Energy storage module and energy storage system
By designing a multi-layered exhaust structure in the energy storage module, the problem of difficult directional exhaust of high-temperature and high-pressure gas during thermal runaway is solved, achieving efficient and safe gas exhaust and improving the safety performance of the energy storage module.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CALB GROUP CO LTD
- Filing Date
- 2025-09-12
- Publication Date
- 2026-08-04
AI Technical Summary
In the event of thermal runaway, existing energy storage modules cannot efficiently and directionally expel high-temperature, high-pressure gases, posing a risk of secondary hazards and affecting safety performance.
A multi-layer smoke exhaust structure was designed, including the explosion-proof valve of the battery cell, the first smoke exhaust chamber, the second smoke exhaust chamber and the third smoke exhaust chamber. The connecting column and the smoke exhaust hole form a directional smoke exhaust path to ensure efficient gas discharge.
It achieves efficient and directional discharge of high-temperature and high-pressure gases, reduces the probability of secondary hazards, and improves the safety of energy storage modules.
Smart Images
Figure CN224595726U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of energy storage technology, and in particular to an energy storage module and an energy storage system. Background Technology
[0002] An Energy Storage System (ESS) is a systematic device or solution that uses specific technologies to store, regulate, and release energy in the form of electrical, thermal, or chemical energy, thereby optimizing the allocation of energy in the "time dimension" or "spatial dimension." Due to its advantages such as high energy density, long lifespan, high rated voltage, high power handling capability, and low self-discharge rate, lithium batteries have gradually become the mainstream energy storage product.
[0003] However, due to the large amount of organic electrolyte inside the battery, battery-type energy storage modules pose certain safety risks during use. In the event of thermal runaway, the explosion-proof valve will release a large amount of flammable gases such as H2 and CO. If these flammable gases are not quickly released to the outside air in time, they may further cause the battery to explode or other secondary hazards if they come into contact with sparks or high-temperature surfaces, thus affecting the safety performance of the energy storage device.
[0004] Therefore, there is an urgent need for an energy storage module and energy storage system to solve the above problems. Utility Model Content
[0005] Based on the above, one of the objectives of this utility model is to provide an energy storage module with more exhaust space, which can efficiently and directionally exhaust high-temperature gases and has higher safety.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] Energy storage modules, including:
[0008] Two or more battery packs are arranged vertically. Each battery pack includes a base plate perpendicular to the vertical direction and battery cells disposed on the base plate. Each battery cell includes multiple individual battery cells disposed along a first horizontal direction and end plates disposed at both ends of the multiple individual battery cells along the first horizontal direction. The battery pack also includes an exhaust pipe disposed at one end of each battery cell along a second horizontal direction. The exhaust pipe contains a first smoke exhaust chamber, which is connected to the explosion-proof valves of the multiple individual battery cells. The end plates contain a second smoke exhaust chamber connected to the first smoke exhaust chamber. The second horizontal direction is perpendicular to the first horizontal direction.
[0009] A connecting post is disposed on at least one side of the battery pack along the first horizontal direction and is connected to at least two end plates. The connecting post is provided with a third smoke exhaust chamber communicating with the second smoke exhaust chamber and a smoke exhaust hole communicating with the third smoke exhaust chamber.
[0010] The beneficial effects of this utility model are as follows:
[0011] The energy storage module of this utility model includes two or more battery packs. Each battery pack includes a base plate perpendicular to the vertical direction and battery cells disposed on the base plate. Each battery cell includes multiple individual battery cells. The base plate is used to support and integrate multiple battery cells. Each battery cell is equipped with an explosion-proof valve. The battery pack is also equipped with an exhaust pipe, and a first exhaust chamber is provided in the exhaust pipe. The first exhaust chamber is connected to the explosion-proof valve of each battery cell in the battery pack. That is, when any battery cell experiences thermal runaway, the high-temperature and high-pressure gas can flow directionally to the first exhaust chamber after opening the explosion-proof valve. The battery cell is also equipped with an end plate. The end plate not only fixes multiple battery cells, but also has a second exhaust chamber connected to the first exhaust chamber. By providing the second exhaust chamber, it is beneficial to increase the directional exhaust space and increase the flow path of thermal runaway gas. Meanwhile, the energy storage module is also equipped with connecting columns. These columns connect to at least two end plates, improving the structural strength of the module. They also connect to a third exhaust chamber, which communicates with the second exhaust chamber, further increasing the directional exhaust space and the flow path for high-temperature, high-pressure gases. Additionally, the connecting columns have exhaust holes for ultimately discharging the gas outside the energy storage module. In summary, when a battery cell in the above-mentioned energy storage module experiences thermal failure, the gas flow path is: explosion-proof valve, first exhaust chamber, second exhaust chamber, third exhaust chamber, and exhaust hole. The larger exhaust space and longer gas flow path of the energy storage module allow for efficient and directional discharge of high-temperature, high-pressure gases during thermal runaway, reducing the probability of secondary hazards and increasing safety.
[0012] Based on the above, the second objective of this utility model is to provide an energy storage system that can directionally discharge gas in the event of thermal runaway, thus improving safety performance.
[0013] An energy storage system includes an energy storage container and an energy storage module as described in any of the above embodiments, wherein the energy storage module is disposed within the energy storage container.
[0014] The beneficial effects of this utility model are as follows:
[0015] The energy storage system of this utility model is equipped with the above-mentioned energy storage module. When the battery cell experiences thermal failure, the gas can be discharged in a directional manner along the explosion-proof valve, the first smoke exhaust chamber, the second smoke exhaust chamber, the third smoke exhaust chamber and the smoke exhaust hole, effectively reducing secondary hazards and improving safety performance. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of an energy storage module provided in a specific embodiment of the present invention;
[0018] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle;
[0019] Figure 3 This is a side view of the energy storage module provided in a specific embodiment of this utility model;
[0020] Figure 4 This is a front view of the energy storage module provided in a specific embodiment of this utility model;
[0021] Figure 5 This is a schematic diagram of the energy storage module provided in a specific embodiment of the present invention from another perspective;
[0022] Figure 6 yes Figure 5 A magnified view of a portion of point B in the middle.
[0023] In the picture:
[0024] 100. Battery pack; 110. Battery cell; 111. Battery cell; 112. End plate; 1121. Reinforcing rib; 120. Exhaust pipe; 121. Smoke baffle; 122. Valve mounting hole; 123. Through hole; 130. Base plate;
[0025] 200, connecting column; 210, smoke exhaust hole; 220, mounting hole. Detailed Implementation
[0026] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.
[0028] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0031] like Figures 1-6As shown, this embodiment provides an energy storage module, which includes a connecting post 200 and two or more battery packs 100 along a vertical direction. Each battery pack 100 includes a base plate 130 perpendicular to the vertical direction and battery cells 110 disposed on the base plate 130. Each battery cell 110 includes multiple battery units 111 disposed along a first horizontal direction, and end plates 112 disposed at both ends of the multiple battery units 111 along the first horizontal direction. The battery pack 100 also includes an exhaust pipe 120 disposed on the battery cells 110. At one end along the second horizontal direction, the exhaust pipe 120 is provided with a first exhaust chamber, which is connected to the explosion-proof valves of multiple battery cells 111; the end plate 112 is provided with a second exhaust chamber connected to the first exhaust chamber; the second horizontal direction is perpendicular to the first horizontal direction; the connecting post 200 is provided on at least one side of the battery pack 100 along the first horizontal direction and is connected to at least two end plates 112; the connecting post 200 is provided with a third exhaust chamber connected to the second exhaust chamber and an exhaust hole 210 connected to the third exhaust chamber.
[0032] The energy storage module includes two or more battery packs 100. Each battery pack 100 includes a base plate 130 perpendicular to the vertical direction and battery cells 110 disposed on the base plate 130. Each battery cell 110 includes multiple battery units 111. The base plate 130 is used to support and integrate multiple battery units 111. Each battery unit 111 is equipped with an explosion-proof valve. The battery pack 100 is also equipped with an exhaust pipe 120. The exhaust pipe 120 has a first exhaust chamber. The first exhaust chamber is connected to the explosion-proof valve of each battery unit 111. That is, when any battery unit 111 experiences thermal runaway, the high-temperature and high-pressure gas can flow directionally to the first exhaust chamber after opening the explosion-proof valve. The battery unit 110 is also provided with an end plate 112. The end plate 112 not only fixes multiple battery cells 111, but also has a second exhaust chamber that communicates with the first exhaust chamber. By providing the second exhaust chamber, it is beneficial to increase the directional exhaust space and increase the flow path of thermal runaway gas. Meanwhile, the energy storage module is also provided with a connecting post 200. The connecting post 200, on the one hand, improves the structural strength of the energy storage module by connecting to at least two end plates 112, and on the other hand, has a third exhaust chamber that communicates with the second exhaust chamber, further increasing the directional exhaust space and increasing the flow path of high-temperature, high-pressure gas. In addition, the connecting post 200 is also provided with an exhaust port 210 for finally discharging the gas outside the energy storage module. In summary, when the battery cell 111 of the above-mentioned energy storage module experiences thermal failure, the gas flow path is: explosion-proof valve, first exhaust chamber, second exhaust chamber, third exhaust chamber and exhaust hole 210. The energy storage module has a larger exhaust space and a longer gas flow path, which enables the high-temperature and high-pressure gas to be efficiently and directionally discharged from the energy storage module during thermal runaway, reducing the probability of secondary hazards and increasing safety.
[0033] It is worth noting that the battery cell 111 is the smallest independent electrical energy storage and output unit that constitutes the energy storage module. It refers to a basic functional device that achieves the mutual conversion of "chemical energy" and "electrical energy" through a specific combination of core materials such as electrodes, electrolytes, and separators, based on electrochemical reactions (such as lithium-ion intercalation / deintercalation and the redox reaction of lead-acid). Essentially, it is a unit capable of independently completing the charging (energy storage) and discharging (energy release) processes, and cannot be further broken down into smaller units that still possess complete electrical energy conversion functions. Multiple battery cells 111 are connected in series and parallel based on structures such as busbars and insulators to form a battery unit 110.
[0034] It is understood that the exhaust pipe 120 is provided with through holes 123 corresponding to the explosion-proof valves of the battery cells 111. The through holes 123 and the explosion-proof valves are sealed together to prevent the leakage of high-temperature and high-pressure gas at the connection. Preferably, the explosion-proof valves are connected to the through holes 123 through a one-way valve or other structure with an anti-backflow mechanism to prevent the backflow of high-temperature and high-pressure flue gas, and to prevent the high-temperature and high-pressure flue gas generated by the battery cells 111 that have experienced thermal runaway from affecting other battery cells 111, effectively avoiding secondary hazards. The above-mentioned sealing and anti-backflow structures can be set with reference to existing technology and are not specifically limited here.
[0035] In this embodiment, the battery pack 100 is provided with two battery cells 110, which are spaced apart on the base plate 130 along the second horizontal direction. The use of two battery cells 110 improves the energy storage capacity of the battery pack 100. Simultaneously, an exhaust pipe 120 is also provided on the base plate 130 between the two battery cells 110 and is connected to the explosion-proof valves of the individual battery cells 111 of both battery cells 110. This means that the two battery cells 110 of the battery pack 100 achieve directional smoke exhaust through one exhaust pipe 120, which helps to improve the energy density of the battery pack 100 while ensuring reliable smoke exhaust. Specifically, the exhaust pipe 120 has through holes 123 on both sides along the second horizontal direction, corresponding to the individual battery cells 111 of the two battery cells 110 respectively.
[0036] Preferably, a smoke baffle 121 is provided inside the exhaust pipe 120 to divide the exhaust pipe 120 into two smoke exhaust sub-cavities, each corresponding to one battery unit 110. By providing the smoke baffle 121, the smoke from the two battery units 110 can be effectively isolated, thereby effectively preventing thermal runaway from spreading between the two battery units 110. Specifically, the smoke baffle 121 is parallel to the vertical plane and is welded to the inner wall of the exhaust pipe 120 on all four sides.
[0037] For example, the volume of the first smoke exhaust chamber is A1mm. 3The number of battery cells 111 connected to the first exhaust chamber is B, where 500 ≤ A1 / B ≤ 5000. It is understandable that the more battery cells 111 connected to the exhaust pipe 120, the larger the required volume of the first exhaust chamber is to ensure sufficient capacity to contain thermal runaway gases. The ratio of the volume of the first exhaust chamber to the number of battery cells 111 connected to it needs to consider factors such as smooth exhaust and space utilization. If this ratio is set too high, it will cause redundancy in the area of the first exhaust chamber, reducing space utilization and lowering the energy density of the energy storage module. If this ratio is set too low, the space for containing thermal runaway gases will be smaller, leading to excessive gas accumulation in the first exhaust chamber, increasing the risk of pressure increase, and reducing the safety of the energy storage module. For example, A / B can be set to 500, 1500, 2000, 2500, 3000, 3500, 4000, 4500, 5000, etc., or other values that satisfy the above-mentioned limitations.
[0038] Optionally, the two battery cells 110 have the same number of individual battery cells 111, making the energy of the two battery cells 110 more similar and facilitating installation and assembly; at the same time, the two exhaust sub-cavities have the same volume, making the ability to prevent thermal runaway propagation of each battery cell 110 more consistent. Understandably, the volume of the exhaust sub-cavities also needs to meet the numerical limit of A / B.
[0039] For example, the volume of the first smoke exhaust chamber is A1mm. 3 10 4 mm 3 ≤A1mm 3 ≤2*10 5 mm 3 Specifically, A1mm 3 Set to 10 4 mm 3 2*10 4 mm 3 4*10 4 mm 3 6*10 4 mm 3 8*10 4 mm 3 10 5 mm 3 2*10 5 mm 3 The number of battery cells 111 connected to the first exhaust chamber is B, where 6 ≤ B ≤ 200; specifically, B can be set to 6, 10, 30, 50, 100, 150, 180, 200, etc., or other values that meet the above-mentioned limitations.
[0040] Preferably, a safety valve is provided on the exhaust pipe 120, which can open at a preset pressure. By providing the safety valve, when the gas in the first exhaust chamber is at a pressure greater than or equal to the preset pressure and cannot be discharged in time through the second exhaust chamber, the pressure can be quickly released by opening the safety valve, so as to achieve rapid exhaust in further special circumstances and improve the safety of the energy storage module. For example, a valve mounting hole 122 is provided at one end of the exhaust pipe 120 along the first horizontal direction, and the safety valve is provided in the valve mounting hole 122 to prevent the gas flowing out through the safety valve from causing damage to the vertically adjacent battery pack 100.
[0041] In this embodiment, the first smoke exhaust chamber and the second smoke exhaust chamber are connected by a first connecting hole, the area of which is S1mm. 2 1000mm 2 ≤S1mm 2 ≤6000mm 2 By limiting the area of the first connecting hole, the gas can flow smoothly from the first exhaust chamber to the second exhaust chamber. Optionally, the area of the first connecting hole should not be set too large, as an excessively large area will increase the thickness of the end plate 112, reducing both energy density and structural strength. Conversely, the area of the first connecting hole should not be set too small, as an excessively small area will result in high gas flow resistance and excessively slow gas flow velocity during thermal failure. For example, S1mm 2 Set to 1000mm 3 2000mm 3 3000mm 3 4000mm 3 5000mm 3 16000mm 3 etc., or other values that meet the above limitations.
[0042] Similarly, the second and third smoke exhaust chambers are connected by a second connecting hole with an area of S²mm. 2 1000mm 2 ≤S2≤6000mm 2 By limiting the area of the second connecting hole, it is ensured that gas can flow smoothly from the second exhaust chamber to the third exhaust chamber. Optionally, the area of the second connecting hole should not be set too large, as an excessively large area will increase the width of the connecting column 200, increasing both weight and cost. Conversely, the area of the second connecting hole should not be set too small, as an excessively small area will result in high gas flow resistance and excessively slow gas flow velocity in the event of thermal failure. For example, S2mm 2 Set to 1000mm 3 2000mm 3 3000mm3 4000mm 3 5000mm 3 16000mm 3 etc., or other values that meet the above limitations.
[0043] Preferably, the positions of the first and second connecting holes are both set to be similar to those of the through holes, and the one-way valve or other structure has an anti-backflow structure to ensure one-way gas flow and avoid secondary damage caused by gas backflow.
[0044] In this embodiment, the thickness of the battery cell 111 along the first horizontal direction is W1 mm, and the thickness of the end plate 112 along the first horizontal direction is W2 mm, where 0.1 ≤ W2 / W1 ≤ 1. If the above ratio is set too small, the volume of the second exhaust chamber will decrease, resulting in a smaller overall exhaust space for the energy storage module and reducing the energy storage module's ability to withstand thermal failure. If the above ratio is set too large, the thickness of the end plate 112 will increase, leading to a decrease in the structural strength of the end plate 112. For example, W2 / W1 is set to 0.1, 0.2, 0.4, 0.6, 0.8, 1, etc., or other values that satisfy the above-defined limits.
[0045] For example, the thickness of the battery cell 111 along the first horizontal direction is W1mm, where 20mm ≤ W1mm ≤ 200mm; specifically, W1mm is set to 20mm, 40mm, 70mm, 100mm, 150mm, 200mm, etc., or other values that satisfy the above-mentioned limitations. The thickness of the end plate 112 along the first horizontal direction is W2mm, where 10mm ≤ W2mm ≤ 50mm; specifically, W2mm is set to 10mm, 15mm, 25mm, 30mm, 40mm, 50mm, etc., or other values that satisfy the above-mentioned limitations.
[0046] Optionally, to increase the structural strength of the end plate 112, a reinforcing rib 1121 is provided in the second exhaust cavity. At the same time, the reinforcing rib 1121 extends along the second horizontal direction, which means that while increasing the structural strength of the end plate 112, the setting of the reinforcing rib 1121 will not affect the flow in the second exhaust cavity, thus ensuring smooth gas flow in the event of thermal failure.
[0047] Specifically, the thickness of the battery cell 111 along the first horizontal direction is W1mm, and the thickness of the connecting post 200 along the first horizontal direction is W3mm, where 0.1 ≤ W3 / W1 ≤ 1. If the above ratio is set too small, the volume of the third exhaust chamber will be reduced. If the above ratio is set too large, the connecting post 200 will occupy too much space along the first horizontal direction, reducing the energy density of the energy storage module. For example, W3 / W1 can be set to 0.1, 0.2, 0.4, 0.6, 0.8, 1, or other values that satisfy the above-mentioned limitations. In addition, the thickness of the connecting post 200 along the first horizontal direction is W3mm, where 10mm ≤ W3mm ≤ 50mm. Specifically, W3mm can be set to 10mm, 15mm, 25mm, 30mm, 40mm, 50mm, or other values that satisfy the above-mentioned limitations.
[0048] In this embodiment, the connecting post 200 extends vertically and connects to the end plates 112 of both battery packs 100. In this case, the connecting post 200 not only improves the connection strength between the two battery packs 100 but also facilitates smoke extraction from the two end plates 112. It is worth noting that the connecting post 200 can also extend at an angle to the vertical direction. In this case, the connecting post 200 may also connect to the end plates 112 of two battery cells 110 within the same battery pack 100. In this case, the connecting post 200 can further improve the connection strength of the same battery pack 100 and facilitate smoke extraction from the same battery pack 100.
[0049] Furthermore, in the scheme where the connecting post 200 extends vertically, the length of the end plate 112 along the second horizontal direction is L1 mm, and the width of the connecting post 200 along the second horizontal direction is L2 mm, where 0.05 ≤ L2 / L1 ≤ 1. If the above ratio is set too small, the volume of the third exhaust chamber will decrease, and the connection and structural reinforcement effect of the connecting post 200 on the battery pack 100 will be weakened. If the above ratio is set too large, the connecting post 200 will cover too much area of the end plate 112, affecting the heat dissipation of the battery unit 110. For example, L2 / L1 can be set to 0.05, 0.1, 0.2, 0.4, 0.6, 0.8, 1, or other values that satisfy the above limitations.
[0050] For example, the length of the end plate 112 along the second horizontal direction is L1mm, where 200mm ≤ L1mm ≤ 1000mm; specifically, L1mm is set to 200mm, 300mm, 500mm, 800mm, 1000mm, etc., or other values that satisfy the above-mentioned limitations. The width of the connecting post 200 along the second horizontal direction is L2mm, where 20mm ≤ L2mm ≤ 100mm; specifically, L2mm is set to 20mm, 25mm, 45mm, 70mm, 90mm, 100mm, etc., or other values that satisfy the above-mentioned limitations.
[0051] In this embodiment, at least two connecting posts 200 are provided on one side of the battery unit 110 along the second horizontal direction. This is beneficial for improving the structural strength of the battery unit 110 along the second horizontal direction and increasing the volume of the third exhaust chamber. At the same time, it is beneficial for reducing the size of each connecting post 200, which facilitates processing and assembly.
[0052] Specifically, the connecting column 200 is vertically extended through its upper end to form a smoke vent 210. This allows the gas to be discharged upwards towards the energy storage module, further reducing the harmful effects of the gas on the module. Simultaneously, the end of the connecting column 200 furthest from the end plate 112 also has a connection hole for connecting the energy storage module to the energy storage container.
[0053] Preferably, the base plate 130 is configured as a liquid-cooled plate, and the exhaust pipe 120 and the two battery cells 110 are all mounted on the liquid-cooled plate. The liquid-cooled plate serves two purposes: firstly, it supports the battery cells 110 and the exhaust pipe 120; secondly, it cools the battery cells 110 and the exhaust pipe 120, reducing the risk of thermal failure of the energy storage module. It is worth noting that the liquid-cooled plate is thermally connected to the battery pack 100 on both sides along the vertical direction, resulting in higher utilization of the liquid-cooled plate.
[0054] This embodiment also discloses an energy storage system, including an energy storage container and energy storage modules as described in any of the above embodiments, with the energy storage modules housed within the energy storage container. The energy storage container serves as a support structure for the energy storage modules, and multiple energy storage modules are housed within it. In the energy storage system equipped with the aforementioned energy storage modules, when a single battery cell 111 experiences thermal failure, the gas can be directionally discharged along the explosion-proof valve, the first exhaust chamber, the second exhaust chamber, the third exhaust chamber, and the exhaust port 210, effectively reducing secondary hazards and improving safety performance.
[0055] Specifically, to achieve the connection between the connecting column 200 and the energy storage container, a mounting hole 220 is provided on the side of the connecting column 200 away from the battery unit 110. Furthermore, multiple mounting holes 220 are provided in the vertical direction to improve the connection strength between the connecting column 200 and the energy storage container.
[0056] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of this utility model. The content of this specification should not be construed as a limitation of this utility model.
Claims
1. An energy storage module, characterized in that, include: Two or more battery packs (100) along a vertical direction, the battery pack (100) including a base plate (130) perpendicular to the vertical direction and battery cells (110) disposed on the base plate (130), the battery cells (110) including a plurality of battery cells (111) disposed along a first horizontal direction, and end plates (112) disposed at both ends of the plurality of battery cells (111) along the first horizontal direction; An exhaust pipe (120) is disposed at one end of the battery unit (110) along a second horizontal direction. A first exhaust chamber is disposed inside the exhaust pipe (120), and the first exhaust chamber is connected to the explosion-proof valves of a plurality of battery cells (111). A second exhaust chamber is disposed inside the end plate (112), which is connected to the first exhaust chamber. The second horizontal direction is perpendicular to the first horizontal direction. A connecting post (200) is disposed on at least one side of the battery pack (100) along the first horizontal direction and connected to at least two end plates (112). The connecting post (200) is provided with a third exhaust chamber communicating with the second exhaust chamber and an exhaust hole (210) communicating with the third exhaust chamber.
2. The energy storage module of claim 1, wherein, The battery pack (100) is provided with two battery cells (110), which are spaced apart on the base plate (130) along the second horizontal direction. The exhaust pipe (120) is located between the two battery cells (110) and is connected to the explosion-proof valves of the individual battery cells (111) of the two battery cells (110).
3. The energy storage module of claim 2, wherein, A smoke baffle (121) is provided inside the exhaust pipe (120) to divide the exhaust pipe (120) into two smoke exhaust sub-cavities, and one smoke exhaust sub-cavity corresponds to one battery unit (110).
4. The energy storage module of claim 3, wherein, The two battery cells (110) have the same number of battery cells (111) and the two exhaust sub-cavities have the same volume.
5. The energy storage module of claim 1, wherein, The volume of the first smoke exhaust chamber is A1 mm 3 The number of the battery monomers (111) in communication with the first smoke exhaust chamber is B, and 500≤A1 / B≤5000.
6. The energy storage module of claim 5, wherein, The volume of the first smoke exhaust chamber is A1mm. 3 10 4 mm 3 ≤A1mm 3 ≤2*10 5 mm 3 ; and / or, the number of battery cells (111) connected to the first exhaust chamber is B, where 6 ≤ B ≤ 200.
7. The energy storage module of claim 1, wherein, The first smoke exhaust chamber and the second smoke exhaust chamber are connected by a first connecting hole, the area of which is S1mm. 2 1000mm 2 ≤S1mm 2 ≤6000mm 2 ; and / or, the second smoke exhaust chamber and the third smoke exhaust chamber are connected by a second connecting hole, the area of which is S2mm. 2 1000mm 2 ≤S2mm 2 ≤6000mm 2 .
8. The energy storage module of claim 1, wherein, The second smoke exhaust chamber is provided with a reinforcing rib (1121), which extends along the second horizontal direction.
9. The energy storage module of claim 1, wherein, The thickness of the battery cell (111) along the first horizontal direction is W1mm, and the thickness of the end plate (112) along the first horizontal direction is W2mm, 0.1≤W2 / W1≤1.
10. The energy storage module of claim 9, wherein, The thickness of the battery cell (111) along the first horizontal direction is W1mm, 20mm≤W1mm≤200mm; and / or, the thickness of the end plate (112) along the first horizontal direction is W2mm, 10mm≤W2mm≤50mm.
11. The energy storage module of claim 1, wherein, The thickness of the battery cell (111) along the first horizontal direction is W1mm, and the thickness of the connecting post (200) along the first horizontal direction is W3mm, 0.1≤W3 / W1≤1.
12. The energy storage module of claim 11, wherein, The thickness of the battery cell (111) along the first horizontal direction is W1mm, 20mm≤W1mm≤200mm; and / or, the thickness of the connecting post (200) along the first horizontal direction is W3mm, 10mm≤W3mm≤50mm.
13. The energy storage module of claim 1, wherein, The length of the end plate (112) along the second horizontal direction is L1mm, and the width of the connecting post (200) along the second horizontal direction is L2mm, 0.05≤L2 / L1≤1.
14. The energy storage module of claim 13, wherein, The length of the end plate (112) along the second horizontal direction is L1mm, 200mm≤L1mm≤1000mm; and / or, the width of the connecting post (200) along the second horizontal direction is L2mm, 20mm≤L2mm≤100mm.
15. The energy storage module of claim 1, wherein, The battery cell (110) has at least two of the connecting posts (200) on one side along the second horizontal direction.
16. The energy storage module of claim 1, wherein, The connecting column (200) is provided through the upper end in the vertical direction to form the smoke exhaust hole (210).
17. The energy storage module of claim 1, wherein, The exhaust pipe (120) is equipped with a safety valve, which can be opened at a preset pressure.
18. The energy storage module of claim 1, wherein, The base plate (130) is configured as a liquid cooling plate.
19. An energy storage system, characterized by, It includes an energy storage container and an energy storage module as described in any one of claims 1-18, wherein the energy storage module is disposed inside the energy storage container.