Cooling plate, battery pack and vehicle

Abstract

The utility model discloses a cooling plate, a battery pack and a vehicle, the cooling plate comprises a plate body and an adapter body, a cooling flow channel is arranged in the plate body, the plate body is provided with at least two liquid inlet holes and at least two liquid outlet holes communicated with the cooling flow channel, the adapter body is internally provided with a first flow channel and a second flow channel, and the first flow channel and the second flow channel are communicated with the cooling flow channel. The adapter body is provided with a total liquid inlet hole communicated with the first flow channel and a total liquid outlet hole communicated with the second flow channel, the first flow channel is communicated with all the liquid inlet holes, and the second flow channel is communicated with all the liquid outlet holes. The cooling plate provided by the utility model has the advantage of high design flexibility of the cooling flow channels.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a cooling plate, a battery pack and a vehicle. Background Art

[0002] As the battery direct cooling technology solution gradually matures, more and more power battery assembly products adopt direct cooling technology. The performance requirements of direct cooling plates are much higher than those of traditional liquid cooling plates, especially for normal working compressive strength, which is 10 times that of liquid cooling plates.

[0003] Cold plates using direct cooling technology usually achieve the confluence of various direct cooling channels inside the cold plate to form a total inlet and outlet hole outside the cold plate that is connected to the cooling system. However, this setting makes the flow path design inside the cold plate complicated and also limits the design and distribution area of ​​the direct cooling channels. Utility Model Content

[0004] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, an embodiment of the present application provides a cooling plate, which has the advantage of high design flexibility of cooling channels.

[0006] An embodiment of the present application also provides a battery pack.

[0007] An embodiment of the present application further provides a vehicle.

[0008] According to an embodiment of the present application, the cooling plate includes a plate body and an adapter body, wherein a cooling channel is provided in the plate body, the plate body has a liquid inlet hole and a liquid outlet hole connected to the cooling channel, and there are at least two liquid inlet holes and / or liquid outlet holes; a first channel and a second channel are provided in the adapter body, the adapter body has a total liquid inlet hole connected to the first channel and a total liquid outlet hole connected to the second channel, the first channel is connected to all the liquid inlet holes, and the second channel is connected to all the liquid outlet holes.

[0009] According to the cooling plate of the embodiment of the present application, at least two liquid outlet holes are formed on the plate body, and / or at least two liquid inlet holes are formed on the plate body, the first flow channel of the adapter body connects all the liquid inlet holes, and the second flow channel connects all the liquid outlet holes, so that the cooling plate can form a total liquid inlet hole and a total liquid outlet hole, ensuring that the cooling plate of this embodiment is compatible with the existing cooling system. Among them, at least two liquid outlet holes and / or liquid inlet holes are arranged on the plate body, combined with the design of the adapter body, which is equivalent to integrating part of the flow paths for converging the direct cooling channels in the plate body on the adapter body, so that when designing the cooling channels in the plate body to form the direct cooling channels, there are fewer other flow paths in the plate body required for converging the direct cooling channels, and thus the design of the cooling channels in the plate body is more flexible, and a direct cooling channel with a larger distribution area can be designed.

[0010] In some embodiments, the plate body includes an upper plate and a lower plate, the upper plate and the lower plate are fixedly connected, the upper plate and the lower plate enclose the cooling channel, and the liquid inlet and the liquid outlet are provided on the upper plate.

[0011] In some embodiments, the cooling plate also includes a current collector, which is connected between the plate body and the adapter body. A current collecting cavity is provided in the current collector. The current collector has a current collecting hole and a diversion hole connected to the current collecting cavity. The current collecting hole is connected to the first flow channel. There are at least two liquid inlet holes, and the diversion holes are connected to the liquid inlet holes in a one-to-one correspondence.

[0012] In some embodiments, the current collector includes a first plate and a second plate opposite to each other along the thickness direction of the plate body, the first plate and the second plate are fixedly connected and enclosed to form the current collecting cavity, the diversion hole is provided on the first plate, the current collecting hole is provided on the second plate, the first plate is connected to the plate body, and the second plate is connected to the adapter.

[0013] In some embodiments, a surface of the first plate facing away from the second plate is provided with positioning sleeves corresponding to the diversion holes one by one, the positioning sleeves are arranged around the corresponding diversion holes, and the positioning sleeves are plugged into the corresponding liquid inlet holes.

[0014] In some embodiments, the axial direction of the total liquid inlet hole forms an angle with the axial direction of the liquid inlet hole, and the axial direction of the total liquid outlet hole forms an angle with the axial direction of the liquid outlet hole.

[0015] In some embodiments, the adapter further has a first opening connected to the first flow channel and a third opening connected to the second flow channel, the first opening is connected to the liquid inlet, and the third opening is connected to the liquid outlet;

[0016] The axial directions of the first opening and the third opening are consistent, the axial directions of the total liquid inlet and the total liquid outlet are consistent, and the axial direction of the first opening is perpendicular to the axial direction of the total liquid inlet.

[0017] In some embodiments, the cooling channel includes a diverter channel, a converging channel and a plurality of direct cooling channels, the diverter channel corresponds one-to-one to and is connected with the liquid inlet hole, the diverter channel is connected with at least two of the direct cooling channels, the converging channel corresponds one-to-one to and is connected with the liquid outlet hole, and the converging channel is connected with at least two of the direct cooling channels.

[0018] In some embodiments, each of the direct cooling flow channels includes a first flow channel, a second flow channel, and a third flow channel connected in sequence, the first flow channel and the third flow channel both extend along a first direction, the second flow channel extends along a second direction, and the first direction is at an angle to the second direction; the diversion flow channel includes at least one first-level diversion flow channel, each of the first-level diversion flow channel is connected to a plurality of the first flow channels, and the converging flow channel is connected to a plurality of the third flow channels.

[0019] In some embodiments, there are multiple primary diversion channels, and the diversion channels further include at least one multi-stage diversion channel, and the multi-stage diversion channel is connected to all the primary diversion channels;

[0020] The multi-stage flow diversion channel with the highest number of stages is located in the middle of the plate body in the second direction and is connected to the liquid inlet hole, and the plurality of first-stage flow diversion channels are symmetrically distributed on both sides of the multi-stage flow diversion channel in the second direction.

[0021] In some embodiments, the confluence channel includes a primary confluence channel and a multi-level confluence channel, there are at least two primary confluence channels, each of the primary confluence channels is connected to at least two of the third flow paths; the multi-level confluence channel is connected to all the primary confluence channels, the multi-level confluence channel with the highest level is located in the middle of the plate body in the second direction and is connected to the liquid outlet, and the plurality of primary confluence channels are symmetrically distributed on both sides of the multi-level confluence channel in the second direction.

[0022] In some embodiments, the plate body is provided with a plurality of mounting holes, the mounting holes penetrate the plate body along the thickness direction of the plate body, the mounting holes are provided with cooling channels on both sides of the plate body in the width direction, and the cooling channels include bending sections for avoiding the mounting holes.

[0023] The battery pack according to an embodiment of the present application includes a cooling plate as described in any of the above embodiments.

[0024] The technical advantages of the battery pack according to the embodiment of the present application are the same as the technical advantages of the cooling plate in the above-mentioned embodiment, and will not be repeated here.

[0025] The vehicle according to the embodiment of the present application includes the battery pack as described in the above embodiment.

[0026] The technical advantages of the vehicle according to the embodiment of the present application are the same as the technical advantages of the battery pack in the above-mentioned embodiment, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of a cooling plate according to an embodiment of the present application.

[0028] Figure 2Schematic diagram of the lower plate in the cooling plate according to an embodiment of the present application.

[0029] Figure 3 It is a partial enlarged view of the lower plate in the cooling plate according to the embodiment of the present application.

[0030] Figure 4 is an exploded view of a plate body in a cooling plate according to an embodiment of the present application.

[0031] Figure 5 Schematic diagram of a current collector in a cooling plate according to an embodiment of the present application.

[0032] Figure 6 is another schematic diagram of a current collector in a cooling plate according to an embodiment of the present application.

[0033] Figure 7 is a schematic diagram of a transition body in a cooling plate according to an embodiment of the present application.

[0034] Reference numerals:

[0035] 1. Plate body; 11. Upper plate; 111. Liquid inlet hole; 112. Liquid outlet hole; 113. Mounting hole; 12. Lower plate; 13. Cooling channel; 131. First channel; 132. Second channel; 133. Third channel; 134. Primary branch channel; 135. Secondary branch channel; 136. Primary converging channel; 137. Secondary converging channel; 14. DC zone; 15. Diverter zone; 2. Collector; 21. Second plate; 211. Collector hole; 22. First plate; 221. Diverter hole; 23. Positioning sleeve; 3. Adapter body; 31. First channel; 311. Total liquid inlet hole; 32. Second channel; 321. Total liquid outlet hole. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below, and 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 be used to explain the present application, but cannot be understood as limiting the present application.

[0037] Combine the following Figure 1-Figure 7 A cooling plate according to an embodiment of the present application is described.

[0038] The cooling plate according to the embodiment of the present application includes a plate body 1 and an adapter body 3. The plate body 1 is provided with a cooling channel 13. The plate body 1 has a liquid inlet hole 111 and a liquid outlet hole 112 connected to the cooling channel 13. There are at least two liquid inlet holes 111 and / or liquid outlet holes 112. The adapter body 3 is provided with a first channel 31 and a second channel 32. The adapter body 3 has a total liquid inlet hole 311 connected to the first channel 31 and a total liquid outlet hole 321 connected to the second channel 32. The first channel 31 is connected to all the liquid inlet holes 111, and the second channel 32 is connected to all the liquid outlet holes 112.

[0039] According to the cooling plate of the embodiment of the present application, at least two liquid outlet holes 112 are formed on the plate body 1, and / or at least two liquid inlet holes 111 are formed on the plate body 1, the first flow channel 31 of the adapter body 3 connects all the liquid inlet holes 111, and the second flow channel 32 connects all the liquid outlet holes 112, so that the cooling plate can form a total liquid inlet hole 311 and a total liquid outlet hole 321, so as to ensure that the cooling plate of this embodiment is adapted to the existing cooling system. Among them, at least two liquid outlet holes 112 and / or liquid inlet holes 111 are arranged on the plate body 1, combined with the design of the adapter body 3, which is equivalent to integrating part of the flow path for converging the direct cooling flow channels in the plate body 1 on the adapter body 3, so that when designing the direct cooling flow channel 13 in the plate body 1 to form the direct cooling flow channel, the plate body 1 has fewer other flow paths required for converging the direct cooling flow channels, and thus the design of the cooling flow channel 13 in the plate body 1 is more flexible, and a direct cooling flow channel with a larger distribution area can be designed.

[0040] It should be noted that the plate body 1 may be provided with one liquid inlet hole 111 and multiple liquid outlet holes 112, or multiple liquid inlet holes 111 and one liquid outlet hole 112, or multiple liquid inlet holes 111 and multiple liquid outlet holes 112. The more the number of liquid inlet holes 111 and liquid outlet holes 112, the lower the requirement for the confluence of the direct cooling flow channel in the plate body 1, the number of flow channels for confluence can be designed to be smaller, and the distribution area is correspondingly smaller.

[0041] In some embodiments, Figure 1 , Figure 5 and Figure 6 As shown, the cooling plate also includes a current collector 2, which is connected between the plate body 1 and the adapter body 3. A current collecting cavity is provided in the current collector 2. The current collector 2 has a current collecting hole 211 and a diverter hole 221 connected to the current collecting cavity. The current collecting hole 211 is connected to the first flow channel 31. There are at least two liquid inlet holes 111, and the diverter holes 221 are connected to the liquid inlet holes 111 in a one-to-one correspondence.

[0042] That is, when there are multiple liquid inlet holes 111, the flow collecting holes 221 of the current collector 2 are arranged to correspond to and communicate with the liquid inlet holes 111 one by one, so that the current collector 2 can achieve the confluence of multiple liquid inlet holes 111. At this time, the first flow channel 31 of the adapter 3 is connected to the collecting hole 211 to achieve the connection with all the liquid inlet holes 111. At this time, the adapter 3 only needs to design an opening connecting the first flow channel 31 and the collecting hole 211, and the adapter 3 has a simple structure and is easy to install.

[0043] Specifically, Figure 1 and Figure 4 As shown, the number of the liquid inlet holes 111 is three, the number of the liquid outlet hole 112 is one, and the plate body 1, the current collector 2 and the adapter body 3 are connected to each other in pairs.

[0044] It should be noted that the number of the liquid outlet holes 112 may be multiple, and the current collector 2 converges all the liquid outlet holes 112 so that the second flow channel 32 of the adapter 3 can be connected to all the liquid outlet holes 112 through only one opening.

[0045] In some embodiments, Figure 4 As shown, the plate body 1 includes an upper plate 11 and a lower plate 12 , which are fixedly connected to form a cooling channel 13 , and a liquid inlet hole 111 and a liquid outlet hole 112 are provided on the upper plate 11 .

[0046] The liquid inlet hole 111 and the liquid outlet hole 112 are simply and conveniently formed on the upper plate 11. At this time, the current collector 2 is connected to the upper plate 11 to realize the connection between the diversion hole 221 and the liquid inlet hole 111, and the adapter body 3 is connected to the upper plate 11 to realize the connection between the third opening and the liquid outlet hole 112. The installation difficulty of the current collector 2 and the adapter body 3 on the plate body 1 is low.

[0047] Specifically, the upper plate 11 is a plain plate, and the lower plate 12 is formed by stamping or blow molding a flow channel groove with an upper opening, and the upper plate 11 is buckled on the upper side of the lower plate 12 to close the upper opening of the flow channel groove, so that the space of the flow channel groove forms a cooling flow channel 13. The outer contour dimensions of the upper plate 11 and the lower plate 12 are consistent for easy docking and positioning, and the upper plate 11 and the lower plate 12 are connected by brazing.

[0048] It should be noted that the adapter body 3 can be integrally formed, or can include a first adapter part and a second adapter part that are detachable or in a separated state, and the first flow channel 31 and the second flow channel 32 are respectively formed on the first adapter part and the second adapter part.

[0049] In some embodiments, Figure 5 and Figure 6 As shown, the current collector 2 includes a first plate 22 and a second plate 21 opposite to each other along the thickness direction of the plate body 1. The first plate 22 and the second plate 21 are fixedly connected and enclosed to form a current collecting cavity, the first plate 22 is provided with a diversion hole 221, the second plate 21 is provided with a current collecting hole 211, the first plate 22 is connected to the plate body 1, and the second plate 21 is connected to the adapter 3.

[0050] That is, the current collector 2 is generally a flat plate-like structure. On the basis of ensuring the flow rate in the current collector 2, the size of the current collector 2 along the third direction can be designed to be smaller so that the maximum thickness of the cooling plate is lower, thereby effectively saving space in the height direction of the vehicle and effectively improving the integration of the battery pack.

[0051] Specifically, the second plate 21 is buckled on the first plate 22 and connected to the first plate 22 by brazing. In addition, the first plate 22 is in contact with the upper plate 11 of the plate body 1 and connected by brazing, and the second plate 21 is in contact with the adapter body 3 and connected by brazing. One of the first plate 22 and the second plate 21 is formed into a manifold by stamping or inflation, and the other is a bare plate. When the upper plate 11 is buckled on the top of the lower plate 12, the space of the manifold forms a manifold cavity.

[0052] In some embodiments, Figure 4 As shown, the surface of the first plate 22 facing away from the second plate 21 is provided with positioning sleeves 23 corresponding to the diversion holes 221 one by one. The positioning sleeves 23 are arranged around the corresponding diversion holes 221 and are plugged into the corresponding liquid inlet holes 111 .

[0053] When installing the current collector 2 on the plate body 1, multiple positioning sleeves 23 are respectively matched in the corresponding liquid inlet holes 111 until the first plate 22 and the upper plate 11 are in contact with each other, which means that the docking and positioning of the two are completed, and the installation accuracy is high after the brazing connection is completed.

[0054] Specifically, the axial dimension of the positioning sleeve 23 is preferably less than or equal to the thickness of the upper plate 11 to prevent at least a portion of the positioning sleeve 23 from extending into the cooling channel 13 and affecting the flow of the cooling medium in the cooling channel 13 .

[0055] In some embodiments, the axial direction of the total liquid inlet hole 311 forms an angle with the axial direction of the liquid inlet hole 111 , and the axial direction of the total liquid outlet hole 321 forms an angle with the axial direction of the liquid outlet hole 112 .

[0056] At this time, when the adapter body 3 is connected to the pipeline of the external cooling system through the total liquid inlet hole 311 and the total liquid outlet hole 321, the pipeline does not need to be directly above the adapter body 3. On the basis of the high integration of the battery pack, the pipeline is less restricted by space during installation, and the difficulty of pipeline installation is low, which effectively reduces the installation process requirements of the cooling system.

[0057] Specifically, Figure 1 and Figure 7 As shown, the adapter body 3 also has a first opening connected to the first flow channel 31 and a third opening connected to the second flow channel 32. The first opening is connected to the liquid inlet hole 111, and the third opening is connected to the liquid outlet hole 112. The axial directions of the first opening and the third opening are consistent, the axial directions of the total liquid inlet hole 311 and the total liquid outlet hole 321 are consistent, and the axial direction of the first opening is perpendicular to the axial direction of the total liquid inlet hole 311.

[0058] On the basis that the axial directions of the liquid inlet hole 111, the liquid outlet hole 112 and the collecting hole 211 are vertical, the axial directions of the total liquid inlet hole 311 and the total liquid outlet hole 321 are horizontal, thereby greatly reducing the difficulty of connecting the adapter 3 with the pipelines of the external cooling system and effectively improving the integration of the battery pack.

[0059] In some embodiments, the cooling channel 13 includes a diverter channel, a converging channel and a plurality of direct cooling channels. The diverter channel corresponds one-to-one to and is connected to the liquid inlet hole 111, the diverter channel is connected to at least two direct cooling channels, the converging channel corresponds one-to-one to and is connected to the liquid outlet hole 112, and the converging channel is connected to at least two direct cooling channels.

[0060] By setting a plurality of direct cooling channels, it is ensured that the plate body 1 has a larger area with a uniform cooling effect. The diverter channel and the converging channel preliminarily converge the direct cooling channel, so as to form a smaller number or a smaller distribution area of ​​the liquid inlet holes 111 and the liquid outlet holes 112 on the plate body 1, and further reduce the difficulty of connecting the external current collector 2 and the adapter 3 with the plate body 1.

[0061] In some embodiments, Figure 2 and Figure 3 As shown, each direct cooling channel includes a first channel 131, a second channel 132, and a third channel 133 connected in sequence, the first channel 131 and the third channel 133 extend in a first direction, the second channel 132 extends in a second direction, and the first direction forms an angle with the second direction. The flow splitting channel includes at least one primary flow splitting channel 134, each primary flow splitting channel 134 is connected to a plurality of first channels 131, and the converging channel is connected to a plurality of third channels 133.

[0062] The plurality of first flow paths 131 and the plurality of second flow paths 132 arranged at intervals along the second direction form a DC zone 14, which is the main heat dissipation area. Combined with the characteristics of the direct cooling cooling medium (R134a, tetrafluoroethane), after the cooling medium undergoes heat exchange inside the flow channel through phase change, the cooling medium is in an uncertain state (gaseous or gas-liquid mixed state). If a shunt design is made, the shunt situation of the cooling medium cannot be determined, resulting in uneven heat dissipation of each battery cell. The cooling medium does not shunt when passing through the DC zone 14, effectively ensuring uniform heat dissipation of each battery cell in the battery cell module.

[0063] At the same time, each first-level branch flow channel 134 is connected to multiple first flow paths 131, and the converging flow channel is connected to multiple third flow paths 133, thereby realizing the confluence of multiple direct cooling flow channels, so as to facilitate the formation of a smaller number or a smaller distribution area of ​​liquid inlets and outlets on the plate body 1.

[0064] Specifically, the board body 1 has a shunt area 15 and a direct current area 14 arranged along a first direction. The primary shunt flow channel 134 is distributed in the shunt area 15, and there are multiple direct cooling channels distributed in the direct current area 14. The battery module placed on the board body 1 corresponds to the direct current area 14 on the board body 1. The first direction is the length direction of the board body 1, and the second direction is the width direction of the board body 1. Multiple first flow paths 131 and multiple second flow paths 132 are arranged at equal intervals along the second direction, and all flow paths in the direct current area 14 are arranged in a mirror-symmetrical manner relative to the center line of the board body 1 along the first direction.

[0065] In some embodiments, there are multiple primary diverter channels 134, and the diverter channels further include at least one multi-stage diverter channel, and the multi-stage diverter channels are connected to all primary diverter channels 134. The multi-stage diverter channel with the highest number of stages is located in the middle of the plate body 1 in the second direction and is connected to the liquid inlet 111, and multiple primary diverter channels 134 are symmetrically distributed on both sides of the multi-stage diverter channel in the second direction.

[0066] In the case where there are a large number of first flow paths 131, a larger number of first flow paths 131 can be connected simultaneously through a first-level shunt flow channel 134, and a larger number of first-level shunt flow channels 134 can be connected simultaneously through a multi-level shunt flow channel to form a suitable number of liquid inlet holes 111. At the same time, the design of the multi-level shunt flow channel with the highest number of levels being located in the middle of the plate body 1 in the second direction allows multiple liquid inlet holes 111 to be gathered in a smaller area, thereby allowing the area of ​​the first plate 22 of the current collector 2 to be designed to be smaller, that is, the volume of the current collector 2 can be designed to be smaller, effectively reducing the manufacturing cost of the cooling plate. At the same time, the design of multiple first-level shunt flow channels 134 symmetrically distributed on both sides of the multi-level shunt flow channel in the second direction reduces the difficulty of manufacturing the first-level shunt flow channel 134.

[0067] Specifically, the multi-stage flow diversion channel includes a secondary flow diversion channel 135, and there are at least four primary flow diversion channels 134. Each secondary flow diversion channel 135 corresponds to at least two primary flow diversion channels 134. The multiple secondary flow diversion channels 135 extend along the first direction and are located in the middle of the plate body 1 in the second direction. Alternatively, the multi-stage flow diversion channel may also include a tertiary flow diversion channel or a quaternary flow diversion channel, such as multiple secondary flow diversion channels 135 are connected to the liquid inlet 111 through a tertiary flow diversion channel, or multiple tertiary flow diversion channels are connected to the liquid inlet 111 through a quaternary flow diversion channel.

[0068] For example, Figure 2-Figure 4 As shown, the width of each position in the cooling channel 13 is the same, one primary branch channel 134 corresponds to three first channels 131, one secondary branch channel 135 corresponds to two primary branch channels 134, there are three secondary branch channels 135, and there are three corresponding liquid inlet holes 111 which are arranged at intervals along the second direction.

[0069] It should be noted that the flow rate of each flow path can be flexibly distributed by designing the cross-sectional size of each liquid inlet hole 111 .

[0070] In some embodiments, Figure 2 and Figure 3 As shown, the confluence flow channel includes a primary confluence flow channel 136 and a multi-stage confluence flow channel, there are at least two primary confluence flow channels 136, and each primary confluence flow channel 136 is connected to at least two third flow paths 133. The multi-stage confluence flow channel is connected to all primary confluence flow channels 136, the multi-stage confluence flow channel with the highest number of stages is located in the middle of the plate body 1 in the second direction and is connected to the liquid outlet 112, and multiple primary confluence flow channels 136 are symmetrically distributed on both sides of the multi-stage confluence flow channel in the second direction.

[0071] In the case where there are a large number of third flow paths 133, a larger number of third flow paths 133 can be connected simultaneously through a primary confluence channel 136, and a larger number of primary confluence channels 136 can be connected simultaneously through a multi-level confluence channel to form an appropriate number of liquid outlets 112. At the same time, the design of the multi-level confluence channel with the highest number of levels being located in the middle of the plate body 1 in the second direction allows multiple liquid outlets 112 to be gathered in a smaller area, thereby allowing the area of ​​the first plate 22 of the current collector 2 to be designed to be smaller, that is, the volume of the current collector 2 can be designed to be smaller, effectively reducing the manufacturing cost of the cooling plate. At the same time, the design of multiple primary confluence channels 136 symmetrically distributed on both sides of the multi-level confluence channel in the second direction reduces the difficulty of manufacturing the primary confluence channel 136.

[0072] Specifically, the primary confluence channels 136 all extend along the second direction, the multi-stage confluence channels include a secondary confluence channel 137 extending along the first direction, and the liquid outlet 112 is located at the center of the secondary confluence channel 137 along its length direction. Preferably, the liquid outlet 112 is located at the center of the upper plate 11 in the second direction and adjacent to the liquid inlet 111. Alternatively, the multi-stage confluence channels may also include a tertiary confluence channel or a quaternary confluence channel, such as a plurality of secondary confluence channels 137 are connected to the liquid outlet 112 through a tertiary confluence channel, or a plurality of tertiary confluence channels are connected to the liquid outlet 112 through a quaternary confluence channel.

[0073] For example, the secondary converging flow channel 137 has one U-shaped flow channel, the U-shaped opening direction is consistent with the first direction, and the liquid outlet 112 is located at the center position of the secondary converging flow channel 137 along its length direction.

[0074] In some embodiments, a plurality of mounting holes 113 are provided on the plate body 1, and the mounting holes 113 penetrate the plate body 1 along the thickness direction of the plate body 1. Cooling channels 13 are provided on both sides of the mounting holes 113 in the width direction of the plate body 1, and the cooling channels 13 include bending sections for avoiding the mounting holes 113.

[0075] The cooling plate is connected to the battery box of the battery pack through a threaded member passing through the mounting hole 113, so that the cooling plate can be easily assembled and disassembled from the battery box, and the connection strength between the cooling plate and the battery box is high. The cooling channel 13 is designed with a bent section to avoid the mounting hole 113, ensuring that the design of the mounting hole 113 does not affect the distribution density of other parts of the cooling channel 13, so as to ensure that the cooling plate has better cooling efficiency.

[0076] Specifically, Figure 2 As shown, the mounting holes 113 penetrate the upper plate 11 and the lower plate 12 of the plate body 1. There are three mounting holes 113 and they are located in the middle of the plate body 1 in the length direction of the plate body 1, and the three mounting holes 113 are arranged at intervals along the width direction of the plate body 1.

[0077] The battery pack according to an embodiment of the present application includes a cooling plate as described in any of the above embodiments.

[0078] The technical advantages of the battery pack according to the embodiment of the present application are the same as the technical advantages of the cooling plate in the above-mentioned embodiment, and will not be repeated here.

[0079] The vehicle according to the embodiment of the present application includes the battery pack as described in the above embodiment.

[0080] The technical advantages of the vehicle according to the embodiment of the present application are the same as the technical advantages of the battery pack in the above-mentioned embodiment, which will not be repeated here.

[0081] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0082] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0083] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0084] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0085] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0086] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present application. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present application.

Claims

1. A cooling plate, characterized in that: include: A plate body, wherein a cooling channel is disposed in the plate body, and the plate body has a liquid inlet hole and a liquid outlet hole communicated with the cooling channel, and the liquid inlet hole and / or the liquid outlet hole are at least two; An adapter body, wherein a first flow channel and a second flow channel are arranged in the adapter body, the adapter body has a total liquid inlet hole connected to the first flow channel and a total liquid outlet hole connected to the second flow channel, the first flow channel is connected to all the liquid inlet holes, and the second flow channel is connected to all the liquid outlet holes.

2. The cooling plate according to claim 1, characterized in that The plate body comprises an upper plate and a lower plate, wherein the upper plate and the lower plate are fixedly connected to each other, the upper plate and the lower plate are enclosed to form the cooling channel, and the upper plate is provided with the liquid inlet hole and the liquid outlet hole.

3. The cooling plate according to claim 1, characterized in that The cooling plate also includes a current collector, which is connected between the plate body and the adapter body. A current collecting cavity is provided in the current collector. The current collector has a current collecting hole and a flow diversion hole connected to the current collecting cavity. The current collecting hole is connected to the first flow channel. There are at least two liquid inlet holes, and the flow diversion holes are connected to the liquid inlet holes in a one-to-one correspondence.

4. The cooling plate according to claim 3, characterized in that The current collector includes a first plate and a second plate opposite to each other along the thickness direction of the plate body, the first plate and the second plate are fixedly connected and enclosed to form the current collecting cavity, the first plate is provided with the diversion hole, the second plate is provided with the current collecting hole, the first plate is connected to the plate body, and the second plate is connected to the adapter.

5. The cooling plate according to claim 4, characterized in that A surface of the first plate facing away from the second plate is provided with positioning sleeves corresponding to the diversion holes one by one, the positioning sleeves are arranged around the corresponding diversion holes, and the positioning sleeves are plugged and fitted in the corresponding liquid inlet holes.

6. The cooling plate according to claim 3, characterized in that The axial direction of the total liquid inlet hole forms an angle with the axial direction of the liquid inlet hole, and the axial direction of the total liquid outlet hole forms an angle with the axial direction of the liquid outlet hole.

7. The cooling plate according to claim 6, characterized in that The adapter body further comprises a first opening communicating with the first flow channel and a third opening communicating with the second flow channel, the first opening communicating with the liquid inlet, and the third opening communicating with the liquid outlet; The axial directions of the first opening and the third opening are consistent, the axial directions of the total liquid inlet and the total liquid outlet are consistent, and the axial direction of the first opening is perpendicular to the axial direction of the total liquid inlet.

8. The cooling plate according to claim 1, characterized in that The cooling channel includes a diverter channel, a converging channel and a plurality of direct cooling channels. The diverter channel corresponds one-to-one to and is connected with the liquid inlet hole, the diverter channel is connected with at least two of the direct cooling channels, the converging channel corresponds one-to-one to and is connected with the liquid outlet hole, and the converging channel is connected with at least two of the direct cooling channels.

9. The cooling plate according to claim 8, characterized in that Each of the direct cooling channels comprises a first flow path, a second flow path and a third flow path connected in sequence, the first flow path and the third flow path both extend along a first direction, the second flow path extends along a second direction, and the first direction forms an angle with the second direction; The flow-dividing channel includes at least one primary flow-dividing channel, each of the primary flow-dividing channel is communicated with a plurality of the first flow paths, and the converging channel is communicated with a plurality of the third flow paths.

10. The cooling plate according to claim 9, characterized in that There are a plurality of primary flow diversion channels, and the flow diversion channels further include at least one multi-stage flow diversion channel, and the multi-stage flow diversion channel is connected with all the primary flow diversion channels; The multi-stage flow diversion channel with the highest number of stages is located in the middle of the plate body in the second direction and is connected to the liquid inlet hole, and the plurality of first-stage flow diversion channels are symmetrically distributed on both sides of the multi-stage flow diversion channel in the second direction.

11. The cooling plate according to claim 9, characterized in that The confluence flow channel comprises: a primary converging flow channel, wherein there are at least two primary converging flow channels, each of which is connected to at least two of the third flow paths; and A multi-level confluence flow channel, wherein the multi-level confluence flow channel is connected to all the first-level confluence flow channels, the multi-level confluence flow channel with the highest level is located in the middle of the plate body in the second direction and is connected to the liquid outlet, and multiple first-level confluence flow channels are symmetrically distributed on both sides of the multi-level confluence flow channel in the second direction.

12. The cooling plate according to any one of claims 1 to 11, characterized in that: The plate body is provided with a plurality of mounting holes, the mounting holes penetrate the plate body along the thickness direction of the plate body, the mounting holes are provided with cooling channels on both sides of the plate body in the width direction, and the cooling channels include bending sections for avoiding the mounting holes.

13. A battery pack, characterized in that: Comprising a cooling plate as described in any one of claims 1-12.

14. A vehicle, characterized in that: Comprising the battery pack as claimed in claim 13.

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