High energy density solid state battery system based on three-dimensional packaging and biomimetic heat dissipation

Abstract

The application discloses a high-energy-density solid-state battery system based on three-dimensional packaging and biomimetic heat dissipation, relates to the technical field of solid-state batteries, and comprises a plurality of solid-state battery groups, wherein each solid-state battery group is stacked in a three-dimensional matrix, a heat dissipation plate is arranged between the solid-state battery group and an adjacent solid-state battery group, and the heat dissipation plate is internally provided with a heat absorption structure; the heat absorption structure is communicated with a heat dissipation structure located at one side of the solid-state battery group, and the heat absorption structure comprises a plurality of main channels; in the application, the refrigerant and the magnetic liquid in the heat absorption structure are controlled to flow in the main channels and auxiliary channels through the heat dissipation structure, conventional solid-state battery group heat dissipation can be realized, local solid-state battery group heat dissipation can be accelerated in cooperation with the biomimetic channels, and thus the heat dissipation efficiency is improved; a temperature signal of a temperature sensor is collected by a controller, and the working of an electromagnetic coil is controlled to realize corresponding biomimetic channel switching, accurate local heat dissipation can be realized, and the heat dissipation efficiency and reliability are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid-state battery, in particular to a high-energy-density solid-state battery system based on three-dimensional packaging and biomimetic heat dissipation. BACKGROUND

[0002] Solid-state battery is a kind of battery using solid electrode and solid electrolyte. The negative electrode material of solid-state battery can be a composite negative electrode of nano-silicon and graphite, the positive electrode can be lithium manganate, lithium-rich manganese-based material or positive electrode material without lithium, and the electrolyte is solid electrolyte, and the energy density can reach 300-450 watt hours per kilogram. Solid-state battery uses solid electrolyte to replace the electrolyte and separator of traditional lithium-ion battery, and is safer, has higher energy density and stronger cycle performance, and becomes the main research and development direction of next-generation power battery.

[0003] And the current solid-state battery pack is through coating to dissipate heat, or through biomimetic technology to dissipate heat, which cannot well handle the local overheating of the solid-state battery pack.

[0004] In view of the above, a high-energy-density solid-state battery system based on three-dimensional packaging and biomimetic heat dissipation is designed. SUMMARY

[0005] In order to overcome the above-mentioned defects, a high-energy-density solid-state battery system based on three-dimensional packaging and biomimetic heat dissipation is provided.

[0006] The present application realizes the above-mentioned purpose through the following technical scheme:

[0007] A high-energy-density solid-state battery system based on three-dimensional packaging and biomimetic heat dissipation, comprising a plurality of solid-state battery packs, each solid-state battery pack being stacked in a three-dimensional matrix, a heat dissipation plate being arranged between the solid-state battery pack and the adjacent solid-state battery pack, and a heat absorption structure being arranged in the heat dissipation plate; the heat absorption structure is communicated with a heat dissipation structure arranged on one side of the solid-state battery pack, the heat absorption structure comprises a plurality of main channels, each main channel is circulated by a heat dissipation mechanism, a biomimetic channel is further arranged on the main channel, the biomimetic channel is a capillary channel, a valve is arranged at the connection between the outlet of the biomimetic channel and the main channel, and a refrigerant and a magnetic liquid are arranged in the heat dissipation structure.

[0008] An electromagnetic structure is arranged on the heat dissipation plate, the electromagnetic structure is used for controlling the flow direction of the magnetic liquid, and the heat dissipation structure is electrically connected with a controller arranged on one side of the solid-state battery pack.

[0009] Preferably, the heat dissipation mechanism comprises heat dissipation fins and a micro water pump, the micro water pump controls the circulation of the refrigerant and the magnetic liquid in the main channel, the heat dissipation fins, the auxiliary channel and the biomimetic channel, and at the same time, the heat dissipation fins dissipate heat for the refrigerant, so as to ensure the heat dissipation of the internal fixed battery pack.

[0010] As preferred, a plurality of sub-channels are arranged at equal intervals on the main channel, the sub-channels are annular, and one sub-channel is arranged at the outer periphery of each biomimetic channel, so as to regularly dissipate heat for the designated area of the solid-state battery pack and ensure stable heat dissipation of the solid-state battery pack.

[0011] As preferred, the electromagnetic structure comprises four electromagnetic coils, the four electromagnetic coils are electrically connected with the controller, and the four electromagnetic coils are centrally distributed, so that the four electromagnetic coils correspond to the four biomimetic channels at the outer periphery, and the magnetic liquid can flow into the biomimetic channel to be opened.

[0012] As preferred, the electromagnetic structure further comprises a temperature sensor, the temperature sensor is electrically connected with the controller, and the temperature sensor is used for measuring the ambient temperature and transmitting data to the controller, so that the controller can monitor the temperature of each area in real time through the data.

[0013] As preferred, the outer periphery of the biomimetic channel is uniformly distributed with four electromagnetic structures, and each electromagnetic structure is located at the center of the four biomimetic channels, so that the biomimetic channel and the electromagnetic structure are sequentially and centrally symmetrical.

[0014] The high-energy-density solid-state battery system based on three-dimensional packaging and biomimetic heat dissipation has the following advantages:

[0015] 1. The refrigerant and the magnetic liquid in the heat absorption structure are controlled to flow in the main channel and the sub-channel through the heat dissipation structure, so that the conventional solid-state battery pack can be cooled, and the local solid-state battery pack can be cooled quickly through the biomimetic channel, thereby improving the heat dissipation efficiency.

[0016] 2. The controller collects the temperature signal of the temperature sensor and controls the working of the electromagnetic coil, so as to realize the switching of the corresponding biomimetic channel, accurately cool the local area, and improve the heat dissipation efficiency and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0017] The application will be described by way of example and with reference to the accompanying drawings, in which:

[0018] Figure 1 is a structural schematic diagram of the application;

[0019] Figure 2 is a working principle diagram of the solid-state battery pack of the application;

[0020] Figure 3 is a structural schematic diagram of the heat absorption structure of the application;

[0021] Figure 4 is a structural schematic diagram of the electromagnetic structure of the application. DETAILED DESCRIPTION

[0022] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0023] like Figures 1-4 As shown, a high-energy-density solid-state battery system based on three-dimensional packaging and biomimetic heat dissipation includes several solid-state battery packs 1, which are stacked in a three-dimensional matrix. A heat dissipation plate 2 is provided between the solid-state battery packs 1 and adjacent solid-state battery packs 1. The heat dissipation plate 2 has a heat absorption structure inside. The heat absorption structure is connected to a heat dissipation structure 4 located on one side of the solid-state battery pack 1. The heat absorption structure includes several main channels 5. Each main channel 5 realizes heat dissipation circulation through a heat dissipation mechanism. A biomimetic channel 7 is also provided on the main channel 5. The biomimetic channel 7 is a capillary channel. A valve 8 is provided at the connection between the outlet of the biomimetic channel 7 and the main channel 5. The heat dissipation structure 4 contains a refrigerant and a magnetic liquid. An electromagnetic structure 9 is provided on the heat dissipation plate 2. The electromagnetic structure 9 is used to control the flow direction of the magnetic liquid. The heat dissipation structure 4 is electrically connected to a controller 3 located on one side of the solid-state battery pack 1.

[0024] The working principle of this high-energy-density solid-state battery system based on three-dimensional packaging and biomimetic heat dissipation is as follows: the heat dissipation structure 4 controls the flow of refrigerant and magnetic liquid in the heat absorption structure through the main channel 5 and the secondary channel 6, enabling heat dissipation of the conventional solid-state battery pack 1. Simultaneously, temperature sensors 11 are evenly distributed on the heat sink 2 to monitor the ambient temperature in real time. The controller 3 then analyzes the data in real time to detect when the temperature of a localized solid-state battery pack 1 is too high. In this case, the corresponding biomimetic channel 7 needs to be opened to assist in heat dissipation. Under normal conditions, due to the presence of valve 8, the outlet of biomimetic channel 7 is closed from the main channel 5. At this time, the controller 3 emits an electromagnetic field through the corresponding electromagnetic structure 9, generating a magnetic force at the inlet of the biomimetic channel 7 that needs to be opened. Subsequently, the magnetic liquid is drawn in, and due to the impact force of the magnetic liquid, valve 8 is briefly opened, allowing the refrigerant to accelerate heat dissipation in that area through biomimetic channel 7. The controller 3 can also control the opening frequency and duration of valve 8 by controlling the duty cycle of the electromagnetic field generated by the electromagnetic structure 9, thereby controlling the duration and frequency of accelerated heat dissipation.

[0025] Specifically, the heat dissipation mechanism includes heat dissipation fins and a micro water pump. The micro water pump controls the refrigerant and magnetic liquid inside each main channel 5 to circulate in the main channel 5, heat dissipation fins, secondary channel 6 and bionic channel 7. At the same time, the heat dissipation fins dissipate heat from the refrigerant to ensure heat dissipation inside the fixed battery pack.

[0026] Specifically, the main channel 5 is provided with a plurality of sub-channels 6 at equal intervals, the sub-channels 6 are annular, and each bionic channel 7 is provided with a sub-channel 6 at the outer periphery, and the sub-channels 6 are used for regular heat dissipation of the specified area of the solid-state battery pack 1, so as to ensure stable heat dissipation of the solid-state battery pack 1.

[0027] Specifically, the electromagnetic structure 9 includes four electromagnetic coils 10, the four electromagnetic coils 10 are electrically connected with the controller 3, and the four electromagnetic coils 10 are centrally distributed, so that the four electromagnetic coils 10 correspond to the four bionic channels 7 at the outer periphery, and the magnetic liquid can flow into the bionic channel 7 to be opened.

[0028] Specifically, the electromagnetic structure 9 is also provided with a temperature sensor 11, the temperature sensor 11 is electrically connected with the controller 3, and the temperature sensor 11 is used for measuring the surrounding temperature and transmitting data to the controller 3, so that the controller 3 can monitor the temperature of each area in real time through the data.

[0029] Specifically, the outer periphery of the bionic channel 7 is uniformly distributed with four electromagnetic structures 9, and each electromagnetic structure 9 is located at the center of the four bionic channels 7, so that the bionic channel 7 and the electromagnetic structure 9 can be sequentially and centrally symmetrical.

[0030] According to the above disclosure, the related personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A high-energy-density solid-state battery system based on three-dimensional packaging and biomimetic heat dissipation, characterized in that: It includes several solid-state battery packs, which are stacked in a three-dimensional matrix. A heat sink is provided between the solid-state battery packs and adjacent solid-state battery packs. The heat sink has a heat absorption structure inside. The heat absorption structure is connected to a heat dissipation structure located on one side of the solid-state battery pack. The heat absorption structure includes several main channels. Each main channel achieves heat dissipation circulation through a heat dissipation mechanism. A biomimetic channel is also provided on the main channel. The biomimetic channel is a capillary channel. A valve is provided at the connection between the outlet of the biomimetic channel and the main channel. The heat dissipation structure contains a refrigerant and a magnetic liquid. An electromagnetic structure is provided on the heat sink, which is used to control the flow direction of the magnetic liquid. The heat sink is electrically connected to the controller located on one side of the solid-state battery pack. The heat dissipation mechanism includes heat dissipation fins and a micro water pump. The micro water pump controls the refrigerant and magnetic liquid inside each main channel to circulate in the main channel, heat dissipation fins, secondary channel and biomimetic channel. The main channel is provided with several secondary channels at equal intervals. The secondary channels are ring-shaped, and each biomimetic channel has a secondary channel on its outer periphery. The electromagnetic structure includes four electromagnetic coils, all of which are electrically connected to the controller. The electromagnetic structure also includes a temperature sensor, which is electrically connected to the controller. Four electromagnetic structures are evenly distributed around the outer periphery of the bionic channel, with each electromagnetic structure located at the center of the four bionic channels.

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