Battery device and vehicle
By installing an insulating cover plate to cover the terminals and conductors in the battery device, and setting through holes in the cover plate to form a heat dissipation channel, the problem of short circuit risk of the battery under extreme operating conditions is solved, and efficient heat dissipation and improved safety performance are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-03-24
AI Technical Summary
Under extreme operating conditions, the temperature difference between the internal and external environments of the battery can cause condensation, which may lead to a short circuit risk.
An insulating cover is installed in the battery device to cover the positions of the terminals and conductive busbars. Through holes are provided on the insulating cover to form heat dissipation channels, preventing condensate from directly contacting the terminals or conductive busbars. At the same time, the through holes and conductive busbars are staggered to prevent insulation failure.
It reduces the risk of short circuits, improves the heat dissipation efficiency and safety performance of the battery device, and avoids performance degradation and condensation caused by heat accumulation.
Smart Images
Figure CN224036613U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of batteries, in particular to a battery device and a vehicle. BACKGROUND
[0002] In the storage or extreme working conditions, such as high temperature and low temperature working conditions, the internal and external environment temperatures of the battery device are inconsistent, which can cause the condensate water to be generated in the internal of the battery device, and the condensate water falling on the position of the pole or the conductive row can cause the short circuit risk. CONTENT
[0003] The purpose of the present application is to provide a battery device and a vehicle, which can reduce the short circuit risk and improve the safety performance.
[0004] To solve the above technical problems, the present application provides a battery device, which comprises a box body and a battery pack, the box body comprises a bottom plate, the battery pack is arranged in the internal of the box body, and the battery pack comprises:
[0005] a plurality of cylindrical battery monomers, the axial direction of the cylindrical battery monomers is parallel to the bottom plate, and the cylindrical battery monomers comprise a pole;
[0006] a conductive row, which is connected to two adjacent cylindrical battery monomers;
[0007] an insulating cover plate, which is arranged on the side where the poles of the cylindrical battery monomers are located, and the wall part of the insulating cover plate facing the conductive row is provided with a through hole, and the through hole and the conductive row are at least partially staggered.
[0008] The battery device of the present application is provided with an insulating cover plate on the side where the poles of the cylindrical battery monomers are located, and at least the positions of the poles and the conductive row are covered, so as to avoid the condensate water in the internal of the battery device from directly falling on the positions of the poles or the conductive row to cause the short circuit risk. Meanwhile, the wall part of the insulating cover plate facing the conductive row is provided with a through hole, the through hole can provide a direct heat dissipation channel for the side where the poles of the cylindrical battery monomers are located, the heat generated by the plurality of cylindrical battery monomers in the charging and discharging process can quickly escape from the through hole, the local temperature rise at the connection position of the poles and the conductive row is reduced, the performance decay or aging acceleration caused by the heat accumulation is avoided, the generation of condensation caused by the temperature difference between the surface temperature of the battery pack and the temperature of other positions in the battery device is avoided, and the short circuit risk is further reduced. The through hole and the conductive row are at least partially staggered, so as to avoid the insulation failure of the conductive row as much as possible.
[0009] The present application also provides a vehicle comprising the above-mentioned battery device.
[0010] The vehicle of the present application comprises the above-mentioned battery device, and therefore has the same technical effects as the above-mentioned battery device, which will not be described herein again. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 A structural schematic diagram of a specific embodiment of the battery device provided in the present application is shown in FIG. 1.
[0012] Figure 2 A structural schematic diagram of a specific embodiment of the battery device provided in the present application is shown in FIG. 1. Figure 1 A structural schematic diagram of a specific embodiment of the battery device provided in the present application is shown in FIG. 1.
[0013] Figure 3 A structural schematic diagram of a specific embodiment of the battery device provided in the present application is shown in FIG. 1. Figure 2 A structural schematic diagram of a specific embodiment of the battery device provided in the present application is shown in FIG. 1.
[0014] Figure 4 A structural schematic diagram of a specific embodiment of the battery device provided in the present application is shown in FIG. 1. Figure 2 A structural schematic diagram of a specific embodiment of the battery device provided in the present application is shown in FIG. 1.
[0015] Figure 5 A structural schematic diagram of a specific embodiment of the battery device provided in the present application is shown in FIG. 1. Figure 4 A structural schematic diagram of a specific embodiment of the battery device provided in the present application is shown in FIG. 1.
[0016] In the drawings, Figures 1-5 The reference signs in the drawings are as follows:
[0017] 1 - battery pack; 11 - cylindrical battery cell; 12 - conductive row; 13 - insulation cover plate; 131 - wall part; 132 - adhesive layer; a - through hole;
[0018] 2 - box body. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0020] The terms "first", "second", and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of a kind and are not limited in number, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship.
[0021] It should be understood that the reference herein to“some embodiments” means that a particular feature, structure, or characteristic described is included in at least one embodiment of the application. Therefore, appearances of the phrase“in some embodiments” at various places throughout the specification are not necessarily referring to the same embodiments of the application. Furthermore, the particular features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.
[0022] In the description of the utility model, unless there is definite and limited, the term“link”,“connect”,“fix” should be broad understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two elements internal communication or two elements of the interaction relationship.For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to specific circumstances.
[0023] Please refer to Figures 1-5 , Figure 1 for the structure schematic diagram of a specific embodiment of the battery device provided by the application; Figure 2 for Figure 1 the structure schematic diagram of battery pack; Figure 3 for Figure 2 the exploded view of battery pack; Figure 4 for Figure 2 the structure schematic diagram of insulating cover plate; Figure 5 for Figure 4 the structure schematic diagram of insulating cover plate from another angle.
[0024] The embodiment provides a battery device, which comprises a battery pack 1 and a box body 2, the box body 2 comprises a bottom plate, the battery pack 1 is arranged in the interior of the box body 2, and the battery pack 1 comprises:
[0025] A plurality of cylindrical battery monomers 11, the axial direction of the cylindrical battery monomer 11 is parallel to the bottom plate, and the cylindrical battery monomer 11 comprises a pole;
[0026] A conductive row 12 is connected with two adjacent cylindrical battery monomers 11.
[0027] An insulating cover plate 13 is arranged on the side where the pole of the cylindrical battery monomer 11 is located, a through hole a is arranged on the wall part 131 of the insulating cover plate 13 facing the conductive row 12, and the through hole a and the conductive row 12 are at least partially staggered.
[0028] In the battery device, the battery pack 1 is provided with an insulating cover plate 13 on the side where the pole of the cylindrical battery monomer 11 is located, which at least covers the position of the pole and the conductive row 12 to avoid the risk of short circuit caused by the direct falling of condensed water in the battery device to the position of the pole or the conductive row 12. At the same time, the wall part 131 of the insulating cover plate 13 facing the conductive row 12 is provided with a through hole a, which provides a direct heat dissipation channel for the side where the pole of the cylindrical battery monomer 11 is located. The heat generated by the cylindrical battery monomer 11 during the charging and discharging process can quickly escape from the through hole a, reducing the local temperature rise at the connection between the pole and the conductive row 12, avoiding the performance degradation or accelerated aging caused by heat accumulation, and avoiding the intensification of condensation caused by the temperature difference between the surface temperature of the battery pack 1 and other positions in the battery device, further reducing the risk of short circuit. The through hole a and the conductive row 12 are at least partially staggered, in other words, the wall part 131 of the insulating cover plate 13 facing the conductive row 12 still at least partially covers the conductive row 12, and the wall part 131 of the insulating cover plate 13 facing the conductive row 12 can still play the role of insulating barrier for the conductive row 12, as far as possible to avoid the insulation failure of the conductive row 12.
[0029] By Figure 1 And Figure 2 As can be seen, the number of conductive rows 12 is multiple, at least part of the conductive rows 12 are distributed along the length direction, the number of through holes a is multiple, and the multiple through holes a are arranged along the length direction, wherein the length direction is the arrangement direction of the cylindrical battery monomer 11.
[0030] As arranged above, the multiple through holes a are distributed along the length direction, which can form multiple direct heat dissipation channels in the length direction, and the heat generated at each conductive row 12 can quickly escape from the nearest heat dissipation channel, improving the heat dissipation efficiency of the battery device; at the same time, compared with a single large size through hole, the interval distribution of multiple small size through holes a can reduce the weakening of the structural strength of the insulating cover plate 13, ensure the structural stability of the insulating cover plate 13, and reduce the failure risk of the insulating cover plate 13.
[0031] Further, in some embodiments of the present application, the distance between the two adjacent through holes a along the length direction ranges from 10mm to 100mm.
[0032] It is verified that if the distance between the two adjacent through holes a is less than 10 mm, the edge spacing of the two adjacent through holes a is insufficient, which reduces the structural strength of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, increases the failure risk of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, and the dense through holes reduce the effective coverage area of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12. The condensed water in the battery device may enter the position of the pole or the conductive row 12 through the through hole a, causing the risk of short circuit; if the distance between the two adjacent through holes a is greater than 100 mm, the heat generated by the conductive row 12 between the two adjacent through holes a cannot be quickly dissipated, and the heat aggregation phenomenon still occurs in the battery device, resulting in temperature difference between the surface temperature of the battery device and other positions in the battery device and condensation. Therefore, the distance between the two adjacent through holes a has the above value range, which not only ensures that the insulating cover plate 13 has sufficient heat dissipation area, reduces the heat aggregation of the battery device, and avoids the condensation caused by the temperature difference between the surface temperature of the battery device and other positions in the battery device as much as possible, but also ensures that the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 has sufficient coverage area on the side of the pole of the cylindrical battery monomer 11, blocks the condensed water in the battery device from entering the position of the pole or the conductive row 12, and reduces the risk of short circuit as much as possible. It can also ensure the structural strength of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, ensure the structural stability of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, and reduce the failure risk of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12.
[0033] The distance between the two adjacent through holes a can be specifically 10 mm, 30 mm, 50 mm, 70 mm, 100 mm, etc. When the distance between the two adjacent through holes a is 10 mm, the insulating cover plate 13 has the largest heat dissipation area under the premise of ensuring the structural strength of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 and the waterproof ability of the insulating cover plate 13, the heat dissipation efficiency of the battery device is the highest, the heat aggregation of the battery device is reduced to the maximum, the temperature difference between the surface temperature of the battery device and other positions in the battery device is reduced to the maximum, the condensation is reduced to the maximum, and the risk of short circuit is reduced. When the distance between the two adjacent through holes a is 100 mm, the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 has the largest coverage area on the side of the pole of the cylindrical battery monomer 11 under the premise of ensuring the heat dissipation efficiency of the battery device, the structural strength of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is the best, and the failure risk of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is reduced to the maximum. When the distance between the two adjacent through holes a is 30 mm, 50 mm, or 70 mm, a better balance between structural strength, waterproof ability and heat dissipation efficiency can be achieved.
[0034] Further, in some embodiments of the present application, the distance between the conductive strip 12 and the through hole a along the axial direction of the cylindrical battery cell 11 is in the range of 0mm-10mm.
[0035] It has been verified that if the distance between the conductive strip 12 and the through hole a along the axial direction of the cylindrical battery cell 11 is greater than 10mm, the non-functional area between the conductive strip 12 and the wall part 131 of the insulating cover plate 13 facing the conductive strip 12 is too large, resulting in waste of the internal space of the battery device and reducing the energy density of the battery device. Therefore, the distance between the conductive strip 12 and the through hole a along the axial direction of the cylindrical battery cell 11 has the above value range, wherein the distance between the conductive strip 12 and the through hole a along the axial direction of the cylindrical battery cell 11 can be specifically 0mm, 3mm, 5mm, 7mm, 10mm, etc., which can reduce the volume of the non-functional area between the conductive strip 12 and the wall part 131 of the insulating cover plate 13 facing the conductive strip 12, reduce the waste of the internal space of the battery device, and improve the energy density of the battery device.
[0036] Preferably, the distance between the conductive strip 12 and the through hole a along the axial direction of the cylindrical battery cell 11 is in the range of 1.5mm-8mm, such as 1.5mm, 3mm, 5mm, 8mm, etc., which further reduces the volume of the non-functional area between the conductive strip 12 and the wall part 131 of the insulating cover plate 13 facing the conductive strip 12, further improves the energy density of the battery device, reserves a mounting gap between the conductive strip 12 and the wall part 131 of the insulating cover plate 13 facing the conductive strip 12, avoids installation interference, and improves the installation smoothness of the insulating cover plate 13.
[0037] Further, in some embodiments of the present application, the ratio of the total area of the through hole a to the area of the wall part 131 of the insulating cover plate 13 facing the conductive strip 12 is in the range of 0.02-0.8.
[0038] It is verified that if the ratio of the total area of the through hole a and the area of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is less than 0.02, the total area of the through hole a is too small, the heat dissipation area of the heat dissipation channel provided by the insulating cover plate 13 is too small, and the heat of the battery device cannot be dissipated in time, and the heat aggregation phenomenon still occurs, resulting in the temperature difference between the surface temperature of the battery device and other positions in the battery device to produce condensation. If the ratio of the total area of the through hole a and the area of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is greater than 0.8, the total area of the through hole a is too large, and the provision of the through hole a will excessively weaken the structural strength of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, increase the failure risk of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, and the total area of the through hole a is too large, which will also excessively reduce the coverage area of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 to the pole or the conductive row 12, and the condensed water in the battery device is more likely to enter the position of the pole or the conductive row 12 through the through hole a when flowing through the wall portion, causing short circuit risk. Therefore, the ratio of the total area of the through hole a and the area of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 has the above range, which can ensure that the heat of the battery device can be dissipated in time, reduce the heat aggregation of the battery device, and avoid the condensation caused by the temperature difference between the surface temperature of the battery device and other positions in the battery device as much as possible, and at the same time, ensure that the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 has sufficient coverage area to the pole or the conductive row 12, reduce the probability of the condensed water in the battery device entering the position of the pole or the conductive row 12 through the through hole a when flowing through the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, and reduce the failure risk.
[0039] The ratio of the total area of the through hole a to the area of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 can be specifically 0.02, 0.1, 0.3, 0.5, 0.8, etc. When the ratio of the total area of the through hole a to the area of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is 0.02, the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 has the largest coverage area of the pole or the conductive row 12 under the premise of ensuring the heat dissipation capacity of the battery device, the probability of the condensed water in the battery device entering the position of the pole or the conductive row 12 through the through hole a when flowing along the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is minimized, and the short circuit risk is reduced. When the ratio of the total area of the through hole a to the area of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is 0.8, the heat dissipation area of the heat dissipation channel provided by the insulating cover plate 13 is the largest under the premise of ensuring the waterproof capacity of the insulating cover plate 13, the heat of the battery device can be dissipated the fastest, the heat accumulation phenomenon is minimized, the possibility of condensation caused by the temperature difference between the surface temperature of the battery device and other positions in the battery device is minimized, and the short circuit risk is reduced. When the ratio of the total area of the through hole a to the area of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is 0.1, 0.3 or 0.5, a better balance between the heat dissipation capacity and the waterproof performance can be achieved.
[0040] Further, in some embodiments of the present application, the number of through holes a is multiple, and the area of a single through hole a ranges from 12mm 2 to 500mm 2 .
[0041] It has been verified that if the area of a single through hole a is less than 12mm 2 , the heat dissipation area of a single through hole a is too small, resulting in poor flow, the heat generated by the battery device cannot be dissipated in time, the heat is still accumulated in the battery device, and there is still a possibility of condensation. If the area of a single through hole a is greater than 500mm 2 , the area of a single through hole a is too large, on the one hand, the large through hole a can weaken the structural strength of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 to a greater extent, and increase the failure risk of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, on the other hand, the condensed water in the battery device has a greater probability of entering the position of the pole or the conductive row 12 through the through hole a when flowing along the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, and the short circuit risk is caused. Therefore, the area of a single through hole a has the above range, and the area of a single through hole a can be specifically 12mm 2 , 50mm 2 , 100mm 2 , 300mm 2 , 500mm 2The total length of the through hole a and the total length of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 have a ratio in the range of 0.1-0.7, which can ensure that the heat generated by the battery device can be timely dissipated, reduce the heat accumulation inside the battery device, reduce the possibility of condensation, ensure the structural stability of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, reduce the risk of failure of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, reduce the probability of condensed water entering the position of the pole or the conductive row 12 through the through hole a, and reduce the risk of short circuit.
[0042] Further, in some embodiments of the present application, the ratio of the total length of the through hole a and the total length of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is in the range of 0.1-0.7.
[0043] By Figure 1 and Figure 2 It can be seen that the total length of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is similar to the total length of the conductive row 12. If the ratio of the total length of the through hole a and the total length of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is less than 0.1, the setting range of the through hole a in the length direction is too small, only the part of the conductive row 12 close to the through hole a can dissipate heat in time, and the heat generated by the part of the conductive row 12 far from the through hole a cannot escape, resulting in insufficient heat dissipation efficiency of the battery device, causing heat accumulation inside the battery device, and still having the possibility of condensation. If the ratio of the total length of the through hole a and the total length of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is greater than 0.7, the setting range of the through hole a in the length direction is too large, and the setting of the through hole a can greatly weaken the structural strength of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, increase the risk of failure of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, and when the condensed water inside the battery device flows downward along the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, the condensed water has a great possibility of entering the position of the pole or the conductive row 12 through the through hole a, causing the risk of short circuit. Therefore, the total length of the through hole a and the total length of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 have a ratio in the range as above, which can ensure the heat dissipation efficiency of the battery device, reduce the heat accumulation inside the battery device, reduce the risk of failure of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, reduce the possibility of the condensed water inside the battery device contacting the pole or the conductive row 12, and reduce the risk of short circuit.
[0044] The ratio of the total length of the through hole a to the total length of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 can be specifically 0.1, 0.3, 0.5, 0.6, 0.7, etc. When the ratio of the total length of the through hole a to the total length of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is 0.1, the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 has the maximum coverage area of the pole or the conductive row 12 while ensuring the heat dissipation capacity of the battery device, thereby reducing the possibility of the condensed water inside the battery device contacting the pole or the conductive row 12 and reducing the risk of short circuit; when the ratio of the total length of the through hole a to the total length of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is 0.7, the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 has the maximum heat dissipation area while ensuring the waterproof capacity of the insulating cover plate 13, thereby maximizing the heat dissipation efficiency of the battery device and minimizing the possibility of condensation; when the ratio of the total length of the through hole a to the total length of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is 0.3, 0.5, or 0.6, a better balance between the heat dissipation capacity and the waterproof performance of the battery device can be achieved.
[0045] Further, the through hole a is located in the middle of the height direction of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, wherein the height direction is perpendicular to the axial direction of the cylindrical battery monomer 11. Figure 3 Figure 4 It can be seen that, in the embodiment, the through hole a is located in the middle of the height direction of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, wherein the height direction is perpendicular to the axial direction of the cylindrical battery monomer 11.
[0046] It can be seen that, in the embodiment, the through hole a is located in the middle of the height direction of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, wherein the height direction is perpendicular to the axial direction of the cylindrical battery monomer 11. Figure 2 It can be seen that, in the embodiment, the through hole a is located in the middle of the height direction of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12, wherein the height direction is perpendicular to the axial direction of the cylindrical battery monomer 11.
[0047] Further, in some embodiments of the present application, the distance between the upper edge of the through hole a and the upper edge of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is in the range of 35mm-45mm.
[0048] It is verified that if the distance between the upper edge of the through hole a and the upper edge of the wall part 131 of the insulating cover plate 13 facing the conductive row 12 is less than 35 mm, the position of the through hole a will excessively occupy the insulation protection space of the upper conductive row 12, causing the upper conductive row 12 to be excessively exposed from the through hole a, affecting the insulation performance of the upper conductive row 12; if the distance between the upper edge of the through hole a and the upper edge of the wall part 131 of the insulating cover plate 13 facing the conductive row 12 is greater than 45 mm, the heat generated by the upper conductive row 12 cannot be quickly conducted out, and in order to ensure that the through hole a has sufficient heat dissipation area, the through hole a will excessively occupy the insulation protection space of the lower conductive row 12, causing the lower conductive row 12 to be excessively exposed from the through hole a, affecting the insulation performance of the lower conductive row 12; if you want to ensure the insulation performance of the lower conductive row 12, the size of the through hole a in the height direction is too small, the heat dissipation area is insufficient, and the heat dissipation performance of the battery device is affected. Therefore, the distance between the upper edge of the through hole a and the upper edge of the wall part 131 of the insulating cover plate 13 facing the conductive row 12 has the above value range, and the distance between the upper edge of the through hole a and the upper edge of the wall part 131 of the insulating cover plate 13 facing the conductive row 12 can be 35 mm, 38 mm, 40 mm, 42 mm, 45 mm, etc., which can ensure the insulation performance of the upper conductive row 12 and the lower conductive row 12, and can ensure that the through hole a has sufficient heat dissipation area, and improve the heat dissipation performance of the battery device.
[0049] Further, in some embodiments of the present application, the distance between the lower edge of the through hole a and the lower edge of the wall part 131 of the insulating cover plate 13 facing the conductive row 12 is 35-45 mm.
[0050] It is verified that if the distance between the lower edge of the through hole a and the lower edge of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is less than 35 mm, the position of the through hole a will excessively occupy the insulating protection space of the lower conductive row 12, causing the lower conductive row 12 to be excessively exposed from the through hole a, affecting the insulation performance of the lower conductive row 12; if the distance between the lower edge of the through hole a and the lower edge of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 is greater than 45 mm, the heat generated by the lower conductive row 12 cannot be quickly conducted out, and in order to ensure that the through hole a has sufficient heat dissipation area, the through hole a will excessively occupy the insulating protection space of the upper conductive row 12, causing the upper conductive row 12 to be excessively exposed from the through hole a, affecting the insulation performance of the upper conductive row 12; if the insulation performance of the upper conductive row 12 is to be ensured at the same time, the size of the through hole a in the height direction is too small, the heat dissipation area is insufficient, and the heat dissipation performance of the battery device is affected. Therefore, the distance between the lower edge of the through hole a and the lower edge of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 has the above value range, and the distance between the lower edge of the through hole a and the lower edge of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 can be 35 mm, 38 mm, 40 mm, 42 mm, 45 mm, etc., which can ensure the insulation performance of the upper conductive row 12 and the lower conductive row 12, and can ensure that the through hole a has sufficient heat dissipation area, and improve the heat dissipation performance of the battery device.
[0051] Please continue to refer to Figure 4 In some embodiments of the present application, the area between the upper edge of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 and the upper edge of the through hole a is provided with a glue layer 132, and the glue layer 132 and the conductive row 12 are bonded.
[0052] And / or, the area between the lower edge of the wall portion 131 of the insulating cover plate 13 facing the conductive row 12 and the lower edge of the through hole a is provided with a glue layer 132, and the glue layer 132 and the conductive row 12 are bonded.
[0053] As arranged above, the insulating cover plate 13 can be fixed by the glue layer 132 and the conductive row 12 of the corresponding height, improving the connection stability of the insulating cover plate 13 and improving the integrated reliability of the overall structure of the battery device.
[0054] In addition, the shape of the through hole a is not limited, such as in some embodiments of the present application, the through hole a is a long strip structure extending in the length direction; in some other embodiments of the present application, the through hole a is a circular hole, a square hole, etc.
[0055] The present embodiment also provides a battery device comprising the foregoing battery device.
[0056] The battery device of the present embodiment comprises the foregoing battery device, and therefore has the same technical effects as the foregoing battery device, which will not be described here.
[0057] The embodiment also provides a vehicle comprising the battery device.
[0058] The vehicle of the embodiment comprises the battery device, and thus has the same technical effects as the battery device, which will not be described herein.
[0059] The above is only the preferred embodiment of the present application, and it should be pointed out that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.
Claims
1. A battery device, characterized by, The battery device comprises a battery pack and a box body, the box body comprises a bottom plate, the battery pack is arranged inside the box body, and the battery pack comprises: a plurality of cylindrical battery cells, the axial direction of the cylindrical battery cells is parallel to the bottom plate, and the cylindrical battery cells comprise a pole column; a conductive row is arranged between two adjacent cylindrical battery cells; an insulating cover plate is arranged on one side of the pole column of the cylindrical battery cell, a through hole is arranged on the wall part of the conductive row of the insulating cover plate, and the through hole and the conductive row are at least partially staggered.
2. The battery device according to claim 1, characterized by The number of the conductive rows is multiple, at least part of the conductive rows are distributed along a length direction, the number of the through holes is multiple, and the multiple through holes are arranged at intervals along the length direction, wherein the length direction is the arrangement direction of the cylindrical battery cells.
3. The battery device of claim 2, wherein, The distance between two adjacent through holes along the length direction ranges from 10 mm to 100 mm.
4. The battery device of claim 1, wherein The distance between the conductive row and the through hole along the axial direction of the cylindrical battery cell ranges from 0 mm to 10 mm.
5. The battery device of claim 1, wherein The ratio of the total area of the through hole to the area of the wall part of the insulating cover plate facing the conductive row ranges from 0.02 to 0.
8.
6. The battery device of claim 1, wherein The number of the through holes is multiple, the area of a single through hole ranges from 12mm 2 -500mm 2 .
7. The battery device of claim 1, wherein The ratio of the total length of the through hole to the total length of the wall part of the insulating cover plate facing the conductive row ranges from 0.1 to 0.
7.
8. The battery device of claim 1, wherein The through hole is located in the middle of the height direction of the wall part of the insulating cover plate facing the conductive row, wherein the height direction is perpendicular to the axial direction of the cylindrical battery cell.
9. The battery device of claim 1, wherein, The distance between the upper edge of the through hole and the upper edge of the wall part of the insulating cover plate facing the conductive row in the direction perpendicular to the axial direction of the cylindrical battery cell ranges from 35 mm to 45 mm.
10. The battery device of claim 1, wherein The distance between the lower edge of the through hole and the lower edge of the wall part of the insulating cover plate facing the conductive row in the direction perpendicular to the axial direction of the cylindrical battery cell ranges from 35 mm to 45 mm.
11. The battery device according to any one of claims 1 to 10, wherein An adhesive layer is arranged between the upper edge of the wall part of the insulating cover plate facing the conductive row and the upper edge of the through hole, and the adhesive layer is bonded with the conductive row. And / or, an adhesive layer is arranged between the lower edge of the wall part of the insulating cover plate facing the conductive row and the lower edge of the through hole, and the adhesive layer is bonded with the conductive row.
12. A vehicle characterized by comprising: The battery device comprises the battery device of any one of claims 1-11.