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

Abstract

The invention discloses a high-energy-density solid-state battery system based on three-dimensional packaging and bionic heat dissipation, and relates to the technical field of solid-state batteries, the high-energy-density solid-state battery system comprises a plurality of solid-state battery packs, the solid-state battery packs are stacked in a three-dimensional matrix, a heat dissipation plate is arranged between every two adjacent solid-state battery packs, and a heat absorption structure is arranged in each heat dissipation plate; the heat absorption structure is communicated with the heat dissipation structure located on one side of the solid-state battery pack, the heat absorption structure comprises a plurality of main channels, and the heat dissipation structure controls refrigerant and magnetic liquid in the heat absorption structure to flow in the main channels and the auxiliary channels, so that conventional heat dissipation of the solid-state battery pack can be realized; local heat dissipation of the solid-state battery pack can be accelerated in cooperation with the bionic channel, and then the heat dissipation efficiency is improved; the controller collects the temperature signal of the temperature sensor and controls the work of the electromagnetic coil at the same time, so that the corresponding bionic channel switch is realized, local accurate heat dissipation can be realized, and the heat dissipation efficiency and reliability are improved.

Description

Technical Field

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

[0002] Solid-state batteries use solid electrodes and solid electrolytes. The negative electrode material can be a composite of nanosilicon and graphite, the positive electrode can be lithium manganese oxide, a lithium-rich manganese-based material, or a lithium-free positive electrode material. The electrolyte is a solid electrolyte, and the energy density can reach 300-450 watt-hours / kg. Solid-state batteries replace the electrolyte and separator of traditional lithium-ion batteries with solid electrolytes, offering greater safety, higher energy density, and improved cycle performance. They are becoming a major research and development direction for the next generation of power batteries.

[0003] Current solid-state battery packs dissipate heat through coatings or bionic technology, and are unable to effectively handle local overheating of solid-state battery packs.

[0004] In summary, a high energy density solid-state battery system based on three-dimensional packaging and bionic heat dissipation is designed. Summary of the Invention

[0005] In order to overcome the above-mentioned deficiencies, the present invention provides a high energy density solid-state battery system based on three-dimensional packaging and bionic heat dissipation.

[0006] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0007] A high-energy-density solid-state battery system based on three-dimensional packaging and bionic heat dissipation includes several solid-state battery packs, each stacked in a three-dimensional matrix. A heat sink is provided between adjacent solid-state battery packs, and a heat absorption structure is provided inside the heat sink. 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 of which realizes a heat dissipation cycle through a heat dissipation mechanism. The main channels are also provided with bionic channels in the form of capillaries. A valve is provided at the connection between the bionic channel outflow port and the main channel. A refrigerant and a magnetic liquid are provided inside the heat dissipation structure.

[0008] An electromagnetic structure is provided on the heat dissipation plate, which is used to control the flow direction of the magnetic liquid. The heat dissipation structure is electrically connected to a controller located on one side of the solid-state battery pack.

[0009] Preferably, the heat dissipation mechanism includes heat dissipation fins and a micro water pump. The micro water pump controls the refrigerant and magnetic liquid in each main channel to circulate in the main channel, heat dissipation fins, secondary channels and bionic channels. At the same time, the heat dissipation fins dissipate heat for the refrigerant to ensure heat dissipation inside the fixed battery pack.

[0010] Preferably, a number of auxiliary channels are provided at equal intervals on the main channel. The auxiliary channels are annular, and an auxiliary channel is provided on the periphery of each bionic channel. The auxiliary channels are used to provide conventional heat dissipation to designated areas of the solid-state battery pack to ensure stable heat dissipation of the solid-state battery pack.

[0011] Preferably, the electromagnetic structure includes four electromagnetic coils, all of which are electrically connected to the controller. The four electromagnetic coils are centrally distributed so that the four electromagnetic coils correspond to four bionic channels on the periphery to control the flow of magnetic liquid into the bionic channel that needs to be opened.

[0012] Preferably, a temperature sensor is further provided in the electromagnetic structure, which is electrically connected to the controller. The temperature sensor is used to measure the ambient temperature and transmit data to the controller, which monitors the temperature of each area in real time through the data.

[0013] Preferably, four electromagnetic structures are evenly distributed on the periphery of the bionic channel, and each electromagnetic structure is located at the center of the four bionic channels, so that the bionic channel and the electromagnetic structure can be centrally symmetrical in sequence.

[0014] The beneficial effects of the present invention are as follows: In the high energy density solid-state battery system based on three-dimensional packaging and bionic heat dissipation:

[0015] 1. The heat dissipation structure controls the flow of refrigerant and magnetic fluid in the heat absorption structure in the main channel and the secondary channel, which can achieve conventional heat dissipation of the solid-state battery pack. In combination with the bionic channel, it can accelerate the local heat dissipation of the solid-state battery pack, thereby improving its heat dissipation efficiency.

[0016] 2. The controller collects the temperature signal of the temperature sensor and controls the operation of the electromagnetic coil to realize the corresponding bionic channel switch, which can accurately dissipate heat locally and improve the heat dissipation efficiency and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 1 It is a structural schematic diagram of the present invention;

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

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

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

[0022] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0023] like Figures 1-4 As shown, a high-energy-density solid-state battery system based on three-dimensional packaging and bionic heat dissipation includes several solid-state battery packs 1, each solid-state battery pack 1 is stacked in a three-dimensional matrix, a heat sink 2 is provided between the solid-state battery pack 1 and the adjacent solid-state battery pack 1, and a heat absorption structure is provided inside the heat sink 2; the heat absorption structure is connected to the 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 a heat dissipation cycle through a heat dissipation mechanism, a bionic channel 7 is further provided on the main channel 5, the bionic channel 7 is a capillary channel, and a valve 8 is provided at the connection between the outflow of the bionic channel 7 and the main channel 5, a refrigerant and a magnetic liquid are provided inside the heat dissipation structure 4, 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, and 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 that the heat dissipation structure 4 controls the flow of refrigerant and magnetic liquid in the heat-absorbing structure in the main channel 5 and the auxiliary channel 6, which can achieve conventional heat dissipation of the solid-state battery pack 1. At the same time, the temperature sensor 11 is evenly distributed on the heat dissipation plate 2 to detect the surrounding temperature in real time. The controller 3 then analyzes the data in real time to detect when the temperature of the local solid-state battery pack 1 is too high. At this time, it is necessary to open the corresponding biomimetic channel 7 to assist in heat dissipation. Under normal conditions, due to the presence of valve 8, the outflow of the biomimetic channel 7 and the main channel 5 are closed. At this time, the controller 3 will emit an electromagnetic field through the electromagnetic structure 9 at the corresponding position, so that a magnetic force is generated at the inflow of the biomimetic channel 7 that needs to be opened. The magnetic liquid will then be sucked in. Due to the impact force of the magnetic liquid, the valve 8 is temporarily opened, and the refrigerant will accelerate the heat dissipation of the area through the biomimetic channel 7. At the same time, the controller 3 can also control the frequency and time of valve 8 opening by controlling the duty cycle of the electromagnetic field generated by the electromagnetic structure 9, thereby controlling the time 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 in each main channel 5 to circulate in the main channel 5, the heat dissipation fins, the secondary channel 6 and the bionic channel 7. At the same time, the heat dissipation fins dissipate heat for the refrigerant to ensure heat dissipation inside the fixed battery pack.

[0026] Specifically, a number of auxiliary channels 6 are provided at equal intervals on the main channel 5. The auxiliary channels 6 are annular. An auxiliary channel 6 is provided on the periphery of each bionic channel 7. The auxiliary channels 6 are used to provide conventional heat dissipation to a designated area of ​​the solid-state battery pack 1 to ensure stable heat dissipation of the solid-state battery pack 1.

[0027] Specifically, the electromagnetic structure 9 includes four electromagnetic coils 10, which are all electrically connected to the controller 3. The four electromagnetic coils 10 are centrally distributed, so that the four electromagnetic coils 10 correspond to the four bionic channels 7 on the periphery to control the flow of magnetic liquid into the bionic channel 7 that needs to be opened.

[0028] Specifically, a temperature sensor 11 is further provided in the electromagnetic structure 9. The temperature sensor 11 is electrically connected to the controller 3. The temperature sensor 11 is used to measure the ambient temperature and transmit data to the controller 3. The controller 3 uses the data to monitor the temperature of each area in real time.

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

[0030] The above description is for inspiration. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical concept of this invention. The technical scope of this invention is not limited to the content of the specification, but 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 bionic heat dissipation, characterized by: The invention comprises a plurality of solid-state battery packs, each of which is stacked in a three-dimensional matrix. A heat sink is provided between adjacent solid-state battery packs, and a heat absorption structure is provided inside the heat sink. 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 a plurality of main channels, each of which realizes a heat dissipation cycle through a heat dissipation mechanism. The main channels are also provided with bionic channels, which are capillary channels. A valve is provided at the connection between the bionic channel outflow port and the main channel. A refrigerant and a magnetic liquid are provided inside the heat dissipation structure. An electromagnetic structure is provided on the heat dissipation plate, which is used to control the flow direction of the magnetic liquid. The heat dissipation structure is electrically connected to a controller located on one side of the solid-state battery pack.

2. The high energy density solid-state battery system based on three-dimensional packaging and bionic heat dissipation according to claim 1 is characterized by: The heat dissipation mechanism includes heat dissipation fins and a micro water pump. The micro water pump controls the refrigerant and magnetic liquid in each main channel to circulate in the main channel, heat dissipation fins, auxiliary channels and bionic channels.

3. The high energy density solid-state battery system based on three-dimensional packaging and bionic heat dissipation according to claim 1 is characterized in that: A plurality of auxiliary channels are arranged at equal intervals on the main channel. The auxiliary channels are annular, and an auxiliary channel is arranged on the periphery of each bionic channel.

4. The high energy density solid-state battery system based on three-dimensional packaging and bionic heat dissipation according to claim 1 is characterized in that: The electromagnetic structure includes four electromagnetic coils, and the four electromagnetic coils are all electrically connected to the controller.

5. The high energy density solid-state battery system based on three-dimensional packaging and bionic heat dissipation according to claim 1 is characterized in that: A temperature sensor is also provided in the electromagnetic structure, and the temperature sensor is electrically connected to the controller.

6. The high energy density solid-state battery system based on three-dimensional packaging and bionic heat dissipation according to claim 1 is characterized in that: Four electromagnetic structures are evenly distributed on the periphery of the bionic channel, and each electromagnetic structure is located at the center of the four bionic channels.

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