A battery cold start device based on electromagnetic induction heating

Abstract

This application provides a battery cold start device based on electromagnetic induction heating. The device includes: a battery assembly with a metal layer on its outer side for uniformly heating the battery assembly through heat conduction; and an electromagnetic heating assembly connected to the battery assembly for heating the metal layer on the outer side of the battery assembly. This application, by setting a metal layer on the outer side of the battery assembly, with the metal layer distributed in a ring around the battery assembly, allows the electromagnetic heating assembly to be energized when the battery assembly requires a low-temperature cold start. By heating the metal layer and then heating the internal battery assembly through heat conduction, the battery assembly can be heated more evenly, resulting in better heating performance and enabling the battery assembly to start normally in low-temperature environments.

Description

Technical Field

[0001] This application belongs to the field of battery technology, and in particular relates to a battery cold start device based on electromagnetic induction heating. Background Technology

[0002] With the innovation and industrial upgrading of new energy technologies, secondary batteries such as lithium-ion batteries have been widely used in key areas such as electric vehicle power systems, grid-scale energy storage devices, and smart terminal equipment due to their high energy density, long cycle life, and environmentally friendly characteristics. However, under extreme low-temperature conditions such as -20℃ to -40℃, battery systems face significant electrochemical kinetic performance degradation: increased electrolyte viscosity leads to increased ion migration resistance, enhanced impedance of the graphite anode solid electrolyte interphase (SEI) film, and intensified lithium metal deposition side reactions, among other limiting factors. These factors result in battery effective capacity retention rates of less than 50%, power output capacity reductions of over 70%, and even failure to start normally, seriously threatening the reliability and lifespan of equipment. This technical bottleneck is particularly prominent in winter operating scenarios in high-latitude cold regions. Statistics show that the winter driving range of electric vehicles in northern my country is generally reduced by 30%-50%, and the low-temperature start-up failure rate of energy storage power stations is as high as 22.3%.

[0003] To overcome the aforementioned technical difficulties, those skilled in the art have attempted to introduce electromagnetic induction heating technology as an active thermal management solution. This technology is based on Faraday's law of electromagnetic induction, which uses an alternating magnetic field to excite eddy currents in conductive materials to generate Joule heat, and has advantages such as non-contact heating and fast heating rate (up to 100℃ / s). The traditional solution proposes to form an alternating magnetic field on the battery surface by using an excitation coil with a wound magnetic core, so that the aluminum shell generates eddy currents to achieve rapid heating. However, such technical solutions still have significant drawbacks: (1) the skin effect limits the heating depth, and the internal temperature gradient of the battery cell can reach 8-15℃ / mm, which may lead to the risk of thermal stress cracking of the electrode material; (2) local overheating of metal parts may trigger electrolyte decomposition side reactions, increasing the probability of thermal runaway by about 3.8 times; (3) the eddy current distribution becomes unstable under the coupling of multiple physical fields, causing the temperature standard deviation between battery modules to exceed ±5℃, which deteriorates the consistency and accelerates capacity decay. In addition, the traditional solution requires additional magnetic shielding layer and heat dissipation system, which reduces the volumetric energy density of the battery pack by 12%-18%, which violates the trend of lightweight design of new energy equipment. Summary of the Invention

[0004] This application provides a battery cold start device based on electromagnetic induction heating to solve the problem of difficult battery cold start in low-temperature environments.

[0005] In a first aspect, this application provides a battery cold start device based on electromagnetic induction heating. The device includes: a battery assembly with a metal layer on its outer side for uniformly heating the battery assembly through heat conduction; and an electromagnetic heating assembly connected to the battery assembly for heating the metal layer on the outer side of the battery assembly.

[0006] In one implementation of the first aspect, the metal layer is in the form of an annular pipe, annularly wrapping the battery assembly.

[0007] In one implementation of the first aspect, the device further includes a magnetic shielding layer, which is circumferentially distributed on the outside of the battery assembly.

[0008] In one implementation of the first aspect, the magnetic shielding layer is distributed in a ring around the outside of the battery assembly; the metal layer is distributed in a ring around the outside of the magnetic shielding layer and is closely connected to the magnetic shielding layer.

[0009] In one implementation of the first aspect, the electromagnetic heating assembly includes an electromagnetic heating source device, an electromagnetic heating device, and a sensor; the electromagnetic heating source device is connected to the electromagnetic heating device and the sensor respectively to provide a heat source; the electromagnetic heating device is disposed outside the metal layer to heat the metal layer; the sensor is connected to the battery assembly to detect the real-time temperature of the battery assembly and the pressure inside the pipes of the battery assembly.

[0010] In one implementation of the first aspect, the electromagnetic heating device is an induction heating coil, which is a ring-shaped pipe; one side of the induction heating coil is connected to the electromagnetic heating source device, and the other side is tightly connected to the metal layer.

[0011] In one implementation of the first aspect, the electromagnetic heating source device is a heating power source; the heating power source is located on one side of the battery assembly.

[0012] In one implementation of the first aspect, the battery assembly includes a plurality of batteries connected in sequence.

[0013] In one implementation of the first aspect, the device further includes a cooling assembly disposed at the bottom of the battery assembly; the cooling assembly contains cooling water.

[0014] In one implementation of the first aspect, the cooling assembly has a cooling water inlet on one side and a cooling water outlet on the other side.

[0015] As described above, the battery cold start device based on electromagnetic induction heating described in this application has the following beneficial effects:

[0016] This application provides a battery cold start device based on electromagnetic induction heating. The device includes a battery assembly and an electromagnetic heating assembly. The battery assembly has a metal layer on its outer side for uniformly heating the battery assembly through heat conduction. The electromagnetic heating assembly is connected to the battery assembly and is used to heat the metal layer on the outer side of the battery assembly. This application provides a metal layer on the outer side of the battery assembly, with the metal layer arranged in a ring around the battery assembly. When the battery assembly needs a low-temperature cold start, the electromagnetic heating assembly is energized, heating the metal layer and then heating the internal battery assembly through heat conduction. This results in more uniform heating of the battery assembly and better heating effect, enabling the battery assembly to start normally in low-temperature environments.

[0017] The battery cold start device based on electromagnetic induction heating in this application is a small-scale structure for cold starting batteries at low temperatures, which can be used on a large scale according to actual needs. Furthermore, the battery cold start device based on electromagnetic induction heating in this application has a simple structure, reducing the complexity of the manufacturing process and lowering manufacturing costs. In addition, the battery pack is easy to remove and add batteries; subsequent adjustments to the battery pack length are sufficient to increase the battery pack's capacity.

[0018] To ensure safety and avoid direct induction heating of the battery assembly, this application employs a magnetic shielding layer on the outside of the battery assembly. The magnetic shielding layer is circumferentially distributed around the outside of the battery assembly, and a metal layer is circumferentially distributed around the outside of the magnetic shielding layer and tightly connected to it. This effectively controls the speed and range of induction heating. Utilizing the principle of electromagnetic induction for rapid heating while ensuring battery safety and stability provides a reliable solution for rapid start-up of battery assemblies in low-temperature environments. Compared to traditional battery cold-start devices based on electromagnetic induction heating, the battery cold-start device provided in this application offers faster and more uniform heating, while also having a simpler structure that allows for flexible deployment in industrial systems.

[0019] This application provides a cooling component on the outside of the battery assembly and places cooling water in the cooling component to absorb the heat from the induction heating coil, ensuring that the battery cold start device based on electromagnetic induction heating is within the normal temperature range; at the same time, the cooling water medium only needs to be water, and the water temperature requirement is not high, and constant temperature water heated by industrial waste heat can be used, resulting in low operating costs. Attached Figure Description

[0020] Figure 1 The diagram shown is a structural schematic of the battery cold start device based on electromagnetic induction heating described in the embodiments of this application.

[0021] Figure 2 The diagram shown is a schematic representation of the external structure of the battery assembly described in this application embodiment.

[0022] Figure 3 The diagram shown is a structural schematic of the battery assembly described in an embodiment of this application.

[0023] Figure 4 The diagram shown is a structural schematic of a battery cold start device based on electromagnetic induction heating according to another embodiment of this application.

[0024] Figure 5 The diagram shown is a structural schematic of a battery cold start device based on electromagnetic induction heating according to another embodiment of this application.

[0025] Component designation explanation

[0026] 100 Battery cold start device based on electromagnetic induction heating

[0027] 101 Battery Components

[0028] 1011 Battery

[0029] 102 Electromagnetic heating assembly

[0030] 1021 Electromagnetic heating source device

[0031] 1022 Electromagnetic heating device

[0032] 1023 sensor

[0033] 103 Metal Layer

[0034] 104 Magnetic Shielding Layer

[0035] 105 Cooling Components

[0036] 1051 Cooling water inlet

[0037] 1052 Cooling water outlet Detailed Implementation

[0038] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0039] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0040] The following embodiments of this application provide a battery cold start device based on electromagnetic induction heating, which solves the problem of difficult battery cold start in low temperature environments.

[0041] Traditional battery induction heating technology generates heat by inducing eddy currents in conductive materials using an alternating magnetic field. However, directly induction heating the battery can lead to uneven internal temperature distribution and even safety hazards. Therefore, this application proposes a low-temperature battery cold-start device based on electromagnetic induction heating that can effectively control the heating process and avoid direct heating of the battery. The proposed electromagnetic induction heating-based battery cold-start device wraps a metal layer around the battery pack and uses induction heating to heat the inner metal layer, thereby uniformly heating the central battery pack through heat conduction. To ensure safety and avoid direct induction heating of the battery, a magnetic shielding layer is wrapped around the battery pack, utilizing the principle of electromagnetic induction for rapid temperature rise while ensuring battery safety and stability. This provides a reliable solution for rapid battery startup in low-temperature environments. Compared to traditional electromagnetic induction heating-based battery cold-start devices, the electromagnetic induction heating-based battery cold-start device provided in this application has a faster and more uniform heating speed, and its simpler structure allows for flexible deployment in industrial systems.

[0042] It should be noted that the battery cold start device based on electromagnetic induction heating described in the following embodiments of this application is suitable for starting equipment in industrial low-temperature environments.

[0043] The following will describe in detail the principle and implementation of a battery cold start device based on electromagnetic induction heating according to this embodiment, with reference to the accompanying drawings, so that those skilled in the art can understand the battery cold start device based on electromagnetic induction heating according to this embodiment without creative effort.

[0044] like Figure 1 As shown, this embodiment provides a battery cold start device based on electromagnetic induction heating. The device 100 includes a battery assembly 101 and an electromagnetic heating assembly 102.

[0045] The battery assembly 101 has a metal layer 103 on its outer side for uniformly heating the battery assembly 101 through heat conduction.

[0046] The electromagnetic heating component 102 is connected to the battery component 101 and is used to heat the metal layer 103 on the outside of the battery component 101.

[0047] In one embodiment, this application provides a metal layer 103 on the outside of the battery assembly. The metal layer is distributed in a ring around the battery assembly. When the battery assembly needs to be started at a low temperature, the electromagnetic heating component is energized to heat the metal layer and then heat the internal battery assembly through heat conduction. This makes the battery assembly heated more evenly and the heating effect of the battery assembly better.

[0048] The battery cold start device based on electromagnetic induction heating in this application is a small-scale structure for cold starting batteries at low temperatures, which can be used on a large scale according to actual needs. The battery cold start device based on electromagnetic induction heating in this application has a simple structure, which reduces the complexity of the manufacturing process and reduces manufacturing costs.

[0049] In one embodiment of this application, the metal layer 103 is in the shape of an annular pipe, and annularly wraps around the battery assembly 101.

[0050] In one implementation, the metal layer 103 is in the shape of an annular pipe, which encloses the battery assembly 101. Thus, when the metal layer 103 is heated, the battery assembly 101 inside is heated through heat conduction, which makes the battery assembly 101 heat up more evenly and improves the heating effect of the battery assembly 101.

[0051] In one embodiment, the metal layer 103 of this application is made of high melting point metal, which is safe and stable when the metal layer 103 is heated.

[0052] High-melting-point metals are elements with melting points significantly higher than common metals (e.g., iron at 1538℃). These metals are widely used in aerospace, electronics, and energy industries due to their high-temperature resistance and corrosion resistance. Examples of high-melting-point metals include, but are not limited to, tungsten (W), rhenium (Re), osmium (Os), tantalum (Ta), molybdenum (Mo), niobium (Nb), iridium (Ir), ruthenium (Ru), hafnium (Hf), and technetium (Tc).

[0053] Tungsten (W) has a melting point of 3422℃ (the highest of all metals) and possesses the following properties: a silvery-white metallic color, and a high density (19.35 g / cm³). 3 It has high hardness, corrosion resistance, and good electrical conductivity. It is mainly used in fields such as lamp filaments, high-temperature alloys, electronic components, and cemented carbide.

[0054] Rhenium (Re) has a melting point of 3180℃ and possesses the following characteristics: it is a rare metal, with extremely low abundance in the Earth's crust (approximately one part per billion), and is very expensive. It is mainly used in high-efficiency jet engine blades, ultra-high-temperature components for rocket engines, and petrochemical catalysts.

[0055] Osmium (Os) has a melting point of 3045℃ and possesses the following characteristics: it has the highest density (22.48 g / cm³). 3 It is extremely difficult to mine from the Earth's crust and often occurs in association with iridium. It is mainly used in ultra-high hardness alloys, catalysts, and electrical contact materials.

[0056] Tantalum (Ta) has a melting point of 2980℃ and possesses the following characteristics: strong chemical stability, excellent corrosion resistance, and outstanding cold working properties. It is mainly used in tantalum capacitors, high-temperature alloys, and medical implant devices.

[0057] Molybdenum (Mo) has a melting point of 2610℃ and possesses the following properties: a silvery-white metal, high strength, and resistance to high-temperature oxidation. It is mainly used in the steel industry (accounting for 80% of consumption), electronic devices, and chemical catalysts.

[0058] Niobium (Nb) has a melting point of 2477℃ and possesses the following properties: a silvery-gray metallic color, good ductility, and strong superconductivity. It is mainly used in superconducting materials, aerospace alloys, and medical devices.

[0059] Iridium (Ir) has a melting point of 2450℃ and possesses the following properties: it is the most corrosion-resistant metal, insoluble in acids, and has a high density (22.56 g / cm³). 3 It is mainly used in industrial catalytic electrodes, high-performance spark plugs, medical electrotherapy equipment and other fields.

[0060] Ruthenium (Ru) has a melting point of 2310℃ and possesses the following characteristics: it is a platinum group metal, exhibits good stability, and is less expensive than rhodium but has similar performance. It is mainly used in electrical contacts, electrodes, and bearings for precision instruments.

[0061] Hafnium (Hf) has a melting point of 2233℃ and possesses the following properties: high temperature resistance, oxidation resistance, and it often coexists with zirconium. Its main applications include nuclear reactor control rods and coatings for supersonic aircraft.

[0062] Technetium (Tc) has a melting point of 2157℃ and possesses the following characteristics: it is a synthetic element, radioactive, and chemically reactive. Its main applications include metallurgical tracers, nuclear fuel research, and medical radiation sources.

[0063] like Figure 2 As shown, in one embodiment of this application, the device further includes a magnetic shielding layer 104, which is distributed in a ring around the outside of the battery assembly 101.

[0064] In one embodiment of this application, the magnetic shielding layer 104 is distributed in a ring around the outside of the battery assembly 101; the metal layer 103 is distributed in a ring around the outside of the magnetic shielding layer 104 and is closely connected to the magnetic shielding layer 104.

[0065] In some implementations, to ensure safety and avoid direct induction heating of the battery assembly 101, this application provides a magnetic shielding layer 104 on the outside of the battery assembly 101. The magnetic shielding layer 104 is circumferentially distributed on the outside of the battery assembly 101, and the metal layer 103 is circumferentially distributed on the outside of the magnetic shielding layer 104 and tightly connected to the magnetic shielding layer 104, thereby effectively controlling the speed and range of induction heating. Utilizing the principle of electromagnetic induction for rapid temperature rise while ensuring battery safety and stability provides a reliable solution for rapid start-up of the battery assembly 101 in low-temperature environments.

[0066] It should be noted that the magnetic shielding layer 104 is a protective layer designed with specific materials or structures to weaken or block the influence of external magnetic fields on the internal region. For example, the constituent materials of the magnetic shielding layer include, but are not limited to, soft magnetic materials, highly conductive materials, special alloys and composite materials, hard magnetic materials, and superconducting materials. Soft magnetic materials include, but are not limited to, permalloy (e.g., nickel-iron alloy), silicon steel sheets (containing 3%-5% silicon), and microcrystalline alloys (e.g., amorphous metals). Highly conductive materials include, but are not limited to, copper and copper alloys, and aluminum. Special alloys and composite materials include, but are not limited to, ferrite materials (e.g., nickel-zinc ferrite, aluminum-silicon ferrite), nanocrystalline alloys (e.g., GW-SEM-0120), and composite materials: a mixture of metal powder and plastic. Hard magnetic materials and superconducting materials include, but are not limited to, hard magnetic materials (e.g., neodymium iron boron) and superconducting materials (e.g., superconductors).

[0067] In one embodiment of this application, the electromagnetic heating assembly 102 includes an electromagnetic heating source device 1021, an electromagnetic heating device 1022, and a sensor 1023; the electromagnetic heating source device 1021 is connected to the electromagnetic heating device 1022 and the sensor 1023 respectively to provide a heat source; the electromagnetic heating device 1022 is disposed on the outside of the metal layer 103 to heat the metal layer 103; the sensor 1023 is connected to the battery assembly 101 to detect the real-time temperature of the battery assembly 101 and the pressure inside the pipes of the battery assembly 101.

[0068] In some implementations, the electromagnetic heating source device 1021 may be an induction heating power supply, and the electromagnetic heating device 1022 may be an induction heating coil.

[0069] In some implementations, the electromagnetic heating assembly 102 includes an electromagnetic heating source device 1021 (e.g., an induction heating power supply), an electromagnetic heating device 1022 (e.g., an induction heating coil), and a sensor 1023. The electromagnetic heating source device 1021 is disposed outside the battery assembly 101; the electromagnetic heating device 1022 is disposed outside the metal layer 103; the sensor 1023 is connected to the battery assembly 101 and disposed within a channel of the battery assembly 101; the electromagnetic heating source device 1021 is connected to the electromagnetic heating device 1022 and the sensor 1023 respectively. Connected to 023, the electromagnetic heating source device 1021 is an induction heating power supply used to provide a heat source for the battery assembly 101; the electromagnetic heating device 1022 is used to heat the metal layer 103 to uniformly heat the battery assembly 101 through heat conduction; the sensor 1023 is used to monitor the real-time temperature and pressure in the battery assembly channel and feed the signal back to the electromagnetic heating source device 1021. When the temperature and pressure exceed the set value, the battery cold start device based on electromagnetic induction heating can adjust the power of the electromagnetic heating source device 1021 in a timely manner.

[0070] In this implementation, when the battery assembly 101 requires low-temperature startup, the induction heating power supply is energized, heating the metal layer 103, and then heating the internal battery assembly 101 through heat conduction. Simultaneously, the sensor 1023 within the battery assembly 101 channel monitors the real-time temperature and pressure within the channel. When the real-time temperature and pressure exceed set values, the power of the induction heating power supply can be adjusted promptly. When the real-time temperature reaches the normal operating temperature of the battery, the sensor 1023 sends a signal back to the induction heating power supply, which then disconnects. Furthermore, to ensure safety and avoid direct induction heating of the battery assembly, this application tightly wraps a magnetic shielding layer 104 around the outside of the battery assembly 101, thereby effectively controlling the speed and range of induction heating.

[0071] This application integrates the electromagnetic heating component with the battery component, which greatly saves the space of the device. Compared with the traditional battery cold start device based on electromagnetic induction heating, the battery cold start device based on electromagnetic induction heating in this application has a faster and more uniform heating speed, and its structure is relatively simple, which can be flexibly arranged in industrial systems.

[0072] In one embodiment of this application, the electromagnetic heating device 1022 is an induction heating coil, which is in the form of an annular pipe; one side of the induction heating coil is connected to the electromagnetic heating source device 1021, and the other side is tightly connected to the metal layer 103.

[0073] In one embodiment of this application, the electromagnetic heating source device 1021 is a heating power source, such as an induction heating power source; the heating power source is located on one side of the battery assembly 101.

[0074] like Figure 3 As shown, in one embodiment of this application, the battery assembly 101 includes a plurality of batteries 1011 connected in sequence.

[0075] In some implementations, the battery assembly 101 includes a plurality of batteries 1011 connected in sequence, so as to Figure 1 Taking four 1011 batteries as an example, these four batteries are connected in sequence to form a battery pack. The outer side of this battery pack is provided with a magnetic shielding layer, a metal layer, and an induction heating coil in sequence. The magnetic shielding layer is distributed in a ring on the outside of the battery pack and is connected to the battery pack. The metal layer is distributed in a ring on the outside of the magnetic shielding layer and is connected to the magnetic shielding layer. The induction heating coil is distributed in a ring on the outside of the metal layer and is connected to the metal layer. The battery pack, the magnetic shielding layer, the metal layer, and the induction heating coil form a battery compartment.

[0076] In this implementation, by integrating the electromagnetic heating component into the battery compartment, the space required for the device is significantly reduced. Furthermore, induction heating is used to heat the internal metal layer, thereby uniformly heating the central battery pack through heat conduction. To ensure safety and avoid direct induction heating of the battery, a magnetic shielding layer is tightly wrapped around the battery pack, effectively controlling the speed and range of induction heating. Sensors are placed within the battery channel to detect the real-time temperature of the battery pack and the pressure within the pipes. When the temperature and pressure exceed set values, the power of the induction heating power supply can be adjusted promptly. Once the battery start-up temperature is reached, the sensor returns a signal to immediately cut off the power. Compared to traditional battery cold-start devices based on electromagnetic induction heating, the battery cold-start device provided in this embodiment offers faster and more uniform heating, while maintaining a simpler structure for flexible deployment in industrial systems.

[0077] The battery channel in the battery compartment of this application allows for easy removal and addition of batteries. The battery compartment capacity can be increased by simply adjusting the length of the battery compartment. This is convenient, quick, and has a simple structure, which reduces the complexity of the manufacturing process and reduces manufacturing costs.

[0078] like Figure 4-5 As shown, in one embodiment of this application, the device 100 further includes a cooling component 105 disposed at the bottom of the battery component 101; the cooling component 105 is provided with cooling water.

[0079] In one embodiment of this application, the cooling assembly 105 has a cooling water inlet 1051 on one side and a cooling water outlet 1052 on the other side.

[0080] In some implementations, the cooling component 105 is located at the bottom of the battery assembly 101, and the cooling component 105 contains cooling water to absorb the heat of the coil and ensure that the device is within the normal temperature range.

[0081] like Figure 5 As shown, in this implementation, the cooling component 105 has a cooling water inlet 1051 on the left side and a cooling water outlet 1052 on the right side.

[0082] Or, such as Figure 5 As shown, in this implementation, the cooling assembly 105 has a cooling water inlet 1051 on its right side and a cooling water outlet 1052 on its left side. (See attached image) Figure 4-5 Only two arrangements of the cooling water inlet and outlet of the cooling component 105 at the bottom of the battery assembly 101 are shown. This application is not limited to these two arrangements. For example, the cooling component 105 can also be located at the top of the battery assembly 101. Other arrangements are similar to the bottom arrangements, and corresponding illustrations are not provided here. Please refer to [the relevant documentation]. Figure 4-5 This application does not limit itself to other configuration methods.

[0083] In some implementations, the cooling component 105 is located on top of the battery assembly 101, and the cooling component 105 contains cooling water to absorb the heat of the coil and ensure that the device is within the normal temperature range.

[0084] In this implementation, the cooling component 105 has a cooling water inlet 1051 on the left side and a cooling water outlet 1052 on the right side.

[0085] Alternatively, in this implementation, the cooling component 105 has a cooling water inlet 1051 on the right side and a cooling water outlet 1052 on the left side.

[0086] In some implementations, a cooling assembly 105 is provided at the top and bottom of the battery assembly 101, and the cooling assembly 105 is provided with cooling water to absorb the heat of the coil and ensure that the device is within the normal temperature range.

[0087] In this implementation, each of the cooling components 105 has a cooling water inlet 1051 on its left side and a cooling water outlet 1052 on its right side.

[0088] Alternatively, in this implementation, each of the cooling components 105 has a cooling water inlet 1051 on its right side and a cooling water outlet 1052 on its left side.

[0089] In some implementations, the cooling component 105 is disposed around the outer edge of the battery assembly 101, and the cooling component 105 is provided with cooling water to absorb the heat of the coil and ensure that the device is within the normal temperature range.

[0090] In this implementation, a cooling water inlet 1051 is provided on the left side of the cooling component 105 at the top of the battery assembly 101, and a cooling water outlet 1052 is provided on the left side of the cooling component 105 at the bottom of the battery assembly 101.

[0091] Alternatively, in this implementation, a cooling water inlet 1051 is provided on the left side of the cooling component 105 at the bottom of the battery assembly 101, and a cooling water outlet 1052 is provided on the left side of the cooling component 105 at the top of the battery assembly 101.

[0092] It should be noted that the positions, structures, and quantities of the cooling components 105 and the cooling water inlets and outlets of the cooling components 105 in this application are not limited to the settings in the above embodiments of this application. The function of the cooling components 105 is to hold cooling water, and the function of the cooling water is to absorb the heat from the induction heating coil, ensuring that the battery cold start device based on electromagnetic induction heating is within the normal temperature range. Any cooling component 105 capable of absorbing the heat from the induction heating coil and ensuring that the battery cold start device based on electromagnetic induction heating is within the normal temperature range is applicable to the battery cold start device based on electromagnetic induction heating in this application.

[0093] Cooling water is water used to absorb, transfer, or dissipate heat. It is commonly used as a cooling medium in industrial, mechanical, building, or electronic equipment applications to help maintain the temperature stability of systems or equipment. Cooling water is a medium that removes heat from high-temperature areas (e.g., machines, reactors, electronic equipment) through circulation or flow, preventing overheating. It utilizes water's high specific heat capacity (1 cal / g·℃) to efficiently absorb heat and then release it into the environment through heat dissipation devices (e.g., cooling towers, radiators, heat exchangers). Cooling water includes, but is not limited to, ordinary water, softened water, and purified water.

[0094] Ordinary water includes, but is not limited to, tap water, well water, river water, etc., and can be used directly in simple cooling systems (such as small air conditioners and traditional engines).

[0095] Softened water refers to water that has been treated by ion exchange or reverse osmosis to remove calcium and magnesium ions and reduce scale formation. It is commonly used in industrial circulating cooling systems.

[0096] Pure water refers to water that has been treated through processes such as distillation and deionization, and is used in high-precision equipment (such as semiconductor manufacturing and medical instrument cooling).

[0097] The cooling water medium in this application only requires water, and the water temperature requirement is not high. It can be constant temperature water heated by industrial waste heat, resulting in low operating costs.

[0098] In some implementations, when the battery assembly 101 requires low-temperature start-up, the induction heating power supply is energized, heating the metal layer 103, and then heating the internal battery assembly 101 through heat conduction. Simultaneously, a sensor 1023 within the battery assembly 101 channel monitors the real-time temperature and pressure within the channel. If the real-time temperature or pressure exceeds a set value, the power of the induction heating power supply can be adjusted promptly. When the real-time temperature reaches the normal operating temperature of the battery, the sensor 1023 sends a signal back to the induction heating power supply, which then disconnects. Furthermore, to ensure safety and avoid direct induction heating of the battery assembly, this application tightly wraps a magnetic shielding layer 104 around the battery assembly 101, effectively controlling the speed and range of induction heating. Additionally, this application provides a cooling component between the bottom of the battery compartment and the induction heating coil, containing cooling water to absorb the heat from the induction heating coil, ensuring that the battery cold-start device based on electromagnetic induction heating remains within its normal temperature range.

[0099] In summary, the battery cold start device based on electromagnetic induction heating described in this application has the following beneficial effects:

[0100] This application provides a battery cold start device based on electromagnetic induction heating. The device includes a battery assembly and an electromagnetic heating assembly. The battery assembly has a metal layer on its outer side for uniformly heating the battery assembly through heat conduction. The electromagnetic heating assembly is connected to the battery assembly and is used to heat the metal layer on the outer side of the battery assembly. This application provides a metal layer on the outer side of the battery assembly, with the metal layer arranged in a ring around the battery assembly. When the battery assembly needs a low-temperature cold start, the electromagnetic heating assembly is energized, heating the metal layer and then heating the internal battery assembly through heat conduction. This results in more uniform heating of the battery assembly and better heating effect, enabling the battery assembly to start normally in low-temperature environments.

[0101] The battery cold start device based on electromagnetic induction heating in this application is a small-scale structure for cold starting batteries at low temperatures, which can be used on a large scale according to actual needs. Furthermore, the battery cold start device based on electromagnetic induction heating in this application has a simple structure, reducing the complexity of the manufacturing process and lowering manufacturing costs. In addition, the battery pack is easy to remove and add batteries; subsequent adjustments to the battery pack length are sufficient to increase the battery pack's capacity.

[0102] To ensure safety and avoid direct induction heating of the battery assembly, this application employs a magnetic shielding layer on the outside of the battery assembly. The magnetic shielding layer is circumferentially distributed around the outside of the battery assembly, and a metal layer is circumferentially distributed around the outside of the magnetic shielding layer and tightly connected to it. This effectively controls the speed and range of induction heating. Utilizing the principle of electromagnetic induction for rapid heating while ensuring battery safety and stability provides a reliable solution for rapid start-up of battery assemblies in low-temperature environments. Compared to traditional battery cold-start devices based on electromagnetic induction heating, the battery cold-start device provided in this application offers faster and more uniform heating, while also having a simpler structure that allows for flexible deployment in industrial systems.

[0103] This application provides a cooling component on the outside of the battery assembly and places cooling water in the cooling component to absorb the heat from the induction heating coil, ensuring that the battery cold start device based on electromagnetic induction heating is within the normal temperature range; at the same time, the cooling water medium only needs to be water, and the water temperature requirement is not high, and constant temperature water heated by industrial waste heat can be used, resulting in low operating costs.

[0104] The descriptions of the processes or structures corresponding to the above figures each have their own emphasis. For parts of a process or structure that are not described in detail, please refer to the relevant descriptions of other processes or structures.

[0105] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A battery cold start device based on electromagnetic induction heating, characterized in that, The device includes: The battery assembly has a metal layer on its outer side for uniformly heating the battery assembly through heat conduction; the metal layer is in the shape of an annular pipe and wraps around the battery assembly. An electromagnetic heating component, connected to the battery assembly, is used to heat the metal layer on the outside of the battery assembly.

2. The battery cold start device based on electromagnetic induction heating according to claim 1, characterized in that, The device also includes a magnetic shielding layer, which is distributed in a ring around the outside of the battery assembly.

3. The battery cold start device based on electromagnetic induction heating according to claim 2, characterized in that, The magnetic shielding layer is distributed in a ring around the outside of the battery assembly; the metal layer is distributed in a ring around the outside of the magnetic shielding layer and is closely connected to the magnetic shielding layer.

4. The electromagnetic induction heating based battery cold start device of claim 1, wherein, The electromagnetic heating assembly includes an electromagnetic heating source device, an electromagnetic heating device, and a sensor; the electromagnetic heating source device is connected to the electromagnetic heating device and the sensor respectively to provide a heat source; the electromagnetic heating device is disposed on the outside of the metal layer to heat the metal layer; the sensor is connected to the battery assembly to detect the real-time temperature of the battery assembly and the pressure inside the pipes of the battery assembly.

5. The battery cold start device based on electromagnetic induction heating according to claim 4, characterized in that, The electromagnetic heating device is an induction heating coil, which is in the form of a ring-shaped pipe; one side of the induction heating coil is connected to the electromagnetic heating source device, and the other side is tightly connected to the metal layer.

6. The electromagnetic induction heating based battery cold start device of claim 4, wherein, The electromagnetic heating source device is a heating power supply; the heating power supply is located on one side of the battery assembly.

7. The electromagnetic induction heating based battery cold start device of claim 1, wherein, The battery assembly comprises several batteries connected in sequence.

8. The electromagnetic induction heating based battery cold start device of claim 1, wherein, The device also includes a cooling assembly located at the bottom of the battery assembly; the cooling assembly contains cooling water.

9. The electromagnetic induction heating based battery cold start device of claim 8, wherein, The cooling assembly has a cooling water inlet on one side and a cooling water outlet on the other side.

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