Energy storage system of vehicle battery

Abstract

The utility model discloses an energy storage system of a vehicle battery, which comprises a box body, and a battery cabin, a control cabin and an equipment placement area which are arranged in the box body. At least one battery charging assembly is arranged in the battery compartment and comprises a plurality of charging parts used for charging batteries, a water injection assembly is installed at the position, close to the battery compartment, of the outer portion of the box body, and a water injection opening of the water injection assembly is communicated with a battery compartment pipeline. The electric energy management assembly is in communication connection with the water injection assembly; when a single battery is replaced, only a circuit of a charging part of the battery needing to be replaced needs to be temporarily disconnected, other batteries which are being charged are not affected, and the effects of rapidness, convenience and high efficiency are achieved; moreover, when the battery is suddenly deflagrated under some reasons, the electric energy management assembly can control the water injection assembly to inject water into the battery compartment, so that a fire source is quickly eliminated, and the safety of the whole energy storage system is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery energy storage equipment technical field especially, relates to a kind of energy storage system of battery for vehicle. BACKGROUND

[0002] Electric energy refers to the ability to use electricity in various forms to do work. Electric energy is an economic, practical, clean and easy to control and convert energy form, widely used in power, lighting, automotive and other fields, is the main driving force of scientific and technological development, the leap of national economy.

[0003] Therefore, with the wide application of electric energy, more and more cars begin to apply electric energy, with the growth of electric vehicle usage, to solve the endurance problem of electric vehicles, more and more electric vehicle manufacturers begin to solve customers' endurance anxiety by replacing battery for vehicle.

[0004] Therefore, more and more battery swap stations appear to solve people's endurance anxiety of battery for vehicle. Generally, battery swap station will set up battery energy storage system to charge battery for vehicle and provide customers with sufficient battery for vehicle. However, due to the rapid increase of battery temperature during rapid charging, the battery has the risk of spontaneous combustion. Therefore, the battery energy storage system in the prior art generally sets up a cooling system to cool the battery at all times to reduce the risk of spontaneous combustion. However, in some special cases, for example, due to internal short circuit of battery during charging, it will suddenly explode, so the cooling system will not play a role in extinguishing the fire. Therefore, the battery energy storage system in the prior art has the problem that the battery cannot eliminate the fire source in time in the case of sudden explosion, thereby affecting the overall safety of the battery energy storage system. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problem that the battery energy storage system in the prior art cannot eliminate the fire source in time in the case of sudden explosion, thereby affecting the overall safety of the battery energy storage system.

[0006] To solve the above problems, the utility model provides a kind of energy storage system of battery for vehicle, when battery suddenly explodes under some reasons (such as short-circuit protection failure, overcharge protection failure, etc.), electric energy management component can control water injection component to inject water into battery cabin, quickly eliminate fire source, ensure the safety of the whole energy storage system, avoid the risk of other batteries being ignited during charging.

[0007] The energy storage system of the vehicle battery provided by the utility model solves the above problems by adopting the technical scheme that the energy storage system of the vehicle battery comprises a box body, a battery cabin, a control cabin and an equipment placing area which are arranged in the accommodating space of the box body, at least one battery charging assembly and a placing rack which are arranged in the battery cabin and which are used for defining battery placing spaces in parallel or in layers, the battery charging assembly comprises a plurality of charging components which are distributed and adapted to the battery placing spaces, a water injection assembly is arranged on the outside of the box body and close to the battery cabin, a water injection port of the water injection assembly is communicated with the pipeline in the box body, and a water inlet port is communicated with an external water pipe, the control cabin is provided with an electric energy management assembly and an energy storage converter assembly, a plurality of energy storage converter modules are arranged in the protective box of the energy storage converter assembly at intervals, the plurality of energy storage converter modules are in one-to-one correspondence with and electrically connected to the charging interfaces of the plurality of charging components, the electric energy management assembly is respectively in communication connection with the low-voltage communication interfaces of the plurality of charging components and is respectively in communication connection with the plurality of energy storage converter modules, and the electric energy management assembly is also in communication connection with the water injection assembly; when the battery is placed on the charging components for charging, the charging connector and the low-voltage communication connector of the battery are respectively plugged into the charging interfaces and the low-voltage communication interfaces in one-to-one correspondence, and when the battery suddenly explodes in the charging process due to some reasons (for example, short-circuit protection failure, over-discharge protection failure, etc.), the electric energy management assembly can control the water injection assembly to inject water into the battery cabin, so that the fire source is quickly eliminated and the safety of the entire energy storage system is ensured.

[0008] Further, the equipment placing area is further provided with a cooling assembly, cooling pipelines of the cooling assembly are respectively communicated with cooling interfaces of the plurality of charging components, and the cooling assembly is also in communication connection with the electric energy management assembly; when the battery is placed on the charging components for charging, a cooling liquid inlet connector of the battery is plugged into the cooling interface on the charging components, and the battery placed on the charging components can be cooled by the cooling assembly during charging, so that the battery is prevented from self-ignition due to high temperature.

[0009] Further, the charging components comprise a battery placing box and a roller which is arranged on a side wall of the battery placing box and faces an inner wall of the battery placing space, the inner wall of the battery placing space is provided with a guide rail which is adapted to the roller; and the battery placing box is further provided with a fixing member which is used for fixing the battery placing box and the battery; wherein the charging interfaces, the cooling interfaces and the low-voltage communication interfaces are arranged on the side wall of the battery placing box. The battery charging assembly further comprises a plurality of low-voltage cables and a plurality of high-voltage cables, one end of the plurality of low-voltage cables is in one-to-one correspondence with and electrically connected to the low-voltage communication interfaces of the plurality of charging components, and the other end of the plurality of low-voltage cables is connected to the electric energy management assembly; one end of the plurality of high-voltage cables is in one-to-one correspondence with and electrically connected to the charging interfaces of the plurality of charging components, and the other end of the plurality of high-voltage cables is in one-to-one correspondence with and electrically connected to the plurality of energy storage converter modules.

[0010] Further, when the battery with low power is charged by the energy storage system, the empty battery placing box is quickly pulled out from the battery placing space through the cooperation of the rollers and the guide rails, then the battery is placed in the battery placing box, and the charging connector, the low-voltage communication connector and the cooling liquid inlet connector of the battery are respectively and one-to-one plugged into the charging interface, the low-voltage communication interface and the cooling interface on the battery placing box, then the battery placing box is pushed into the battery placing space, and the auxiliary cooling pipe of the cooling assembly is connected with the cooling interface, the low-voltage cable is connected with the low-voltage communication interface, and the high-voltage cable is connected with the charging interface, and then the energy management assembly controls the energy storage and conversion assembly to charge the battery.

[0011] Further, when the battery is fully charged and the charging is completed, the energy management assembly controls the energy storage and conversion assembly to stop charging the battery, disconnects the auxiliary cooling pipe of the cooling assembly from the cooling interface, disconnects the low-voltage cable from the low-voltage communication interface, and disconnects the high-voltage cable from the charging interface, at this time, the external auxiliary cooling pipe, the low-voltage cable and the high-voltage cable of the battery placing box are all removed, the fixing member connecting the battery placing box and the battery placing space is removed, then the battery placing box with the fully charged battery is quickly pulled out from the battery placing space through the cooperation of the rollers and the guide rails, finally, the charging connector, the low-voltage communication connector and the cooling liquid inlet connector on the fully charged battery are respectively and one-to-one disconnected from the charging interface, the low-voltage communication interface and the cooling interface on the battery placing box, the fully charged battery is removed, and is provided for the vehicle needing to replace the battery; the battery with insufficient power removed from the vehicle is placed in the battery placing box again, and the foregoing charging steps are repeated to charge the new battery with insufficient power; and, the charging state of the battery in each battery placing box can be controlled by the energy management assembly controlling the energy storage and conversion assembly, so that when a single battery is replaced, only the circuit of the battery placing cabin needing to replace the battery needs to be disconnected for a short time, and other batteries placed in the battery placing box and being charged will not be affected; therefore, the energy storage system has the effects of quickness, convenience and high efficiency for the operation of replacing the battery.

[0012] An embodiment of the energy storage system of the vehicle battery, in order to improve the fire extinguishing effect and reliability of the water injection assembly, so that it can inject water into the battery compartment and the single charging component, the technical scheme adopted is that the water injection assembly is located on the side of the box away from the control compartment, including a water injection pipe; wherein the water injection pipe is fixedly installed on the outer side wall of one side of the box, one end of the water injection pipe is a water inlet communicated with the external water pipe, the other end of the water injection pipe extends into the box through the side wall of the box and is a water injection port; wherein one end of the water injection pipe is provided with an automatic water inlet pipe and a manual water inlet pipe connected in parallel with the water inlet, the manual water inlet pipe is provided with a manual valve, the automatic water inlet pipe is provided with an electronic valve, and the electronic valve is in communication connection with the electric energy management assembly; and the water injection port at the other end of the water injection pipe includes a first water injection port and a plurality of second water injection ports arranged in parallel, wherein the first water injection port extends into the battery compartment, and the plurality of second water injection ports correspond to the plurality of battery placement spaces one by one and extend into the battery placement spaces.

[0013] An embodiment of the energy storage system of the vehicle battery, when the connecting line in the battery compartment and the control compartment catches fire, in order to quickly eliminate the fire source; the technical scheme adopted is that the energy storage system further comprises a fire extinguishing assembly, the fire extinguishing assembly comprises a fire extinguishing component and a plurality of smoke temperature detectors, wherein the fire extinguishing component is arranged in the control compartment, the plurality of smoke temperature detectors are arranged in the battery compartment and the control compartment respectively, and the fire extinguishing component is in pipeline communication with the battery compartment and the control compartment.

[0014] An embodiment of the energy storage system of the vehicle battery, the fire extinguishing component comprises a fire extinguishing cabinet, a controller and a gas tank, a main gas pipe and a plurality of branch gas pipes, wherein the fire extinguishing cabinet is installed in the control compartment, the gas tank is installed inside the fire extinguishing cabinet, one end of the main gas pipe is in communication with the gas tank, the other end of the main gas pipe extends out to the control room through the side wall of the fire extinguishing cabinet, one end of the plurality of branch gas pipes is in communication with the other end of the main gas pipe, and the other end of the plurality of branch gas pipes extends into the control room and the battery compartment respectively, and the controller is in electrical connection with the gas tank and the plurality of smoke temperature detectors.

[0015] An embodiment of the energy storage system of the vehicle battery, the cooling assembly comprises a cooling component installed in the equipment placement area, a main cooling pipe, and a plurality of auxiliary cooling pipes corresponding to and communicated with the cooling interfaces of the plurality of charging components, wherein one end of the main cooling pipe is in communication with the cooling component, the other end of the main cooling pipe extends into the battery compartment, one end of the plurality of auxiliary cooling pipes is in communication with one end of the main cooling pipe, and the other end of the plurality of auxiliary cooling pipes extends to be in communication with the cooling interface of the corresponding charging component respectively.

[0016] An embodiment of the energy storage system of the vehicle battery, further comprising a power distribution assembly arranged in the equipment placement area, the power distribution assembly comprises a power distribution box and a cooling fan, the power distribution assembly is installed in the equipment placement area and is in electrical connection with the electric energy management assembly, the cooling assembly, the energy storage converter assembly and the fire extinguishing assembly, and the cooling fan is fixedly installed on the side wall of the power distribution box.

[0017] One embodiment of the energy storage system of the vehicle battery, the battery charging assembly further comprises a high-voltage installation bridge and a low-voltage installation bridge, the low-voltage installation bridge and the high-voltage installation bridge are installed on the side wall of the battery cabin, and the plurality of low-voltage cables are fixedly installed on the low-voltage installation bridge.

[0018] One embodiment of the energy storage system of the vehicle battery, the side wall of the box body is further provided with a pressure relief valve and an exhaust valve, and the pressure relief valve and the exhaust valve are communicated with the battery cabin through the side wall of the box body.

[0019] In summary, the energy storage system of the vehicle battery has the following beneficial effects: when the battery is placed on the charging part for charging, the battery is connected with the charging interface, the low-voltage communication interface and the cooling interface respectively, when the battery suddenly explodes in the charging process due to some reasons (for example, short-circuit protection failure, over-discharge protection failure, etc.), the water injection assembly can control the water injection assembly to inject water into the battery cabin to quickly eliminate the fire source, when the connecting lines in the battery cabin and the control cabin catch fire, the fire source can be quickly killed by the fire-fighting part, and the safety of the entire energy storage system is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The first perspective view of the energy storage system of the vehicle battery is provided for the embodiment of the utility model.

[0021] Figure 2 The second perspective view of the energy storage system of the vehicle battery is provided for the embodiment of the utility model.

[0022] Figure 3 The third perspective view of the energy storage system of the vehicle battery is provided for the embodiment of the utility model.

[0023] Figure 4 The fourth perspective view of the energy storage system of the vehicle battery is provided for the embodiment of the utility model.

[0024] Figure 5 The connection diagram of part of the structure of the energy storage system of the vehicle battery is provided for the embodiment of the utility model.

[0025] Explanation of reference signs:

[0026] 1, the energy storage system of the vehicle battery;

[0027] 10, the box body;

[0028] 100, the pressure relief valve; 101, the exhaust valve;

[0029] 11, the battery cabin;

[0030] 110, placing rack;

[0031] 1101, battery placing space; 1102, guide rail;

[0032] 12, control cabin;

[0033] 13, equipment placing area;

[0034] 14, battery charging assembly;

[0035] 140, charging component; 141, battery placing box; 142, roller; 143, fixing piece; 144, low-voltage installation bridge; 145, high-voltage installation bridge;

[0036] 15, water injection assembly;

[0037] 150, water injection pipe; 151, manual water inlet pipeline; 152, automatic water inlet pipeline; 153, manual valve; 154, electronic valve;

[0038] 16, cooling assembly;

[0039] 160, cooling component; 161, main cooling pipe; 162, auxiliary cooling pipe;

[0040] 17, fire-fighting assembly;

[0041] 170, fire-fighting component; 171, smoke temperature detector; 172, fire-fighting cabinet; 173, main gas pipe; 174, branch gas pipe;

[0042] 18, power distribution assembly;

[0043] 180, power distribution box; 181, heat dissipation fan;

[0044] 19, electric energy management assembly;

[0045] 20, energy storage and conversion assembly;

[0046] 200, energy storage and conversion module. DETAILED DESCRIPTION

[0047] New energy automobile refers to an automobile that uses unconventional vehicle fuel as power source, or uses conventional vehicle fuel, adopts new type of vehicle power device, and forms advanced technical principle, new technology and new structure of automobile by combining advanced technology of vehicle power control and driving.

[0048] New energy vehicles mainly include: pure electric vehicles which are completely dependent on battery power and driven by electric motor, and hybrid power vehicles which are equipped with both thermal power source (such as traditional gasoline engine or diesel engine) and electric power source (battery and electric motor). As can be seen, the charging endurance mileage of the new energy vehicle of the prior art has become a hot spot of people's attention. In order to solve the endurance problem of electric vehicles, more and more electric vehicle manufacturers begin to use the way of replacing vehicle batteries to solve customers' endurance anxiety.

[0049] Therefore, more and more battery swap stations appear to solve people's endurance anxiety of using vehicle batteries. Generally, the battery swap station will set a battery energy storage system to charge the vehicle battery and provide the customer with a vehicle battery with sufficient power in time. However, since the temperature of the battery is easy to rise rapidly during the process of rapid charging, the battery has the risk of spontaneous combustion. Therefore, the vehicle battery energy storage system in the prior art generally sets a cooling system to cool the battery at all times to reduce the risk of spontaneous combustion. However, in some special cases, for example, due to the failure of internal short circuit protection of the battery during charging, the battery will suddenly explode, and the cooling system will not play a role in extinguishing the fire. Therefore, the battery energy storage system in the prior art has the problem that it cannot eliminate the fire source in time when the battery suddenly explodes, thereby affecting the overall safety of the battery energy storage system.

[0050] In order to solve the above problems, the utility model provides a kind of vehicle battery's energy storage system comprising: box, and the battery cabin, control cabin and equipment placement area being set in box. At least one battery charging assembly is provided in battery cabin, and battery charging assembly includes a plurality of charging components for charging battery, and water injection assembly is installed outside box near battery cabin, and the water injection port of water injection assembly is communicated with box, and electric energy management assembly and energy storage converter assembly are installed in control cabin, and electric energy management assembly is connected with water injection assembly;When battery suddenly explodes under some reasons (for example, short circuit), electric energy management assembly can control water injection assembly to inject water into battery cabin, quickly eliminate fire source, and ensure the safety of entire energy storage system.

[0051] In order to make the purpose, technical scheme and advantages of the utility model more clear, the embodiments of the utility model will be described in further detail below with reference to the drawings.

[0052] As shown in Figure 1 and Figure 2 , first, the overall structure of the vehicle battery energy storage system 1 provided by the embodiment is described.

[0053] The energy storage system 1 for this vehicle battery includes a housing 10, and a battery compartment 11, a control compartment 12, and an equipment placement area 13 disposed within the housing space of the housing 10. With this arrangement, the housing 10 can protect the components disposed within the battery compartment 11, the control compartment 12, and the equipment placement area 13.

[0054] Furthermore, in order to enable the energy storage system 1 of the vehicle battery to charge multiple batteries simultaneously, and to transport the energy storage system to a designated location to replace batteries in multiple vehicles or to replace multiple batteries in one vehicle; the battery compartment 11 is provided with at least one battery charging assembly 14 and a rack 110 that defines battery placement spaces 1101 side by side or stacked, and the battery charging assembly 14 includes multiple battery placement spaces 1101 ( Figure 4 (As shown in the diagram) Multiple charging components 140 are distributed and adapted; when multiple batteries need to be charged, the batteries can be placed on the charging components 140 for charging. It should be understood that at least one battery charging component 14 can be one, two, three, etc., as in this embodiment. Figure 1 The diagram shows two battery charging components 14. It should be understood that the number of charging components 140 can be 6, 8, 9, etc.; the number of battery placement spaces 1101 can be 7, 8, 10, etc., and the number of battery placement spaces 1101 should be equal to or greater than the number of charging components 140.

[0055] Furthermore, a water injection assembly 15 is installed on the outside of the enclosure 10 near the battery compartment 11. The water inlet of the water injection assembly 15 is connected to the internal pipeline of the enclosure 10, and the water outlet is connected to the external water pipe. An energy management assembly 19 and an energy storage converter assembly 20 are installed inside the control compartment 12. Multiple energy storage converter modules 200 are spaced apart inside the protective enclosure of the energy storage converter assembly 20. Figure 5 As shown in the diagram, multiple energy storage converter modules 200 and multiple charging components 140 have corresponding and electrically connected charging interfaces. The power management component 19 is connected to the low-voltage communication interfaces of the multiple charging components 140, and is also connected to the water injection component 15. When the battery is placed on the charging component 140 for charging, the battery's charging connector and low-voltage communication connector are plugged into the charging interface and low-voltage communication interface respectively. If the battery suddenly explodes during charging due to some reasons (such as short circuit protection failure, over-discharge protection failure, etc.), the power management component 19 can control the water injection component 15 to inject water into the battery compartment 11 to quickly extinguish the fire source and ensure the safety of the entire energy storage system.

[0056] Further, the device placing area 13 is also provided with a cooling assembly 16, cooling pipelines of the cooling assembly 16 are respectively communicated with cooling interfaces of the plurality of charging components 140, and the cooling assembly 16 is also communicatively connected with the electric energy management assembly 19; when the battery is placed on the charging component 140 for charging, the cooling liquid connector of the battery is plugged with the cooling interface on the charging component 140, so that the cooling liquid in the cooling assembly 140 can flow into the cooling flow channel of the charging battery, realizing the cooling of the battery placed on the charging component 140 by the cooling assembly 16 during charging, reducing the risk of self-ignition due to excessively high temperature.

[0057] Further, after the battery charging is completed, the charging connector, the low-voltage communication connector and the cooling liquid inlet connector on the charged battery are respectively unplugged from the charging interface, the low-voltage communication interface and the cooling interface of the charging component 140 one by one, and then the charging connector, the low-voltage communication connector and the cooling liquid inlet connector of the next battery are respectively plugged with the charging interface, the low-voltage communication interface and the cooling interface of the charging component 140 one by one, so as to realize the quick replacement of the battery, and further make the energy storage system have the advantage of high applicability.

[0058] It should be understood that the box body 10 can be a rectangular box body 10 surrounded by a rectangular plate and a mounting frame as shown in Figure 1 , or a box surrounded by a plurality of mounting plates, the box being provided with a flip cover, the relevant structural members being installed into the storage space of the box by opening the flip cover, and the battery being placed on the charging component 140.

[0059] It should be further understood that the electric energy management assembly 19 can be an energy management controller, an electronic control unit, etc., which is not limited in the embodiment. The energy storage converter assembly 20 can be an energy storage converter, an inverter, etc., which is not limited in the embodiment; the energy storage converter assembly 20 shown in the embodiment is an energy storage converter, which has a protection box, and a plurality of energy storage converter modules 200 are arranged in the protection box. The number of the plurality of energy storage converter modules 200 can be 2, 5, 8, etc. Figure 5

[0060] The structure and arrangement mode of the water injection assembly 15 are further described below.

[0061] In an implementable embodiment, as Figure 2 and Figure 3 ​As shown, the water injection assembly 15 is located on the side of the box body 10 away from the control cabin 12, and includes a water injection pipe 150. One end of the water injection pipe 150 is fixedly installed on the outer side wall of the box body 10, and the other end of the water injection pipe 150 is an injection port extending into the box body 10 through the side wall of the box body 10. The injection port at the other end of the water injection pipe 150 includes a first injection port and a plurality of second injection ports arranged in parallel. The first injection port extends into the battery cabin 11, and the plurality of second injection ports correspond to the plurality of battery placement spaces 1101 and extend into the battery placement spaces 1101. When the battery suddenly explodes during charging due to some reasons (such as short-circuit protection failure, over-discharge protection failure, etc.), the power management assembly 19 can control the water injection assembly 15 to inject water into the battery cabin 11 through the water injection pipe 150. The water flow can quickly reach the battery cabin 11 through the first injection port and quickly reach the plurality of battery placement spaces 1101 through the plurality of second injection ports, thereby quickly eliminating the fire source and ensuring the safety of the entire energy storage system.

[0062] Optionally, in an implementable embodiment, to ensure the reliability of the water injection assembly 15, one end of the water injection pipe 150 is provided with an automatic water inlet pipe 152 and a manual water inlet pipe 151 connected in parallel to the water inlet port. The manual water inlet pipe 151 is provided with a manual valve 153, and the automatic water inlet pipe 152 is provided with an electronic valve 154. The electronic valve 154 is in communication connection with the power management assembly 19. When the battery suddenly explodes during charging due to some reasons (such as short-circuit protection failure, over-discharge protection failure, etc.), the power management assembly 19 can control the electronic valve 154 to open, and water flow is introduced into the water injection pipe 150 through the automatic water inlet pipe 152 to achieve fire extinguishing. When the electronic valve fails, the manual valve 153 can be manually opened to introduce water flow into the water injection pipe 150 through the manual water inlet pipe 151 to achieve fire extinguishing.

[0063] Optionally, in an implementable embodiment, to avoid the water injection assembly 15 injecting water into each battery placement space 1101 of the battery cabin 11 when a single battery catches fire, thereby damaging the unburned batteries, a temperature sensor can be arranged in each of the plurality of battery placement spaces 1101, and the temperature sensor is in electrical connection with the power management assembly 19. An electromagnetic valve is arranged at the first injection port and the plurality of second injection ports, and the electromagnetic valve is in electrical connection with the power management assembly 19. When a single battery catches fire, the temperature sensor in the battery placement space 1101 where the battery is located can feed back the fire information to the power management assembly 19. The power management assembly 19 can control the electromagnetic valve at the second injection port corresponding to the battery placement space 1101 where the burning battery is placed to open and inject water into the inside for fire extinguishing.

[0064] Optionally, when the battery suddenly explodes in the charging process due to some reasons (for example, short circuit protection failure, over-discharge protection failure, etc.), the water injection assembly 15 will extinguish the battery after the battery is extinguished. The water storage in the battery compartment 11 can be quickly discharged, and the side wall of the box body 10 is also provided with a pressure relief valve 100 which communicates with the battery compartment 11 through the side wall of the box body 10, so as to achieve the purpose of convenient drainage.

[0065] As shown in Figure 1 and Figure 2 , the structure and arrangement of the cooling assembly 16 are further described below.

[0066] In an implementable embodiment, the cooling assembly 16 includes a cooling component 160 installed on the device placement area 13, a main cooling pipe 161, and a plurality of sub-cooling pipes corresponding to and communicating with the cooling interfaces of the plurality of charging components 140. One end of the main cooling pipe 161 communicates with the cooling component 160, and the other end extends into the battery compartment 11. One end of each of the plurality of sub-cooling pipes communicates with one end of the main cooling pipe 161, and the other end extends to communicate with the cooling interface of the corresponding charging component 140.

[0067] Specifically, when the battery is placed on the charging component 140 for charging, the cooling connection port on the battery can be communicated with the cooling interface on the charging component 140, and then the cooling component 160 supplies cooling liquid into the main cooling pipe 161. The cooling liquid flows to the cooling interface of the corresponding and working charging component 140 through the sub-cooling pipe, and then enters the cooling flow channel on the battery being charged, to cool the battery, reduce the temperature of the battery, and avoid the risk of burning due to high temperature during charging.

[0068] Specifically, the cooling component 160 can be a cooling pump, a cooler, a water cooler, etc., which is not limited in the present embodiment.

[0069] As shown in Figure 1 and Figure 4 , the structure and arrangement of the placement rack 110 and the battery charging assembly 14 are further described below.

[0070] The placement rack 110 is provided with a plurality of battery placement spaces 1101 arranged side by side or stacked, and the battery charging assembly 14 includes a plurality of charging components 140. The plurality of battery placement spaces 1101 correspond to the plurality of charging components 140 one by one, and the plurality of charging components 140 are respectively placed in the plurality of battery placement spaces 1101 and are in sliding connection with the side walls of the battery placement spaces 1101.

[0071] As shown in Figure 4As shown, in an implementable embodiment, the charging component 140 comprises a battery placing box 141 and a roller 142 arranged on the side wall of the battery placing box 141 towards the inner wall of the battery placing space 1101, and a guide rail 1102 matched with the roller 142 is arranged on the inner wall of the battery placing space 1101, so as to realize the sliding connection of the battery placing box 141 and the battery placing space 1101. When the battery needs to be charged, the battery placing box 141 only needs to be slid open, thereby increasing the convenience of operation when the battery is charged. In addition, the battery placing box 141 is also provided with a fixing piece 143 for fixing the battery placing box 141 and the battery. When the battery is charged, the battery and the battery placing box 141 can be fixed with each other, thereby avoiding the problem of sliding in the battery placing box 141 due to different sizes of batteries when charging. It needs to be understood that the charging interface, the cooling interface and the low-voltage communication interface are arranged on the side wall of the battery placing box 141.

[0072] Specifically, the structure of the fixing piece 143 is not limited, for example, a fixing ear, a fixing buckle, etc.

[0073] As shown, Figure 1 As shown, in an implementable embodiment, the battery charging assembly 14 further comprises a plurality of low-voltage cables and a plurality of high-voltage cables. One end of the plurality of low-voltage cables corresponds to and is electrically connected to the low-voltage communication interface of the plurality of charging components 140 one by one, and the other end is connected to the power management assembly 19. One end of the plurality of high-voltage cables corresponds to and is electrically connected to the charging interface of the plurality of charging components 140 one by one, and the other end corresponds to and is electrically connected to the plurality of energy storage and conversion modules 200 one by one.

[0074] Further optionally, a switch is arranged on each of the plurality of high-voltage cables. When the battery needs to be removed after charging is completed or the battery needs to be charged by being plugged into the charging interface, the switch can be disconnected for no-electricity operation, thereby ensuring the safety of the system in use.

[0075] In an implementable embodiment, in order to enable the plurality of high-voltage cables and the plurality of low-voltage cables to be arranged in the box 10 in an orderly manner without interfering with each other, the battery charging assembly 14 further comprises a high-voltage installation bridge 145 and a low-voltage installation bridge 144. The low-voltage installation bridge 144 and the high-voltage installation bridge 145 are both installed on the side wall of the battery cabin 11. The plurality of low-voltage cables are fixedly installed on the low-voltage installation bridge 144, and the plurality of high-voltage cables are installed on the high-voltage installation bridge 145. Thus, the plurality of high-voltage cables and the plurality of low-voltage cables are classified, thereby avoiding the problem of safety accidents due to different currents of the plurality of high-voltage cables and the plurality of low-voltage cables.

[0076] It needs to be understood that the low-voltage cable refers to a cable for transmitting low-voltage signals, which is usually used for transmitting data signals, and the power management assembly 19 obtains the state information of each battery through the low-voltage cable to control the charging and discharging of each battery accordingly; the high-voltage cable is a cable specially used for transmitting high voltage and large current, and the energy storage converter assembly 20 charges the battery through the high-voltage cable.

[0077] In summary, when charging the battery with low power through the energy storage system, the empty battery placing box 141 is quickly pulled out from the battery placing space through the cooperation of the roller 142 and the guide rail, then the battery is placed in the battery placing box 141, and the charging connector, the low-voltage communication connector, and the cooling liquid inlet connector of the battery are respectively plugged into the charging interface, the low-voltage communication interface, and the cooling interface on the battery placing box 141 one by one, then the battery placing box 141 is pushed into the battery placing space, the auxiliary cooling pipe 162 of the cooling assembly is connected with the cooling interface, the low-voltage cable is connected with the low-voltage communication interface, and the high-voltage cable is connected with the charging interface, then the switch on the high-voltage cable is opened, and the energy storage converter assembly 20 is controlled by the power management assembly 19 to charge the battery, thereby achieving the effect of quickly charging the battery.

[0078] Further, when the power management assembly 19 detects that the battery is fully charged, the switch on the high-voltage cable is closed after charging is completed, the power management assembly 19 controls the energy storage converter assembly 20 to stop charging the battery, the auxiliary cooling pipe 162 corresponding to the battery placing cabin is unplugged from the cooling interface, the low-voltage cable is unplugged from the low-voltage communication interface, and the high-voltage cable is unplugged from the charging interface. At this time, the external auxiliary cooling pipe 162, the low-voltage cable, and the high-voltage cable of the battery placing box 141 are all removed, the fixing part connecting the battery placing box and the battery placing space is then disassembled, the battery placing box 141 containing the fully charged battery is then quickly pulled out from the battery placing space through the cooperation of the roller 142 and the guide rail, and finally the charging connector, the low-voltage communication connector, and the cooling liquid inlet connector on the fully charged battery are respectively unplugged from the charging interface, the low-voltage communication interface, and the cooling interface on the battery placing box 141 one by one, the fully charged battery is removed, and is provided for the vehicle in need of replacing the battery. The battery with insufficient power removed from the vehicle is then placed in the battery placing box 141, and the charging steps described above are repeated to charge the new battery with insufficient power. Moreover, the charging state of the battery in each battery placing box 141 can be controlled by the power management assembly 19 controlling the energy storage converter assembly 20, so that when a single battery is replaced, only the circuit of the battery placing cabin in need of replacing the battery needs to be disconnected for a short time, and other batteries placed in the battery placing box 141 being charged will not be affected. Therefore, the operation of replacing the battery of the energy storage system has the effects of being fast, convenient, and efficient.

[0079] It is important to understand that the charging interface, low-voltage communication interface, and cooling interface on the side wall of the battery placement box 141 should be bidirectional interfaces. For example, one end of the charging interface, low-voltage communication interface, and cooling interface can be detachably connected to the auxiliary cooling pipe 162, the low-voltage cable, and the high-voltage cable, respectively, and the other end can be detachably connected to the charging connector, low-voltage communication connector, and coolant inlet connector on the battery, respectively. For example, the charging interface, low-voltage communication interface, and cooling interface on the side wall of the battery placement box 141 can be common bidirectional plugs or bidirectional connectors in the prior art; plugs are provided at the corresponding connection points of the auxiliary cooling pipe 162, low-voltage cable, high-voltage cable, and cooling interface, low-voltage communication interface, and charging interface.

[0080] Furthermore, such as Figures 1-3 As shown, when the connecting lines in the battery compartment 11 and the control compartment 12 emit smoke or catch fire, in order to quickly extinguish the fire source, this vehicle battery energy storage system 1 also includes a fire-fighting component 17. The fire-fighting component 17 includes a fire-fighting element 170 and multiple smoke and temperature detectors 171. The fire-fighting element 170 is located in the control compartment 12 and is connected to the pipelines of the battery compartment 11 and the control compartment 12. The multiple smoke and temperature detectors 171 are respectively located in the battery compartment 11 and the control compartment 12. When the connection lines in the battery compartment 11 and the control compartment 12 catch fire or emit smoke due to a fault, the smoke and temperature detector 171 can detect the danger signal in a timely manner and feed it back to the fire-fighting component 170. The fire-fighting component 170 can spray fire-extinguishing gas into the battery compartment 11 and the control compartment 12 through the pipeline, without having to use the water injection component 15 to extinguish the fire in the battery compartment 11. This avoids the risk of damaging the battery by injecting water into the battery compartment 11 through the water injection component 15 to extinguish the fire.

[0081] Optionally, in one feasible implementation, the fire-fighting component 170 includes a fire cabinet 172, a controller and a gas cylinder, a main air pipe 173 and multiple branch air pipes 174. The fire cabinet 172 is installed in the control compartment 12, the gas cylinder is installed inside the fire cabinet 172, one end of the main air pipe 173 is connected to the gas cylinder, and the other end extends through the side wall of the fire cabinet 172 to the control room. One end of each of the multiple branch air pipes 174 is connected to the other end of the main air pipe 173, and the other ends extend to the control room and the battery compartment 11 respectively. The controller is electrically connected to the gas cylinder and multiple smoke and temperature detectors respectively.

[0082] Optionally, after the fire extinguishing assembly 17 extinguishes the fire when the connecting lines in the battery compartment 11 and the control compartment 12 emit smoke or catch fire, a vent valve 101 is also provided on the side wall of the housing 10 to allow the gas in the battery compartment 11 and the control compartment 12 to be discharged quickly. The vent valve 101 passes through the side wall of the housing 10 and is connected to the battery compartment 11 and the control compartment 12, thereby facilitating the exhaust.

[0083] Further, as shown in Figures 1-3 order to reasonably allocate the electric energy of the external power supply to the energy storage system 1 of the vehicle battery, the energy storage system 1 of the vehicle battery further comprises a power distribution assembly 18 arranged in the equipment placement area 13, the power distribution assembly 18 comprises a power distribution box 180 and a cooling fan 181, the power distribution assembly 18 is installed in the equipment placement area 13 and is electrically connected with the electric energy management assembly 19, the cooling assembly 16, the energy storage and conversion assembly 20 and the fire-fighting assembly 17, and is used for distributing electric energy for the electric energy management assembly 19, the cooling assembly 16 and the fire-fighting assembly 17; the cooling fan 181 is fixedly installed on the side wall of the power distribution box 180, and when the temperature of the power distribution assembly 18 is too high during the working process, the cooling fan 181 can be used for cooling.

[0084] Optionally, the power distribution assembly 18 can comprise a power distribution box 180, a power distributor and the like, which are not limited in the embodiment.

[0085] In summary, the energy storage system 1 of the vehicle battery provided by the embodiment can cool the battery placed on the charging component 140 when the battery is charged, and connect the battery with the charging interface, the low-voltage communication interface and the cooling interface on the charging component 140, so that the battery placed on the charging component 140 can be cooled by the cooling assembly 16 when the battery is charged, thereby reducing the risk of self-ignition due to excessively high temperature; when the battery suddenly explodes during the charging process due to some reasons (for example, short-circuit protection failure, over-discharge protection failure and the like), the electric energy management assembly 19 can control the water injection assembly 15 to inject water into the battery cabin 11, so as to quickly eliminate the fire source and ensure the safety of the entire energy storage system; when the connecting lines in the battery cabin 11 and the control cabin 12 catch fire or smoke due to failure, the smoke temperature detector 171 can detect the danger signal in time and feed back the danger signal to the fire-fighting component 170, and the fire-fighting component 170 can spray fire-extinguishing gas into the battery cabin 11 and the control cabin 12 through the pipeline, without using the water injection assembly 15 to extinguish the fire in the battery cabin 11, thereby avoiding the risk of damaging the battery by injecting water into the battery cabin 11 to extinguish the fire. Therefore, the energy storage system 1 of the vehicle battery provided by the embodiment can reduce the loss as much as possible when the system fails, on the premise of ensuring the safety of the battery during the charging process.

[0086] The above describes the embodiments of the present application by specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art according to the disclosure. Although the present application is described in combination with the preferred embodiments, it does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of describing the present application in combination with the embodiments is to cover other options or modifications which can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the above description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0087] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0088] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0089] The terms "first", "second", and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0090] In the description of the present embodiment, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

Claims

1. An energy storage system for a vehicle battery, characterized in that, The battery cabin, the control cabin, the equipment placement area, at least one battery charging assembly arranged in the battery cabin, the water injection assembly installed on the outside of the cabinet near the battery cabin, the electric energy management assembly and the energy storage and conversion assembly installed in the control cabin, and the cooling assembly arranged in the equipment placement area are arranged in the cabinet. The battery cabin is provided with a placement rack arranged side by side or stacked to define a battery placement space, and the battery charging assembly includes a plurality of charging components arranged side by side or stacked in the battery cabin and distributed to adapt to a plurality of battery placement spaces. The water inlet of the water injection assembly is communicated with an external water pipe, and the water injection port is communicated with an internal pipe of the cabinet.

2. The energy storage system of the vehicle battery of claim 1, wherein, The energy storage and conversion assembly is communicated with the water injection assembly and the cooling assembly. The water injection assembly is located on the side of the cabinet away from the control cabin and includes a water injection pipe. The one end of the water injection pipe is provided with an automatic water inlet pipe and a manual water inlet pipe connected in parallel to the water inlet.

3. The energy storage system of claim 1, wherein, The other end of the water injection pipe includes a first water injection port and a plurality of second water injection ports arranged in parallel.

4. The energy storage system of claim 3, wherein, The fire-fighting assembly includes a fire-fighting component and a plurality of smoke temperature detectors. The fire-fighting component is arranged in the control cabin, and the plurality of smoke temperature detectors are arranged in the battery cabin and the control cabin, respectively. The fire-fighting component includes a fire-fighting cabinet, a controller, a gas tank, a main gas pipe, and a plurality of branch gas pipes. The gas tank is installed in the fire-fighting cabinet, one end of the main gas pipe is communicated with the gas tank, the other end of the main gas pipe extends out of the side wall of the fire-fighting cabinet into the control room, one end of the plurality of branch gas pipes is communicated with the other end of the main gas pipe, and the other end of the plurality of branch gas pipes extends into the control room and the battery cabin, respectively. The controller is electrically connected with the gas tank and the plurality of smoke temperature detectors.

5. The energy storage system of the battery for vehicle according to claim 1, wherein, The cooling assembly comprises a cooling component installed on the equipment placing area, a main cooling pipe, and a plurality of sub-cooling pipes corresponding to and communicating with the cooling interfaces of the plurality of charging components, wherein one end of the main cooling pipe communicates with the cooling component, and the other end extends into the battery cabin, and one end of each of the plurality of sub-cooling pipes communicates with one end of the main cooling pipe, and the other end extends to communicate with the cooling interface of the corresponding charging component.

6. The energy storage system of the battery for vehicle according to claim 1, wherein, The charging component comprises a battery placing box and a roller arranged on the side wall of the battery placing box and facing the inner wall of the battery placing space, and the inner wall of the battery placing space is provided with a guide rail matched with the roller; and the battery placing box is further provided with a fixing member for fixing the battery placing box and the battery. The charging interface, the cooling interface, and the low-voltage communication interface are arranged on the side wall of the battery placing box.

7. The energy storage system of a vehicle battery as claimed in claim 6, wherein, The battery charging assembly further comprises a plurality of low-voltage cables and a plurality of high-voltage cables, one end of each of the plurality of low-voltage cables corresponds to and is electrically connected to the low-voltage communication interface of the plurality of charging components, and the other end of each of the plurality of low-voltage cables is connected to the power management assembly. One end of each of the plurality of high-voltage cables corresponds to and is electrically connected to the charging interface of the plurality of charging components, and the other end of each of the plurality of high-voltage cables corresponds to and is electrically connected to the plurality of energy storage converter modules.

8. The energy storage system of a vehicle battery as claimed in claim 7, wherein, The battery charging assembly further comprises a high-voltage installation bridge and a low-voltage installation bridge, and the low-voltage installation bridge and the high-voltage installation bridge are installed on the side wall of the battery cabin, the plurality of low-voltage cables are fixedly installed on the low-voltage installation bridge, and the plurality of high-voltage cables are installed on the high-voltage installation bridge.

9. The energy storage system of an automotive battery as claimed in claim 3 wherein, The power distribution assembly is arranged on the equipment placing area, and the power distribution assembly comprises a power distribution box and a cooling fan, the power distribution assembly is installed on the equipment placing area and is electrically connected to the power management assembly, the cooling assembly, the energy storage converter assembly, and the fire-fighting assembly, and the cooling fan is fixedly installed on the side wall of the power distribution box.

10. The energy storage system of an automotive battery as claimed in claim 1 wherein, The side wall of the box body is further provided with a pressure relief valve and an exhaust valve, and the pressure relief valve and the exhaust valve communicate with the battery cabin through the side wall of the box body.

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