Battery steel shell with heat dissipation performance

Abstract

The utility model discloses a battery steel shell with heat dissipation performance, the battery steel shell comprises a shell, an airflow assembly and a plurality of fixed plate groups, the shell is provided with a plurality of air inlets and a plurality of air outlets, and the plurality of air inlets are located in the middle of one side of the shell; the airflow assembly is arranged in the shell and used for forcing airflow to be formed in the air inlet. A plurality of reinforcing raised lines are arranged on the outer side of the periphery of the shell, and connecting grooves are formed in the positions, corresponding to the reinforcing raised lines, of the inner side of the shell; the plurality of fixing plate groups are connected in the connecting groove and are used for fixing the plurality of battery units in the shell, and a plurality of airflow channels communicated with the air inlet are formed among the plurality of fixing plate groups. The battery steel shell with the heat dissipation performance is good in heat dissipation effect, high in strength and high in buffering capacity.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery steel shell with heat dissipation performance. Background Art

[0002] Lithium batteries are widely used in various industries due to their excellent high energy, high cycle life, wide operating temperature range and low self-discharge performance. Some existing lithium batteries generally include an outer shell and multiple battery cells inside. The multiple battery cells are generally fixed in the outer shell through a battery rack and connected to each other in series or parallel. The number and connection method of the internal battery cells can be adjusted to achieve regulation of power and voltage. The battery shell is the most important component in the battery, and its quality is an important guarantee for battery quality and battery safety.

[0003] However, the existing battery casings have the following defects: the heat dissipation effect is generally improved by setting heat dissipation fins, fans or liquid cooling tubes, but the heat dissipation effect for multiple stacked battery cells is low, and the middle part of the battery cell stack cannot be well cooled; in addition, the existing battery casings have poor strength and buffering capacity, and are easily deformed or even damaged under vibration or impact.

[0004] Therefore, how to design a battery steel shell with heat dissipation performance to overcome the above-mentioned shortcomings is a problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] One purpose of the present application is to provide a battery steel shell with good heat dissipation effect, high strength, and strong buffering capacity.

[0006] In order to achieve the above purpose, the technical solution adopted in the present application is: a battery steel shell with heat dissipation performance, comprising a shell, an airflow component and a plurality of fixed plate groups, the shell is provided with a plurality of air inlets and a plurality of air outlets, and the plurality of air inlets are located in the middle of one side of the shell; the airflow component is arranged on the shell and is used to force airflow to form in the air inlet; a plurality of reinforcing ridges are arranged on the outer side of the shell, and a connecting groove is arranged on the inner side of the shell corresponding to the position of the reinforcing ridge; a plurality of fixed plate groups are connected to the connecting grooves and are used to fix a plurality of battery cells in the shell, and a plurality of airflow channels connected to the air inlet are formed between the plurality of fixed plate groups.

[0007] As a preferred embodiment, the air inlet and the air outlet are both formed at the bottom of the shell, the air outlets are located around the bottom of the shell, and the multiple air outlets are all connected to the air flow channel. The advantages are: this not only reduces the entry of liquid and dust into the shell, but also allows the airflow in the shell to enter some of the corresponding air flow channels through the air inlet and then be introduced into the air outlet through other air flow channels for discharge, so that the airflow passes through the air flow channel twice for heat dissipation, improves the utilization rate of the airflow, and further improves the heat dissipation effect.

[0008] As a preferred embodiment, the airflow assembly includes a dust cover and a negative pressure member, wherein the dust cover is provided with a plurality of through holes and is placed at the bottom of the housing; the negative pressure member is provided on the dust cover and is located directly below the air inlet. The advantage is that the dust cover is provided in conjunction with the negative pressure member to form an airflow in the housing, while further reducing the amount of liquid and dust entering the housing.

[0009] As a preferred embodiment, the airflow assembly further comprises a windshield, which is disposed on the negative pressure member and connected to the dust cover, and is used to separate the air inlet from the air outlet. The advantage is that the negative pressure formed by the negative pressure member is gathered at the air inlet through the windshield, thereby increasing the speed of the airflow formed in the air inlet and improving the heat dissipation effect.

[0010] As a preferred embodiment, the shell includes a body and a cover, the cover is detachably connected to the open portion of the body, and the fixing plate group is slidably connected to the connecting groove; when the cover is connected to the body, the cover squeezes and fixes the fixing plate group in the connecting groove and squeezes and fixes the battery unit in the body. The advantage is that this makes the shell and the fixing plate group a detachable structure, which is convenient for disassembly and maintenance and adjustment of the number of battery units.

[0011] As a preferred embodiment, the fixing plate group includes two clamping plates, and a plurality of clamping parts are formed at intervals in the middle of the two clamping plates; when the two ends of the two clamping plates are respectively connected to the connecting grooves on the front and rear sides of the body, a clamping area for clamping the battery unit is formed between the clamping parts on the two clamping plates; when a plurality of the fixing plate groups are connected to the inside of the body, the clamping parts of two adjacent fixing plate groups abut against each other and enclose the airflow channel. The advantages are: through the clamping plates cooperating with the clamping parts, the fixing plate group can be connected to the body and the battery unit can be clamped and fixed, and the airflow channel can be formed. The structure is ingenious, and the clamping parts abutting against each other can improve the stability and strength of the connection between the two adjacent fixing plate groups.

[0012] As a preferred embodiment, the clamping parts near the left and right sides of the body are provided with connecting plates, and the connecting plates are connected to the connecting grooves on the left and right sides of the body. The advantage is that by providing the connecting plates connected to the connecting grooves, the stability and strength of the connection are improved while the heat dissipation effect on the left and right sides of the battery stack is improved.

[0013] As a preferred embodiment, the inner bottom of the body is provided with a plurality of positioning grooves for positioning the bottom of the battery unit, which has the advantage that after the battery unit is positioned by the positioning grooves, the fixing plate group can be easily installed and fixed.

[0014] Compared with the prior art, the beneficial effects of the present application are as follows: by setting the airflow assembly to cooperate with the air inlet and the air outlet so that airflow is formed inside the shell, the airflow channel formed between the multiple groups of the fixed plate groups is used to make the airflow flow in the middle of the battery cell stack, thereby achieving directional heat dissipation and improving the heat dissipation effect in the middle of the battery cell stack; by setting the reinforcing ribs to cooperate with the connecting grooves so that the fixed plate group is connected to the reinforcing ribs, and at the same time, the shell and the fixed plate group are made of steel as a whole, which not only improves the buffering capacity of the shell by supporting the shell with the fixed plate group, but also improves the strength of the shell with the reinforcing ribs, and makes the heat around the battery cell stack quickly transferred to the reinforcing ribs with a large surface area through the fixed plate group, further improving the heat dissipation effect. It can be seen from this that the battery steel shell with heat dissipation performance has good heat dissipation effect, high strength and strong buffering capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a battery steel shell with heat dissipation performance provided in this application.

[0016] Figure 2 A three-dimensional cross-sectional view of a battery steel shell with heat dissipation performance provided in this application.

[0017] Figure 3 Schematic diagram of the explosion of the battery steel shell with heat dissipation performance provided in this application.

[0018] Figure 4 A cross-sectional view of a battery steel shell with heat dissipation performance provided in this application.

[0019] In the figure: shell 1, air inlet 11, air outlet 12, reinforcing ridge 13, connecting groove 14, main body 15, positioning groove 151, cover 16, airflow component 2, dust cover 21, through hole 211, negative pressure part 22, wind shield 23, fixing plate group 3, airflow channel 31, clamping plate 32, clamping part 33, connecting plate 34. DETAILED DESCRIPTION

[0020] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0021] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0022] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0023] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0024] Reference Figure 1-4One embodiment of the present application provides a battery steel shell with heat dissipation performance, including a shell 1, an airflow component 2 and a plurality of fixed plate groups 3, the shell 1 is provided with a plurality of air inlets 11 and a plurality of air outlets 12, and the plurality of air inlets 11 are located in the middle of one side of the shell 1; the airflow component 2 is arranged on the shell 1 and is used to force airflow to form in the air inlet 11; a plurality of reinforcing ridges 13 are arranged on the outer side of the shell 1, and a connecting groove 14 is arranged on the inner side of the shell 1 at a position corresponding to the reinforcing ridge 13; the plurality of fixed plate groups 3 are connected to the connecting grooves 14 and are used to fix a plurality of battery cells in the shell 1, and a plurality of airflow channels 31 connected to the air inlet 11 are formed between the plurality of fixed plate groups 3. By setting the airflow component 2 in coordination with the air inlet 11 and the air outlet 12 so that the airflow is formed inside the shell 1, the airflow channel 31 formed between the multiple groups of fixed plate groups 3 is used to make the airflow flow in the middle of the battery cell stack, so as to achieve directional heat dissipation and improve the heat dissipation effect in the middle of the battery cell stack; by setting the reinforcing ribs 13 in coordination with the connecting grooves 14, the fixed plate group 3 is connected to the reinforcing ribs 13, and the shell and the fixed plate group 3 are made of steel as a whole, which not only improves the buffering capacity of the shell 1 by supporting the shell 1 through the fixed plate group 3, but also improves the strength of the shell 1 by cooperating with the reinforcing ribs 13, and makes the heat around the battery cell stack quickly transferred to the reinforcing ribs 13 with a large surface area through the fixed plate group 3, so as to further improve the heat dissipation effect. It can be seen from this that the battery steel shell with heat dissipation performance has good heat dissipation effect, high strength and strong buffering capacity.

[0025] Reference Figure 2-4 In some embodiments of the present application, the air inlet 11 and the air outlet 12 are both formed at the bottom of the housing 1, the air outlet 12 is located around the bottom of the housing 1, and the multiple air outlets 12 are all connected to the air flow channel 31. This not only reduces the entry of liquid and dust into the housing 1, but also allows the air flow in the housing 1 to enter some corresponding air flow channels 31 through the air inlet 11 and then be introduced into the air outlet 12 through other air flow channels 31 for discharge, so that the air flow passes through the air flow channel 31 twice for heat dissipation, improves the utilization rate of the air flow, and further improves the heat dissipation effect.

[0026] Reference Figure 2-4 In some embodiments of the present application, the airflow assembly 2 includes a dust cover 21 and a negative pressure member 22. The dust cover 21 is provided with a plurality of through holes 211, and the dust cover 21 is placed at the bottom of the housing 1; the negative pressure member 22 is provided on the dust cover 21 and is located directly below the air inlet 11. By providing the dust cover 21 in conjunction with the negative pressure member 22, an airflow is formed in the housing 1, and liquid and dust are further reduced from entering the housing 1. It should be noted that the negative pressure member 22 can be a fan, and the negative pressure member 22 itself and the installation method are both prior art, and will not be described in detail here.

[0027] Reference Figure 2-4In some embodiments of the present application, the airflow assembly 2 further includes a windshield 23, which is disposed on the negative pressure member 22 and connected to the dust cover 21, and is used to separate the air inlet 11 from the air outlet 12. This allows the negative pressure formed by the negative pressure member 22 to be gathered at the air inlet 11 through the windshield 23, thereby increasing the speed of the airflow formed in the air inlet 11 and improving the heat dissipation effect.

[0028] Reference Figure 1-3 In some embodiments of the present application, the housing 1 includes a body 15 and a cover 16. The cover 16 is detachably connected to the open portion of the body 15, and the fixing plate group 3 is slidably connected to the connecting groove 14. When the cover 16 is connected to the body 15, the cover 16 squeezes and fixes the fixing plate group 3 in the connecting groove 14 and squeezes and fixes the battery unit in the body 15. This makes the housing 1 and the fixing plate group 3 a detachable structure, which is convenient for disassembly and maintenance and adjustment of the number of battery units. It should be noted that the body 15 and the cover 16 are detachably connected by a bolt and nut structure.

[0029] Reference Figure 3-4 In some embodiments of the present application, the fixing plate group 3 includes two clamping plates 32, and a plurality of clamping portions 33 are formed at intervals in the middle of the two clamping plates 32; when the two ends of the two clamping plates 32 are respectively connected to the connection grooves 14 on the front and rear sides of the body 15, a clamping area for clamping the battery unit is formed between the clamping portions 33 on the two clamping plates 32; when multiple fixing plate groups 3 are connected inside the body 15, the clamping portions 33 of two adjacent fixing plate groups 3 abut against each other and enclose the airflow channel 31. The clamping plates 32 cooperate with the clamping portions 33, so that the fixing plate group 3 can be connected to the body 15 while clamping and fixing the battery unit, and the airflow channel 31 can be formed. The structure is ingenious, and the clamping portions 33 abutting against each other can improve the stability and strength of the connection between the two adjacent fixing plate groups 3.

[0030] Reference Figure 3 In some embodiments of the present application, a connection plate 34 is provided on the clamping portion 33 near the left and right sides of the body 15, and the connection plate 34 is connected to the connection slots 14 on the left and right sides of the body 15. By providing the connection plate 34 connected to the connection slot 14, the stability and strength of the connection are improved, and the heat dissipation effect on the left and right sides of the battery cell stack is improved.

[0031] Reference Figure 2 In some embodiments of the present application, the inner bottom of the body 15 is provided with a plurality of positioning grooves 151 for positioning the bottom of the battery unit. After the battery unit is positioned by the positioning grooves 151, it is convenient to install and fix the fixing plate group 3.

[0032] In summary, the battery steel shell with heat dissipation performance has good heat dissipation effect, high strength and strong buffering capacity.

[0033] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A battery steel shell with heat dissipation performance, characterized in that: It includes a shell, an airflow component and multiple groups of fixed plate groups, the shell is provided with multiple air inlets and multiple air outlets, and the multiple air inlets are located in the middle of one side of the shell; the airflow component is arranged on the shell and is used to force airflow to form in the air inlets; multiple reinforcing ridges are arranged on the outer side of the shell, and connecting grooves are arranged on the inner side of the shell corresponding to the positions of the reinforcing ridges; multiple groups of fixed plate groups are connected to the connecting grooves and are used to fix multiple battery cells in the shell, and multiple airflow channels connected to the air inlets are formed between the multiple groups of fixed plate groups.

2. The battery steel shell with heat dissipation performance as claimed in claim 1, characterized in that: The air inlet and the air outlet are both formed at the bottom of the shell, the air outlet is located around the bottom of the shell, and a plurality of the air outlets are all connected to the air flow channel.

3. The battery steel shell with heat dissipation performance as claimed in claim 2, characterized in that: The airflow component includes a dust cover and a negative pressure piece. The dust cover is penetrated by a plurality of through holes and is placed at the bottom of the shell. The negative pressure piece is arranged on the dust cover and is located directly below the air inlet.

4. The battery steel shell with heat dissipation performance as claimed in claim 3, characterized in that: The airflow component also includes a wind shield, which is arranged on the negative pressure member and connected to the dust cover, and is used to separate the air inlet from the air outlet.

5. The battery steel shell with heat dissipation performance as claimed in claim 1, characterized in that: The shell includes a main body and a cover body, the cover body is detachably connected to the open part of the main body, and the fixing plate group is slidably connected in the connecting groove; when the cover body is connected to the main body, the cover body squeezes and fixes the fixing plate group in the connecting groove and squeezes and fixes the battery unit in the main body.

6. The battery steel shell with heat dissipation performance as claimed in claim 5, characterized in that: The fixing plate group includes two clamping plates, and a plurality of clamping parts are formed at intervals in the middle of the two clamping plates; when the two ends of the two clamping plates are respectively connected to the connecting grooves on the front and rear sides of the main body, a clamping area for clamping the battery unit is formed between the clamping parts on the two clamping plates; when a plurality of the fixing plate groups are connected to the inside of the main body, the clamping parts of two adjacent fixing plate groups abut against each other and enclose the airflow channel.

7. The battery steel shell with heat dissipation performance as claimed in claim 6, characterized in that: The clamping parts close to the left and right sides of the main body are provided with connecting plates, and the connecting plates are connected to the connecting grooves on the left and right sides of the main body.

8. The battery steel shell with heat dissipation performance as claimed in claim 5, characterized in that: The inner bottom of the body is provided with a plurality of positioning grooves for positioning the bottom of the battery unit.

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