Integrated water-cooled battery module and automobile thereof

Abstract

The utility model relates to the technical field of automobile batteries, in particular to an integrated water-cooled battery module and an automobile with the same. Comprising a battery cell group which comprises a plurality of stacked battery cells; the side cold plate is arranged outside the battery cell group in a surrounding manner, and a side cold runner is arranged in the side cold plate; the bottom cooling plate is arranged at the bottom of the battery cell group along the height direction of the battery cell group; a bottom cooling runner is arranged in the bottom cooling plate, and the bottom cooling runner is communicated with the side cooling runner; the heat conduction pieces are arranged between every two adjacent battery cells, the side parts of the heat conduction pieces are attached to the side parts of the battery cells, and the end parts of the heat conduction pieces make contact with the side cold plates and are used for conducting heat of the battery cells to the side cold plates; the water inlet is formed in the side cold plate and / or the bottom cold plate and used for feeding a cooling medium to the side cold plate and / or the bottom cold plate; and the water outlet is formed in the side cold plate and / or the bottom cold plate and used for discharging the cooling medium in the side cold plate and / or the bottom cold plate.

Description

Technical Field

[0001] The present application relates to the field of automotive battery technology, and in particular to an integrated water-cooled battery module and a vehicle thereof. Background Art

[0002] When operating in different environments and under different operating conditions, battery temperatures fluctuate rapidly, requiring rapid cooling to maintain a reasonable temperature range. Existing water-cooling systems for battery packs often utilize whole-plate liquid cooling, while others employ harmonica tubes. Both systems only exchange heat at the bottom of the cell, resulting in a single heat conduction direction and insufficient heat dissipation. Alternatively, aluminum sheets connected to the water-cooling plate can be used for heat dissipation, but this can lead to uneven temperatures. Utility Model Content

[0003] Based on this, it is necessary to provide an integrated water-cooled battery module and a vehicle thereof with multi-sided heat conduction and uniform heat dissipation.

[0004] An integrated water-cooled battery module, comprising:

[0005] A battery cell group, comprising a plurality of battery cells stacked in a row;

[0006] A side cooling plate is arranged around the outside of the battery cell group, and a side cooling channel is provided in the side cooling plate;

[0007] A bottom cold plate is provided at the bottom of the battery cell group along the height direction of the battery cell group; a bottom cold runner is provided inside the bottom cold plate, and the bottom cold runner is connected to the side cold runner;

[0008] A heat conducting member is provided between two adjacent battery cells, with the side of the heat conducting member being in contact with the side of the battery cell, and the end of the heat conducting member being in contact with the side cold plate, for conducting the heat of the battery cell to the side cold plate;

[0009] A water inlet is provided on the side cold plate and / or the bottom cold plate, and is used to supply cooling medium to the side cold plate and / or the bottom cold plate;

[0010] The water outlet is provided on the side cold plate and / or the bottom cold plate and is used to discharge the cooling medium in the side cold plate and / or the bottom cold plate.

[0011] In one embodiment, the side cold plate includes a first side plate, a second side plate, a third side plate and a fourth side plate. The first side plate, the second side plate, the third side plate and the fourth side plate are sequentially connected end to end and arranged outside the battery cell group, and the side cooling channels therein are interconnected.

[0012] In one embodiment, a first joint is provided on the first side panel, and the first joint is connected to the side cold runner in the first side panel; a first interface is provided on the second side panel and the fourth side panel, and the first interface is connected to the side cold runner in the second side panel and the fourth side panel; the first interface is plugged into the first joint and is connected to each other.

[0013] In one embodiment, the third side panel is provided with a second joint, which is connected to the side cold runner in the third side panel; the second side panel and the fourth side panel are provided with a second interface, which is connected to the side cold runner in the second side panel and the fourth side panel; the second interface is plugged into the second joint and is connected to each other.

[0014] In one embodiment, the water inlet includes a first water inlet and a second water inlet, and the first water inlet and the second water inlet are connected through a water inlet pipe; the first water inlet is arranged on the first side plate and is connected to the side cooling channel in the first side plate; the second water inlet is arranged on the bottom cold plate and is connected to the bottom cooling channel in the bottom cold plate.

[0015] In one embodiment, the water outlet includes a first water outlet and a second water outlet, and the first water outlet and the second water outlet are connected through a water outlet pipe; the first water outlet is arranged on the first side plate and is connected to the side cooling channel in the first side plate; the second water outlet is arranged on the bottom cold plate and is connected to the bottom cooling channel in the bottom cold plate.

[0016] In one embodiment, a plug and a plug connector are provided on the first side panel, the first water inlet and the first water outlet are provided on the plug, and the water inlet pipe and the water outlet pipe are provided on the plug connector.

[0017] In one embodiment, a third joint is provided on the bottom cold plate, and the third joint is connected to the bottom cold flow channel in the bottom cold plate; a third interface is provided on the second side plate and the fourth side plate, and the third interface is connected to the side cold flow channel in the second side plate and the fourth side plate; the third interface is plugged into and matched with the third joint and is connected to each other.

[0018] In one embodiment, the heat conductive member includes a main body and bent sections provided at both ends of the main body, the main body is placed between two adjacent battery cells and abuts against the side walls of the battery cells; the bent sections are placed between the battery cells and the side cold plates and abut against the side edges of the battery cells and the side walls of the side cold plates, respectively.

[0019] The present application also provides a car comprising the integrated water-cooled battery module described in any one of the above embodiments.

[0020] Compared with the existing technology, the integrated water-cooled battery module effectively transfers heat to the five surfaces of the battery cell except the top surface and the interior of the battery cell by providing side cold plates surrounding the battery cell, bottom cold plates at the bottom of the battery cell and heat conductive parts between adjacent battery cells, and quickly cools down the battery cell through the medium in the side cooling channel and the bottom cooling channel, which not only achieves rapid cooling, but also ensures uniform heat dissipation of the battery cell temperature and achieves consistency of the internal temperature of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the conventional technology, the following briefly introduces the drawings required for use in the embodiments or the conventional technology descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 Schematic diagram of the integrated water-cooled battery module structure provided for this application.

[0023] Figure 2 Schematic diagram of the explosion of the integrated water-cooled battery module provided for this application.

[0024] Figure 3 Schematic diagram of the bottom cold plate of the integrated water-cooled battery module provided in this application.

[0025] Figure 4 Schematic diagram of the second cold plate of the integrated water-cooled battery module provided in this application.

[0026] Figure 5 Schematic diagram of the fourth side panel of the integrated water-cooled battery module provided in this application.

[0027] Figure numerals: 10, battery cell group; 11, battery cell; 20, side cold plate; 21, side cold runner; 211, first side plate; 212, second side plate; 213, third side plate; 214, fourth side plate; 201, first joint; 202, first interface; 203, second joint; 204, second interface; 30, bottom cold plate; 31, bottom cold runner; 301, third joint; 302, third interface; 40, heat conductor; 41, body; 42, bending section; 50, water inlet; 51, first water inlet; 52, second water inlet; 53, water inlet pipe; 60, water outlet; 61, first water outlet; 62, second water outlet; 63, water outlet pipe; 71, plug; 72, plug connector. DETAILED DESCRIPTION

[0028] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0029] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0031] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.

[0033] See also Figures 1 to 5The present application provides an integrated water-cooled battery module, including a cell group 10, a side cold plate 20, a bottom cold plate 30, a heat conductor 40, a water inlet 50 and a water outlet 60. The cell group 10 includes a plurality of stacked cells 11. The side cold plate 20 is arranged around the outside of the cell group 10, and a side cold runner 21 is provided inside the side cold plate 20. Along the height direction of the cell group 10, the bottom cold plate 30 is arranged at the bottom of the cell group 10. A bottom cold runner 31 is provided inside the bottom cold plate 30, and the bottom cold runner 31 is connected to the side cold runner 21. The heat conductor 40 is arranged between two adjacent cells 11, the side of the heat conductor 40 is in contact with the side of the cell 11, and the end of the heat conductor 40 is in contact with the side cold plate 20, for conducting the heat of the cell 11 to the side cold plate 20. The water inlet 50 is provided on the side cold plate 20 and / or the bottom cold plate 30 for supplying cooling medium to the side cold plate 20 and / or the bottom cold plate 30. The water outlet 60 is provided on the side cold plate 20 and / or the bottom cold plate 30 for discharging the cooling medium in the side cold plate 20 and / or the bottom cold plate 30.

[0034] It is understood that the water inlet 50 injects cooling medium into the side cold plates 20 and bottom cold plates 30, and the water outlet 60 discharges the cooling medium from the side cold plates 20 and bottom cold plates 30. Consequently, the medium in the side cold plates 20 and bottom cold plates 30 is circulating, capable of removing heat from the battery cells 11. The side cold plates 20 contact the four sides of the battery cell group 10, transferring the temperature of the four sides to the side cold plates 20. The bottom cold plate 30 contacts the bottom of the battery cell group 10, transferring the temperature of the bottom to the bottom cold plate 30. The heat conductor 40 conducts the temperature inside the battery cell group 10 to the side cold plates 20, where it is then removed by the circulating medium, achieving heat dissipation from the battery cell group 10. Consequently, effective heat transfer is achieved to the five sides of the battery cell 11 and the interior of the battery cell 11, rapidly cooling the temperature. The internal temperature of the battery cell 11 is not excessively high, ensuring uniform temperature and consistent internal temperature.

[0035] Furthermore, the side cooling plate 20 includes a first side plate 211, a second side plate 212, a third side plate 213, and a fourth side plate 214. Specifically, the first side plate 211, the second side plate 212, the third side plate 213, and the fourth side plate 214 are sequentially connected end-to-end and arranged around the cell assembly 10, with the side cooling channels 21 therein interconnected. Each side plate is attached to a corresponding side surface of the cell assembly 10, thereby improving heat transfer to the cell assembly 10.

[0036] In one embodiment, a first connector 201 is provided on the first side plate 211, and the first connector 201 is connected to the side cold runner 21 in the first side plate 211. A first interface 202 is provided on the second side plate 212 and the fourth side plate 214, respectively, and the first interface 202 is connected to the side cold runner 21 in the second side plate 212 and the fourth side plate 214. The first interface 202 is plugged into and connected to the first connector 201.

[0037] Exemplarily, two first connectors 201 are provided, and are respectively disposed on the first side panel 211 near the second side panel 212 and the fourth side panel 214. The positions of the first interfaces 202 on the second side panel 212 and the fourth side panel 214 correspond to the first connectors 201. When the first connector 201 is plugged into and mated with the first interface 202, the cold runners 21 inside the first side panel 211, the second side panel 212, and the fourth side panel 214 can be connected, while also enabling connections between the first side panel 211, the second side panel 212, and the fourth side panel 214. This reduces the number of connectors and simplifies the structure. Furthermore, there are no exposed connectors, diversion ducts, etc., resulting in a more aesthetically pleasing appearance.

[0038] Furthermore, the number of the first connectors 201 can be set to more than two, and the number of the first interfaces 202 can also be set to multiple, so that the connection between the first side plate 211, the second side plate 212, and the fourth side plate 214 is more secure.

[0039] In one embodiment, a second connector 203 is provided on the third side plate 213, and the second connector 203 is connected to the side cold runner 21 in the third side plate 213. A second interface 204 is provided on the second side plate 212 and the fourth side plate 214, and the second interface 204 is connected to the side cold runner 21 in the second side plate 212 and the fourth side plate 214. The second interface 204 and the second connector 203 are pluggable and interconnected.

[0040] Exemplarily, two second connectors 203 are provided, one located on the third side panel 213 near the second side panel 212 and the other located near the fourth side panel 214. The second interfaces 204 provided on the second and fourth side panels 212 and 214 correspond to the second connectors 203. When the second connectors 203 are plugged into and mated with the second interfaces 204, the cold runners 21 within the third, second, and fourth side panels 213, 212, and 214 are connected, while also connecting the third, second, and fourth side panels 213, 212, and 214. This reduces the number of connectors and simplifies the structure. Furthermore, there are no exposed connectors or flow conduits, resulting in a more aesthetically pleasing appearance.

[0041] Furthermore, the number of the second connectors 203 can be set to more than two, and the number of the second interfaces 204 can also be set to multiple, so that the connection between the third side plate 213, the second side plate 212, and the fourth side plate 214 is more secure.

[0042] In this embodiment, the water inlets 50 are provided on the side cold plates 20 and the bottom cold plates 30 for supplying cooling medium to the side cold plates 20 and the bottom cold plates 30 .

[0043] Specifically, the water inlet 50 includes a first water inlet 51 and a second water inlet 52, which are connected by a water inlet pipe 53. The first water inlet 51 is located on the side of the first side plate 211 away from the battery cell group 10 and is connected to the side cooling channel 21 in the first side plate 211. The second water inlet 52 is located on the bottom cold plate 30, away from the battery cell group 10 and the side cold plate 20, and is connected to the bottom cooling channel 31 in the bottom cold plate 30.

[0044] It is understandable that the first water inlet 51 and the second water inlet 52 inject the medium into the side cold plate 20 and the bottom cold plate 30 respectively. Compared with the method of using only one water inlet 50 for input, the medium circulates faster and the heat dissipation effect is better.

[0045] In this embodiment, the water outlets 60 are provided on the side cold plates 20 and the bottom cold plates 30 for discharging the cooling medium in the side cold plates 20 and the bottom cold plates 30 .

[0046] Specifically, the water outlet 60 includes a first water outlet 61 and a second water outlet 62, which are connected by a water outlet pipe 63. The first water outlet 61 is located on the side of the first side plate 211 away from the battery cell group 10 and is connected to the side cooling channel 21 in the first side plate 211. The second water outlet 62 is located on the bottom cold plate 30, away from the battery cell group 10 and the side cold plate 20, and is connected to the bottom cooling channel 31 in the bottom cold plate 30.

[0047] It is understandable that the first water outlet 61 and the second water outlet 62 discharge the medium in the side cold plate 20 and the bottom cold plate 30 respectively. Compared with the method of using only one water outlet 60 for input, the medium circulation speed is faster and the heat dissipation effect is better.

[0048] Furthermore, a plug 71 and a plug connector 72 are provided on the first side panel 211. The first water inlet 51 and the first water outlet 61 are provided on the plug 71, and the water inlet pipe 53 and the water outlet pipe 63 are provided on the plug connector 72. When the plug connector 72 is sleeved onto the plug 71, the water inlet pipe 53 and the water outlet pipe 63 are connected to the first water inlet 51 and the first water outlet 61, respectively.

[0049] It is understandable that the first water inlet 51 and the first water outlet 61 are arranged together, which is more compact in structure. Through the detachable connection of the plug 71 and the plug connector 72, the water inlet pipe 53 and the water outlet pipe 63 can be disassembled for easy maintenance and transportation.

[0050] Furthermore, a third joint 301 is provided on the bottom cold plate 30, which communicates with the bottom cold runner 31 within the bottom cold plate 30. A third interface 302 is provided on the second side plate 212 and the fourth side plate 214, which communicates with the side cold runner 21 within the second side plate 212 and the fourth side plate 214. The position of the third interface 302 corresponds to the third joint 301, and the third interface 302 and the third joint 301 are pluggable and interconnected.

[0051] It can be understood that the third interface 302 and the third connector 301 are connected to each other, so that the medium between the side cold plate 20 and the bottom cold plate 30 can flow through each other, and the temperature of the medium is more consistent, thereby achieving uniform heat dissipation of the battery cell group 10.

[0052] In one embodiment, the thermal conductor 40 includes a main body 41 and bent sections 42 disposed at both ends of the main body 41. The main body 41 is positioned between two adjacent battery cells 11 and abuts against the side walls of the battery cells 11. The bent sections 42 are positioned between the battery cells 11 and the side cold plates 20 and abut against the sides of the battery cells 11 and the side cold plates 20, respectively.

[0053] It is understood that the temperature inside the battery pack 10 is transferred to the body 41, and the temperature of the body 41 is transferred to the side cold plate 20 through the bent section 42. The provision of the bent section 42 increases the contact area between the heat conductor 40 and the side cold plate 20, thereby improving the heat exchange efficiency.

[0054] Illustratively, the heat conducting member 40 is made of heat conducting silicone rubber, and the bending section 42 and the main body 41 are an integral structure.

[0055] The present application also provides a car comprising the integrated water-cooled battery module according to any one of the above embodiments.

[0056] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of patent protection for the present application shall be determined by the appended claims.

Claims

1. An integrated water-cooled battery module, characterized in that: include: A battery cell group (10) comprising a plurality of battery cells (11) arranged in a stacked arrangement; A side cooling plate (20) is arranged around the outside of the battery cell group (10), and a side cooling channel (21) is provided in the side cooling plate (20); A bottom cold plate (30) is provided at the bottom of the battery cell group (10) along the height direction of the battery cell group (10); a bottom cold runner (31) is provided inside the bottom cold plate (30), and the bottom cold runner (31) is connected to the side cold runner (21); A heat conducting member (40) is provided between two adjacent battery cells (11), with the side of the heat conducting member (40) being in contact with the side of the battery cell (11), and the end of the heat conducting member (40) being in contact with the side cold plate (20), for conducting heat from the battery cell (11) to the side cold plate (20); A water inlet (50) is provided on the side cooling plate (20) and / or the bottom cooling plate (30) and is used to supply a cooling medium to the side cooling plate (20) and / or the bottom cooling plate (30); The water outlet (60) is provided on the side cooling plate (20) and / or the bottom cooling plate (30) and is used to discharge the cooling medium in the side cooling plate (20) and / or the bottom cooling plate (30).

2. The integrated water-cooled battery module according to claim 1, characterized in that: The side cooling plate (20) comprises a first side plate (211), a second side plate (212), a third side plate (213) and a fourth side plate (214); the first side plate (211), the second side plate (212), the third side plate (213) and the fourth side plate (214) are sequentially connected end to end and arranged outside the battery cell group (10), and the side cooling channels (21) therein are connected to each other.

3. The integrated water-cooled battery module according to claim 2, characterized in that: The first side plate (211) is provided with a first connector (201), and the first connector (201) is connected to the side cold runner (21) in the first side plate (211); the second side plate (212) and the fourth side plate (214) are provided with a first interface (202), and the first interface (202) is connected to the side cold runner (21) in the second side plate (212) and the fourth side plate (214); the first interface (202) and the first connector (201) are plug-fitted and connected to each other.

4. The integrated water-cooled battery module according to claim 3, characterized in that: The third side plate (213) is provided with a second connector (203), and the second connector (203) is communicated with the side cold runner (21) in the third side plate (213); the second side plate (212) and the fourth side plate (214) are provided with a second interface (204), and the second interface (204) is communicated with the side cold runner (21) in the second side plate (212) and the fourth side plate (214); the second interface (204) and the second connector (203) are plug-fitted and communicated with each other.

5. The integrated water-cooled battery module according to claim 2, characterized in that: The water inlet (50) comprises a first water inlet (51) and a second water inlet (52), and the first water inlet (51) and the second water inlet (52) are connected through a water inlet pipe (53); the first water inlet (51) is provided on the first side plate (211) and is connected to the side cooling channel (21) in the first side plate (211); the second water inlet (52) is provided on the bottom cooling plate (30) and is connected to the bottom cooling channel (31) in the bottom cooling plate (30).

6. The integrated water-cooled battery module according to claim 5, characterized in that: The water outlet (60) comprises a first water outlet (61) and a second water outlet (62), and the first water outlet (61) and the second water outlet (62) are connected through a water outlet pipe (63); the first water outlet (61) is provided on the first side plate (211) and is connected to the side cooling channel (21) in the first side plate (211); the second water outlet (62) is provided on the bottom cooling plate (30) and is connected to the bottom cooling channel (31) in the bottom cooling plate (30).

7. The integrated water-cooled battery module according to claim 6, characterized in that: The first side plate (211) is provided with a plug (71) and a plug connector (72); the first water inlet (51) and the first water outlet (61) are provided on the plug (71); and the water inlet pipe (53) and the water outlet pipe (63) are provided on the plug connector (72).

8. The integrated water-cooled battery module according to claim 2, characterized in that: The bottom cold plate (30) is provided with a third joint (301), and the third joint (301) is connected to the bottom cold flow channel (31) in the bottom cold plate (30); the second side plate (212) and the fourth side plate (214) are provided with a third interface (302), and the third interface (302) is connected to the side cold flow channel (21) in the second side plate (212) and the fourth side plate (214); the third interface (302) and the third joint (301) are plug-fitted and connected to each other.

9. The integrated water-cooled battery module according to claim 1, characterized in that: The heat conducting member (40) comprises a main body (41) and bent sections (42) provided at both ends of the main body (41); the main body (41) is placed between two adjacent battery cells (11) and abuts against the side walls of the battery cells (11); the bent sections (42) are placed between the battery cells (11) and the side cold plates (20), and respectively abut against the side edges of the battery cells (11) and the side walls of the side cold plates (20).

10. An automobile, characterized in that: An integrated water-cooled battery module comprising any one of claims 1-9.

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