Vehicle and solid-state battery system thereof

Abstract

The invention discloses a vehicle and a solid-state battery system thereof, and relates to the technical field of solid-state batteries. The solid-state battery system comprises at least one solid-state battery module, a pressure adjusting module and a gas providing module, and the solid-state battery module comprises a plurality of solid-state batteries, a battery management module, a pressure sensing module and a pressure control module which are sequentially arranged and electrically connected. The battery management module is used for respectively controlling the working states of the pressure adjusting module and the pressure control module according to the pressure information between the solid-state batteries sensed by the pressure sensing module, so that the pressure between the solid-state batteries is within a preset pressure range, and the stability of the working performance of the solid-state battery module is ensured. Meanwhile, the vehicle comprises the temperature adjusting module, the temperature adjusting module comprises the air compressor, and the air compressor is reused as the gas providing module, so that the structure of the solid-state battery module is simplified, and the structure of the solid-state battery system is simplified.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of solid-state battery technology, and in particular, to a vehicle and a solid-state battery system thereof. Background Art

[0002] With the development of science and technology, the safety and stability of vehicle operation have become important factors in measuring vehicle performance. At present, solid-state batteries that use solid electrolytes instead of liquid electrolytes can improve the energy density of batteries while improving battery safety, so they have become a hot topic of research.

[0003] In solid-state batteries, the solid electrolyte and the positive and negative electrodes of the battery are in solid-solid contact. Therefore, it is necessary to provide appropriate extrusion pressure to ensure the interface stability between the electrolyte and the positive and negative electrodes. If the pressure between the solid-state batteries is too high, it will cause local stress concentration points, which may cause premature short circuits and affect the service life of the battery. In severe cases, it may also cause safety problems such as fire. If the pressure between the solid-state batteries is too low, the interface contact will be poor, the resistance will increase and the overall performance of the battery will be reduced.

[0004] Existing solid-state battery modules and system structures mostly use uniaxial rigid fastening, which cannot ensure the stability of the extrusion force of the solid-state battery during application, nor can it ensure the stability of the contact between the electrolyte and the positive and negative electrodes in the battery. Therefore, it is urgent to solve the technical problem that the extrusion force provided by the solid-state battery module and system in the existing technology is unstable, which leads to unstable performance of the solid-state battery. Summary of the invention

[0005] The present invention provides a vehicle and a solid-state battery system thereof, so as to maintain the pressure between each solid-state battery within a preset pressure range, while being able to simplify the structure of the solid-state battery system.

[0006] A first aspect of the present invention provides a solid-state battery system for a vehicle, comprising: at least one solid-state battery module, a pressure regulating module, and a gas supply module;

[0007] The solid-state battery module comprises a plurality of solid-state batteries, a battery management module, a pressure sensing module and a pressure control module which are sequentially arranged and electrically connected; the battery management module is electrically connected to each of the solid-state batteries, the pressure sensing module and the pressure control module respectively;

[0008] The gas outlet of the gas supply module is connected to the gas inlet of the pressure control module through a gas pipeline; the pressure regulating module is arranged in the gas pipeline; the battery management module is also electrically connected to the pressure regulating module;

[0009] The battery management module is used to obtain the status information of each of the solid-state batteries, and control the charge and discharge status of each of the solid-state batteries according to the status information of each of the solid-state batteries;

[0010] The battery management module is further used to control the working states of the pressure regulating module and the pressure control module respectively according to the pressure information between the solid-state batteries sensed by the pressure sensing module, so that the pressure between the solid-state batteries is within a preset pressure range;

[0011] The pressure regulating module is used to regulate the gas volume of the compressed gas provided by the gas supply module and transmitted to the pressure control module under the control of the battery management module;

[0012] The vehicle at least includes a temperature regulating module; the temperature regulating module at least includes an air compressor, and the air compressor is reused as the gas supply module.

[0013] Optionally, the pressure sensing module includes at least one pressure sensor; at least a portion of the pressure sensor is disposed between two adjacent solid-state batteries.

[0014] Optionally, the solid-state battery module includes n solid-state batteries, and any two adjacent solid-state batteries are respectively the i-th solid-state battery and the i+1-th solid-state battery; n and i are both positive integers, and n is greater than or equal to 2, and i is less than or equal to n;

[0015] When n is an odd number and the pressure sensing module includes a pressure sensor, the pressure sensor is located at the Solid-state batteries and Between solid-state batteries, or Solid-state batteries and between solid-state batteries; or,

[0016] When n is an even number and the pressure sensing module includes one pressure sensor, the pressure sensor is located between the n / 2th solid-state battery and the n / 2+1th solid-state battery.

[0017] Optionally, the pressure control module includes at least one cylinder; the cylinder is arranged on one side of each of the solid-state batteries;

[0018] The battery management module is specifically used to control the pressure applied to each of the solid-state batteries by the cylinder according to the pressure information between the solid-state batteries sensed by the pressure sensing module.

[0019] Optionally, the pressure control module further includes at least one pressure plate; the pressure plate is located between the cylinder and each of the solid-state batteries.

[0020] Optionally, the solid-state battery module further includes two end plates and two insulators;

[0021] The cylinder, the pressure plate and each of the solid-state batteries are located between the two end plates;

[0022] Each of the solid-state batteries is insulated from the pressure plate and / or the end plate by the insulator.

[0023] Optionally, the pressure regulating module includes at least one pressure regulating valve arranged in one-to-one correspondence with at least one of the solid-state battery modules;

[0024] The gas outlet of the gas supply module is connected to the gas inlet of the pressure control module in at least one of the solid-state battery modules through at least one of the gas pipelines;

[0025] The pressure regulating valves are arranged in the gas pipelines in a one-to-one correspondence.

[0026] Optionally, the solid-state battery system of the vehicle further includes: a reminder module;

[0027] The battery management module is also connected to the reminder module; the battery management module is also used to control the reminder module to issue a warning when it is determined that the pressure of the solid-state battery in the solid-state battery module is within an abnormal pressure range based on the pressure information between the solid-state batteries sensed by the pressure sensing module.

[0028] Optionally, the vehicle further includes a dashboard; and the reminder module includes the dashboard.

[0029] Optionally, the battery management module is also used to control the solid-state battery module to stop charging and discharging when it is determined that the pressure of the solid-state battery in the solid-state battery module is within an abnormal pressure range based on the pressure information between the solid-state batteries sensed by the pressure sensing module.

[0030] A second aspect of the present invention provides a vehicle, comprising at least: a fixed battery system for a vehicle as described above;

[0031] The vehicle also includes a temperature regulation module, and the air compressor of the temperature regulation module is reused as a gas supply module for the solid-state battery system of the vehicle.

[0032] The technical solution provided by the present invention is to set a solid-state battery module, a pressure regulating module and a gas supply module in the solid-state battery system of the vehicle, and to set a plurality of solid-state batteries, a battery management module, a pressure sensing module and a pressure control module arranged in sequence and electrically connected in the solid-state battery module, wherein the battery management module can control the pressure regulating module to adjust the amount of gas provided by the gas supply module to the pressure control module as required according to the pressure information between the solid-state batteries sensed by the pressure sensing module, so that the pressure control module can accurately control the pressure inside the solid-state battery module, so that the pressure between the solid-state batteries is maintained within a preset pressure range, thereby ensuring the stability of the working performance of the solid-state battery module. Furthermore, the vehicle includes a temperature regulating module, and the temperature regulating module includes an air compressor. By reusing the air compressor as the gas supply module of the solid-state battery system, it is helpful to simplify the structure of the solid-state battery module, thereby helping to simplify the structure of the solid-state battery system.

[0033] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 is a schematic structural diagram of a solid-state battery system for a vehicle provided by an embodiment of the present invention;

[0036] Figure 2 is a schematic structural diagram of another solid-state battery system for a vehicle provided by an embodiment of the present invention;

[0037] Figure 3 is a schematic structural diagram of another solid-state battery system for a vehicle provided by an embodiment of the present invention;

[0038] Figure 4 is a schematic structural diagram of another solid-state battery system for a vehicle provided by an embodiment of the present invention;

[0039] Figure 5 is a schematic structural diagram of another solid-state battery system for a vehicle provided by an embodiment of the present invention;

[0040] Figure 6 is a schematic structural diagram of another solid-state battery system for a vehicle provided by an embodiment of the present invention;

[0041] Figure 7 It is a schematic diagram of the structure of another solid-state battery system for a vehicle provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] Figure 1 is a schematic diagram of the structure of a solid-state battery system for a vehicle provided by an embodiment of the present invention, such as Figure 1As shown, the solid-state battery system of the vehicle includes at least one solid-state battery module 10, a pressure regulating module 2 and a gas supply module 3; the solid-state battery module 10 includes a plurality of solid-state batteries 11 arranged in sequence and electrically connected, a battery management module 4, a pressure sensing module 5 and a pressure control module 6; the battery management module 4 is electrically connected to each solid-state battery, the pressure sensing module 5 and the pressure control module 6 respectively; the gas outlet of the gas supply module 3 is connected to the gas inlet of the pressure control module 6 through a gas pipeline; the pressure regulating module 2 is arranged in the gas pipeline; the battery management module 4 is also electrically connected to the pressure regulating module 2; the battery management module 4 is used to obtain each solid-state battery status information of each solid-state battery, and controls the charge and discharge status of each solid-state battery according to the status information of each solid-state battery; the battery management module 4 is also used to control the working states of the pressure regulating module 2 and the pressure control module 6 respectively according to the pressure information between each solid-state battery sensed by the pressure sensing module 5, so that the pressure between each solid-state battery is within a preset pressure range; the pressure regulating module 2 is used to adjust the gas amount of compressed gas provided by the gas supply module 3 and transmitted to the pressure control module 6 under the control of the battery management module 4; the vehicle includes at least a temperature regulating module; the temperature regulating module includes at least an air compressor, and the air compressor is reused as the gas supply module 3.

[0045] It can be understood that the solid-state battery system of the vehicle includes at least one solid-state battery module 10. It can be understood that the solid-state battery system of the vehicle includes one or more solid-state battery modules 10, such as Figure 1 As shown, the solid-state battery system of the vehicle may include a solid-state battery module 10, or, as shown Figure 2 As shown, the number of solid-state battery modules in the solid-state battery system of the vehicle can also be three, namely solid-state battery module 101, solid-state battery module 102 and solid-state battery module 103. The number of solid-state battery modules depends on the design and requirements of the solid-state battery system of the vehicle. A single solid-state battery module or a combination of multiple solid-state battery modules can provide different battery capacities and power outputs to meet the energy needs and performance requirements of a specific vehicle. The present invention does not limit the number of solid-state battery modules. For ease of description, without special limitations, the embodiments of the present invention take the structure of a solid-state battery module 101 in a solid-state battery system as an example to exemplarily illustrate the technical solutions of the embodiments of the present invention.

[0046] Continue to refer Figure 1The solid-state battery module 10 may include a plurality of solid-state batteries 11. The plurality of solid-state batteries 11 of the same solid-state battery module 10 are sequentially arranged and electrically connected in the transverse direction or the longitudinal direction. The solid-state batteries in the same solid-state battery module may be connected in series and / or in parallel, and may be designed according to actual needs. The embodiment of the present invention does not specifically limit this. The solid-state battery module 10 may also include a battery management module 4. The battery management module 4 may be specifically understood as an integrated circuit or system for monitoring, controlling and protecting solid-state batteries. The solid-state battery module 10 may also include a pressure sensing module 5 and a pressure control module 6. The pressure sensing module 5 may sense the pressure information between the solid-state batteries. The pressure control module 6 may control the pressure between the solid-state batteries according to the pressure information sensed by the pressure sensing module 5 under the control of the battery management module 4.

[0047] Continue to refer Figure 1 , the gas supply module 3 can provide compressed gas, and the gas supply module 3 can reuse the air compressor of the existing temperature control module in the vehicle. Among them, the temperature control module in the vehicle can be specifically understood as a system or device light for adjusting the temperature, humidity and comfort in the vehicle. For example, the temperature control module may include at least one of an air conditioning system, a seat heating system, a cabin preheating system, and a cooling system of the vehicle's electronic control box. The air compressor can be specifically understood as a device in the temperature control module for compressing the refrigerant and converting it into a high-pressure, high-temperature gas. By compressing the refrigerant, it can absorb heat and release heat in the evaporator, thereby adjusting the temperature in the vehicle. In this embodiment, the air compressor of the temperature control module in the vehicle is reused as the gas supply module 3 in the solid-state battery system of the vehicle, and the compressed gas in the air compressor is transmitted to the pressure control module 6 through the gas pipeline, so that the pressure control module 6 can accurately control the pressure inside the solid-state battery module 10, so that the pressure between each solid-state battery is within a preset pressure range. By reusing the existing air compressor in the vehicle as the gas supply module 3, it is helpful to simplify the structure of the solid-state battery module 10, thereby simplifying the structure of the solid-state battery system, and at the same time can reduce the manufacturing cost of the solid-state battery system and reduce resource waste.

[0048] A pressure regulating module 2 is also provided in the gas transmission pipeline between the gas supply module 3 and the pressure control module 6. The pressure regulating module 2 can adjust the amount of gas transmitted from the gas supply module 3 to the pressure control module 6, so as to accurately control the amount of gas transmitted to the pressure control module 6 while ensuring that the pressure control module 6 controls the pressure between each solid-state battery within a preset pressure range, thereby ensuring the stability of the working performance of the solid-state battery module 10 and helping to reduce the power consumption of the gas supply module 3.

[0049] Among them, the battery management module 4 is electrically connected to each solid-state battery, the pressure sensing module 5 and the pressure control module 6, and the pressure regulating module 2, respectively, so that the battery management module 4 can exchange signals with each solid-state battery, the pressure sensing module 5 and the pressure control module 6, and the pressure regulating module 2, respectively, so as to control the charging and discharging state of each solid-state battery and the pressure between each solid-state battery.

[0050] It can be understood that the battery management module 4 can be connected to each solid-state battery through wires to ensure accurate monitoring and management of the solid-state battery 11, and the battery management module 4 can be connected to the pressure sensing module 5 and the pressure control module 6 through wires, or data transmission and communication can be carried out through communication protocols to realize monitoring and control of pressure information between each solid-state battery.

[0051] Specifically, the battery management module 4 can obtain the remaining power, charge and discharge current, charge and discharge voltage, etc. of each solid-state battery, and control the charge and discharge state of the solid-state battery 11 based on the remaining power, charge and discharge current, charge and discharge voltage, etc., to ensure that each solid-state battery in the solid-state battery module 10 can be charged and discharged evenly. At the same time, the battery management module 4 can also obtain the pressure information between each solid-state battery based on the pressure sensing module 5, so as to be able to adjust the amount of gas provided to the pressure control module 6 according to the pressure information between each solid-state battery, and control the pressure provided by the pressure control module 6 to each solid-state battery, so that the pressure between each solid-state battery in the solid-state battery module 10 is maintained within a preset pressure range, thereby preventing the pressure between each solid-state battery from being too high, while ensuring that each solid-state battery in the solid-state battery module 10 has a smaller contact resistance, thereby improving the stability of the working performance of the solid-state battery module 10.

[0052] Exemplarily, when the vehicle is running, the battery temperature rises, causing the solid-state battery to expand as a whole, resulting in an increase in pressure between each solid-state battery. When the pressure sensing module 5 detects an increase in pressure between each solid-state battery, the detection result will be fed back to the battery management module 4. The battery management module 4 controls the pressure regulator 2 to reduce the gas flow rate of the compressed gas provided by the gas supply module 3 to the pressure control module 6 according to the pressure information detected by the pressure sensing module 5, so that the pressure control module 6 reduces the pressure between each solid-state battery in the solid-state battery module 10, so that the pressure between each solid-state battery is reduced and restored to a preset pressure range; conversely, when encountering a low temperature condition, the solid-state battery shrinks as a whole, resulting in a decrease in pressure between each solid-state battery. When the pressure sensing module 5 detects a decrease in pressure between each solid-state battery, the detection result will be fed back to the battery management module 4. The battery management module 4 controls the pressure regulator 2 to increase the gas flow rate of the compressed gas provided by the gas increase supply module 3 to the pressure control module 6 according to the pressure information detected by the pressure sensing module 5, so that the pressure control module 6 increases the pressure between each solid-state battery in the solid-state battery module 10, so that the pressure between each solid-state battery is increased and restored to a preset pressure range.

[0053] The technical solution provided by the present invention is to set a solid-state battery module, a pressure regulating module and a gas supply module in the solid-state battery system of the vehicle, and to set a plurality of solid-state batteries, a battery management module, a pressure sensing module and a pressure control module arranged in sequence and electrically connected in the solid-state battery module, wherein the battery management module can control the pressure regulating module to adjust the amount of gas provided by the gas supply module to the pressure control module as required according to the pressure information between the solid-state batteries sensed by the pressure sensing module, so that the pressure control module can accurately control the pressure inside the solid-state battery module, so that the pressure between the solid-state batteries is maintained within a preset pressure range, thereby ensuring the stability of the working performance of the solid-state battery module. Furthermore, the vehicle includes a temperature regulating module, and the temperature regulating module includes an air compressor. By reusing the air compressor as the gas supply module of the solid-state battery system, it is helpful to simplify the structure of the solid-state battery module, thereby helping to simplify the structure of the solid-state battery system.

[0054] Optional, such as Figure 3 As shown, the pressure sensing module 5 includes at least one pressure sensor 50; at least a portion of the pressure sensor 50 is disposed between two adjacent solid-state batteries.

[0055] The pressure sensor 50 can be specifically understood as a sensor for measuring the pressure between solid-state batteries, for example, it can include piezoelectric ceramics or piezoresistors, etc., which can convert pressure signals into electrical signal outputs, thereby realizing the detection of pressure information between solid-state batteries. The pressure sensing module 5 can include one pressure sensor or multiple pressure sensors, such as Figure 3 As shown, the pressure sensing module 5 may include a pressure sensor 50, or, as shown in FIG. Figure 4 As shown, the pressure sensing module 5 may include a plurality of pressure sensors, for example, the pressure sensing module 5 may include a pressure sensor 501 and a pressure sensor 502. The pressure sensor may be partially or completely disposed between two adjacent solid-state batteries, and the embodiment of the present invention does not limit this as long as the pressure between the solid-state batteries can be detected.

[0056] Optional, such as Figure 3 As shown in FIG. 1 , when the pressure sensing module 5 includes a pressure sensor 50, the pressure sensor 50 can be arranged between two adjacent solid-state batteries in the middle position to improve the accuracy of pressure detection between the solid-state batteries, that is, when the solid-state battery module includes n solid-state batteries, and any two adjacent solid-state batteries are respectively the i-th solid-state battery and the i+1-th solid-state battery, if n is an odd number, and the pressure sensing module 5 includes a pressure sensor 50, then the pressure sensor 50 is located between the i+1-th solid-state battery and the solid-state battery. Solid-state batteries and Between solid-state batteries, or Solid-state batteries and or, if n is an even number and the pressure sensing module 5 includes a pressure sensor 50, the pressure sensor 50 is located between the n / 2th solid-state battery and the n / 2+1th solid-state battery. Wherein, n and i are both positive integers, and n is greater than or equal to 2, and i is less than or equal to n.

[0057] In an exemplary embodiment, when the solid-state battery module includes 5 solid-state batteries, the solid-state batteries arranged in sequence may be a first solid-state battery, a second solid-state battery, a third solid-state battery, a fourth solid-state battery and a fifth solid-state battery, respectively. At this time, if the pressure sensing module includes a pressure sensor 50, the pressure sensor 50 may be located between the second solid-state battery and the third solid-state battery, or the pressure sensor may be located between the third solid-state battery and the fourth solid-state battery.

[0058] In another exemplary embodiment, when the solid-state battery module includes 6 solid-state batteries, the solid-state batteries arranged in sequence may be the first solid-state battery, the second solid-state battery, the third solid-state battery, the fourth solid-state battery, the fifth solid-state battery and the sixth solid-state battery; if the pressure sensing module includes a pressure sensor 50, the pressure sensor 50 may be located between the third solid-state battery and the fourth solid-state battery. The setting position of the pressure sensor 50 can ensure that the pressure sensor is located at the center of each solid-state battery, so as to more accurately detect the pressure changes inside the solid-state battery system and improve the accuracy of pressure detection between solid-state batteries.

[0059] In another optional embodiment, when the pressure sensing module 5 includes multiple pressure sensors, for example, when the number of solid-state batteries in the same solid-state battery module 10 is n, the number of pressure sensors can be n-1, and each pressure sensor can be respectively arranged between two adjacent solid-state batteries so as to be able to test the pressure between each solid-state battery separately.

[0060] Exemplarily, when the pressure information detected by each pressure sensor contains pressure information that exceeds the preset pressure range, the battery management module 4 will control the pressure regulating module 2 to adjust the amount of gas provided by the gas supply module 3 to the pressure control module 6 as needed based on the pressure information detected by the pressure sensor, so as to maintain the pressure inside the solid-state battery module 10 within the preset pressure range; or, when it is determined based on the pressure information detected by each pressure sensor that the average pressure detected by each pressure sensor exceeds the preset pressure range, the battery management module 4 will control the pressure regulating module 2 to adjust the amount of gas provided by the gas supply module 3 to the pressure control module 6 as needed based on the pressure information detected by the pressure sensor, so as to maintain the pressure inside the solid-state battery module 10 within the preset pressure range.

[0061] In this embodiment, by setting a pressure sensor between solid-state batteries, the pressure changes inside the solid-state battery system can be monitored in real time, so that the battery management module can adjust the pressure inside the solid-state battery system in time, thereby ensuring the stability of the working performance of the solid-state battery module.

[0062] Optional, Figure 5 is a schematic diagram of the structure of another solid-state battery system for a vehicle provided by an embodiment of the present invention, such as Figure 5 As shown, the pressure control module 6 includes at least one cylinder 62; the cylinder 62 is arranged on one side of each solid-state battery; the battery management module 4 is specifically used to control the pressure applied to each solid-state battery by the cylinder 62 according to the pressure information between each solid-state battery sensed by the pressure sensing module 5.

[0063] Among them, the cylinder 62 may include components such as a piston, a piston rod, a cylinder barrel and a seal. When the cylinder 62 is filled with compressed gas provided by the gas supply module, the piston in the cylinder 62 will move under the action of pressure, thereby adjusting the pressure applied to each solid-state battery.

[0064] It is understood that the pressure control module 6 may include a cylinder 62 (eg Figure 5 as shown), or Figure 6 As shown, the pressure control module 6 may include two cylinders, namely, cylinder 621 and cylinder 622. When the pressure control module 6 includes one cylinder 62, the cylinder 62 may adjust the pressure applied to each solid-state battery at one side of each solid-state battery. Figure 6As shown, when the pressure control module 6 includes two cylinders, namely cylinder 621 and cylinder 622, cylinder 621 and cylinder 622 can be respectively located on both sides of each solid-state battery, and the pressure applied on both sides of each solid-state battery can be adjusted to maintain the pressure inside the solid-state battery module 10 within a preset pressure range.

[0065] Specifically, Figure 5 As shown, the battery management module 4 controls the pressure regulating module 2 to adjust the amount of compressed gas provided by the gas supply module 3 to the cylinder 62 in the pressure control module 6 as needed based on the pressure information between the solid-state batteries sensed by the pressure sensor in the pressure sensing module 5, so that the cylinder 62 can accurately adjust the pressure applied to each solid-state battery. The pressure control module 6 can accurately control the pressure inside the solid-state battery module 10 to ensure that the pressure between the solid-state batteries is maintained within a preset pressure range, thereby improving the stability of the working performance of the solid-state battery module 10.

[0066] Optional, continue to refer to Figure 5 The pressure control module 6 also includes at least one pressure plate 63; the pressure plate 63 is located between the cylinder 62 and each solid-state battery.

[0067] The pressure plate 63 can be specifically understood as a flat structure made of a solid material, such as metal or a composite material. Specifically, the surface of the pressure plate 63 is flat, and it is located between the cylinder 62 and each solid-state battery to ensure that the pressure applied by the cylinder 62 can be evenly transmitted to the surface of the solid-state battery 11, thereby ensuring that each position of the solid-state battery 11 can be evenly stressed, avoiding the situation where the local pressure is too high or too low, improving the stability of the working performance of the solid-state battery module 10, and extending the service life of each solid-state battery, thereby improving the stability of the working performance of the solid-state battery system.

[0068] It is understood that the pressure control module 6 may include a pressure plate 63 (eg Figure 5 as shown), or Figure 6 As shown, the pressure control module 6 may include two pressure plates, namely pressure plate 631 and pressure plate 632, that is, the number of pressure plates in the pressure control module 6 is the same as the number of cylinders to ensure that the pressure applied by the cylinders can be evenly transmitted to the surface of the solid-state battery.

[0069] Optional, continue to refer to Figure 5 As shown, the solid-state battery module 10 also includes two end plates 7 and two insulators, namely insulator 801 and insulator 802; the cylinder 62, the pressure plate 63 and each solid-state battery are located between the two end plates 7; each solid-state battery is insulated from the pressure plate 63 and / or the end plate 7 by insulator 801 and insulator 802.

[0070] Specifically, the two end plates 7 are located on both sides of the solid-state battery module 10, and are used to fix and support the various structures in the solid-state battery module 10 (such as various solid-state batteries, cylinders, pressure plates, etc.). The two end plates 7 provide a structural support frame to ensure that the cylinder 62, pressure plate 63 and various solid-state batteries and other devices are in the correct position and maintain stability; at the same time, the two end plates can also serve as packaging protection for the solid-state battery module 10 to prevent the solid-state battery 11 from being hit or bumped by external objects, and to protect the internal devices of the solid-state battery module 10 from being affected by the external environment. The insulator 801 and the insulator 802 in the solid-state battery module 10 are used to achieve insulation isolation between each solid-state battery and the pressure plate 63 and / or the end plate 7, to prevent each solid-state battery from short circuiting or electrical failure, and to improve the safety and stability of the solid-state battery system.

[0071] It is understandable that if Figure 5 As shown, when the pressure control module 6 includes a cylinder 62 and a pressure plate 63, the cylinder 62 can adjust the pressure applied to each solid-state battery on one side of each solid-state battery. On the side where each solid-state battery contacts the pressure plate 63, at this time, the insulator 801 is located between each solid-state battery and the pressure plate 63, for achieving insulation isolation between each solid-state battery and the pressure plate 63; and on the other side of each solid-state battery, each solid-state battery contacts the end plate 7. At this time, the insulator 802 is located between each solid-state battery and the end plate 7, for achieving insulation isolation between each solid-state battery and the end plate 7.

[0072] It is also understandable that Figure 6 As shown, when the pressure control module 6 includes two cylinders, namely cylinder 621 and cylinder 622, and two pressure plates, namely pressure plate 631 and pressure plate 632, the two cylinders can be respectively located on both sides of each solid-state battery, and the pressure applied on both sides of each solid-state battery is adjusted to maintain the pressure inside the solid-state battery module 10 within a preset pressure range. Both sides of each solid-state battery are in contact with the pressure plate. At this time, the insulator 801 is located between each solid-state battery and the pressure plate 631, and the insulator 802 is located between each solid-state battery and the pressure plate 632, so as to achieve insulation isolation between each solid-state battery and the pressure plates on both sides.

[0073] Based on the above embodiment, the solid-state battery module 10 may further include two side plates. When the two end plates in the solid-state battery module 10 are placed longitudinally, the two side plates are placed in a horizontal direction perpendicular to the longitudinal direction. At this time, the two side plates and the two end plates 7 jointly provide a structural support frame, thereby ensuring that the cylinder 62, pressure plate 63 and various solid-state batteries and other devices between the two side plates and the two end plates 7 are in the correct position to maintain stability.

[0074] Optional, continue to refer to Figure 5As shown, the pressure regulating module 2 includes at least one pressure regulating valve 21 arranged in a one-to-one correspondence with at least one solid-state battery module 10; the gas outlet of the gas supply module 3 is connected to the gas inlet of the pressure control module 6 in at least one solid-state battery module 10 through at least one gas pipeline; the pressure regulating valves 21 are arranged in a one-to-one correspondence in the gas pipeline.

[0075] Specifically, the gas outlet of the gas supply module 3 is connected to the gas inlet of the pressure control module 6 in the solid-state battery module 10 through a gas pipeline, and the pressure regulating valve 21 of the pressure regulating module 2 is correspondingly arranged in the gas pipeline. By adjusting the opening and closing degree of the pressure regulating valve 21, the flow rate of the compressed gas output from the gas supply module 3 to the pressure control module 6 can be accurately controlled, so that the pressure control module 6 can accurately control the pressure inside the solid-state battery module 10, ensuring that the pressure between each solid-state battery is maintained within a preset pressure range, thereby improving the stability of the working performance of the solid-state battery module 10.

[0076] It is understandable that if Figure 7 As shown, when the solid-state battery system includes multiple solid-state battery modules, such as solid-state battery module 101, solid-state battery module 102 and solid-state battery module 103, the gas outlet of the gas supply module 3 will be connected to the gas inlet of the pressure control module 6 in the solid-state battery module 101, the solid-state battery module 102 and the solid-state battery module 103 through the first gas pipeline, the second gas pipeline and the third gas pipeline respectively. At the same time, the first pressure regulating valve 211, the second pressure regulating valve 212 and the third pressure regulating valve 213 of the pressure regulating module 2 are respectively arranged on the first gas pipeline, the second gas pipeline and the third gas pipeline. The gas supply module 3 is connected to the pressure control module 6 of the solid-state battery module 101 through the first gas pipeline, and the gas supply module 3 is connected to the pressure control module 6 of the solid-state battery module 102 through the second gas pipeline, and the gas supply module 3 is connected to the pressure control module 6 of the solid-state battery module 103 through the third gas pipeline. The gas supply module 3 is connected to the pressure control module 6 of the solid-state battery module 103 through the third gas pipeline. By respectively setting different pressure regulating valves and gas pipelines corresponding to different solid-state battery modules, it is possible to achieve personalized control of the compressed gas flow output to each solid-state battery module, so as to output different compressed gas flows to each solid-state battery module according to the specific needs of each solid-state battery module, ensure that each solid-state battery module obtains an appropriate amount of compressed gas, so that the pressure in each solid-state battery module is maintained within a preset pressure range, and effectively improve the flexibility and stability of the solid-state battery system.

[0077] Optional, continue to refer to Figure 5 As shown, the solid-state battery system also includes: a reminder module 9; the battery management module 4 is also connected to the reminder module 9; the battery management module 4 is also used to control the reminder module 9 to issue a warning reminder when it is determined that the pressure of the solid-state battery in the solid-state battery module 10 is within an abnormal pressure range based on the pressure information between the solid-state batteries sensed by the pressure sensing module 5.

[0078] Specifically, the battery management module 4 receives the pressure information between the solid-state batteries sensed by the pressure sensor 50 in the pressure sensing module 5. When the pressure information reflects that the pressure of the solid-state batteries in the current solid-state battery module 10 is within the normal pressure variation range, the battery management module 4 will control the pressure regulating module 2 to adjust the amount of gas provided by the gas supply module 3 to the pressure control module 6 as needed according to the pressure information detected by the pressure sensing module 5, so as to maintain the pressure inside the solid-state battery module 10 within the preset pressure range; when the pressure information reflects that the pressure of the solid-state batteries in the current solid-state battery module 10 is within the abnormal pressure range, the solid-state battery may have bulging or leakage at this time, and the battery module 4 will control the reminder module 9 electrically connected thereto to issue a warning reminder. Among them, the warning reminder information includes sound alarms, visual prompts, text prompts, and remote notifications.

[0079] Specifically, when it is determined that the pressure of the solid-state battery in the solid-state battery module 10 is within the abnormal pressure range, a sound alarm can be used to attract the driver's attention and indicate that the solid-state battery system of the vehicle has potential risks and should be driven carefully, such as a buzzer or alarm can issue a continuous or intermittent sound alarm; when it is determined that the pressure of the solid-state battery in the solid-state battery module 10 is within the abnormal pressure range, a visual indication can also be used to attract the driver's attention, such as a flashing warning light or LED indicator can flash or change color on the vehicle instrument; when it is determined that the pressure of the solid-state battery in the solid-state battery module 10 is within the abnormal pressure range, a text prompt can also be used to help the driver quickly identify the potential risks of the solid-state battery system of the vehicle, such as a text prompt that the solid-state battery of the vehicle is bulging or leaking through a display screen or a digital panel; when it is determined that the pressure of the solid-state battery in the solid-state battery module 10 is within the abnormal pressure range, the driver can also be notified remotely that the vehicle has potential risks, such as sending an email, text message or other remote notification through a system connected to the network. Timely alarms and vehicle risk displays can enhance the driver's awareness of the status of the solid-state battery system of the vehicle, help the driver better deal with potential risks, and ensure driving safety.

[0080] Optionally, the vehicle further includes a dashboard, and the reminder module 9 includes the dashboard.

[0081] Specifically, the battery management module 4 receives the pressure information between the solid-state batteries sensed by the pressure sensor 50 in the pressure sensing module 5. When the pressure information reflects that the pressure of the solid-state battery in the current solid-state battery module 10 is within the abnormal pressure change range, the solid-state battery may be bulging or leaking. The battery management module 4 can control the warning light or LED indicator on the dashboard of the vehicle to flash or change color to attract the driver's attention, helping the driver to quickly identify the potential risks of the vehicle's solid-state battery system and drive carefully. By reusing the existing dashboard in the vehicle as the reminder module 9, it is helpful to simplify the structure of the solid-state battery system, and at the same time it can reduce the manufacturing cost of the solid-state battery system and reduce resource waste.

[0082] Optionally, the battery management module 4 is also used to control the solid-state battery module to stop charging and discharging when it is determined that the pressure of the solid-state batteries in the solid-state battery module is within an abnormal pressure range based on the pressure information between the solid-state batteries sensed by the pressure sensing module 5.

[0083] Specifically, the battery management module 4 receives the pressure information between the solid-state batteries sensed by the pressure sensor 50 in the pressure sensing module 5. When the pressure information reflects that the pressure of the solid-state battery in the current solid-state battery module 10 is within the normal pressure variation range, the battery management module 4 will control the pressure regulating module 2 to adjust the amount of gas provided by the gas supply module 3 to the pressure control module 6 as needed according to the pressure information detected by the pressure sensing module 5, so as to maintain the pressure inside the solid-state battery module 10 within the preset pressure range; when the pressure information reflects that the pressure of the solid-state battery in the current solid-state battery module 10 is within the abnormal pressure range, the solid-state battery may have bulging or leakage at this time, and the battery module 4 will control the solid-state battery module to stop charging and discharging, so as to prevent the occurrence of accidents such as fire and explosion caused by continuing to charge and discharge under the condition of abnormal solid-state battery pressure, and at the same time, it can avoid the aggravation of abnormal problems of solid-state batteries and extend the service life of solid-state batteries. By stopping charging and discharging, time can be provided to diagnose the problems of solid-state batteries and take necessary maintenance measures, which helps to timely discover and solve the problems of solid-state batteries and ensure the stability and reliability of the solid-state battery system of the vehicle.

[0084] Based on the same inventive concept, an embodiment of the present invention also provides a vehicle, which at least includes the solid-state battery system of the vehicle of the above embodiment; the vehicle also includes a temperature regulation module, and the air compressor of the temperature regulation module is reused as a gas supply module for the solid-state battery system of the vehicle.

[0085] Therefore, the vehicle provided in this embodiment has the structure and operation of the solid-state battery system of the vehicle of the above embodiment, and can achieve the effect of the solid-state battery system of the vehicle of the above embodiment. The similarities can be referred to the above description and will not be repeated here.

[0086] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and this document does not limit this.

[0087] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A solid-state battery system for a vehicle, characterized in that: include: At least one solid-state battery module, a pressure regulating module, and a gas supply module; The solid-state battery module comprises a plurality of solid-state batteries, a battery management module, a pressure sensing module and a pressure control module which are sequentially arranged and electrically connected; the battery management module is electrically connected to each of the solid-state batteries, the pressure sensing module and the pressure control module respectively; The gas outlet of the gas supply module is connected to the gas inlet of the pressure control module through a gas pipeline; the pressure regulating module is arranged in the gas pipeline; the battery management module is also electrically connected to the pressure regulating module; The battery management module is used to obtain the status information of each of the solid-state batteries, and control the charge and discharge status of each of the solid-state batteries according to the status information of each of the solid-state batteries; The battery management module is further used to control the working states of the pressure regulating module and the pressure control module respectively according to the pressure information between the solid-state batteries sensed by the pressure sensing module, so that the pressure between the solid-state batteries is within a preset pressure range; The pressure regulating module is used to regulate the gas volume of the compressed gas provided by the gas supply module and transmitted to the pressure control module under the control of the battery management module; The vehicle at least includes a temperature regulating module; the temperature regulating module at least includes an air compressor, and the air compressor is reused as the gas supply module.

2. The solid-state battery system for a vehicle according to claim 1, characterized in that: The pressure sensing module includes at least one pressure sensor; at least a portion of the pressure sensor is disposed between two adjacent solid-state batteries.

3. The solid-state battery system for a vehicle according to claim 2, characterized in that: The solid-state battery module includes n solid-state batteries, and any two adjacent solid-state batteries are respectively the i-th solid-state battery and the i+1-th solid-state battery; n and i are both positive integers, and n is greater than or equal to 2, and i is less than or equal to n; When n is an odd number and the pressure sensing module includes a pressure sensor, the pressure sensor is located at the Solid-state batteries and Between solid-state batteries, or Solid-state batteries and between solid-state batteries; or, When n is an even number and the pressure sensing module includes one pressure sensor, the pressure sensor is located between the n / 2th solid-state battery and the n / 2+1th solid-state battery.

4. The solid-state battery system for a vehicle according to claim 1, characterized in that: The pressure control module includes at least one cylinder; the cylinder is arranged on one side of each of the solid-state batteries; The battery management module is specifically used to control the pressure applied by the cylinder to each of the solid-state batteries according to the pressure information between the solid-state batteries sensed by the pressure sensing module.

5. The solid-state battery system for a vehicle according to claim 4, characterized in that: The pressure control module further includes at least one pressure plate; the pressure plate is located between the cylinder and each of the solid-state batteries.

6. The solid-state battery system for a vehicle according to claim 5, characterized in that: The solid-state battery module also includes two end plates and two insulators; The cylinder, the pressure plate and each of the solid-state batteries are located between the two end plates; Each of the solid-state batteries is insulated from the pressure plate and / or the end plate by the insulator.

7. The solid-state battery system for a vehicle according to claim 1, characterized in that: The pressure regulating module includes at least one pressure regulating valve arranged in one-to-one correspondence with at least one of the solid-state battery modules; The gas outlet of the gas supply module is connected to the gas inlet of the pressure control module in at least one of the solid-state battery modules through at least one of the gas pipelines; The pressure regulating valves are arranged in the gas pipelines in a one-to-one correspondence.

8. The solid-state battery system for a vehicle according to claim 1, characterized in that: Also includes: Reminder module; The battery management module is also connected to the reminder module; the battery management module is also used to control the reminder module to issue a warning when it is determined that the pressure of the solid-state battery in the solid-state battery module is within an abnormal pressure range based on the pressure information between the solid-state batteries sensed by the pressure sensing module.

9. The solid-state battery system for a vehicle according to claim 8, characterized in that: The vehicle further comprises a dashboard; the reminder module comprises the dashboard.

10. The fixed battery system for a vehicle according to claim 1, characterized in that: The battery management module is also used to control the solid-state battery module to stop charging and discharging when it is determined that the pressure of the solid-state battery in the solid-state battery module is within an abnormal pressure range based on the pressure information between the solid-state batteries sensed by the pressure sensing module.

11. A vehicle, characterized in that: At least: A fixed battery system for a vehicle according to any one of claims 1 to 9; The vehicle also includes a temperature regulation module, and the air compressor of the temperature regulation module is reused as a gas supply module for the solid-state battery system of the vehicle.

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