Battery panel frame and battery
By using a Tesla valve structure designed in the panel frame, the problems of reduced flow rate and polarization of active substances are solved, and the charging and discharge rate of the battery and the uniform distribution of active substances are improved.
Patent Information
- Application Number
- CN202410122892.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2025-08-01
AI Technical Summary
The existing panel frame flow channel design leads to a decrease in the flow rate of active substances, affecting the charge and discharge rate, and leading to the polarization of the concentration of active substances at different locations in the battery.
The inlet and outlet flow channels designed with Tesla valve structure accelerate the flow of active substances through physical structure, reduce pressure drop loss, and ensure that the active substances are evenly distributed in the battery.
The charging and discharging rate of the battery is improved, and the concentration polarization problem of active substances at different locations in the battery is solved, thereby achieving uniform distribution of active substances in the electrode.
Smart Images
Figure CN120413697A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of batteries, and more particularly, to a battery frame and a battery. Background Art
[0002] The frame is one of the important components of a battery. The flow channels on the frame play a role in transporting the active material, and at the same time, the design of the flow channels affects the distribution and flow velocity of the active material in different regions inside the battery cell.
[0003] Currently, the flow channels of the frame generally adopt a tree structure, aiming to achieve an even split of the active material. However, there is still a large gap between the actual situation and the expectation. The flow velocity of the active material will decrease due to the split, thus affecting the charging and discharging rate of the battery. Summary of the Invention
[0004] The purpose of the present disclosure is to provide a battery frame and a battery to solve the technical problems existing in the related art.
[0005] To achieve the above purpose, a first aspect of the present disclosure provides a battery frame, including a body, on which a liquid inlet, a liquid outlet, a liquid inlet flow channel, and a liquid outlet flow channel are formed. The liquid inlet is communicated with the liquid inlet flow channel, and the liquid outlet is communicated with the liquid outlet flow channel. The end of the liquid inlet flow channel away from the liquid inlet is used to be communicated with the inlet of the flow channel on the bipolar plate, and the end of the liquid outlet flow channel away from the liquid outlet is used to be communicated with the outlet of the flow channel on the bipolar plate.
[0006] At least a part of the liquid inlet flow channel and / or the liquid outlet flow channel is formed into a Tesla valve structure to accelerate the flow velocity of the active material in the liquid inlet flow channel and / or the liquid outlet flow channel.
[0007] Optionally, the liquid inlet flow channel includes a first main flow channel and a plurality of first branch flow channels. The first end of the first main flow channel is connected to the liquid inlet, the second end of the first main flow channel is communicated with the first ends of the plurality of first branch flow channels, and the second end of each first branch flow channel is correspondingly communicated with the flow channel formed on the bipolar plate. At least a part of the first main flow channel is formed into a Tesla valve structure.
[0008] And / or, the liquid outlet flow channel includes a second main flow channel and a plurality of second branch flow channels. The first end of the second main flow channel is connected to the liquid outlet, the second end of the second main flow channel is communicated with the plurality of second branch flow channels, and the second end of each second branch flow channel is correspondingly communicated with the flow channel formed on the bipolar plate. At least a part of the second main flow channel is formed into a Tesla valve structure.
[0009] Optionally, at least a part of each of the first branch flow channel and the second branch flow channel is formed into a Tesla valve structure.
[0010] Optionally, the spacing between every two adjacent ones of the plurality of first branch channels is equal;
[0011] The spacing between every two adjacent ones of the plurality of second branch channels is equal.
[0012] Optionally, both the liquid inlet channel formed as a Tesla valve structure and the liquid outlet channel formed as a Tesla valve structure have a forward flow direction and a reverse flow direction. The direction in which the active material enters the liquid inlet channel from the liquid inlet is the forward flow direction, and the direction in which the active material flows from the liquid outlet channel to the liquid outlet is the forward flow direction.
[0013] Optionally, the liquid inlet channel and the liquid outlet channel include a plurality of interconnected conduction units. Each conduction unit includes an arc-shaped groove and a straight groove. Both ends of the arc-shaped groove in its length direction are first open ends, and both ends of the straight groove in its length direction are formed as second open ends. One of the first open ends of the arc-shaped groove is connected to one of the second open ends of the straight groove, and the other first open end of the arc-shaped groove is connected to the other second open end of the straight groove.
[0014] Optionally, the width of the arc-shaped groove is 2 mm to 3 mm;
[0015] The width of the straight groove is 2 mm to 3 mm.
[0016] Optionally, an opening for embedding a bipolar plate is formed in the middle of the body. One end of the liquid inlet channel away from the liquid inlet forms a first open end on the side wall of the opening, and the first open end is used to communicate with the inlet of the channel on the bipolar plate. One end of the liquid outlet channel away from the liquid outlet forms a second open end on the side wall of the opening, and the second open end is used to communicate with the outlet of the channel on the bipolar plate.
[0017] Optionally, the battery plate frame further includes a seal. A seal groove is formed on the body. The seal groove is formed as a ring and is arranged around the circumference of the body. The liquid inlet, the liquid outlet, the liquid inlet channel, and the liquid outlet channel are all located within the area surrounded by the seal groove, and the seal is embedded in the seal groove.
[0018] The second aspect of the present disclosure provides a battery, including the battery plate frame as described above.
[0019] Through the above technical solution, during the charging or discharging process of the battery, the active material flows in the liquid inlet channel and the liquid outlet channel within the battery plate frame. Moreover, since at least part of the liquid inlet channel and / or the liquid outlet channel is formed as a Tesla valve structure, this Tesla valve structure can utilize the spatial structure to promote the flow of the active material, accelerate the active material through the physical structure, and reduce the energy loss of the active material during transportation. That is to say, during the process of the active material flowing in the liquid inlet channel and / or the liquid outlet channel, there is a smaller pressure drop loss. Therefore, the flow rate of the active material in the liquid inlet channel and / or the liquid outlet channel can be increased, thereby enhancing the charging and discharging rate of the battery.
[0020] Furthermore, after the active material is split by the liquid inlet channel, a certain pressure drop will occur. It is precisely because the liquid inlet channel and / or the liquid outlet channel provided by the present disclosure, which is at least partially formed as a Tesla valve structure, can enable the active material to have a smaller pressure drop and a faster flow rate during the flowing process. Therefore, during the processes of the active material entering the liquid inlet channel, flowing out of the liquid inlet channel, entering the liquid outlet channel, and flowing out of the liquid outlet channel, due to the smaller pressure drop, the flow rate and concentration of the active material at the above different positions can be kept as close as possible. That is, the problem of concentration polarization of the active material at different positions in the battery can be solved, enabling the active material to better and more fully penetrate the electrode and be evenly distributed within the electrode.
[0021] Other features and advantages of the present disclosure will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific implementation, they are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the drawings:
[0023] Figure 1 is a top view schematic diagram of a battery plate frame provided by an exemplary embodiment of the present disclosure;
[0024] Figure 2 is Figure 1 an enlarged schematic diagram of part A of
[0025] Figure 3 is Figure 1 an enlarged schematic diagram of part B of
[0026] Figure 4 is a top view schematic diagram of a battery plate frame provided by another exemplary embodiment of the present disclosure.
[0027] DESCRIPTION OF THE REFERENCE NUMERALS
[0028] 1 - Battery panel frame; 10 - Body; 11 - Liquid inlet; 12 - Liquid outlet; 13 - Liquid inlet flow channel; 131 - First main flow channel; 132 - First branch flow channel; 14 - Liquid outlet flow channel; 141 - Second main flow channel; 142 - Second branch flow channel; 20 - Conducting unit; 21 - Arc-shaped groove; 22 - Linear groove; 30 - Opening; 40 - Sealing groove. Detailed implementation manners
[0029] The following will describe in detail the specific implementation manners of the present disclosure with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for the purpose of illustration and explanation of the present disclosure, and are not used to limit the present disclosure.
[0030] In the present disclosure, unless otherwise stated, the orientation terms used are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation of the present disclosure. The terms "inside" and "outside" refer to the inside and outside of the corresponding structural contour.
[0031] In addition, it should be noted that the terms such as "first" and "second" are used to distinguish one element from another, and do not have an order and importance. In addition, in the description with reference to the accompanying drawings, the same reference numerals in different drawings represent the same elements.
[0032] In the description of the present disclosure, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "connected", "coupled", and "installed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.
[0033] Referring to Figures 1 to 4 As shown, a first aspect of the present disclosure provides a battery panel frame 1, including a body 10. A liquid inlet 11, a liquid outlet 12, a liquid inlet flow channel 13, and a liquid outlet flow channel 14 are formed on the body 10. The liquid inlet 11 is communicated with the liquid inlet flow channel 13, and the liquid outlet 12 is communicated with the liquid outlet flow channel 14. One end of the liquid inlet flow channel 13 away from the liquid inlet 11 is used to be communicated with the inlet of the flow channel on the bipolar plate, and one end of the liquid outlet flow channel 14 away from the liquid outlet 12 is used to be communicated with the outlet of the flow channel on the bipolar plate. At least part of the liquid inlet flow channel 13 and / or the liquid outlet flow channel 14 is formed into a Tesla valve structure to accelerate the flow rate of the active material in the liquid inlet flow channel 13 and / or the liquid outlet flow channel 14.
[0034] Through the above technical solution, during the charging or discharging process of the battery, the active material flows in the liquid inlet channel 13 and the liquid outlet channel 14 within the battery plate frame 1. Moreover, since at least part of the liquid inlet channel 13 and / or the liquid outlet channel 14 is formed as a Tesla valve structure, this Tesla valve structure can utilize the spatial structure to promote the flow of the active material, accelerate the active material through the physical structure, and reduce the energy loss of the active material during transportation. That is to say, during the process of the active material flowing in the liquid inlet channel 13 and / or the liquid outlet channel 14, there is a smaller pressure drop loss. Therefore, it can accelerate the flow rate of the active material in the liquid inlet channel 13 and / or the liquid outlet channel 14, thereby enhancing the charging and discharging rate of the battery.
[0035] Furthermore, after the active material is split by the liquid inlet channel 13, a certain pressure drop will occur. It is precisely because the liquid inlet channel 13 and / or the liquid outlet channel 14 provided by the present disclosure, which is at least partially formed as a Tesla valve structure, enables the active material to have a smaller pressure drop and a faster flow rate during the flowing process. Therefore, during the processes of the active material entering the liquid inlet channel 13, flowing out of the liquid inlet channel 13, entering the liquid outlet channel 14, and flowing out of the liquid outlet channel 14, due to the smaller pressure drop, the flow rate and concentration of the active material at the above different positions can be kept as close as possible. That is, it can solve the problem of concentration polarization of the active material at different positions in the battery, enabling the active material to better and more fully penetrate the electrode and be evenly distributed within the electrode.
[0036] Here, it should be noted that as Figures 1 to 4 mentioned above, the fact that at least part of the liquid inlet channel 13 and / or the liquid outlet channel 14 is formed as a Tesla valve structure can be understood as follows: both the liquid inlet channel 13 and the liquid outlet channel 14 are formed as Tesla valve structures. In this way, during the process of the active material flowing through the liquid inlet channel 13 and the liquid outlet channel 14, it can achieve the effects of reducing the pressure drop and increasing the flow rate. Or, either one of the liquid inlet channel 13 or the liquid outlet channel 14 is formed as a Tesla valve structure. In this way, the active material can achieve the effects of reducing the pressure drop and increasing the flow rate in one of the liquid inlet channel 13 or the liquid outlet channel 14.
[0037] Or, it can also be that a part of the liquid inlet channel 13 and / or the liquid outlet channel 14 is formed as a Tesla valve structure, or the entire liquid inlet channel 13 and / or the liquid outlet channel 14 is formed as a Tesla valve structure. The present disclosure does not limit this here.
[0038] Optionally, as Figures 1 to 4As shown, the liquid inlet channel 13 includes a first main channel 131 and a plurality of first branch channels 132. The first end of the first main channel 131 is connected to the liquid inlet 11, the second end of the first main channel 131 communicates with the first ends of the plurality of first branch channels 132, and the second end of each first branch channel 132 communicates with the channels formed on the bipolar plate in a one-to-one correspondence. The first main channel 131 is formed into a Tesla valve structure. In this way, after the active material enters the first main channel 131, it is diverted into the plurality of first branch channels 132, so as to disperse the active material into the channels on the bipolar plate. Since the first main channel 131 is formed into a Tesla valve structure, after the active material enters the first main channel 131, it has a small pressure drop, and the active material can also be accelerated when flowing in the first main channel 131. Thus, after the active material is diverted into the first branch channels 132, it can still have a large flow rate to improve the charge and discharge rate of the battery.
[0039] As Figures 1 to 4 As shown, the liquid outlet channel 14 includes a second main channel 141 and a plurality of second branch channels 142. The first end of the second main channel 141 is connected to the liquid outlet 12, the second end of the second main channel 141 communicates with the plurality of second branch channels 142, and the second end of each second branch channel 142 communicates with the channels formed on the bipolar plate in a one-to-one correspondence. The second main channel 141 is formed into a Tesla valve structure. The same is true for the second main channel 141. Specifically, after the active material enters the second main channel 141, it is diverted into the plurality of second branch channels 142, so as to disperse the active material into the channels on the bipolar plate. Since the second main channel 141 is formed into a Tesla valve structure, after the active material enters the second main channel 141, it has a small pressure drop, and the active material can also be accelerated when flowing in the second main channel 141. Thus, after the active material is diverted into the second branch channels 142, it can still have a large flow rate to improve the charge and discharge rate of the battery.
[0040] During the process that the active material is shunted from the first main flow channel 131 into the first branch flow channel 132 and from the second main flow channel 141 into the second branch flow channel 142, due to the shunting effect, there will be an increased pressure drop after the active material enters the first branch flow channel 132 and the second branch flow channel 142, which will affect the flow velocity of the active material in the first branch flow channel 132 and the second branch flow channel 142. Based on this, the first branch flow channel 132 and the second branch flow channel 142 can both be formed into Tesla valve structures. In this way, after the active material is shunted from the first main flow channel 131 into the first branch flow channel 132 and from the second main flow channel 141 into the second branch flow channel 142, the Tesla valve structure can use the spatial structure to promote the flow of the active material, accelerate the active material through the physical structure, and reduce the energy loss of the active material during transportation. That is to say, during the process that the active material flows in the liquid inlet flow channel 13 and / or the liquid outlet flow channel 14, there is a smaller pressure drop loss. Therefore, the flow velocity of the active material in the liquid inlet flow channel 13 and / or the liquid outlet flow channel 14 can be increased, thereby improving the charging and discharging rate of the battery.
[0041] To solve the problem of concentration polarization of the active material on the bipolar plate, in an exemplary embodiment provided by the present disclosure, optionally, as Figures 1 to 4 shown, the distance between every two adjacent first branch flow channels 132 among the multiple first branch flow channels 132 is equal; the distance between every two adjacent second branch flow channels 142 among the multiple second branch flow channels 142 is equal. In this way, when the active material is shunted from the first main flow channel 131 into the multiple first branch flow channels 132, since the distances between the multiple first branch flow channels 132 are equal, the distribution of the concentration of the active material flowing into the first branch flow channel 132 on the bipolar plate can be made more uniform, and the consistency of the active material in each part of the bipolar plate can be improved.
[0042] To further improve the uniform distribution of the active material on the bipolar plate, the width and depth of each first branch flow channel 132 among the multiple first branch flow channels 132 can also be the same. In this way, when the active material is shunted from the first main flow channel 131 into each first branch flow channel 132, the flow rate and flow velocity of the active material in each branch flow channel can be kept consistent, thereby solving the problem of concentration polarization of the active material at different positions in the electrode plate.
[0043] Optionally, as Figures 1 to 4As shown, the liquid inlet flow channel 13 formed as a Tesla valve structure and the liquid outlet flow channel 14 formed as a Tesla valve structure both have a forward flow direction and a reverse flow direction. The direction in which the active material enters the liquid inlet flow channel 13 from the liquid inlet 11 is the forward flow direction, and the direction in which the active material flows from the liquid outlet flow channel 14 to the liquid outlet 12 is the forward flow direction. It should be noted that when the active material flows in the forward flow direction of the Tesla valve, the electrolyte can be accelerated due to the flow pressure. When the active material flows in the reverse flow direction of the Tesla valve, the electrolyte (i.e., the active material) can be blocked due to the backflow and the head is increased, hindering the overall forward flow of the active material. That is, the active material can be accelerated when flowing in the forward flow direction of the Tesla valve, and the active material will decelerate or stop when flowing in the reverse flow direction of the Tesla valve. In this way, since the direction in which the active material enters the liquid inlet flow channel 13 from the liquid inlet 11 is the forward flow direction and the direction in which the active material flows from the liquid outlet flow channel 14 to the liquid outlet 12 is the forward flow direction, the speed of the active material entering the liquid inlet flow channel 13 and the speed of the active material flowing out of the liquid outlet flow channel 14 can be increased, and the flow rate of the active material can be further increased.
[0044] Optionally, as Figures 2 to 3 shown, the liquid inlet flow channel 13 and the liquid outlet flow channel 14 may include a plurality of interconnected conduction units 20. Each conduction unit 20 includes an arc-shaped groove 21 and a straight groove 22. Both ends of the arc-shaped groove 21 in its length direction are first open ends, and both ends of the straight groove 22 in its length direction are formed as second open ends. One first open end of the arc-shaped groove 21 is connected to one second open end of the straight groove 22, and the other first open end of the arc-shaped groove 21 is connected to the other second open end of the straight groove 22. In this way, during the flow of the active material in the liquid inlet flow channel 13 or the liquid outlet flow channel 14, the active material can bypass all the arc-shaped grooves 21 and then flow unobstructed from the inlet to the outlet, and is accelerated due to the flow pressure, thereby realizing the acceleration of the active material.
[0045] Theoretically, the more the number of arc-shaped grooves 21 and straight grooves 22 in the liquid inlet flow channel 13 and the liquid outlet flow channel 14 per unit length, the more obvious the acceleration effect on the active material. In this way, the number of arc-shaped grooves 21 and straight grooves 22 can be set according to the requirements of the charge and discharge rate of the battery.
[0046] During the processing of the above-mentioned battery, in order to reduce the number of liquid inlets 11, one liquid inlet 11 can be connected to multiple liquid inlet channels 13. Specifically, when the active material flowing into or out of the liquid inlet 11 flows into the three liquid inlet channels 13, the paths through which the active material flows are different (the flow path of the active material in the middle liquid inlet channel 13 is short, and the flow path in the liquid inlet channel 13 at the edge is long). In this way, it is bound to cause the flow rates of the active material flowing out of the liquid inlet 11 into the three liquid inlet channels 13 to be inconsistent, which will lead to inconsistent flow rates and concentrations of the active material in the channels entering the bipolar plate from different liquid inlet channels 13, resulting in uneven distribution of the active material in the bipolar plate and the problem of concentration polarization, which has an adverse impact on the performance of the battery.
[0047] Based on this, during the setting process of the above-mentioned liquid inlet channel 13, the flow rate of the active material flowing into the channels of the bipolar plate through the first branch channel 132 can be adjusted by changing the Tesla valve structure of the first main channel 131, such as Figures 1 to 3 shown, to achieve the adjustment of the flow rate of the active material. Specifically, for the liquid inlet channel 13 at the edge (where the flow path of the active material is longer), the number of conduction units 20 per unit length can be appropriately increased, and for the liquid inlet channel 13 in the middle (where the flow path of the active material is shorter), the number of conduction units 20 per unit length can be appropriately decreased, so that the active material has a faster flow rate in the liquid inlet channel 13 at the edge and a relatively slower flow rate in the liquid inlet channel 13 in the middle, so that the active material flowing out through the liquid inlet channel 13 at the edge can still maintain the same flow rate as the active material in the liquid inlet channel 13 in the middle under the condition of a relatively large pressure drop.
[0048] In an exemplary embodiment provided by the present disclosure, as Figures 1 to 4 shown, each liquid inlet 11 can be connected to three liquid inlet channels 13, that is, each liquid inlet 11 can be connected to three first main channels 131 and is used to supply active material to the three first main channels 131 simultaneously.
[0049] For the embodiment in which the liquid inlet channel 13 includes a first main channel 131 and multiple first branch channels 132, and the second end of the first main channel 131 is connected to the first ends of the multiple first branch channels 132, by adjusting the number of conduction units 20 of the Tesla valve structure of the first main channel 131 per unit length at the middle and the edge, the flow rate and flow volume of the active material flowing from different first main channels 131 into different first branch channels 132 can be made, and further, the active material flowing into the channels of the bipolar plate can be made more uniform, reducing or avoiding the problem of concentration polarization.
[0050] Optionally, the width of the arcuate groove 21 is 2 mm to 3 mm; the width of the linear groove 22 is 2 mm to 3 mm. On the one hand, the arcuate groove 21 and the linear groove 22 with the above dimensions can meet the requirements for the residence time, flow rate, and uniformity of the active substance in the liquid inlet channel 13 and the liquid outlet channel 14. On the other hand, it can reduce the processing difficulty and thus reduce the processing cost.
[0051] Optionally, an opening 30 is formed in the middle of the body 10 for inserting the bipolar plate. The end of the liquid inlet channel 13 away from the liquid inlet 11 has a first open end formed on the side wall of the opening 30. The first open end is used to communicate with the inlet of the channel on the bipolar plate. The end of the liquid outlet channel 14 away from the liquid outlet 12 has a second open end formed on the side wall of the opening 30. The second open end is used to communicate with the outlet of the channel on the bipolar plate. In this way, when the bipolar plate is inserted into the opening 30 in the middle of the body 10, the side wall of the bipolar plate abuts the side wall of the opening 30. The first open end of the liquid inlet channel 13 communicates with the inlet of the channel on the bipolar plate, and the second open end of the liquid outlet channel 14 can communicate with the outlet of the channel on the bipolar plate, so that the active material can flow between the body 10 and the bipolar plate.
[0052] Optionally, the battery plate frame 1 further includes a sealing member. A sealing groove 40 is formed on the body 10. The sealing groove 40 is annular and circumferentially surrounds the body 10. The liquid inlet 11, the liquid outlet 12, the liquid inlet flow channel 13, and the liquid outlet flow channel 14 are all located within the area enclosed by the sealing groove 40. The sealing member is embedded in the sealing groove 40. The sealing member can improve the overall sealing performance of the battery plate frame 1 to prevent leakage of the active material.
[0053] In an exemplary embodiment provided by the present disclosure, there may be two of the above-mentioned sealing grooves 40 and two of the sealing members, and the two sealing grooves 40 are spaced apart. In this way, the two sealing grooves 40 and the two sealing members can form two sealing structures, further improving the sealing performance of the battery plate frame 1.
[0054] The second aspect of the present disclosure provides a battery, comprising the above battery plate frame 1. The battery has all the beneficial effects of the above battery plate frame 1, which will not be described in detail in the present disclosure.
[0055] In the present disclosure, there is no limitation on the type of the battery, that is, the battery can be any battery containing active materials, such as a flow battery, a fuel cell, and the like.
[0056] In one embodiment of the present disclosure, the distance between two adjacent inlet channels 13 or two connected outlet channels 14 can be 1 mm to 2 mm. This distance not only meets the concentration and dispersion requirements of the active material on the bipolar plate, but also facilitates the processing and molding of the inlet and outlet channels 13 and 14, reducing processing costs.
[0057] In an embodiment provided by the present disclosure, the depths of the liquid inlet flow channel 13 and the liquid outlet flow channel 14 may be 1 mm to 2 mm.
[0058] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0059] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without conflict. To avoid unnecessary repetition, the present disclosure will not separately describe various possible combination manners.
[0060] Furthermore, any combination can be made among various different embodiments of the present disclosure as long as it does not violate the idea of the present disclosure, and it should also be regarded as the content disclosed by the present disclosure.
Claims
1. A battery panel frame, characterized in that, It includes a body, on which a liquid inlet, a liquid outlet, a liquid inlet flow channel and a liquid outlet flow channel are formed. The liquid inlet is communicated with the liquid inlet flow channel, and the liquid outlet is communicated with the liquid outlet flow channel; One end of the liquid inlet flow channel away from the liquid inlet is used to communicate with the inlet of the flow channel on the bipolar plate, and one end of the liquid outlet flow channel away from the liquid outlet is used to communicate with the outlet of the flow channel on the bipolar plate; At least part of the liquid inlet flow channel and / or the liquid outlet flow channel is formed into a Tesla valve structure to accelerate the flow rate of the active substance in the liquid inlet flow channel and / or the liquid outlet flow channel.
2. The battery panel frame according to claim 1, characterized in that, The liquid inlet flow channel includes a first main flow channel and a plurality of first branch flow channels. The first end of the first main flow channel is connected to the liquid inlet, the second end of the first main flow channel is communicated with the first ends of the plurality of first branch flow channels, and the second end of each first branch flow channel is communicated with the flow channel formed on the bipolar plate in a one-to-one correspondence. At least part of the first main flow channel is formed into a Tesla valve structure; And / or, the liquid outlet flow channel includes a second main flow channel and a plurality of second branch flow channels. The first end of the second main flow channel is connected to the liquid outlet, the second end of the second main flow channel is communicated with the plurality of second branch flow channels, and the second end of each second branch flow channel is communicated with the flow channel formed on the bipolar plate in a one-to-one correspondence. At least part of the second main flow channel is formed into a Tesla valve structure.
3. The battery panel frame according to claim 2, wherein, At least part of both the first branch flow channel and the second branch flow channel is formed into a Tesla valve structure.
4. The battery panel frame according to claim 2, characterized in that, The distance between every two adjacent first branch flow channels among the plurality of first branch flow channels is equal; The distance between every two adjacent second branch flow channels among the plurality of second branch flow channels is equal.
5. The battery panel frame according to claim 1, characterized in that, Both the liquid inlet flow channel formed into a Tesla valve structure and the liquid outlet flow channel formed into a Tesla valve structure have a forward flow direction and a reverse flow direction. The direction in which the active substance enters the liquid inlet flow channel from the liquid inlet is the forward flow direction, and the direction in which the active substance flows from the liquid outlet flow channel to the liquid outlet is the forward flow direction.
6. The battery panel frame according to claim 1, characterized in that, The liquid inlet flow channel and the liquid outlet flow channel include a plurality of interconnected conduction units. Each conduction unit includes an arc-shaped groove and a straight groove. Both ends of the arc-shaped groove in its length direction are first open ends, and both ends of the straight groove in its length direction are formed into second open ends. One first open end of the arc-shaped groove is communicated with one second open end of the straight groove, and the other first open end of the arc-shaped groove is communicated with the other second open end of the straight groove.
7. The battery panel frame according to claim 6, wherein The width of the arc-shaped groove is 2 mm to 3 mm; The width of the straight groove is 2 mm to 3 mm.
8. The battery panel frame according to any one of claims 1-7, characterized in that, An opening for embedding the bipolar plate is formed in the middle of the body. One end of the liquid inlet flow channel away from the liquid inlet forms a first open end on the side wall of the opening, and the first open end is used to communicate with the inlet of the flow channel on the bipolar plate. One end of the liquid outlet flow channel away from the liquid outlet forms a second open end on the side wall of the opening, and the second open end is used to communicate with the outlet of the flow channel on the bipolar plate.
9. The battery panel frame according to any one of claims 1-7, characterized in that, The battery panel frame further includes a seal. A seal groove is formed on the body. The seal groove is formed in an annular shape and is disposed around the circumference of the body. The liquid inlet, the liquid outlet, the liquid inlet flow channel, and the liquid outlet flow channel are all located within the area surrounded by the seal groove. The seal is embedded in the seal groove.
10. A battery, characterized in that, Comprising the battery panel frame according to any one of claims 1-9.