Storage battery system

Abstract

To provide a storage battery system in which an influence of a use environment is suppressed.SOLUTION: A storage battery system 5 includes: a housing 10 that is installed outdoors; a storage battery 20 that is disposed inside the housing 10; a fan 24 that can adjust a speed of air flowing through a heat radiation part 22 that promotes heat radiation of heat generated from the storage battery 20; a heat insulating material 30 that is disposed between the storage battery and a top plate of the housing 10 so as to form a flow path S through which an air current generated by the fan 24 passes; and a lid body 32 which is openable and closable with respect to a first opening part 31A between the heat insulating material 30 and the housing 10, the lis body 32 becoming a closed state P2 when the speed of air is larger than a predetermined value and becoming an open state P1 when the speed of air is smaller than the predetermined value.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a storage battery system. [Background technology]

[0002] Patent Document 1 discloses a storage battery system comprising a housing that forms the outer shell of the storage battery system, and a discharge section that has one end connected to the housing via an inlet and the other end connected to the outside via an outlet, and that is capable of guiding and discharging air inside the housing to the outside, with the discharge outlet of the discharge section positioned opposite the bottom of the shielded chamber, and the shielded chamber and the discharge outlet of the discharge section positioned at a distance. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-018699 Summary of the Invention [Problem to be solved by the invention]

[0004] In a storage battery system installed outdoors, it is preferable to suppress the influence of the usage environment.

[0005] An object of the present invention is to provide a storage battery system that is less susceptible to the effects of the usage environment. [Means for solving the problem]

[0006] The storage battery system of claim 1 comprises a housing to be installed outdoors, a storage battery arranged inside the housing, a fan capable of adjusting the air speed flowing through a heat dissipation section that promotes the dissipation of heat generated by the storage battery, an insulating material arranged between the top plate of the housing and the housing to form a flow path through which the airflow generated by the fan passes, and a cover that can be opened and closed for an opening between the insulating material and the housing, the cover being in a closed state when the air speed is greater than a predetermined value and in an open state when the air speed is less than the predetermined value.

[0007] The battery storage system according to claim 1 includes a lid that is closed when the wind speed is greater than a predetermined value and open when the wind speed is less than the predetermined value. In a warm environment, the fan's wind speed is increased and the lid closes the opening, while in a cold environment, the fan's wind speed is decreased and the lid opens the opening. Therefore, in a warm environment, the heat insulating material blocks the transfer of radiant heat from the top plate heated by direct sunlight. Meanwhile, in a cold environment, if snow accumulates on the top plate of the housing, warm air inside the housing flows into the flow path through the opening. The warm air flowing into the flow path melts the snow accumulated on the top plate. This allows the battery storage system to be less affected by the operating environment.

[0008] A storage battery system according to a second aspect of the present invention is the storage battery system according to the first aspect, wherein the opening is provided at a position where an air current generated by the fan flows.

[0009] In the storage battery system according to claim 2, the opening is located at a position where the airflow generated by the fan flows, so that when the lid is opened in a cold environment, warm air can easily flow into the flow path, thereby promoting the melting of snow accumulated on the top plate by the warm air flowing into the flow path.

[0010] The storage battery system of claim 3 is a storage battery system as described in claim 1 or claim 2, in which the lid body is provided at a position where the airflow generated by the fan hits it, and when the wind speed is greater than a predetermined value, the airflow hits the lid body, resulting in a closed state, and when the wind speed is less than the predetermined value, the airflow hits the lid body weaker than in the closed state, resulting in an open state.

[0011] In the battery storage system according to claim 3, when the wind speed is greater than a predetermined value, the airflow hits the lid, resulting in a closed state, and when the wind speed is less than the predetermined value, the airflow hits the lid weaker than in the closed state, resulting in an open state. In a warm environment, the fan's wind speed is increased, and the resulting airflow hits the lid strongly, causing the lid to close the opening. On the other hand, in a cold environment, the fan's wind speed is decreased, and the resulting airflow hits the lid weakly, causing the lid to open the opening. As a result, a battery storage system can be achieved that has a simple configuration and is less susceptible to the effects of the usage environment.

[0012] A storage battery system according to a fourth aspect of the present invention is the storage battery system according to the third aspect, wherein the lid body is provided with an auxiliary member that assists movement from the open state to the closed state.

[0013] In the storage battery system according to claim 4, the cover is provided with an auxiliary member that assists the cover in moving from the open state to the closed state. In a warm environment, the cover is moved from the open state to the closed state by the action force of the airflow and the action force of the auxiliary member. This reduces the driving force of the fan. As a result, the storage battery system can reduce power consumption and the influence of the usage environment.

[0014] A storage battery system according to a fifth aspect of the present invention is the storage battery system according to any one of the first to fourth aspects, wherein an air conditioner is provided inside the housing.

[0015] In the battery storage system according to claim 5, an air conditioner is provided inside the housing, and the temperature inside the housing is adjusted by the air conditioner, thereby making it possible to provide a battery storage system that is less susceptible to the effects of the usage environment. [Effects of the Invention]

[0016] As described above, the storage battery system according to the present invention can suppress the influence of the usage environment. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a cross-sectional view schematically showing a power storage system according to an embodiment. [Figure 2] 1 is a flowchart illustrating a processing flow according to an embodiment. [Figure 3] 10 is an explanatory diagram showing the operation of the power storage system according to the embodiment, illustrating the operation in a warm environment. FIG. [Figure 4] 1 is an explanatory diagram showing the operation of a storage battery system according to an embodiment, illustrating the operation in a cold environment. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, a storage battery system according to an embodiment will be described with reference to the drawings. In the embodiment, an example in which the storage battery system is applied to a stationary storage battery will be described.

[0019] [Configuration of storage battery system 5] As shown in Fig. 1, the storage battery system 5 is provided outside the building 2. The storage battery system 5 includes a housing 10, a storage battery 20, a heat dissipation unit 22, a fan 24, an air conditioner 26, a heat insulating material 30, a lid 32, and an auxiliary member 36. The storage battery system 5 also includes a temperature detection unit 42 and a control unit 44.

[0020] The housing 10 is installed on a base 6 provided on the ground G. In other words, the housing 10 is installed outdoors. The housing 10 is formed in the shape of a rectangular box with an open bottom, and has a top plate 11 and side walls 12.

[0021] The storage battery 20 is installed inside the housing 10 and on a base 6. The storage battery 20 includes a plurality of battery packs (not shown), a plurality of PCUs (Power Control Units), and the like.

[0022] The heat dissipation unit 22 is provided inside the housing 10 and adjacent to the storage battery 20. The heat dissipation unit 22 is provided above the air conditioning unit 26. The heat dissipation unit 22 is, for example, a radiator. The heat dissipation unit 22 and the storage battery 20 are connected by a pipe 21 through which a fluid flows. The fluid heated in the storage battery 20 flows through the pipe 21 to the heat dissipation unit 22, thereby promoting the dissipation of heat generated from the storage battery 20. In other words, the heat dissipation unit 22 cools the fluid heated by the heat generated by the storage battery 20.

[0023] The fan 24 is provided inside the housing 10, above the heat dissipation section 22. When the fan 24 is driven, it generates air that passes through the heat dissipation section 22. The fan 24 generates air that flows upward. The fan 24 is configured so that the speed of the air flowing through the heat dissipation section 22 can be adjusted by the control section 44.

[0024] Air conditioner 26 is installed inside housing 10, on base 6. Air conditioner 26 is provided below heat dissipation unit 22, and supplies hot or cold air upward. Air conditioner 26 is configured so that the temperature of the air it supplies can be adjusted by control unit 44.

[0025] The heat insulating material 30 is installed inside the housing 10, above the storage battery 20. The heat insulating material 30 is arranged with a space between it and the top plate 11. The heat insulating material 30 is arranged so as to form a flow path S through which the airflow generated by the fan 24 passes. In other words, the heat insulating material 30 is provided so as to separate the flow path S from the storage space V in which the storage battery 20 is accommodated. The heat insulating material 30 can be formed, for example, from a foamed resin material or a fibrous material. The heat insulating material 30 is formed in the shape of a rectangular plate with the thickness direction in the vertical direction.

[0026] A first opening 31A serving as the opening 31 is formed between one longitudinal end of the heat insulating material 30 and the side wall 12 of the housing 10. The first opening 31A is provided above the fan 24. The first opening 31A is provided at a position where the airflow generated by the fan 24 flows.

[0027] A second opening 31B is formed as the opening 31 between the other longitudinal end of the heat insulating material 30 and the side wall 12 of the housing 10. The airflow generated by the fan 24 flows into the flow path S from the first opening 31A and flows out from the second opening 31B.

[0028] The lid 32 is formed in a rectangular plate shape large enough to cover the first opening 31A. The lid 32 is provided in a position where it is hit by the airflow generated by the fan 24. The lid 32 is also provided in a position where it is hit by the airflow generated by the air conditioning unit 26. The base end of the lid 32 is supported by a hinge 33 held on the side wall 12 of the housing 10 so as to be rotatable in the vertical direction. The lid 32 is configured to be movable between an open position P1 and a closed position P2. In the open position P1, the tip of the lid 32 faces downward, opening the first opening 31A. In the closed position P2, the tip of the lid 32 abuts against the side wall 12, closing the first opening 31B. The lid 32 may also be formed from a heat insulating material.

[0029] When the wind speed of the fan 24 is greater than a predetermined value, the airflow generated by the fan 24 hits the lid 32, resulting in a closed state P2. When the wind speed of the fan 24 is less than a predetermined value, the airflow generated by the fan 24 hits the lid 32 weaker than in the closed state P2, resulting in an open state P1.

[0030] The auxiliary member 36 is, for example, a tension coil spring, and one end is connected to the tip of the lid 32 and the other end is connected to the top plate 11 of the housing 10. The auxiliary member 36 is configured to assist the lid 32 in moving from the open state P1 to the closed state P2 by its elastic force.

[0031] The temperature detection unit 42 is, for example, a temperature sensor that is disposed outside the housing 10 and detects the outside air temperature. The control unit 44 is, for example, disposed inside the housing 10 and is a computer that includes a CPU and a memory.

[0032] [Functional configuration of storage battery system 5] As shown in Figure 1, functionally, the storage battery system 5 has temperature information detected by a temperature detection unit 42 input to a control unit 44, and processing information processed by the control unit 44 for opening and closing is output to the fan 24 and the air conditioning unit 26.

[0033] [Opening and closing process procedure] 2, when the opening / closing process is started, the control unit 44 determines whether or not the environment is cold based on the temperature information detected by the temperature detection unit 42 (step S101). A cold environment is an environment where snow may accumulate. If it is determined that the environment is cold (YES in step S101), the process proceeds to step S102. On the other hand, if it is determined that the environment is not cold (NO in step S101), the process proceeds to step S105.

[0034] In step S102, the control unit 44 sets the air conditioner 26 to heating mode, and the air conditioner 26 supplies hot air.

[0035] Next, the control unit 44 sets the wind speed of the fan 24 to less than a predetermined value (step S103).

[0036] Next, the control unit 104 determines whether or not to end the open / close process (step S104). If it is determined that the open / close process should be ended (YES in step S104), the open / close process is ended. On the other hand, if it is determined that the open / close process should not be ended (NO in step S104), the process returns to step S101.

[0037] In step S105, the control unit 44 sets the air conditioner 26 to cooling mode, and cool air is supplied from the air conditioner 26.

[0038] Next, the control unit 44 sets the wind speed of the fan 24 to a predetermined value or higher (step S106), and the process proceeds to step S104.

[0039] [Operation of storage battery system 5] (warm environment) 3, in a warm environment, the fan 24 is driven to generate an upward airflow at a speed equal to or greater than a predetermined value. The air conditioner 26 is also driven to generate an upward airflow (cool air). This airflow then hits the wide surface of the lid 32, exerting a force that pushes the lid 32 up.

[0040] As a result, the action of the airflow generated by the fan 24 and the air conditioner 26, and the action of the auxiliary member 36, moves the cover 32 from the open state P1 to the closed state P2.

[0041] In a warm environment, the top plate 11 is heated by direct sunlight from the sun 61, and the transfer of radiant heat from the top plate 11 is blocked by the heat insulating material 30. At this time, since the first opening 31A is closed by the lid 32, the transfer of radiant heat from the top plate 11 to the storage space V is suppressed.

[0042] (cold environment) As shown in Figure 4, in a cold environment, the fan 24 is driven to generate an upward airflow at a speed less than a predetermined value, which is weaker than that in a warm environment. The air conditioner 26 is also driven to generate an upward airflow (warm air). In this case, even if the airflow strikes the wide surface of the lid 32, it does not push the lid 32 upward. This causes the lid 32 to move from the closed position P2 to the open position P1.

[0043] Furthermore, in a cold environment, the top plate 11 is cooled by the accumulated snow 62. At this time, since the first opening 31A is open, the warm air from the air conditioner 26 flows into the flow path S from the first opening 31A. Then, heat is exchanged between the warm air that has flowed into the flow path S and the accumulated snow, causing the accumulated snow to melt.

[0044] [Effect] However, it is not recommended to use the storage battery 20 in a high-temperature environment from the viewpoint of safety, lifespan, etc. In addition, in a storage battery system installed outdoors, the wind speed of the fan 24 is increased in a warm environment to cool the storage battery 20.

[0045] The storage battery system 5 according to the embodiment includes a housing 10 that is installed outdoors, a storage battery 20 that is arranged inside the housing 10, a fan 24 that can adjust the speed of airflow flowing to a heat dissipation section 22 that promotes the dissipation of heat generated by the storage battery 20, an insulating material 30 that is arranged between the top plate of the housing 10 and the housing 10 to form a flow path S through which the airflow generated by the fan 24 passes, and a cover body 32 that can be opened and closed for a first opening 31A between the insulating material 30 and the housing 10, the cover body 32 being in a closed state P2 when the wind speed is greater than a predetermined value and in an open state P1 when the wind speed is less than the predetermined value (see Figure 1).

[0046] By providing the heat insulating material 30 between the top plate of the housing 10 and the heat insulating material 30 so as to form a flow path S through which the airflow generated by the fan 24 passes, in a warm environment, the transfer of radiant heat from the top plate heated by direct sunlight is blocked by the heat insulating material 30. Therefore, the inside of the housing 10 is prevented from becoming too hot due to direct sunlight.

[0047] Furthermore, by providing the lid 32, which is in the closed state P2 when the wind speed is greater than a predetermined value and in the open state P1 when the wind speed is less than the predetermined value, the wind speed of the fan 24 is increased in a warm environment, causing the lid 32 to close the first opening 31A, and in a cold environment, the wind speed of the fan 24 is decreased, causing the lid 32 to open the first opening 31A. Therefore, in a warm environment, the heat insulating material 30 blocks the transfer of radiant heat from the top plate 11, which has been heated by direct sunlight. On the other hand, in a cold environment, warm air inside the housing 10 flows into the flow path S through the first opening 31A. The warm air flowing into the flow path S then melts the accumulated snow 62 on the top plate 11. This allows the power storage system to be less affected by the usage environment.

[0048] In the storage battery system 5 according to this embodiment, the first opening 31A is provided at a position where the airflow generated by the fan 24 flows (see FIG. 1).

[0049] The first opening 31A is provided at a position where the airflow generated by the fan 24 flows, so that when the cover 32 opens the first opening 31A in a cold environment, warm air can easily flow into the flow path S. Therefore, the warm air that has flowed into the flow path S promotes melting of the accumulated snow 62 on the top plate 11.

[0050] In the storage battery system 5 according to the embodiment, the lid body 32 is positioned at a position where it is hit by the airflow generated by the fan 24, and when the wind speed is greater than a predetermined value, the airflow hits the lid body 32, resulting in a closed state P2, and when the wind speed is less than the predetermined value, the airflow hits the lid body 32 weaker than in the closed state P2, resulting in an open state P1 (see Figures 3 and 4).

[0051] When the wind speed is greater than a predetermined value, the airflow hits lid 32, resulting in a closed state P2, and when the wind speed is less than the predetermined value, the airflow hits lid 32 weaker than in closed state P2, resulting in an open state P1. In a warm environment, the wind speed of fan 24 is increased, and the resulting airflow hits lid 32 strongly, causing lid 32 to close first opening 31A. On the other hand, in a cold environment, the wind speed of fan 24 is decreased, and the resulting airflow hits lid 32 weakly, causing lid 32 to open first opening 31A. As a result, a power storage system can be achieved that has a simple configuration and is less susceptible to the effects of the usage environment.

[0052] In the storage battery system 5 according to this embodiment, the cover 32 is provided with an auxiliary member 36 that assists in movement from the open state P1 to the closed state P2 (see FIG. 1).

[0053] The cover 32 is provided with an auxiliary member 36 that assists in the movement from the open state P1 to the closed state P2, so that in a warm environment, the cover 32 is moved from the open state P1 to the closed state P2 by the action force of the airflow and the action force of the auxiliary member 36. This reduces the driving force of the fan 24. As a result, it is possible to provide a power storage system that reduces the impact of the usage environment while reducing power consumption.

[0054] In the storage battery system 5 according to this embodiment, an air conditioner 26 is provided inside the housing 10 (see FIG. 1).

[0055] An air conditioner 26 is provided inside the housing 10, and the temperature of the space inside the housing 10 is adjusted by the air conditioner 26. This makes it possible to provide a power storage system that is less susceptible to the effects of the usage environment.

[0056] The storage battery system according to the embodiment has been described above based on the embodiment. However, the specific configuration is not limited to this embodiment, and design changes are permitted as long as they do not deviate from the gist of the invention according to each claim.

[0057] In the embodiment, the auxiliary member 36 is an extension coil spring. However, the auxiliary member is not limited to this, and for example, a shape memory alloy spring or the like can also be used. Also, the battery storage system does not necessarily have to include an auxiliary member. In this case, the lid may be opened and closed manually or electrically.

[0058] In the embodiment, an example has been shown in which the storage battery system 5 includes the air conditioner 26. However, the storage battery system does not necessarily have to include an air conditioner.

[0059] In the embodiment, the fan 24 is provided above the heat dissipation unit 22. However, the fan may be provided below the heat dissipation unit.

[0060] In the embodiment, the heat dissipation portion 22 is a radiator, but the heat dissipation portion is not limited to this and may be, for example, a heat dissipation fin.

[0061] In the embodiment, an example has been shown in which the temperature information detected by the temperature detection unit 42 is input to the control unit 44. However, detection information detected by a snow accumulation sensor may also be input to the control unit.

[0062] In the embodiment, an example has been shown in which the storage battery system is applied to a stationary storage battery, but the storage battery system is not limited to the stationary type. [Explanation of symbols]

[0063] 5. Battery storage system 10. Cabinet 20 Storage battery 22 Heat radiation part 24 Fans 26 Air conditioner 30 Insulation 31A First opening (an example of an opening) 32 Lid 36 Auxiliary parts P2 closed state P1 open state S flow path

Claims

1. a housing installed outdoors; a storage battery disposed inside the housing; a fan capable of adjusting the airflow speed flowing through a heat dissipation section that promotes the dissipation of heat generated from the storage battery; a heat insulating material disposed between the top plate of the housing and the heat insulating material to form a flow path through which the airflow generated by the fan passes; a cover that can be opened and closed for an opening between the heat insulating material and the housing, When the wind speed is greater than a predetermined value, the valve is closed. a lid that is opened when the wind speed is lower than a predetermined value; A battery storage system comprising:

2. The opening is provided at a position where the airflow generated by the fan flows. The battery system according to claim 1 .

3. the cover is provided at a position where the airflow generated by the fan hits the cover, When the wind speed is greater than a predetermined value, the airflow hits the cover, causing the cover to be in a closed state. When the wind speed is smaller than a predetermined value, the airflow hits the lid weaker than in the closed state, resulting in an open state. The battery system according to claim 1 .

4. The lid is provided with an auxiliary member that assists the movement from the open state to the closed state. The battery system according to claim 3 .

5. An air conditioning device is provided inside the housing. The battery system according to claim 1 .

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