodiments of the present utility model;

[0022] Figure 2 It is a rear view of the second cold plate;

[0023] Figure 3 It is an internal structure diagram of the first cold plate;

[0024] Figure 4 It is a schematic diagram of the tee.

[0025] In the figure: 1, first cold plate; 2, second cold plate; 3, base plate; 4, battery; 5, guide column; 6, detection module; 7, detection hole; 8, positioning hole; 9, tee; 11, first branch; 12, second branch; 13, third branch; 14, first channel; 15, second channel; 91, first port; 92, second port; 93, third port. DETAILED DESCRIPTION

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application and the prior art, specific implementation manners of the present application will be described below with reference to the drawings. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without any creative labor, and other embodiments can also be obtained. In addition, the design direction is only to represent the relative position relationship between the components, not the absolute position relationship.

[0027] The embodiment of the present application provides a battery cell water-cooling heat dissipation tool, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , mainly comprising a detection module 6, a first cold plate 1 and a second cold plate 2 arranged and stacked, the first cold plate 1 and the second cold plate 2 are both internally provided with flow channels for circulating cooling liquid, the water inlet and the water outlet of the flow channel are both communicated with a circulating pump; the second cold plate 2 is provided with a detection hole 7, the detection module 6 is positioned and assembled on the outer side of the second cold plate 2, and the detection end of the detection module 6 passes through the detection hole 7 and contacts the battery cell 4 clamped between the first cold plate 1 and the second cold plate 2.

[0028] In the present application, the battery cell 4 is clamped by the first cold plate 1 and the second cold plate 2 to simulate the working condition of the battery cell assembled in the vehicle, and at the same time, the spacing between the two cold plates can be adjusted to ensure that the test is more practical.

[0029] In a specific embodiment, guide columns 5 can be provided at the four corners of the two cold plates, and the spacing between the two cold plates can be adjusted by means of nuts, buckle rings and other structures, so that the clamping force of the cold plate on the battery cell 4 is adjustable.

[0030] For example, positioning holes 8 can be provided at the four corners of the first cold plate 1 and the second cold plate 2, and four guide columns 5 are respectively inserted into the four positioning holes 8 at the four corners, so that the first cold plate 1 and the second cold plate 2 slide along the guide columns 5. In specific implementation, the position of one cold plate can be fixed on the guide column 5, and only the sliding position of the other cold plate on the guide column 5 needs to be adjusted; of course, both cold plates can also be adjusted.

[0031] Specifically, the guide column 5 located on the outer side of the first cold plate 1 is provided with a fastener, which can be a nut, a tight clamping buckle or the like; when a nut is used, a thread can be provided on the guide column 5 to cooperate with the nut; the guide column 5 located on the outer side of the second cold plate 2 is provided with a buckle ring for stopping the second cold plate 2 from sliding, and a ring groove can be provided on the guide column 5 to accommodate the buckle ring to stop the second cold plate 2 from sliding downward; the battery cell 4 is placed between the two cold plates, and then the position of the fastener on the guide column 5 is adjusted to make the first cold plate 1 slide downward to the position of the second cold plate 2, so that the first cold plate 1 and the second cold plate 2 clamp the battery cell 4, and the clamping force can be adjusted according to the actual situation.

[0032] In the embodiment of the present application, the detection module 6 can be a pressure sensor for detecting the expansion parameter of the battery cell 4. The detection module 6 can be positioned and installed relative to the second cold plate 2, so that the relative position of the detection module 6 and the second cold plate 2 is fixed. The first cold plate 1 actively applies pressure to the battery cell 4, and the second cold plate 2 is a bearing plate, so that the initial state parameter of the pressure sensor remains stable and is only affected by the expansion of the battery cell 4 itself. The detected data can effectively feedback the expansion parameter of the battery cell 4.

[0033] In a specific embodiment, a base plate 3 can be additionally provided on the lower side of the second cold plate 2, and the relative distance between the second cold plate 2 and the base plate 3 is fixed. The detection module 6 is carried on the base plate 3, and the detection end of the detection module 6 faces the second cold plate 2 and passes through the detection hole 7 to directly contact the battery cell 4.

[0034] Specifically, the four corners of the base plate 3 are fixed with the four guide columns 5 respectively, so that the base plate 3 is fixedly arranged on the lower side of the second cold plate 2. The detection module 6 is positioned and installed on the base plate 3, and the detection end of the detection module 6 faces the second cold plate 2.

[0035] In specific implementation, the detection hole 7 can be provided in the middle of the second cold plate 2. The protruding cylindrical body of the pressure sensor is assembled in alignment with the detection hole 7, and the detection end slightly protrudes to the inner side of the second cold plate 2.

[0036] In the embodiment of the present application, the water inlet and the water outlet of the two cold plates can be integrated on the same side end. The water inlet is communicated to the outlet port of the circulating pump, and the water outlet is communicated to the inlet port of the circulating pump.

[0037] For example, the water inlets of the flow channels built in the first cold plate 1 and the second cold plate 2 are located on the same side. The water inlets of the first cold plate 1 and the second cold plate 2 are communicated through a three-way pipe 9, and are communicated with the outlet port of the circulating pump through the three-way pipe 9.

[0038] For example, the water inlets of the flow channels built in the first cold plate 1 and the second cold plate 2 are located on the same side. The water inlets of the first cold plate 1 and the second cold plate 2 are communicated through a three-way pipe 9, and are communicated with the outlet port of the circulating pump through the three-way pipe 9.

[0039] In specific implementation, the three-way pipe 9 can include two water inlet ports and one water outlet port, as shown in Figure 4 The first port 91 is communicated with the water inlet of the first cold plate 1 through a hose, the second port 92 is communicated with the water inlet of the second cold plate 2 through a hose, and the third port 93 is communicated with the outlet port of the circulating pump through a hose. The water outlet of the cold plate is the same.

[0040] In the embodiments of the present application, the flow channel built in the first cold plate 1 can be opened based on the plate structure, such as a plate structure with a hollow structure, so that the cooling liquid flows therein; or a row-shaped channel can be opened, so that the cooling liquid flows unidirectionally therein; as long as the circulation of the cooling liquid can be achieved.

[0041] In a preferred embodiment, taking the flow channel of the first cold plate 1 as an example, the flow channel of the first cold plate 1 includes a first branch channel 11, a second branch channel 12 and a third branch channel 13 which are opened in parallel along the length direction of the first cold plate 1, the second branch channel 12 is located in the middle of the first branch channel 11 and the third branch channel 13, and the parallel width of the first branch channel 11, the second branch channel 12 and the third branch channel 13 is at least consistent with the width of the battery cell 4, so that the battery cell 4 is as far as possible in the effective heat dissipation range.

[0042] The communication between the three branch channels can be realized by opening a channel in the width direction, specifically, it further includes a first channel 14 and a second channel 15 which are opened along the width direction of the first cold plate 1, the first channel 14 is located at the right end of the first cold plate 1, the first channel 14 penetrates the first branch channel 11, the second branch channel 12 and the third branch channel 13 from the outside of the first cold plate 1 in sequence, so that the first branch channel 11, the second branch channel 12 and the third branch channel 13 are sequentially communicated; the second channel 15 is located at the left end of the first cold plate 1, the second channel 15 penetrates the third branch channel 13 and the second branch channel 12 from the outside of the first cold plate 1 in sequence, so that the third branch channel 13 and the second branch channel 12 are sequentially communicated, as shown in Figure 4 .

[0043] The left port of the first branch channel 11 is the water inlet of the flow channel, the left port of the third branch channel 13 is the water outlet, and the right ports of the first branch channel 11, the second branch channel 12 and the third branch channel 13 and the left port of the second branch channel 12 are all plugged, so as to finally form the built-in flow channel of the first cold plate 1, the flow direction of the cooling liquid therein can be referred to the arrow shown in Figure 4 .

[0044] It can be understood that when the plate structure is processed, the three branch channels can all be through type, and the two channels are opened to a fixed depth according to the communication relationship to realize the communication of the three branch channels, and finally the exposed ports of the two channels are plugged.

[0045] The flow channel in the second cold plate 2 can be opened in a manner basically consistent with the first cold plate 1, and can include the first branch channel 11, the second branch channel 12 and the third branch channel 13 opened in parallel along the length direction of the second cold plate 2, the second branch channel 12 being located in the middle of the first branch channel 11 and the third branch channel 13, the parallel width of the first branch channel 11, the second branch channel 12 and the third branch channel 13 being at least consistent with the width of the battery cell 4, and the communication manner among the three branch channels being consistent with the first cold plate 1,

[0046] However, in order to ensure the smooth opening of the detection hole 7, the opening position of the detection hole 7 is outside the first branch channel 11, the second branch channel 12 and the third branch channel 13; or the second branch channel 12 is abandoned, and the detection hole 7 is opened at the position where the original second branch channel 12 is located. This way can reduce the heat dissipation effect of the second cold plate 2, but it should be clear that when the battery cell 4 is assembled in the vehicle, the battery pack is often at the bottom of the vehicle, directly contacting the air on one side, and contacting the vehicle body structure on the other side. The heat dissipation effect of the upper side and the heat dissipation effect of the lower side may be different. This way of reducing the heat dissipation effect of the second cold plate 2 may be more close to the real working environment.

[0047] With the water cooling tool of the present application, when the 5C charging and discharging test is performed at 25℃ room temperature, the battery cell using the water cooling tool has a faster cooling speed, and the battery cell temperature can be reduced to room temperature in about 1800S, while the traditional tool needs about 4000S. In terms of battery cell temperature rise, the internal temperature rise of the battery cell of the traditional tool reaches about 30℃, and the external temperature rise reaches about 25℃. The internal temperature rise of the battery cell of the water cooling tool reaches about 23℃, and the external temperature rise is about 15℃, which is about 10℃ lower than that of the traditional tool. The heat dissipation effect is much better than that of the traditional tool, which can effectively reduce the influence of the temperature rise of the battery cell itself on the test and ensure the stability of the test environment.

[0048] The material of the cold plate can be an aluminum plate, and the flow channel can be formed by opening branch channels, passages or hollow structures in the aluminum plate. The thickness of the cold plate can be 20mm, and round holes are punched around the cold plate. The round holes penetrate the cold plate in the thickness direction, and the distance between the edges of the two round holes near the top side is greater than the length of the test battery.

[0049] As a preferred embodiment, a flow meter can be mounted on the water inlet.

[0050] It is to be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0051] The above further describes the present application in detail in connection with specific preferred embodiments. It is to be noted that the specific embodiments of the present application are not limited to these descriptions. For those skilled in the art of the present application, some simple deductions or substitutions can be made without departing from the concept of the present application, and all of them shall be considered as falling within the protection scope of the present application.

Claims

1. An electric cell water-cooling heat dissipation tool, characterized in that, The application relates to a battery detection device, which comprises a detection module (6), a first cold plate (1) and a second cold plate (2) arranged in parallel, the first cold plate (1) and the second cold plate (2) are internally provided with flow channels for circulating cooling liquid, the water inlets and outlets of the flow channels are communicated with a circulating pump, the second cold plate (2) is provided with a detection hole (7), the detection module (6) is positioned and assembled on the outer side of the second cold plate (2), and the detection end of the detection module (6) penetrates through the detection hole (7) and contacts an electric core (4) clamped between the first cold plate (1) and the second cold plate (2).

2. The water-cooling heat dissipation tool for battery cell according to claim 1, characterized in that, Further, four guide columns (5) are arranged, four positioning holes (8) are arranged at the four corners of the first cold plate (1) and the second cold plate (2), and four guide columns (5) penetrate into the four positioning holes (8) at the four corners, so that the first cold plate (1) and the second cold plate (2) slide along the guide columns (5).

3. The water-cooling heat dissipation tool for battery cell according to claim 2, characterized in that, A fastener is arranged on the guide column (5) located on the outer side of the first cold plate (1), a buckle ring for stopping the sliding of the second cold plate (2) is arranged on the guide column (5) located on the outer side of the second cold plate (2), the position of the fastener on the guide column (5) is adjusted, the first cold plate (1) and the second cold plate (2) clamp the electric core (4).

4. The water-cooling heat dissipation tool for battery cell according to claim 3, characterized in that, Further, a base plate (3) is arranged, the four corners of the base plate (3) are fixed with the four guide columns (5) respectively, the base plate (3) is fixedly arranged on the lower side of the second cold plate (2), the detection module (6) is positioned and mounted on the base plate (3), and the detection end of the detection module (6) faces the second cold plate (2).

5. The water-cooling heat dissipation tool for battery cell according to claim 1, characterized in that, The water inlets of the flow channels arranged in the first cold plate (1) and the second cold plate (2) are located on the same side, the water inlets of the first cold plate (1) and the second cold plate (2) are communicated through a three-way pipe (9), and the water inlets of the first cold plate (1) and the second cold plate (2) are communicated with the water outlet port of the circulating pump through the three-way pipe (9).

6. The water-cooling heat dissipation tool for battery cell according to claim 1, characterized in that, The water inlets of the flow channels arranged in the first cold plate (1) and the second cold plate (2) are located on the same side, the water inlets of the first cold plate (1) and the second cold plate (2) are communicated through a three-way pipe (9), and the water inlets of the first cold plate (1) and the second cold plate (2) are communicated with the water outlet port of the circulating pump through the three-way pipe (9).

7. The water-cooling heat dissipation tool for battery cell according to claim 1, characterized in that, The flow channel of the first cold plate (1) comprises a first branch channel (11), a second branch channel (12) and a third branch channel (13) arranged in parallel along the length direction of the first cold plate (1), the second branch channel (12) is located in the middle of the first branch channel (11) and the third branch channel (13), and the parallel width of the first branch channel (11), the second branch channel (12) and the third branch channel (13) is at least consistent with the width of the electric core (4).

8. The water-cooling heat dissipation tool for battery cell according to claim 7, characterized in that, Further comprising a first channel (14) and a second channel (15) opened along the width direction of the first cold plate (1), the first channel (14) is located at the right end of the first cold plate (1), the first channel (14) penetrates the first branch (11), the second branch (12) and the third branch (13) from the outside of the first cold plate (1) in sequence, so that the first branch (11), the second branch (12) and the third branch (13) are communicated in sequence; the second channel (15) is located at the left end of the first cold plate (1), the second channel (15) penetrates the third branch (13) and the second branch (12) from the outside of the first cold plate (1) in sequence, so that the third branch (13) and the second branch (12) are communicated in sequence.

9. The water-cooling heat dissipation tool for battery cell according to claim 8, characterized in that, The left port of the first branch (11) is the water inlet of the flow channel, the left port of the third branch (13) is the water outlet, and the right ports of the first branch (11), the second branch (12) and the third branch (13) and the left port of the second branch (12) are blocked.

10. The water-cooling heat dissipation tool for battery cell according to claim 1, characterized in that, The flow channel of the second cold plate (2) comprises a first branch (11), a second branch (12) and a third branch (13) opened in parallel along the length direction of the second cold plate (2), the second branch (12) is located in the middle of the first branch (11) and the third branch (13), the parallel width of the first branch (11), the second branch (12) and the third branch (13) is at least consistent with the width of the battery cell (4), and the detection hole (7) is located outside the first branch (11), the second branch (12) and the third branch (13).

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