Battery and electric equipment

Abstract

The utility model provides a battery and electric equipment. The battery comprises a shell, a battery body, a first heat dissipation structure and a second heat dissipation structure, a cooling cavity and a heat dissipation cavity are formed in the shell, at least part of the battery body is arranged in the cooling cavity, cooling liquid in heat exchange contact with the battery body is arranged in the cooling cavity, and the first heat dissipation structure is arranged on one side of the cooling cavity and used for cooling the cooling liquid; at least part of the second heat dissipation structure is arranged in the heat dissipation cavity, an air passing structure is arranged between the cooling cavity and the heat dissipation cavity, and heat in the cooling cavity enters the heat dissipation cavity through the air passing structure so as to be discharged out of the shell under the action of the second heat dissipation structure, so that heat dissipation is performed on the battery body by adopting two ways of heat dissipation; the heat dissipation efficiency and the heat dissipation effect of the battery body are improved, so that the heat dissipation performance of the battery is improved, and the service life of the battery is relatively long.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a battery and an electrical device. Background Technology

[0002] Lithium batteries have advantages such as high energy density, long service life, and environmental friendliness. As an energy storage device, they are widely used in new energy vehicles, communication base stations, portable electrical appliances and other equipment.

[0003] Lithium batteries generate a lot of heat during use; however, the heat dissipation of lithium batteries is not good in related technologies, which affects the service life of lithium batteries. Utility Model Content

[0004] In view of this, the present invention aims to provide a battery and electrical device that can improve the heat dissipation problem of the battery and increase its service life to a certain extent.

[0005] In a first aspect, the present invention provides a battery, including a casing, a battery body, a first heat dissipation structure and a second heat dissipation structure;

[0006] The housing contains a cooling cavity and a heat dissipation cavity;

[0007] At least a portion of the battery body is disposed within the cooling chamber, which contains coolant. The coolant is in heat exchange contact with the battery body. The first heat dissipation structure is disposed on one side of the cooling chamber and is used to cool the coolant.

[0008] At least a portion of the second heat dissipation structure is disposed within the heat dissipation cavity, and an air passage structure is provided between the cooling cavity and the heat dissipation cavity. Heat in the cooling cavity enters the heat dissipation cavity through the air passage structure and is discharged to the outside of the housing under the action of the second heat dissipation structure.

[0009] Optionally, the first heat dissipation structure includes an extraction component and a cooling component;

[0010] The inlet of the extraction component is connected to the coolant outlet of the cooling chamber, and the outlet of the extraction component is connected to the coolant inlet of the cooling chamber. The cooling component is disposed between the extraction component and the coolant outlet to cool the coolant discharged through the coolant outlet.

[0011] Optionally, the inlet of the extraction component is connected to the outlet of the coolant through the outlet pipe, and the cooling component is disposed on the circumferential outer side of the outlet pipe to cool the coolant in the outlet pipe.

[0012] A first control valve is provided at the coolant outlet;

[0013] And / or, the outlet of the extractor is connected to the coolant inlet via an inlet pipe;

[0014] A second control valve is provided at the coolant inlet;

[0015] And / or, the coolant outlet and the coolant inlet are spaced apart along the height direction of the cooling chamber;

[0016] And / or, the extraction component includes a water pump.

[0017] Optionally, the second heat dissipation structure includes a heat sink and a first heat dissipation hole;

[0018] The heat sink is disposed inside the heat dissipation cavity, and the first heat dissipation hole is formed on the cavity wall of the heat dissipation cavity. The first heat dissipation hole communicates with the outside, and the heat inside the heat dissipation cavity is discharged through the first heat dissipation hole under the action of the heat sink.

[0019] Optionally, the second heat dissipation structure further includes a driving component, which is connected to the housing, and the heat dissipation component is connected to the driving shaft of the driving component to drive the heat dissipation component to rotate;

[0020] At least a portion of the drive components are disposed on the outside of the housing, and the drive components are covered by a first protective cover, which is connected to the housing.

[0021] And / or, the heat sink includes a cooling fan;

[0022] And / or, the heat sink and the first heat sink hole are respectively disposed on two opposite side walls of the heat sink cavity;

[0023] And / or, there are at least two first heat dissipation holes, and at least two first heat dissipation holes are disposed at least at intervals along the width direction of the housing on the cavity wall of the heat dissipation cavity;

[0024] And / or, the outer cover of the heat sink is provided with a second protective cover, which is connected to the cavity wall of the heat sink cavity.

[0025] Optionally, a partition is provided inside the housing, and the outer edge of the partition is sealed to the inner wall of the housing to divide the inner cavity of the housing into the cooling cavity and the heat dissipation cavity, and the air passage structure is provided on the partition.

[0026] Optionally, the separator is provided with a mounting hole, the battery body passes through the mounting hole and is sealed to the mounting hole;

[0027] The battery body, the separator, and the cavity wall of the cooling chamber are all detachably connected;

[0028] And / or, a support member is provided on the inner wall of the housing, and the partition member is connected to the support member.

[0029] Optionally, the gas passage structure includes a second heat dissipation hole and a gas passage liquid-blocking film;

[0030] The second heat dissipation hole is disposed between the cooling cavity and the heat dissipation cavity, and is connected to the cooling cavity and the heat dissipation cavity respectively. The gas-blocking liquid film covers at least one side of the second heat dissipation hole.

[0031] And / or, there are at least two venting structures, and the at least two venting structures are arranged at least circumferentially around the housing.

[0032] Optionally, the battery body includes a mounting plate and at least two battery cells;

[0033] At least two of the battery cells are spaced apart along the length of the housing on one side of the mounting plate, with one end of each battery cell connected to the mounting plate and the other end of each battery cell connected to the wall of the cooling chamber.

[0034] Optionally, a first handle is provided on the side of the mounting plate opposite to the battery cell;

[0035] And / or, the mounting plate is provided with at least two third heat dissipation holes, and the at least two third heat dissipation holes are provided at least circumferentially spaced along the mounting plate;

[0036] And / or, the circumferential outer edge of the mounting plate is spaced apart from the cavity wall of the heat dissipation cavity.

[0037] Optionally, the housing includes a hollow box and a cover that is openable and closable connected to the box;

[0038] The venting structure is disposed inside the box, the cooling cavity is located on the side of the venting structure away from the cover, and the heat dissipation cavity is located on the side of the venting structure facing the cover.

[0039] The heat dissipation cavity is located above the cooling cavity;

[0040] And / or, a second handle is provided on the side of the cover opposite to the venting structure.

[0041] Secondly, this utility model provides an electrical device, including the battery as described above.

[0042] The battery and electrical device provided by this utility model have a cooling chamber and a heat dissipation chamber inside the casing. At least a portion of the battery body is placed in the cooling chamber, and coolant is placed in the cooling chamber, allowing the coolant to exchange heat with the battery body. A first heat dissipation structure is provided on one side of the cooling chamber to cool the coolant. At least a portion of the second heat dissipation structure is placed in the heat dissipation chamber, and an air passage structure is provided between the cooling chamber and the heat dissipation chamber, allowing heat from the cooling chamber to enter the heat dissipation chamber through the air passage structure and be discharged to the outside of the casing by the action of the second heat dissipation structure. Since the coolant is in direct contact with the battery body, the heat of the battery body can be directly transferred to the coolant for heat exchange during battery operation. In other words, the coolant can absorb the heat generated by the battery body during operation, thereby dissipating heat and cooling the battery body in a timely manner. Since the first heat dissipation structure can cool the coolant, if the coolant absorbs a lot of heat, the first heat dissipation structure can cool the coolant to ensure the heat dissipation effect of the coolant on the battery body. In this way, the first heat dissipation structure and the coolant form a heat dissipation system, improving the heat dissipation efficiency of the battery body and helping to extend the battery's service life.

[0043] Furthermore, because an air passage structure is provided between the cooling chamber and the heat dissipation chamber, heat from the cooling chamber can enter the heat dissipation chamber through the air passage structure. Therefore, during the operation of the battery, the heat of the battery body can also enter the heat dissipation chamber through the air passage structure and be discharged to the outside of the casing under the action of the second heat dissipation structure, forming another heat dissipation, thereby further cooling the battery body. In this way, the battery body is cooled by dual heat dissipation, which further improves the heat dissipation efficiency and effect of the battery body, and thus further extends the battery's service life. Attached Figure Description

[0044] Figure 1 This is an isometric view of a battery according to an embodiment of the present invention;

[0045] Figure 2 This is an axonometric sectional view of a battery according to an embodiment of the present invention;

[0046] Figure 3 This is a cross-sectional view of a partial structure of the battery according to an embodiment of the present invention;

[0047] Figure 4 This is an axonometric sectional view of a partial structure of the battery according to an embodiment of the present invention;

[0048] Figure 5 This is an isometric view of the battery body in an embodiment of the present invention.

[0049] The components are as follows: 1. Shell; 11. Box body; 12. Cover; 13. Cooling chamber; 131. Coolant outlet; 132. Coolant inlet; 133. Mounting slot; 14. Heat dissipation chamber; 2. Battery body; 21. Mounting plate; 22. Battery cell; 23. Third heat dissipation hole; 24. First handle; 3. First heat dissipation structure; 31. Extraction component; 32. Cooling component; 33. Outlet pipe; 34. Inlet pipe; 4. Second heat dissipation structure; 41. Heat dissipation component; 42. First heat dissipation hole; 43. Drive component; 5. Venting structure; 51. Second heat dissipation hole; 6. Second control valve; 71. Second protective cover; 72. First protective cover; 8. Separator; 81. Mounting hole; 9. Support component; 10. Second handle. Detailed Implementation

[0050] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0051] Lithium batteries have advantages such as high energy density, long service life, and environmental friendliness. As an energy storage device, they are widely used in new energy vehicles, communication base stations, portable electrical appliances and other equipment.

[0052] Lithium batteries generate a lot of heat during use; however, the heat dissipation of lithium batteries is not good in related technologies, which affects the service life of lithium batteries.

[0053] Based on this, this utility model provides a battery and electrical device. By providing a cooling chamber and a heat dissipation chamber within the casing, at least a portion of the battery body is placed in the cooling chamber, directly exchanging heat with the coolant within. A first heat dissipation structure cools the coolant, forming one stage of heat dissipation. An air passage structure is provided between the cooling chamber and the heat dissipation chamber, allowing heat from the battery body to enter the heat dissipation chamber and be expelled from the casing by a second heat dissipation structure within the heat dissipation chamber, forming another stage of heat dissipation. This dual-stage cooling system improves the battery's heat dissipation efficiency and effect, resulting in better heat dissipation performance and extended battery life.

[0054] The battery and electrical device provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments:

[0055] refer to Figures 1 to 5 As shown, this embodiment provides a battery, which includes a casing 1, a battery body 2, a first heat dissipation structure 3, and a second heat dissipation structure 4.

[0056] For details, please refer to Figure 2 and Figure 3 As shown, the housing 1 has a cooling cavity 13 and a heat dissipation cavity 14. At least a portion of the battery body 2 is disposed in the cooling cavity 13, which is filled with coolant. The coolant is in heat exchange contact with the battery body 2. A first heat dissipation structure 3 is disposed on one side of the cooling cavity 13 and is used to cool the coolant. At least a portion of the second heat dissipation structure 4 is disposed in the heat dissipation cavity 14. An air passage structure 5 is provided between the cooling cavity 13 and the heat dissipation cavity 14. Heat in the cooling cavity 13 enters the heat dissipation cavity 14 through the air passage structure 5 and is then dissipated to the outside of the housing 1 by the action of the second heat dissipation structure 4.

[0057] By providing a cooling chamber 13 inside the housing 1, at least a portion of the battery body 2 is disposed inside the cooling chamber 13, and coolant is provided inside the cooling chamber 13, so that the coolant and the battery body 2 are in direct contact for heat exchange. In this way, the heat generated by the battery body 2 during operation can be directly transferred to the coolant for heat exchange, that is, the coolant can absorb the heat generated by the battery body 2 during operation.

[0058] Moreover, by making the coolant directly contact the battery body 2, the heat exchange efficiency of the coolant to the battery body is high, and the heat generated by the battery body 2 during operation can be dissipated in a timely manner.

[0059] Meanwhile, by providing a first heat dissipation structure 3 on one side of the cooling chamber 13, the first heat dissipation structure 3 is used to cool the coolant, ensuring that the coolant is always kept within a preset temperature range, thus providing a better heat dissipation effect for the battery body 2. The coolant and the first heat dissipation structure 3 form the first heat dissipation layer for the battery body 2, which to a certain extent avoids heat accumulation in the battery body 2, improves the heat dissipation efficiency and effect of the battery body 2, and helps to extend the battery's service life.

[0060] In some implementations, if the coolant absorbs a lot of heat from the battery body 2 and its temperature rises, the first heat dissipation structure 3 can cool the coolant in time, reducing its temperature to within a preset temperature range. This avoids the phenomenon that the coolant has poor heat dissipation due to absorbing too much heat, thus ensuring that the coolant always has a good heat dissipation effect on the battery body 2, and the first heat dissipation structure has good heat dissipation performance.

[0061] In other implementations, if the coolant temperature rises due to other factors, the first heat dissipation structure 3 can also cool the coolant to maintain a good heat dissipation effect on the battery body 2.

[0062] In some implementations, the first heat dissipation structure 3 can be located on the outside of the housing 1 for easy assembly. Of course, in other implementations, the first heat dissipation structure 3 can also be located inside the housing 1.

[0063] By providing a heat dissipation cavity 14 within the housing 1 and an air passage structure 5 between the heat dissipation cavity 14 and the cooling cavity 13, heat from the cooling cavity 13, such as the heat from the battery body 2, can enter the heat dissipation cavity 14 through the air passage structure 5. Furthermore, by providing a second heat dissipation structure 4 within the heat dissipation cavity 14, the heat from the cooling cavity 13 is exhausted to the outside of the housing 1 after entering the heat dissipation cavity 14 through the air passage structure 5. The air passage structure 5 and the second heat dissipation structure 4 together form a second heat dissipation system for the battery body 2, further preventing heat accumulation in the battery body 2, improving the heat dissipation efficiency and effect, and extending the battery's lifespan.

[0064] Based on this, the battery in this embodiment dissipates heat from the battery body 2 through two heat dissipation channels, thereby improving the heat dissipation efficiency and effect of the battery body 2, thus improving the heat dissipation performance of the battery and making the battery life longer.

[0065] It should be noted that the air passage structure 5 allows air to pass through, but not coolant. Specifically, air in the cooling chamber 13 can enter the heat dissipation chamber 14 through the air passage structure 5, and air in the heat dissipation chamber 14 can also enter the cooling chamber 13 through the air passage structure 5. The air passage structure 5 maintains airflow between the cooling chamber 13 and the heat dissipation chamber 14, allowing heat from the cooling chamber 13 to enter the heat dissipation chamber 14 through the air passage structure 5 and be discharged to the outside of the housing 1 under the action of the second heat dissipation structure 4. However, coolant in the cooling chamber 13 cannot enter the heat dissipation chamber 14 through the air passage structure 5, thus achieving a coolant seal on the housing 1.

[0066] The battery provided by this utility model has a cooling cavity 13 and a heat dissipation cavity 14 inside the casing 1. At least a portion of the battery body 2 is disposed in the cooling cavity 13, and coolant is disposed in the cooling cavity 13 so that the coolant directly contacts the battery body 2 for heat exchange. A first heat dissipation structure 3 is provided on one side of the cooling cavity 13 to cool the coolant. At least a portion of the second heat dissipation structure 4 is disposed in the heat dissipation cavity 14, and an air passage structure 5 is provided between the cooling cavity 13 and the heat dissipation cavity 14, allowing heat from the cooling cavity 13 to enter the heat dissipation cavity 14 through the air passage structure 5 and be discharged to the outside of the casing 1 by the action of the second heat dissipation structure 4. Because the coolant is in direct contact with the battery body 2, the heat of the battery body 2 can be directly transferred to the coolant for heat exchange during battery operation. In other words, the coolant can absorb the heat generated by the battery body 2 during operation, thereby dissipating heat and cooling the battery body 2. Since the first heat dissipation structure 3 can cool the coolant, when the coolant absorbs a lot of heat, the first heat dissipation structure 3 can cool the coolant to ensure the heat dissipation effect of the coolant on the battery body 2. The first heat dissipation structure 3 and the coolant form a heat dissipation system, which improves the heat dissipation efficiency of the battery body 2 and helps to extend the battery's service life.

[0067] Furthermore, since an air passage structure 5 is provided between the cooling chamber 13 and the heat dissipation chamber 14, heat in the cooling chamber 13 can enter the heat dissipation chamber 14 through the air passage structure 5, and the second heat dissipation structure 4 can exhaust the heat in the heat dissipation chamber 14 to the outside of the casing 1. Therefore, during the operation of the battery, the heat of the battery body 2 can also enter the heat dissipation chamber 14 through the air passage structure 5 and be exhausted to the outside of the casing 1 under the action of the second heat dissipation structure 4, thereby further cooling the battery body 2. In this way, the battery body 2 is cooled by dual heat dissipation, which further improves the heat dissipation efficiency and effect of the battery body 2, and further extends the service life of the battery.

[0068] refer to Figure 1 As shown, in some embodiments, the first heat dissipation structure 3 includes an extraction member 31 and a cooling member 32. The inlet of the extraction member 31 is connected to the coolant outlet 131 of the cooling chamber 13, and the outlet of the extraction member 31 is connected to the coolant inlet 132 of the cooling chamber 13. The cooling member 32 is disposed between the extraction member 31 and the coolant outlet 131 to cool and reduce the temperature of the coolant discharged through the coolant outlet 131.

[0069] By connecting the inlet of the extraction component 31 to the coolant outlet 131 of the cooling chamber 13 and connecting the outlet of the extraction component 31 to the coolant inlet 132 of the cooling chamber 13, when the extraction component 31 is working, the coolant in the cooling chamber 13 circulates sequentially through the coolant outlet 131, the extraction component 31, and the coolant inlet 132, thus forming a coolant circulation loop between the extraction component 31 and the cooling chamber 13.

[0070] Since a cooling component 32 is provided between the extraction component 31 and the coolant outlet 131, and the cooling component 32 is used to cool and lower the temperature of the coolant discharged from the coolant outlet 131, the cooling component 32 can cool and lower the temperature of the coolant discharged from the coolant outlet 131 after the coolant in the cooling chamber 13 is discharged through the coolant outlet 131, thereby achieving the cooling and lowering treatment of the coolant and thus cooling the coolant to a preset temperature range, ensuring that the coolant has a good heat dissipation and cooling effect on the battery body 2.

[0071] The coolant, after being cooled by the cooling component 32, returns to the cooling chamber 13 from the coolant inlet 132 under the action of the extraction component 31, and continues to exchange heat with the battery body 2, ensuring that the coolant has a good heat dissipation and cooling effect on the battery body 2, and achieving continuous heat dissipation and cooling of the battery body 2.

[0072] In some implementations, the extractor 31 can be, for example, a water pump.

[0073] Among them, the water pump can be a pressure pump, a centrifugal pump, etc.

[0074] The cooling component 32 may be, for example, a cooling box connected between the inlet of the extraction component 31 and the coolant outlet 131 of the cooling chamber 13.

[0075] refer to Figure 1 As shown, in some embodiments, the inlet of the extraction component 31 is connected to the coolant outlet 131 through the liquid outlet pipe 33, and the cooling component 32 is disposed on the circumferential outer side of the liquid outlet pipe 33 to cool and reduce the temperature of the coolant in the liquid outlet pipe 33.

[0076] The inlet of the extraction component 31 and the coolant outlet 131 of the cooling chamber 13 are connected by the liquid outlet pipe 33, making the layout of the extraction component 31 more flexible and the assembly more convenient.

[0077] In some implementations, a first control valve (not shown) is provided at the coolant outlet 131. The first control valve can control the opening and closing of the coolant outlet 131, the flow rate of the coolant in the coolant outlet 131, etc., thereby controlling the state of the coolant, such as turning on the coolant circulation state, turning off the coolant circulation state, and adjusting the flow rate of the coolant at the coolant outlet 131 during circulation, thus improving the flexibility and convenience of use.

[0078] In practice, the first control valve can be, for example, a solenoid valve or an angle valve.

[0079] Of course, the state of the coolant can also be adjusted using the extraction component 31.

[0080] In some other implementations, the first control valve may also be located on the outlet pipe 33.

[0081] refer to Figure 1 As shown, in some embodiments, the outlet of the extractor 31 is connected to the coolant inlet 132 via the inlet pipe 34.

[0082] The outlet of the extraction component 31 and the coolant inlet 132 of the cooling chamber 13 are connected by the liquid inlet pipe 34, making the layout of the extraction component 31 more flexible and the assembly more convenient.

[0083] In some implementations, a second control valve 6 is provided at the coolant inlet 132. The second control valve 6 can control the opening and closing of the coolant inlet 132, the flow rate of the coolant in the coolant inlet 132, etc., thereby controlling the state of the coolant, such as turning on the coolant circulation state, turning off the coolant circulation state, and adjusting the flow rate of the coolant in the coolant inlet 132 during circulation, thus improving the flexibility and convenience of use.

[0084] Of course, the cooling situation after the coolant is drawn out of the cooling chamber 13 can also be adjusted by the second control valve 6. For example, closing the second control valve 6 can make the coolant discharged to the outside of the cooling chamber 13 stay between the coolant outlet 131 and the coolant inlet 132 of the cooling chamber 13 for a certain period of time. This can increase the contact time between the coolant discharged to the outside of the cooling chamber 13 and the cooling component 32, thereby improving the cooling effect of the cooling component 32 on the coolant.

[0085] For example, the flow rate of the coolant in the coolant inlet 132 can be adjusted by the second control valve 6 so that the flow rate of the coolant in the coolant inlet 132 is less than the flow rate of the coolant in the coolant outlet 131. This makes the flow rate of the coolant discharged from the cooling chamber 13 greater than the flow rate of the coolant entering the cooling chamber 13. As a result, when the coolant circulates to the outside of the cooling chamber 13, it has more contact time with the cooling component 32 for cooling and temperature reduction, thereby improving the cooling and temperature reduction effect of the cooling component 32 on the coolant.

[0086] In some implementations, the coolant outlet 131 and the coolant inlet 132 are located along the height of the cooling chamber 13 (see reference). Figure 1 and Figure 2The coolant is spaced out in the Z direction, so that after circulating back to the cooling chamber 13, it has more heat exchange contact time with the battery body 2, which improves the heat exchange efficiency and effect of the coolant to the battery body 2.

[0087] For example, refer to Figure 1 As shown, along the height direction of the cooling chamber 13, the location of the coolant outlet 131 is lower than the location of the coolant inlet 132.

[0088] refer to Figure 2 and Figure 3 As shown, in some embodiments, the second heat dissipation structure 4 includes a heat sink 41 and a first heat dissipation hole 42. The heat sink 41 is disposed inside the heat dissipation cavity 14, and the first heat dissipation hole 42 is formed on the cavity wall of the heat dissipation cavity 14. The first heat dissipation hole 42 communicates with the outside, and the heat inside the heat dissipation cavity 14 is discharged through the first heat dissipation hole 42 under the action of the heat sink 41.

[0089] Some of the heat generated by the battery body 2 during operation enters the heat dissipation cavity 14 through the air structure 5. Since the heat dissipation cavity 14 is equipped with a heat dissipation component 41 and has a first heat dissipation hole 42 on its cavity wall, the heat dissipation component 41 can drive the air circulation in the heat dissipation cavity 14 when it is working. This allows the heat entering the heat dissipation cavity 14 through the air structure 5 to be discharged to the outside of the casing 1 through the first heat dissipation hole 42, thus achieving cooling of the battery body 2. The structure is simple and easy to manufacture.

[0090] An air inlet (not shown) is provided on the cavity wall of the heat dissipation cavity 14. For example, the air inlet can be located close to the heat dissipation component 41. When the heat dissipation component 41 is working, the outside air enters the heat dissipation cavity 14 through the air inlet and moves towards the first heat dissipation hole 42 under the action of the heat dissipation component 41, so that the air in the heat dissipation cavity 14 is kept circulating, thereby taking away the heat in the heat dissipation cavity 14 and discharging it to the outside through the first heat dissipation hole 42.

[0091] In a specific implementation, the heat sink 41 can be, for example, a cooling fan. Of course, in other implementations, the heat sink can also be, for example, an axial flow fan, a turbine fan, etc.

[0092] In some embodiments, a large hole may be formed on the cavity wall of the heat dissipation cavity 14, which is formed as a first heat dissipation hole 42.

[0093] Of course, in other embodiments, reference is made to Figure 2 and Figure 3 As shown, the cavity wall of the heat dissipation cavity 14 may be provided with a plurality of first heat dissipation holes 42, and the plurality of first heat dissipation holes 42 are at least along the width direction of the housing 1 (see reference). Figure 1 and Figure 2The Y-axis spacing in the heat dissipation cavity 14 is designed to facilitate the timely dissipation of heat.

[0094] In practice, some of the first heat dissipation holes 42 can be spaced out along the height direction of the housing 1.

[0095] For specific implementation, refer to Figure 2 and Figure 3 As shown, the first heat dissipation hole 42 can be a long strip hole, or it can be a circular hole, a diamond-shaped hole, etc.

[0096] Of course, in other embodiments, a larger hole may be provided on the cavity wall of the heat dissipation cavity 14, which is formed as the first heat dissipation hole 42.

[0097] In some embodiments, reference Figure 2 and Figure 3 As shown, the heat sink 41 and the first heat dissipation hole 42 are respectively disposed on two opposite side walls of the heat dissipation cavity 14. This arrangement makes the air convection effect in the heat dissipation cavity 14 better when the heat sink 41 is working, thereby driving more heat to be discharged to the outside of the housing 1 and improving the heat dissipation effect on the battery body 2.

[0098] refer to Figure 2 and Figure 3 As shown, in some embodiments, the second heat dissipation structure 4 further includes a driving member 43, which is connected to the housing 1. A heat dissipation member 41 is connected to the driving shaft of the driving member 43 to drive the heat dissipation member 41 to rotate.

[0099] By setting up a drive component 43 and connecting the heat sink 41 to the drive shaft of the drive component 43, the drive component 43 can drive the heat sink 41 to rotate when it is working, thereby allowing the air in the heat dissipation cavity 14 to circulate and the heat in the heat dissipation cavity 14 to be discharged from the first heat dissipation hole 42, which is convenient to use.

[0100] Of course, in other embodiments, the heat sink 41 may have its own drive unit that drives it to rotate.

[0101] In some implementations, the drive component 43 may be connected to the outer wall of the housing 1, the drive shaft of the drive component 43 passes through the cavity wall of the heat dissipation cavity 14 and is rotatably connected to the cavity wall of the heat dissipation cavity 14, and the heat dissipation component 41 is connected to the part of the drive shaft located inside the heat dissipation cavity 14.

[0102] Of course, in other implementations, the driver 43 can also be placed inside the heat dissipation cavity 14.

[0103] In a practical implementation, the driving component 43 can be, for example, a servo motor. Of course, the driving component 43 can also be, for example, a worm gear.

[0104] In some embodiments, reference Figure 2 and Figure 3 As shown, the outer cover of the heat sink 41 is provided with a second protective cover 72, which is connected to the cavity wall of the heat sink cavity 14.

[0105] By covering the heat sink 41 with a second protective cover 72, the second protective cover 72 provides a certain degree of protection for the heat sink 41, which helps to extend the service life of the heat sink 41. At the same time, during assembly, maintenance, and other processes, it can, to some extent, prevent the heat sink 41 from injuring workers, thus improving safety.

[0106] In a practical implementation, the second protective cover 72 can be bolted to the cavity wall of the heat dissipation cavity 14 for easy replacement. Of course, in other implementations, the second protective cover 72 can also be welded to the cavity wall of the heat dissipation cavity 14.

[0107] In some embodiments, reference Figure 1 As shown, the outer cover of the drive component 43 is provided with a first protective cover 71, which is connected to the housing 1. In this way, the first protective cover 71 provides a certain degree of protection for the drive component 43, which helps to extend the service life of the drive component 43. At the same time, it can prevent the drive component 43 from damaging surrounding components when rotating, thus improving the safety of use.

[0108] The first protective cover 71 can be fixed to the housing 1 by welding or bolting.

[0109] refer to Figures 2 to 4 As shown, in some embodiments, a partition 8 is provided inside the housing 1. The outer edge of the partition 8 is sealed to the inner wall of the housing 1 to divide the inner cavity of the housing 1 into a cooling cavity 13 and a heat dissipation cavity 14. The air passage structure 5 is provided on the partition 8. The structure is simple and easy to manufacture.

[0110] In practice, the separator 8 can be made of metal, which gives it a better heat dissipation effect. This allows the heat generated by the battery body 2 to be transferred to the heat dissipation cavity 14 through the separator 8, further improving the heat dissipation effect and efficiency of the battery.

[0111] In some implementations, the partition 8 may be a partition plate that matches the shape of the inner cavity of the housing 1.

[0112] refer to Figure 3 and Figure 3As shown, in some embodiments, the separator 8 is provided with a mounting hole 81, the battery body 2 passes through the mounting hole 81 and is sealed with the mounting hole 81. This allows a part of the battery body 2 to be arranged in the cooling chamber 13 for heat exchange with the coolant, and another part of the battery body 2 to be arranged in the heat dissipation chamber 14 for heat dissipation through the heat dissipation component 41. The layout is reasonable and the heat dissipation effect of the battery body 2 is good.

[0113] Furthermore, the separator 8 also serves to support the battery body 2, improving the connection stability of the battery body 2 within the casing 1 and making the battery structure more stable.

[0114] In some embodiments, the battery body 2 can be detachably connected to the separator 8 and the cavity wall of the cooling cavity 13.

[0115] In other words, the battery body 2 is detachably connected to the separator 8, and the battery body 2 is detachably connected to the cavity wall of the cooling chamber 13. In this way, if either the housing 1 or the battery body 2 is damaged and needs to be replaced, the battery body 2 can be removed from the separator 8 and the cavity wall of the cooling chamber 13, and the damaged one can be replaced. The installation and disassembly are convenient and easy to replace, while also saving replacement costs to a certain extent.

[0116] In a specific implementation, the battery body 2 passes through the mounting hole 81 of the separator 8 and is detachably connected to the mounting hole 81. When the battery body 2 is connected to the mounting hole 81, the battery body 2 and the mounting hole 81 are sealed together.

[0117] For example, the battery body 2 is provided with a sealing ring at the position corresponding to the mounting hole 81. When the battery body 2 is connected to the mounting hole 81, the sealing ring can, for example, stop the mounting hole 81 on the side facing the heat dissipation cavity 14.

[0118] refer to Figure 4 As shown, a mounting groove 133 is provided on the cavity wall of the cooling cavity 13 opposite to the heat dissipation cavity 14. The battery body 2 extends into the mounting groove 133 and is snapped together with the mounting groove 133.

[0119] In some embodiments, reference Figure 3 As shown, a support member 9 is provided on the inner wall of the housing 1, and the partition member 8 is connected to the support member 9 and sealed to the inner wall of the housing 1. In this way, the support member 9 provides support for the partition member 8, which facilitates the assembly of the partition member 8 inside the housing 1.

[0120] In practice, the support member 9 and the separator 8 can be connected together, for example, by a snap-fit.

[0121] In some implementations, the support member 9 can be integrally formed with the shell 1, resulting in higher structural strength and better load-bearing performance.

[0122] In other implementations, the support 9 can be fixed inside the housing 1 by means of welding or bolting.

[0123] refer to Figure 3 As shown, the support member 9 can be, for example, a support protrusion. For example, multiple support protrusions can be provided on the inner wall of the housing 1, and the multiple support protrusions are arranged at intervals along the circumference of the housing 1 on the inner wall of the housing 1.

[0124] In other implementations, the support member 9 may be, for example, a support ring arranged circumferentially along the housing 1.

[0125] refer to Figure 4 As shown, in some embodiments, the air passage structure 5 includes a second heat dissipation hole 51 and an air passage liquid-blocking film (not shown). The second heat dissipation hole 51 is disposed between the cooling cavity 13 and the heat dissipation cavity 14 and communicates with the cooling cavity 13 and the heat dissipation cavity 14 respectively, and the air passage liquid-blocking film covers at least one side of the second heat dissipation hole 51.

[0126] In a specific implementation, the second heat dissipation hole 51 can be opened on the partition 8, for example. One side of the second heat dissipation hole 51 is connected to the heat dissipation cavity 14, and the other side of the second heat dissipation hole 51 is connected to the cooling cavity 13. In this way, the heat dissipation cavity 14 and the cooling cavity 13 achieve air circulation through the second heat dissipation hole 51.

[0127] Furthermore, by providing an air-blocking liquid film on at least one side of the separator 8, and by covering the second heat dissipation hole 51 with the air-blocking liquid film, the air-blocking liquid film isolates the coolant in the cooling cavity 13, so that the coolant in the cooling cavity 13 will not enter the heat dissipation cavity 14, thus satisfying the battery's sealing requirements.

[0128] The gas-blocking liquid membrane can be connected to the separator 8 by means of ultrasonic welding or hot melt welding.

[0129] Among them, the gas-blocking liquid membrane can be, for example, a polytetrafluoroethylene microporous membrane or thermoplastic polyurethane, which has good waterproof and heat dissipation effects.

[0130] In some implementations, the partition 8 may be provided with multiple second heat dissipation holes 51, which may be spaced apart along the circumference of the partition 8 to facilitate the timely discharge of heat from the cooling chamber 13 and improve the heat dissipation efficiency and effect of the second heat dissipation.

[0131] In other embodiments, the housing may have an integrally formed partition wall, and the air passage structure may be disposed on the partition wall of the housing.

[0132] In some embodiments, reference Figure 3As shown, there are at least two air passage structures 5, and the at least two air passage structures 5 are arranged at least circumferentially along the shell 1 to facilitate the timely discharge of heat from the cooling chamber 13, thereby improving the heat dissipation efficiency and effect of the second heat dissipation.

[0133] refer to Figure 2 and Figure 5 As shown, in some embodiments, the battery body 2 includes a mounting plate 21 and at least two battery cells 22. The at least two battery cells 22 extend along the length of the housing 1 (see reference). Figure 1 and Figure 2 The cells (in the X direction) are spaced on one side of the mounting plate 21. One end of each battery cell 22 is connected to the mounting plate 21, and the other end of each battery cell 22 is connected to the cavity wall of the cooling cavity 13. In this way, multiple battery cells 22 can be assembled at the same time through the mounting plate 21. Compared with the solution of installing battery cells 22 one by one in the cooling cavity 13, the assembly convenience of battery cells 22 is improved.

[0134] In a specific implementation, multiple mounting slots 133 can be provided on the cavity wall of the cooling cavity 13 away from the heat dissipation cavity 14. The number of mounting slots 133 is the same as the number of battery cells 22. One mounting slot 133 corresponds to one battery cell 22. Each battery cell passes through the corresponding mounting slot 133 and is detachably connected to the corresponding mounting slot 133.

[0135] For example, during installation and removal, all battery cells 22 can be installed in or removed from their respective mounting slots 133 simply by holding the mounting plate 21, thus achieving simultaneous removal and installation of all battery cells 22.

[0136] In some implementations, refer to Figures 2 to 4 As shown, the separator 8 has multiple mounting holes 81, and the cooling cavity 13 has multiple mounting slots 133 on its cavity wall opposite to the heat dissipation cavity 14. The mounting holes 81, mounting slots 133, and battery cells 22 are arranged in a one-to-one correspondence. With this arrangement, when installing or disassembling, all battery cells 22 can be removed from or installed from the separator 8 and the cavity wall of the cooling cavity 13 simply by holding the mounting plate 21, making installation and disassembly convenient.

[0137] refer to Figure 2 As shown, in some embodiments, a first handle 24 is provided on the side of the mounting plate 21 opposite to the battery cell 22, so that the battery body 2 can be moved by holding the first handle 24, which facilitates installation and disassembly.

[0138] In some embodiments, reference Figure 5As shown, the mounting plate 21 is provided with at least two third heat dissipation holes 23. The at least two third heat dissipation holes 23 are arranged at least circumferentially along the mounting plate 21, which further facilitates the timely discharge of heat in the cooling cavity 13 and improves the heat dissipation efficiency and heat dissipation effect of the second heat dissipation.

[0139] In practice, the third heat dissipation hole 23 on the mounting plate 21 can be set to correspond with the second heat dissipation hole 51 on the partition 8. This shortens the air transmission path between the third heat dissipation hole 23 and the second heat dissipation hole 51, making it easier for heat to be discharged more quickly and further improving the heat dissipation efficiency and effect of the second heat dissipation.

[0140] In some embodiments, the circumferential outer edge of the mounting plate 21 is spaced apart from the cavity wall of the heat dissipation cavity 14 to facilitate assembly and heat dissipation.

[0141] refer to Figure 1 and Figure 2 As shown, in some embodiments, the housing 1 includes a hollow box body 11 and a cover 12 that is closable and connected to the box body 11. An air passage structure 5 is disposed inside the box body 11, a cooling cavity 13 is located on the side of the air passage structure 5 away from the cover 12, and a heat dissipation cavity 14 is located on the side of the air passage structure 5 facing the cover 12. The structure is simple and easy to manufacture and assemble. It also facilitates the replacement and maintenance of the battery body 2.

[0142] In some implementations, the cover 12 may be snapped together with the box 11. In other implementations, the cover 12 may be hinged to the box 11.

[0143] In some embodiments, the cover 12 is placed over the box 11, and the heat dissipation cavity 14 is located above the cooling cavity 13, which makes the air convection efficiency between the cooling cavity 13 and the heat dissipation cavity 14 better, which facilitates the heat of the battery body 2 to rise and dissipate, thereby improving the heat dissipation efficiency and heat dissipation effect of the second heat dissipation.

[0144] In some embodiments, reference Figure 1 and Figure 2 As shown, a second handle 10 is provided on the side of the cover 12 away from the air passage structure 5, which facilitates the movement and assembly of the housing 1.

[0145] This embodiment also provides an electrical device, which includes a battery.

[0146] In some implementations, the electrical equipment can be, for example, a vehicle.

[0147] In practice, the vehicles can be new energy vehicles such as pure electric vehicles, hybrid vehicles, and range-extended electric vehicles.

[0148] In other implementations, the electrical equipment can be, for example, electric vehicles, electric toys, ships, spacecraft, power tools, etc.

[0149] The battery in this embodiment has the same structure and implementation principle as the battery provided in the above embodiments, and can bring the same or similar technical effects. It will not be described in detail here. For details, please refer to the description of the above embodiments.

[0150] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection or an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, the terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0151] In this document, relational terms such as “first” and “second” are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0152] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications or equivalent substitutions made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery, characterized in that, It includes a casing (1), a battery body (2), a first heat dissipation structure (3), and a second heat dissipation structure (4); The housing (1) has a cooling cavity (13) and a heat dissipation cavity (14); At least a portion of the battery body (2) is disposed in the cooling chamber (13), the cooling chamber (13) is provided with coolant, the coolant is in heat exchange contact with the battery body (2), and the first heat dissipation structure (3) is disposed on one side of the cooling chamber (13) and is used to cool the coolant; At least part of the second heat dissipation structure (4) is disposed in the heat dissipation cavity (14), and an air passage structure (5) is disposed between the cooling cavity (13) and the heat dissipation cavity (14). The heat in the cooling cavity (13) enters the heat dissipation cavity (14) through the air passage structure (5) and is discharged to the outside of the housing (1) under the action of the second heat dissipation structure (4).

2. The battery according to claim 1, characterized in that, The first heat dissipation structure (3) includes an extraction component (31) and a cooling component (32); The inlet of the extraction component (31) is connected to the coolant outlet (131) of the cooling chamber (13), and the outlet of the extraction component (31) is connected to the coolant inlet (132) of the cooling chamber (13). The cooling component (32) is disposed between the extraction component (31) and the coolant outlet (131) to cool the coolant discharged through the coolant outlet (131).

3. The battery according to claim 2, characterized in that, The inlet of the extraction component (31) is connected to the coolant outlet (131) through the liquid outlet pipe (33), and the cooling component (32) is disposed on the circumferential outer side of the liquid outlet pipe (33) to cool the coolant in the liquid outlet pipe (33); A first control valve is provided at the coolant outlet (131); And / or, the outlet of the extractor (31) is connected to the coolant inlet (132) via the inlet pipe (34); A second control valve (6) is provided at the coolant inlet (132); And / or, the coolant outlet (131) and the coolant inlet (132) are spaced apart along the height direction of the cooling chamber (13); And / or, the extraction component (31) includes a water pump.

4. The battery according to claim 1, characterized in that, The second heat dissipation structure (4) includes a heat dissipation component (41) and a first heat dissipation hole (42); The heat sink (41) is disposed in the heat sink cavity (14), and the first heat sink (42) is opened on the cavity wall of the heat sink cavity (14). The first heat sink (42) communicates with the outside, and the heat in the heat sink cavity (14) is discharged through the first heat sink (42) under the action of the heat sink (41).

5. The battery according to claim 4, characterized in that, The second heat dissipation structure (4) further includes a driving member (43), which is connected to the housing (1). The heat dissipation member (41) is connected to the driving shaft of the driving member (43) to drive the heat dissipation member (41) to rotate. At least a portion of the drive member (43) is disposed on the outside of the housing (1), and the drive member (43) is covered by a first protective cover (71), which is connected to the housing (1). And / or, the heat sink (41) includes a cooling fan; And / or, the heat sink (41) and the first heat sink (42) are respectively disposed on two opposite side walls of the heat sink cavity (14); And / or, there are at least two first heat dissipation holes (42), and at least two first heat dissipation holes (42) are spaced apart on the cavity wall of the heat dissipation cavity (14) at least along the width direction of the housing (1); And / or, the outer cover of the heat sink (41) is provided with a second protective cover (72), which is connected to the cavity wall of the heat sink cavity (14).

6. The battery according to claim 1, characterized in that, The housing (1) is provided with a partition (8), the outer edge of the partition (8) is sealed to the inner wall of the housing (1) to divide the inner cavity of the housing (1) into the cooling cavity (13) and the heat dissipation cavity (14), and the air passage structure (5) is provided on the partition (8).

7. The battery according to claim 6, characterized in that, The separator (8) is provided with a mounting hole (81), and the battery body (2) passes through the mounting hole (81) and is sealed with the mounting hole (81); The battery body (2) is detachably connected to the partition (8) and the cavity wall of the cooling cavity (13); And / or, a support member (9) is provided on the inner wall of the housing (1), and the partition member (8) is connected to the support member (9).

8. The battery according to claim 1, characterized in that, The air passage structure (5) includes a second heat dissipation hole (51) and an air passage liquid-blocking film; The second heat dissipation hole (51) is disposed between the cooling cavity (13) and the heat dissipation cavity (14) and is connected to the cooling cavity (13) and the heat dissipation cavity (14) respectively. The gas-blocking liquid film covers at least one side of the second heat dissipation hole (51). And / or, there are at least two air passage structures (5), and at least two air passage structures (5) are arranged at least circumferentially along the housing (1).

9. The battery according to any one of claims 1 to 8, characterized in that, The battery body (2) includes a mounting plate (21) and at least two battery cells (22); At least two of the battery cells (22) are spaced apart along the length of the housing (1) on one side of the mounting plate (21), one end of each battery cell (22) is connected to the mounting plate (21), and the other end of each battery cell (22) is connected to the cavity wall of the cooling cavity (13).

10. The battery according to claim 9, characterized in that, A first handle (24) is provided on the side of the mounting plate (21) opposite to the battery cell (22); And / or, the mounting plate (21) is provided with at least two third heat dissipation holes (23), and the at least two third heat dissipation holes (23) are provided at least circumferentially spaced along the mounting plate (21); And / or, the circumferential outer edge of the mounting plate (21) is spaced apart from the cavity wall of the heat dissipation cavity (14).

11. The battery according to any one of claims 1 to 8, characterized in that, The housing (1) includes a hollow box (11) and a cover (12) that can be opened and closed and connected to the box (11); The air passage structure (5) is disposed inside the box body (11), the cooling cavity (13) is located on the side of the air passage structure (5) away from the cover body (12), and the heat dissipation cavity (14) is located on the side of the air passage structure (5) facing the cover body (12). The heat dissipation cavity (14) is located above the cooling cavity (13); And / or, a second handle (10) is provided on the side of the cover (12) opposite to the vent structure (5).

12. An electrical appliance, characterized in that, Includes the battery as described in any one of claims 1 to 11.

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