Water cooling plate, battery pack and vehicle

Abstract

The utility model relates to a water cooling plate, a battery pack and a vehicle, the water cooling plate is provided with a cooling cavity, the cooling cavity is used for allowing a cooling medium to flow through, the cooling cavity is provided with a strong heat exchange area and a weak heat exchange area, the strong heat exchange area is used for being arranged corresponding to an area with large heat productivity, and the weak heat exchange area is used for being arranged corresponding to an area with small heat productivity. And turbulent flow bulges are arranged in the strong heat exchange area. According to the water cooling plate disclosed by the invention, the strong heat exchange area corresponds to the area with high heat productivity, and the weak heat exchange area corresponds to the area with low heat productivity, so that the cooling effect of the area with high heat productivity can be improved, the temperature of the area with high heat productivity is prevented from being relatively high, and the cooling effect of the water cooling plate is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of power batteries, in particular to a water cooling plate, a battery pack and a vehicle. BACKGROUND

[0002] In order to achieve cooling and heat dissipation of the heat generating components, a water cooling plate is usually arranged beside the heat generating components to achieve cooling and heat dissipation of the heat generating components. In the related art, the cooling effect of the water cooling plate is poor, and how to improve the cooling effect of the water cooling plate is a technical problem to be solved at present. CONTENT OF THE UTILITY MODEL

[0003] The present disclosure provides a water cooling plate to improve the cooling effect of the water cooling plate.

[0004] The water cooling plate of the present disclosure is provided with a cooling cavity for cooling medium to flow through, the cooling cavity is provided with a strong heat exchange area and a weak heat exchange area, the strong heat exchange area is arranged corresponding to a region with large heat generation, the weak heat exchange area is arranged corresponding to a region with small heat generation, and the strong heat exchange area is provided with a turbulence protrusion.

[0005] Optionally, the strong heat exchange area is provided with a strong heat exchange flow channel, the turbulence protrusion is arranged in the strong heat exchange flow channel, and the weak heat exchange area is provided with a weak heat exchange flow channel.

[0006] Optionally, the water cooling plate is provided with an inlet and an outlet, the inlet of the strong heat exchange flow channel communicates with the inlet, the outlet of the strong heat exchange flow channel communicates with the inlet of the weak heat exchange flow channel, and the outlet of the weak heat exchange flow channel communicates with the outlet.

[0007] Optionally, the number of the strong heat exchange flow channels and the weak heat exchange flow channels is multiple, the inlets of the multiple strong heat exchange flow channels all communicate with the inlet, and the outlets of the multiple weak heat exchange flow channels all communicate with the outlet.

[0008] Optionally, the strong heat exchange flow channel and the weak heat exchange flow channel have the same extension direction, and the strong heat exchange flow channel and the weak heat exchange flow channel are arranged side by side.

[0009] Optionally, a plurality of groups of the turbulence protrusions are arranged in the strong heat exchange flow channel, the plurality of groups of the turbulence protrusions are arranged at intervals along the extension direction of the strong heat exchange flow channel, and a plurality of the turbulence protrusions in the same group are arranged at intervals along the width direction of the strong heat exchange flow channel.

[0010] Optionally, at least one of the turbulence protrusions in one group of the turbulence protrusions is located between two adjacent turbulence protrusions in another group of the turbulence protrusions.

[0011] Optionally, the number of any two adjacent groups of the turbulence protrusions is different.

[0012] Optionally, the plurality of groups of the spoiler protrusions comprises a first group of spoiler protrusions and a second group of spoiler protrusions, the first group of spoiler protrusions and the second group of spoiler protrusions are arranged alternately along a first direction, and the number difference between the first group of spoiler protrusions and the second group of spoiler protrusions is 1.

[0013] The present disclosure also provides a battery pack.

[0014] The battery pack of the present disclosure comprises a water-cooling plate and a heat-generating component, the water-cooling plate is any one of the water-cooling plates described above; the heat-generating component has a first heat-generating area and a second heat-generating area, the heat-generating amount of the first heat-generating area is greater than that of the second heat-generating area, the strong heat-exchange area is arranged corresponding to the first heat-generating area, and the weak heat-exchange area is arranged corresponding to the second heat-generating area.

[0015] Optionally, the heat-generating component comprises a battery monomer, the battery monomer comprises a battery body and a battery pole, the battery pole corresponds to the strong heat-exchange area, and the battery body corresponds to the weak heat-exchange area.

[0016] Optionally, the battery pack comprises a plurality of battery monomers, the heat-generating component comprises a busbar, at least two battery monomers are electrically connected to the busbar, the busbar corresponds to the strong heat-exchange area, and the battery monomers correspond to the weak heat-exchange area.

[0017] The present disclosure also provides a vehicle.

[0018] The vehicle of the present disclosure comprises the battery pack of any one of the above.

[0019] The water-cooling plate of the present disclosure sets the strong heat-exchange area and the weak heat-exchange area in the cooling cavity and sets the spoiler protrusion in the strong heat-exchange area, so that when the cooling medium flows through the strong heat-exchange area, the spoiler protrusion enhances the disturbance to the cooling medium, the flow rate of the cooling medium changes, the flow duration of the cooling medium in the strong heat-exchange area increases, and the cooling effect of the strong heat-exchange area improves. By setting the strong heat-exchange area corresponding to the area with large heat-generating amount and setting the weak heat-exchange area corresponding to the area with small heat-generating amount, the cooling effect of the area with large heat-generating amount can be improved, and the temperature of the area with large heat-generating amount can be prevented from being high, thereby improving the cooling effect of the water-cooling plate. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic diagram of the internal structure of the water-cooling plate of an embodiment of the present disclosure.

[0021] Figure 2 is a partial enlarged view of Figure 1 .

[0022] Figure 3 is an exploded view of the battery pack of an embodiment of the present disclosure.

[0023] Figure 4 is a sectional view of a battery pack of one embodiment of the present disclosure.

[0024] Figure 5 is Figure 4 is an enlarged view of A in FIG.

[0025] Figure 6 is Figure 5 is a schematic view of an internal structure of the water-cooling plate.

[0026] Figure 7 is Figure 4 is an enlarged view of B in FIG.

[0027] Figure 8 is Figure 7 is a schematic view of an internal structure of the water-cooling plate.

[0028] Figure 9 is a positional relationship diagram of a battery cell and a water-cooling plate of a battery pack of one embodiment of the present disclosure.

[0029] Figure 10 is an exploded view of a battery pack of another embodiment of the present disclosure.

[0030] Figure 11 is a positional relationship diagram of a battery cell and a water-cooling plate of a battery pack of another embodiment of the present disclosure.

[0031] Reference Signs:

[0032] 100, battery pack;

[0033] 1, water-cooling plate; 11, strong heat exchange region; 1101, first strong heat exchange region; 1102, second strong heat exchange region; 111, spoiler; 1111, front-end spoiler; 112, strong heat exchange flow channel; 1121, first pole flow channel; 1122, second pole flow channel; 113, inlet flow channel; 1131, inclined section; 1132, straight section; 12, weak heat exchange region; 121, weak heat exchange flow channel;

[0034] 2, battery cell; 21, first heat generation region; 211, battery pole; 2111, first pole; 2112, second pole; 22, second heat generation region; 221, battery main body;

[0035] 3, box body;

[0036] 4, bottom guard plate;

[0037] 5, upper cover;

[0038] 6, heat-conducting adhesive;

[0039] 7, first sealing member;

[0040] 8. The second seal. DETAILED DESCRIPTION

[0041] Embodiments of the present disclosure are described in detail below with reference to examples illustrated in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0042] As shown in FIG. 1, the water-cooled plate 1 of the embodiment of the present disclosure is provided with a cooling cavity for cooling medium to flow through. The cooling cavity is provided with a strong heat exchange area 11 and a weak heat exchange area 12, the strong heat exchange area 11 is arranged corresponding to a region with large heat generation, and the weak heat exchange area 12 is arranged corresponding to a region with small heat generation, and the strong heat exchange area 11 is provided with a turbulence protrusion 111. Figure 1 Figure 2 As shown in FIG. 1, the water-cooled plate 1 of the embodiment of the present disclosure is provided with a cooling cavity for cooling medium to flow through. The cooling cavity is provided with a strong heat exchange area 11 and a weak heat exchange area 12, the strong heat exchange area 11 is arranged corresponding to a region with large heat generation, and the weak heat exchange area 12 is arranged corresponding to a region with small heat generation, and the strong heat exchange area 11 is provided with a turbulence protrusion 111.

[0043] Wherein, the heat generation of the region with large heat generation is Q1, and the heat generation of the region with small heat generation is Q2 in a preset time period, and Q1 is greater than Q2. The temperature of the region with large heat generation is higher than that of the region with small heat generation. Effective heat dissipation of the region with large heat generation can avoid high temperature of the region with large heat generation.

[0044] Wherein, the cooling medium can be water, oil, air, etc. The water-cooled plate 1 can be used to cool and dissipate heat of the region where the battery monomer, the battery power distribution system (Battery energy Distribution Unit, BDU) or the vehicle-mounted power supply system (charger converter unit, CCU) is located. The region with large heat generation of the battery monomer can be the region where the battery pole is located, and the region with small heat generation of the battery monomer can be the region of the battery monomer except the battery pole. The region with large heat generation of the BDU can be the region where the electronic element is located, and the region with small heat generation of the BDU can be the region of the BDU except the electronic element. The region with large heat generation of the CCU can be the region where the power module is located, and the region with small heat generation of the CCU can be the region of the CCU except the power module.

[0045] The water-cooled plate 1 of the embodiment of the present disclosure is provided with the strong heat exchange area 11 and the weak heat exchange area 12 in the cooling cavity, and the turbulence protrusion 111 is arranged in the strong heat exchange area 11. When the cooling medium flows through the strong heat exchange area 11, the turbulence protrusion 111 enhances the disturbance to the cooling medium, so that the flow rate of the cooling medium changes, thereby increasing the flow duration of the cooling medium in the strong heat exchange area 11, and improving the cooling effect of the strong heat exchange area 11. By arranging the strong heat exchange area 11 corresponding to the region with large heat generation and arranging the weak heat exchange area 12 corresponding to the region with small heat generation, the cooling effect of the region with large heat generation can be improved, and the temperature of the region with large heat generation can be avoided to be high, thereby improving the cooling effect of the water-cooled plate 1.​

[0046] For example, when the heat generating component is a battery monomer, the heat generating amount of the battery pole of the battery monomer is large, and the strong heat exchange area 11 can be arranged corresponding to the battery pole of the battery monomer to cool and dissipate heat of the battery pole, so as to shorten the charging and discharging time of the battery monomer and improve the safety of the battery monomer.

[0047] In some embodiments, as shown in Figure 1 and Figure 2 The flow disturbance protrusion 111 is a flow disturbance column, and the extension direction of the flow disturbance column is consistent with the thickness direction of the water-cooling plate 1.

[0048] By setting the flow disturbance protrusion 111 as a flow disturbance column, the disturbance of the flow disturbance protrusion 111 to the cooling medium can be enhanced, the flow duration of the cooling medium in the strong heat exchange area 11 is further increased, the cooling effect of the strong heat exchange area 11 is improved, and the cooling effect of the water-cooling plate 1 is further improved.

[0049] Optionally, the cooling cavity comprises a first cavity wall and a second cavity wall arranged oppositely along the thickness direction of the water-cooling plate 1, and the two ends of the flow disturbance protrusion 111 are connected with the first cavity wall and the second cavity wall respectively.

[0050] By connecting the two ends of the flow disturbance protrusion 111 with the first cavity wall and the second cavity wall respectively, the two ends of the flow disturbance protrusion 111 extend to the first cavity wall and the second cavity wall of the flow disturbance cavity, so that the cooling medium flowing through the strong heat exchange area 11 must flow through the flow disturbance protrusion 111, the flow duration of the cooling medium in the strong heat exchange area 11 is further increased, the cooling effect of the strong heat exchange area 11 is improved, and the cooling effect of the water-cooling plate 1 is further improved.

[0051] Optionally, as shown in Figure 2 The strong heat exchange area 11 is provided with a strong heat exchange flow channel 112, the weak heat exchange area 12 is provided with a weak heat exchange flow channel 121, and the flow disturbance protrusion 111 is arranged in the strong heat exchange flow channel 112.

[0052] By arranging the strong heat exchange flow channel 112 in the strong heat exchange area 11 and the weak heat exchange flow channel 121 in the weak heat exchange area 12, the flow direction of the cooling medium in the strong heat exchange area 11 and the weak heat exchange area 12 can be controlled, so that the cooling medium flows along the preset path in the strong heat exchange area 11 and the weak heat exchange area 12, which is beneficial to improve the cooling effect of the water-cooling plate 1.

[0053] Optionally, the water-cooling plate 1 is provided with an inlet and an outlet, the inlet of the strong heat exchange flow channel 112 communicates with the inlet, the outlet of the strong heat exchange flow channel 112 communicates with the inlet of the weak heat exchange flow channel 121, and the outlet of the weak heat exchange flow channel 121 communicates with the outlet.

[0054] Through the above design of the liquid inlet, the liquid outlet, the strong heat exchange channel 112 and the weak heat exchange channel 121, the cooling medium entering from the liquid inlet first flows into the strong heat exchange channel 112, so as to realize cooling and heat dissipation of the region with large heat generation, and then flows into the weak heat exchange channel 121, so as to realize cooling and heat dissipation of the region with small heat generation, and then flows out from the liquid outlet.

[0055] In this way, the temperature of the cooling medium flowing through the strong heat exchange channel 112 is lower, so as to better realize cooling and heat dissipation of the region with large heat generation, and further improve the cooling effect of the water-cooled plate 1.

[0056] Optionally, as shown in Figure 1 and Figure 2 , the number of the strong heat exchange channel 112 and the weak heat exchange channel 121 is multiple, the inlets of the multiple strong heat exchange channels 112 are in communication with the liquid inlet, and the outlets of the multiple weak heat exchange channels 121 are in communication with the liquid outlet.

[0057] For example, the number of the strong heat exchange channel 112 is four, and the inlets of the four strong heat exchange channels 112 are in communication with the liquid inlet.

[0058] By setting the number of the strong heat exchange channel 112 and the weak heat exchange channel 121 as multiple, it is convenient to design the strong heat exchange channel 112 and the weak heat exchange channel 121 according to the cooling and heat exchange demand, and further improve the cooling effect of the water-cooled plate 1.

[0059] Optionally, as shown in Figure 1 and Figure 2 , the extension directions of the strong heat exchange channel 112 and the weak heat exchange channel 121 are the same, and the strong heat exchange channel 112 and the weak heat exchange channel 121 are arranged side by side. The liquid inlet is arranged on one side of the water-cooled plate 1 in the extension direction of the strong heat exchange channel 112, and the liquid outlet is arranged on one side of the water-cooled plate 1 in the extension direction of the strong heat exchange channel 112.

[0060] In order to make the technical scheme of the present disclosure easier to be understood, the technical scheme of the present disclosure is further described below with the extension direction of the strong heat exchange channel 112 being consistent with the left-right direction, and the width direction of the strong heat exchange channel 112 being consistent with the front-back direction as an example.

[0061] For example, as shown in Figure 1 and Figure 2 , the strong heat exchange channel 112 and the weak heat exchange channel 121 both extend along the front-back direction, and the strong heat exchange channel 112 and the weak heat exchange channel 121 are arranged side by side along the left-right direction. The liquid inlet and the liquid outlet are both arranged on the front side of the water-cooled plate 1.

[0062] Through the above design of the strong heat exchange flow channel 112, the weak heat exchange flow channel 121, the liquid inlet, and the liquid outlet, the layout of the strong heat exchange flow channel 112, the weak heat exchange flow channel 121, the liquid inlet, and the liquid outlet is relatively regular, facilitating the processing and manufacturing of the water-cooled plate 1.

[0063] Optionally, as shown in Figure 1 and Figure 2 , the strong heat exchange flow channel 112 is provided with a plurality of groups of turbulence protrusions 111, the plurality of groups of turbulence protrusions 111 are arranged at intervals along the extension direction of the strong heat exchange flow channel 112, and the plurality of turbulence protrusions 111 in the same group are arranged at intervals along the width direction of the strong heat exchange flow channel 112.

[0064] As shown in Figure 2 , through the above layout of the plurality of turbulence protrusions 111, when the cooling medium flows along the extension direction of the strong heat exchange flow channel 112, it will flow through the plurality of turbulence protrusions 111 in turn, enhancing the disturbance of the turbulence protrusions 111 to the cooling medium.

[0065] Through the above layout of the plurality of turbulence protrusions 111, the disturbance of the turbulence protrusions 111 to the cooling medium can be enhanced, the flow duration of the cooling medium in the strong heat exchange area 11 is further increased, the cooling effect of the strong heat exchange area 11 is improved, and the cooling effect of the water-cooled plate 1 is further improved.

[0066] Optionally, at least one turbulence protrusion 111 of one group of the adjacent two groups of turbulence protrusions 111 is located between the other group of adjacent two turbulence protrusions 111.

[0067] As shown in Figure 2 , through the above layout of the plurality of turbulence protrusions 111, the flow path of the cooling medium is generally S-shaped.

[0068] Through the above layout of the plurality of turbulence protrusions 111, the disturbance of the turbulence protrusions 111 to the cooling medium can be enhanced, the flow duration of the cooling medium in the strong heat exchange area 11 is further increased, the cooling effect of the strong heat exchange area 11 is improved, and the cooling effect of the water-cooled plate 1 is further improved.

[0069] For example, as shown in Figure 1 and Figure 2 , the strong heat exchange area 11 is provided with a plurality of groups of turbulence protrusions 111, the plurality of groups are arranged at intervals in the front-rear direction, and the plurality of turbulence protrusions 111 in the same group are arranged at intervals in the left-right direction. One turbulence protrusion 111 of one group of the adjacent two groups of turbulence protrusions 111 is located between the other group of adjacent two turbulence protrusions 111 in the left-right direction.

[0070] When the cooling medium flows in the front-to-rear direction, after flowing through any one of the spoiler protrusions 111, the cooling medium is divided into two parts by the spoiler protrusion 111, the part on the left side of the spoiler protrusion 111 flows to the left front direction, and the part on the right side of the spoiler protrusion 111 flows to the right front direction, thereby enhancing the disturbance of the spoiler protrusion 111 to the cooling medium.

[0071] Optionally, as shown in Figure 1 and Figure 2 , the number of any two adjacent groups of spoiler protrusions 111 is different.

[0072] For example, as shown in Figure 1 and Figure 2 , in any two adjacent groups of spoiler protrusions 111 in the front-to-rear direction, one group of spoiler protrusions 111 has two spoiler protrusions 111, which are respectively a first protrusion and a second protrusion; the other group of spoiler protrusions 111 has three spoiler protrusions 111, which are respectively a third protrusion, a fourth protrusion and a fifth protrusion. Among them, the first protrusion is arranged between the third protrusion and the fourth protrusion in the left-right direction, and the second protrusion is arranged between the fourth protrusion and the fifth protrusion in the left-right direction.

[0073] By setting the number of any two adjacent groups of spoiler protrusions 111 to be different, in the case that the number of spoiler protrusions 111 is small, by reasonably arranging the spoiler protrusions 111, the disturbance of the spoiler protrusions 111 to the cooling medium can be effectively enhanced, which is conducive to reducing the cost of the water-cooled plate 1.

[0074] Optionally, the plurality of groups of spoiler protrusions 111 include a first group of spoiler protrusions and a second group of spoiler protrusions, the first group of spoiler protrusions and the second group of spoiler protrusions are arranged alternately along the first direction, and the number difference between the first group of spoiler protrusions and the second group of spoiler protrusions is 1.

[0075] For example, as shown in Figure 1 and Figure 2 , the number of spoiler protrusions 111 in the first group of spoiler protrusions is two, the number of spoiler protrusions 111 in the second group of spoiler protrusions is three, and the first group of spoiler protrusions and the second group of spoiler protrusions are arranged in the front-to-rear direction.

[0076] By designing the first group of spoiler protrusions and the second group of spoiler protrusions as described above, in the case that the number of spoiler protrusions 111 is small, the disturbance of the spoiler protrusions 111 to the cooling medium can be effectively enhanced, which is conducive to reducing the cost of the water-cooled plate 1 while ensuring the cooling effect of the water-cooled plate 1.

[0077] Optionally, as shown in Figure 2 , the distance between any two adjacent spoiler protrusions 111 in the same group is a first preset value D1.

[0078] The first preset value can be designed according to needs. While ensuring that the disturbance protrusions 111 are easy to manufacture, by increasing the first preset value, the number of disturbance protrusions 111 can be reduced, and the structure of the water-cooled plate 1 can be simplified. By reducing the first preset value, the number of disturbance protrusions 111 can be increased, the disturbance of the disturbance protrusions 111 to the cooling medium can be enhanced, and the cooling effect of the water-cooled plate 1 can be improved.

[0079] The distance between any two adjacent disturbance protrusions 111 in the same group is the first preset value. The distance between any two adjacent disturbance protrusions 111 in the same group is the same. This not only makes the cooling effect of the strong heat exchange area 11 more uniform, but also facilitates the manufacturing of multiple disturbance protrusions 111, which is conducive to reducing the cost of the water-cooled plate 1.

[0080] Optionally, as shown in Figure 2 The distance between any two adjacent groups of disturbance protrusions 111 in the same strong heat exchange area 11 is the second preset value D2.

[0081] The second preset value can be designed according to needs. While ensuring that the disturbance protrusions 111 are easy to manufacture, by increasing the second preset value, the number of disturbance protrusions 111 can be reduced, and the structure of the water-cooled plate 1 can be simplified. By reducing the second preset value, the number of disturbance protrusions 111 can be increased, the disturbance of the disturbance protrusions 111 to the cooling medium can be enhanced, and the cooling effect of the water-cooled plate 1 can be improved.

[0082] The distance between any two adjacent groups of disturbance protrusions 111 in the same strong heat exchange area 11 is the second preset value D2. The distance between any two adjacent groups of disturbance protrusions 111 in the same strong heat exchange area 11 is the same. This not only makes the cooling effect of the strong heat exchange area 11 more uniform, but also facilitates the manufacturing of multiple disturbance protrusions 111, which is conducive to reducing the cost of the water-cooled plate 1.

[0083] Optionally, as shown in Figure 1 and Figure 2 The disturbance protrusions 111 are cylindrical.

[0084] The disturbance protrusions 111 are cylindrical. The outer circumferential surface of the disturbance protrusions 111 is a cylindrical surface. This can reduce the flow resistance of the disturbance protrusions 111 to the cooling medium, increase the flow speed of the cooling medium in the strong heat exchange area 11, and further improve the cooling effect of the water-cooled plate 1.

[0085] Optionally, as shown in Figure 2 The diameter R of the disturbance protrusions 111 is 5mm-10mm.

[0086] The experimental research shows that when the diameter R of the spoiler protrusion 111 is less than 5 mm, it is difficult to manufacture the spoiler protrusion 111, and when the diameter R of the spoiler protrusion 111 is greater than 10 mm, the number of the spoiler protrusions 111 in the same strong heat exchange area 11 is too small, the spoiler protrusion 111 has weak disturbance to the cooling medium, and it is not conducive to improving the cooling effect of the strong heat exchange area 11.

[0087] By setting the diameter of the spoiler protrusion 111 to 5 mm to 10 mm, not only the manufacturing of the spoiler protrusion 111 is facilitated, but also the disturbance effect of the spoiler protrusion 111 to the cooling medium is ensured, and the cooling effect of the strong heat exchange area 11 is ensured.

[0088] Optionally, the minimum spacing D2 between the adjacent two spoiler protrusions 111 is 5 mm to 10 mm.

[0089] The experimental research shows that when the minimum spacing between the adjacent two spoiler protrusions 111 is less than 5 mm, it is difficult to manufacture the spoiler protrusion 111, and when the minimum spacing between the adjacent two spoiler protrusions 111 is greater than 10 mm, the number of the spoiler protrusions 111 in the same strong heat exchange area 11 is too small, the spoiler protrusion 111 has weak disturbance to the cooling medium, and it is not conducive to improving the cooling effect of the strong heat exchange area 11.

[0090] By setting the minimum spacing between the adjacent two spoiler protrusions 111 to 5 mm to 10 mm, not only the manufacturing of the spoiler protrusion 111 is facilitated, but also the disturbance effect of the spoiler protrusion 111 to the cooling medium is ensured, and the cooling effect of the strong heat exchange area 11 is ensured.

[0091] As shown in FIG. 1, Figures 3 to 11 The battery pack 100 of the embodiment of the present disclosure includes a water-cooled plate 1 and a heat generating component, and the water-cooled plate 1 is the water-cooled plate 1 described in any of the above embodiments. The heat generating component has a first heat generating area 21 and a second heat generating area 22, and the heat generation of the first heat generating area 21 is greater than that of the second heat generating area 22. The strong heat exchange area 11 is arranged corresponding to the first heat generating area 21, and the weak heat exchange area 12 is arranged corresponding to the second heat generating area 22.

[0092] For example, the water-cooled plate 1 is in contact with the heat generating component, so as to achieve cooling and heat dissipation of different areas of the heat generating component.

[0093] The battery pack 100 of the embodiment of the present disclosure, by arranging the strong heat exchange area 11 corresponding to the strong heat exchange area 11 and arranging the weak heat exchange area 12 corresponding to the weak heat exchange area 12, can improve the cooling effect of the area with large heat generation (the strong heat exchange area 11), avoid high temperature of the area with large heat generation, and thus avoid high local temperature inside the battery pack 100, and improve the heat exchange performance of the battery pack 100.

[0094] As shown in FIG. 1, Figures 3 to 11As shown in the figure, the battery pack 100 comprises a box 3, and the water-cooling plate 1 and the heat-generating component are arranged in the box 3.

[0095] In some embodiments, as shown in the figure, the battery pack 100 comprises a battery monomer 2, and the battery monomer 2 comprises a battery body 221 and a battery pole 211 corresponding to the strong heat exchange area 11, and the battery body 221 corresponds to the weak heat exchange area 12. Figures 3 to 8 As shown in the figure, the battery pack 100 comprises a battery monomer 2, and the battery monomer 2 comprises a battery body 221 and a battery pole 211 corresponding to the strong heat exchange area 11, and the battery body 221 corresponds to the weak heat exchange area 12.

[0096] By corresponding the battery pole 211 to the strong heat exchange area 11, the cooling and heat dissipation of the battery pole 211 are realized by using the strong heat exchange area 11, so as to avoid the high temperature of the battery pole 211, thereby shortening the charging and discharging time of the battery pack 100 and improving the safety of the battery pack 100.

[0097] As shown in the figure, Figure 2 and Figure 9 As shown in the figure, the number of the strong heat exchange areas 11 is multiple, the multiple strong heat exchange areas 11 comprise a first strong heat exchange area 1101 and a second strong heat exchange area 1102, and the weak heat exchange area 12 is arranged between the first strong heat exchange area 1101 and the second strong heat exchange area 1102 in the extension direction of the strong heat exchange flow channel 112. As shown in the figure, Figure 9 The battery pole 211 comprises a first pole 2111 and a second pole 2112, and the first pole 2111 and the second pole 2112 are arranged on opposite sides of the battery body 221. The battery body 221 is arranged corresponding to the weak heat exchange area 12, the first pole 2111 is arranged corresponding to the first strong heat exchange area 1101, and the second pole 2112 is arranged corresponding to the second strong heat exchange area 1102.

[0098] In order to make the technical scheme of the present disclosure easier to be understood, the thickness direction of the water-cooling plate 1 is taken as an example, which is consistent with the up-down direction, to further describe the technical scheme of the present disclosure. As shown in the figure, Figures 1 to 5 , Figure 7 As shown in the figure.

[0099] For example, as shown in the figure, Figures 1 to 5 , Figure 7 The height direction of the battery monomer 2 is consistent with the up-down direction, and the length direction of the battery monomer 2 is consistent with the left-right direction. The water-cooling plate 1 is arranged on the lower side of the battery monomer 2, the first pole 2111 is arranged on the left side of the battery body 221, the second pole 2112 is arranged on the right side of the battery body 221, the first strong heat exchange area 1101 is arranged on the left side of the weak heat exchange area 12, and the second strong heat exchange area 1102 is arranged on the right side of the weak heat exchange area 12. The battery monomer 2 can be a blade battery.

[0100] By designing the battery monomer 2 and the water-cooled plate 1 as described above, the first strong heat exchange area 1101 is close to the first pole 2111, and the second strong heat exchange area 1102 is close to the second pole 2112, which can improve the cooling and heat exchange effect of the battery pole 211, further shorten the charging and discharging time of the battery pack 100, and improve the safety of the battery pack 100.

[0101] Optionally, as shown in Figure 2 、 Figure 3 、 Figure 9 and Figure 11 , at least part of the flow spoiler 111 of the first strong heat exchange area 1101 is arranged side by side with at least part of the flow spoiler 111 of the second strong heat exchange area 1102.

[0102] It can be understood that the heat generation of the first pole 2111 and the second pole 2112 is equivalent, and in order to maintain the temperature uniformity of the battery monomer 2, it is necessary to make the cooling effect of the first strong heat exchange area 1101 and the second strong heat exchange area 1102 equivalent.

[0103] For example, as shown in Figure 9 , the first pole 2111 and the second pole 2112 are arranged side by side along the left-right direction, and the flow spoiler 111 of the first strong heat exchange area 1101 and the flow spoiler 111 of the second strong heat exchange area 1102 are arranged side by side along the left-right direction. The cooling effect of the first strong heat exchange area 1101 on the first pole 2111 is equivalent to the cooling effect of the second strong heat exchange area 1102 on the second pole 2112, so that the temperature of the battery monomer 2 is relatively uniform in the left-right direction.

[0104] By arranging at least part of the flow spoiler 111 of the first strong heat exchange area 1101 side by side with at least part of the flow spoiler 111 of the second strong heat exchange area 1102, the temperature uniformity of the battery monomer 2 can be improved, thereby improving the temperature uniformity of the battery pack 100.

[0105] Optionally, as shown in Figure 2 , the flow spoiler 111 includes a front-end flow spoiler 1111, and the front-end flow spoiler 1111 is arranged at the inlet of the strong heat exchange flow channel 112. As shown in Figure 9 , the strong heat exchange flow channel 112 of the first strong heat exchange area 1101 is a first pole flow channel 1121, and the strong heat exchange flow channel 112 of the second strong heat exchange area 1102 is a second pole flow channel 1122. In the extension direction of the strong heat exchange flow channel 112, the inlet of the second pole flow channel 1122 is closer to the liquid inlet than the inlet of the first pole flow channel 1121. In the extension direction of the strong heat exchange flow channel 112, the front-end flow spoiler 1111 of the first pole flow channel 1121 is closer to the liquid inlet than the front-end flow spoiler 1111 of the second pole flow channel 1122.

[0106] Understandably, since the inlet of the second electrode channel 1122 is closer to the liquid inlet than the inlet of the first electrode channel 1121, the temperature of the cooling medium flowing to the inlet of the second electrode channel 1122 is higher than the temperature of the cooling medium flowing to the inlet of the first electrode channel 1121. This results in a poorer cooling effect on the first electrode 2111 at the inlet of the first electrode channel 1121, while a better cooling effect on the second electrode 2112 at the inlet of the second electrode channel 1122, leading to a larger temperature difference between the first electrode 2111 and the second electrode 2112 of the same battery cell 2.

[0107] By positioning the front-end turbulence protrusion 1111 of the first electrode channel 1121 closer to the liquid inlet than the front-end turbulence protrusion 1111 of the second electrode channel 1122 along the extension direction of the high-heat-exchange flow channel 112, the heat exchange effect at the inlet of the first electrode channel 1121 can be increased, thereby improving the cooling effect of the inlet of the first electrode channel 1121 on the first electrode 2111. This results in a smaller temperature difference between the first electrode 2111 and the second electrode 2112 of the same battery cell 2, improving the temperature uniformity of the battery cell 2, and further enhancing the temperature uniformity of the battery pack 100.

[0108] like Figure 1 As shown, the water-cooled plate 1 is provided with an inlet channel 113, which is located between the liquid inlet and the high-heat exchange channel 112. The inlet of the inlet channel 113 is connected to the liquid inlet, and the outlet of the inlet channel 113 is connected to the inlet of the high-heat exchange channel 112.

[0109] By setting the inlet flow channel 113, it is convenient to connect the strong heat exchange flow channel 112 with the liquid inlet, thereby facilitating the design and manufacturing of the strong heat exchange flow channel 112 and helping to reduce the manufacturing difficulty of the water-cooled plate 1.

[0110] There are multiple inlet channels 113, and the outlets of the multiple inlet channels 113 are arranged at intervals along the extension direction of the strong heat exchange channel 112. The front-end turbulence protrusion 1111 is set between the outlets of two adjacent inlet channels 113 in the extension direction of the strong heat exchange channel 112.

[0111] For example, for the same strong heat exchange zone 11, there are three inlet channels 113 and two front-end turbulence protrusions 1111. In the left-right direction, the inlet of the inlet channel 113 and the front-end turbulence protrusion 1111 are arranged alternately.

[0112] It is understandable that when the cooling medium flows through the turbulence protrusion 111 in the direction directly opposite to it, it will be blocked and divided into two streams by the turbulence protrusion 111, increasing the flow resistance of the cooling medium.

[0113] The front-end spoiler 1111 is arranged between the outlets of two adjacent inlet flow channels 113 in the direction of the strong heat exchange flow channel 112, so that the cooling medium flowing out of the inlet flow channel 113 can better bypass the front-end spoiler 1111 and flow into the strong heat exchange flow channel 112, reducing the flow resistance of the cooling medium to the front-end spoiler 1111.

[0114] Optionally, as shown in Figure 2 The inlet flow channel 113 includes an inclined section 1131 and a straight section 1132, the straight section 1132 is arranged on the side of the inclined section 1131 close to the strong heat exchange flow channel 112 in the extension direction of the strong heat exchange flow channel 112, the extension direction of the straight section 1132 is parallel to the width direction of the strong heat exchange flow channel 112, and the extension direction of the inclined section 1131 intersects the width direction of the strong heat exchange flow channel 112.

[0115] For example, as shown in Figure 2 The strong heat exchange flow channel 112 extends in the front-rear direction, the liquid inlet is arranged on the right front side of the strong heat exchange flow channel 112, the inclined section 1131 gradually inclines to the left in the front-rear direction, and the straight section 1132 is parallel to the front-rear direction.

[0116] By arranging the extension direction of the inclined section 1131 to intersect the width direction of the strong heat exchange flow channel 112, the cooling medium at the liquid inlet can be conveniently guided into the strong heat exchange flow channel 112. By arranging the extension direction of the straight section 1132 to be parallel to the width direction of the strong heat exchange flow channel 112, when the cooling medium flows to the straight section 1132, the straight section 1132 can guide the cooling medium, so that the cooling medium flows out of the inlet flow channel 113 in a direction parallel to the width direction of the strong heat exchange flow channel 112, and flows into the strong heat exchange flow channel 112 in a direction parallel to the width direction of the strong heat exchange flow channel 112.

[0117] As shown in Figure 9 At least a part of the strong heat exchange area 11 in the direction of the battery monomer 2 covers the battery pole 211. In other words, a part of the strong heat exchange area 11 in the direction of the battery monomer 2 covers the battery pole 211, and another part of the strong heat exchange area 11 in the direction of the battery monomer 2 does not cover the battery pole 211; or the whole strong heat exchange area 11 in the direction of the battery monomer 2 covers the battery pole 211.

[0118] By arranging at least a part of the strong heat exchange area 11 in the direction of the battery monomer 2 to cover the battery pole 211, the battery pole 211 is arranged opposite to the strong heat exchange area 11, so that the cooling effect of the cooling medium in the strong heat exchange area 11 on the battery pole 211 can be improved, the temperature of the battery pole 211 is further reduced, the charging and discharging time of the battery pack 100 is further shortened, and the safety of the battery pack 100 is improved.

[0119] For example, the water-cooled plate 1 is disposed on the lower side of the battery cell 2, and the downward projection of the battery terminal 211 is located within the strong heat exchange zone 11. By setting the downward projection of the battery terminal 211 towards the water-cooled plate 1 to be located within the strong heat exchange zone 11, the battery terminal 211 is positioned directly opposite the strong heat exchange zone 11 in the vertical direction.

[0120] like Figure 9 As shown, the orthographic projection of the battery terminal 211 in the direction toward the battery cell 2 covers a portion of the strong heat exchange zone 11, and the orthographic projection of a portion of the battery body 221 in the direction toward the battery cell 2 covers another portion of the strong heat exchange zone 11.

[0121] It is understandable that when the battery cell 2 is working, the temperature of the battery terminal 211 is relatively high, and the temperature of the battery terminal 211 will be transferred to the battery body 221, resulting in the part of the battery body 221 near the battery terminal 211 having a high temperature.

[0122] By projecting a portion of the battery body 221 onto another portion of the high-heat-exchange zone 11 in the direction towards the battery cell 2, the portion of the battery body 221 near the battery terminal 211 is positioned directly opposite the high-heat-exchange zone 11. This improves the cooling effect of the cooling medium within the high-heat-exchange zone 11 on the portion of the battery body 221 near the battery terminal 211, further reducing the temperature of the battery terminal 211, further shortening the charge / discharge time of the battery pack 100, and improving the safety of the battery pack 100. Optionally, the width L of the high-heat-exchange zone 11 is 80mm to 120mm.

[0123] For example, such as Figure 9 As shown, the width of the strong heat exchange zone 11 is consistent with the left and right direction, and the dimension L of the strong heat exchange zone 11 in the left and right direction is 80mm to 120mm.

[0124] Understandably, the setting of the turbulence protrusion 111 will undoubtedly increase the cost of the water-cooled plate 1. While ensuring the cooling effect on the battery cell 2, the range of the strong heat exchange zone 11 should be minimized as much as possible.

[0125] By setting the width of the strong heat exchange zone 11 to 80mm to 120mm, the cooling effect of the battery cell 2 can be guaranteed even with a small size of the strong heat exchange zone 11. This reduces the cost of the battery pack 100 while shortening the charging and discharging time of the battery pack 100 and improving the safety of the battery pack 100.

[0126] Optionally, such as Figures 3 to 5 , Figure 7As shown, the water-cooled plate 1 is arranged at the bottom of the battery monomer 2 in the height direction of the battery monomer 2. The battery pole 211 includes a first pole 2111 and a second pole 2112, which are respectively arranged at opposite sides of the battery main body 221 in the length direction of the battery monomer 2. The strong heat exchange area 11 is arranged at opposite sides of the weak heat exchange area 12 in the length direction of the battery monomer 2, so as to correspond to the areas where the first pole 2111 and the second pole 2112 are respectively arranged. The height direction of the battery monomer 2 is parallel to the thickness direction of the water-cooled plate 1, and the length direction of the battery monomer 2 is perpendicular to the thickness direction of the water-cooled plate 1. The battery monomer 2 can be a blade battery monomer.

[0127] As shown in Figures 3 to 5 , Figure 7 , the height direction of the battery monomer 2 is consistent with the up-down direction, and the length direction of the battery monomer 2 is consistent with the left-right direction. The water-cooled plate 1 is arranged at the lower side of the battery monomer 2, the first pole 2111 is arranged at the left side of the battery main body 221, the second pole 2112 is arranged at the right side of the battery main body 221, and the strong heat exchange area 11 is arranged at the left and right sides of the weak heat exchange area 12. The strong heat exchange area 11 on the left side of the weak heat exchange area 12 corresponds to the first pole 2111, so as to cool and dissipate heat for the first pole 2111. The strong heat exchange area 11 on the right side of the weak heat exchange area 12 corresponds to the second pole 2112, so as to cool and dissipate heat for the second pole 2112.

[0128] Through the above design of the battery monomer 2 and the water-cooled plate 1, the strong heat exchange area 11 is close to the battery pole 211, which can improve the cooling effect of the strong heat exchange area 11 on the battery pole 211, further shorten the charging and discharging time of the battery pack 100, and improve the safety of the battery pack 100.

[0129] In other embodiments, the water-cooled plate can also be arranged parallel to the height direction of the battery monomer. At this time, the battery pole can be arranged at the top of the battery monomer, and the strong heat exchange area can be arranged at the top of the weak heat exchange area, so that the strong heat exchange area is close to the battery pole, and the cooling and heat exchange of the battery pole are realized by the strong heat exchange area.

[0130] For example, the battery pole is arranged at the upper part of the battery monomer, and the strong heat exchange area is arranged at the upper part of the weak heat exchange area.

[0131] In other embodiments, as shown in Figure 10 and Figure 11 , the battery pack 100 includes a plurality of battery monomers 2 and a bus bar. At least two battery monomers 2 are electrically connected with the bus bar. The bus bar corresponds to the strong heat exchange area 11, and the battery monomer 2 corresponds to the weak heat exchange area 12.

[0132] For example, as shown in Figure 10 and Figure 11As shown, the plurality of battery monomers 2 are arranged in eight rows, and the eight rows of battery monomers 2 are arranged in sequence along the left-right direction, wherein the four rows of battery monomers 2 on the left side form a first battery monomer group, and the four rows of battery monomers 2 on the right side form a second battery monomer group. The bus bar includes a positive bus bar and a negative bus bar, and the plurality of battery monomers 2 in the first battery monomer group are electrically connected through the positive bus bar and the negative bus bar, and the plurality of battery monomers 2 in the second battery monomer group are electrically connected through the positive bus bar and the negative bus bar. Among them, the positive bus bar and the negative bus bar corresponding to the first battery monomer group are respectively located on the left and right sides of the first battery monomer group, and the strong heat exchange area 11 is arranged on the left and right sides of the first battery monomer group; the positive bus bar and the negative bus bar corresponding to the second battery monomer group are respectively located on the left and right sides of the second battery monomer group, and the strong heat exchange area 11 is arranged on the left and right sides of the second battery monomer group.

[0133] It can be understood that the area where the bus bar is located usually has a large amount of heat, so it is necessary to cool and dissipate heat in the area where the bus bar is located, and to improve the safety of the battery pack 100. By arranging the strong heat exchange area 11 on the left and right sides of the first battery monomer group, the cooling effect of the strong heat exchange area 11 on the bus bar can be improved, and the safety of the battery pack 100 can be improved.

[0134] By including the area where the bus bar is located in the strong heat exchange area 11, the cooling effect of the bus bar can be improved by using the strong heat exchange area 11, and the safety of the battery pack 100 can be improved.

[0135] Optionally, as shown in Figure 3 and Figure 10 The battery pack 100 further includes a bottom guard plate 4, an upper cover 5, a heat-conducting adhesive 6, a first sealing member 7 and a second sealing member 8. Among them, the bottom guard plate 4 is connected with the lower part of the box body 3, and the first sealing member 7 is arranged between the bottom guard plate 4 and the box body 3; the upper cover 5 is connected with the upper part of the box body 3, and the second sealing member 8 is arranged between the upper cover 5 and the box body 3, and the water-cooled plate 1 is arranged on the upper side of the bottom guard plate 4, so that the bottom guard plate 4, the upper cover 5, the box body 3, the water-cooled plate 1, the first sealing member 7 and the second sealing member 8 form a closed space, and the battery monomer 2 is arranged in the closed space. Among them, the battery monomer 2 can be adhered to the water-cooled plate 1 by structural adhesive.

[0136] When the battery pack 100 works, the battery monomer 2 will produce heat and cause the temperature to rise. The battery pole 211 of the battery monomer 2 is the highest in temperature among the battery monomers 2. The heat dissipation of the battery monomer 2 mainly relies on the water-cooling plate 1 at the bottom. If the temperature of the battery pole 211 is too high, the charging current or discharging current of the battery pack 100 will be limited, the charging and discharging time of the battery pack 100 will be affected, and even the safety of the battery monomer 2 will be affected. By arranging the water-cooling plate 1, the strong heat exchange area 11 of the water-cooling plate 1 provided with the spoiler 111 corresponds to the battery pole 211, the heat exchange capacity at the battery pole 211 can be improved, the temperature of the battery pole 211 can be reduced, the charging and discharging time of the battery pack 100 can be improved, and the safety of the battery monomer 2 can be ensured.

[0137] The vehicle of the embodiment of the present disclosure comprises the battery pack 100 of any of the above embodiments. The vehicle can be an electric vehicle.

[0138] Since the charging and discharging time of the battery pack 100 is short and the safety is good, the vehicle of the embodiment of the present disclosure has the advantages of good user experience and good safety.

[0139] Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present disclosure. Changes, modifications, replacements and variations of the above embodiments made by those of ordinary skill in the art are within the protection scope of the present disclosure.

Claims

1. A water-cooling plate characterized by, The water-cooled plate is provided with a cooling cavity through which the cooling medium flows. The cooling cavity is provided with a strong heat exchange zone and a weak heat exchange zone. The strong heat exchange zone is set for areas with high heat generation, and the weak heat exchange zone is set for areas with low heat generation. Turbulence protrusions are provided in the strong heat exchange zone.

2. The water cold plate of claim 1, wherein, The strong heat exchange zone is provided with a strong heat exchange channel, and the turbulence protrusion is provided in the strong heat exchange channel. The weak heat exchange zone is provided with a weak heat exchange channel.

3. The water cold plate of claim 2, wherein, The water-cooled plate is provided with an inlet and an outlet. The inlet of the strong heat exchange channel is connected to the inlet, the outlet of the strong heat exchange channel is connected to the inlet of the weak heat exchange channel, and the outlet of the weak heat exchange channel is connected to the outlet.

4. The water cold plate of claim 3, wherein, There are multiple strong heat exchange channels and multiple weak heat exchange channels. The inlets of the multiple strong heat exchange channels are all connected to the liquid inlet, and the outlets of the multiple weak heat exchange channels are all connected to the liquid outlet.

5. The water cold plate of claim 3, wherein, The strong heat exchange channel and the weak heat exchange channel extend in the same direction and are arranged side by side. The liquid inlet is located on one side of the water-cooled plate in the extension direction of the high-intensity heat exchange channel, and the liquid outlet is located on one side of the water-cooled plate in the extension direction of the high-intensity heat exchange channel.

6. The water cold plate of any of claims 2-5, wherein, The strong heat exchange channel is provided with multiple sets of turbulence protrusions, which are arranged at intervals along the extension direction of the strong heat exchange channel, and multiple turbulence protrusions in the same set are arranged at intervals along the width direction of the strong heat exchange channel.

7. The water cold plate of claim 6, wherein, In two adjacent groups of the turbulence protrusions, at least one of the turbulence protrusions in one group is located between two adjacent turbulence protrusions in the other group.

8. The water cold plate of claim 7, wherein, The number of the disturbance protrusions in any two adjacent groups is different.

9. The water cold plate of claim 8, wherein, The multiple sets of turbulence protrusions include a first set of turbulence protrusions and a second set of turbulence protrusions, the first set of turbulence protrusions and the second set of turbulence protrusions are arranged alternately along a first direction, and the difference in the number of the first set of turbulence protrusions and the second set of turbulence protrusions is 1.

10. A battery pack, characterized by, include: The water-cooled plate is the water-cooled plate according to any one of claims 1-9; The heating element has a first heating zone and a second heating zone, wherein the heat output of the first heating zone is greater than that of the second heating zone, a strong heat exchange zone is provided corresponding to the first heating zone, and a weak heat exchange zone is provided corresponding to the second heating zone.

11. The battery pack of claim 10, wherein, The heat-generating component includes a battery cell, which includes a battery body and battery terminals. The battery terminals correspond to the strong heat exchange zone, and the battery body corresponds to the weak heat exchange zone.

12. The battery pack of claim 10, wherein, The battery pack includes multiple battery cells, and the heat-generating component includes a busbar. At least two of the battery cells are electrically connected to the busbar. The busbar corresponds to the strong heat exchange zone, and the battery cells correspond to the weak heat exchange zone.

13. A vehicle characterized by comprising: The battery pack includes any one of claims 10-12.

Images