Vehicle battery system and vehicle

Abstract

This disclosure relates to a vehicle battery system and a vehicle. The vehicle battery system includes a hydrogen production module, a fuel cell, and a recycling module. The hydrogen production module is connected to both the recycling module and the fuel cell. The hydrogen production module obtains initial and / or recycled feedstocks. After decomposition, the initial and / or recycled feedstocks produce hydrogen, decomposition products, and heat of reaction. The hydrogen and heat of reaction are transferred to the fuel cell, and the decomposition products are transferred to the recycling module. The recycling module receives the decomposition products provided by the hydrogen production module, converts the decomposition products into recycled feedstocks, and transfers the recycled feedstocks to the hydrogen production module. This enables cyclic hydrogen production, thereby effectively improving the sustainability and economy of hydrogen production. Furthermore, by supplying heat to the fuel cell, the fuel cell can be started quickly, thereby effectively improving the environmental adaptability of the fuel cell.

Description

Technical Field

[0001] This disclosure relates to the field of vehicle technology, and more specifically, to a vehicle battery system and a vehicle. Background Technology

[0002] In existing technologies, hydrogen production in vehicle battery systems relies on fossil fuel reforming or water electrolysis processes driven by non-renewable energy sources, resulting in high carbon emissions and low overall energy conversion efficiency during hydrogen production. Furthermore, in extreme low-temperature conditions below 0°C or even -20°C, the moisture inside the fuel cell is prone to freezing, preventing the fuel cell from starting properly and reducing the operational reliability and environmental adaptability of battery-powered vehicles in cold climates. Therefore, existing vehicle battery systems suffer from poor hydrogen production sustainability and poor environmental adaptability. Summary of the Invention

[0003] To overcome the problems of poor hydrogen production sustainability and difficulty in starting up at low temperatures in related technologies, this disclosure provides a vehicle battery system and a vehicle.

[0004] According to a first aspect of the present disclosure, a vehicle battery system is provided, the vehicle battery system including a hydrogen production module, a fuel cell, and a recycling module, wherein the hydrogen production module is connected to both the recycling module and the fuel cell. The hydrogen production module is used to obtain initial raw materials and / or recycled raw materials. After the initial raw materials and / or recycled raw materials are decomposed, hydrogen, decomposition products and heat of reaction are generated. The hydrogen and heat of reaction are transferred to the fuel cell, and the decomposition products are transferred to the recovery module. The recycling module is used to receive the decomposition products provided by the hydrogen production module, convert the decomposition products into recycled raw materials, and transfer the recycled raw materials to the hydrogen production module.

[0005] Optionally, the vehicle battery system further includes a controller, which is connected to both the hydrogen production module and the fuel cell. The controller is configured to, in response to receiving a vehicle start signal, acquire the ambient temperature around the fuel cell, and, if the ambient temperature is determined to be less than or equal to a preset temperature threshold, control the hydrogen production module to transfer the reaction heat generated during the decomposition of the initial feedstock and / or the regenerated feedstock to the fuel cell.

[0006] Optionally, the vehicle battery system further includes a coolant circuit, and the hydrogen production module includes a reaction assembly and a heat exchange assembly; The reaction assembly includes a raw material inlet, a gaseous product outlet, a decomposition product outlet, and a reaction chamber; The heat exchange assembly includes a high-temperature gas inlet, a low-temperature gas outlet, a coolant inlet, and a coolant outlet. The inlet end of the reaction chamber is connected to the raw material inlet end, the outlet end of the reaction chamber is connected to the gas product outlet end and the decomposition product outlet end, the gas product outlet end is connected to the high temperature gas inlet end, the coolant outlet end is connected to the coolant circuit, the decomposition product outlet end is connected to the recovery module, and the low temperature gas outlet end is connected to the fuel cell.

[0007] Optionally, the coolant circuit includes a coolant circulation pump and an electronic valve, the coolant outlet is connected to the inlet of the coolant circulation pump, one end of the electronic valve is connected to the outlet of the coolant circulation pump, and the other end of the electronic valve is connected to the fuel cell; The reaction assembly is used to decompose the initial raw material and / or the regenerated raw material through the reaction chamber and to provide reaction heat to the coolant circuit; The controller is used to send a heating signal to the coolant circulation pump and the electronic valve when it is determined that the ambient temperature is less than or equal to a preset temperature threshold. The coolant circuit is used to control the operation of the coolant circulation pump and the opening of the electronic valve to heat the fuel cell when the coolant circulation pump and electronic valve receive a heating signal.

[0008] Optionally, the vehicle battery system further includes a purification component and a storage component. The input of the purification component is connected to the output of the recovery module, the output of the purification component is connected to the input of the storage component, and the output of the storage component is connected to the input of the hydrogen production module. The purification component is used to purify the impurity-containing recycled raw material output by the recovery module to obtain the recyclable recycled raw material. The storage component is used to store the recycled raw materials and transport the recycled raw materials to the hydrogen production module.

[0009] Optionally, the vehicle battery system includes a controller and a power generation component, the power generation component being connected to the recycling module, and the power generation component including a photovoltaic energy storage module. The photovoltaic energy storage module is used to directly convert solar energy into electrical energy and store the electrical energy. The controller is used to control the photovoltaic energy storage module to supply power to the hydrogen production module and the recovery module; The recycling module is used to receive electrical energy provided by the power generation component and convert the decomposition products into recycled raw materials using the electrical energy provided by the power generation component.

[0010] Optionally, the controller is configured to, in response to receiving a vehicle start signal, acquire the pressure value of the hydrogen production module, and, if it is determined that the pressure value in the hydrogen production module is within a preset pressure range, start the hydrogen production module.

[0011] Optionally, the vehicle battery system further includes an alarm component and a controller, the controller being connected to the alarm component. The controller is used to obtain the hydrogen purity in the hydrogen production module. If it is determined that the pressure value of the hydrogen production module is not within the pressure range, or the hydrogen purity has not reached the preset purity threshold, the controller controls the alarm component to sound an alarm and controls the hydrogen production module to stop working.

[0012] Optionally, the vehicle battery system also includes a controller. The controller is configured to acquire the first current weight of the initial raw material in the hydrogen production module and the second current weight of the regenerated raw material in the recovery module, and to start the recovery module when the first current weight is less than or equal to a first weight threshold and the second current weight is greater than or equal to a second weight threshold.

[0013] According to a second aspect of the present disclosure, a vehicle is provided, including the vehicle battery system provided in the first aspect of the present disclosure.

[0014] Through the above technical solution, the vehicle battery system includes a hydrogen production module, a fuel cell, and a recycling module. The hydrogen production module is connected to both the recycling module and the fuel cell. The hydrogen production module is used to obtain initial raw materials and / or recycled raw materials. These initial raw materials and / or recycled raw materials are decomposed to produce hydrogen, decomposition products, and heat of reaction. The hydrogen and heat of reaction are transferred to the fuel cell, and the decomposition products are transferred to the recycling module. The recycling module receives the decomposition products provided by the hydrogen production module, converts the decomposition products into recycled raw materials, and transfers the recycled raw materials back to the hydrogen production module. In this way, by transferring the hydrogen and heat of reaction generated from the decomposition of the initial raw materials and / or recycled raw materials input from the recycling module to the fuel cell, and transferring the decomposition products to the recycling module, the recycling module, by receiving the decomposition products provided by the hydrogen production module and transferring the converted recycled raw materials back to the hydrogen production module, cyclic hydrogen production can be achieved, thereby effectively improving the sustainability and economy of hydrogen production. Furthermore, by providing the fuel cell with the heat of reaction generated by the hydrogen production module, the fuel cell can be started quickly, thereby effectively improving the environmental adaptability of the fuel cell.

[0015] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram illustrating a vehicle battery system according to an exemplary embodiment; Figure 2 It is based on Figure 1 The illustrated embodiment shows a schematic diagram of a vehicle battery system; Figure 3 It is based on Figure 2 The illustrated embodiment shows a schematic diagram of a vehicle battery system; Figure 4 It is based on Figure 1 The illustrated embodiment shows a schematic diagram of another vehicle battery system; Figure 5 This is a block diagram illustrating a vehicle according to an exemplary embodiment.

[0017] Explanation of reference numerals in the attached figures 100 Vehicle Battery System 101 Hydrogen Production Module 102 Recycling Module 103 Fuel Cell 104 Coolant Circulation Pump 105 Electronic Valve 1011 Reaction Component 1012 Heat Exchange Component 1013 Coolant Circuit 201 Controller 301 Purification Component 302 Storage Component 303 power generation module, 3031 photovoltaic energy storage module 304 Alarm Components 401 Ammonia Borane Decomposition and Hydrogen Production Unit 402 Heat exchange device; 403 Membrane purification device 404 Hydrogen Buffer Tank 405 Fuel Cell Module 406 Byproduct Electrolytic Recovery Unit; 407 Ammonia Borane Purification Unit 408 Ammonia Borane Storage Tank 409 Photovoltaic Module 410 battery, 411 distribution box 412 Main Controller M Circulating Pump ETV electronic three-way valve 413 ambient temperature sensor 414 Hydrogen pressure sensor; 415 Hydrogen purity sensor 416 First mass sensor 417 Second mass sensor 418 Light Sensor Detailed Implementation Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0018] Before detailing the specific embodiments of this disclosure, the application scenarios of this disclosure are first explained below. This disclosure can be applied to scenarios where the hydrogen production module of a vehicle battery system provides hydrogen to the fuel cell. In the prior art, the hydrogen production method of vehicle battery systems relies on fossil fuel reforming or water electrolysis processes driven by non-renewable energy sources, resulting in high carbon emissions and low overall energy conversion efficiency during hydrogen production. Furthermore, under extreme low-temperature conditions below 0°C or even -20°C, the water inside the fuel cell is prone to freezing, causing the fuel cell to fail to start normally and reducing the operational reliability and environmental adaptability of fuel cell vehicles in cold climates. Therefore, in the prior art, vehicle battery systems suffer from poor hydrogen production sustainability and difficulty in starting up in low-temperature environments.

[0019] To address the aforementioned issues, the present disclosure provides a solution that, through the decomposition of initial raw materials and / or recycled raw materials input from the recovery module, generates hydrogen and reaction heat, which are then transferred to the fuel cell. The decomposition products are transferred to the recovery module, which receives the decomposition products from the hydrogen production module and transfers the converted recycled raw materials to the hydrogen production module. This enables cyclic hydrogen production, effectively improving the sustainability and economy of hydrogen production. Furthermore, by providing the fuel cell with the reaction heat generated by the hydrogen production module, the fuel cell can be started up quickly, thereby effectively improving its environmental adaptability.

[0020] Figure 1 This is a schematic diagram illustrating a vehicle battery system according to an exemplary embodiment, such as... Figure 1 As shown, the vehicle battery system 100 includes a hydrogen production module 101, a recovery module 102, and a fuel cell 103. The hydrogen production module 101 is connected to both the recovery module 102 and the fuel cell 103. The hydrogen production module 101 is used to obtain initial raw materials and / or recycled raw materials. After the initial raw materials and / or recycled raw materials are decomposed, hydrogen, decomposition products and heat of reaction are generated. The hydrogen and heat of reaction are transferred to the fuel cell 103, and the decomposition products are transferred to the recovery module 102. The recycling module 102 is used to receive the decomposition products provided by the hydrogen production module 101, convert the decomposition products into recycled raw materials, and transfer the recycled raw materials to the hydrogen production module 101.

[0021] The initial and regenerated raw materials can be solid ammonia borane (NH3BH3) or an ammonia borane solution, or other types of hydrogen storage materials. The ammonia borane can be dissolved in a specific ionic liquid (such as [EMIM][Cl], (1-ethyl-3-methylimidazolium chloride)) to form a solution. The decomposition products may include BH3 (borane), NH3 (ammonia), and the boron-nitrogen polymer [-NHBH-]. n It may also include decomposition byproducts of other types of hydrogen storage materials.

[0022] In one embodiment, the initial raw material and the regenerated raw material can be solid ammonia borane or an ammonia borane solution. In the hydrogen production module 101, solid ammonia borane or an ammonia borane solution reacts with a catalyst, and the reaction principle is as follows: n NH3BH3 [-NHBH-] n +2 n H2, the catalyst includes, but is not limited to, noble metal catalysts, alloy-supported mesoporous silica, activated carbon, carbon aerogel, graphitic carbon nitride, and other types of catalysts. Furthermore, the catalyst is supported on the fiber wall to increase the reaction efficiency of the solid ammonia borane or ammonia borane solution. Additionally, the reaction of the solid ammonia borane or ammonia borane solution in the hydrogen production module 101 is an exothermic reaction, which can transfer the heat generated during the exothermic process to the fuel cell 103, enabling rapid start-up of the fuel cell 103 under low-temperature conditions.

[0023] The above technical solution, by transferring the hydrogen and reaction heat generated after the initial raw materials and / or recycled raw materials input from the recovery module are decomposed to the fuel cell, and transferring the decomposition products to the recovery module, the recovery module receives the decomposition products provided by the hydrogen production module and transfers the recycled raw materials converted from the decomposition products to the hydrogen production module, can realize cyclic hydrogen production, thereby effectively improving the sustainability and economy of hydrogen production. Furthermore, by providing the fuel cell with the reaction heat generated by the hydrogen production module, the fuel cell can be started quickly, thereby effectively improving the environmental adaptability of the fuel cell.

[0024] Optionally, the vehicle battery system 100 further includes a controller 201, which is connected to the hydrogen production module 101 and the fuel cell 103, respectively. The controller 201 is configured to, in response to receiving a vehicle start signal, acquire the ambient temperature around the fuel cell 103, and, if the ambient temperature is determined to be less than or equal to a preset temperature threshold, control the hydrogen production module 101 to transfer the reaction heat generated during the decomposition of the initial raw material and / or the regenerated raw material to the fuel cell 103.

[0025] The fuel cell 103 includes a stack. The reaction of solid ammonia borane or ammonia borane solution in the hydrogen production module 101 is an exothermic reaction, which can transfer the heat generated by the solid ammonia borane or ammonia borane solution during the exothermic process to the fuel cell 103, so as to realize the rapid start-up of the fuel cell 103 in low-temperature environments.

[0026] In one embodiment, in response to receiving a vehicle start signal, the ambient temperature around the fuel cell stack can be obtained by an ambient temperature sensor. If the ambient temperature is determined to be less than or equal to a preset temperature threshold, the hydrogen production module 101 is controlled to transfer the reaction heat generated during the decomposition of the initial feedstock and / or the regenerated feedstock to the fuel cell 103.

[0027] The above technical solution, by providing the fuel cell with the reaction heat generated by the hydrogen production module, can quickly start the fuel cell, thereby effectively improving the environmental adaptability of the fuel cell.

[0028] Figure 2 It is based on Figure 1 The illustrated embodiment shows a schematic diagram of a vehicle battery system, such as Figure 2 As shown, the hydrogen production module 101 includes a reaction assembly 1011, a heat exchange assembly 1012, and a coolant circuit 1013; The reaction assembly 1011 includes a raw material inlet, a gaseous product outlet, a decomposition product outlet, and a reaction chamber. The heat exchange assembly 1012 includes a high-temperature gas inlet, a low-temperature gas outlet, a coolant inlet, and a coolant outlet. The inlet end of the reaction chamber is connected to the raw material inlet end, the outlet end of the reaction chamber is connected to the gas product outlet end and the decomposition product outlet end, the gas product outlet end is connected to the high temperature gas inlet end, the coolant outlet end is connected to the coolant circuit 1013, the decomposition product outlet end is connected to the recovery module 102, and the low temperature gas outlet end is connected to the fuel cell 103.

[0029] The raw material inlet is used to receive ammonia borane supplied by an external system or ammonia borane transmitted by the recovery module 102. The gaseous product outlet is used to output a high-temperature mixed gas, which may include hydrogen (H2), borane (BH3), and ammonia (NH3). The decomposition product outlet is used to transmit the boron-nitrogen polymer [-NHBH-] to the recovery module 102. n The reaction chamber is used to decompose solid ammonia borane or ammonia borane solution. The heat exchange component 1012 can be an intercooler or other heat exchange components, used to obtain the reaction heat of the hydrogen production module 101, convert the high-temperature mixed gas input from the reaction component 1011 into a low-temperature gas, and deliver hydrogen (H2) to the fuel cell 103 through the low-temperature gas outlet, and deliver borane (BH3) and ammonia (NH3) to the recovery module 102. The high-temperature gas inlet is connected to the gas product outlet and is used to receive the high-temperature mixed gas transmitted by the reaction component 1011. The coolant inlet is connected to an external system and is used to receive room-temperature coolant. The coolant outlet is connected to the coolant circuit 1013 and is used to conduct the reaction heat generated by the reaction component 1011 to the coolant circuit 1013, so that the reaction heat is transferred to the fuel cell 103 through the coolant circuit 1013.

[0030] In the above technical solution, the initial raw materials and / or recycled raw materials react in the reaction assembly to generate heat of reaction, the heat of reaction is obtained through the heat exchange assembly, and the heat of reaction is transferred to the fuel cell through the coolant circuit, so as to realize the rapid start-up of the fuel cell in low temperature environment, thereby effectively improving the environmental adaptability of the fuel cell.

[0031] Alternatively, still using Figure 2 For example, the coolant circuit 1013 includes a coolant circulation pump 104 and an electronic valve 105. The coolant outlet is connected to the inlet of the coolant circulation pump 104, one end of the electronic valve 105 is connected to the outlet of the coolant circulation pump 104, and the other end of the electronic valve 105 is connected to the fuel cell 103. The reaction assembly 1011 is used to decompose the initial raw material and / or the regenerated raw material through the reaction chamber and to provide reaction heat to the coolant circuit 1013; The controller 201 is used to send a heating signal to the coolant circulation pump 104 and the electronic valve 105 when it is determined that the ambient temperature is less than or equal to a preset temperature threshold. The coolant circuit 1013 is used to control the coolant circulation pump 104 to operate and the electronic valve 105 to open when the coolant circulation pump 104 and the electronic valve 105 receive a heating signal, so as to heat the fuel cell 103.

[0032] The electronic valve 105 may be an electronic three-way valve.

[0033] In one embodiment, when a vehicle start signal is received, the coolant circulation pump 104 is turned on. When the coolant circulation pump 104 is turned on, the ambient temperature around the fuel cell 103 is obtained through an ambient temperature sensor. If the ambient temperature is ≤0°C, the electronic valve 105 is controlled to deliver high-temperature coolant to the fuel cell 103 to heat the fuel cell 103; if the ambient temperature is >0°C, the electronic valve 105 is controlled to deliver high-temperature coolant to other modules of the vehicle for heating, which will not be described in detail here.

[0034] The above technical solution controls the electronic valve by starting and stopping the vehicle and monitoring the ambient temperature. It can recover and utilize the heat generated by the decomposition of ammonia borane to heat the fuel cell, enabling rapid start-up in low-temperature environments.

[0035] Figure 3 It is based on Figure 2 The illustrated embodiment shows a schematic diagram of a vehicle battery system, such as Figure 3 As shown, the vehicle battery system 100 further includes a purification component 301 and a storage component 302. The input terminal of the purification component 301 is connected to the output terminal of the recovery module 102, the output terminal of the purification component 301 is connected to the input terminal of the storage component 302, and the output terminal of the storage component 302 is connected to the input terminal of the hydrogen production module 101. The purification component 301 is used to purify the recovered raw material containing impurities output by the recovery module 102 to obtain the recyclable raw material. The storage component 302 is used to store the recycled raw materials and transport the recycled raw materials to the hydrogen production module 101.

[0036] The purification component 301 can be an ammonia borane purification and drying component, or it can be a purification component 301 made of other types of hydrogen storage materials. The storage component 302 can be an ammonia borane storage tank, or it can be other types of storage devices. The initial raw material and the regenerated raw material can be solid ammonia borane or an ammonia borane solution. The recovered raw material can be ammonium borohydride (NH4BH4).

[0037] In one embodiment, the ammonia borane purification and drying assembly includes a recovered raw material inlet, an ammonia borane (NH3BH3) outlet, a hydrogen (H2) outlet, and a water vapor outlet. The recovered raw material NH4BH4 is dried, dehydrated, and evaporated to crystallize, producing solid ammonia borane. The reaction principle is as follows: NH4BH4… NH3BH3 + H2. Hydrogen and water vapor can be further purified using a membrane purification device to recover H2, improving hydrogen utilization. The ammonia borane solid flows to the ammonia borane storage tank, enabling the reuse of heat and hydrogen storage materials.

[0038] It should be noted that the ammonia borane storage tank is used to store solid ammonia borane. The tank is equipped with an ammonia borane addition inlet, an ammonia borane recovery inlet, and an ammonia borane outlet. The remaining amount of ammonia borane can be monitored using a mass sensor. Since the electrolytic recovery of ammonia borane cannot be 100% efficient, external ammonia borane needs to be added to ensure continuous hydrogen production when the remaining amount is less than or equal to a preset weight threshold.

[0039] The above technical solution purifies the impurity-containing recycled raw material output from the recovery module through a purification component to obtain recyclable recycled raw material. The recycled raw material is then stored through a storage component and transported to the hydrogen production module, thereby realizing cyclic hydrogen production and effectively improving the sustainability and economy of hydrogen production.

[0040] Alternatively, still using Figure 3 For example, the vehicle battery system 100 includes a controller 201 and a power generation component 303, which is connected to the recycling module 102. The power generation component 303 includes a photovoltaic energy storage module 3031. The photovoltaic energy storage module 3031 is used to directly convert solar energy into electrical energy and store the electrical energy. The controller 201 is used to control the photovoltaic energy storage module 3031 to supply power to the hydrogen production module 101 and the recovery module 102; The recycling module 102 is used to receive electrical energy provided by the power generation component 303 and convert the decomposition products into recycled raw materials using the electrical energy provided by the power generation component 303.

[0041] The photovoltaic energy storage module 3031 may include an external vehicle-mounted photovoltaic power generation device and a battery.

[0042] In one embodiment, the illumination conditions around the photovoltaic module can be determined using a light sensor. If the illumination conditions meet a preset photovoltaic power generation condition, the battery's SOC (State of Charge) is acquired. If the battery's SOC is less than or equal to 90%, the controller 201 controls the on-board photovoltaic power generation device to generate electricity and stores the generated electricity in the battery. If the illumination conditions do not meet the preset photovoltaic power generation condition or the battery's SOC is greater than 90%, the on-board photovoltaic power generation device is shut down.

[0043] The above technical solutions, by comprehensively considering the lighting conditions and the battery's charge level, control the start-up and shutdown of the photovoltaic energy storage module, which can effectively improve energy utilization efficiency and extend battery life.

[0044] Alternatively, still using Figure 3 For example, the fuel cell 103 system includes a controller 201, such as Figure 3 As shown, the fuel cell 103 system also includes an alarm component 304 and a controller 201, the controller 201 being connected to the alarm component 304. The controller 201 is configured to, in response to receiving a vehicle start signal, acquire the pressure value of the hydrogen production module 101, and start the hydrogen production module 101 when it is determined that the pressure value in the hydrogen production module 101 is within a preset pressure range; The controller 201 is also used to obtain the hydrogen purity in the hydrogen production module 101. If it is determined that the pressure value of the hydrogen production module 101 is not within the pressure range, or the hydrogen purity has not reached the preset purity threshold, the controller controls the alarm component 304 to issue an alarm and controls the hydrogen production module 101 to stop working.

[0045] The preset purity threshold can be 99.99% or other pre-set purity thresholds.

[0046] The above technical solution, when it is determined that the pressure value of the hydrogen production module is not within the pressure range, or the hydrogen purity does not reach the preset purity threshold, controls the alarm component to sound an alarm and controls the hydrogen production module to stop working, which can effectively improve the safety and stability of the vehicle battery system.

[0047] Optionally, the fuel cell 103 system further includes a controller 201. The controller 201 is used to obtain the first current weight of the initial raw material in the hydrogen production module 101 and the second current weight of the regenerated raw material in the recovery module 102. When it is determined that the first current weight is less than or equal to a first weight threshold and the second current weight is greater than or equal to a second weight threshold, the recovery module 102 is activated.

[0048] In one embodiment, a first current weight of the initial raw material in the hydrogen production module 101 and a second current weight of the regenerated raw material in the recovery module 102 can be obtained using a mass sensor. If the first current weight is less than or equal to a first weight threshold and the second current weight is greater than or equal to a second weight threshold, the recovery module 102 is activated. Otherwise, if the conditions are not met (the first current weight is less than or equal to the first weight threshold and the second current weight is greater than or equal to the second weight threshold), the recovery module 102 is neither activated nor deactivated.

[0049] The above technical solution can activate the recycling module 102 when the first current weight is less than or equal to the first weight threshold and the second current weight is greater than or equal to the second weight threshold, and stop or not activate the recycling module 102 when the first current weight is not less than or equal to the first weight threshold and the second current weight is greater than or equal to the second weight threshold, thereby effectively improving the safety and stability of the fuel cell 103 system.

[0050] Figure 4 It is based on Figure 1 The illustrated embodiment shows a schematic diagram of another vehicle battery system, such as Figure 4 As shown, the vehicle battery system 100 includes an ammonia borane decomposition hydrogen production device 401, a heat exchange device 402, a membrane purification device 403, a hydrogen buffer tank 404, a fuel cell module 405, a by-product electrolysis recovery device 406, an ammonia borane purification device 407, an ammonia borane storage tank 408, a photovoltaic module 409, a battery 410, a distribution box 411, a main controller 412, a circulation pump M, an electronic three-way valve ETV, an ambient temperature sensor 413, a hydrogen pressure sensor 414, a hydrogen purity sensor 415, a first mass sensor 416, a second mass sensor 417, and a light sensor 418.

[0051] During the material transfer process, NH3BH3 can be added to the ammonia boron decomposition hydrogen production unit 401 by an external system at regular intervals and in measured quantities, and NH3BH3 can also be supplied to the ammonia boron decomposition hydrogen production unit 401 by the ammonia boron storage tank 408. An ammonia boron decomposition reaction can occur in the ammonia boron decomposition hydrogen production unit 401, and the reaction principle is as follows: n NH3BH3 [-NHBH-] n +2 n H2, wherein the storage battery 410 can supply power to the ammonia borane decomposition hydrogen production unit 401, providing the heat to start the ammonia borane decomposition reaction. After the ammonia borane decomposition reaction occurs in the ammonia borane decomposition hydrogen production unit 401, a boron-ammonia polymer ([-NHBH-)) is provided to the by-product recovery unit. n The system outputs a high-temperature mixed gas, comprising H2, NH3, and BH3, to a heat exchanger 402 (e.g., an intercooler). The heat exchanger 402 can receive ambient-temperature coolant from an external system and convert the high-temperature mixed gas into a low-temperature mixed gas (H2, NH3, and BH3) and high-temperature coolant. The low-temperature mixed gas passes through a membrane purification unit 403 to obtain high-purity hydrogen and a mixture of NH3 and BH3. The membrane purification unit 403 transfers the high-purity hydrogen to the hydrogen buffer tank 404, supplying hydrogen to the fuel cell module 405. This allows the fuel cell module 405 to generate electricity through an electrochemical reaction between the hydrogen and oxygen, powering the remaining modules of the vehicle. The membrane purification unit 403 then transfers the NH3 and BH3 mixture to the byproduct electrolysis recovery unit 406. The byproduct electrolysis recovery unit 406 recovers the boron-ammonia polymer ([-NHBH-]) provided by the ammonia borane decomposition hydrogen production unit 401. n The NH3 and BH3 mixed gas provided by the membrane purification device 403 is collected and then enters the pulse electrolyzer, where it is electrolytically regenerated by power supply from the storage battery 410. The reaction principle in the byproduct electrolytic recovery device 406 is [-NHBH-]. n +3H₂O→NH₄BO₂+H₂ NH4BH4 or NH3 + BH3 + H2O → NH4BO2 NH4BH4. The byproduct electrolytic recovery device 406 transfers the generated ammonium borohydride polymer (NH4BH4) to the ammonia borane purification device 407. The ammonia borane purification device 407 dries, dehydrates, and evaporates the ammonium borohydride polymer (NH4BH4) to produce ammonia borane solid. The reaction principle within the ammonia borane purification device 407 is based on NH4BH4. NH3BH3 + H2. H2, water vapor, and other gases are then transferred back to the membrane purification unit 403 for further H2 recovery, thus improving hydrogen utilization. The ammonia borane product flows to the ammonia borane storage tank 408 for reuse.

[0052] During the coolant transfer process, the high-temperature coolant is transported to the fuel cell module 405 via the circulating pump M and the electronic three-way valve (ETV) to supply heat to the fuel cell module 405.

[0053] During the power supply process, the current generated by the photovoltaic module 409 is stored in the battery 410. The distribution box 411 supplies power to the ammonia borane decomposition hydrogen production device 401, the by-product electrolysis recovery device 406, the ammonia borane purification device 407, and the cooling circulation pump.

[0054] In photovoltaic power generation control, the illumination conditions of the surrounding environment of the vehicle-mounted photovoltaic power generation device can be monitored by a light sensor 418. If the illumination conditions meet the conditions for photovoltaic power generation, the current power level of the battery 410 is obtained. If the current power level is less than or equal to a preset power level threshold, the photovoltaic module 409 is controlled to start generating electricity. If the illumination conditions meet the conditions for photovoltaic power generation or the current power level is greater than the preset power level threshold, the photovoltaic module 409 is controlled to stop or not start generating electricity.

[0055] In the control of hydrogen production from ammonia boron decomposition, upon receiving a vehicle start signal, the pressure value of the hydrogen buffer tank 404 is obtained through the hydrogen pressure sensor 414, and the hydrogen purity of the membrane purification device 403 is obtained through the hydrogen purity sensor 415. If the pressure value of the hydrogen buffer tank 404 is determined to be within a preset pressure range, the ammonia boron decomposition hydrogen production device 401 is started. If the pressure value of the hydrogen buffer tank 404 is determined to be outside the preset pressure range, or the hydrogen purity is determined to be below 99.99%, an alarm signal is output to the vehicle, and the ammonia boron decomposition hydrogen production device 401 is simultaneously stopped.

[0056] In the cold start heat supply control, when a vehicle start signal is received, the circulation pump M is activated. With circulation pump M activated, the current temperature around the fuel cell module 405 can be obtained via ambient temperature sensor 413. If the current temperature is determined to be ≤0℃, the electronic three-way valve (ETV) is controlled to deliver high-temperature coolant to the fuel cell module 405 to heat it. If the current temperature is determined to be >0℃, the electronic three-way valve (ETV) is controlled to deliver high-temperature coolant to other modules in the vehicle for heating; details are omitted here.

[0057] In the electrolytic recovery of ammonia borane, a first target mass in the ammonia borane storage tank 408 can be obtained through a first mass sensor 416, and a second target mass in the by-product electrolytic recovery device 406 can be obtained through a second mass sensor 417. When the first target mass is determined to be ≤ a preset first mass threshold (M kg) and the second target mass is determined to be ≥ a preset second mass threshold (N kg), the ammonia borane electrolytic recovery device and purification device are started. In other cases, the electrolytic recovery of ammonia borane is not started or is stopped.

[0058] The above technical solutions enable cyclic hydrogen production, thereby effectively improving the sustainability and economy of hydrogen production. Furthermore, by supplying heat to the fuel cell, rapid start-up of the fuel cell in low-temperature environments can be achieved, thus effectively improving the environmental adaptability of the fuel cell.

[0059] Figure 5 This is a block diagram illustrating a vehicle 500 according to an exemplary embodiment, the vehicle 500 including the aforementioned vehicle battery system 100.

[0060] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0061] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0062] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A vehicle battery system, characterized by, The vehicle battery system (100) includes a hydrogen production module (101), a recovery module (102), and a fuel cell (103). The hydrogen production module (101) is connected to both the recovery module (102) and the fuel cell (103). The hydrogen production module (101) is used to obtain initial raw materials and / or recycled raw materials. After the initial raw materials and / or recycled raw materials are decomposed, hydrogen, decomposition products and heat of reaction are generated. The hydrogen and heat of reaction are transferred to the fuel cell (103), and the decomposition products are transferred to the recovery module (102). The recycling module (102) is used to receive the decomposition products provided by the hydrogen production module (101), convert the decomposition products into recycled raw materials, and transfer the recycled raw materials to the hydrogen production module (101). The vehicle battery system (100) also includes a controller (201), which is connected to the hydrogen production module (101) and the fuel cell (103) respectively. The controller (201) is configured to, in response to receiving a vehicle start signal, acquire the ambient temperature around the fuel cell (103), and, if the ambient temperature is determined to be less than or equal to a preset temperature threshold, control the hydrogen production module (101) to transfer the reaction heat generated during the decomposition of the initial raw material and / or the regenerated raw material to the fuel cell (103).

2. The vehicle battery system of claim 1, wherein, The hydrogen production module (101) includes a reaction assembly (1011) and a heat exchange assembly (1012), and the vehicle battery system (100) also includes a coolant circuit (1013). The reaction assembly (1011) includes a raw material inlet, a gaseous product outlet, a decomposition product outlet, and a reaction chamber; The heat exchange assembly (1012) includes a high-temperature gas inlet, a low-temperature gas outlet, a coolant inlet, and a coolant outlet; The inlet end of the reaction chamber is connected to the raw material inlet end, the outlet end of the reaction chamber is connected to the gas product outlet end and the decomposition product outlet end, the gas product outlet end is connected to the high temperature gas inlet end, the coolant outlet end is connected to the coolant circuit (1013), the decomposition product outlet end is connected to the recovery module (102), and the low temperature gas outlet end is connected to the fuel cell (103).

3. The vehicle battery system of claim 2, wherein, The coolant circuit (1013) includes a coolant circulation pump (104) and an electronic valve (105). The coolant outlet is connected to the inlet of the coolant circulation pump (104), one end of the electronic valve (105) is connected to the outlet of the coolant circulation pump (104), and the other end of the electronic valve (105) is connected to the fuel cell (103). The reaction assembly (1011) is used to decompose the initial raw material and / or the regenerated raw material through the reaction chamber and to provide reaction heat to the coolant circuit; The controller (201) is used to send a heating signal to the coolant circulation pump (104) and the electronic valve (105) when it is determined that the ambient temperature is less than or equal to a preset temperature threshold. The coolant circuit (1013) is used to control the operation of the coolant circulation pump (104) and the opening of the electronic valve (105) to heat the fuel cell (103) when the coolant circulation pump (104) and the electronic valve (105) receive a heating signal.

4. The vehicle battery system of claim 1, wherein, The hydrogen production module (101) further includes a purification component (301) and a storage component (302). The input end of the purification component (301) is connected to the output end of the recovery module (102), the output end of the purification component (301) is connected to the input end of the storage component (302), and the output end of the storage component (302) is connected to the input end of the hydrogen production module (101). The purification component (301) is used to purify the impurity-containing recycled raw material output by the recovery module (102) to obtain the recyclable recycled raw material; The storage component (302) is used to store the recycled raw materials and transport the recycled raw materials to the hydrogen production module (101).

5. The vehicle battery system of claim 1, wherein, The vehicle battery system (100) includes a controller (201) and a power generation component (303), which is connected to the recycling module (102). The power generation component (303) includes a photovoltaic energy storage module (3031). The photovoltaic energy storage module (3031) is used to directly convert solar energy into electrical energy and store the electrical energy. The controller (201) is used to control the photovoltaic energy storage module (3031) to supply power to the hydrogen production module (101) and the recovery module (102); The recycling module (102) is used to receive electrical energy provided by the power generation component (303) and convert the decomposition products into recycled raw materials using the electrical energy provided by the power generation component (303).

6. The vehicle battery system according to claim 1, wherein the vehicle battery system (100) includes a controller (201), characterized in that, The controller (201) is used to receive a vehicle start signal, obtain the pressure value of the hydrogen production module (101), and start the hydrogen production module (101) when it is determined that the pressure value in the hydrogen production module (101) is within a preset pressure range.

7. The vehicle battery system of claim 6, wherein, The vehicle battery system (100) also includes an alarm component (304), and the controller (201) is connected to the alarm component (304). The controller (201) is used to obtain the hydrogen purity in the hydrogen production module (101). If it is determined that the pressure value of the hydrogen production module (101) is not within the pressure range, or the hydrogen purity does not reach the preset purity threshold, the controller controls the alarm component (304) to issue an alarm and controls the hydrogen production module (101) to stop working.

8. The vehicle battery system of claim 1, wherein, The vehicle battery system (100) also includes a controller (201). The controller (201) is used to obtain the first current weight of the initial raw material in the hydrogen production module (101) and the second current weight of the regenerated raw material in the recovery module (102). When it is determined that the first current weight is less than or equal to a first weight threshold and the second current weight is greater than or equal to a second weight threshold, the recovery module (102) is started.

9. A vehicle characterized by comprising: include: The vehicle battery system (100) according to any one of claims 1-8.

Images