Shell and active heat dissipation energy storage lithium battery

Abstract

The invention relates to the technical field of batteries, discloses a shell and an active heat dissipation energy storage lithium battery, and aims to solve the problem that the service life of a battery assembly is affected due to damage of the battery assembly. Through the arrangement of the cover body, the inner shell and the buffer piece, the cover body and the inner shell are fixedly connected, and the cover body and the outer shell form sliding contact, so that when the subsequent outer shell is impacted, the impact force is applied to the inner shell through the buffer piece, and the inner shell drives the battery assembly and the cover body to synchronously move and extrudes the buffer piece in the moving direction to deform; therefore, impact energy borne by the inner shell is absorbed to a certain degree, and the probability that the battery assembly is damaged is further reduced through the actions.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a housing and an energy storage lithium battery with active heat dissipation. Background Art

[0002] An energy storage lithium battery is a battery in which multiple lithium battery units are fixed in a housing and are connected to each other in series or parallel.

[0003] Some existing energy storage lithium batteries, such as an energy storage lithium battery with a housing and active heat dissipation disclosed in the authorized announcement number CN117239322B, include a housing body, a cover portion, an inner frame, a bottom plate, a buffer roll, and a battery assembly. Among them, the upper end of the battery assembly is connected to the cover portion, the lower end of the battery assembly is connected to the bottom plate, the buffer roll is arranged between the inner frame and the housing body, and the cover portion is fixedly connected to the housing body. The impact energy is absorbed by the buffer roll, thereby reducing the impact damage suffered by the battery assembly.

[0004] However, in the above process, when the housing body is impacted, since the cover portion is fixedly connected to the housing body, when the impact force is transmitted to the inner frame, the inner frame will exert a thrust on the battery assembly, resulting in damage to the connection between the battery assembly and the cover portion, thereby affecting the service life of the battery assembly. Summary of the Invention

[0005] This application provides a housing and an energy storage lithium battery with active heat dissipation, which has the advantage of reducing the probability of damage to the battery assembly, and is used to solve the problem that the service life of the battery assembly is affected due to damage to the battery assembly.

[0006] To achieve the above object, this application adopts the following technical solutions: An energy storage lithium battery with a housing and active heat dissipation, comprising: a housing body, an inner housing is arranged in the cavity of the housing body, a buffer member is arranged between the housing body and the inner housing, the buffer member is made of an elastic material, insertion holes are equidistantly formed on the upper side surface of the bottom wall of the inner housing, a cover body is jointly arranged on the upper sides of the housing body and the inner housing, battery assemblies are fixedly installed on the lower side surface of the cover body at equal intervals, the lower ends of the battery assemblies are inserted into the insertion holes, a connection port is arranged on the upper side surface of the cover body, the cover body and the inner housing are fixedly connected, and the lower side surface of the cover body forms a sliding contact with the upper side surface of the housing body.

[0007] Further, mounting holes are respectively formed at the four corners of the upper side surface of the inner housing, bolts are respectively arranged inside the cover body at positions corresponding to the mounting holes, and the bolts are in threaded fixed connection with the mounting holes.

[0008] Further, heat dissipation windows are provided on both side walls of the outer shell body. The heat dissipation windows communicate the external environment with the inner cavity of the outer shell body. A partition net is fixedly installed in the heat dissipation windows. A fan is fixedly installed at the outer side position of one of the heat dissipation windows. Ventilation holes are penetrated through the side walls of the inner shell body.

[0009] Further, the buffer member is of a cylindrical structure, and both ends of the cylinder are open.

[0010] Further, the volumes of the four corners of the cavity between the outer shell body and the inner shell body are larger than the volume of a single buffer member, and there are spaces between the buffer members in the same direction.

[0011] Further, through holes are penetrated through the circumferential side of the buffer member at equal intervals.

[0012] Further, the upper part of the inner side wall of the outer shell body is an inward convex part, and an outward convex plate is fixedly installed at the lower part of the outer side wall of the inner shell body. The minimum distance between the inward convex part and the outward convex plate is smaller than the diameter of the buffer member, and the buffer member is located between the inward convex part and the outward convex plate.

[0013] Further, balls are rotatably arranged at equal intervals on the upper side surface of the bottom wall of the outer shell body corresponding to the position of the inner shell body, and the upper sides of the balls are in contact with the bottom wall of the inner shell body.

[0014] Further, there is a distance separated by the balls between the bottom wall of the inner shell body and the bottom wall of the outer shell body, and there is a distance in centimeters between adjacent balls.

[0015] Further, a blocking member is arranged in the cavity between the side wall of the outer shell body and the side wall of the inner shell body. The blocking member is arranged at the middle position around the inner shell body, and the outer side of the blocking member is fixedly connected to the inner wall of the outer shell body.

[0016] The present application has the following beneficial effects:

[0017] For an outer shell and an energy storage lithium battery with active heat dissipation provided by the present application, through the settings of the cover body, the inner shell body and the buffer member, the cover body and the inner shell body are fixedly connected, and the cover body and the outer shell body form a sliding contact. When the outer shell body is impacted subsequently, the impact force is applied to the inner shell body through the buffer member, so that the inner shell body drives the battery assembly and the cover body to move synchronously, and squeezes the buffer member in the moving direction to deform, so that the impact energy received by the inner shell body is absorbed to a certain extent. Through the above actions, the probability of damage to the battery assembly is reduced.

[0018] Through the settings of the buffer member and the inner shell body, during the process of the inner shell body squeezing the buffer member in the moving direction, the squeezed buffer member will drive the buffer members not in the moving direction of the inner shell body to deform synchronously, so that the impact energy received by the inner shell body is further absorbed, thereby further reducing the probability of damage to the battery assembly.

[0019] Through the arrangement of the buffer member and the inner housing, during the synchronous deformation of the buffer members not in the moving direction of the inner housing, the deformed buffer members will contact the inner housing after movement, thereby playing a certain role in clamping the inner housing. When the buffer members in the moving direction of the inner housing return to their original shape after deformation, it is not easy to drive the inner housing to move back a long distance, so that the battery assembly in the inner housing is not easily damaged by secondary impact.

[0020] When the device is installed on a moving device (such as a vehicle), with the start and stop of the moving device, the inner housing is affected by inertia force and thus squeezes the corresponding buffer members. By the movement and reset of the inner housing and the deformation and reset of the buffer members, the air inside the device further flows, thereby improving the heat dissipation effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings forming a part of the specification illustrate the embodiments disclosed in the present application and, together with the specification, are used to explain the principles disclosed in the present application.

[0022] Referring to the drawings, the present application can be more clearly understood according to the following detailed description, where:

[0023] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 is a schematic diagram of the connection state between the cover body and the battery assembly of the present invention;

[0025] Figure 3 is a schematic diagram of the internal structure of the outer housing of the present invention;

[0026] Figure 4 is a schematic diagram of the connection state between the inner housing and the outer convex plate of the present invention;

[0027] Figure 5 is a schematic diagram of the setting position of the ball of the present invention;

[0028] Figure 6 is a schematic diagram of the setting position of the blocking member of the present invention.

[0029] In the figure: 1. Outer housing; 2. Heat dissipation window; 3. Partition net; 4. Fan; 5. Inner housing; 6. Buffer member; 7. Vent hole; 8. Jack; 9. Cover body; 10. Battery assembly; 11. Connection port; 12. Mounting hole; 13. Bolt; 14. Outer convex plate; 15. Ball; 16. Blocking member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0031] Embodiment 1: Please refer to Figures 1 - 3 , a housing and an actively cooled energy storage lithium battery, including a housing body 1. An inner housing body 5 is arranged in the cavity of the housing body 1. A buffer member 6 is arranged between the housing body 1 and the inner housing body 5. The buffer member 6 is made of an elastic material (a wavy elastic plate can be used). Insertion holes 8 are equidistantly formed on the upper side surface of the bottom wall of the inner housing body 5. A cover body 9 is jointly arranged on the upper sides of the housing body 1 and the inner housing body 5. Battery assemblies 10 are fixedly installed equidistantly on the lower side surface of the cover body 9. The lower ends of the battery assemblies 10 are inserted into the insertion holes 8. A connection port 11 is arranged on the upper side surface of the cover body 9 (a combination of a plug, a shielding cover or a socket, a shielding cover in the prior art. Conductive structures are arranged inside the cover body 9 and the bottom wall of the inner housing body 5, not shown in the figure, for connecting the battery assemblies 10 in series or in parallel, so that the battery assemblies 10 can supply electric energy to associated devices or replenish electric energy from associated devices through the connection port 11). Mounting holes 12 are formed at the four corners of the upper side surface of the inner housing body 5. Bolts 13 are arranged inside the cover body 9 at positions corresponding to the mounting holes 12. The bolts 13 are threadedly fixed to the mounting holes 12. The lower side surface of the cover body 9 forms a sliding contact with the upper side surface of the housing body 1.

[0032] By fixedly connecting the cover body 9 and the inner housing body 5, and forming a sliding contact between the cover body 9 and the housing body 1, when the housing body 1 is impacted subsequently, the impact force is applied to the inner housing body 5 through the buffer member 6, so that the inner housing body 5 drives the battery assemblies 10 and the cover body 9 to move synchronously, and squeezes the buffer member 6 in the moving direction to deform, so that the impact energy received by the inner housing body 5 is absorbed to a certain extent. Compared with the original device, in this device, the inner housing body 5 and the cover body 9 move synchronously (since the structure connecting the associated device and the connection port 11 is a combination of a wire and a plug (or a socket), and since the wire has a certain elongation amount, the movement of the cover body 9 will not disconnect the connection between the connection port 11 and the associated device, thereby making the connection between this device and the associated device unaffected), thereby reducing the probability of damage to the battery assemblies 10.

[0033] Please refer to Figures 1 - 6, heat dissipation windows 2 are provided on both side walls of the outer casing 1. The heat dissipation windows 2 communicate the external environment with the inner cavity of the outer casing 1. A partition net 3 is fixedly installed in the heat dissipation windows 2. A fan 4 is fixedly installed at the outer side position of one of the heat dissipation windows 2. Through holes (not shown in the figure) are provided on the buffer member 6. Vent holes 7 are provided on the side walls of the inner casing 5. The vent holes 7 communicate the cavity of the inner casing 5 with the cavity between the outer casing 1 and the inner casing 5.

[0034] During use, the fan 4 is operated to allow external air to pass through the partition net 3, the heat dissipation window 2, the through holes and the vent holes 7, and then contact the battery assembly 10, so that the battery assembly 10 dissipates heat actively. After that, the air discharges the heat of the battery assembly 10 from the other heat dissipation window 2.

[0035] Embodiment 2: Please refer to Figures 1 - 6 , this embodiment is a further improvement of Embodiment 1. The improvement lies in that: the buffer member 6 is of a cylindrical structure, and both ends of the cylinder are open. Through holes are equidistantly penetrated through the circumferential side of the buffer member 6. The upper part of the inner side wall of the outer casing 1 is an inner convex part. An outer convex plate 14 is fixedly installed at the lower part of the outer side wall of the inner casing 5. The minimum distance between the inner convex part and the outer convex plate 14 is less than the diameter of the buffer member 6. The buffer member 6 is located between the inner convex part and the outer convex plate 14 (the four corners of the cavity between the outer casing 1 and the inner casing 5 are sufficient to accommodate a buffer member 6, and there is a distance between the buffer members 6 in the same direction, so that when the inner casing 5 moves in the circumferential direction, it will not directly contact the buffer members 6 at the four corners).

[0036] Through the cooperation of the inner convex part and the outer convex plate 14, the inner casing 5 is restricted in the outer casing 1 by means of the buffer member 6. After that, when the impact force received by the outer casing 1 is applied to the inner casing 5 through the buffer member 6, the inner casing 5 will squeeze the buffer member 6 in the moving direction to deform. The squeezed buffer member 6 will drive the buffer members 6 not in the moving direction of the inner casing 5 to deform synchronously (taking Figure 3 the direction shown as an example, when the inner casing 5 squeezes the buffer member 6 at the upper position, the buffer member 6 at the upper position of the inner casing 5 is transversely squeezed and deformed, and the buffer members 6 at the two upper corners of the inner casing 5 will be squeezed by the transversely deformed buffer member 6, and then longitudinally squeezed and deformed. The longitudinally deformed buffer member 6 will drive the buffer members 6 on the left and right sides of the inner casing 5 to be transversely squeezed and deformed), so that the impact energy received by the inner casing 5 is further absorbed, thereby further reducing the probability of damage to the battery assembly 10. After the buffer members 6 not in the moving direction of the inner casing 5 are deformed, they will contact the moved inner casing 5, and then play a certain role in holding the inner casing 5 tightly, so that when the buffer member 6 in the moving direction of the inner casing 5 returns to its original shape after deformation, it is not easy to drive the inner casing 5 to move back a long distance, and the battery assembly 10 in the inner casing 5 is not easy to cause secondary impact damage.

[0037] Please refer toFigures 1 - 6 , equidistantly rolling balls 15 are arranged on the upper side of the bottom wall of the outer housing 1 and corresponding to the position of the inner housing 5. The upper side of the balls 15 is in contact with the bottom wall of the inner housing 5. There is a spacing separated by the balls 15 between the bottom wall of the inner housing 5 and the bottom wall of the outer housing 1. There is a spacing in centimeters between adjacent balls 15.

[0038] Through the arrangement of the balls 15, the sliding friction between the inner housing 5 and the outer housing 1 is transformed into rolling friction, and then more of the impact energy during the movement of the inner housing 5 is transferred to the buffer member 6. At the same time, due to the existence of a spacing between the bottom wall of the inner housing 5 and the bottom wall of the outer housing 1, part of the air input by the fan 4 will move along this spacing, thereby increasing the heat dissipation area of the device.

[0039] A blocking member 16 is arranged in the cavity between the side walls of the outer housing 1 and the side walls of the inner housing 5. The blocking member 16 is arranged at the middle position around the inner housing 5. The outer side of the blocking member 16 is fixedly connected to the inner wall of the outer housing 1.

[0040] Through the arrangement of the blocking member 16, the buffer members 6 on each side of the inner housing 5 are evenly distributed, making the force exerted by the inner housing 5 on the buffer members 6 approximately uniform, thereby further reducing the probability of damage to the battery assembly 10.

[0041] Embodiment 3: When the device is installed on a moving device (such as a vehicle), with the start and stop of the moving device, the inner housing 5 is affected by the inertial force and then squeezes the corresponding buffer member 6. By using the movement and reset of the inner housing 5 and the deformation and reset of the buffer member 6, the air inside the device further flows, thereby improving the heat dissipation effect of the device.

Claims

1. A lithium energy storage battery with a housing and active heat dissipation, characterized in that: include: An outer shell (1), an inner shell (5) is arranged in the cavity of the outer shell (1), a buffer (6) is arranged between the outer shell (1) and the inner shell (5), the buffer (6) is made of elastic material, the upper side surface of the bottom wall of the inner shell (5) is provided with equidistant insertion holes (8), the upper side of the outer shell (1) and the inner shell (5) are jointly provided with a cover body (9), a battery assembly (10) is equidistantly fixedly installed on the lower side surface of the cover body (9), the lower end of the battery assembly (10) is plugged into the jack (8), the upper side surface of the cover body (9) is provided with a connection port (11), the cover body (9) is fixedly connected to the inner shell (5), and the lower side surface of the cover body (9) is in sliding contact with the upper side surface of the outer shell (1).

2. A lithium battery with a housing and active heat dissipation according to claim 1, characterized in that: The inner shell (5) has mounting holes (12) at four corners on the upper side, and bolts (13) are provided inside the cover (9) at positions corresponding to the mounting holes (12), wherein the bolts (13) are threadedly fixedly connected to the mounting holes (12).

3. A lithium battery with a housing and active heat dissipation according to claim 2, characterized in that: Both side walls of the outer shell (1) are provided with heat dissipation windows (2), the heat dissipation windows (2) connecting the external environment with the inner cavity of the outer shell (1), a partition net (3) is fixedly installed inside the heat dissipation window (2), a fan (4) is fixedly installed at the outer position of one side of the heat dissipation window (2), and the side walls of the inner shell (5) are all penetrated by ventilation holes (7).

4. A housing and an energy storage lithium battery with active heat dissipation according to claim 3, characterized in that: The buffer member (6) is a cylindrical structure, and both ends of the cylinder are opened.

5. A housing and an energy storage lithium battery with active heat dissipation according to claim 4, characterized in that: The volumes at the four corners of the cavity between the outer shell (1) and the inner shell (5) are greater than the volume of a single buffer (6), and there is a distance between the buffers (6) in the same direction.

6. A housing and an energy storage lithium battery with active heat dissipation according to claim 5, characterized in that: Through holes are equidistantly formed through the circumferential side of the buffer member (6).

7. A housing and an energy storage lithium battery with active heat dissipation according to claim 6, characterized in that: The upper portion of the inner wall of the outer shell (1) is an inner convex portion, and the lower portion of the outer wall of the inner shell (5) is fixedly mounted with an outer convex plate (14), the minimum spacing between the inner convex portion and the outer convex plate (14) is smaller than the diameter of the buffer (6), and the buffer (6) is located between the inner convex portion and the outer convex plate (14).

8. The energy storage lithium battery with a housing and active heat dissipation according to claim 7, characterized in that: Balls (15) are equidistantly arranged on the upper side of the bottom wall of the outer shell (1) and corresponding to the position of the inner shell (5), and the upper side of the balls (15) is in contact with the bottom wall of the inner shell (5).

9. A housing and an energy storage lithium battery with active heat dissipation according to claim 8, characterized in that: There is a gap between the bottom wall of the inner shell (5) and the bottom wall of the outer shell (1), separated by balls (15), and there is a gap in centimeters between adjacent balls (15).

10. The energy storage lithium battery with a housing and active heat dissipation according to claim 8, characterized in that: A blocking member (16) is provided in the cavity between the side wall of the outer shell (1) and the side wall of the inner shell (5); the blocking member (16) is provided in the middle position around the inner shell (5); and the outer side of the blocking member (16) is fixedly connected to the inner wall of the outer shell (1).

Images