CN221039175U

CN221039175U - All-round temperature control's soft packet of battery anchor clamps

Info

Publication number: CN221039175U
Application number: CN202323115404.9U
Authority: CN
Inventors: 黄学龙; 周小静; 罗春平; 黄德盛; 谢伟
Original assignee: Farasis Energy Ganzhou Co Ltd
Current assignee: Farasis Energy Ganzhou Co Ltd
Priority date: 2023-11-17
Filing date: 2023-11-17
Publication date: 2024-05-28
Anticipated expiration: 2033-11-17

Abstract

The utility model belongs to the technical field of soft package lithium battery production, and discloses an all-dimensional temperature-control soft package battery clamp, which comprises: the upper clamping plate comprises a first upper bottom plate and a first lower bottom plate, the first upper bottom plate and the first lower bottom plate are connected through peripheral side walls, a first cavity is formed in the upper clamping plate, and the first lower bottom plate is sunken towards the first upper bottom plate to form a first accommodating groove; the lower clamping plate is provided with a second accommodating groove in a similar way, and the first accommodating groove and the second accommodating groove are used for cladding and clamping the soft-packaged battery; the outer surfaces of the peripheral side walls of the upper clamping plate and the lower clamping plate are respectively provided with a water inlet and a water outlet. The utility model can only control the temperature of the front side of the battery in the soft package battery testing process, solves the problem that the welding part and the side surface of the tab with serious heat cannot dissipate heat, can fully cover the battery, and realizes the transverse and longitudinal omnibearing heat dissipation of the battery.

Description

All-round temperature control's soft packet of battery anchor clamps

Technical Field

The utility model relates to the technical field of soft-package lithium battery production, in particular to an omnibearing temperature-control soft-package battery clamp.

Background

In the soft package battery test, the expansion and shrinkage of the pole piece are accompanied in the charge and discharge process, and in order to avoid the problems of structural damage, lithium separation, gas production and the like, a clamp is needed to be used for pressurizing in the test process. The main flow test method of the current soft package battery is to place the battery in an air cooling incubator after the battery is clamped, and the battery temperature and the incubator temperature are consistent after long-time standing to start the test. However, as the energy density requirement of the battery is higher and higher, the thickness of the battery is thicker and thicker, the heat dissipation and the heating performance of the battery are poorer, and the test standing time is continuously increased. Secondly, the most serious tab welding part that generates heat of the soft package battery can not effectively cool down because of being blocked by the clamp, so that the cooling time is increased, the testing time is prolonged, and the testing efficiency is reduced. The invention patent with publication number CN 217903232U discloses a soft package battery clamp with composite heat dissipation, which has complex structure, long time for installing the clamp, and can only control the temperature of the front surface of the battery, and the welding part and the side surface of the tab with serious heat cannot dissipate heat.

Therefore, how to quickly realize the omnibearing temperature control of the transverse and longitudinal directions of the battery in the testing process of the soft package battery is a problem to be solved.

Disclosure of utility model

The utility model mainly aims to provide a flexible package battery clamp capable of controlling the temperature in all directions, and aims to solve the technical problem of how to control the temperature of a battery in all directions in the testing process of the flexible package battery.

In order to achieve the above object, a first aspect of the present application provides a flexible battery holder with omni-directional temperature control, comprising: the upper clamping plate comprises a first upper bottom plate and a first lower bottom plate, the first upper bottom plate and the first lower bottom plate are connected through peripheral side walls, a first cavity is formed in the upper clamping plate, and the first lower bottom plate is sunken towards the first upper bottom plate to form a first accommodating groove;

the upper clamping plate comprises a second upper bottom plate and a second lower bottom plate, the second upper bottom plate and the second lower bottom plate are connected through peripheral side walls, a second cavity is formed in the lower clamping plate, and the second upper bottom plate is sunken towards the second lower bottom plate to form a second accommodating groove;

the first accommodating groove and the second accommodating groove are oppositely arranged and are used for cladding and clamping the soft-package battery; the outer surfaces of the peripheral side walls of the upper clamping plate and the lower clamping plate are respectively provided with a water inlet and a water outlet.

Further, a plurality of liquid baffle plates are arranged on the inner wall of the first lower bottom plate, and the liquid baffle plates divide the interior of the first chamber to form an S-shaped liquid guide flow passage.

Further, a plurality of liquid baffle plates are arranged on the inner wall of the second upper bottom plate, and the liquid baffle plates divide the interior of the second chamber to form an S-shaped liquid guide flow passage.

Further, the water inlet is located at the start end of the S-shaped liquid guiding flow channel, and the water outlet is located at the tail end of the S-shaped liquid guiding flow channel.

Further, the water outlet of the upper clamping plate is communicated with the water inlet of the lower clamping plate, and the water outlet is used for realizing water flow circulation.

Further, fixing edges are outwards extended from two opposite sides of the upper clamping plate and/or the lower clamping plate, and fastening devices are arranged on the fixing edges and used for realizing fastening connection between the upper clamping plate and the lower clamping plate.

Further, the fastening device comprises a bolt hole for being matched with the bolt to fix the upper clamping plate and the lower clamping plate.

Further, foam is arranged on the contact surface of the first accommodating groove and/or the second accommodating groove and the soft package battery.

Further, the upper clamping plate and/or the lower clamping plate are/is made of heat-conducting metal.

Further, the upper clamping plate and/or the lower clamping plate are/is provided with an insulating layer on the surface.

The beneficial effects are that:

The clamp disclosed by the utility model has the advantages that the clamp plate and the cooling pipe in the traditional sense are integrated and innovated in terms of structure and function, the runner is built in the clamp plate to form a cooling effect, the cooling pipe is not required to be arranged independently for cooling, the structure is simple, and the disassembly and the use are convenient. Meanwhile, due to the fusion design of the inner part of the side wall around the battery clamping plate accommodating groove and the space on the bottom plate, water can be cooled down except the front side of the battery when the clamp clamps the battery, and water can flow through the whole battery, including the lug and the side edge of the battery, the battery is fully coated, and the transverse and longitudinal all-dimensional heat dissipation of the battery is realized.

Drawings

FIG. 1 is an exploded view of one embodiment of an all-around temperature controlled flexible package battery clamp of the present utility model;

FIG. 2 is a schematic diagram of a flexible battery holder with temperature control in all directions according to an embodiment of the present utility model;

Fig. 3 is a schematic view of an upper clamping plate of an embodiment of the omnibearing temperature-controlled soft package battery clamp of the present utility model.

Fig. 4 is a schematic view showing an internal structure of an upper clamping plate of an embodiment of the omnibearing temperature-controlled soft package battery clamp of the present utility model.

Fig. 5 is a schematic view showing an internal structure of an upper clamping plate of an embodiment of the omnibearing temperature-controlled soft package battery clamp of the present utility model.

Fig. 6 is a schematic bottom view of an upper clamping plate of an embodiment of the omnibearing temperature-controlled soft package battery clamp of the present utility model.

Wherein:

1. A first accommodation groove; 2. a second accommodation groove; 101. a bolt; 102. a nut; 103. bolt holes; 104. an upper clamping plate; 105. a lower clamping plate; 108. a water outlet; 109. a water inlet; 110. a connecting pipe; 111. the front surface of the battery; 113. a tab welding part; 22. fixing the edges; 25. a battery tab; 43. s-shaped liquid guide flow channel; 44. a water passing groove; 45. a liquid baffle; 46. the flow direction of the liquid;

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless specifically defined otherwise.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; the connection may be mechanical connection, direct connection or indirect connection through an intermediate medium, and may be internal connection of two elements or interaction relationship of two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Referring to fig. 1 to 6, the present utility model provides a flexible battery clamp with omnibearing temperature control, comprising: the upper clamping plate 104 comprises a first upper bottom plate and a first lower bottom plate, the first upper bottom plate and the first lower bottom plate are connected through peripheral side walls, a first cavity is formed in the upper clamping plate 104, and the first lower bottom plate is sunken towards the first upper bottom plate to form a first accommodating groove 1; the lower clamping plate 104 comprises a second upper bottom plate and a second lower bottom plate 105, the second upper bottom plate and the second lower bottom plate are connected through peripheral side walls, a second cavity is formed in the lower clamping plate 105, and the second upper bottom plate is sunken towards the second lower bottom plate to form a second accommodating groove 2;

The first accommodating groove 1 and the second accommodating groove 2 are oppositely arranged and are used for cladding and clamping the soft-package battery; the outer surfaces of the peripheral side walls of the upper clamping plate 104 and the lower clamping plate 105 are respectively provided with a water inlet 109 and a water outlet 108.

The clamp proposed in the present embodiment includes an upper clamping plate 104 and a lower clamping plate 105 for clamping and pressurizing the pouch cell when the pouch cell is tested. Here, taking the upper clamping plate 104 as an example, a sealed cavity is formed between the first upper bottom plate and the first lower bottom plate of the upper clamping plate 104 and the surrounding side walls, and then the first lower bottom plate is recessed toward the first upper bottom plate to form a first accommodating groove 1 for accommodating the soft package battery. The outer wall of the upper clamping plate 104 is correspondingly provided with a water inlet 109 and a water outlet 108, and is used for enabling cooling liquid to enter the upper clamping plate 104 from the water inlet 109 and flow out from the water outlet 108, so that once circulation cooling of the inner part of the upper clamping plate 104 is completed. Meanwhile, the length and the width of the first accommodating groove on the upper clamping plate 104 are matched with the length and the width of the soft package battery, the depth of the accommodating groove is half of the depth of the soft package battery, when the upper clamping plate 104 and the lower clamping plate 105 are oppositely arranged, the soft package battery at the middle position can be fully coated by the first accommodating groove 1 and the second accommodating groove 2, a limiting effect is formed, damage to the battery due to overlarge pressure between the clamping plates in the pressurizing process is avoided, and a certain protection effect is provided for the battery. As shown in fig. 4, because the first accommodating groove 1 is formed by recessing the first lower bottom plate, a reserved space between the peripheral side wall of the upper clamping plate 104 and the peripheral side wall of the first accommodating groove 1 forms a water passing groove 44 _,, when cooling liquid enters the inner space of the upper clamping plate 104 from the water inlet 109, the cooling liquid flows into the water passing groove 44 at the same time, which is equal to the flowing cooling liquid in the inner space of the peripheral side wall of the accommodating groove, so that the upper clamping plate 104 can not only cool the front 111 of the battery in a transverse flow manner, but also cool the peripheral side wall of the first accommodating groove 1 in a longitudinal manner through the water passing groove 44, so that the peripheral side wall of the first accommodating groove 1 can be attached to the peripheral side wall of the battery in use, and cool the peripheral side wall of the battery, in other cases, the battery electrode lugs 25 are exposed outside, and the electrode lug welding 113 with extremely easy temperature rise can be attached to one side of the first accommodating groove 1, so that the whole cooling in the soft package battery testing process can be achieved, the battery temperature can be cooled, and the test requirement temperature can be quickly agreed. The integrated design of the clamping plate and the cooling pipe is carried out, the structure is simple, and the assembly and production cost is reduced under the same cooling effect. The structure of the lower clamping plate 105 is implemented in the same principle as the upper clamping plate 104, and will not be described here.

In an embodiment, a plurality of liquid baffles 45 are disposed on the inner wall of the first lower bottom plate, and the liquid baffles 45 divide the interior of the first chamber into an S-shaped liquid guide channel 43.

In this embodiment, a plurality of liquid baffles 45 are further disposed on the inner wall of the first lower bottom plate in the upper clamping plate 104, and the liquid baffles 45 are connected on the inner walls of opposite sides of the first chamber adjacent to the first lower bottom surface in a staggered manner, so that an S-shaped liquid guide channel 43 is formed in the upper clamping plate 104, and the S-shaped liquid guide channel 43 can increase the rotation and turbulence of the fluid, thereby improving the balance efficiency of the water temperature. Specifically, when the fluid enters the S-shaped liquid guiding channel 43, the channel bends to rotate, and the rotating motion can mix the cooling liquid at different positions together, so that the situation of local overhigh temperature is not easy to occur. The cooling liquid entering from the water inlet 109 flows along the S-shaped liquid guide channel 43 under the guidance of the liquid baffle 45 as shown in the liquid flow direction 46 in fig. 5, and finally flows out from the water outlet 108. Through the design of the S-shaped liquid guide flow channel 43, a more complex flow path can be formed in the upper clamping plate 104 by cooling liquid, the cooling effect is enhanced, and the accuracy and stability of temperature control are improved.

In an embodiment, a plurality of liquid baffles 45 are disposed on the inner wall of the second upper bottom plate, and the liquid baffles 45 divide the interior of the second chamber into S-shaped liquid guide channels.

In this embodiment, the inner wall of the second upper bottom plate in the lower plate 105 is further provided with a plurality of liquid blocking plates 45, and the liquid blocking plates 45 are connected to the inner walls of two opposite sides adjacent to the inner wall of the second upper bottom plate in a staggered manner, so that the S-shaped liquid guiding channels 43 are formed in the lower plate 105, and the S-shaped liquid guiding channels 43 can increase the rotation and turbulence of the fluid, thereby improving the balance efficiency of the water temperature. Specifically, when the fluid enters the S-shaped liquid guiding channel 43, the channel bends to rotate, and the rotating motion can mix the cooling liquid at different positions together, so that the situation of local overhigh temperature is not easy to occur. The cooling liquid entering from the water inlet 109 flows along the S-shaped liquid guide channel 43 under the guidance of the liquid baffle 45 as shown in the liquid flow direction 46 in fig. 5, and finally flows out from the water outlet 108. Through the design of the S-shaped liquid guide flow channel 43, a more complex flow path can be formed in the lower clamping plate 105 by cooling liquid, the cooling effect is enhanced, and the accuracy and stability of temperature control are improved.

In one embodiment, the water inlet 109 is located at a start end of the S-shaped guide channel 43, and the water outlet 108 is located at a tail end of the S-shaped guide channel 43.

In this embodiment, the water inlet 109 is placed at the beginning of the S-shaped flow guide channel 43, and when water enters the S-shaped flow guide channel 43, the water is forced to change direction and rotate due to the curved structure of the channel. This rotational movement increases the kinetic energy of the water flow, giving it a greater flow rate and pressure. Thus, placing the inlet 109 at the beginning ensures that the water flow gets a higher kinetic energy when entering the guide channel, thereby increasing the force pushing the water flow out. The water outlet 108 is positioned at the tail end, and the water outlet 108 is positioned at the tail end, so that when the water flow reaches the tail end, the water flow is discharged at a higher speed, and a better water flow discharging effect is realized. In summary, in the present embodiment, the water inlet 109 is disposed at the start end of the S-shaped flow guiding channel 43, and the water outlet 108 is disposed at the tail end, which is helpful for enhancing the effect of pushing the water flow to be discharged, so that the water flow is easier to be pushed and discharged smoothly.

In an embodiment, the water outlet 108 of the upper clamping plate 104 is communicated with the water inlet 109 of the lower clamping plate 105 for realizing water flow circulation.

In this embodiment, by communicating the water outlet 108 of the upper clamping plate 104 with the water inlet 109 of the lower clamping plate 105, the water outlet 108 of the upper clamping plate 104 and the water inlet 109 of the lower clamping plate 105 are preferably designed to be on the same side, so that the installation is easier. A closed circulation path may be formed between the upper and lower clamping plates 104 and 105 after the communication. When the water flow is discharged from the water outlet 108 of the upper clamping plate 104, the water flow directly enters the water inlet 109 of the lower clamping plate 105 and then circulates again through the liquid guide channel, so that a state that two clamping plates share one water circulation is formed, and the later cooling installation cost is saved.

In one embodiment, the upper clamping plate 104 and/or the lower clamping plate 105 have fixing edges 22 extending outwards on opposite sides, and fastening means are provided on the fixing edges 22 for fastening the clamping plates.

In this embodiment, the opposite sides of the upper clamping plate 104 and/or the lower clamping plate 105 extend outwards to form fixing edges 22, and the fixing edges 22 are preferably disposed on two sides adjacent to the side where the water inlet 109 and the water outlet 108 are located, so that connection and fixing are more convenient. The opposing upper and lower clamp plates 104, 105 can be tightened to better encapsulate and compress the pouch cell.

In an embodiment, the fastening means comprises bolt holes 103 for cooperation with bolts 101 to achieve a fixation between the upper clamping plate 104 and the lower clamping plate 105.

In this embodiment, the fastening means comprise bolt holes 103, the bolt holes 103 being holes provided in the fixed edge 22 of the clamping plate for mounting the bolts 101. The bolt 101 is screwed to fix the upper clamping plate 104 and the lower clamping plate 105 together. Since the bolt 101 connection has strong tensile and torsional strength, the fastening effect between the clamping plates can be ensured. The bolt 101 connection has the characteristic of convenient disassembly, and can conveniently maintain and replace the clamp. When the clamp needs to be replaced or maintained, the clamping plate can be separated only by detaching the nut 102 and the bolt 101. The bolt 101 connection is a low cost fastening means suitable for mass production and application. Meanwhile, since the bolt 101 is a standardized component, purchase and maintenance are also easier. The fastening effect and stability between the jigs can be ensured by adopting the fastening device of the bolt hole 103 and the bolt 101, and the advantages of convenient disassembly and low cost are brought.

In an embodiment, foam is disposed on the contact surface of the first accommodating groove 1 and/or the second accommodating groove 2 and the soft package battery.

In this embodiment, foam is disposed on the contact surface between the first accommodating groove 1 and/or the second accommodating groove 2 and the soft-pack battery, so as to provide an expansion space for the battery and prevent the battery from deforming. Specifically, when a chemical reaction occurs inside the pouch cell, gas is generated, resulting in volume expansion of the cell. If there is not enough expansion space, the battery will deform or rupture, thereby affecting the performance and lifetime of the battery, and therefore, in this embodiment, by providing foam on the contact surface of the receiving groove and the battery, sufficient expansion space can be provided for the battery, avoiding deformation or rupture of the battery. The foam has certain softness and elasticity, can buffer the expansion pressure of the battery, and can protect the battery from being damaged.

In one embodiment, the upper clamping plate 104 and/or the lower clamping plate 105 are made of a heat conductive metal material.

In this embodiment, if the battery temperature rises during the pressurization process and heat cannot be dissipated in time, the battery performance may be reduced, the lifetime may be shortened, and even the safety hazard may be caused. Therefore, the clamping plate made of metal with better heat conducting performance is used in the design of the clamping plate, so that the battery can be helped to conduct and emit heat more quickly, and the temperature of the battery is effectively reduced. Such as aluminum, copper, steel, etc., can rapidly transfer heat generated by the battery to the clamping plate and release the heat to the surrounding environment by way of heat dissipation from the clamping plate surface. Therefore, the heat dissipation efficiency of the battery can be improved, the temperature of the battery can be reduced, and the performance stability and the service life of the battery can be maintained. In addition, the metal material can also provide certain structural strength and stability, support and protect the soft package battery.

In one embodiment, the upper clamping plate 104 and/or the lower clamping plate 105 are provided with an insulating layer on their surface.

In this embodiment, the surface of the upper clamping plate 104 and/or the lower clamping plate 105 is provided with an insulating layer, and the insulating layer can be realized by coating insulating paint or adopting an insulating film, so that the insulating layer can be prevented from being communicated with the clamping plate and the battery.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes using the descriptions and drawings of the present utility model or directly or indirectly applied to other related technical fields are included in the scope of the utility model.

Claims

1. An all-round accuse temperature soft packet of battery anchor clamps, characterized in that includes:

The upper clamping plate comprises a first upper bottom plate and a first lower bottom plate, the first upper bottom plate and the first lower bottom plate are connected through peripheral side walls, a first cavity is formed in the upper clamping plate, and the first lower bottom plate is sunken towards the first upper bottom plate to form a first accommodating groove;

2. The all-around temperature-controlled soft package battery clamp according to claim 1, wherein a plurality of liquid baffle plates are arranged on the inner wall of the first lower bottom plate, and the liquid baffle plates divide the interior of the first chamber to form an S-shaped liquid guide flow channel.

3. The all-around temperature-controlled soft package battery clamp according to claim 1, wherein a plurality of liquid baffle plates are arranged on the inner wall of the second upper bottom plate, and the liquid baffle plates divide the interior of the second chamber to form an S-shaped liquid guide flow channel.

4. The omnibearing temperature-controlled soft package battery clamp according to claim 2 or 3, wherein the water inlet is positioned at the start end of the S-shaped liquid guiding channel, and the water outlet is positioned at the tail end of the S-shaped liquid guiding channel.

5. The omnibearing temperature-controlled soft package battery clamp according to claim 1, wherein the water outlet of the upper clamping plate is communicated with the water inlet of the lower clamping plate for realizing water flow circulation.

6. The omnibearing temperature-controlled soft package battery clamp according to claim 1, wherein the upper clamping plate and/or the lower clamping plate are/is provided with fixing edges extending outwards from two opposite sides, and the fixing edges are provided with fastening devices for realizing fastening connection between the upper clamping plate and the lower clamping plate.

7. The all-around temperature-controlled soft pack battery clamp according to claim 6, wherein the fastening means comprises bolt holes for cooperating with bolts to achieve fixation between the upper clamping plate and the lower clamping plate.

8. The omnibearing temperature-controlled soft package battery clamp according to claim 1, wherein foam is arranged on a contact surface of the first accommodating groove and/or the second accommodating groove and the soft package battery.

9. The omnibearing temperature-controlled soft package battery clamp according to claim 1, wherein the upper clamping plate and/or the lower clamping plate are/is made of heat-conducting metal.

10. The omnibearing temperature-controlled soft package battery clamp according to claim 1, wherein the upper clamping plate and/or the lower clamping plate are/is provided with an insulating layer on the surface.