Electrochemical energy storage power source capable of replacing internal combustion engine

Abstract

The electrochemical energy storage power source capable of replacing the internal combustion engine comprises a cabinet body, and an electrochemical energy storage unit, an energy management system, a fire extinguishing system and an electrical system are arranged in the cabinet body. The electrochemical energy storage unit is composed of a plurality of battery modules connected in series or in parallel and a cooling liquid circulation pipeline, a temperature sensor and a voltage monitoring module are arranged in each battery module, and the cooling liquid circulation pipeline is used for heat dissipation of the battery modules; the energy management system is in communication connection with the electrochemical energy storage unit, collects temperature, voltage and SOC data of the battery module in real time, and regulates and controls charging and discharging parameters through a dynamic equalization algorithm; the fire fighting system comprises a multi-stage protection module, the multi-stage protection module is composed of an aerosol fire extinguishing device, a combustible gas detection device and a circulating fan, the fire fighting system is linked with the energy management system, and when the combustible gas detection device detects the risk of thermal runaway, the circulating fan is started preferentially for ventilation; if the temperature continuously rises, the aerosol fire extinguishing device is triggered to extinguish fire; the electrical system comprises a current conversion module, a high-voltage power distribution unit and a low-voltage control circuit, and the current conversion module is connected with the output end of the electrochemical energy storage unit and supports the power source to supply power to the outside or charge from an external power grid.

Description

TECHNICAL FIELD

[0001] The utility model relates to power source technical field, concretely relates to a kind of electrochemical energy storage power source that can replace internal combustion engine. BACKGROUND

[0002] In the vast western remote areas of our country, due to complex geographical environment, mountains and gobi desert crisscross, leading to power grid laying faces great challenge. Not only extremely high construction difficulty, and high construction cost. In addition, the population distribution in these areas is extremely sparse, and the railway traffic is relatively small. Large-scale electrified railway construction is difficult to achieve the balance between economic benefit and social benefit in the short term.

[0003] The internal transport environment of the mine industry bureau is also extremely special. The transport line inside the mine is not only complex, but also changes constantly as the mining work progresses. At the same time, the mine environment is full of dust and frequent mechanical vibration, which puts forward strict requirements on the adaptability, reliability and stability of the power source. In addition, the unique natural conditions of the plateau area also bring many problems to the power system. The air is thin and the air pressure is low in the plateau area, which makes the oxygen supply insufficient during the combustion process of the internal combustion engine, not only significantly increasing the energy consumption, but also greatly reducing the power output performance. In cold weather conditions, the start and operation of the internal combustion engine also face more difficulties. Considering the above factors, in the special working conditions of the western remote areas, the mine industry bureau and the plateau area, the internal combustion engine locomotive is still widely used.

[0004] As a traditional power traction equipment, the internal combustion engine locomotive has inherent disadvantages of fossil energy as power source. From the perspective of energy utilization, fossil energy belongs to non-renewable resources, and its reserves are gradually decreasing under the trend of continuous rise in global energy demand. The internal combustion engine locomotive consumes a lot of energy, which not only accelerates the depletion process of fossil energy, but also faces a severe energy shortage crisis. In terms of operating cost, the operating cost of the internal combustion engine locomotive is complex, in addition to the large proportion of fuel procurement cost, its mechanical structure is complex, containing many parts, which are seriously worn out during long-term high-intensity operation, and frequent maintenance and replacement of parts, which undoubtedly further increases the operating cost.

[0005] In terms of environmental protection, the internal combustion engine train emits a large amount of exhaust gas during operation. The exhaust gas contains carbon monoxide, nitrogen oxides, particulate matter and other harmful pollutants. These pollutants not only cause serious pollution to the atmospheric environment, directly endanger human health, cause respiratory diseases, cardiovascular diseases and a series of health problems, but also exacerbate global climate change, posing a serious threat to the balance and stability of the ecological system. At the same time, the high-intensity noise generated during the operation of the internal combustion engine is like a sharp noise barrier, which has a very adverse effect on the ecological environment and the quality of life of residents along the railway and around the mine.

[0006] Therefore, it is urgent to replace the internal combustion engine with a cleaner, more efficient and environmentally friendly power source. Practical new type content

[0007] Therefore, the utility model provides a kind of electrochemical energy storage power source to replace internal combustion engine to solve the above problems in prior art.

[0008] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0009] According to the first aspect of the utility model, an electrochemical energy storage power source that can replace an internal combustion engine includes a cabinet, an electrochemical energy storage unit, an energy management system, a fire extinguishing system and an electrical system are arranged in the cabinet;

[0010] The electrochemical energy storage unit is composed of a plurality of series or parallel battery modules and a cooling liquid circulation pipeline. Each battery module is provided with a temperature sensor and a voltage monitoring module. The cooling liquid circulation pipeline is used for heat dissipation of the battery module.

[0011] The energy management system is communicatively connected with the electrochemical energy storage unit, and the temperature, voltage and SOC data of the battery module are collected in real time, and the charging and discharging parameters are adjusted and controlled through a dynamic balancing algorithm.

[0012] The fire extinguishing system includes a plurality of protection modules, and the plurality of protection modules are composed of an aerosol fire extinguishing device, a combustible gas detection device and a circulating fan. The fire extinguishing system is linked with the energy management system. When the combustible gas detection device detects a thermal runaway risk, the circulating fan is started to ventilate preferentially. If the temperature continues to rise, the aerosol fire extinguishing device is triggered to extinguish the fire.

[0013] The electrical system includes a current conversion module, a high-voltage power distribution unit and a low-voltage control circuit. The current conversion module is connected with the output end of the electrochemical energy storage unit, and supports the power source to supply power externally or charge from the external power grid.

[0014] The energy management system, the fire extinguishing system and the electrical system are integrated in the same control platform to realize data interaction and collaborative control.

[0015] Further, the electrochemical energy storage unit adopts solid-state lithium battery modules, and the battery modules are replaced modularly through pluggable connectors.

[0016] Further, the cooling liquid circulation pipeline of the electrochemical energy storage unit is filled with liquid phase change material medium, and the pipeline is arranged between the battery modules to form a three-dimensional heat dissipation network.

[0017] Further, the liquid phase change material medium is a mixed medium of water and ethylene glycol in a ratio of 1:1.

[0018] Further, the flow rate of the liquid phase change material medium is 10 L / min.

[0019] Further, an active air-cooled heat dissipation structure is arranged in the high-voltage power distribution unit of the electrical system.

[0020] Further, the energy management system adopts a fuzzy control system to monitor the state of the battery modules in real time.

[0021] Further, the current conversion module is a bidirectional DCDC converter or a bidirectional ACDC converter.

[0022] The utility model has the advantages of:

[0023] The utility model integrates the electrochemical energy storage unit, the energy management system, the fire extinguishing system and the electrical system in the cabinet body, realizes data interaction and cooperative control of the systems on the same control platform, and builds a complete and coordinated power source capable of replacing the internal combustion engine, the electrochemical energy storage unit realizes energy storage, the energy management system guarantees efficient and stable operation of the battery, the fire extinguishing system provides safety protection, the electrical system supports energy conversion and distribution, and the reliability, safety and practicality of the power source are improved as a whole. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are only exemplary, and those skilled in the art can obtain other implementation drawings according to the provided drawings without creative labor.

[0025] The structure, proportion, size and the like shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not have technical substantive significance, and any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0026] Figure 1 A schematic diagram of an electrochemical energy storage power source capable of replacing an internal combustion engine provided for some embodiments of the utility model Figure 1 .

[0027] Figure 2 A schematic diagram of an electrochemical energy storage power source capable of replacing an internal combustion engine provided for some embodiments of the utility model Figure 2 .

[0028] Figure 3 An A-A sectional view of the utility model provided for some embodiments of the utility model Figure 3 .

[0029] Figure 4 A cabinet body schematic diagram provided for some embodiments of the utility model

[0030] Figure 5 A perspective view of the fixing frame provided for some embodiments of the utility model

[0031] Figure 6 A side view of the fixing frame provided for some embodiments of the utility model

[0032] Figure 7 A B-B sectional view of the utility model provided for some embodiments of the utility model Figure 6 .

[0033] Figure 8 A schematic diagram between each system provided for some embodiments of the utility model

[0034] In the figure:

[0035] 1, cabinet body; 101, fixing frame; 102, vertical beam; 103, sliding rail; 104, guide rail; 105, limiting plate; 2, electrochemical energy storage unit; 201, battery module; 202, cooling liquid circulation pipeline; 203, limiting pin; 204, circulating fan; 3, energy management system; 4, fire extinguishing system; 401, very early gas detection probe; 402, gas detector; 403, smoke detector; 404, temperature detector; 405, fire sprinkler; 5, electrical system; 501, electrical distribution cabinet; 502, electrical control box; 503, switch bus cabinet. DETAILED DESCRIPTION

[0036] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] like Figures 1 to 7 As shown, an electrochemical energy storage power source that can replace an internal combustion engine in the first aspect embodiment of this utility model includes a cabinet 1, which has a hollow structure, and an electrochemical energy storage unit 2, an energy management system 3, a fire protection system 4 and an electrical system 5 are installed inside the cabinet 1.

[0038] The electrochemical energy storage unit 2 consists of multiple battery modules 201 connected in series or parallel and a coolant circulation pipeline 202. Each battery module 201 has a built-in temperature sensor and voltage monitoring module. The coolant circulation pipeline 202 is used for heat dissipation of the battery module 201. The coolant circulation pipeline 202 adopts liquid cooling, which is an existing technology for cooling and heat dissipation of the existing battery module 201, so it will not be described in detail.

[0039] A mounting bracket 101 for placing the battery module 201 is provided inside the cabinet 1. The mounting bracket 101 is typically a cubic frame. The mounting bracket 101 includes at least two sets of parallel and spaced upright beams 102 assemblies. Each set of upright beams 102 assemblies includes at least two vertically arranged upright beams 102. The upright beams 102 mainly serve a supporting function. The upright beams 102 are made of high-strength aluminum alloy profiles. Adjacent upright beams 102 are longitudinally spaced with sliding guide devices. The sliding guide devices of the two sets of upright beams 102 assemblies are arranged in parallel to form a sliding mechanism for placing and sliding the battery module 201. The sliding guide device includes a slide rail 103 and a guide rail 104. The slide rail 103 and the guide rail 104 are combined. The slide rail 103 is fixedly connected to the upright beam 102 on one side and to the guide rail 104 on the other side. The slide rail 103 is a linear planar guide rail 104 with a hard chrome plated surface. The guide rail 104 has a groove-shaped structure. The bottom of the battery module 201 has a slider protrusion adapted to the guide rail 104. The slider protrusion is slidably disposed within the guide rail 104. At the same time, limit plates 105 are provided at both ends of the slide rail 103 to prevent the battery module 201 from derailing when sliding. A through hole is provided on the limit plate 105. A limit pin 203 is provided on the side wall of the battery module 201 near the outermost end of the limit plate 105. The limit pin 203 is located in the through hole to prevent the battery module 201 from shifting. In addition, a PTFE slider is installed above the guide rail 104 to reduce the friction with the bottom of the battery module 201 and facilitate the installation of the battery module 201.

[0040] The energy management system 3 is in communication connection with the electrochemical energy storage unit 2, and the energy management system 3 usually adopts a fuzzy control system to monitor the state of the battery module 201 in real time, such as collecting the temperature, voltage and SOC data of the battery module 201 in real time, and adjusting and controlling the charging and discharging parameters through a dynamic balancing algorithm.

[0041] The fire-fighting system 4 comprises a multi-stage protection module composed of an aerosol fire extinguishing device, a combustible gas detection device and a circulating fan 204, and the fire-fighting system 4 is linked with the energy management system 3, so that when the combustible gas detection device detects a thermal runaway risk, the circulating fan 204 is preferentially started to ventilate, and if the temperature continues to rise, the aerosol fire extinguishing device is triggered to extinguish the fire; the combustible gas detection device comprises an early gas detector 401, a gas detector 402, a smoke detector 403 and a temperature detector 404; when the early gas detector and the gas detector 402 are detected to alarm, the circulating fan 204 is started to ventilate; when the smoke detector 403 and the temperature detector 404 are detected to alarm, the fire-fighting nozzles 405 of the aerosol fire extinguishing device are triggered to spray and extinguish the fire in the cabinet, to isolate air and suppress combustion. The multi-stage protection module of the fire-fighting system 4 is linked with the energy management system 3, so that the thermal runaway risk can be found and handled in time, and the safe operation of the power source is ensured.

[0042] The electrical system 5 comprises a current conversion module, a high-voltage power distribution unit and a low-voltage control circuit, the current conversion module is connected with the output end of the electrochemical energy storage unit 2, supports the power source to supply power to the outside or charge from the external power grid; wherein the current conversion module is a bidirectional DCDC converter or a bidirectional ACDC converter. Meanwhile, the electrical system 5 further comprises an electrical power distribution cabinet 501, an electrical control box 502 and a switch bus cabinet 503. The electrical power distribution cabinet 501 provides power support for the energy management system 3 and the fire-fighting system 4, the electrical control box 502 is installed on a fixed rack, and the electrical protection unit contained therein, such as fuses of different current levels and automatically segmented disconnecting switches, provides electrical protection for the electrochemical energy storage unit 2; the switch bus cabinet 503 is installed in the cabinet and can control the disconnection of the direct-current power supply.

[0043] The energy management system 3, the fire-fighting system 4 and the electrical system 5 are integrated in the same control platform to realize data interaction and collaborative control.

[0044] The electrochemical energy storage unit 2 adopts solid-state lithium battery modules 201, and the battery modules 201 are replaced in a modular manner through pluggable connectors, wherein the solid-state lithium battery modules 201 adopt lithium iron phosphate and lithium titanate batteries, the energy density reaches more than 500 Wh / kg, and the cycle life exceeds 5000 times; compared with the traditional battery modules 201, the solid-state lithium battery modules 201 have higher energy density, better safety and longer service life; the battery modules 201 are replaced in a modular manner through pluggable connectors, which facilitates the later maintenance and upgrading, reduces the maintenance cost, and improves the maintainability and flexibility of the power source.

[0045] The cooling liquid circulation pipeline 202 of the electrochemical energy storage unit 2 is filled with liquid phase change material medium, the cooling liquid circulation pipeline 202 is filled with liquid phase change material medium, and the heat generated by the battery modules 201 can be more efficiently absorbed by using the phase change heat absorption characteristics thereof; the pipeline is arranged between the battery modules 201 to form a three-dimensional heat dissipation network, which covers the battery modules 201 in all directions, enhances the heat dissipation effect, effectively controls the temperature of the battery modules 201, ensures that the battery modules 201 work in an appropriate temperature range, and improves the performance and service life of the battery. The liquid phase change material medium is a mixture of water and ethylene glycol in a ratio of 1:1, and the flow rate of the liquid phase change material medium is 10 L / min, which ensures that the cooling liquid can circulate at an appropriate speed, ensures the heat dissipation effect, avoids affecting the heat dissipation efficiency and system energy consumption due to excessive or insufficient flow rate, and balances the heat dissipation performance and energy consumption.

[0046] The high-voltage power distribution unit of the electrical system 5 is provided with an active air-cooled heat dissipation structure, which can timely dissipate the heat generated by the high-voltage power distribution unit during operation, prevent the electrical elements from being damaged due to overheating, and ensure the normal operation of the high-voltage power distribution unit and the stability of the electrical system 5.

[0047] The utility model discloses a cabinet body 1 is integrated electrochemical energy storage unit 2, energy management system 3, fire fighting system 4 and electrical system 5, and realizes the data interaction and collaborative control of each system in the same control platform, and constructs a complete function and the coordinated operation power source that can replace internal combustion engine, and electrochemical energy storage unit 2 realizes energy storage, and energy management system 3 guarantees that the battery is operated efficiently and stably, and fire fighting system 4 provides safety protection, and electrical system 5 supports energy conversion and distribution, and the reliability, safety and practicality of power source are improved as a whole. Meanwhile, compared with the complex mechanical structure of internal combustion engine, the maintenance work of the power source is more convenient, the replacement cost of parts is reduced, and the overall operation cost is reduced. The power source does not produce exhaust emission during operation, fundamentally solves the problems of exhaust emission of internal combustion engine, harm to human health and aggravation of global climate change. And, compared with internal combustion engine, the operation noise is greatly reduced, and the adverse effects on the surrounding ecological environment and the quality of life of residents are reduced.

[0048] Although the utility model has been described in detail above with general description and specific embodiments, some modifications or improvements can be made on the basis of the utility model, which is obvious to those skilled in the art. Therefore, these modifications or improvements made on the basis of not deviating from the spirit of the utility model, all belong to the scope of the utility model claimed.

[0049] The terms such as "upper", "lower", "left", "right", "middle" and the like cited in the specification are only for the convenience of clear description, and are not used to limit the scope of the utility model that can be implemented. The change or adjustment of the relative relationship is also considered as the scope of the utility model that can be implemented without substantial change of the technical content.

Claims

1. An electrochemical energy storage power source that can replace an internal combustion engine, comprising a cabinet (1), characterized in that, The cabinet (1) is equipped with an electrochemical energy storage unit (2), an energy management system (3), a fire protection system (4), and an electrical system (5); The electrochemical energy storage unit (2) consists of multiple battery modules (201) connected in series or in parallel and a coolant circulation pipeline (202). Each battery module (201) has a built-in temperature sensor and voltage monitoring module. The coolant circulation pipeline (202) is used for heat dissipation of the battery module (201). The energy management system (3) is connected to the electrochemical energy storage unit (2) in communication, and collects the temperature, voltage and SOC data of the battery module (201) in real time, and adjusts the charging and discharging parameters through a dynamic equalization algorithm; The fire protection system (4) includes a multi-level protection module, which consists of an aerosol fire extinguishing device, a combustible gas detection device, and a circulating fan (204). The fire protection system (4) is linked with the energy management system (3). When the combustible gas detection device detects the risk of thermal runaway, it will first start the circulating fan (204) for ventilation. If the temperature continues to rise, it will trigger the aerosol fire extinguishing device to extinguish the fire. The electrical system (5) includes a current conversion module, a high-voltage power distribution unit and a low-voltage control circuit. The current conversion module is connected to the output terminal of the electrochemical energy storage unit (2) to support the power source to supply power to the outside or to charge from the external power grid. The energy management system (3), fire protection system (4) and electrical system (5) are integrated on the same control platform to realize data interaction and collaborative control.

2. An electrochemical energy storage power source to replace an internal combustion engine as claimed in claim 1, wherein, The electrochemical energy storage unit (2) adopts a solid-state lithium battery module (201), and the battery modules (201) can be modularly replaced through pluggable connectors.

3. An electrochemical energy storage power source to replace internal combustion engines as claimed in claim 1, wherein, The coolant circulation pipe (202) of the electrochemical energy storage unit (2) is filled with a liquid phase change material medium, and the pipe is arranged between the battery modules (201) to form a three-dimensional heat dissipation network.

4. An electrochemical energy storage power source to replace an internal combustion engine as claimed in claim 3, wherein, The liquid phase change material medium is a mixture of water and ethylene glycol in a 1:1 ratio.

5. An electrochemical energy storage power source to replace an internal combustion engine as claimed in claim 4, wherein, The flow rate of the liquid phase change material medium is 10 L / min.

6. An electrochemical energy storage power source to replace internal combustion engines as recited in claim 1, wherein, An active air-cooled heat dissipation structure is installed in the high-voltage power distribution unit of the electrical system (5).

7. An electrochemical energy storage power source to replace internal combustion engines as recited in claim 1, wherein, The energy management system (3) adopts a fuzzy control system to monitor the status of the battery module (201) in real time.

8. The electrochemical energy storage power source that can replace an internal combustion engine according to claim 1, characterized in that, The current conversion module is a bidirectional DC-DC converter or a bidirectional AC-DC converter.

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