CN217035862U - Battery bays and battery packs - Google Patents

Abstract

The utility model relates to the technical field of batteries, and provides a battery bracket and a battery pack. The battery bracket comprises a bracket body, wherein the bracket body is provided with a placing groove for fixing a battery, a liquid cooling runner is integrated in the bracket body, and at least part of the liquid cooling runner is opposite to the groove wall of the placing groove. According to the battery bracket provided by the utility model, the bracket body is provided with the placing groove for fixing the battery, the battery can be placed in the placing groove, the liquid cooling flow channel is integrated in the bracket body, so that the overall structural stability is improved, and meanwhile, at least part of the liquid cooling flow channel is arranged opposite to the groove wall of the placing groove, so that the liquid cooling flow channel can carry out liquid cooling on the periphery of the battery placed in the placing groove, and further the liquid cooling effect on the periphery of the battery is improved.

Description

Battery bays and battery packs

technical field

The utility model relates to the technical field of batteries, in particular to a battery bracket and a battery pack.

Background technique

In the related art, the structural stability of the liquid cooling tube is poor, and the liquid cooling tube and the battery need to be fixed by gluing, which affects the liquid cooling effect of the liquid cooling tube on the periphery of the battery.

Utility model content

The utility model provides a battery bracket and a battery pack to improve the liquid cooling effect on the outer periphery of the battery.

According to a first aspect of the present invention, a battery bracket is provided, including a bracket body, the bracket body is provided with a placement slot for fixing the battery, and a liquid cooling flow channel is integrated inside the bracket body, At least part of the liquid cooling flow channel is disposed opposite to the groove wall of the placing groove.

The battery bracket provided by the utility model includes a bracket body. Since the bracket body is provided with a placement slot for fixing the battery, the battery can be placed in the placement slot. The overall structural stability is improved. At the same time, at least part of the liquid-cooling flow channel is arranged opposite to the groove wall of the placing slot. Therefore, the liquid-cooling flow channel can liquid-cool the outer periphery of the battery placed in the placing slot, thereby improving the stability of the battery. Liquid cooling effect on the periphery of the battery.

According to a second aspect of the present invention, a battery pack is provided, which includes a battery and the above-mentioned battery holder, and the battery is located in the placement slot.

The battery pack provided by the utility model, because the battery bracket provided by the present utility model is used, not only can fix the battery, but also can effectively liquid-cool the outer periphery of the battery.

Description of drawings

For a better understanding of the present disclosure, reference may be made to the embodiments shown in the following figures. Components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. Additionally, the relevant elements or components may be arranged differently as known in the art. Furthermore, in the drawings, the same reference numerals refer to the same or similar parts throughout the various figures. in:

FIG. 1 is a schematic structural diagram of a battery bracket provided in this embodiment;

FIG. 2 is a schematic diagram of the internal structure of the battery holder provided in this embodiment;

FIG. 3 is a schematic structural diagram of the cooperation between the battery bracket and the battery provided in this embodiment;

FIG. 4 is a schematic diagram of the internal structure of a modification of the battery tray provided in this embodiment;

FIG. 5 is a schematic structural diagram of a modification of the battery bracket provided in this embodiment;

FIG. 6 is a partial structural schematic diagram of a modification of the battery bracket provided in this embodiment;

FIG. 7 is a schematic partial structure diagram of the battery pack provided in this embodiment.

The reference numerals are explained as follows:

100, bracket body; 101, placement groove; 1011, groove wall; 1012, groove bottom; 102, liquid cooling runner; 1020, arc surface; 1021, runner wall; 1022, sub-runner; 1023, bottom end wall surface; 103, auxiliary flow channel; 200, cylindrical battery; 201, first electrode terminal; 202, second electrode terminal.

Detailed ways

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, so it should be understood that various modifications may be made to the example embodiments without departing from the scope of the present disclosure. modifications and changes.

In the description of the present disclosure, unless otherwise explicitly specified and limited, the terms "first" and "second" are only used for the purpose of description, and cannot be construed as indicating or implying relative importance; the term "plurality" is a means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the/said" or "an" object is also intended to mean one of the possible plurality of such objects.

Unless otherwise specified or stated, the terms "connected", "fixed", etc. should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection, or a signal connection. Connection; "connection" can be directly connected or indirectly connected through an intermediary. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

Further, in the description of the present disclosure, it should be understood that the directional terms "upper", "lower", "inner", "outer" and the like described in the exemplary embodiments of the present disclosure are from the angles shown in the drawings. described, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being connected "on", "under", or "inside" or "outside" another element(s), it can not only be directly connected "On", "under" or "inside", "outside" another element(s), or indirectly connected "on", "under" or "outside" another element(s) through intervening elements inside and outside".

This embodiment provides a battery tray. FIG. 1 is a schematic structural diagram of the battery tray provided in this embodiment, FIG. 1 only shows a partial structural schematic diagram of the battery tray, and FIG. 2 is a schematic diagram of the internal structure of the battery tray provided in this embodiment, along lines parallel to the tray The bracket body 100 is cross-sectioned from the direction of the upper surface of the main body 100 to obtain the schematic diagram of the internal structure of the battery bracket shown in FIG. 2 . Referring to the structures shown in FIGS. 1 and 2 , the battery bracket provided in this embodiment , including a bracket body 100, the bracket body 100 is provided with a placement slot 101 for fixing the battery, the interior of the bracket body 100 is integrated with a liquid cooling channel 102, and at least part of the liquid cooling channel 102 is connected to the groove wall of the placement slot 101. 1011 Relative settings.

The battery bracket provided in this embodiment includes a bracket body 100. Since the bracket body 100 is provided with a placement slot 101 for fixing the battery, the battery can be placed in the placement slot 101. Since the interior of the bracket body 100 is integrated with liquid The cold runner 102 improves the overall structural stability. At the same time, at least part of the liquid cooling runner 102 is disposed opposite to the groove wall 1011 of the placing slot 101 . The outer periphery of the battery is liquid-cooled, thereby improving the liquid cooling effect on the outer periphery of the battery.

In one embodiment, the placement groove 101 is used to place the cylindrical battery 200 , and the groove wall 1011 of the placement groove 101 is used to contact the circumferential surface of the cylindrical battery 200 .

The outer circumference of the battery refers to the circumferential surface of the cylindrical battery 200 . Specifically, the circumferential surface refers to the outer surface of the cylindrical battery 200 located between the top surface and the bottom surface thereof, wherein the top surface and the bottom surface of the cylindrical battery 200 refer to two surfaces perpendicular to the axis of the cylindrical battery 200 and disposed opposite to each other. surface.

Exemplarily, the placement slot 101 includes a slot wall 1011 and a slot bottom 1012, and the shape of the cross section of the placement slot 101 is a circle, that is, the shape of the cross section of the placement slot 101 parallel to the slot bottom 1012 is a circle, so that It is ensured that the groove wall 1011 of the placing groove 101 can fit with the circumferential surface of the cylindrical battery 200 .

The upper surface of the bracket body 100 is provided with multiple rows of placement grooves 101 , the multiple rows of placement slots are arranged in parallel and spaced apart, and the liquid cooling channels 102 are located between two adjacent rows of placement slots 101 . Each row of placement slots includes a plurality of placement slots 101 . For example, as shown in FIG. 1 , the placement slots 101 in two adjacent rows are staggered. In this way, the bracket body 100 can be fully utilized, and more many batteries.

In one embodiment, the shape of the orthographic projection of the liquid cooling channel 102 on the bottom surface of the bracket body 100 is a wavy line.

Referring to FIG. 2 , the shape of the orthographic projection of the liquid cooling channel 102 on the bottom surface of the bracket body 100 is a wavy line. The channel wall 1021 of the wavy liquid cooling channel 102 can be adapted to the circumferential surface of the cylindrical battery 200 . Compared with the linear liquid cooling channel, the channel wall 1021 of the wavy liquid cooling channel 102 The contact area with the circumferential surface of the cylindrical battery 200 is larger, and the liquid cooling effect is better. Two sides of the liquid cooling channel 102 are respectively provided with a row of placement grooves 101 , and the two rows of placement grooves 101 are staggered.

It should be noted that the bracket body 100 can also be used to fix the prismatic battery. When the bracket body 100 is used to fix the prismatic battery, the shape of the cross section of the placement groove 101 is a rectangle. Meanwhile, the shape of the orthographic projection of the liquid cooling channel 102 on the bottom surface of the bracket body 100 is a rectangle.

In one embodiment, at least part of the groove wall 1011 of the placement groove 101 is the flow channel wall 1021 of the liquid cooling flow channel 102 .

Specifically, at least part of the groove wall 1011 of the placement groove 101 is the outer surface of the flow channel wall 1021 of the liquid cooling flow channel 102 .

If the thickness of the flow channel wall 1021 of the liquid cooling flow channel 102 is too small, the structural strength will be deteriorated, and the flow channel wall 1021 will be easily broken, resulting in leakage of the liquid cooling medium. If the thickness of the flow channel wall 1021 is too large, the liquid cooling effect will be reduced, and the outer periphery of the battery cannot be effectively liquid cooled.

Therefore, the thickness of the channel wall 1021 of the liquid cooling channel 102 in this embodiment is 2-20 mm.

It should be noted that the thickness of the channel wall 1021 of the liquid cooling channel 102 may be, but not limited to, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm or 20mm.

It should be noted that the groove wall 1011 of the placing groove 101 and the circumferential surface of the cylindrical battery 200 can be in direct contact or indirect contact, for example, the groove wall 1011 of the placing groove 101 and the battery are indirectly in contact through thermal conductive structural glue and fixed.

Referring to FIG. 3 , the cylindrical battery 200 includes a first electrode terminal 201 and a second electrode terminal 202 . Exemplarily, the first electrode terminal 201 is a battery case, the second electrode terminal 202 is a pole post, and at least part of the pole post protrudes from the battery case, wherein the lead-out of the battery case is the end face of the battery case. , the lead out of the pole is the end face of the pole protruding from the battery casing, the end face of the battery casing and the end face of the pole pole are located on the same side of the battery, and the end face of the pole pole is higher than the end face of the battery casing.

It should be noted that the polarity of the first electrode terminal 201 is opposite to that of the second electrode terminal 202, and the two are insulated from each other. Specifically, when the first electrode terminal 201 is a positive polarity terminal, the second electrode terminal 202 is a negative polarity terminal; otherwise, when the first electrode terminal 201 is a negative polarity terminal, the second electrode terminal 202 is a positive polarity terminal.

In some embodiments, the height direction of the cylindrical battery 200 is consistent with the depth direction of the placement slot 101 , and the height of the liquid cooling flow channel 102 along the depth direction of the placement slot 101 is 30%-70% of the height of the cylindrical battery 200 .

If the height D of the liquid cooling channel 102 along the depth direction of the placement tank 101 is too small, the contact area between the liquid cooling channel 102 and the outer periphery of the battery is too small, which in turn leads to poor liquid cooling effect on the battery. The height D of the liquid cooling channel 102 along the depth direction of the placement groove 101 is too large, resulting in the overall thickness of the bracket body 100 being too thick to meet the requirements of lightweight design, thereby affecting the overall energy density of the battery pack.

Therefore, the height D is 30%-70% of the height of the cylindrical battery 200 .

The height H of the cylindrical battery 200 is the total length of the cylindrical battery 200 in the direction perpendicular to the plane of the bottom plate of the bracket body 100 .

It should be noted that the height D of the liquid cooling channel 102 along the depth direction of the placement groove 101 may be, but not limited to, 30%, 35%, 40%, 45%, 46%, 47% of the height H of the cylindrical battery 200 , 48%, 49%, 50%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68 %, 69% or 70%.

In some embodiments, the bottom end wall 1023 of the liquid cooling channel 102 may extend to a position substantially flush with the bottom 1012 of the placing slot 101 , so as to ensure that the liquid cooling channel 102 can be in contact with the circumferential surface of the cylindrical battery 200 . The contact area is larger.

It should be noted that the bottom wall surface 1023 of the liquid cooling channel 102 may also extend to the bottom of the bracket body 100 , that is, as shown in FIG. 4 , the bottom wall surface 1023 of the liquid cooling channel 102 may be located in the placement groove Between the lower surface of the groove bottom 1012 of 101 and the lower surface of the bracket body 100 .

In one embodiment, as shown in FIG. 5 and FIG. 6 , an auxiliary flow channel 103 is integrated inside the bracket body 100 , and the auxiliary flow channel 103 is located at the bottom of the bracket body 100 , which can further improve the liquid cooling efficiency. Exemplarily, the auxiliary flow channels 103 correspond to the groove bottoms 1012 of the placement grooves 101 . Specifically, a plurality of auxiliary flow channels 103 are evenly distributed on the groove bottoms 1012 of the placement grooves 101 in each row.

In one embodiment, as shown in FIG. 5 and FIG. 6 , the liquid cooling flow channel 102 includes a plurality of sub-flow channels 1022 , and the plurality of sub-flow channels 1022 are arranged at intervals along the height direction of the bracket body 100 . Referring to FIG. 5 , the arrow direction Z indicates the height direction of the bracket body 100 . When liquid-cooling a row of batteries in the battery pack, the plurality of sub-channels 1022 can liquid-cool different positions of the same battery, ensuring that each battery can obtain relatively uniform liquid cooling.

Exemplarily, as shown in FIG. 6 , the number of the sub-flow channels 1022 is six, and the six sub-flow channels 1022 are arranged at intervals along the height direction of the bracket body 100 . This method can ensure a larger contact area between the liquid cooling medium and the battery, and avoid the problem that the liquid cooling medium can only liquid cool the bottom of the battery under the action of gravity.

In some embodiments, the flow directions of the liquid cooling medium in the plurality of sub-channels 1022 are the same.

In some embodiments, as shown in FIG. 6 , the opposite two wall surfaces of the sub-channel walls between two adjacent sub-channels 1022 are arc-shaped surfaces 1020 , and the two arc-shaped surfaces 1020 are curved in opposite directions. That is to say, each arc-shaped surface 1020 is curved toward the direction close to the other arc-shaped surface 1020, so that the inner walls of the plurality of sub-channels 1022 smoothly transition, thereby reducing the flow resistance of the liquid cooling medium. The impact of the liquid cooling medium on the liquid cooling flow channel 102 can be alleviated, and the damage to the liquid cooling flow channel 102 can be reduced.

In one embodiment, the number of the liquid cooling flow channels 102 is multiple, and the plurality of liquid cooling flow channels 102 are arranged at intervals along the length direction of the bracket body 100 .

Referring to FIG. 5 , the arrow direction X represents the longitudinal direction of the bracket body 100 . The plurality of liquid cooling channels 102 are arranged at intervals along the length direction of the bracket body 100 , and the rows of placement slots 101 are also arranged at intervals along the length direction of the bracket body 100 .

Specifically, a row of placement slots 101 may be provided between two adjacent liquid cooling channels 102 , or two rows of placement slots 101 may be provided. Referring to FIG. 1 and FIG. 5 , when a row of placement slots 101 is provided between two adjacent liquid cooling channels 102 , the two adjacent liquid cooling channels 102 are located on both sides of the same row of placement slots 101 , respectively. When the batteries are located in the placement slot 101 , the two adjacent liquid cooling channels 102 can liquid-cool the batteries in the same row. When two rows of placement slots 101 are arranged between two adjacent liquid cooling channels 102 , the two adjacent liquid cooling channels 102 respectively perform liquid cooling for a row of batteries adjacent to them.

In one embodiment, the material of the bracket body 100 is a thermally conductive insulating material. This way can ensure that the bracket body 100 can not only achieve heat exchange between the liquid cooling medium and the battery, but also ensure the insulation between the battery and the battery, thereby improving the safety of the battery pack.

Exemplarily, the thermally conductive insulating material may be Liquid Crystal Polymer (LCP), Polyphenylene sulfide (PPS), Polypropylene (PP), polyimide tape (PI) tape) one or more. In some embodiments, the thermally conductive insulating material may be Liquid Crystal Polymer (LCP), Polyphenylene sulfide (PPS), Polypropylene (PP), polyimide One or more of the tapes (PI tapes), and add thermally conductive ceramic materials, such as BeO, AlN, BN, MgO, Al ₂ O ₃ or SiC, etc.

This embodiment also provides a battery pack, which includes a battery and the battery holder provided in this embodiment, and the battery is located in the placement slot 101 .

Since the battery pack provided in this embodiment uses the battery bracket provided in this embodiment, not only the battery can be fixed, but also the outer periphery of the battery can be effectively liquid-cooled.

In some embodiments, the height direction of the battery is consistent with the depth direction of the placement slot 101 , and the height of the liquid cooling flow channel 102 along the depth direction of the placement slot 101 is 30%-70% of the height of the battery.

The height of the liquid cooling flow channel 102 along the depth direction of the placement groove 101 is too small, resulting in a too small contact area between the liquid cooling flow channel 102 and the outer periphery of the battery, which in turn leads to poor liquid cooling effect on the battery. The height of the liquid cooling channel 102 along the depth direction of the placement slot 101 is too large, resulting in the overall thickness of the bracket body 100 being too thick to meet the requirements of lightweight design, thereby affecting the overall energy density of the battery pack.

Therefore, the height is 30%-70% of the height of the battery.

Exemplarily, the height of the battery is 50-300 mm.

It should be noted that the height of the liquid cooling channel 102 along the depth direction of the placement groove 101 may be, but not limited to, 30%, 35%, 40%, 45%, 46%, 47%, 48%, 49%, 50%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69% or 70%.

In one embodiment, the battery is a cylindrical battery 200 . The height direction of the battery pack in this embodiment is consistent with the axial direction of the cylindrical battery 200 .

Exemplarily, the height D of the liquid cooling channel 102 in the depth direction of the placement groove 101 is 30%-70% of the height H of the cylindrical battery 200 .

It should be noted that the battery may also be a square battery.

In one embodiment, as shown in FIG. 7 , the liquid cooling channel 102 extends along a wavy line to match the circumferential surface of the cylindrical battery 200 .

The channel wall 1021 of the wavy liquid cooling channel 102 can be adapted to the circumferential surface of the cylindrical battery 200 . Compared with the linear liquid cooling channel 102 , the channel wall of the wavy liquid cooling channel 102 The contact area between 1021 and the circumferential surface of the cylindrical battery 200 is larger, and the liquid cooling effect is better. Two sides of the liquid cooling channel 102 are respectively provided with a row of placement grooves 101 , and the two rows of placement grooves 101 are staggered.

It should be noted that the channel wall 1021 of the liquid cooling channel 102 and the circumferential surface of the cylindrical battery 200 may be in direct contact or indirect contact, for example, the channel wall 1021 of the liquid cooling channel 102 and the cylindrical battery 200 They are indirectly contacted and fixed by thermal conductive structural adhesive.

In one embodiment, the battery pack further includes a liquid cooling pipe joint, and the liquid cooling pipe joint is welded with the bracket body 100 .

Specifically, both ends of each liquid cooling channel 102 are provided with a liquid cooling pipe joint, wherein one liquid cooling pipe joint is used to communicate with the liquid supply port of the external liquid cooling circulation system, and the other liquid cooling pipe joint It is used to communicate with the liquid return port of the external liquid cooling circulation system. The liquid cooling pipe joints that communicate with the liquid supply port are located on the same side of the bracket body 100 and communicate with the liquid inlet pipe. The liquid cooling pipe connected to the liquid return port The pipe joint is located on the other side of the bracket body 100 and communicated through the liquid outlet pipe, so as to realize the parallel connection of the plurality of liquid cooling channels 102 .

Exemplarily, the liquid inlet pipe and the liquid outlet pipe are located on both sides of the bracket body 100 and extend along the arrow direction X in FIG. 5 .

Exemplarily, the bracket body 100 is a metal structure, or the bracket body 100 is injection-molded with metal welding parts, so as to be welded and fixed with the liquid cooling pipe joint.

Exemplarily, the material of the bracket body 100 is thermoplastic, and at least part of the liquid-cooled pipe joint is made of thermoplastic, and the two can be welded and fixed by using an existing plastic welding process.

In some embodiments, the side wall of the bracket body 100 is provided with a positioning groove, the bottom of the positioning groove is communicated with the liquid cooling channel 102, and a part of the liquid cooling pipe joint is limited in the positioning groove, and then the liquid cooling pipe joint is placed in the positioning groove. The bracket body 100 is welded and fixed. Due to the positioning groove, it can ensure that the inner cavity of the liquid cooling pipe joint corresponds to and communicates with the liquid cooling flow channel 102, which is convenient for welding, and also improves the welding strength and precision, thereby effectively preventing liquid cooling. Media leakage.

Other embodiments of the present disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the inventive creations disclosed herein. This disclosure is intended to cover any modifications, uses, or adaptations of the present invention that follow the general principles of this disclosure and include common knowledge or practice in the art not disclosed by this disclosure means. The specification and example embodiments are to be regarded as exemplary only, with the true scope and spirit of the disclosure being indicated by the appended claims.

It is to be understood that the present disclosure is not limited to the precise structures described above and illustrated in the accompanying drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of protection of the present disclosure is limited only by the appended claims.

Claims (11)

1. The battery bracket is characterized by comprising a bracket body (100), wherein a placing groove (101) for fixing a battery is formed in the bracket body (100), a liquid cooling flow channel (102) is integrated in the bracket body (100), and at least part of the liquid cooling flow channel (102) is opposite to the groove wall (1011) of the placing groove (101).

2. The battery carrier as claimed in claim 1, wherein at least a portion of the wall (1011) of the placement groove (101) is a channel wall (1021) of the liquid cooling channel (102).

3. The battery carriage according to claim 1, characterized in that the placement groove (101) is used for placing a cylindrical battery (200), and a groove wall (1011) of the placement groove (101) is used for contacting with a circumferential surface of the cylindrical battery (200).

4. The battery carrier according to claim 1, wherein an orthographic projection of said liquid cooling flow passage (102) on a bottom surface of said carrier body (100) is in a shape of a wavy line.

5. The battery carrier according to claim 1, characterized in that an auxiliary flow channel (103) is integrated inside the carrier body (100), the auxiliary flow channel (103) being located at the bottom of the carrier body (100).

6. The battery carrier as claimed in claim 5, wherein said liquid cooling flow passage (102) includes a plurality of sub-flow passages (1022), said plurality of sub-flow passages (1022) being arranged at intervals in a height direction of said carrier body (100).

7. The battery carrier as claimed in any one of claims 1 to 6, wherein the number of the liquid cooling flow passages (102) is plural, and the plural liquid cooling flow passages (102) are provided at intervals along a length direction of the carrier body (100).

8. A battery pack, characterized in that it comprises a battery and a battery carrier according to any one of claims 1 to 7, said battery being located in said placement groove (101).

9. The battery pack according to claim 8, wherein a height direction of the battery coincides with a depth direction of the placement groove (101), and a height of the liquid-cooling flow passage (102) in the depth direction of the placement groove (101) is 30% to 70% of the height of the battery.

10. The battery pack according to claim 8, wherein the battery is a cylindrical battery (200).

11. The battery pack according to claim 10, wherein the liquid cooling flow passage (102) extends in a wavy line shape to fit to a circumferential surface of the cylindrical battery (200).

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