Thermoelectric device, battery pack system and electric equipment

Abstract

The invention relates to the technical field of batteries, and provides a thermoelectric device, a battery pack system and electric equipment, the thermoelectric device at least comprises a first temperature assembly, a second temperature assembly and a thermoelectric conversion device, and the first temperature assembly is suitable for being arranged in a battery pack. The second temperature assembly is suitable for being arranged outside the battery pack. The thermoelectric conversion device is electrically connected with the first temperature assembly and the second temperature assembly. The thermoelectric conversion device is used for converting the temperature difference between the first temperature assembly and the second temperature assembly into voltage difference so as to supply power to the battery pack. In the embodiment of the invention, when the electric quantity of the battery is lower than the set value, the battery can be charged by utilizing the temperature difference between the electric equipment and the interior of the battery pack, or the internal load of the electric equipment is supplied with power, so that the charging anxiety and mileage anxiety of a user can be reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a thermoelectric device, a battery pack system, and electrical equipment. Background Art

[0002] Power batteries are the core components of electrical equipment, and the performance of power batteries will directly affect the performance of electrical equipment.

[0003] Related technologies typically improve charging issues for electrical devices by increasing battery pack energy or improving charging speed. However, due to the space constraints inherent in the device itself, the battery pack cannot be made too large. Furthermore, increasing the mass of the battery pack also increases the power consumption of the device, making it difficult to infinitely increase the battery's range while maintaining space efficiency. Summary of the Invention

[0004] The present application provides a thermoelectric device, a battery pack system and electrical equipment, which can effectively increase the battery life while taking into account comfort, thereby reducing the user's charging anxiety and mileage anxiety.

[0005] A first aspect of the present application provides a thermoelectric device, comprising at least:

[0006] a first temperature component, wherein the first temperature component is adapted to be disposed on the battery pack;

[0007] a second temperature component, the second temperature component being adapted to be disposed outside the battery pack;

[0008] and a thermoelectric conversion device electrically connected to the first temperature component and the second temperature component, respectively;

[0009] The thermoelectric conversion device is used to convert the temperature difference between the first temperature component and the second temperature component into a voltage difference to supply power to the battery pack.

[0010] In the embodiment of the present application, a thermoelectric device is designed to include a first temperature component, a second temperature component, and a thermoelectric conversion device. The thermoelectric conversion device is electrically connected to the first temperature component and the second temperature component, respectively. The first temperature component is disposed in the battery pack to obtain the temperature of the battery pack, and the second temperature component is disposed outside the battery pack to obtain the temperature outside the battery pack. The thermoelectric conversion device is used to convert the temperature difference between the battery pack and the outside of the battery pack into a voltage difference to power the battery pack. In this way, when the battery power is less than the set value, the temperature difference between the electrical device and the inside of the battery pack can be used to charge the battery or power the internal load of the electrical device, thereby reducing the user's charging anxiety and range anxiety.

[0011] In one possible implementation, there are multiple first temperature components; the multiple first temperature components are arranged at different positions of the battery pack.

[0012] In one possible implementation, the first temperature component includes: a first temperature collector; the first temperature collector is electrically connected to the thermoelectric conversion device.

[0013] In a possible implementation, the first temperature component further includes: a first temperature sensor; the first temperature sensor is electrically connected to the first temperature collector;

[0014] The first temperature sensor is electrically connected to the thermoelectric conversion device.

[0015] In one possible implementation, the first temperature component is disposed inside the battery pack.

[0016] In one possible implementation, the battery pack and the thermoelectric conversion device are stacked.

[0017] In one possible implementation, the first temperature component is disposed on an outer surface of the battery pack.

[0018] In one possible implementation, the battery pack and the thermoelectric conversion device are stacked; and the first temperature component is located between the battery pack and the thermoelectric conversion device.

[0019] In one possible implementation, the first temperature collector is located between the first temperature sensor and the thermoelectric conversion device, and the first temperature sensor is located between the first temperature collector and the battery pack.

[0020] In one possible implementation, there are multiple second temperature components; the multiple second temperature components are arranged at different positions outside the battery pack.

[0021] In one possible implementation, the second temperature component includes: a second temperature collector;

[0022] The second temperature collector is electrically connected to the thermoelectric conversion device.

[0023] In a possible implementation, the second temperature component further includes: a second temperature sensor; the second temperature sensor is electrically connected to the second temperature collector;

[0024] The second temperature sensor is electrically connected to the thermoelectric conversion device.

[0025] In one possible implementation, the second temperature component is not in contact with the battery pack.

[0026] In one possible implementation, the device further includes: a power-replenishing component; one end of the power-replenishing component is electrically connected to the thermoelectric conversion device, and the other end of the power-replenishing component is electrically connected to the battery pack.

[0027] A second aspect of the present application provides a battery pack system, comprising a battery pack and any of the above-mentioned thermoelectric devices;

[0028] The first temperature component in the thermoelectric device is disposed in the battery pack, and the second temperature component in the thermoelectric device is disposed outside the battery pack;

[0029] The thermoelectric conversion device in the thermoelectric device is electrically connected to the first temperature component and the second temperature component respectively;

[0030] The thermoelectric conversion device is used to convert the temperature difference between the first temperature component and the second temperature component into a voltage difference to supply power to the battery pack.

[0031] The embodiment of the present application can improve the performance of the battery pack system by providing the above-mentioned thermoelectric device in the battery pack system.

[0032] In one possible implementation, the battery pack includes: a tray and battery cells; at least a portion of the battery cells is located in the tray.

[0033] In one possible implementation, the device further includes: an intelligent control component; the intelligent control component is electrically connected to the battery pack and the thermoelectric conversion device respectively;

[0034] The intelligent control component is used to monitor the battery pack and control the thermoelectric conversion device according to the status of the battery pack.

[0035] In one possible implementation, the intelligent control component includes: a battery management controller and a substrate management controller electrically connected to the battery management controller;

[0036] The battery management controller is electrically connected to the battery pack, and the baseboard management controller is electrically connected to both the battery pack and the thermoelectric conversion device.

[0037] A third aspect of the present application provides an electrical device comprising at least any of the battery pack systems described above.

[0038] The embodiment of the present application can improve the performance of the electrical equipment by providing the above-mentioned battery pack system in the electrical equipment.

[0039] In one possible implementation, the electrical equipment is a vehicle; and the thermoelectric device in the battery pack system is disposed in the vehicle.

[0040] In one possible implementation, the vehicle includes at least a chassis, and the thermoelectric conversion device in the thermoelectric device is located between the chassis and a first temperature component in the thermoelectric device.

[0041] In one possible implementation, the thermoelectric conversion device is disposed at any position on the top outer surface, top inner surface, rear window outer surface, engine housing inner surface, chassis outer surface, or chassis inner surface of the vehicle.

[0042] In one possible implementation, the second temperature component in the thermoelectric device is disposed inside the vehicle;

[0043] Alternatively, the second temperature component in the thermoelectric device is disposed on an outer surface of the vehicle.

[0044] In one possible implementation, the second temperature component is disposed in any position in the interior space of the cab, the bottom of the chassis, the front hood, the front windshield, the roof, the top of the trunk, or the interior of the trunk.

[0045] In one possible implementation, the electrical equipment is an energy storage cabinet, and the thermoelectric device in the battery pack system is disposed in the energy storage cabinet.

[0046] In one possible implementation, the second temperature component in the thermoelectric device is disposed inside the energy storage cabinet;

[0047] Alternatively, the second temperature component in the thermoelectric device is arranged on the outer surface of the energy storage cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] To more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0049] Figure 1 A schematic diagram of the structure of the battery pack system provided in an embodiment of the present application;

[0050] Figure 2 A schematic diagram of the working process of the battery pack system provided in an embodiment of the present application;

[0051] Figure 3 A schematic diagram of the working principle of a thermoelectric conversion device in a thermoelectric device provided in an embodiment of the present application;

[0052] Figure 4A schematic diagram of the structure of a thermoelectric conversion device and a battery pack in a battery pack system provided in an embodiment of the present application;

[0053] Figure 5 A schematic structural diagram of a thermoelectric conversion device, a first temperature component, and a battery pack in a battery pack system provided in an embodiment of the present application;

[0054] Figure 6 A schematic diagram of the structure of the electrical equipment provided in an embodiment of the present application.

[0055] Reference numerals:

[0056] 100-thermoelectric device;

[0057] 110 - first temperature component; 111 - first temperature sensor; 112 - first temperature collector;

[0058] 120 - second temperature component; 121 - second temperature sensor; 122 - second temperature collector;

[0059] 130-thermoelectric conversion device;

[0060] 140-power supply component;

[0061] 200-battery pack system;

[0062] 210-battery pack;

[0063] 230-intelligent control component; 231-battery management controller; 232-baseboard management controller;

[0064] 300-Electrical equipment. DETAILED DESCRIPTION

[0065] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying 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 making creative efforts shall fall within the scope of protection of the present invention.

[0066] With the development of new energy, more and more fields are adopting new energy as a power source. Due to its advantages such as high energy density, rechargeable, safe and environmentally friendly, batteries are widely used in new energy vehicles, consumer electronics, energy storage systems and other fields.

[0067] Power batteries are core components of new energy vehicles, and their standby performance directly impacts the overall performance of the vehicle. However, the further development of electric vehicles still faces several challenges, the most significant of which are difficulty in charging, slow charging times, and long waiting times.

[0068] Solving the charging problem requires government and market-driven efforts to build charging infrastructure. However, the construction and widespread adoption of charging stations won't happen overnight. Various challenges remain, including standardization and unification of charging technology, as well as planning for the layout and geographic distribution of charging stations. Battery technology can address this by increasing battery pack capacity and charging speed, but ride comfort dictates that battery packs cannot be made too large. Furthermore, increased battery pack mass leads to increased power consumption. Therefore, it's difficult to achieve an unlimited range without compromising comfort and safety.

[0069] In order to solve the above problems, the embodiments of the present application provide a new thermoelectric device, a battery pack system and an electrical equipment. The thermoelectric device includes at least a first temperature component, a second temperature component and a thermoelectric conversion device. The first temperature component is arranged in the battery pack. The second temperature component is arranged outside the battery pack and is not in contact with the battery pack. The thermoelectric conversion device is electrically connected to the first temperature component and the second temperature component, respectively. The thermoelectric conversion device is used to convert the temperature difference between the first temperature component and the second temperature component into a voltage difference to power the battery pack. In the embodiment of the present application, when the battery power is less than the set value, the temperature difference between the electrical equipment and the inside of the battery pack can be used to charge the battery, or to power the internal load of the electrical equipment, thereby reducing the user's charging anxiety and mileage anxiety.

[0070] The following describes in detail the thermoelectric device provided in the embodiments of the present application, the battery pack system having the thermoelectric device, and the electrical equipment with reference to the accompanying drawings.

[0071] Figure 1 A schematic structural diagram of the battery pack system provided in an embodiment of the present application. Figure 2 A schematic diagram of the working process of the battery pack system provided in an embodiment of the present application. Figure 3 Schematic diagram of the working principle of the thermoelectric conversion device in the thermoelectric device provided in the embodiment of the present application.

[0072] Reference Figure 1 and Figure 2 As shown, an embodiment of the present application provides a thermoelectric device 100, which may include at least a first temperature component 110, a second temperature component 120 and a thermoelectric conversion device 130. The thermoelectric conversion device 130 may be electrically connected to the first temperature component 110 and the second temperature component 120, respectively.

[0073] In one possible implementation, the first temperature component 110 is suitable for being disposed in a battery pack, and the first temperature component 110 is used to obtain the temperature of the battery pack.

[0074] Specifically, the configuration of the first temperature component 110 may include but is not limited to the following two possible implementations:

[0075] One possible implementation is that the first temperature component 110 is disposed inside the battery pack.

[0076] In this case, the battery pack and the thermoelectric conversion device 130 may be stacked.

[0077] It should be noted that in the embodiments of this application, the core principle of the thermoelectric conversion device 130 is thermally excited carrier migration. This involves the high temperature at the hot end stimulating electrons in the N-type material and holes in the P-type material, causing the carriers to diffuse toward the cold end, creating a potential difference. This potential difference drives the electrons through the external load to form a current, achieving continuous conversion between thermal energy and electrical energy, and thus completing the current output of the external circuit. Finally, by connecting the series voltages, the voltage is accumulated to meet the actual power demand.

[0078] Another possible implementation is that the first temperature component 110 is disposed on the outer surface of the battery pack.

[0079] In this case, the battery pack and the thermoelectric conversion device 130 may be stacked, and the first temperature component 110 may be located between the battery pack and the thermoelectric conversion device 130 .

[0080] In the embodiment of the present application, the second temperature component 120 is suitable for being arranged outside the battery pack, and the second temperature component 120 is used to obtain the temperature outside the battery pack.

[0081] In some embodiments, the second temperature component 120 may not be in contact with the battery pack.

[0082] In an embodiment of the present application, the thermoelectric conversion device 130 is electrically connected to the first temperature component 110 and the second temperature component 120 respectively. The thermoelectric conversion device 130 is used to convert the temperature difference between the first temperature component 110 and the second temperature component 120 into a voltage difference to power the battery pack.

[0083] In other words, the thermoelectric conversion device 130 converts the temperature difference between the battery pack and the outside of the battery pack into a voltage difference to power the battery pack. This allows the user to charge the battery or power the internal load of the device using the temperature difference between the device and the inside of the battery pack when the battery charge falls below a set value, thereby reducing the user's anxiety about charging and range.

[0084] In the embodiment of the present application, the thermoelectric conversion device 130 generates electricity by temperature difference. Figure 3 As shown, when different conductors are connected to form a closed loop, a temperature difference between the two ends creates a voltage difference within the circuit. Using the Seebeck effect, for example, in an electric vehicle, if the surface or internal temperature of the electric vehicle changes, the second temperature sensor and the second temperature collector detect the heat difference between the surface and the interior of the battery pack, and then transfer the heat to the thermoelectric conversion device 130. The thermoelectric conversion device 130 uses this temperature difference to create a potential difference, thereby generating a charging current.

[0085] In the embodiment of the present application, the number of the first temperature components 110 can be one or more. When the number of the first temperature components 110 is more than one, the multiple first temperature components 110 can be set at different positions of the battery pack.

[0086] In the embodiment of the present application, the first temperature component 110 may include a first temperature collector 112 , wherein the first temperature collector 112 is electrically connected to the thermoelectric conversion device 130 .

[0087] It should be noted that in the embodiments of the present application, the first temperature collector 112 can be a heat pipe or a heat spreader. Taking the first temperature collector 112 as an example, the heat pipe can be composed of a shell, a wick, and a working fluid. The shell is evacuated and a small amount of working fluid is injected. The working principle of the heat pipe is that the working fluid at the heated end of the heat pipe evaporates and absorbs heat. The vapor flows to the cold end under pressure, then releases heat at the cold end, condenses into liquid, and refluxes through the capillary action of the wick to complete the cycle.

[0088] In the embodiment of the present application, the first temperature component 110 may further include: a first temperature sensor 111 , the first temperature sensor 111 is electrically connected to the first temperature collector 112 , and the first temperature sensor 111 is electrically connected to the thermoelectric conversion device 130 .

[0089] For example, in the embodiment of the present application, the first temperature sensor 111 may be electrically connected to the thermoelectric conversion device 130, the first temperature collector 112 may be electrically connected to the thermoelectric conversion device 130, or both the first temperature sensor 111 and the first temperature collector 112 may be electrically connected to the thermoelectric conversion device 130.

[0090] It should be noted that in the embodiment of the present application, when the first temperature component 110 is located between the battery pack and the thermoelectric conversion device 130, the first temperature collector 112 may be located between the first temperature sensor 111 and the thermoelectric conversion device 130, and the first temperature sensor 111 may be located between the first temperature collector 112 and the battery pack.

[0091] Figure 4 This is a schematic structural diagram of the thermoelectric conversion device 130 and the battery pack in the battery pack system provided in an embodiment of the present application. Figure 5 This is a structural diagram of the thermoelectric conversion device 130, the first temperature component 110, and the battery pack in the battery pack system provided in an embodiment of the present application.

[0092] Combine Figure 4 and Figure 5 As shown, in the embodiment of the present application, the first temperature collector 112 is arranged on the side of the battery pack facing the thermoelectric conversion device 130 (i.e., the upper surface of the battery pack). The first temperature collector 112 can accurately and efficiently collect the additional heat generated by the battery pack in the working state, and feed it back to the side of the thermoelectric conversion device 130 facing the battery pack (i.e., the lower contact surface of the thermoelectric conversion device 130). The temperature of this surface is T+ΔT. The side of the thermoelectric conversion device 130 facing away from the battery pack (i.e., the upper surface of the thermoelectric conversion device 130) receives heat from any other position with a temperature difference from the battery pack. The temperature of this surface is T.

[0093] The connection methods of the first temperature sensor 111 and the first temperature collector 112 to the battery pack may include, but are not limited to, hanging, mounting, coating, composite mounting, composite coating, or shelving. The connection locations of the first temperature sensor 111 and the first temperature collector 112 to the battery pack may include, but are not limited to, the interior of a single cell (e.g., on a pole piece in a battery case, on a separator, etc.), the exterior of a single cell or in a gap, the exterior of a battery module or in a gap, or other available space or surface in the battery pack, which may be a portion, several portions, or all of these.

[0094] See also Figure 5 As shown, in the embodiment of the present application, there is one first temperature collector 112, which is stacked with the battery pack and the thermoelectric conversion device 130 and located between the battery pack and the thermoelectric conversion device 130. There are five first temperature sensors 111, one of which is located at the center of the side of the battery pack facing the first temperature collector 112, and four first temperature sensors 111 are located at the four corners of the side of the battery pack facing the first temperature collector 112.

[0095] like Figure 5 As shown, in the embodiment of the present application, the size of the thermoelectric conversion device 130 may be slightly larger than the size of the battery pack.

[0096] In the embodiment of the present application, the number of the second temperature components 120 can be one or more. When the number of the second temperature components 120 is more than one, the multiple second temperature components 120 can be set at different positions outside the battery pack.

[0097] In the embodiment of the present application, the second temperature component 120 may include a second temperature collector 122 , wherein the second temperature collector 122 is electrically connected to the thermoelectric conversion device 130 .

[0098] It should be noted here that the structure and working principle of the second temperature collector 122 can be described with reference to the above-mentioned structure and working principle of the first temperature collector 112, and the embodiments of the present application will not be described in detail here.

[0099] In some embodiments, the second temperature assembly 120 may further include a second temperature sensor 121 , wherein the second temperature sensor 121 is electrically connected to the second temperature collector 122 and the second temperature sensor 121 is electrically connected to the thermoelectric conversion device 130 .

[0100] For example, in the embodiment of the present application, the second temperature sensor 121 may be electrically connected to the thermoelectric conversion device 130, the second temperature collector 122 may be electrically connected to the thermoelectric conversion device 130, or both the second temperature sensor 121 and the second temperature collector 122 may be electrically connected to the thermoelectric conversion device 130.

[0101] In the embodiment of the present application, the second temperature sensor 121 and the second temperature collector 122 can be installed anywhere outside the battery pack. The second temperature sensor 121 and the second temperature collector 122 can be installed anywhere, such as the interior of the cab, the bottom of the chassis, the front hood, the front windshield, the roof, the top of the trunk, or inside the trunk, as long as a temperature difference is maintained between the second temperature sensor 111 and the first temperature collector 112 inside the battery pack.

[0102] Taking an electric vehicle as an example, the connection method between the second temperature sensor 121 and the second temperature collector 122 and the electric vehicle may include, but is not limited to, hanging, mounting, coating, composite mounting, or composite coating. The connection location between the second temperature sensor 121 and the second temperature collector 122 and the electric vehicle may include, but is not limited to, the exterior surface of the electric vehicle, the surface of the interior space of the electric vehicle, the interior space of the electric vehicle, other available space or surface of the electric vehicle excluding the battery pack, and the surface or interior of other parts or accessories of the electric vehicle excluding the battery pack. In addition, when there are multiple second temperature sensors 121 and second temperature collectors 122, they may be located at a portion, multiple portions, or all of the aforementioned multiple locations.

[0103] Figure 6 A schematic diagram of the structure of the electrical equipment provided in an embodiment of the present application.

[0104] Figure 6Several possible installation locations for the thermoelectric conversion device 130 on an electric vehicle are shown. For example, the thermoelectric conversion device 130 can be installed on the outer surface of the top of the electric vehicle, the inner surface of the top, the outer surface of the rear window, the inner surface of the engine housing, the outer surface of the vehicle chassis, or the inner surface of the vehicle chassis, etc. The embodiments of the present application are not limited to these locations and are not limited to the above examples.

[0105] In this embodiment of the present application, the thermoelectric device 100 further includes a charging assembly 140. One end of the charging assembly 140 is electrically connected to the thermoelectric conversion device 130, and the other end of the charging assembly 140 is electrically connected to the battery pack. Thermoelectric conversion device 130 converts the temperature difference between the battery pack and the outside of the battery pack into a voltage difference, which powers the charging assembly 140, which then charges the battery pack.

[0106] Taking electric vehicles as an example, in summer or in hot environments, the surface temperature of an electric vehicle can sometimes exceed 60°C. Meanwhile, if the vehicle is parked in the sun or in a sealed environment, the internal temperature can exceed 50°C or even reach 70°C for a short period of time. In cold winter conditions, the surface temperature of an electric vehicle can drop to several degrees below zero or even lower. The internal temperature of an electric vehicle is also affected by the external environment and can drop to near the outside temperature or even lower in cold weather. The battery pack, on the other hand, generally maintains a relatively constant temperature to ensure battery health. Therefore, regardless of whether the environment is cold or hot, there will be a significant temperature difference between the surface or interior of the electric vehicle and the battery pack.

[0107] This embodiment of the present application incorporates a thermoelectric device 100, wherein a thermoelectric conversion element 130 is electrically connected to a charging assembly 140, which is in turn electrically connected to the battery pack. When the surface or internal temperature of the electric vehicle increases or decreases, the thermoelectric conversion element 130 generates a voltage difference. When the battery pack's internal charge falls below a set value, charging is determined to be acceptable. The charging assembly 140 is then activated, allowing the thermoelectric conversion element 130 to charge the battery pack through the charging assembly 140.

[0108] It should be noted that in the embodiments of this application, taking electric vehicles as an example, the thermoelectric device 100 can be applied to both pure electric vehicles (BEVs) and plug-in hybrid electric vehicles (PHEVs). It can be used when the electric vehicle is running or when the vehicle is not running. When the battery charge falls below the set value, the temperature difference between the surface or interior of the electric vehicle and the battery pack can be used to charge the battery, thereby reducing the user's charging anxiety and range anxiety.

[0109] It can be understood that in the embodiments of the present application, the heat that increases or decreases in the electric vehicle due to environmental influences, the heat generated during the operation of the electric vehicle, and even the waste heat of the human body on the seat and steering wheel can all be converted into electrical energy. Therefore, the embodiments of the present application can achieve the goal of protecting the environment and alleviating users' mileage anxiety.

[0110] In addition, an embodiment of the present application also provides a battery pack system 200, which may include a battery pack 210 and the above-mentioned thermoelectric device 100, wherein the first temperature component 110 in the thermoelectric device 100 is arranged in the battery pack 210, and the second temperature component 120 in the thermoelectric device 100 is arranged outside the battery pack 210.

[0111] The thermoelectric conversion device 130 in the thermoelectric apparatus 100 is electrically connected to the first temperature component 110 and the second temperature component 120 respectively. The thermoelectric conversion device 130 is used to convert the temperature difference between the first temperature component 110 and the second temperature component 120 into a voltage difference to power the battery pack 210.

[0112] By providing the thermoelectric device 100 in the battery pack system 200 , the performance of the battery pack system 200 can be improved.

[0113] like Figure 5 As shown, in the embodiment of the present application, the battery pack 210 may further include a battery cell and a tray, and at least a portion of the battery cell may be located in the tray.

[0114] In the embodiment of the present application, the size of the thermoelectric conversion device 130 may be smaller than the size of the tray.

[0115] Reference Figure 1 As shown, in the embodiment of the present application, the battery pack system 200 may further include an intelligent control component 230, which is electrically connected to the battery pack 210 and the thermoelectric conversion device 130. The intelligent control component 230 is used to monitor the battery pack 210 and control the thermoelectric conversion device 130 based on the status of the battery pack 210.

[0116] Specifically, continue to refer to Figure 1 As shown, in the embodiment of the present application, the intelligent control component 230 may include a battery management controller 231 and a baseboard management controller 232 , and the baseboard management controller 232 is electrically connected to the battery management controller 231 .

[0117] In the embodiment of the present application, the battery management controller 231 is electrically connected to the battery pack 210 , and the baseboard management controller 232 is electrically connected to both the battery pack 210 and the thermoelectric conversion device 130 .

[0118] The control logic of the battery pack system 200 in the embodiment of the present application is as follows Figure 2 As shown, using an electric vehicle as an example, the baseboard management controller 232 and battery management controller 231 can self-diagnose and determine the appropriate charging strategy based on the vehicle's current battery charge and discharge status. If the battery pack 210 charge level is above a set value, the thermoelectric device 100 does not intervene, and the vehicle-side computer continuously updates the charge level. When the battery pack 210 charge level is below a set value, the battery management controller 231 connects to the thermoelectric conversion device 130 and determines that charging is acceptable. The charging component 140 is then enabled, and the thermoelectric device 100 can charge the battery pack 210. At this point, the cloud pushes a notification to the vehicle-side computer indicating that charging is in progress. When the charge level reaches 100% or the set value, the battery management controller 231 shuts off the charging strategy, and the cloud pushes a notification to the vehicle-side computer indicating that the charging is complete.

[0119] In addition, an embodiment of the present application further provides an electric device 300 , which may at least include the above-mentioned battery pack system 200 .

[0120] The electrical equipment 300 of the present invention can be a conventional electrical equipment 300 in the field, such as power equipment (such as electric vehicles), electronic equipment (such as computers, mobile phones, digital cameras, printers, fax machines, etc.), wearable devices (such as watches, bracelets, VR glasses, etc.), household appliances (such as air conditioners, refrigerators, washing machines, microwave ovens, etc.), etc., without special restrictions.

[0121] like Figure 6 As shown, the electrical device 300 is a vehicle as an example, wherein the vehicle can be a car, a bus, or a truck. For example, the vehicle can be an electric vehicle / electric vehicle (EV), a pure electric vehicle / battery electric vehicle (PEV / BEV), a hybrid electric vehicle (HEV), a range extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), a new energy vehicle (NEV), or any vehicle with a battery.

[0122] The vehicle may further include a vehicle body, an axle, and a motor, wherein the battery pack 210, the axle, and the motor may all be disposed on the vehicle body. The battery pack 210 may be electrically connected to the motor, which may be connected to the axle. The battery pack 210 may power the motor to rotate, which in turn may drive the axle to rotate, thereby enabling the vehicle to travel.

[0123] The vehicle body may include a vehicle chassis and a vehicle body mounted on the chassis. The vehicle body may include a passenger compartment, which may include a driver's seat and passenger seats. The driver may operate the vehicle from the driver's seat. For example, the vehicle body may also include a steering wheel, clutch, brake, and other structural components that enable the vehicle to function fully, although this application does not limit this.

[0124] In some embodiments, the power-consuming device 300 may be a vehicle, and the thermoelectric device 100 in the battery pack system 200 may be installed in the vehicle.

[0125] Specifically, the thermoelectric conversion device 130 in the thermoelectric device 100 may be located between the vehicle chassis and the first temperature component 110 in the thermoelectric device 100 .

[0126] For example, the thermoelectric conversion device 130 may be disposed anywhere on the top outer surface, top inner surface, rear window outer surface, engine housing inner surface, chassis outer surface, or chassis inner surface of the vehicle.

[0127] In addition, in the embodiment of the present application, the second temperature component 120 in the thermoelectric device 100 can be disposed inside the vehicle. Alternatively, the second temperature component 120 in the thermoelectric device 100 can be disposed on the outer surface of the vehicle.

[0128] For example, the second temperature component 120 may be disposed in the interior space of the cab, the bottom of the chassis, the front hood, the front windshield, the roof, the top of the trunk, or any other location within the trunk.

[0129] Alternatively, in some embodiments, the electrical device may be an energy storage cabinet, and the thermoelectric device 100 in the battery pack system 200 may be disposed in the energy storage cabinet.

[0130] Specifically, the second temperature component 120 in the thermoelectric device 100 may be disposed inside the energy storage cabinet. Alternatively, the second temperature component 120 in the thermoelectric device 100 may be disposed on an outer surface of the energy storage cabinet.

[0131] The embodiment of the present application can improve the performance of the electric device 300 by providing the above-mentioned battery pack system 200 in the electric device 300.

[0132] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0133] In the description of the present invention, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0134] Unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed," etc. should be interpreted broadly. For example, they may refer to fixed or removable connections, or integration. They may be directly connected or indirectly connected through an intermediate medium. They may also refer to internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances. Furthermore, the terms "first," "second," etc., etc., are used for descriptive purposes only and should not be construed to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated.

[0135] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A thermoelectric device, characterized in that At least: a first temperature component, wherein the first temperature component is adapted to be disposed on the battery pack; a second temperature component, the second temperature component being adapted to be disposed outside the battery pack; and a thermoelectric conversion device electrically connected to the first temperature component and the second temperature component, respectively; The thermoelectric conversion device is used to convert the temperature difference between the first temperature component and the second temperature component into a voltage difference to supply power to the battery pack.

2. The thermoelectric device according to claim 1, characterized in that There are multiple first temperature components; the multiple first temperature components are arranged at different positions of the battery pack.

3. The thermoelectric device according to claim 1, wherein The first temperature component includes: a first temperature collector; the first temperature collector is electrically connected to the thermoelectric conversion device.

4. The thermoelectric device according to claim 3, characterized in that The first temperature component further includes: a first temperature sensor; the first temperature sensor is electrically connected to the first temperature collector; The first temperature sensor is electrically connected to the thermoelectric conversion device.

5. The thermoelectric device according to claim 4, characterized in that The first temperature component is disposed inside the battery pack.

6. The thermoelectric device according to claim 5, characterized in that The battery pack and the thermoelectric conversion device are stacked.

7. The thermoelectric device according to claim 4, characterized in that The first temperature component is disposed on an outer surface of the battery pack.

8. The thermoelectric device according to claim 7, characterized in that The battery pack and the thermoelectric conversion device are stacked; and the first temperature component is located between the battery pack and the thermoelectric conversion device.

9. The thermoelectric device according to claim 8, characterized in that The first temperature collector is located between the first temperature sensor and the thermoelectric conversion device, and the first temperature sensor is located between the first temperature collector and the battery pack.

10. The thermoelectric device according to claim 1, wherein There are multiple second temperature components; the multiple second temperature components are set at different positions outside the battery pack.

11. The thermoelectric device according to claim 1, wherein The second temperature component includes: a second temperature collector; the second temperature collector is electrically connected to the thermoelectric conversion device.

12. The thermoelectric device according to claim 11, characterized in that The second temperature component further includes: a second temperature sensor; the second temperature sensor is electrically connected to the second temperature collector; The second temperature sensor is electrically connected to the thermoelectric conversion device.

13. The thermoelectric device according to claim 1, wherein The second temperature component is not in contact with the battery pack.

14. The thermoelectric device according to any one of claims 1 to 13, characterized in that: Also includes: A power-replenishing component; one end of the power-replenishing component is electrically connected to the thermoelectric conversion device, and the other end of the power-replenishing component is electrically connected to the battery pack.

15. A battery pack system, characterized in that: include: A battery pack and a thermoelectric device according to any one of claims 1 to 14; The first temperature component in the thermoelectric device is disposed in the battery pack, and the second temperature component in the thermoelectric device is disposed outside the battery pack; The thermoelectric conversion device in the thermoelectric device is electrically connected to the first temperature component and the second temperature component respectively; The thermoelectric conversion device is used to convert the temperature difference between the first temperature component and the second temperature component into a voltage difference to supply power to the battery pack.

16. The battery pack system according to claim 15, characterized in that: The battery pack includes a tray and battery cells; at least a portion of the battery cells is located in the tray.

17. The battery pack system according to claim 15, characterized in that: Also includes: An intelligent control component; the intelligent control component is electrically connected to the battery pack and the thermoelectric conversion device respectively; The intelligent control component is used to monitor the battery pack and control the thermoelectric conversion device according to the status of the battery pack.

18. The battery pack system according to claim 17, characterized in that: The intelligent control component includes: a battery management controller and a substrate management controller electrically connected to the battery management controller; The battery management controller is electrically connected to the battery pack, and the baseboard management controller is electrically connected to both the battery pack and the thermoelectric conversion device.

19. An electrical device, characterized in that: At least including the battery pack system described in any one of claims 15-18 above.

20. The electrical equipment according to claim 19, characterized in that: The electrical equipment is a vehicle; the thermoelectric device in the battery pack system is arranged in the vehicle.

21. The electrical equipment according to claim 20, characterized in that: The vehicle includes at least a chassis, and the thermoelectric conversion device in the thermoelectric device is located between the chassis and a first temperature component in the thermoelectric device.

22. The electrical equipment according to claim 21, characterized in that: The thermoelectric conversion device is provided at any position of the top outer surface, the top inner surface, the rear window outer surface, the engine housing inner surface, the chassis outer surface or the chassis inner surface of the vehicle.

23. The electrical equipment according to claim 20, characterized in that: The second temperature component of the thermoelectric device is disposed inside the vehicle; Alternatively, the second temperature component in the thermoelectric device is disposed on an outer surface of the vehicle.

24. The electrical equipment according to claim 23, characterized in that: The second temperature component is arranged at any position in the interior space of the cab, the bottom of the chassis, the front hood, the front windshield, the roof, the top of the trunk or the inside of the trunk.

25. The electrical equipment according to claim 19, characterized in that: The electrical equipment is an energy storage cabinet, and the thermoelectric device in the battery pack system is arranged in the energy storage cabinet.

26. The electrical equipment according to claim 25, characterized in that: The second temperature component in the thermoelectric device is arranged inside the energy storage cabinet; Alternatively, the second temperature component in the thermoelectric device is arranged on the outer surface of the energy storage cabinet.

Images