A power-type sodium-ion battery

Abstract

The embodiment of the application provides a power type sodium ion battery, relates to the technical field of batteries, and comprises a shell and a battery cell, a plurality of rows of battery cells are installed in the inner cavity of the shell, a fixing shell is arranged between every two adjacent rows of battery cells, the fixing shell is fixedly connected with the front and rear side walls of the shell, a plurality of heat conduction rods are fixedly connected with the inner side wall of the fixing shell, a flow guide shell is fixedly connected on the front side wall of the shell, a fan and a tee pipe are installed in the inner cavity of the side of the flow guide shell away from the shell, when the external environment is in high temperature or the temperature of the battery cell is high, the vertical pipe, the tee pipe and the flow guide shell are made to be through by controlling the tee valve, when the fan is started, the external airflow is inhaled through the bottom shell, the airflow enters the inner cavity of the fixing shell through the vertical pipe, the tee pipe and the flow guide shell, the inner side wall of the fixing shell and the heat conduction rods are rapidly radiated, the internal part of the sodium ion battery pack is rapidly radiated, and the safety of the sodium ion battery is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a power-type sodium-ion battery. Background Technology

[0002] Sodium-ion batteries have become an important alternative to lithium-ion batteries due to their advantages such as abundant sodium resources, low cost, and good safety. They have great potential for application in low- and mid-range electric vehicles and other fields.

[0003] Currently, in the use of existing sodium-ion batteries, the densely packed multiple cells inside the battery pack are prone to "heat accumulation," and the heat inside the battery pack is difficult to dissipate efficiently, which can easily lead to high battery temperature or even thermal runaway, which is not conducive to the safe use of power sodium-ion batteries. Furthermore, when the ambient temperature drops, the range of power sodium-ion batteries will also decrease, which will greatly affect the use of electric vehicles.

[0004] Based on the above reasons, this utility model proposes a power-type sodium-ion battery that can efficiently dissipate heat from the battery's interior and control the battery's heat in low-temperature environments, thereby improving the performance of the sodium-ion battery. Utility Model Content

[0005] In view of the above problems, this application provides a power-type sodium-ion battery to solve the problem that existing sodium-ion batteries are susceptible to the effects of high and low temperatures.

[0006] This application provides a power sodium-ion battery, including a housing. Several rows of cells are installed in the inner cavity of the housing. A fixing shell is provided between each two adjacent rows of cells. The fixing shell is fixedly connected to the front and rear side walls of the housing. Several heat-conducting rods are fixedly connected to the inner side wall of the fixing shell. A flow guide shell is fixedly connected to the front side wall of the housing. A fan and a three-way pipe are installed in the inner cavity of the flow guide shell on the side away from the housing. A three-way valve is installed in the three-way pipe.

[0007] In some embodiments, a vertical pipe is inserted into the bottom end of the tee pipe, and a bottom shell is fixedly connected to the bottom end of the vertical pipe. The bottom surface of the bottom shell is rectangular, and the top surface of the bottom shell is circular.

[0008] In some embodiments, the inner diameter of the vertical tube is the same as the inner diameter of the top surface of the bottom shell, and a filter screen is fixedly connected to the inner cavity of the vertical tube.

[0009] In some embodiments, the left and right sidewalls of the fixing shell are both arc-shaped, and the arc-shaped sidewalls of the fixing shell are matched with the battery cell.

[0010] In some embodiments, a movable plate is provided in the inner cavity of the fixed shell on the side away from the guide shell. A round shaft is fixedly connected to the center of the upper and lower side walls of the movable plate. The round shaft is movably connected to the fixed shell, and a spring is sleeved on the round shaft. The two ends of the spring are fixedly connected to the inner wall of the fixed shell and the movable plate, respectively.

[0011] In some embodiments, the heat-conducting rods are staggered within the cavity of the fixed housing.

[0012] In some embodiments, a hot air duct is inserted into the inner cavity of the top end of the three-way pipe.

[0013] Through the above scheme, when the external environment is high or the cell temperature is high, the vertical pipe, the three-way valve controls the flow through the three-way pipe and the guide shell. When the fan is started, the external airflow is drawn in through the bottom shell and enters the inner cavity of the fixed shell through the vertical pipe, the three-way pipe and the guide shell, quickly dissipating heat from the inner wall of the fixed shell and the heat-conducting rod, thus achieving rapid heat dissipation inside the sodium-ion battery pack and improving the safety of sodium-ion battery use. When the external environment is low, the three-way valve controls the flow through the hot air pipe, the three-way pipe and the inner cavity of the guide shell. By fixing one end of the hot air pipe to the position of the tram motor, the fan can easily absorb heat when it is started, allowing the hot airflow to enter the inner cavity of the fixed shell. By heating the fixed shell, the heat is transferred to the cell, improving the cell's performance in low-temperature environments and ensuring the sodium-ion battery's range.

[0014] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this application;

[0017] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this application;

[0018] Figure 3 This is a schematic diagram of the overall longitudinal cross-sectional structure of this application;

[0019] Figure 4This is a schematic diagram of the structure of the fixed shell in this application;

[0020] Figure 5 This is a structural diagram of one side of the active panel in this application.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Housing; 2. Battery cell; 3. Fixing shell; 4. Heat-conducting rod; 5. Air guide shell; 6. Fan; 7. T-pipe; 8. T-valve; 9. Vertical pipe; 10. Bottom shell; 11. Filter screen; 12. Movable plate; 13. Round shaft; 14. Spring; 15. Hot air duct. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and drawings of this application are intended to cover without excluding other terms. The words "a" or "an" do not exclude the presence of multiples. Unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple sets" means two or more (including two sets).

[0025] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0026] Furthermore, descriptions of directions used to explain the operation and construction of the components in this embodiment, such as height, are not absolute but relative. Although these directions are appropriate when the components are in the positions shown in the figure, they should be interpreted differently when these positions change to correspond to the changes.

[0027] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, a detachable connection, or an integral connection. In addition to referring to a physical connection, "connection" or "linkage" in circuit structures can also refer to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate component, as long as the circuit is connected. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] To facilitate understanding of the technical solutions in the embodiments of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0029] like Figure 1-5 As shown, this application embodiment provides a power sodium-ion battery, including a housing 1, a plurality of rows of cells 2 installed in the inner cavity of the housing 1, a fixed shell 3 is provided between each adjacent row of cells 2, the fixed shell 3 is fixedly connected to the front and rear side walls of the housing 1, and a plurality of heat-conducting rods 4 are fixedly connected to the inner side wall of the fixed shell 3, a vertical pipe 9 is inserted into the bottom end of the three-way pipe 7, and a bottom shell 10 is fixedly connected to the bottom end of the vertical pipe 9. The bottom surface of the bottom shell 10 is rectangular and the top surface of the bottom shell 10 is circular. The left and right side walls of the fixed shell 3 are arc-shaped and the arc-shaped side walls of the fixed shell 3 are matched with the cells 2. A flow guide shell 5 is fixedly connected to the front side wall of the housing 1. A fan 6 and a three-way pipe 7 are installed in the inner cavity of the flow guide shell 5 away from the housing 1, and a three-way valve 8 is installed in the three-way pipe 7.

[0030] In the technical solution of this embodiment, when the external environment is at a high temperature or the cell 2 is at a high temperature, the vertical pipe 9, the three-way pipe 7 and the guide shell 5 are connected by the control of the three-way valve 8. When the fan 6 is started, the external airflow is drawn in through the bottom shell 10. The airflow enters the inner cavity of the fixed shell 3 through the vertical pipe 9, the three-way pipe 7 and the guide shell 5, and quickly dissipates heat from the inner wall of the fixed shell 3 and the heat conduction rod 4, thereby achieving rapid heat dissipation inside the sodium-ion battery pack and improving the safety of sodium-ion battery use.

[0031] The inner diameter of the vertical tube 9 is the same as the inner diameter of the top surface of the bottom shell 10, and a filter screen 11 is fixedly connected to the inner cavity of the vertical tube 9, which can filter the gas drawn into the inner cavity of the fixed shell 3 and pick out the impact of impurities on battery cooling.

[0032] A hot air pipe 15 is inserted into the inner cavity of the top of the three-way pipe 7. When the external environment is low, the hot air pipe 15, the three-way pipe 8 and the inner cavity of the guide shell 5 are connected by the control of the three-way valve 8. By fixing one end of the hot air pipe 15 to the position of the tram motor, when the fan 6 is started, it is convenient to absorb heat and allow the hot air to enter the inner cavity of the fixed shell 3. By heating the fixed shell 3, the heat is transferred to the battery cell 2, which improves the performance of the battery cell 2 in low temperature environment and ensures the battery life of sodium ion battery.

[0033] The heat-conducting rods 4 are staggered in the inner cavity of the fixed shell 3. On the one hand, the cold airflow can efficiently discharge the heat on the heat-conducting rods 4, and on the other hand, it can efficiently absorb the heat of the hot airflow entering the inner cavity of the fixed shell 3, thereby improving the heating efficiency of the fixed shell 3 and ensuring the performance of the battery cell 2.

[0034] A movable plate 12 is provided in the inner cavity of the fixed shell 3 on the side away from the flow guide shell 5. A round shaft 13 is fixedly connected to the center of the upper and lower side walls of the movable plate 12. The round shaft 13 is movably connected to the fixed shell 3, and a spring 14 is sleeved on the round shaft 13. The two ends of the spring 14 are fixedly connected to the inner wall of the fixed shell 3 and the movable plate 12, respectively. When the sodium-ion battery is not in use, the round shaft 13 is rotated by the elastic force of the spring 14. The round shaft 13 drives the movable plate 12 to rotate, and the movable plate 12 is used to seal the fixed shell 3, reducing the entry of external impurities and improving the safety of use.

[0035] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0036] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A power-type sodium-ion battery, characterized in that, Includes a housing (1), the inner cavity of which is equipped with several rows of battery cells (2), and a fixed shell (3) is provided between each two adjacent rows of battery cells (2). The fixed shell (3) is fixedly connected to the front and rear side walls of the housing (1), and several heat-conducting rods (4) are fixedly connected to the inner side wall of the fixed shell (3). A flow guide shell (5) is fixedly connected to the front side wall of the housing (1). A fan (6) and a three-way pipe (7) are installed in the inner cavity of the flow guide shell (5) away from the housing (1). A three-way valve (8) is installed in the three-way pipe (7).

2. A power-type sodium-ion battery according to claim 1, characterized in that, The bottom end of the three-way pipe (7) is connected to a vertical pipe (9), and the bottom end of the vertical pipe (9) is fixedly connected to a bottom shell (10). The bottom surface of the bottom shell (10) is rectangular, and the top surface of the bottom shell (10) is circular.

3. A power-type sodium-ion battery according to claim 2, characterized in that, The inner diameter of the vertical tube (9) is the same as the inner diameter of the top surface of the bottom shell (10), and a filter screen (11) is fixedly connected to the inner cavity of the vertical tube (9).

4. A power-type sodium-ion battery according to claim 1, characterized in that, The left and right sidewalls of the fixed shell (3) are both arc-shaped, and the arc-shaped sidewalls of the fixed shell (3) are matched with the battery cell (2).

5. A power-type sodium-ion battery according to claim 1, characterized in that, A movable plate (12) is provided in the inner cavity of the fixed shell (3) away from the flow guide shell (5). A round shaft (13) is fixedly connected to the center of the upper and lower side walls of the movable plate (12). The round shaft (13) is movably connected to the fixed shell (3), and a spring (14) is sleeved on the round shaft (13). The two ends of the spring (14) are fixedly connected to the inner wall of the fixed shell (3) and the movable plate (12) respectively.

6. A power-type sodium-ion battery according to claim 1, characterized in that, The heat-conducting rods (4) are staggered in the inner cavity of the fixed shell (3).

7. A power-type sodium-ion battery according to claim 1, characterized in that, A hot air pipe (15) is inserted into the inner cavity of the top end of the three-way pipe (7).

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