Heat dissipation device and applicable energy storage device thereof
By designing a heat dissipation device for air duct outlets, ventilation ports and deflectors in the energy storage device, the problems of large power consumption and difficulty in uniform heat dissipation of energy storage devices in the prior art are solved, and the effects of uniform heat dissipation and power consumption reduction are achieved.
Patent Information
- Application Number
- CN202421316802.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-07
AI Technical Summary
The thermal management methods of existing energy storage devices, such as liquid cooling and air cooling, have high power consumption and are difficult to achieve uniform heat dissipation.
A heat dissipation device is designed, including air duct air outlet plate, ventilation port and deflector plate. Through the design of the pores and deflector plates on the air duct air outlet plate, the air volume inside the energy storage device is reasonably distributed to ensure that each row and each layer of battery module dissipates heat evenly.
It realizes uniform heat dissipation inside the energy storage device, reduces the power consumption of the entire machine, and improves the heat dissipation efficiency.
Smart Images
Figure CN222801888U_ABST
Abstract
Description
Technical Field
[0001] The present application mainly relates to the field of electrochemical energy storage technology, and in particular to a heat dissipation device and an energy storage device applicable thereto. Background Art
[0002] At present, the thermal management of energy storage devices usually adopts liquid cooling and air cooling. The liquid cooling thermal management method requires a liquid cooling unit and a cold storage module connected to the liquid cooling unit. The liquid cooling unit includes equipment such as a chiller, pipelines, and cold plates. Therefore, too many complete equipment will cause the problem of excessive power consumption. The air cooling method generally adopts the air conditioning heat dissipation method, which requires auxiliary components such as air conditioners and air ducts in the refrigeration system, and the power consumption is also large. Regardless of whether liquid cooling or air cooling is used for thermal management, temperature uniformity treatment is required to ensure that the battery modules inside the battery energy storage device can be evenly cooled. However, it is difficult to design temperature uniformity for liquid cooling and air cooling thermal management solutions in the current field.
[0003] Therefore, there is an urgent need in the art for a heat dissipation device that has low power consumption and can evenly dissipate heat from an energy storage device. Utility Model Content
[0004] The technical problem to be solved by the present application is to provide a heat dissipation device and an energy storage device applicable thereto, which can uniformly dissipate the heat of the energy storage device.
[0005] To solve the above technical problems, the present application provides a heat dissipation device, which is located in an energy storage device, wherein the energy storage device includes one or more columns of battery modules arranged along a first direction, and the one or more columns of battery modules form one or more layers of battery modules along a second direction perpendicular to the first direction, and is characterized in that the heat dissipation device includes: an air duct outlet plate, the air duct outlet plate has one or more ventilation holes arranged at intervals along the second direction, and each of the ventilation holes is composed of a plurality of pores; and one or more first guide plates, suitable for being connected to a first side surface of the air duct outlet plate away from the battery module, the first guide plate being placed along the first direction in a first air flow direction perpendicular to the air duct outlet plate, the first guide plate dividing the first side surface of the air duct outlet plate into two or more air outlet plate sub-areas, and the first guide plate being used to distribute the gas flow to each of the air outlet plate sub-areas.
[0006] Optionally, the heat dissipation device also includes at least two second guide plates, located on both sides of each of the first guide plates, and the second guide plates are used to limit the gas flow to the local space of each of the wind plate sub-areas in a second air flow direction parallel to the air duct outlet plate.
[0007] Optionally, each of the second air guide plates includes a baffle and a bent plate connected to one side of the baffle, and a first end surface of the bent plate away from the baffle is located between any two adjacent vents.
[0008] Optionally, the shapes of the plurality of pores include polygonal holes, circular holes and / or waist holes.
[0009] Optionally, the polygonal hole includes a regular hexagonal hole, and the side length of the regular hexagonal hole ranges from 5 mm to 7 mm.
[0010] Optionally, the heat dissipation device further includes one or more third guide plates, which are located between every two adjacent columns of battery modules in the energy storage device.
[0011] Optionally, the heat dissipation device further includes an air outlet and one or more exhaust fans, wherein the exhaust fans are connected to the air outlet, and the exhaust fans are used to extract the gas in the energy storage device, and the exhaust fans include axial flow fans, centrifugal fans and / or cross flow fans.
[0012] Optionally, when there are multiple ventilation openings, the number of the multiple pores included in the multiple ventilation openings increases sequentially from close to the exhaust fan to far away from the exhaust fan in the second direction.
[0013] Optionally, the heat dissipation device further includes an air inlet and one or more blowers, wherein the blowers are connected to the air inlet and are used to provide gas for heat dissipation to the energy storage device, and the blowers include axial flow fans, centrifugal fans and / or cross flow fans.
[0014] To solve the above technical problems, the present application provides an energy storage device, comprising: the heat dissipation device as described above; and one or more columns of battery modules arranged along a first direction, the one or more columns of battery modules and one or more layers of battery modules formed along a second direction perpendicular to the first direction.
[0015] Compared with the prior art, the present application can reasonably distribute the air volume inside the energy storage device through the setting of the pores on the air duct outlet plate, and carry out targeted heat dissipation according to the different temperature conditions inside the energy storage device. Furthermore, through the design of the first guide plate, the gas flow flowing to each column of battery modules inside the energy storage device can be distributed, so that each column of battery modules can be evenly cooled. Through the design of the second guide plate, the gas flow flowing to the battery modules of different layers inside the energy storage device can be distributed, so that the battery modules of different layers can also be evenly cooled. Through the design of the pores on the air duct outlet plate, the first guide plate and the second guide plate, the technical effect of uniform heat dissipation inside the energy storage device can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings are included to provide a further understanding of the present application. They are included and constitute a part of the present application. The accompanying drawings illustrate embodiments of the present application and together with the present specification serve to explain the principles of the present application. In the accompanying drawings:
[0017] Figure 1 It is a schematic diagram of the overall structure of a heat dissipation device in one embodiment of the present application;
[0018] Figure 2 It is a structural schematic diagram of an air outlet plate of an air duct in a heat dissipation device in one embodiment of the present application;
[0019] Figure 3 It is a partial structural exploded diagram of an energy storage device suitable for a heat dissipation device in one embodiment of the present application.
[0020] Reference numerals
[0021] Heat dissipation device 10
[0022] Air duct outlet plate 101
[0023] Ventilation 102
[0024] Vent 1021
[0025] Vent 1022
[0026] Vent 1023
[0027] Vent 1024
[0028] Vent 1025
[0029] Pore 103
[0030] The first guide plate 104
[0031] First side S1
[0032] Air outlet area 105
[0033] First direction Y
[0034] Second direction X
[0035] First air flow direction X1
[0036] Second air flow direction Y1
[0037] Second guide plate 106
[0038] Baffle 107
[0039] Bending plate 108 DETAILED DESCRIPTION
[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.
[0041] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "an" and / or "the" do not refer to the singular and may also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of the steps and elements that have been clearly identified, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements.
[0042] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.
[0043] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.
[0044] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0045] In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above words have no special meaning and cannot be understood as limiting the scope of protection of this application. In addition, although the terms used in this application are selected from well-known and commonly used terms, some terms mentioned in the specification of this application may be selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant parts of the description of this article. In addition, it is required to understand this application not only by the actual terms used, but also by the meaning implied by each term.
[0046] This application refers to Figure 1-2 A heat dissipation device 10 is proposed, wherein: Figure 1 shows a schematic diagram of the overall structure of the heat dissipation device 10, Figure 2 The schematic diagram of the structure of the air outlet plate of the heat dissipation device 10 is shown along the z direction. The heat dissipation device 10 is located in the energy storage device, and the interior of the energy storage device includes multiple rows of battery modules arranged along a first direction Y. The multiple rows of battery modules form a multi-layer battery module along a second direction X perpendicular to the first direction Y. Figure 1 , the first direction Y can be understood as a direction parallel to the height direction of the heat dissipation device 10, and the second direction X can be understood as a width direction of the heat dissipation device 10; when looking at the heat dissipation device 10 along the z direction, if the heat dissipation device 10 is placed vertically, the first direction Y can also be understood as a vertical direction (gravity direction), and the second direction X can be correspondingly understood as a horizontal direction.
[0047] Exemplarily, the battery module uses a high temperature resistant battery (the optimal operating temperature is between 25-45°, and it can work at a higher temperature). The high temperature resistant battery can work at a higher temperature. The use of high temperature resistant batteries can enable the energy storage device 10 to maintain a small temperature difference inside the cabinet during the charging and discharging process, saving the power consumption of the whole machine. In this embodiment, in order to adapt to the internal structure of the heat dissipation device 10 shown, the interior of the battery energy storage device includes two columns of battery modules, and each column of battery modules is provided with 5 battery modules (corresponding to the number of vents 102). In other embodiments of the present application, the battery energy storage device 100 may have one or more columns of battery modules, and each column of battery modules may have multiple battery modules. The present application is not limited to this.
[0048] In this embodiment, for example, an air inlet (not shown) can be set at any position of the energy storage device. After the energy storage device starts to dissipate heat, an external air flow source will provide heat dissipation gas for the energy storage device. The heat dissipation device 10 includes an air duct outlet plate 101, and the air duct outlet plate 101 has a plurality of vents 102 arranged at intervals in a first direction Y. In other embodiments of the present application, the air duct outlet plate 101 can be provided with only one vent 102 according to actual operation requirements, and the present application is not limited to this. For further reference Figure 2 Each vent 102 is composed of a plurality of pores 103, so the edge of the vent 102 is formed by the plurality of pores 103. Figure 1 The edges of the vent 102 are shown to have an uneven topography.
[0049] Furthermore, the heat dissipation device 10 also includes a first guide plate 104, which is suitable for being connected to the first side S1 of the air duct outlet plate 101 away from the battery module. The first guide plate 104 is placed along the first direction Y on the first airflow direction X1 perpendicular to the air duct outlet plate 101. The first guide plate 104 divides the first side S1 of the air duct outlet plate 101 into two air outlet plate sub-areas S11 and S12. The first guide plate 104 is used to distribute the gas flow along the first airflow direction X1 to the air outlet plate sub-areas S11 and S12. Since there are multiple vents 102 on the air outlet plate sub-areas S11 and S12, the first guide plate 104 can be set to allow the heat dissipation gas to enter the energy storage device through the air outlet plate sub-areas S11 and S12 under the premise of uniform distribution, thereby achieving the purpose of uniform heat dissipation. In other embodiments of the present application, the air duct outlet plate 101 may be provided with one or more vents 102 according to actual conditions, and the heat dissipation device 10 may further include a plurality of first guide plates 104, which is not limited in the present application.
[0050] Further preferably, the heat dissipation device 10 also includes two second guide plates 106, which are located on both sides of each first guide plate 104. The second guide plates 106 are used to limit the local space flowing to each air outlet plate sub-area S11 and S12 in a second air flow direction X2 parallel to the air duct outlet plate 101. In the present embodiment, the local space includes the gas flow of the lower local space S3 and the upper local space S4.
[0051] In this embodiment, each second guide plate 106 includes a baffle 107 and a bent plate 108 connected to one side of the baffle 107, and the bent plate 108 is away from the first end surface S2 of the baffle 107 and is located between any two adjacent vents 102. Through the arrangement of the second guide plate 106, the heat dissipation gas can be divided into two parts, one part is located in the cavity A1 formed between the bent plate 108 and the inner wall of the lower local space S3, and the part of the gas first enters the cavity A1 along the second airflow direction X2. Due to the blocking effect of the bent plate 108, the part of the airflow will be collected in A1, and pass through one or more vents 102 on the local space S3, and enter the energy storage device 100 along the first airflow direction X1. On this basis, the other part of the gas blocked by the second guide plate 106 flows to the space outside the cavity A1. Due to the guiding effect of the bent plate 108, the part of the gas can, for example, enter the energy storage device 100 through the vent 102 of the upper local space S4. By disposing the second guide plate 106 , the gas entering the energy storage device 10 can be redistributed along the first direction Y, thereby achieving a better heat dissipation effect.
[0052] This embodiment is preferred, refer to Figure 2 The air duct outlet plate 101 includes five vents 102 in a first direction Y from the top of the energy storage device 100 to the bottom of the energy storage device. The five vents 102 include vents 1021, vents 1022, vents 1023, vents 1024 and vents 1025 along the first direction Y from the top of the energy storage device to the bottom. Since the flow resistance through different vents 102 is the same, in this embodiment, different numbers of pores 103 are set on the vents 102 in the first direction Y from the top of the energy storage device to the bottom, so as to reduce the temperature difference of the battery cells in the energy storage device during the heat dissipation process and achieve the effect of uniform heat dissipation.
[0053] In other embodiments of the present application, the number of the vents 102 may be one or more, and when the number of the vents 102 is multiple, the number of the multiple pores 103 included in the multiple vents 102 in the second direction X from the top of the energy storage device to the bottom of the energy storage device gradually increases.
[0054] On the other hand, the heat dissipation device 10 also includes a third guide plate (not shown), which is located between each two adjacent columns of battery modules in the energy storage device. In other embodiments of the present application, multiple third guide plates can be provided according to the number of columns of battery modules inside the energy storage device, and the present application is not limited thereto. By providing the third guide plate, the airflow entering the energy storage device 10 can be limited to a corresponding column of battery modules, thereby improving the uniformity of the air volume.
[0055] In this embodiment, the heat dissipation device 10 also includes two exhaust fans and an air outlet. The exhaust fans can be located at any position of the energy storage device 10 and connected to the air outlet. The fans are used to extract the gas in the energy storage device 10. Exemplarily, the exhaust fans include axial flow fans, centrifugal fans and / or cross flow fans. It should be noted that the "and / or" relationship between two or more features in the text of this application means any one of the two or more features, or a combination of any two or more of them. For example, the exhaust fans include axial flow fans, centrifugal fans and / or cross flow fans, which means that the collection unit 101 can be one or more of axial flow fans, centrifugal fans or cross flow fans. The "and / or" relationship between two or more features appearing below is interpreted in the same way.
[0056] In this embodiment, the flow resistance through different vents 102 is the same, and the airflow through the vents 102 closer to the top will be given priority. Since the exhaust fan is set at the top, the suction force is greater at the position close to the exhaust fan, while the suction force is relatively smaller at the position far from the exhaust fan. Therefore, in order to ensure the uniform temperature inside the battery system, fewer pores 103 need to be set near the exhaust fan to ensure uniform air volume. Exemplarily, the pore number ratio of vents 1021, vents 1022, vents 1023, and vents 1024 can be 28:35:44:54:65.
[0057] On the other hand, refer to Figure 3 , Figure 3 The exploded view of the local structure of the energy storage device 100 is shown. The energy storage device 100 includes a cabinet door 11, and the heat dissipation device 10 is fixedly connected to the cabinet door 11. In order to install the heat dissipation device 10 on the cabinet door 11, a first side plate 201, a second side plate 202 opposite to the first side plate 201, and a first upper plate 203 ( Figure 1 As also shown in the figure, the first side panel 201, the second side panel 202 and the first upper panel 203 are connected to the air duct outlet plate 101, and the first side panel 201, the second side panel 202 and the first upper panel 203 are connected to the cabinet door 11 on the side away from the air duct outlet plate 101, and a cavity A2 is formed between the cabinet door 11 and the air duct outlet plate 101 by the constraints of the first side panel 201, the second side panel 202 and the first upper panel 203, which is used to accommodate structures such as the first guide plate 104 and the second guide plate 106.
[0058] In other embodiments of the present application, the heat dissipation device 10 may include one or more blowers (not shown), which can be connected to the air inlet as an external air flow source to provide gas for heat dissipation for the energy storage device. In such an embodiment, the air volume is larger at a position close to the blower, while the air volume is smaller at a position relatively far from the blower. Therefore, in order to ensure uniform temperature inside the battery system, fewer pores are required near the blower and more pores are required far from the blower to ensure uniform air volume. The present application uses air cooling to cool the energy storage device, saving power consumption of the entire machine, thereby reducing the heat dissipation cost of the energy storage device. By setting the pores on the air outlet plate of the air duct, the air volume inside the energy storage device can be reasonably distributed, and targeted heat dissipation can be performed for different temperature conditions inside the energy storage device. Further, the design of the first guide plate can distribute the gas flow to each column of battery modules inside the energy storage device, so that each column of battery modules can be evenly dissipated. By designing the second guide plate, the gas flow to the battery modules of different layers inside the energy storage device can be distributed, so that the battery modules of different layers can also be evenly dissipated. Through the design of the air duct outlet plate pores, the first guide plate and the second guide plate, the technical effect of uniformly dissipating heat inside the energy storage device can be achieved.
[0059] The basic concepts have been described above. Obviously, for those skilled in the art, the above application disclosure is only an example and does not constitute a limitation of the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements and amendments to the present application. Such modifications, improvements and amendments are suggested in the present application, so such modifications, improvements and amendments still belong to the spirit and scope of the exemplary embodiments of the present application.
[0060] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be appropriately combined.
[0061] Similarly, it should be noted that in order to simplify the description of the disclosure of this application and thus help understand one or more application embodiments, in the above description of the embodiments of this application, multiple features are sometimes merged into one embodiment, figure or description thereof. However, this disclosure method does not mean that the features required by the object of this application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiment disclosed above.
[0062] In some embodiments, numbers describing the number of components and attributes are used. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise specified, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the specification and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the setting of such numerical values is as accurate as possible within the feasible range.
[0063] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions may be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the essential spirit of the present application, they will fall within the scope of the claims of the present application.
Claims
1. A heat dissipation device, located in an energy storage device, wherein the energy storage device comprises one or more rows of battery modules arranged along a first direction, wherein the one or more rows of battery modules form one or more layers of battery modules along a second direction perpendicular to the first direction, wherein: The heat dissipation device comprises: an air duct outlet plate, wherein the air duct outlet plate has one or more vents arranged at intervals along the second direction, and each of the vents is composed of a plurality of pores; and One or more first guide plates are suitable for connecting to the first side of the air duct outlet plate away from the battery module, the first guide plate is placed along the first direction perpendicular to the first air flow direction of the air duct outlet plate, the first guide plate divides the first side of the air duct outlet plate into two or more air outlet plate sub-areas, and the first guide plate is used to distribute the gas flow to each of the air outlet plate sub-areas.
2. The heat dissipation device according to claim 1, characterized in that: It also includes at least two second guide plates, which are located on both sides of each of the first guide plates, and the second guide plates are used to limit the gas flow to the local space of each of the wind plate sub-areas in a second air flow direction parallel to the air duct outlet plate.
3. The heat dissipation device according to claim 2, characterized in that: Each of the second air guide plates includes a baffle and a bent plate connected to one side of the baffle, and a first end surface of the bent plate away from the baffle is located between any two adjacent vents.
4. The heat dissipation device according to claim 1, characterized in that: The shapes of the plurality of pores include polygonal pores, circular pores and / or waist pores.
5. The heat dissipation device according to claim 4, characterized in that: The polygonal hole includes a regular hexagonal hole, and the side length of the regular hexagonal hole ranges from 5 mm to 7 mm.
6. The heat dissipation device according to claim 1, characterized in that: It also includes one or more third guide plates, which are located between every two adjacent columns of battery modules in the energy storage device.
7. The heat dissipation device according to claim 1, characterized in that: It also includes an air outlet and one or more exhaust fans, wherein the exhaust fans are connected to the air outlet and are used to extract the gas in the energy storage device. The exhaust fans include axial flow fans, centrifugal fans and / or cross flow fans.
8. The heat dissipation device according to claim 7, characterized in that: When there are multiple vents, the number of the multiple pores included in the multiple vents increases sequentially from close to the exhaust fan to far away from the exhaust fan in the second direction.
9. The heat dissipation device according to claim 1, characterized in that: It also includes an air inlet and one or more blowers, wherein the blowers are connected to the air inlet and are used to provide gas for heat dissipation to the energy storage device. The blowers include axial flow fans, centrifugal fans and / or cross flow fans.
10. An energy storage device, characterized in that: include: The heat dissipation device according to any one of claims 1 to 9; as well as One or more rows of battery modules are arranged along a first direction, and the one or more rows of battery modules and a second direction perpendicular to the first direction form one or more layers of battery modules.