Energy storage container and locomotive

Abstract

The utility model relates to an energy storage container and a locomotive, the energy storage container comprises a box body, a voltage balance module, battery clusters and an air draft device, the voltage balance module and the battery clusters are arranged in the box body, and the voltage balance module is connected with the battery clusters and used for balancing the voltage of each battery cluster. The air draft device is arranged in the box body and used for extracting air flow outside the box body to dissipate heat of the voltage balance module. According to the technical scheme, the heat dissipation scheme of the voltage balance module on the energy storage container is economical and practical, and the heat dissipation effect is good.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to energy storage containers and locomotives. Background Art

[0002] With the development of the battery industry, not only electric devices such as electric vehicles and electric ships have emerged, but the development and application of electric locomotives powered by battery power is also a research and development focus of technicians in this field. The battery clusters inside electric locomotives are usually connected in parallel, which makes it easy for current backflow to occur between the battery clusters. Setting voltage balancing modules (such as DCDC modules and PCS modules) between battery clusters can effectively adjust the voltage of each battery cluster and avoid current backflow. The voltage balancing module generates a lot of heat during operation, and it is worth studying how the energy storage container can effectively dissipate the heat of the voltage balancing module. Utility Model Content

[0003] Based on this, the present application provides an energy storage container and a locomotive, and the voltage balancing module in the energy storage container can effectively dissipate heat.

[0004] An energy storage container, comprising:

[0005] Box;

[0006] A voltage balancing module and a battery cluster are disposed in the box, wherein the voltage balancing module is connected to the battery cluster and is used to balance the voltage of each battery cluster; and

[0007] An exhaust device is provided in the box body, and is used to extract air flow outside the box body to dissipate heat for the voltage balancing module.

[0008] In some embodiments, the box body includes a windward surface located in its width direction; an air outlet window is provided on the windward surface, and the air outlet window is connected to the space where the voltage balancing module is located; the internal space of the voltage balancing module is used for the airflow extracted by the exhaust device to circulate, and the voltage balancing module includes an air outlet connected to its internal space, and the air outlet is connected to the air outlet window.

[0009] In some embodiments, the box body further includes a wind shielding surface in the width direction thereof, wherein the wind shielding surface is located in front of the wind passing surface and is used to block airflow from flowing toward the wind passing surface.

[0010] In some embodiments, the wind shield surface is tilted toward the rear of the box.

[0011] In some embodiments, the box body includes a protruding structure, which is arranged to protrude outward along the width direction of the box body, and the protruding structure has the wind shielding surface and the wind passing surface connected to each other.

[0012] In some embodiments, the protruding structures enclose a cavity that is open toward the interior of the box.

[0013] In some embodiments, the protruding distance L of the protruding structure satisfies: 50mm≤L≤300mm.

[0014] In some embodiments, the energy storage container includes a door, which can open and close the space on the container where the voltage balancing module is located; the door includes the protruding structure.

[0015] In some embodiments, the energy storage container includes a plurality of the voltage balancing modules, each of the voltage balancing modules has an air outlet and an air inlet that are connected, and the air outlet of each of the voltage balancing modules is arranged toward the outside of the box body;

[0016] All the voltage balancing modules together enclose an air inlet channel that is connected to each of the air inlets, and the air exhaust device is used to deliver the air flow outside the box into the air inlet channel.

[0017] In some embodiments, the voltage balancing module is spaced apart from the top of the box to form an air passage, and the box is provided with an air inlet window and an air outlet window in the width direction thereof, and the air inlet window is located above the air outlet window;

[0018] The air passage is connected between the air inlet window and the air inlet passage, and the air outlet window is connected to the air outlet of the voltage balancing module.

[0019] In some embodiments, the voltage balancing module includes a cooling fan, the exhaust device includes an exhaust fan located in the air inlet channel, and the exhaust fan is located above the air inlet of the voltage balancing module; the cooling fan is used to cause the airflow passing through the voltage balancing module to flow out of the box.

[0020] In some embodiments, the energy storage container includes a battery compartment and a balancing compartment that are independently arranged, the battery cluster is located in the battery compartment, and the voltage balancing module is located in the balancing compartment.

[0021] In some embodiments, the energy storage container further includes an electrical compartment, and the electrical compartment is independently disposed on a side of the balancing compartment away from the battery compartment.

[0022] In some embodiments, the voltage balancing module includes a DCDC module and / or a PCS module.

[0023] A locomotive comprises a locomotive head and the energy storage container described in the above embodiment, wherein the energy storage container is used to supply power to the locomotive head.

[0024] In actual application of the above energy storage container and locomotive, the energy storage container sends the airflow outside the box into the box through the exhaust device to dissipate the heat of the voltage balancing module. Especially in the environment of locomotive movement, the airflow speed outside the box is fast, and the heat exchange efficiency of the airflow entering the box is high, which can play a good role in dissipating heat for the voltage balancing module. In this way, the heat dissipation solution of the voltage balancing module on the energy storage container is not only economical and affordable, but also has a good heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0026] Figure 1 Schematic diagram of an exploded view of an energy storage container according to some embodiments.

[0027] Figure 2 Schematic diagram of the internal structure of an energy storage container in some embodiments.

[0028] Figure 3 Schematic diagram of airflow inside and outside the energy storage container in some embodiments.

[0029] The reference numerals in the specific implementation manner are as follows:

[0030] 100. Energy storage container; X, front and rear direction; Y, width direction; Z, vertical direction;

[0031] 10. Box body; C1. Battery compartment; C2. Balance compartment; C3. Electrical compartment; 11. Box door; M1. Windward side; M2. Windward side; 11b. Protruding structure; q. Concave cavity; 12. Air outlet window; 13. Air inlet window;

[0032] 20. Voltage balance module; S1. Air inlet; S2. Air outlet; T1. Air inlet channel; T2. Air passage; 21. Cooling fan;

[0033] 30. Exhaust device; 31. Exhaust fan. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships, if any, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, if present, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, if any, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the present application, if it appears, unless otherwise clearly specified and limited, a first feature “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature “above”, “above” and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature “below”, “below” and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that, if present, when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] The embodiment of the present application aims at the problems in the background technology and provides an energy storage container and a locomotive. The energy storage container in the embodiment of the present application can be applied to, but not limited to, a locomotive.

[0041] The locomotive provided in the embodiment of the present application includes a locomotive head and an energy storage container. The locomotive head is a self-propelled vehicle that pulls or pushes railway vehicles for operation and does not carry commercial loads. The energy storage container is used to supply power to the locomotive head. The locomotive can be used to transport carriages loaded with goods, passengers and other objects along the rails. When the energy storage container is used for the locomotive, the front and rear direction X of the energy storage container corresponds to the driving direction of the locomotive.

[0042] The energy storage container is introduced in detail below.

[0043] Reference Figures 1 to 3 The energy storage container 100 provided in the embodiment of the present application includes a box body 10, a voltage balancing module 20, a battery cluster (not shown) and an exhaust device 30. The voltage balancing module 20 and the battery cluster are arranged in the box body 10. The voltage balancing module 20 is connected to the battery cluster to balance the voltage of each battery cluster. The exhaust device 30 is arranged in the box body 10 to extract airflow outside the box body 10 to dissipate heat for the voltage balancing module 20.

[0044] The box body 10 of the energy storage container 100 may be, but is not limited to, a rectangular parallelepiped. A battery cluster is disposed in the box body 10, and the battery cluster can store electrical energy and supply power to the outside. The specific structure of the battery cluster is not limited here, and reference may be made to conventional arrangements in the art.

[0045] The voltage balancing module 20 is used to balance the output voltage of each battery cluster. Specifically, with the locomotive as the load, one end of the voltage balancing module 20 is connected to the battery cluster, and the other end is used to connect the load. It is possible that multiple battery clusters in the box 10 are connected in parallel to a voltage balancing module 20, or each battery cluster is connected to an independent voltage balancing module 20. The voltage balancing module 20 can be a power module such as a DCDC module (direct current-to-direct current conversion), a PCS module (Power Conversion System, energy storage inverter module), etc. that can balance the output voltage of each battery cluster. The DCDC module and the PCS module are commonly used modules in this field. The specific principles and structures are not repeated in the embodiments of this application. Please refer to the prior art.

[0046] The exhaust device 30 may be a centrifugal fan, an axial flow fan, etc., and is used to send the airflow outside the box 10 into the box 10 to dissipate heat from the voltage balancing module 20 located in the box 10. Understandably, the box 10 is provided with an air outlet window 12, and the hot air after heat exchange with the voltage balancing module 20 flows out of the box 10 through the air outlet window 12.

[0047] In actual application, the energy storage container 100 sends the airflow outside the box 10 into the box 10 through the exhaust device 30 to dissipate heat for the voltage balancing module 20. Especially in the environment of locomotive movement, the airflow speed outside the box 10 is fast, and the airflow entering the box 10 has high heat exchange efficiency, which can play a good role in dissipating heat for the voltage balancing module 20. In this way, the heat dissipation solution of the voltage balancing module 20 on the energy storage container 100 is not only economical, but also has a good heat dissipation effect.

[0048] In some embodiments, reference Figure 1 The box body 10 includes a wind passing surface M1 located in the width direction Y thereof, and an air outlet window 12 is provided on the wind passing surface M1, and the air outlet window 12 is connected to the space where the voltage balancing module 20 is located. The internal space of the voltage balancing module 20 is used for the air flow extracted by the air exhaust device 30 to flow, and the voltage balancing module 20 includes an air outlet S2 connected to the internal space thereof, and the air outlet S2 is connected to the air outlet window 12.

[0049] The width direction Y of the box 10 is substantially perpendicular to its front-rear direction X. The windward surface M1 is the outer surface of the box 10 in the width direction Y, which may be but is not limited to a plane. The windward surface M1 may be located on one side or both sides in the width direction Y of the box 10.

[0050] Components are arranged in the internal space of the voltage balancing module 20. When the airflow drawn by the exhaust device 30 enters the internal space, the internal space can be effectively cooled, and the heat dissipation effect is good. The voltage balancing module 20 includes an air outlet S2, and the hot air after heat exchange with the components is discharged from the voltage balancing module 20 through the air outlet S2.

[0051] An air outlet window 12 is provided on the wind surface M1 , and the hot air after heat exchange with the voltage balancing module 20 is discharged through the air outlet S2 and then discharged from the box body 10 through the air outlet window 12 on the wind surface M1 .

[0052] In actual application, since the wind surface M1 is located in the width direction Y of the box 10, the box 10 discharges air from the left and / or right side in the width direction Y. Compared with the solution of discharging air from the front side of the box 10, the air pressure generated by the external airflow at the wind surface M1 during the driving of the locomotive is smaller, and the external airflow will not form an air wall to block the outflow of the airflow inside the box 10. The hot air flow inside the box 10 can be discharged from the box 10, so that the airflow can circulate between the inside and outside of the box 10, ensuring the heat dissipation effect of the voltage balancing module 20. Moreover, the box 10 discharges air from the left and / or right side in the width direction Y, the airflow circulation path is shorter, and the heat exchange efficiency is better.

[0053] In some embodiments, reference Figure 1 and Figure 3 The box body 10 further includes a wind shielding surface M2 located in the width direction Y thereof, and the wind shielding surface M2 is located in front of the wind passing surface M1 and is used to block the airflow from flowing toward the wind passing surface M1.

[0054] Specifically, a windshield can be provided in the width direction Y of the box body 10, and the windshield is provided in front of the wind outlet surface (i.e., in front of the energy storage container 100 in the front-to-back direction X). The windshield has a windshield surface M2, which can be a straight surface, a curved surface, etc., and the windshield surface M2 is provided toward the front side of the box body 10. It is easy to understand that the windshield surface M2 intersects with the front-to-back direction X of the box body 10.

[0055] During the running of the locomotive, the airflow flowing from the front to the back branched off from the front of the locomotive first contacts the windshield M2 head-on. Under the obstruction of the windshield M2, the direction of the airflow is changed and flows in the direction away from the box 10, so that the airflow does not flow through the wind surface M1 or flows very little through the wind surface M1. In this way, a windless or weak wind area with lower air pressure can be formed in the area near the wind outlet surface. The air pressure in the windless / weak wind area is low, and the hot air flow inside the box 10 can be discharged more smoothly. The air circulation inside and outside the box 10 is accelerated, which helps to improve the heat dissipation effect of the voltage balancing module 20.

[0056] In some embodiments, reference Figure 3 The wind shielding surface M2 is inclined toward the rear of the box body 10.

[0057] That is, the rear end of the wind shielding surface M2 disposed close to the rear side of the housing 10 extends toward the rear side of the housing 10 and is disposed away from the housing 10 compared to the front end thereof.

[0058] Under the guidance of the windshield M2, the airflow outside the box 10 moves away from the box 10 in the width direction Y of the box 10, but the airflow as a whole flows toward the rear side of the box 10. At this time, the windshield M2 has less resistance to the airflow, which can reduce the running resistance of the locomotive.

[0059] Of course, the wind shielding surface M2 may also be arranged perpendicular to the outer wall surface of the box body 10 , that is, extending along the width direction Y of the box body 10 .

[0060] In some embodiments, reference Figure 1 and Figure 3 The box body 10 includes a protruding structure 11b, which is protruded outward along the width direction Y of the box body 10. The protruding structure 11b has a wind shielding surface M2 and a wind passing surface M1 connected thereto.

[0061] That is, the windshield surface M2 and the wind passing surface M1 are formed synchronously by the convex structure 11b arranged in the width direction Y of the box body 10, and the windshield surface M2 and the wind passing surface M1 are simply formed. Moreover, the windshield surface M2 is connected to the wind passing surface M1, and the wind passing surface M1 is arranged adjacent to the windshield surface M2. The probability of the airflow guided by the windshield surface M2 to change direction passing through the wind surface M1 is lower, and it is easier to form a windless area or a weak wind area near the wind passing surface M1.

[0062] In other embodiments, the wind shielding surface M2 and the wind passing surface M1 may be spaced apart from each other instead of being directly connected.

[0063] In some embodiments, reference Figure 1 The raised structure 11 b encloses and forms a cavity q that is open toward the interior of the box body 10 .

[0064] That is, the protrusion structure 11b is hollow inside, and a cavity q is formed inside. The cavity q is open toward the inside of the box 10. The cavity q can be used as an extension of the internal space of the box 10. If the size of the voltage balancing module 20 is large, part of the voltage balancing module 20 can be accommodated in the cavity q. The cavity q increases the internal space of the box 10, making it easier to layout the voltage balancing module 20 in the box 10.

[0065] Moreover, with the addition of the cavity q, the space inside the box 10 for accommodating the voltage balancing module 20 becomes larger. When installing the same number of voltage balancing modules 20, the larger installation space can provide a larger airflow circulation space, allowing more airflow to enter the box 10 and exchange heat with the voltage balancing module 20, which helps to improve the heat dissipation efficiency of the voltage balancing module 20.

[0066] It can be understood that the protruding structure 11 b and the housing 10 are usually sealed to better protect the portion of the voltage balancing module 20 located in the cavity q.

[0067] In some embodiments, reference Figure 3 , the protruding distance L of the protruding structure 11b satisfies: 50mm≤L≤300mm.

[0068] The protruding distance L of the protruding structure 11b refers to the distance between the end of the windshield surface M2 away from the windward surface M1 and the windward surface M1 in the width direction Y of the box body 10. Specifically, the protruding distance L can be 50mm, 100mm, 150mm, 200mm, 250mm, 300mm, and any value between adjacent values.

[0069] When the protruding distance L of the protruding structure 11 b is within the above range, the concave cavity q of the protruding structure 11 b can provide a larger expansion space for the interior of the box body 10 and has less impact on the wind resistance of the energy storage container 100 .

[0070] Preferably, L is within the range of 150 mm to 200 mm. Within this range, the protruding structure 11 b will not cause excessive wind resistance and can provide a suitable expansion space, so that the heat dissipation effect of the voltage balancing module is better.

[0071] In some embodiments, reference Figure 1 and Figure 3 The energy storage container 100 includes a box body 10, and a box door 11 can open and close the space where the voltage balancing module 20 is located on the box body 10, and the box door 11 includes a protruding structure 11b.

[0072] The setting of the box door 11 facilitates the installation of the voltage balancing module 20 on the box body 10. Specifically, the box door 11 can be a single-opening door or a double-opening door, which can be flexibly set according to actual needs. The raised structure 11b is located on the box door 11. Specifically, a part of the door body of the box door 11 protrudes toward the outside of the box body 10 to form the raised structure 11b. The raised structure 11b is molded on the box door 11, and the raised structure 11b can be molded independently of the box body 10. The raised structure 11b is more convenient to mold, which helps to reduce the manufacturing cost of the energy storage container 100.

[0073] It is easy to understand that when the energy storage container 100 is provided with air outlet surfaces on both sides of the box body 10 in the width direction Y, the box doors 11 can be configured on both sides of the box body 10 in the width direction Y, and the air outlet surfaces are located on the box doors 11. That is, the box body 10 can have doors on both sides of the installation area where the voltage balancing module 20 is located. When the box door 11 closes the corresponding area, it should be sealed with the box body 10.

[0074] In some embodiments, reference Figure 1 and Figure 2The energy storage container 100 includes a plurality of voltage balancing modules 20, each of which has an air outlet S2 and an air inlet S1 connected to each other, and the air outlet S2 of each voltage balancing module 20 is arranged toward the outside of the box body 10. All the voltage balancing modules 20 together enclose an air inlet channel T1 connected to each air inlet S1, and the exhaust device 30 is used to deliver the airflow outside the box body 10 into the air inlet channel T1.

[0075] Optionally, the air inlet S1 and the air outlet S2 of the voltage balancing module 20 are located on opposite sides thereof. In practical applications, the air outlet S2 and the air inlet S1 of the voltage balancing module 20 can be located on opposite sides thereof in the width direction Y of the box 10. The air outlet S2 is arranged toward the outside of the box 10, and the air inlet S1 is arranged toward the inside of the box 10. In this way, the side surfaces of the voltage balancing module 20 can abut against each other, which helps to reduce space occupation.

[0076] All the voltage balancing modules 20 enclose an air inlet channel T1 , and the air inlet channel T1 is connected to the air inlet S1 of each voltage balancing module 20 .

[0077] For example, the voltage balancing module 20 is divided into two parts, the air outlet S2 of one part of the voltage balancing module 20 is set toward one side of the width direction Y of the box 10, and the air outlet S2 of the other part of the voltage balancing module 20 is set toward the other side of the width direction Y of the box 10. The air inlet S1 of the voltage balancing module 20 in the same part is in the same direction, and the voltage balancing modules 20 in the two parts are spaced apart in the width direction Y of the box 10 to form an air inlet duct, which is connected to the air inlet S1 of each voltage balancing module 20.

[0078] In practical application, combined with Figure 2 It is understood that the air exhaust device 30 sends the external airflow into the air inlet channel T1, and then the airflow flows in the air inlet channel T1 to the air inlet S1 of each voltage balancing module 20. At this time, the voltage balancing modules 20 share the same air inlet channel T1, which can improve the space utilization inside the box 10 and make the layout of the voltage balancing modules 20 more compact.

[0079] Optionally, the box body 10 takes in air from the top thereof, and under the action of the air exhaust device 30 , the air flow is sent into the air inlet channel T1 .

[0080] In some embodiments, reference Figure 2 The voltage balancing module 20 is separated from the top of the housing 10 to form an air passage T2. The housing 10 is provided with an air inlet window 13 and an air outlet window 12 in the width direction Y, and the air inlet window 13 is located above the air outlet window 12. The air passage T2 is connected between the air inlet window 13 and the air inlet passage T1, and the air outlet window 12 is connected to the air outlet S2 of the voltage balancing module 20.

[0081] Specifically, the air inlet window 13 and the air outlet window 12 can be arranged on the wind passing surface M1 described above. In the vertical direction Z, the air inlet window 13 is located above the air outlet window 12, that is, the air enters from the upper side of the box body 10 and the air exits from the lower side. Figure 2 It is understood that the cold air flow entering from the air inlet window 13 first flows through the air channel T2, then enters the air inlet channel T1, and then enters the voltage balance module 20 through the air inlet S1 to become hot air flow after heat exchange. The hot air flow is finally discharged through the air outlet S2 and the air outlet window 12.

[0082] In order to facilitate the installation of the voltage balancing module 20 inside the box 10, the height of the voltage balancing module 20 is usually less than the height of the internal space of the box 10. At this time, by utilizing the air passage T2 naturally formed between the voltage balancing module 20 and the top of the box 10, the air inlet window 13 is set above the air outlet window 12, the path of the airflow entering the air inlet channel T1 is shorter, and the structural layout of the box 10 is simpler. Moreover, since the air outlet window 12 is located below the air inlet window 13, by utilizing the position feature that the air outlet S2 of the voltage balancing module 20 is located below the air passage T2, the airflow path between the air outlet S2 of the voltage balancing module 20 and the air outlet window 12 can be shortened, the airflow circulation efficiency is improved, and the heat dissipation effect of the voltage balancing module 20 is thereby improved.

[0083] Specifically, the air inlet window 13 is arranged opposite to the air passage T2, and at least part of the air outlet window 12 is arranged opposite to the air outlet S2 of the voltage balancing module 20, so as to further shorten the airflow path and speed up the airflow circulation.

[0084] In some embodiments, reference Figure 2 The voltage balancing module 20 includes a cooling fan 21. The exhaust device 30 includes an exhaust fan 31 located in the air inlet channel T1. The exhaust fan 31 is located above the air inlet S1 of the voltage balancing module 20. The cooling fan 21 is used to force the airflow passing through the voltage balancing module 20 to flow out of the box 10.

[0085] The cooling fan 21 and the exhaust fan 31 may be centrifugal fans or axial flow fans. A plurality of exhaust fans 31 may be arranged in the air inlet channel T1 to increase the air flow speed and improve the air flow heat exchange efficiency. Figure 1 As shown, a plurality of exhaust fans 31 may be arranged at intervals in the front-to-rear direction X of the housing 10 and at the same arrangement height to uniformly supply air downward.

[0086] The exhaust fan 31 is located above the air inlet S1 of the voltage balancing module 20. The airflow flowing out of the air passage passes through the exhaust fan 31 and the air inlet S1 in sequence during the vertical downward flow. The airflow path is short, which can speed up the airflow circulation.

[0087] Typically, the voltage balancing module 20 has a cooling fan 21, and the cooling fan 21 of the voltage balancing module 20 is used to accelerate the exhaust of hot air flow, which can save costs. In addition, in other embodiments, an exhaust fan can be set at the air outlet window 12. Similarly, the exhaust fan 31 can also be arranged at the air passage T2 and the air inlet window 13.

[0088] Preferably, the air inlet window 13 and the air outlet window 12 are both louver windows, which can block part of the water vapor from entering the box body 10 , thereby reducing the corrosion of the voltage balancing module 20 by the water vapor.

[0089] In some embodiments, reference Figure 1 The energy storage container 100 includes an independently arranged battery compartment C1 and a balancing compartment C2, the battery cluster is located in the battery compartment C1, and the voltage balancing module 20 is located in the balancing compartment C2.

[0090] Understandably, the exhaust device 30 is used to deliver the external airflow of the box 10 into the balancing compartment C2. The voltage balancing module 20 and the battery cluster are placed in two separate independent spaces, and the water vapor carried by the external airflow will not enter the battery compartment C1, which can prevent the water vapor from corroding the battery cluster in the battery compartment C1 and improve the reliability of the battery cluster.

[0091] Further to the embodiments, refer to Figure 1 and Figure 3 The energy storage container 100 further includes an electrical compartment C3, which is independently arranged on a side of the balancing compartment C2 away from the battery compartment C1. The electrical compartment C3 can be used to place electronic components such as control circuits. Similarly, the electrical compartment C3 is independently arranged from the balancing compartment C2, and water vapor carried by the external airflow will not enter the electrical compartment C3, which can prevent water vapor from corroding the electronic components in the electrical compartment C3, thereby improving the reliability and service life of the electronic components.

[0092] Specifically in the embodiment, the voltage balancing module 20 includes a DCDC module and / or a PCS module.

[0093] In one embodiment of the present application, refer to Figures 1 to 3The energy storage container 100 includes a box body 10, a battery cluster, a voltage balancing module 20 and an exhaust device 30. The battery cluster is arranged in the battery compartment C1 of the box body 10, and four voltage balancing modules 20 are arranged in the balancing compartment C2 of the box body 10. A box door 11 is arranged on the box body 10 corresponding to the balancing compartment C2, and a protruding structure 11b is arranged on the box door 11. The protruding structure 11b has a wind shielding surface M2 and a wind outlet surface that are obliquely connected. An air inlet window 13 is arranged above the wind outlet surface, and an air outlet window 12 is arranged below the wind outlet surface. The air outlet S2 of each voltage balancing module 20 is arranged toward the outside of the box body 10, and the voltage balancing modules 20 are arranged in pairs to discharge air toward different sides of the box body 10, and are enclosed together to form an air inlet channel T1. The air inlet S1 of each voltage balancing module 20 is directly connected to the air inlet channel T1. An air passage T2 is formed between the voltage balancing module 20 and the top of the housing 10 . The air passage T2 is arranged opposite to the air inlet window 13 . The air outlet S2 of the voltage balancing module 20 is arranged opposite to the air outlet window 12 . The exhaust device 30 is arranged in the air inlet passage T1 .

[0094] In actual application, when the locomotive is running, the external airflow of the box 10 enters the air passage T2 from the upper air inlet window 13, and then flows into the air inlet duct from top to bottom under the action of the exhaust device 30, and then enters each voltage balancing module 20 through each air inlet S1, and finally is discharged to the outside of the box 10 through each air outlet S2 and the air outlet window 12.

[0095] In addition, an embodiment of the present application further provides a locomotive, including a locomotive head and the energy storage container 100 of the above embodiment, and the energy storage container 100 is used to supply power to the locomotive head.

[0096] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. An energy storage container, characterized in that: include: Box body (10); A voltage balancing module (20) and a battery cluster are arranged in the box (10), wherein the voltage balancing module (20) is connected to the battery cluster and is used to balance the voltage of each battery cluster; and An exhaust device (30) is provided on the box (10), and the exhaust device (30) is used to extract airflow outside the box (10) to dissipate heat for the voltage balancing module (20).

2. The energy storage container according to claim 1, characterized in that: The box body (10) comprises a wind passing surface (M1) located in the width direction thereof; an air outlet window (12) is provided on the wind passing surface (M1), and the air outlet window (12) is connected to the space where the voltage balancing module (20) is located; The internal space of the voltage balancing module (20) is used for the circulation of air flow extracted by the exhaust device (30), and the voltage balancing module (20) comprises an air outlet (S2) connected to its internal space, and the air outlet (S2) is connected to the air outlet window (12).

3. The energy storage container according to claim 2, characterized in that: The box body (10) further comprises a wind shielding surface (M2) located in the width direction thereof, wherein the wind shielding surface (M2) is located in front of the wind passing surface (M1) and is used to block airflow from flowing toward the wind passing surface (M1); The wind shielding surface (M2) is arranged to be inclined toward the rear of the box body (10).

4. The energy storage container according to claim 3, characterized in that: The box body (10) comprises a protruding structure (11b), the protruding structure (11b) is arranged to protrude outward along the width direction of the box body (10), and the protruding structure (11b) has the wind shielding surface (M2) and the wind passing surface (M1) connected to each other; The convex structure (11b) encloses and forms a concave cavity (q) open toward the interior of the box body (10); The protruding distance L of the protruding structure (11b) satisfies: 50mm≤L≤300mm.

5. The energy storage container according to claim 4, characterized in that: The energy storage container comprises a door (11), and the door (11) is capable of opening and closing a space on the box body (10) where the voltage balancing module (20) is located; the door (11) comprises the protruding structure (11b).

6. The energy storage container according to any one of claims 1 to 5, characterized in that: The energy storage container comprises a plurality of the voltage balancing modules (20), each of the voltage balancing modules (20) having an air outlet (S2) and an air inlet (S1) that are connected to each other, and the air outlet (S2) of each of the voltage balancing modules (20) is arranged toward the outside of the box body (10); All of the voltage balancing modules (20) are collectively enclosed to form an air inlet channel (T1) that is connected to each of the air inlets (S1), and the air exhaust device (30) is used to deliver the external airflow of the box body (10) into the air inlet channel (T1).

7. The energy storage container according to claim 6, characterized in that: An air passage (T2) is formed between the voltage balancing module (20) and the top of the housing (10); the housing (10) is provided with an air inlet window (13) and an air outlet window (12) in its width direction; the air inlet window (13) is located above the air outlet window (12); The air passage (T2) is connected between the air inlet window (13) and the air inlet passage (T1), and the air outlet window (12) is connected to the air outlet (S2) of the voltage balancing module (20).

8. The energy storage container according to claim 7, characterized in that: The voltage balancing module (20) comprises a cooling fan (21), and the exhaust device (30) comprises an exhaust fan (31) located in the air inlet channel (T1), and the exhaust fan (31) is located above the air inlet (S1) of the voltage balancing module (20); the cooling fan (21) is used to cause the airflow passing through the voltage balancing module (20) to flow out of the box (10).

9. The energy storage container according to any one of claims 1 to 5, characterized in that: The energy storage container comprises a battery compartment (C1) and a balancing compartment (C2) which are independently arranged, the battery cluster is located in the battery compartment (C1), and the voltage balancing module (20) is located in the balancing compartment (C2); The energy storage container further comprises an electrical compartment (C3), wherein the electrical compartment (C3) is independently arranged on a side of the balancing compartment (C2) away from the battery compartment (C1); The voltage balancing module (20) comprises a DCDC module and / or a PCS module.

10. A locomotive, characterized in that: It comprises a locomotive and an energy storage container as claimed in any one of claims 1 to 9, wherein the energy storage container is used to supply power to the locomotive.

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