Energy storage container

Abstract

The utility model provides an energy storage container which comprises a plurality of battery clusters arranged in sequence, and each battery cluster at least comprises a battery pack. The liquid inlet pipe group is respectively connected to each layer of battery pack of the first battery cluster along the arrangement direction; the liquid return pipe group is respectively connected to each layer of battery pack of the last battery cluster along the arrangement direction; the middle pipeline is used for communicating the adjacent battery packs at the same layer height in each battery cluster in series along the arrangement direction; the heat management unit is used for providing a heat exchange medium for the battery cluster. The heat management unit is communicated with the first battery cluster through the liquid inlet pipe group, the last battery cluster is communicated with the heat management unit through the liquid return pipe group, the adjacent battery packs at the same layer height are communicated in series, and each battery cluster can be communicated with the heat management unit only by using two-stage pipelines, so that the pipelines are saved, and the working efficiency is improved. And the heat exchange medium flows from the first cluster along the arrangement direction, the flows in the battery clusters of each cluster are the same, and the problem of flow imbalance between the battery clusters does not exist.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the energy storage technical field, especially a kind of energy storage container. BACKGROUND

[0002] The inside of energy storage container is generally provided with multiple battery clusters, each battery cluster is composed of multiple battery packs, battery packs will generate certain heat in working process or when energy storage container is located in cold zone, external temperature is low energy storage container internal temperature, in order to ensure the normal work of each battery pack, heat management system is usually provided in energy storage container, and heat exchange fluid is introduced into the pipeline of heat management system to cool or heat each battery pack.

[0003] The existing heat management system needs to set three levels of pipelines, main pipeline connects water cooling unit and first-level pipeline, first-level pipeline connects main pipeline and second-level pipeline, second-level pipeline connects first-level pipeline and the liquid inlet and liquid outlet of each battery pack;First-level pipeline is arranged at the liquid inlet and liquid outlet of each battery cluster along the height direction of battery cluster, the liquid inlet and liquid outlet of each battery cluster are provided with first-level pipeline, and main pipeline extends from the first cluster of battery cluster close to heat management system to the last cluster of battery cluster;Such arrangement mode leads to that the length of main pipeline is relatively long, the number of first-level pipeline is relatively large, and along the extension direction of main pipeline, the flow entering each first-level pipeline can be unbalanced, thereby the flow entering each battery cluster can be unbalanced. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an energy storage container, to solve the problems of too many pipelines and unbalanced flow between each battery cluster in the prior art.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides an energy storage container, comprising:

[0006] A plurality of battery clusters are arranged in sequence, each battery cluster comprises a plurality of battery packs stacked in sequence along the height direction of the battery cluster.

[0007] A liquid inlet pipe group is connected to each layer of battery pack of the first cluster of battery cluster along the arrangement direction.

[0008] A liquid return pipe group is connected to each layer of battery pack of the last cluster of battery cluster along the arrangement direction.

[0009] An intermediate pipeline is used to connect adjacent battery packs at the same height in each battery cluster along the arrangement direction.

[0010] A heat management unit for providing a heat exchange medium for the battery clusters, the inlet pipe group and the return pipe group are connected to the heat management unit.

[0011] Further, the inlet pipe group comprises a primary inlet pipe and a plurality of secondary inlet pipes, one end of the primary inlet pipe is in communication with a water outlet of the heat management unit, the other end of the primary inlet pipe is connected to the secondary inlet pipes, each of the secondary inlet pipes is in communication with an inlet of each layer of battery packs of the first battery cluster.

[0012] Further, the flow cross section of the primary inlet pipe is greater than or equal to the sum of the flow cross sections of each of the secondary inlet pipes.

[0013] Further, the return pipe group comprises a primary return pipe and a plurality of secondary return pipes, one end of the primary return pipe is in communication with a water inlet of the heat management unit, the other end of the primary return pipe is connected to the secondary return pipes, each of the secondary return pipes is in communication with an outlet of each layer of battery packs of the last battery cluster.

[0014] Further, the flow cross section of the primary return pipe is greater than or equal to the sum of the flow cross sections of each of the secondary return pipes.

[0015] Further, a flow regulating valve for regulating the inlet flow is arranged between each of the secondary inlet pipes and the primary inlet pipe, and a drain valve is arranged on the return pipe group.

[0016] Further, the intermediate pipe comprises a first segment, a second segment and a third segment connected in sequence, the first segment, the second segment and the third segment form a U shape after being connected.

[0017] Further, the arrangement direction of each of the battery clusters is perpendicular to the height direction of the battery clusters.

[0018] Further, at least two battery cluster groups are included, each of the battery cluster groups comprises at least two battery clusters, a total inlet pipe is connected to the water outlet of the heat management unit, a total return pipe is connected to the water inlet of the heat management unit, the total inlet pipe is in communication with the inlet pipe group of each of the battery clusters, and the total return pipe is in communication with the return pipe group of each of the battery clusters.

[0019] Further, a cabinet is included, and the plurality of battery clusters are arranged in the cabinet.

[0020] As described above, the utility model has following beneficial effects: this application passes liquid inlet pipe group with first cluster battery cluster intercommunication, liquid return pipe group with last cluster battery cluster and heat management unit intercommunication, same layer height's adjacent battery pack intercommunication through series connection mode, and then can only use two stage pipeline can make each battery cluster and heat management unit intercommunication, save pipeline, and heat exchange medium is all from first cluster along the arrangement direction flow, therefore each cluster's battery cluster's flow is same, and there is no flow imbalance problem between battery cluster and battery cluster, and the used pipeline is reduced, and the occupied internal space is also less. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A structure schematic view of the energy storage container provided by the utility model is shown in the figure.

[0022] Figure 2 A structure schematic view of the energy storage container provided by the utility model is shown in the figure. Figure 1 A structure schematic view of the energy storage container provided by the utility model is shown in the figure.

[0023] Figure 3 A structure schematic view of the energy storage container provided by the utility model is shown in the figure. Figure 1 A structure schematic view of the energy storage container provided by the utility model is shown in the figure.

[0024] Figure 4 A structure schematic view of the energy storage container provided by the utility model is shown in the figure.

[0025] Figure 5 A structure schematic view of the energy storage container provided by the utility model is shown in the figure. Figure 4 A structure schematic view of the energy storage container provided by the utility model is shown in the figure.

[0026] REFERENCE NUMERALS

[0027] 1-battery cluster, 2-battery pack, 3-first stage liquid inlet pipe, 4-first stage liquid return pipe, 5-second stage liquid inlet pipe, 6-second stage liquid return pipe, 7-intermediate pipeline, 8-heat management unit, 9-total liquid inlet pipe, 10-total liquid return pipe. DETAILED DESCRIPTION

[0028] The following specific embodiments illustrate the embodiments of the utility model, and those skilled in the art can easily understand other advantages and effects of the utility model from the contents disclosed in the specification.

[0029] It is to be understood that the structures, proportions, sizes, etc. shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the present specification, to be understood and read by those skilled in the art, and are not used to limit the implementation of the present application, so they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the present specification are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of the present application.

[0030] In order to describe the present application in detail, the energy storage container provided by the present application is specifically described as follows.

[0031] The present application provides an energy storage container, as shown in the drawings, Figure 1 The energy storage container includes a plurality of battery clusters 1 and a thermal management unit 8, wherein the plurality of battery clusters 1 are arranged in sequence, each battery cluster 1 includes at least one battery pack 2, and in the present embodiment, each battery cluster 1 includes a plurality of battery packs 2. The battery packs 2 in each battery cluster 1 are stacked in sequence along the height direction of the battery cluster 1, as shown in the drawings, Figure 1 In the drawings, six battery packs 2 are stacked from bottom to top in each battery cluster 1.

[0032] The thermal management unit 8 is installed on the side of the battery cluster 1. The thermal management unit 8 is used to provide heat exchange medium for the battery cluster 1. The thermal management unit 8 may, for example, include a refrigeration unit and a power pump group. The battery cluster 1 and the thermal management unit 8 are communicated through a liquid inlet pipe group and a liquid return pipe group. The heat exchange medium is introduced from the thermal management unit 8 into the battery cluster 1 through the liquid inlet pipe group, and after the heat exchange is completed, the heat exchange medium is sent back to the thermal management unit 8 through the liquid return pipe group. The thermal management unit 8, the liquid inlet pipe group, the battery cluster 1 and the liquid return pipe group form a cycle.

[0033] In some embodiments, the arrangement direction of the plurality of battery clusters 1 is perpendicular to the height direction of the battery cluster 1. When we regard the battery cluster 1 as a structure with a certain height, width and length, this arrangement makes the battery cluster 1 present a linear layout. In this layout, the plurality of battery clusters 1 are arranged in sequence along a horizontal direction. Figure 1 In the drawings, the arrangement direction of each battery cluster 1 is perpendicular to the height direction of the battery cluster 1, that is, a linear type is adopted. This arrangement has the characteristics of intuitive simplicity, easy installation and maintenance, and can effectively reduce the difficulty of work and improve the work efficiency in actual operation.

[0034] In some embodiments, the battery clusters 1 can also be arranged in other shapes, such as U-shaped or zigzag-shaped square wave-shaped, etc.

[0035] In some embodiments, in order to meet the needs, multiple rows of battery clusters 1 can also be arranged, which cooperate with each other to further enhance the overall performance of the battery pack. The arrangement of each row of battery clusters 1 can be the same or different, and the heat management unit 8 can also be multiple, for example, each of the rows of battery clusters is provided with a heat management unit 8.

[0036] The intermediate pipeline 7 connects the battery packs 2 at the same height in adjacent battery clusters to series connect the battery clusters in the arrangement direction. In some embodiments, the intermediate pipeline 7 connects the battery packs 2 at the same height in adjacent battery clusters in the arrangement direction to series connect the battery clusters in a straight line. Taking the battery cluster 1 arranged in a straight line as an example, starting from the first battery cluster 1, the adjacent battery clusters 1 at the same height are connected in sequence according to the arrangement order, and the battery packs 2 in each battery cluster 1 at the same height are series connected in sequence along the arrangement direction, as shown in Figure 1 and 2 Each battery pack 2 transversely is connected in sequence by the intermediate pipeline 7. One end of the intermediate pipeline 7 is connected to the liquid outlet of the left battery pack 2, and the other end is connected to the liquid inlet of the right battery pack 2. In this way, the entire battery cluster 1 finally forms a series connection structure. This series connection structure enables the heat exchange medium to flow through each battery cluster 1 in sequence according to the predetermined path, and this structure enables the flow of the heat exchange medium through the heat exchange medium of each battery pack at the same height to be the same, which is beneficial to uniform heat dissipation between each battery pack at the same height.

[0037] In some embodiments, as shown in Figure 3 The intermediate pipeline 7 includes a first segment, a second segment and a third segment connected in sequence, the first segment, the second segment and the third segment are bent to form a U-shaped, the first segment and the third segment have the same length, so that the second segment is parallel to the battery pack 2, which is beneficial to the flow of the heat exchange medium and improves the heat exchange efficiency.

[0038] In some embodiments, the size of each intermediate pipeline 7 is the same, that is, the flow cross section of each intermediate pipeline 7 is the same, which is beneficial to the uniform flow of the heat exchange medium and further beneficial to the uniform heat dissipation of each battery pack.

[0039] In some embodiments, the liquid inlet pipe group connects the heat management unit 8 and the first cluster of battery clusters 1, one end of the liquid inlet pipe group is connected to the heat management unit 8, and the other end is connected to each layer of battery packs 2 of the first cluster of battery clusters in the arrangement direction.

[0040] In some embodiments, the liquid inlet pipe group includes a first segment, a second segment and a third segment connected in sequence, the first segment, the second segment and the third segment are bent to form a U-shaped, the first segment and the third segment have the same length, so that the second segment is parallel to the battery pack 2, which is beneficial to the flow of the heat exchange medium and improves the heat exchange efficiency. Figure 1As shown, the liquid inlet pipe group includes a primary liquid inlet pipe 3 and a plurality of secondary liquid inlet pipes 5. One end of the primary liquid inlet pipe 3 is in communication with the water outlet of the thermal management unit 8, and the other end of the primary liquid inlet pipe 3 is in communication with the secondary liquid inlet pipes 5. Each secondary liquid inlet pipe 5 is in communication with the liquid inlet of each layer of battery packs 2 of the first cluster of battery clusters 1, and each secondary liquid inlet pipe 5 is arranged in parallel. Each battery pack 2 of the first cluster of battery clusters 1 is connected with a secondary liquid inlet pipe 5, and a plurality of secondary liquid inlet pipes 5 are arranged in parallel and then in communication with the primary liquid inlet pipe 3.

[0041] In some embodiments, in order to ensure that the heat exchange medium is evenly distributed into each secondary liquid inlet pipe 5, so that the amount of heat exchange medium entering each layer of battery packs 2 is the same, a flow regulating valve is installed at the end of each secondary liquid inlet pipe 5 close to the primary liquid inlet pipe 3. The flow regulating valve adjusts the flow into each secondary liquid inlet pipe 5, and the flow regulating valve can make the flow into each secondary liquid inlet pipe 5 the same, so as to facilitate uniform heat dissipation or heating of each battery pack. Alternatively, the flow into each secondary liquid inlet pipe 5 can be different according to the working conditions of different battery packs, so that each battery pack obtains heat dissipation or heating matching its working conditions.

[0042] In some embodiments, the diameters of each secondary liquid inlet pipe 5 are the same, and the flow cross section of the primary liquid inlet pipe 3 is not less than the sum of the flow cross sections of each secondary liquid inlet pipe 5, that is, the flow cross section of the primary liquid inlet pipe 3 is greater than or equal to the sum of the flow cross sections of each secondary liquid inlet pipe 5. In this way, the flow of the heat exchange medium is not affected and the flow resistance of the heat exchange medium is not increased. If the flow cross section of the primary liquid inlet pipe 3 is less than the sum of the flow cross sections of each secondary liquid inlet pipe 5, a flow bottleneck may be formed at the primary liquid inlet pipe 3, which causes the heat exchange medium to be unable to be timely and sufficient distributed to each secondary liquid inlet pipe 5, thereby affecting the heat dissipation or heating effect of the battery cluster 1. If the primary liquid inlet pipe 3 has a sufficiently large flow cross section, the heat exchange medium flowing out of the water outlet of the thermal management unit 8 can be smoothly distributed into each secondary liquid inlet pipe 5, meeting the flow demand of each layer of battery packs 2 for the heat exchange medium. In the process of liquid flow, if the flow cross section of the primary liquid inlet pipe 3 is too small, the liquid flow speed increases, and the pressure fluctuation increases, which may cause pipe vibration and noise. Stable pressure is crucial for each secondary liquid inlet pipe 5 to evenly distribute the flow, and excessive pressure fluctuation causes unstable flow in some secondary liquid inlet pipes 5, affecting the heat exchange effect of the battery pack 2.

[0043] In some embodiments, the thermal management unit 8 is in communication with the last cluster of battery clusters 1 through a liquid return pipe group. One end of the liquid return pipe group is in communication with the water inlet of the thermal management unit 8, and the other end is in communication with each layer of battery packs 2 of the last cluster of battery clusters along the arrangement direction.

[0044] Among them, as shown in FIG. 1, Figure 1As shown, the liquid return pipe group includes a primary liquid return pipe 4 and a plurality of secondary liquid return pipes 6. One end of the primary liquid return pipe 4 is in communication with the water inlet of the thermal management unit 8, and the other end of the primary liquid return pipe 4 is connected with the secondary liquid return pipes 6. Each secondary liquid return pipe 6 is in communication with the liquid outlet of each layer of battery pack 2 of the last cluster of battery clusters 1. The plurality of secondary liquid return pipes 6 form a parallel structure and finally enter the thermal management unit 8 through the primary liquid return pipe 4. The plurality of secondary liquid return pipes 6 form a parallel structure, and the secondary liquid return pipes 6 correspond one-to-one with the secondary liquid inlet pipes 5, so that the heat-exchanged heat exchange medium can quickly flow into the primary liquid return pipe 4, ensuring smooth flow of the heat exchange medium.

[0045] The secondary liquid return pipe 6 has the same shape as the primary liquid inlet pipe 3, both of which are L-shaped and have a circular arc transition at the turning, which is conducive to reducing the flow resistance of the heat exchange medium.

[0046] In order to ensure smooth flow of the heat exchange medium, the flow cross section of the primary liquid return pipe 4 is greater than or equal to the sum of the flow cross sections of each secondary liquid return pipe 6. During the liquid return process, liquid blockage, uneven flow, and other problems caused by a too small flow cross section can be effectively avoided, ensuring that the heat exchange medium can smoothly flow from each secondary liquid return pipe 6 to the primary liquid return pipe 4 and finally stably enter the water inlet of the thermal management unit 8, thereby ensuring normal operation of the energy storage container.

[0047] A drain valve is provided on the liquid return pipe group. When the energy storage container is normally operating, the drain valve is closed, the heat exchange medium enters the primary liquid return pipe 4 through the secondary liquid return pipe 6, and finally returns to the thermal management unit 8. When maintenance, repair, or other operations are required, the drain valve is opened, and the heat exchange medium is discharged.

[0048] In some embodiments, as shown in Figure 1 and Figure 2 The primary liquid inlet pipe 3 directly communicates the thermal management unit 8 with the first cluster of battery clusters 1, and the primary liquid return pipe 4 directly communicates the thermal management unit 8 with the last cluster of battery clusters 1. The liquid inlet pipe group and the liquid return pipe group only need two different pipes, the structure is simple, which is conducive to reducing the number of materials and reducing the processing difficulty.

[0049] In some embodiments, as shown in Figure 4 and Figure 5As shown, the energy storage container includes at least two battery cluster groups, each battery cluster group includes at least two battery clusters 1, and the plurality of battery cluster groups form a parallel structure. The outlet of the heat management unit 8 is connected with a total liquid inlet pipe 9, and the primary liquid inlet pipe 3 of the liquid inlet pipe group of each battery cluster group is communicated with the total liquid inlet pipe 9; the inlet of the heat management unit 8 is connected with a total liquid return pipe 10, and the primary liquid return pipe 4 of the liquid return pipe group of each battery cluster group is communicated with the total liquid return pipe 10. That is, a plurality of battery cluster groups are arranged in the energy storage container, each battery cluster group is provided with a liquid inlet pipe group and a liquid return pipe group, and the adjacent battery packs at the same height in each battery cluster group are communicated in series through the intermediate pipe 7 along the arrangement direction.

[0050] As shown, Figure 4 two battery clusters 1 form a battery cluster group, and each battery cluster group is provided with a primary liquid inlet pipe 3 and a primary liquid return pipe 4. Compared with the case that each battery cluster 1 is provided with a primary liquid inlet pipe 3 and a primary liquid return pipe 4, 50% of the primary liquid inlet pipe 3 and the primary liquid return pipe 4 are saved. At the same time, compared with the case that the total liquid inlet pipe 9 extends from the outlet of the heat management unit 8 to the liquid inlet of the last battery cluster 1, at least two battery clusters 1 are connected in series through the intermediate pipe 7, which not only reduces the number of primary liquid inlet pipes 3 and primary liquid return pipes 4, but also shortens the length of the total liquid inlet pipe 9.

[0051] In some embodiments, the flow cross section of the total liquid inlet pipe 9 is greater than or equal to the sum of the flow cross sections of each primary liquid inlet pipe 3, and the flow cross section of the total liquid return pipe 10 is greater than or equal to the sum of the flow cross sections of each primary liquid return pipe 4. In this way, the flow resistance of the heat exchange medium can be reduced, and at the same time, the flow bottleneck can not be formed.

[0052] In some embodiments, the energy storage container further includes a box body, and the plurality of battery clusters 1 and the heat management unit 8 are installed in the box body. The box body protects the battery clusters 1 and the heat management unit 8 and other structures in the box body.

[0053] A partition plate can be arranged between the battery cluster 1 and the heat management unit 8 in the box body to separate the battery cluster 1 and the heat management unit 8. Each battery pack 2 in the same battery cluster 1 is correspondingly provided with a heat exchange plate, and the heat exchange plate is provided with a heat exchange flow channel. The heat exchange medium circulates in the heat management unit 8, the liquid inlet pipe group, the heat exchange plate, the intermediate pipe 7 and the liquid return pipe group.

[0054] The above embodiments only exemplarily illustrate the principle and effect of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. An energy storage container, characterized by, The application relates to a battery cluster arrangement. The battery cluster arrangement comprises: a plurality of battery clusters arranged in sequence, each of the battery clusters comprising a plurality of battery packs stacked in sequence along the height direction of the battery cluster; a liquid inlet pipe group connected to each of the battery packs of the first battery cluster along the arrangement direction; a liquid outlet pipe group connected to each of the battery packs of the last battery cluster along the arrangement direction; an intermediate pipe for connecting adjacent battery packs at the same height in each of the battery clusters along the arrangement direction; and a heat management unit for providing a heat exchange medium for the battery clusters, wherein the liquid inlet pipe group and the liquid outlet pipe group are both connected to the heat management unit. The liquid inlet pipe group comprises a primary liquid inlet pipe and a plurality of secondary liquid inlet pipes, one end of the primary liquid inlet pipe being connected to the water outlet of the heat management unit, the other end of the primary liquid inlet pipe being connected to the secondary liquid inlet pipes, and each of the secondary liquid inlet pipes being connected to the liquid inlet of each of the battery packs of the first battery cluster. The flow cross section of the primary liquid inlet pipe is greater than or equal to the sum of the flow cross sections of the secondary liquid inlet pipes. The liquid outlet pipe group comprises a primary liquid outlet pipe and a plurality of secondary liquid outlet pipes, one end of the primary liquid outlet pipe being connected to the water inlet of the heat management unit, the other end of the primary liquid outlet pipe being connected to the secondary liquid outlet pipes, and each of the secondary liquid outlet pipes being connected to the liquid outlet of each of the battery packs of the last battery cluster. The flow cross section of the primary liquid outlet pipe is greater than or equal to the sum of the flow cross sections of the secondary liquid outlet pipes.

2. The energy storage container of claim 1, wherein, A flow regulating valve for regulating the liquid inlet amount is arranged between each of the secondary liquid inlet pipes and the primary liquid inlet pipe, and a drain valve is arranged on the liquid outlet pipe group.

3. The energy storage container of claim 2, wherein, The intermediate pipe comprises a first section, a second section and a third section connected in sequence, and the first section, the second section and the third section form a U shape after being connected.

4. The energy storage container of claim 1, wherein, The arrangement direction of each of the battery clusters is perpendicular to the height direction of the battery cluster.

5. The energy storage container of claim 4, wherein, The battery cluster arrangement comprises at least two battery cluster groups, each of the battery cluster groups comprising at least two battery clusters, the water outlet of the heat management unit being connected to a total liquid inlet pipe, the water inlet of the heat management unit being connected to a total liquid outlet pipe, the total liquid inlet pipe being connected to the liquid inlet pipe group of each of the battery clusters, and the total liquid outlet pipe being connected to the liquid outlet pipe group of each of the battery clusters.

6. The energy storage container of claim 2, wherein, The battery cluster arrangement further comprises a box, and the plurality of battery clusters are arranged in the box.

7. The energy storage container of claim 1, wherein, ​ 8. The energy storage container of claim 1, wherein, ​ 9. The energy storage container of claim 1, wherein, ​ 10. The energy storage container of any of claims 1-9, wherein, ​

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