Cylindrical lithium battery electrode structure with embedded micro-channel heat dissipation function

Abstract

The utility model relates to the technical field of cylindrical lithium battery electrode structures, in particular to a cylindrical lithium battery electrode structure with embedded micro-channel heat dissipation. Comprising a positive electrode and a negative electrode, the positive electrode and the negative electrode are each of a cylindrical structure, micro-channel heat dissipation assemblies used for conducting heat dissipation on lithium battery electrodes are arranged in the positive electrode and the negative electrode correspondingly, and external cooling assemblies used for reducing the temperature of the micro-channel heat dissipation assemblies are installed on the micro-channel heat dissipation assemblies. The external cooling assembly is provided with an adjusting assembly used for adjusting the heat dissipation effect of the micro-channel heat dissipation assembly. According to the lithium battery, the micro-channel pipe is embedded in the electrode, and cooling liquid flows in the micro-channel pipe, so that the temperature in the lithium battery can be effectively reduced, heat accumulation is prevented, the working efficiency of the lithium battery is improved, and the service life of the lithium battery is prolonged. In addition, the spiral distribution of the micro-channel pipes can increase the contact area between the cooling liquid and the electrode, and the heat dissipation effect is further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cylindrical lithium cell electrode structure technical field, especially related to a cylindrical lithium cell electrode structure of embedded microchannel heat dissipation. BACKGROUND

[0002] With the rapid development of electric vehicles and portable electronic devices, lithium batteries as the main energy storage device, its performance and safety have been widely concerned. A large amount of heat will be generated in the working process of lithium battery, if it cannot be cooled in time, it will cause the temperature of the battery to rise, and then affect the performance and life of the battery, and even cause safety problems.

[0003] The traditional heat dissipation method usually adopts external cooling fin or air cooling system, but these methods have the problems of low heat dissipation efficiency, large volume and high cost. Therefore, we need to put forward a kind of cylindrical lithium battery electrode structure of embedded microchannel heat dissipation to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of cylindrical lithium battery electrode structures of embedded microchannel heat dissipation, by embedding microchannel pipe in electrode interior, utilize cooling liquid to flow in microchannel pipe, can effectively reduce the temperature inside lithium battery, prevent heat accumulation, to improve the working efficiency and service life of lithium battery, to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of cylindrical lithium battery electrode structure of embedded microchannel heat dissipation, including positive pole and negative pole, the positive pole and negative pole are cylindrical structure, the positive pole and negative pole are provided with microchannel heat dissipation component for the heat dissipation of lithium battery electrode in, microchannel heat dissipation component is installed with the external cooling component for reducing the temperature of microchannel heat dissipation component, the external cooling component is installed with the adjusting component for adjusting the heat dissipation effect of microchannel heat dissipation component;

[0006] The microchannel heat dissipation component includes two groups of microchannel pipes, two groups of the microchannel pipe are installed in positive pole and negative pole respectively, two groups of the microchannel pipe are respectively along the spiral distribution of positive pole and negative pole, cooling liquid flows in the microchannel pipe.

[0007] Further, the outer part of the positive pole and the negative pole is respectively connected with liquid inlet pipe and liquid outlet pipe, the liquid inlet pipe and the liquid outlet pipe are respectively connected with the two ends of the microchannel pipe.

[0008] Further, the inner wall of the microchannel pipe is installed with multiple groups of heat dissipation fins, multiple groups of the heat dissipation fin are annular equidistantly arranged with the central axis of the microchannel pipe as center.

[0009] Further, the external cooling assembly comprises a cooling box, a cooling liquid is arranged in the cooling box, and a semiconductor refrigeration sheet is arranged on the side wall of the cooling box.

[0010] Further, a transmission pump is arranged at one end of the cooling box, a first shunt pipe is arranged on the transmission pump, two groups of first transmission pipes are arranged on the first shunt pipe, and one end of each of the two groups of first transmission pipes is connected to the liquid inlet pipe of the positive electrode and the negative electrode respectively.

[0011] Further, a second shunt pipe is arranged at the other end of the cooling box, two groups of second transmission pipes are connected to one end of the second shunt pipe, and one end of each of the two groups of second transmission pipes is connected to the liquid outlet pipe of the positive electrode and the negative electrode respectively.

[0012] Further, the adjusting assembly comprises two groups of temperature sensors and two groups of flow control valves, the two groups of temperature sensors are arranged on the positive electrode and the negative electrode respectively, and the two groups of flow control valves are connected to the two groups of first transmission pipes respectively.

[0013] The beneficial effects of the utility model are as follows:

[0014] The utility model discloses a microchannel pipe is embedded in the electrode, and the cooling liquid flows in the microchannel pipe, which can effectively reduce the temperature in the lithium battery, prevent heat accumulation, thereby improving the working efficiency and service life of the lithium battery. In addition, the spiral distribution of the microchannel pipe can increase the contact area of the cooling liquid and the electrode, further improving the heat dissipation effect.

[0015] The other features and advantages of the utility model will be described in the subsequent description, and some of them will become apparent from the description, or be understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structure indicated in the description and the drawings. DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0017] Fig. 1 The overall structure schematic view according to the embodiment of the utility model is shown;

[0018] Fig. 2 The positive electrode cross-sectional structure schematic view according to the embodiment of the utility model is shown;

[0019] Fig. 3A micro-channel pipe cross-section structure schematic diagram according to an embodiment of the utility model is shown.

[0020] In the figure: 110, positive electrode; 120, negative electrode; 210, micro-channel pipe; 220, liquid inlet pipe; 230, liquid outlet pipe; 240, heat conduction sheet; 310, cooling box; 320, transmission pump; 330, first shunt pipe; 340, first transmission pipe; 350, second shunt pipe; 360, second transmission pipe; 410, flow control valve. DETAILED DESCRIPTION

[0021] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely explained below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figs. 1-3 The utility model provides a technical scheme:

[0023] A cylindrical lithium battery electrode structure embedded with micro-channel heat dissipation.

[0024] The positive electrode 110 and the negative electrode 120 are both cylindrical structures, and the positive electrode 110 and the negative electrode 120 are both provided with a micro-channel heat dissipation assembly for heat dissipation of the lithium battery electrode, the micro-channel heat dissipation assembly is installed with an external cooling assembly for reducing the temperature of the micro-channel heat dissipation assembly, and the external cooling assembly is installed with an adjusting assembly for adjusting the heat dissipation effect of the micro-channel heat dissipation assembly.

[0025] The lithium battery electrode heat dissipation device combines the micro-channel heat dissipation assembly, the external cooling assembly and the adjusting assembly to realize effective heat dissipation of the positive electrode 110 and the negative electrode 120 of the lithium battery. The micro-channel heat dissipation assembly quickly absorbs the heat generated by the electrode through the flow of the cooling liquid in the micro-channel pipe 210. The external cooling assembly further reduces the temperature of the cooling liquid through the cooling box 310 and the semiconductor refrigeration sheet to ensure the heat dissipation effect. The adjusting assembly monitors and adjusts the flow of the cooling liquid in real time through the temperature sensor and the flow control valve 410 to ensure efficient operation of the heat dissipation system. This design not only improves the heat dissipation efficiency, but also prolongs the service life of the lithium battery.

[0026] The micro-channel heat dissipation assembly includes two groups of micro-channel pipes 210, which are respectively installed in the positive electrode 110 and the negative electrode 120, and are arranged in a spiral shape along the positive electrode 110 and the negative electrode 120. The micro-channel pipes 210 circulate cooling liquid, effectively improving the heat dissipation efficiency.

[0027] The micro-channel heat dissipation assembly realizes efficient heat dissipation of the positive electrode 110 and the negative electrode 120 through the design of the two groups of micro-channel pipes 210. The spiral distribution of the micro-channel pipes 210 increases the contact area between the cooling liquid and the electrode, so that the heat can be more evenly absorbed. The flow of the cooling liquid in the micro-channel pipes 210 further accelerates the heat transfer, effectively reduces the temperature of the electrode, and improves the heat dissipation efficiency.

[0028] The positive electrode 110 and the negative electrode 120 are respectively connected with an inlet pipe 220 and an outlet pipe 230, which are respectively connected with both ends of the micro-channel pipe 210.

[0029] The design of the inlet pipe 220 and the outlet pipe 230 ensures that the cooling liquid can smoothly enter and flow out of the micro-channel pipe 210. The inlet pipe 220 delivers low-temperature cooling liquid to the inlet of the micro-channel pipe 210, and the cooling liquid absorbs heat in the micro-channel pipe 210 and then flows out through the outlet pipe 230, completing a heat dissipation cycle. This design not only improves the efficiency of the heat dissipation system, but also ensures the recycling of the cooling liquid.

[0030] A plurality of heat-conducting fins 240 are installed on the inner wall of the micro-channel pipe 210, and the plurality of heat-conducting fins 240 are arranged in a ring shape at equal intervals around the central axis of the micro-channel pipe 210.

[0031] The design of the heat-conducting fins 240 further improves the heat dissipation efficiency of the micro-channel pipe 210. The heat-conducting fins 240 are installed on the inner wall of the micro-channel pipe 210 in a ring shape at equal intervals, increasing the contact area between the cooling liquid and the pipe wall and promoting the rapid transfer of heat. This design not only improves the heat dissipation effect, but also reduces the amount of cooling liquid used and the operating cost of the system.

[0032] The external cooling assembly includes a cooling box 310, which is filled with cooling liquid, and a semiconductor refrigeration fin installed on the side wall of the cooling box 310.

[0033] The external cooling assembly realizes further cooling of the cooling liquid through the design of the cooling box 310 and the semiconductor refrigeration fin. The cooling box 310 is filled with cooling liquid, and the semiconductor refrigeration fin is installed on the side wall of the cooling box 310 to reduce the temperature of the cooling liquid by absorbing heat. This design ensures that the cooling liquid remains at a low temperature before entering the micro-channel pipe 210, improving the overall efficiency of the heat dissipation system.

[0034] One end of the cooling tank 310 is installed with a transmission pump 320, and the first shunt pipe 330 is installed on the transmission pump 320, and two groups of first transmission pipes 340 are installed on the first shunt pipe 330, and one end of the two groups of first transmission pipes 340 is connected to the liquid inlet pipe 220 of the positive electrode 110 and the negative electrode 120 respectively.

[0035] The design of the transmission pump 320 and the first shunt pipe 330 ensures that the cooling liquid can be uniformly distributed into the micro-channel pipe 210 of the positive electrode 110 and the negative electrode 120. The transmission pump 320 is responsible for driving the circulation of the cooling liquid between the cooling tank 310 and the micro-channel pipe 210, and the first shunt pipe 330 divides the cooling liquid into two paths, which are respectively transported to the liquid inlet pipe 220 of the positive electrode 110 and the negative electrode 120 through the first transmission pipe 340. This design not only improves the distribution efficiency of the cooling liquid, but also ensures the uniformity and reliability of the heat dissipation system.

[0036] The other end of the cooling tank 310 is installed with a second shunt pipe 350, and two groups of second transmission pipes 360 are connected to one end of the second shunt pipe 350, and one end of the two groups of second transmission pipes 360 is connected to the liquid outlet pipe 230 of the positive electrode 110 and the negative electrode 120 respectively.

[0037] The design of the second shunt pipe 350 and the second transmission pipe 360 ensures that the cooling liquid flowing out of the micro-channel pipe 210 can smoothly return to the cooling tank 310. The second shunt pipe 350 collects the cooling liquid flowing out of the positive electrode 110 and the negative electrode 120, and returns it to the cooling tank 310 through the second transmission pipe 360. This design not only improves the circulation efficiency of the cooling liquid, but also reduces the heat loss of the system, further improving the overall performance of the heat dissipation system.

[0038] The adjustment assembly includes two groups of temperature sensors and two groups of flow control valves 410, and the two groups of temperature sensors are installed on the positive electrode 110 and the negative electrode 120 respectively, and the two groups of flow control valves 410 are connected to the two groups of first transmission pipes 340 respectively.

[0039] The adjustment assembly realizes real-time monitoring and adjustment of the heat dissipation effect through the design of the temperature sensor and the flow control valve 410. The temperature sensor is installed on the positive electrode 110 and the negative electrode 120 to monitor the temperature change of the electrode in real time. The flow control valve 410 is installed on the first transmission pipe 340, which automatically adjusts the flow of the cooling liquid according to the feedback signal of the temperature sensor, ensuring the efficient operation of the heat dissipation system. This design not only improves the automation level of the heat dissipation system, but also ensures the stability and reliability of the heat dissipation effect.

[0040] Specifically, the internal electrical connection structure of the semiconductor refrigeration sheet, the transmission pump 320, the temperature sensor and the flow control valve 410 is well known to those skilled in the art, and will not be described here. The electrical components appearing in the present application are all externally connected to the power supply when in use.

[0041] The circuit and electrical components and modules are all prior art, and those skilled in the art can implement them without further description. The content protected by the present utility model does not involve improvement of software.

[0042] The control method of the present application is automatically controlled by the controller. The control circuit of the controller can be realized by simple programming by those skilled in the art, and it is common knowledge in the art. Moreover, the present application is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0043] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents. These modifications or replacements do not change the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An embedded microchannel heat sinked cylindrical lithium battery electrode structure, characterized by: The application relates to a lithium battery electrode cooling device, which comprises a positive electrode (110) and a negative electrode (120), the positive electrode (110) and the negative electrode (120) are both in a cylindrical structure, a micro-channel heat dissipation assembly for dissipating heat of the lithium battery electrode is arranged in the positive electrode (110) and the negative electrode (120), an external cooling assembly for reducing the temperature of the micro-channel heat dissipation assembly is arranged on the micro-channel heat dissipation assembly, and an adjusting assembly for adjusting the heat dissipation effect of the micro-channel heat dissipation assembly is arranged on the external cooling assembly. The micro-channel heat dissipation assembly comprises two groups of micro-channel pipes (210), the two groups of micro-channel pipes (210) are arranged in the positive electrode (110) and the negative electrode (120) respectively, the two groups of micro-channel pipes (210) are arranged along the spiral distribution of the positive electrode (110) and the negative electrode (120) respectively, and cooling liquid flows through the micro-channel pipes (210).

2. The cylindrical lithium battery electrode structure embedded with micro- channel heat sink of claim 1, wherein: The positive electrode (110) and the negative electrode (120) are respectively connected with an inlet pipe (220) and an outlet pipe (230), and the inlet pipe (220) and the outlet pipe (230) are connected with two ends of the micro-channel pipe (210) respectively.

3. The cylindrical lithium battery electrode structure embedded with micro- channel heat sink of claim 2, wherein: A plurality of heat-conducting sheets (240) are arranged on the inner wall of the micro-channel pipe (210), and the plurality of heat-conducting sheets (240) are arranged in a ring shape at equal intervals with the central axis of the micro-channel pipe (210) as the center.

4. The cylindrical lithium battery electrode structure embedded with micro- channel heat sink of claim 3, wherein: The external cooling assembly comprises a cooling box (310), cooling liquid is arranged in the cooling box (310), and a semiconductor refrigeration sheet is arranged on the side wall of the cooling box (310).

5. The cylindrical lithium battery electrode structure embedded with micro- channel heat sink of claim 4, wherein: One end of the cooling box (310) is provided with a transmission pump (320), a first shunt pipe (330) is arranged on the transmission pump (320), two groups of first transmission pipes (340) are arranged on the first shunt pipe (330), and one end of each of the two groups of first transmission pipes (340) is connected with the inlet pipe (220) of the positive electrode (110) and the negative electrode (120) respectively.

6. The cylindrical lithium battery electrode structure embedded with micro- channel heat sink of claim 5, wherein: The other end of the cooling box (310) is provided with a second shunt pipe (350), two groups of second transmission pipes (360) are connected to one end of the second shunt pipe (350), and one end of each of the two groups of second transmission pipes (360) is connected with the outlet pipe (230) of the positive electrode (110) and the negative electrode (120) respectively.

7. The cylindrical lithium battery electrode structure embedded with micro- channel heat sink of claim 6, wherein: The adjusting assembly comprises two groups of temperature sensors and two groups of flow control valves (410), the two groups of temperature sensors are arranged on the positive electrode (110) and the negative electrode (120) respectively, and the two groups of flow control valves (410) are connected with the two groups of first transmission pipes (340) respectively.

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