Water cooling plate and battery pack

Abstract

The utility model discloses a water cooling plate and a battery pack. The water cooling plate comprises a plate body and a beam body, the plate body is provided with a flow channel, the beam body is connected to the circumferential side portion of the plate body, the beam body is provided with an inner cavity, the inner cavity corresponds to at least one side of the plate body and communicates with the flow channel, and the beam body is suitable for cooling a heating device making contact with the beam body. According to the water-cooling plate, the heat exchange capacity of at least part of sections on the frame of the water-cooling plate can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery packs, and particularly relates to a water cooling plate and a battery pack. Background Art

[0002] During the use of the battery pack, heat will be generated. Therefore, it is necessary to cool the battery modules in the battery pack through a water cooling plate to avoid performance degradation of the battery pack caused by heat accumulation and improve the thermal management performance of the battery pack. Summary of the Utility Model

[0003] The utility model is based on the discovery and recognition of the following facts and problems by the inventor:

[0004] The inventor realizes that the frame in the circumferential direction of the water cooling plate does not have heat dissipation capacity. When some heat-generating devices are arranged on the frame, the heat-generating devices arranged on the frame cannot be dissipated.

[0005] The utility model aims to solve at least one of the technical problems in the related art to a certain extent.

[0006] To this end, an embodiment of the utility model provides a water cooling plate, which can improve the heat exchange capacity of at least part of the section on the frame of the water cooling plate.

[0007] An embodiment of the utility model also provides a battery pack.

[0008] The water cooling plate according to the embodiment of the utility model includes:

[0009] A plate body, the plate body having a flow channel;

[0010] A beam body, the beam body being connected to the circumferential side of the plate body, the beam body having an inner cavity, the inner cavity corresponding to at least one side of the plate body, and the inner cavity being connected to the flow channel, and the beam body being adapted to cool the heat-generating device in contact with it.

[0011] The water cooling plate according to the embodiment of the utility model can improve the heat exchange capacity of at least part of the section on the frame of the water cooling plate.

[0012] In some embodiments, the beam body has a mounting portion, the mounting portion is arranged corresponding to the inner cavity, and the mounting portion is adapted to connect the heat-generating device.

[0013] In some embodiments, one side of the beam body facing the plate body has a first hole, and the first hole is connected to the flow channel and the inner cavity;

[0014] And / or, the number of the beam bodies is multiple, the multiple beam bodies are connected end to end in sequence along the circumference of the plate body, and at least part of the beam bodies are provided with the inner cavity.

[0015] In some embodiments, a cover plate is further included. The inner cavity has a first opening, and the cover plate is correspondingly arranged with the first opening, and the cover plate is connected to the beam body to seal the first opening.

[0016] In some embodiments, the plate body includes a water inlet plate and a water outlet plate arranged side by side. The water inlet plate has a first flow channel, and the water outlet plate has a second flow channel. The water outlet end of the first flow channel and the water inlet end of the second flow channel are both communicated with the inner cavity, so that the first flow channel and the second flow channel are communicated with each other.

[0017] In some embodiments, a water inlet joint and a water outlet joint are further included. The water inlet joint is connected to the water inlet end of the first flow channel, and the water outlet joint is connected to the water outlet end of the second flow channel.

[0018] In some embodiments, the water inlet joint and the water outlet joint are connected to the beam body. The beam body is provided with a water inlet cavity and a water outlet cavity. The water inlet cavity is connected to the water inlet joint and the water inlet end of the first flow channel, and the water outlet cavity is connected to the water outlet joint and the water outlet end of the second flow channel.

[0019] In some embodiments, the water inlet cavity, the water outlet cavity and the inner cavity are located on the same side of the plate body and on the same beam body.

[0020] In some embodiments, both the first flow channel and the second flow channel include a plurality of main flow channels arranged in parallel and communicated in sequence. A plurality of partition plates are arranged in each main flow channel, and the plurality of partition plates divide the main flow channel into a plurality of parallel sub-flow channels.

[0021] The present utility model further provides a battery pack, including the water cooling plate as described in any one of the above embodiments. Description of the Drawings

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the water cooling plate according to the embodiment of the present utility model.

[0023] Figure 2 It is a front view structural schematic diagram of the water cooling plate according to the embodiment of the present utility model.

[0024] Figure 3 It is a disassembled structural schematic diagram of the water cooling plate according to the embodiment of the present utility model.

[0025] Figure 4 It is a disassembled structural schematic diagram of the water cooling plate according to another embodiment of the present utility model.

[0026] Reference Numerals:

[0027] 100, water cooling plate;

[0028] 1. Plate body; 11. Water inlet plate; 12. Water outlet plate; 13. First flow channel; 14. Second flow channel; 15. Main flow channel; 151. Sub-flow channel; 152. Partition board;

[0029] 2. Beam body; 21. Inner cavity; 22. First hole; 23. Water inlet joint; 24. Water outlet joint; 25. Water inlet cavity; 26. Water outlet cavity; 27. Cover plate; 28. Installation part. Detailed implementation manners

[0030] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0031] The following is combined with Figures 1 to 4 to describe in detail the water-cooled plate 100 and the battery pack of the embodiments of the present utility model.

[0032] As Figures 1 to 4 shown, the water-cooled plate 100 of the embodiment of the present utility model includes a plate body 1 and a beam body 2. The plate body 1 has a flow channel. The beam body 2 is connected to the circumferential side portion of the plate body 1. The beam body 2 has an inner cavity 21. The inner cavity 21 corresponds to at least one side of the plate body 1, and the inner cavity 21 is communicated with the flow channel. The beam body 2 is adapted to cool the heat-generating device in contact with it.

[0033] It should be understood that the beam body 2 is arranged on the circumferential side portion of the plate body 1. The beam body 2 can be used as a frame to reinforce the structure of the plate body 1, improving the overall structural stability and support performance of the water-cooled plate 100. At the same time, the coolant can flow in the flow channel in the plate body 1 and the inner cavity 21 of the beam body 2, so that the section on the beam body 2 corresponding to the inner cavity 21 has the ability of heat exchange. When some heat-generating devices are attached to the beam body 2, the corresponding heat-generating devices can be cooled. The embodiments of the present utility model can improve the heat exchange ability of at least part of the section on the frame of the water-cooled plate 100.

[0034] In some embodiments, the beam body 2 has an installation part 28. The installation part 28 is arranged corresponding to the inner cavity 21. The installation part 28 is adapted to connect the heat-generating device. That is to say, in order to facilitate the installation and fixation of the heat-generating device, by arranging the installation part 28 on the beam body 2, the heat-generating device is fixed on the beam body 2 through adhesives or connecting parts such as bolts.

[0035] For example, the installation part 28 is a plurality of threaded holes arranged on the beam body 2. When the heat-generating device is attached and abutted against the beam body 2, the heat-generating device is fixed on the beam body 2 through bolts.

[0036] Furthermore, in order to improve the heat exchange capacity between the beam body 2 and the heating device, some heat-conducting materials can be coated on the contact area between the beam body 2 and the heating device, so that the contact effect between the heating device and the beam body 2 is better, and the occurrence of intervals or gaps between the contact surfaces of the beam body 2 and the heating device can be avoided.

[0037] In some embodiments, one side of the beam body 2 facing the plate body 1 has a first hole 22, and the first hole 22 is communicated with the flow channel and the inner cavity 21.

[0038] In the embodiment of the present utility model, the side wall of the beam body 2 abuts against the plate body 1. In order to communicate the inner cavity 21 of the beam body 2 with the flow channel of the plate body 1, a first hole 22 is provided on the beam body 2. The number of the first holes 22 is multiple. After the beam body 2 and the plate body 1 are abutted, the flow channel in the plate body 1 is communicated with the inner cavity 21 through the first hole 22.

[0039] Meanwhile, in order to improve the heat exchange capacity of the beam body 2, the inner cavity 21 serves as a part of the flow channel, and the coolant in the flow channel needs to flow through the inner cavity 21 before flowing to the next flow channel, so as to ensure that the coolant in the inner cavity 21 is in a flowing state.

[0040] Optionally, the number of the first holes 22 is multiple. For example, the number of the first holes 22 is 3 to 20.

[0041] Furthermore, the beam bodies 2 are circumferentially arranged on the plate body 1. Therefore, the number of the beam bodies 2 is multiple, and the multiple beam bodies 2 are sequentially connected end to end along the circumference of the plate body 1, and at least part of the beam bodies 2 are provided with inner cavities 21.

[0042] For example, if the plate body 1 is rectangular, the number of the beam bodies 2 is four, and the four beam bodies 2 respectively abut against the four side edges of the circumference of the plate body 1, so that the four beam bodies 2 form a rectangular frame surrounding the circumference of the plate body 1. According to the requirements of the design of the flow channel in the plate body 1, the design of the coolant inlet and outlet, the arrangement position of the heating device, etc., the inner cavity 21 can be provided in each beam body 2, or the inner cavity 21 can be provided only in one of the beam bodies 2, so that one of the beam bodies 2 has heat exchange capacity, or multiple beam bodies 2 all have heat exchange capacity.

[0043] In some embodiments, the water-cooled plate 100 of the embodiment of the present utility model further includes a cover plate 27. The inner cavity 21 has a first opening, the cover plate 27 is correspondingly arranged with the first opening, and the cover plate 27 is connected with the beam body 2 to seal the first opening.

[0044] The setting of the first opening facilitates the processing of the inner cavity 21. The cover plate 27 is used to block the first opening, so that the flow channel is sealed after the inner cavity 21 is communicated with the flow channel.

[0045] Optionally, after the installation of the water-cooling plate 100 is completed, the opening position of the first opening can be set below the water-cooling plate 100, without affecting the layout and appearance of the heat-generating device.

[0046] Optionally, the inner cavity 21 is a sunken groove structure, the cover plate 27 is arranged at the notch of the inner cavity 21, and the first hole 22 is opened on one side wall of the inner cavity 21.

[0047] In some embodiments, the plate body 1 includes a water inlet plate 11 and a water outlet plate 12 arranged side by side. The water inlet plate 11 has a first flow channel 13, and the water outlet plate 12 has a second flow channel 14. The water outlet end of the first flow channel 13 and the water inlet end of the second flow channel 14 are both communicated with the inner cavity 21, so that the first flow channel 13 and the second flow channel 14 are communicated with each other.

[0048] It should be understood that the flow channels in the plate body 1 include the first flow channel 13 and the second flow channel 14. The coolant flows in from the water inlet end of the first flow channel 13, and after flowing through the first flow channel 13, the inner cavity 21 and the second flow channel 14 in sequence, it flows out from the water outlet end of the second flow channel 14. That is to say, the coolant in the first flow channel 13 needs to pass through the inner cavity 21 to enter the second flow channel 14, so as to ensure that the coolant in the inner cavity 21 is in a flowing state. At the same time, the inner cavity 21 can provide a sufficient coolant aggregation space, which is convenient for the coolant in the first flow channel 13 to be fully mixed in the inner cavity 21, and ensure better temperature consistency of the coolant flowing into the second flow channel 14.

[0049] Further, the water-cooling plate 100 further includes a water inlet joint 23 and a water outlet joint 24. The water inlet joint 23 is connected to the water inlet end of the first flow channel 13, and the water outlet joint 24 is connected to the water outlet end of the second flow channel 14. The water inlet joint 23 and the water outlet joint 24 are used to connect to external devices to realize the circulating flow of the coolant and take out the heat of the battery pack.

[0050] Further, the water inlet joint 23 and the water outlet joint 24 are connected to the beam body 2. The beam body 2 is provided with a water inlet cavity 25 and a water outlet cavity 26. The water inlet cavity 25 is connected to the water inlet joint 23 and the water inlet end of the first flow channel 13, and the water outlet cavity 26 is connected to the water outlet joint 24 and the water outlet end of the second flow channel 14.

[0051] The water inlet cavity 25 and the water outlet cavity 26 are arranged on the beam body 2. The water inlet cavity 25 can more evenly distribute the coolant of the water inlet joint 23 into the first flow channel 13, and the water outlet cavity 26 can make the coolant of the second flow channel 14 converge and flow out through the water outlet joint 24. In addition, the water inlet cavity 25 and the water outlet cavity 26 also have the function of improving the heat exchange capacity of the beam body 2, and can cool some sections of the beam body 2. The heat-generating devices arranged at the positions corresponding to the water inlet cavity 25 and the water outlet cavity 26 on the beam body 2 can play a role in cooling and improve the heat exchange capacity of the beam body 2.

[0052] In some embodiments, the water inlet chamber 25, the water outlet chamber 26, and the inner chamber 21 are located on the same side of the plate body 1 and on the same beam body 2. That is to say, by arranging the water inlet chamber 25, the water outlet chamber 26, and the inner chamber 21 on the same beam body 2, on the one hand, the processing cost of different beam bodies 2 can be reduced, and only one of the beam bodies 2 needs to be processed for the chambers. On the other hand, the heat exchange capacity of the beam body 2 can be improved, enabling the heat-generating components to be concentratedly arranged on the beam body 2, with better integration and heat exchange effects.

[0053] In addition, due to the design of the flow channels in the plate body 1, arranging the water inlet chamber 25, the water outlet chamber 26, and the inner chamber 21 on the same side of the plate body 1. For example, the beam bodies 2 in the circumferential direction of the plate body 1 are divided into a front beam, a rear beam, and two side beams. When the water inlet chamber 25, the water outlet chamber 26, and the inner chamber 21 are arranged on the front beam of the plate body 1, the heat exchange capacity of the front beam can be improved, making it more convenient for the different chambers in the front beam to communicate with the flow channels, improving the matching degree between the different chambers and the flow channels, maintaining the normal circulation flow of the coolant in the flow channels, reducing the interference with the coolant flow, and the inner chamber 21 can also converge the coolant located upstream of it, improving the flow effect of the coolant and the consistency of the temperature of the coolant located downstream of it.

[0054] In some embodiments, both the first flow channel 13 and the second flow channel 14 include a plurality of main flow channels 15 arranged in parallel and connected in sequence. A plurality of partition plates 152 are provided in each main flow channel 15, and the plurality of partition plates 152 divide the main flow channel 15 into a plurality of parallel sub-flow channels 151.

[0055] It should be understood that the plurality of main flow channels 15 in the first flow channel 13 and the second flow channel 14 flow back and forth in the first direction. At the same time, a plurality of sub-flow channels 151 are arranged in each main flow channel 15, which can improve the uniformity of the flow rate distribution in the main flow channel 15, avoid the problem of uneven distribution of the coolant in the main flow channel 15 and large differences in the heat exchange capacity of different regions, and improve the overall heat exchange capacity of the water-cooled plate 100.

[0056] Wherein, the first direction is the left-right direction shown in the figure. The main flow channels 15 and the sub-flow channels 151 both extend in the left-right direction shown in the figure. The plurality of main flow channels 15 are arranged in parallel and side by side in the front-rear direction, and the plurality of sub-flow channels 151 in each main flow channel 15 are also arranged in parallel and side by side in the front-rear direction.

[0057] For example, both the water inlet plate 11 and the water outlet plate 12 are provided with two main flow channels 15, and 3 to 10 sub-flow channels 151 are arranged in each main flow channel 15.

[0058] An embodiment of the present invention also provides a battery pack, including the water-cooled plate 100 in any one of the above embodiments.

[0059] At least some of the beneficial effects achieved by the battery pack according to the embodiments of the present utility model are the same as those achieved by the water-cooling plate 100 in the above embodiments, and thus will not be elaborated herein.

[0060] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0061] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0062] In the present utility model, unless otherwise clearly specified and limited, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communication with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0063] In the present utility model, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0064] In the present utility model, terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0065] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A water-cooling plate, characterized in that, Comprising: A plate body having a flow channel; A beam body connected to the circumferential side portion of the plate body, the beam body having an inner cavity corresponding to at least one side of the plate body, and the inner cavity communicating with the flow channel, the beam body being adapted to cool a heating device in contact therewith.

2. The water cooling plate according to claim 1, wherein The beam body has a mounting portion corresponding to the inner cavity, and the mounting portion is adapted to connect a heating device.

3. The water-cooling plate according to claim 1, wherein, One side of the beam body facing the plate body has a first hole, and the first hole communicates with the flow channel and the inner cavity; And / or, the number of the beam bodies is multiple, and the multiple beam bodies are sequentially connected end to end along the circumference of the plate body, and at least part of the beam bodies are provided with the inner cavity.

4. The water-cooling plate according to claim 1, characterized in that, It further includes a cover plate, the inner cavity has a first opening, the cover plate is correspondingly arranged with the first opening, and the cover plate is connected to the beam body to seal the first opening.

5. The water-cooling plate according to any one of claims 1 to 4, characterized in that, The plate body includes a water inlet plate and a water outlet plate arranged side by side, the water inlet plate has a first flow channel, the water outlet plate has a second flow channel, and the water outlet end of the first flow channel and the water inlet end of the second flow channel are both communicated with the inner cavity so that the first flow channel and the second flow channel are communicated with each other.

6. The water-cooling plate according to claim 5, wherein, It further includes a water inlet joint and a water outlet joint, the water inlet joint is connected to the water inlet end of the first flow channel, and the water outlet joint is connected to the water outlet end of the second flow channel.

7. The water-cooling plate according to claim 6, characterized in that, The water inlet joint and the water outlet joint are connected to the beam body, and the beam body is provided with a water inlet cavity and a water outlet cavity. The water inlet cavity is connected to the water inlet joint and the water inlet end of the first flow channel, and the water outlet cavity is connected to the water outlet joint and the water outlet end of the second flow channel.

8. The water-cooling plate according to claim 7, wherein, The water inlet cavity, the water outlet cavity and the inner cavity are located on the same side of the plate body and on the same beam body.

9. The water-cooling plate according to claim 5, wherein, Both the first flow channel and the second flow channel include a plurality of main flow channels arranged in parallel and sequentially communicated. A plurality of partition plates are provided in each main flow channel, and the plurality of partition plates divide the main flow channel into a plurality of parallel sub-flow channels.

10. A battery pack, characterized in that, It includes a water-cooled plate according to any one of claims 1 to 9.

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