Battery radiator and battery pack

Abstract

The present invention provides a battery radiator and battery pack. Specifically, the battery radiator is configured for thermal contact with a battery tab. The battery radiator has at least one ventilation hole formed on its side, extending through both sides of the radiator. Several cooling fins are positioned within the at least one ventilation hole. The present invention provides a battery radiator and battery pack to at least address the technical issues of low heat dissipation efficiency and poor heat dissipation from battery tabs.

Description

Technical Field

[0001] The present invention relates to the technical field of battery heat dissipation, and in particular to a battery radiator and a battery pack. Background Art

[0002] Drones are increasingly being used in transportation, industry, and agriculture. When drones are operating in the air, their batteries continuously discharge, causing significant heat buildup. This is especially true when the drone is operating at high power. If the heat generated by the batteries cannot be dissipated promptly, it accumulates and causes the batteries to overheat. Excessively high battery temperatures can reduce efficiency, shorten their lifespan, and even lead to safety accidents.

[0003] Battery radiators are devices used to dissipate heat from batteries. Existing battery radiators typically use water or air cooling to dissipate heat. Water cooling has a limited temperature control range, is significantly affected by the external environment, and is costly. Air cooling suffers from uneven cooling and low cooling efficiency. Due to the limitations of the battery pack's structure, heat generated by the tabs and conducted from the cells to the tabs during operation is difficult to dissipate effectively. This large amount of heat accumulation causes a significant temperature rise in the battery pack, which is particularly important for high-power, high-heat-flux battery packs, severely impacting the pack's operating life.

[0004] Therefore, how to improve the heat dissipation efficiency of the battery tabs and improve the heat dissipation effect of the battery pack is one of the technical problems that need to be solved urgently. Summary of the Invention

[0005] The present invention provides a battery radiator and a battery pack, which are used to at least solve the technical problems of low heat dissipation efficiency and poor heat dissipation effect of battery tabs.

[0006] To achieve the above objectives, the present invention provides a battery radiator and a battery pack. The present invention provides a battery radiator for thermally contacting a battery tab, wherein the battery radiator is provided with a plurality of heat dissipation fins.

[0007] The present invention provides a battery radiator, which is used to be in thermal contact with the battery tabs, can realize heat exchange between the battery radiator and the tabs, and by providing a plurality of heat dissipation fins, is used to increase the heat dissipation area of ​​the battery radiator, accelerate heat dissipation, and thus improve the heat dissipation effect.

[0008] In a possible implementation, at least one ventilation hole is provided on a side surface of the battery radiator, the at least one ventilation hole passes through two side surfaces of the battery radiator, and the plurality of heat dissipating fins are disposed in the at least one ventilation hole.

[0009] The present invention provides a battery radiator, which has at least one ventilation hole on the side of the battery radiator, so that outside air can enter the ventilation hole from the side of the radiator and take away the heat conducted to the battery radiator from the battery tabs; the ventilation hole runs through both sides of the battery radiator, which helps to form an air circulation channel in the ventilation hole. Air can enter the ventilation hole from both sides of the battery radiator, so that air can circulate quickly in the ventilation hole, take away the heat conducted to the battery radiator from the tabs, and improve the heat dissipation efficiency.

[0010] In one possible implementation, the plurality of heat dissipation fins are arranged longitudinally and spaced apart from each other, and upper and lower ends of the plurality of heat dissipation fins are connected to the inner wall of the ventilation hole;

[0011] The plurality of heat dissipation fins extend from one end of the at least one ventilation hole to the other end of the at least one ventilation hole.

[0012] In one possible implementation, a top surface of the battery radiator is provided with a cavity for accommodating a battery management system, and the cavity is located above the at least one ventilation hole and isolated from the at least one ventilation hole.

[0013] In a possible implementation, a first reserved hole is provided in the concave cavity, the first reserved holes all pass through the bottom of the concave cavity, and the first reserved holes are isolated from the at least one ventilation hole;

[0014] A second reserved hole is further provided in the cavity, and the second reserved hole is isolated from the ventilation hole.

[0015] In a possible implementation, the battery radiator has a bottom surface facing away from the cavity, and a reserved groove is provided on the bottom surface.

[0016] In a possible implementation, an upper limit groove is further provided on the top surface of the battery radiator, and the upper limit groove is recessed inwardly along the wall thickness direction of the battery radiator.

[0017] In a possible implementation, both ends of the battery radiator have a pair of mounting posts, and connection holes are provided in the mounting posts; and lower limit grooves are provided at the bottoms of the mounting posts.

[0018] The present invention also provides a battery pack, comprising a housing, a battery cell body, a battery management system, an upper cover, and the above-mentioned battery radiator, wherein the battery cell body is accommodated in the housing, the battery radiator is arranged on the housing, the battery management system is accommodated in a concave cavity opened on the top of the battery radiator, and the upper cover is arranged on the battery radiator;

[0019] The battery management system is in contact with the bottom surface of the cavity, and the bottom surface of the battery radiator is in direct or indirect contact with the tabs provided on the battery cell body, so that the heat generated by the battery management system and the battery cell body is dissipated through conduction to the battery radiator.

[0020] In one possible implementation, the bottom surface of the battery radiator is in thermal contact with the battery cell body through a heat conductor, one side of the heat conductor is in contact with the battery cell body, and the other side of the heat conductor is in contact with a reserved groove of the battery radiator.

[0021] In one possible implementation, an adapter plate is further provided on the battery cell body, a lead row is provided on the adapter plate, the tabs extend to the adapter plate, and at least part of the tabs are electrically connected to the lead row on the adapter plate.

[0022] In one possible implementation, the battery radiator is located on the adapter plate, and the lead row extends above the battery radiator through a first reserved hole opened on the battery radiator;

[0023] An insulating layer is provided between the bottom surface of the battery radiator and the adapter plate.

[0024] In one possible implementation, the lower end of the upper cover abuts against the upper limit groove of the battery radiator, the lower limit groove of the battery radiator abuts against the upper end of the shell, and the battery radiator is connected to the shell via fasteners.

[0025] In one possible implementation, an interface is provided on one side of the upper cover.

[0026] The battery radiator provided by the present invention has a simple structure, which is convenient for cooling and dissipating the temperature of the tabs, and also convenient for installing and fixing the battery management system. It fully utilizes the space inside the battery radiator to fix the battery management system, cools and dissipates the temperature of the battery management system, and is beneficial to improving the heat dissipation effect of the battery.

[0027] In a battery pack provided by the present invention, an insulating layer is provided between the bottom surface of the battery radiator and the adapter plate, which has an insulating and protective effect. Therefore, the bottom surface of the battery radiator can directly contact the tab, which can both conduct heat and provide insulating protection, optimize the heat dissipation path, realize efficient thermal management, and improve the service life of the battery pack.

[0028] In the battery pack provided by the present invention, since the battery management system is in contact with the bottom surface of the concave cavity of the battery radiator, the battery management system can quickly transfer heat to the battery radiator, thereby effectively reducing the temperature of the control components on the battery management system and ensuring the stable operation of the battery management system.

[0029] In the battery pack provided by the present invention, the bottom surface of the battery radiator is in thermal contact with the tabs provided on the battery cell body. The tabs on the battery cell body can transfer heat to the battery radiator, thereby reducing the thermal resistance of heat transfer from the tabs to the battery radiator. By providing the battery radiator, efficient heat dissipation is achieved, the tabs are cooled, the heat dissipation cost of the battery pack is reduced, and the battery pack is facilitated to be lightweight.

[0030] In addition to the technical problems solved by the embodiments of the present invention described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by a battery radiator and a battery pack provided by the embodiments of the present invention, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0032] Figure 1 A schematic diagram of the three-dimensional structure of a battery radiator provided in an embodiment of the present invention;

[0033] Figure 2 A schematic diagram of another three-dimensional structure of a battery radiator provided by an embodiment of the present invention;

[0034] Figure 3 This is an installation effect diagram of a battery radiator provided by an embodiment of the present invention;

[0035] Figure 4 A rendering of the installation effect of the battery radiator and tab provided in an embodiment of the present invention;

[0036] Figure 5 An exploded view of a battery pack according to an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 10-battery radiator;

[0039] 11- Ventilation holes;

[0040] 12-heat sink fins;

[0041] 13-Bottom surface;

[0042] 131-insulating layer;

[0043] 14-concave cavity;

[0044] 141-upper limit slot;

[0045] 15-reserved slot;

[0046] 16-first reserved hole;

[0047] 17- second reserved hole;

[0048] 18-Mounting column;

[0049] 181-connection hole;

[0050] 182-through slot;

[0051] 19-lower limit slot;

[0052] 20-battery cell body;

[0053] 21- ear;

[0054] 30-upper cover;

[0055] 31-Interface;

[0056] 40-Battery management system;

[0057] 50- adapter plate;

[0058] 51-lead row;

[0059] 60-housing;

[0060] 70-Heat conducting parts. DETAILED DESCRIPTION

[0061] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0062] When the battery pack is working, the main heat-generating part is the battery cell body. At the same time, the tabs and the battery management system also generate heat. The heat generated by the battery cell body can be dissipated through the battery shell, but due to the limitations of the battery pack structure layout, the heat generated by the tabs, the heat transferred from the battery cell to the tabs, and the heat generated by the battery management system are difficult to dissipate effectively. The large amount of heat accumulation causes a large temperature rise in the battery pack, shortening the service life of the battery pack, affecting the use of the battery in high-power and high-energy consumption scenarios such as drones. It is difficult to achieve sufficient heat dissipation for high-power, high-heat flux density battery packs under limited conditions.

[0063] Therefore, how to break through the limitations of the battery pack structure layout and improve the heat dissipation effect of the battery pack is one of the technical problems that need to be solved urgently.

[0064] In light of the foregoing background, the battery radiator and battery pack provided by the present invention feature at least one ventilation hole defined on the side of the battery radiator, enabling air to circulate through the hole. Furthermore, a plurality of heat dissipation fins are provided within the at least one ventilation hole, thereby increasing the contact area between the air flowing through the hole and the battery radiator, thereby enhancing heat dissipation. In the battery pack provided by the present invention, since the bottom surface of the battery radiator is in direct or indirect contact with the tab, heat from the tab can be transferred to the battery radiator for timely dissipation, preventing heat accumulation that could affect the battery pack's service life.

[0065] The battery radiator and battery pack provided by embodiments of the present invention are described below with reference to the accompanying drawings.

[0066] refer to Figure 1 and Figure 2 As shown, the present invention provides a battery radiator 10 for thermally contacting the battery tab 21. The battery radiator 10 is provided with a plurality of heat dissipation fins 12. The plurality of heat dissipation fins 12 are used to increase the heat dissipation area of ​​the battery radiator 10, accelerate heat dissipation, and thus improve the heat dissipation effect.

[0067] At least one ventilation hole 11 is formed on a side surface of the battery radiator 10 . The at least one ventilation hole 11 passes through both sides of the battery radiator 10 . A plurality of heat dissipation fins 12 are disposed in the at least one ventilation hole 11 .

[0068] refer to Figure 1 and Figure 4As shown, a battery radiator 10 provided in an embodiment of the present invention is used to achieve heat dissipation of the battery tab 21. At least one ventilation hole 11 is provided on the side of the battery radiator 10 to facilitate external air to enter the ventilation hole 11 from the side of the radiator 10 and take away the heat conducted from the battery tab 21 to the battery radiator 10; the ventilation hole 11 runs through both sides of the battery radiator 10, which helps to form an air circulation channel in the ventilation hole 11. Air can enter the ventilation hole 11 from both sides of the battery radiator 10, so that the air can circulate quickly in the ventilation hole 11, take away the heat conducted to the battery radiator 10, and improve the heat dissipation efficiency. In addition, a plurality of heat dissipation fins 12 are provided in at least one ventilation hole 11 to accelerate heat dissipation, thereby improving the heat dissipation effect.

[0069] It is easy to understand that the battery radiator 10 is in thermal contact with the battery tab 21 , so the heat generated by the battery tab 21 and the heat transferred from the battery cell body 20 to the tab 21 can be transferred to the battery radiator 10 to achieve heat exchange.

[0070] In one possible implementation, reference Figure 1 and Figure 2 As shown, the battery radiator 10 has two ventilation holes 11 arranged side by side. Each of the two ventilation holes 11 is provided with a plurality of heat dissipation fins 12. The plurality of heat dissipation fins 12 are vertically oriented. The number of heat dissipation fins 12 can be 5, 7, 10, etc. The number of heat dissipation fins 12 is set according to the actual use requirements and is not specifically limited here.

[0071] Several heat dissipation fins 12 are arranged longitudinally and spaced apart from each other, with the upper and lower ends of each of the heat dissipation fins 12 connected to the inner wall of the ventilation hole 11. This structure facilitates the rapid and uniform transfer of heat from the battery tabs 21 to the battery radiator 10 to the heat dissipation fins 12, allowing the air flowing into the ventilation hole 11 to carry away the heat transferred to the heat dissipation fins 12, accelerating the exchange of heat with the outside air and improving the heat dissipation effect. Furthermore, the heat dissipation fins 12 each extend from one end of at least one ventilation hole 11 to the other end of at least one ventilation hole 11, allowing the heat dissipation fins 12 to fully utilize the limited space within the ventilation hole 11 to expand the heat dissipation area of ​​the heat dissipation fins 12, thereby improving heat dissipation efficiency and facilitating rapid cooling.

[0072] Of course, in other embodiments, the side of the battery radiator 10 may be provided with more ventilation holes 11. The heat dissipation fins 12 may also be arranged at an angle, and the inclination directions of the heat dissipation fins 12 in the plurality of ventilation holes 11 may be the same or different.

[0073] refer to Figure 1 and Figure 3As shown, the top surface of the battery radiator 10 is provided with a recessed cavity 14 for accommodating the battery management system 40 (BMS). The recessed cavity 14 is located above the at least one vent hole 11 and is isolated from the at least one vent hole 11. The BMS 40 can be connected to the battery radiator 10 via screws. The recessed cavity 14 on the top of the battery radiator 10 provides installation space for the BMS 40, which is the battery control system that monitors the battery's usage status. This structure helps save installation space.

[0074] It is easy to understand that the battery management system 40 includes a control board and control components arranged on the control board. Therefore, the battery management system 40 will also generate heat when working. Since the cavity 14 accommodating the battery management system 40 is located above at least one ventilation hole 11, it is beneficial to conduct the heat generated by the battery management system 40 during operation to the heat dissipation fins 12 through the bottom surface of the cavity 14. The heat conducted to the heat dissipation fins 12 is carried away by the air circulation entering the ventilation holes 11, thereby ensuring the heat dissipation of the battery management system 40.

[0075] In a possible implementation, the battery radiator 10 may be in a cubic shape, and the cavity 14 is a downwardly concave rectangular cavity.

[0076] refer to Figure 2 and Figure 3 As shown, a first reserved hole 16 is provided in the concave cavity 14. Each of the first reserved holes 16 extends through the bottom of the concave cavity 14 and is isolated from the at least one vent hole 11. Alternatively, a pair of first reserved holes 16 are provided in the concave cavity 14. Each of the pair of first reserved holes 16 extends through the bottom of the concave cavity 14 and is isolated from the at least one vent hole 11. The first reserved holes 16 are used to pass through a lead bus 51 for internal battery connections. This facilitates the electrical connection of the lead bus 51 connected to the battery cell body 20 through the first reserved holes 16 to the battery management system 40. The first reserved holes 16 are primarily used for threading the lead bus 51.

[0077] In one possible implementation, the wires connected to the battery cell body 20 may be power lines or the like.

[0078] In a possible implementation, the first reserved holes 16 may be rectangular, elliptical, or other shapes, and a pair of first reserved holes 16 are respectively located at both ends of the length direction of the cavity 14 , thereby being isolated from one ventilation hole 11 .

[0079] A second reserved hole 17 is further provided in the cavity 14, and the second reserved hole 17 is isolated from the ventilation hole 11. The second reserved hole 17 is used for passing a communication line connected inside the battery.

[0080] In one possible implementation, the second reserved hole 17 can be in a rectangular, circular, elliptical or other shape, and there can be two second reserved holes 17. The second reserved hole 17 is located in the middle of the length direction of the cavity 14, and the two second reserved holes 17 are respectively located on both sides of the width direction of the cavity 14, so that the second reserved hole 17 and the ventilation hole 11 are isolated from each other.

[0081] The battery radiator 10 has a bottom surface 13 facing away from the concave cavity 14 . A reserved groove 15 is provided on the bottom surface 13 . The reserved groove 15 is located in the middle of the bottom surface 13 .

[0082] In a possible implementation, the reserved groove 15 is a rectangular groove that is recessed toward the bottom surface 13 . Of course, the reserved groove 15 may also be an elliptical shape. The reserved groove 15 is located between the two second reserved holes 17 .

[0083] refer to Figure 3 and Figure 4 As shown, the reserved groove 15 is used to accommodate the heat conducting member 70 in contact with the tab 21, ensuring that the heat conducting member 70 is in contact with the battery radiator 10. In this way, the heat generated by the tab 21 can be transferred to the battery radiator 10 through the heat conducting member 70, and then the battery radiator 10 can achieve heat exchange with the outside world. The heat conducting member 70 can be a thermal pad, for example, in the shape of a strip.

[0084] refer to Figure 1 and Figure 2 As shown, the top surface of the battery radiator 10 is further provided with an upper limit groove 141, which is recessed inwardly along the wall thickness direction of the battery radiator 10. The upper limit groove 141 is used to limit the position of the upper cover 30 of the battery installed on the battery radiator 10.

[0085] A pair of mounting posts 18 are provided at both ends of the battery radiator 10 . Side walls of the mounting posts 18 are connected to both end surfaces of the battery radiator 10 . Connecting holes 181 are defined in the mounting posts 18 .

[0086] A pair of mounting posts 18 may be located at both ends of the battery radiator 10 in the width direction, and a through slot 182 is provided between the pair of mounting posts 18 . The connecting hole 181 may be a threaded hole, so as to facilitate mounting the battery radiator 10 on the battery housing 60 by screws.

[0087] A lower limiting groove 19 is formed at the bottom of the mounting post 18 . The lower limiting groove 19 is used to limit the installation position of the battery radiator 10 when the battery radiator 10 is installed.

[0088] A battery radiator 10 provided in an embodiment of the present invention has a simple structure, which is convenient for cooling and dissipating the battery tabs 21, and also convenient for installing and fixing the battery management system 40. It fully utilizes the space inside the battery radiator 10 to fix the battery management system 40, cools and dissipates the battery management system 40, and is beneficial to improving the heat dissipation effect of the battery.

[0089] The battery radiator 10 provided in the embodiment of the present invention is conveniently installed and fixed on the battery by providing a pair of mounting posts 18 , and is convenient for fixing the battery radiator 10 to the battery housing 60 .

[0090] On the basis of the above, refer to Figure 3 and Figure 5 As shown, an embodiment of the present invention further provides a battery pack, including a shell 60, a battery cell body 20, a battery management system 40, an upper cover 30 and the above-mentioned battery radiator 10, the battery cell body 20 is accommodated in the shell 60, the battery radiator 10 is arranged on the shell 60, the battery management system 40 is accommodated in a concave cavity 14 opened at the top of the battery radiator 10, and the upper cover 30 is arranged on the battery radiator 10.

[0091] The battery management system 40 is in contact with the bottom surface of the cavity 14, and the bottom surface 13 of the battery heat sink 10 is in direct or indirect contact with the tabs 21 provided on the battery cell body 20. This allows the heat generated by the battery management system 40 and the battery cell body 20 to be dissipated through conduction to the battery heat sink 10. Heat can be transferred from the high-temperature tabs 21 to the low-temperature battery heat sink 10.

[0092] In one possible implementation, the bottom surface 13 of the battery radiator 10 abuts against the tab 21 provided on the battery cell body 20, thereby directly exchanging heat between the battery radiator 10 and the tab 21, which helps to transfer heat from the high-temperature tab 21 to the low-temperature battery radiator 10 until the heat is balanced, thereby improving the heat dissipation effect of the tab 21.

[0093] In another possible implementation, heat is transferred between the bottom surface 13 of the battery radiator 10 and the tab 21 arranged on the battery cell body 20 through a heat conductor 70 or a heat-conducting adhesive, so that the tab 21 with a higher temperature conducts heat to the battery radiator 10 with a lower temperature through the heat conductor 70 or the heat-conducting adhesive. The heat conductor 70 or the heat-conducting adhesive can reduce the thermal resistance between the tab 21 and the battery radiator 10, conduct heat efficiently until the heat is balanced, and improve the heat dissipation effect of the tab 21.

[0094] In the battery pack provided by the embodiment of the present invention, at least one ventilation hole 11 is opened on the side of the battery radiator 10, and the ventilation hole 11 passes through the two sides of the battery radiator 10. A plurality of heat dissipation fins 12 are arranged in the ventilation hole 11. The heat dissipation fins 12 increase the heat dissipation area of ​​the battery surface and reduce the surface thermal resistance of the battery. Therefore, the heat conducted to the battery radiator 10 can be quickly dissipated to the outside, thereby improving the heat dissipation efficiency and heat dissipation effect. For high-power, high heat flux density batteries, it is ensured that the heat generated by the battery during operation can be dissipated to the outside in time, thereby avoiding the accumulation of a large amount of heat inside the battery cell body 20 and at the position of the tab 21, which affects the working efficiency of the battery pack and causes the working life of the battery pack to be shortened.

[0095] In the battery pack provided by the embodiment of the present invention, the battery management system 40 can be connected to the battery radiator 10 by screws, and the battery management system 40 is in contact with the bottom surface of the cavity 14, thereby effectively reducing the temperature of the control components on the battery management system 40 and ensuring the stable operation of the battery management system 40.

[0096] refer to Figure 3 and Figure 5 As shown, the upper cover 30 can be connected to the battery radiator 10 by screws, and the battery radiator 10 can be connected to the housing 60 by screws.

[0097] The bottom surface 13 of the battery heat sink 10 conducts heat to the battery cell body 20 via a thermally conductive member 70. One side of the thermally conductive member 70 is in contact with the battery cell body 20, while the other side of the thermally conductive member 70 is in contact with the reserved groove 15 of the battery heat sink 10. The thermally conductive member 70 can be a thermal pad that is used to reduce the thermal resistance between the battery cell body 20 and the battery heat sink 10, allowing heat generated by the battery cell body 20 to be directly transferred to the battery heat sink 10 through the thermally conductive member 70.

[0098] An adapter plate 50 is also provided on the cell body 20 , and a lead row 51 is provided on the adapter plate 50 . The tabs 21 extend to the adapter plate 50 , and at least part of the tabs 21 are electrically connected to the lead row 51 on the adapter plate 50 .

[0099] The battery radiator 10 is located on the adapter plate 50 , and the lead row 51 extends to the top of the battery radiator 10 through the first reserved hole 16 opened on the battery radiator 10 .

[0100] In one possible implementation, the lead bank 51 includes a positive lead bank and a negative lead bank. A pair of first reserved holes 16 are provided, and the positive lead bank and the negative lead bank extend upward from the pair of first reserved holes 16 to the battery radiator 10 .

[0101] refer to Figure 3 and Figure 4As shown, in order to improve the safety of use, an insulating layer 131 is provided between the bottom surface 13 of the battery radiator 10 and the adapter plate 50, so that the bottom surface 13 of the battery radiator 10 can directly contact the pole ear 21 extending to the adapter plate 50, which can both conduct heat and provide insulation protection, optimize the heat dissipation path of the pole ear 21, realize efficient thermal management of the battery cell body 20, and improve the service life of the battery pack.

[0102] The insulating layer 131 may be adhered to the bottom surface 13 of the battery heat sink 10 . The insulating layer 131 may be made of one or more of thermally conductive silicone, polyester resin (Polyethylene terephthalate, referred to as PET), and polymer (Positive Temperature Coefficient, referred to as PTC) materials to improve the insulation reliability and safety protection of the battery.

[0103] In a possible implementation, the lead bar 51 may be a copper bar or an aluminum bar.

[0104] In a battery pack provided by an embodiment of the present invention, a battery cell 20 is used to generate electricity. A battery management system 40 is the battery control system that monitors the battery's operating status. A housing 60 and a top cover 30 are used to protect the battery cell 20. The top cover 30 also protects the battery management system 40. The battery heat sink 10 effectively optimizes the heat dissipation path from the cell 20 to the outside world, achieving efficient thermal management and extending the battery's service life.

[0105] It is easy to understand that the tabs 21 include the positive tabs and the negative tabs in the battery cell body 20 that lead the electrical energy outward. There can be multiple thermal pads. One side of some thermal pads is attached to the side of the positive tab 21, and one side of another part of the thermal pads is attached to the side of the negative tab 21. The thermal pads enhance the heat conduction effect between the tabs 21 and the battery radiator 10.

[0106] In this embodiment, the thermal pad can be made of a thermally conductive material, such as thermally conductive silicone.

[0107] It is easy to understand that after the positive electrode tab and the negative electrode tab are connected in series, the positive terminal formed is connected in series with the positive electrode lead bank, and the negative terminal formed is connected in series with the negative electrode lead bank.

[0108] The lower end of the upper cover 30 abuts against the upper limit groove 141 of the battery radiator 10, and the lower limit groove 19 of the battery radiator 10 abuts against the upper end of the housing 60. The battery radiator 10 is connected to the housing 60 via fasteners. The upper limit groove 141 is used to limit the upper cover 30 when it is installed, and the lower limit groove 19 is used to limit the battery radiator 10 when it is installed on the housing 60.

[0109] In one possible implementation, the fastener may be a screw.

[0110] An interface 31 is provided on one side of the upper cover 30 . The interface 31 is used to connect an external device so that the external device is electrically connected to the battery management system 40 .

[0111] The battery pack provided in the embodiment of the present invention can meet the use requirements of the drone in high-power working conditions such as continuous flight. In the high-power operating state, the battery radiator 10 provides cooling and heat dissipation effects for the battery, thereby avoiding the impact on the service life due to excessive battery temperature rise.

[0112] In the battery pack provided by the embodiment of the present invention, the thermal resistance of heat transfer of the battery cell body 20 can be effectively reduced. The bottom surface 13 of the battery radiator 10 contacts the tab 21 provided on the battery cell body 20 through the heat conductor 70, thereby reducing the thermal resistance of heat transfer from the tab 21 to the battery radiator 10. By providing the battery radiator 10, efficient heat dissipation is achieved, the heat dissipation cost of the battery is reduced, and it is conducive to lightweighting the battery.

[0113] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "axial", "circumferential" and the like used to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the position or component referred to must have a specific orientation, a specific structure and operation, and therefore cannot be understood as limiting the present invention.

[0114] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0115] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed," etc. should be understood broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections, or communication; direct or indirect connections through an intermediate medium, or internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0116] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery radiator, characterized in that: The battery radiator (10) is provided with a plurality of heat dissipation fins (12) for thermally contacting the battery tab (21); A plurality of ventilation holes (11) are provided on the side of the battery radiator (10), the plurality of ventilation holes (11) pass through both side surfaces of the battery radiator (10), and the plurality of heat dissipation fins (12) are arranged in the plurality of ventilation holes (11); The top surface of the battery radiator (10) is provided with a cavity (14) for accommodating a battery management system (40); the cavity (14) is located above the plurality of ventilation holes (11) and is isolated from the plurality of ventilation holes (11).

2. The battery radiator according to claim 1, characterized in that: The plurality of heat dissipation fins (12) are arranged longitudinally and spaced apart from each other, and upper and lower ends of the plurality of heat dissipation fins (12) are connected to the inner wall of the ventilation hole (11); The plurality of heat dissipation fins (12) extend from one end of the plurality of ventilation holes (11) to the other end of the plurality of ventilation holes (11).

3. The battery radiator according to claim 2, characterized in that: A first reserved hole (16) is provided in the concave cavity (14), the first reserved holes (16) all pass through the bottom of the concave cavity (14), and the first reserved holes (16) are all isolated from the plurality of ventilation holes (11); A second reserved hole (17) is further provided in the concave cavity (14), and the second reserved hole (17) and the ventilation hole (11) are isolated from each other.

4. The battery radiator according to claim 2, characterized in that: The battery radiator (10) has a bottom surface (13) facing away from the concave cavity (14), and a reserved groove (15) is provided on the bottom surface (13).

5. The battery radiator according to any one of claims 1 to 4, characterized in that: An upper limit groove (141) is further provided on the top surface of the battery radiator (10), and the upper limit groove (141) is recessed inwardly along the wall thickness direction of the battery radiator (10).

6. The battery radiator according to any one of claims 1 to 4, characterized in that: Both ends of the battery radiator (10) are provided with a pair of mounting posts (18), and both mounting posts (18) are provided with connection holes (181); A lower limiting groove (19) is provided at the bottom of the mounting column (18).

7. A battery pack, characterized in that: The battery radiator (10) comprises a housing (60), a battery cell body (20), a battery management system (40), an upper cover (30), and a battery radiator (10) according to any one of claims 1 to 6, wherein the battery cell body (20) is accommodated in the housing (60), the battery radiator (10) is arranged on the housing (60), the battery management system (40) is accommodated in a cavity (14) opened at the top of the battery radiator (10), and the upper cover (30) is arranged on the battery radiator (10); The battery management system (40) is in contact with the bottom surface of the cavity (14), and the bottom surface (13) of the battery radiator (10) is in direct or indirect contact with the tab (21) provided on the battery cell body (20), so that heat generated by the battery management system (40) and the battery cell body (20) is dissipated through conduction to the battery radiator (10).

8. The battery pack according to claim 7, characterized in that: The bottom surface (13) of the battery radiator (10) is in thermal contact with the battery cell body (20) via a heat conducting member (70), one side of the heat conducting member (70) is in contact with the battery cell body (20), and the other side of the heat conducting member (70) is in contact with the reserved groove (15) of the battery radiator (10).

9. The battery pack according to claim 7, characterized in that: An adapter plate (50) is further provided on the cell body (20), a lead row (51) is provided on the adapter plate (50), the pole tab (21) extends onto the adapter plate (50), and at least a portion of the pole tab (21) is electrically connected to the lead row (51) on the adapter plate (50).

10. The battery pack according to claim 9, characterized in that: The battery radiator (10) is located on the adapter plate (50), and the lead row (51) extends to the top of the battery radiator (10) through a first reserved hole (16) opened on the battery radiator (10); An insulating layer (131) is provided between the bottom surface (13) of the battery radiator (10) and the adapter plate (50).

11. The battery pack according to claim 10, characterized in that: The lower end of the upper cover (30) abuts against the upper limit groove (141) of the battery radiator (10), the lower limit groove (19) of the battery radiator (10) abuts against the upper end of the shell (60), and the battery radiator (10) is connected to the shell (60) via fasteners.

12. The battery pack according to claim 7, wherein: An interface (31) is provided on one side of the upper cover (30).

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