CN217086710U - Liquid cooling device and battery pack - Google Patents

Abstract

The utility model relates to a battery technology field provides a liquid cooling device and battery package. This liquid cooling device includes the liquid cooling unit of a plurality of parallelly connected intercommunications, the liquid cooling unit includes at least one liquid cooling pipe, wherein, at least one the quantity of liquid cooling pipe in the liquid cooling unit is a plurality of, and is a plurality of the liquid cooling pipe is established ties the intercommunication, adjacent two form the accommodation space that is used for holding the battery between the liquid cooling pipe. The utility model provides a liquid cooling device, liquid cooling unit including a plurality of parallelly connected intercommunications, when the liquid cooling unit of a plurality of parallelly connected intercommunications carries out the liquid cooling to the battery in the accommodation space, the liquid cooling route is shorter, has reduced the difference in temperature between battery package inside battery and the battery, has improved the inside battery temperature uniformity of battery package, simultaneously, because the quantity of the liquid cooling pipe in at least one liquid cooling unit is a plurality of, and a plurality of liquid cooling pipe series connection intercommunication, can reduce the quantity of liquid cooling pipe joint, has reduced manufacturing cost, has improved the security.

Description

Liquid cooling device and battery pack

Technical Field

The utility model relates to a battery technology field especially relates to a liquid cooling device and battery package.

Background

In the correlation technique, adopt the liquid cooling device to carry out the liquid cooling to the battery, when the liquid cooling device carries out the liquid cooling with the form of connecting in parallel to the battery, need more liquid cooling coupling to shunt, not only increase cost appears the weeping phenomenon moreover easily, leads to the battery package to have the safety risk. When the liquid cooling device is used for cooling the batteries in a serial connection mode, although the use of the liquid cooling pipe joints is reduced, the temperature difference between the batteries at the initial position and the final position is large due to the long liquid cooling path, and the whole service life and the cycle performance of the battery pack are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a liquid cooling device and battery package to when improving the inside battery temperature uniformity of battery package, reduction in production cost.

According to the utility model discloses an aspect provides a liquid cooling device, the liquid cooling unit including a plurality of parallelly connected intercommunications, the liquid cooling unit includes at least one liquid cooling pipe, wherein, at least one the quantity of liquid cooling pipe in the liquid cooling unit is a plurality of, and a plurality of liquid cooling pipe series connection intercommunication, adjacent two form the accommodation space that is used for holding the battery between the liquid cooling pipe.

The utility model provides a liquid cooling device, liquid cooling unit including a plurality of parallelly connected intercommunications, when the liquid cooling unit of a plurality of parallelly connected intercommunications carries out the liquid cooling to the battery in the accommodation space, the liquid cooling route is shorter, has reduced the difference in temperature between battery package inside battery and the battery, has improved the inside battery temperature uniformity of battery package, simultaneously, because the quantity of the liquid cooling pipe in at least one liquid cooling unit is a plurality of, and a plurality of liquid cooling pipe series connection intercommunication, can reduce the quantity of liquid cooling pipe joint, has reduced manufacturing cost, has improved the security.

According to the utility model discloses a second aspect provides a battery package, including battery and foretell liquid cooling device, the battery set up in the accommodation space.

The utility model provides a battery pack is owing to used the utility model provides a liquid cooling device not only can improve the inside battery temperature uniformity of battery pack, has reduced manufacturing cost moreover, has improved the security of battery pack.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The 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. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:

fig. 1 is a schematic structural diagram of a liquid cooling apparatus provided in this embodiment;

fig. 2 is a schematic partial structural view of the liquid cooling device provided in this embodiment in cooperation with a battery;

fig. 3 is a schematic diagram illustrating an internal structure of a liquid cooling pipe in the liquid cooling apparatus according to the present embodiment;

fig. 4 is a schematic structural diagram of a liquid cooling apparatus according to a modification of the present embodiment;

fig. 5 is a schematic structural diagram of another liquid cooling apparatus according to another modification of the present embodiment;

fig. 6 is a schematic structural diagram of the battery pack provided in this embodiment.

The reference numerals are explained below:

100-a liquid cooling unit; 101-liquid cooling pipe; 1011-a first pipe joint; 1012-a second pipe joint; 1013-a separator; 1014-a liquid cooling flow passage; 1015-heat conducting cushion pad; 102-a liquid inlet; 103-a liquid outlet; 104-a liquid inlet pipe; 105-a liquid outlet pipe; 106-connecting the pipe section; 200-cylindrical battery.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the 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, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" 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" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, 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 "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

Referring to fig. 1 to 5, the present embodiment provides a liquid cooling apparatus, including a plurality of liquid cooling units 100 connected in parallel, where the liquid cooling unit 100 includes at least one liquid cooling pipe 101, where the number of the liquid cooling pipes 101 in at least one liquid cooling unit 100 is multiple, and the multiple liquid cooling pipes 101 are connected in series, and an accommodating space for accommodating a battery is formed between two adjacent liquid cooling pipes 101.

The liquid cooling device that this embodiment provided, including the liquid cooling unit 100 of a plurality of parallelly connected intercommunications, when the liquid cooling unit 100 of a plurality of parallelly connected intercommunications carries out the liquid cooling to the battery in the accommodation space, the liquid cooling route is shorter, the difference in temperature between battery package inside battery and the battery has been reduced, the inside battery temperature uniformity of battery package has been improved, and simultaneously, because at least one liquid cooling unit 100 includes the liquid cooling pipe 101 of a plurality of series connections intercommunication, can reduce the quantity that liquid cooling pipe 101 connects, the production cost is reduced, and the security is improved.

Specifically, one row of batteries or two rows of batteries may be placed in the accommodating space formed between two adjacent liquid cooling pipes 101. When a row of batteries are placed in the accommodating space formed between two adjacent liquid cooling pipes 101, the two adjacent liquid cooling pipes 101 are respectively positioned at two sides of the same row of batteries, and at the moment, the two adjacent liquid cooling pipes 101 can carry out liquid cooling on the same row of batteries. Referring to fig. 2, when two rows of batteries are placed in the accommodating space formed between two adjacent liquid cooling pipes 101, the two adjacent liquid cooling pipes 101 respectively cool the row of batteries close to the two adjacent liquid cooling pipes.

Illustratively, the liquid cooling device comprises a plurality of liquid cooling units 100 which are connected in parallel, the number of the liquid cooling pipes 101 in the plurality of liquid cooling units 100 is multiple, and the plurality of liquid cooling pipes 101 in each liquid cooling unit 100 are connected in series. The plurality of liquid-cooling tubes 101 are arranged at intervals so that an accommodating space for accommodating a battery can be formed between two adjacent liquid-cooling tubes 101. The number of liquid cooling pipes 101 in each liquid cooling unit 100 may be the same or different.

In one embodiment, the plurality of liquid-cooled tubes 101 are connected in series by the connecting tube segment 106, and the angle between the connecting tube segment 106 and the liquid-cooled tubes 101 is greater than 0 ° and less than 180 °.

Specifically, the plurality of liquid-cooled tubes 101 in the same liquid-cooled unit 100 are connected in series by the connecting tube section 106. For example, referring to fig. 1, the number of the liquid cooling pipes 101 in the liquid cooling unit 100 is three, two adjacent liquid cooling pipes 101 are connected in series and communicated through a connecting pipe segment 106, the connecting pipe segment 106 is in a flat pipe shape, and the connecting pipe segment 106 and the two adjacent liquid cooling pipes 101 may be welded and fixed, or may be integrally formed. The included angle between the connecting pipe section 106 and the liquid cooling pipes 101 is larger than 0 degree and smaller than 180 degrees, so that a containing space can be formed between two adjacent liquid cooling pipes 101 which are communicated in series and the connecting pipe section 106 which is connected with the two liquid cooling pipes 101, and the situation that the plurality of liquid cooling pipes 101 and the connecting pipe section 106 are located on the same side of the battery is avoided.

In one embodiment, a plurality of liquid cooled tubes 101 are spaced in parallel.

For example, the liquid cooling pipes 101 are flat pipes, and the plurality of liquid cooling pipes 101 are arranged in parallel at intervals, that is, the extending directions of the plurality of liquid cooling pipes 101 are parallel, or it can be understood that the plate surfaces of the plurality of liquid cooling pipes 101 are parallel, where the plate surface of the liquid cooling pipe 101 refers to a surface with the largest area of the liquid cooling pipe 101. In one embodiment, referring to fig. 1, the liquid cooling device is provided with a liquid inlet 102, the plurality of liquid cooling units 100 are all communicated with the liquid inlet 102, and the plurality of liquid cooling units 100 are arranged at intervals along a direction far away from the liquid inlet 102; the number of the liquid cooling pipes 101 in the liquid cooling unit 100 close to the liquid inlet 102 is larger than the number of the liquid cooling pipes 101 in the liquid cooling unit 100 far from the liquid inlet 102.

Illustratively, the liquid cooling device comprises three liquid cooling units 100 which are connected in parallel and communicated, wherein the three liquid cooling units 100 are all communicated with the liquid inlet 102, the three liquid cooling units 100 are arranged at intervals along the direction far away from the liquid inlet 102, and the liquid cooling pipes 101 in each liquid cooling unit 100 are also arranged at intervals and in parallel along the direction far away from the liquid inlet 102; referring to fig. 1, the number of the liquid cooling pipes 101 in the three liquid cooling units 100 is gradually reduced from the position close to the liquid inlet 102 to the position far from the liquid inlet 102.

Specifically, when a liquid cooling medium just flows into the liquid cooling unit 100 closest to the liquid inlet 102 from the liquid inlet 102, because the pressure difference is not large, the flow resistance is small, and the flow rate of the liquid cooling medium is large, more liquid cooling pipes 101 which are connected in series can be arranged in the liquid cooling unit 100 closest to the liquid inlet 102; as the distance between the liquid cooling unit 100 and the liquid inlet 102 is larger and larger, the pressure drop decreases more and more, which leads to the gradual decrease of the flow of the liquid cooling medium, therefore, in order to ensure that the liquid cooling medium smoothly passes through all the liquid cooling units 100, the number of the liquid cooling pipes 101 connected in series in the liquid cooling unit 100 needs to be gradually decreased, so as to ensure the liquid cooling effect inside the battery pack, reduce the temperature difference between the battery and the battery, and improve the temperature consistency of the battery inside the battery pack.

In one embodiment, in the plurality of liquid cooling units 100, the number of the liquid cooling pipes 101 in n liquid cooling units 100 is multiple, and the plurality of liquid cooling pipes 101 are connected in series, where n is a positive integer, n is greater than or equal to 2 and less than or equal to the total number of the liquid cooling units 100 in the liquid cooling device; the number of the liquid cooling pipes 101 in the n-m +1 th liquid cooling unit 100 of the n liquid cooling units 100 is a _n-m+1 ，a _n-m+1 2m +1, wherein m is a positive integer of 1 or more and n or less.

It should be noted that the first liquid cooling unit 100 is the liquid cooling unit 100 closest to the liquid inlet 102, and since the number of the liquid cooling pipes 101 in the liquid cooling unit 100 close to the liquid inlet 102 is greater than the number of the liquid cooling pipes 101 in the liquid cooling unit 100 far from the liquid inlet 102, the value of m is gradually decreased from the position close to the liquid inlet 102 to the position far from the liquid inlet 102.

Illustratively, n is 3, that is, the liquid cooling apparatus includes three liquid cooling units 100 connected in parallel, and the values of m are 3, 2, and 1 in sequence from the position close to the liquid inlet 102 to the position far from the liquid inlet 102. Referring to fig. 1, the number of the liquid cooling pipes 101 in the three liquid cooling units 100 is seven, five, and three, respectively, from the direction close to the liquid inlet 102 to the direction away from the liquid inlet 102.

It should be noted that, when n is greater than or equal to 3, at most, the number of the liquid cooling pipes 101 in n-k liquid cooling units 100 may be the same as the number of the liquid cooling pipes 101 in the kth liquid cooling unit 100, where k is a positive integer greater than or equal to 2 and less than n.

For example, the number of the liquid cooling pipes 101 in the last liquid cooling unit 100 may be the same as the number of the liquid cooling pipes 101 in the previous liquid cooling unit 100.

Illustratively, n is 4, and m sequentially takes values of 3, 2, and 1, as shown in fig. 2, the liquid cooling apparatus includes four liquid cooling units 100, and the number of the liquid cooling pipes 101 in the four liquid cooling units 100 is seven, five, three, and three, respectively, in a sequence from being close to the liquid inlet 102 to being far from the liquid inlet 102.

In some embodiments, referring to fig. 3, a liquid cooling device is used to cool the cylindrical battery 200. Liquid-cooled pipe 101 is snakelike flat pipe, and the linear lateral wall of wave of snakelike flat pipe can with cylindrical battery 200's circumferential surface looks adaptation to in carrying out the liquid cooling to cylindrical battery 200.

Referring to fig. 3, the battery may be accommodated in the liquid-cooled device at the outer side of the liquid-cooled tube 101 at both sides, i.e., the side closest to the liquid inlet 102 and the side farthest from the liquid inlet 102. Taking the side closest to the liquid inlet 102 as an example, the outside of the liquid cooling pipe 101 on this side refers to the side of the liquid cooling pipe 101 away from other liquid cooling pipes 101, i.e., the side of the liquid cooling pipe 101 close to the liquid inlet 102. The battery can be placed in the accommodating space between the liquid cooling pipe 101 on the side and the adjacent liquid cooling pipe 101, and the battery can also be placed on the outer side of the liquid cooling pipe 101 on the side, so that the liquid cooling pipe 101 can be used for simultaneously cooling the batteries on two sides of the liquid cooling pipe 101.

In one embodiment, the liquid cooling apparatus further comprises an inlet pipe 104 and an outlet pipe 105; the liquid cooling unit 100 is provided with an inlet and an outlet, the inlet is provided with a first pipe joint 1011, the outlet is provided with a second pipe joint 1012, the first pipe joint 1011 is communicated with the liquid inlet 102 of the liquid cooling device through a liquid inlet pipe 104, and the second pipe joint 1012 is communicated with the liquid outlet 103 of the liquid cooling device through a liquid outlet pipe 105.

Referring to fig. 1, the inlets of the three liquid cooling units 100 are provided with first pipe joints 1011, the outlets of the three liquid cooling units 100 are provided with second pipe joints 1012, the first pipe joints 1011 of the three liquid cooling units 100 are respectively communicated with the liquid inlet pipes 104, and the second pipe joints 1012 of the three liquid cooling units 100 are respectively communicated with the liquid outlet pipes 105, so that the parallel connection of the three liquid cooling units 100 is realized.

Specifically, the liquid cooling medium sequentially passes through the first pipe joints 1011 of the three liquid cooling units 100 from the liquid inlet 102, wherein the liquid cooling medium enters from the first pipe joints 1011 of the first liquid cooling unit 100, then passes through the seven liquid cooling pipes 101 connected in series, and enters from the second pipe joints 1012 of the first liquid cooling unit 100 into the liquid outlet pipe 105; after entering from a first pipe joint 1011 of a second liquid cooling unit 100, a liquid cooling medium enters from a second pipe joint 1012 of the second liquid cooling unit 100 into a liquid outlet pipe 105 through five liquid cooling pipes 101 which are connected in series; after entering from a first pipe joint 1011 of the third liquid cooling unit 100, the liquid cooling medium passes through the three liquid cooling pipes 101 which are connected in series and enters into the liquid outlet pipe 105 from a second pipe joint 1012 of the third liquid cooling unit 100; the liquid cooling medium then joins at the outlet pipe 105, and in the example, the liquid cooling medium enters the inlet pipe 104 again under the action of an external liquid cooling circulation system (e.g., a circulation pump), so as to realize circulation of the liquid cooling medium, thereby performing continuous heat exchange on the battery.

Referring to fig. 1, the total number of liquid-cooling pipes 101 in the three liquid-cooling units 100 is fifteen, and the total number of first pipe joints 1011 and second pipe joints 1012 is six. And the number of joints of the liquid cooling pipes 101 required by connecting fifteen liquid cooling pipes 101 in parallel in the prior art is thirty, so that the production cost of the liquid cooling device provided by the embodiment is low.

Meanwhile, if the serial connection mode in the prior art is adopted, fifteen liquid cooling pipes 101 are connected in series to carry out liquid cooling on multiple columns of batteries, the liquid cooling path is long, so that the temperature difference between the battery at the initial position and the battery at the final position is large, and the whole service life and the cycle performance of the battery pack are influenced.

In the liquid cooling device provided in this embodiment, in order to ensure that the liquid cooling medium smoothly passes through all the liquid cooling units 100, the number of the liquid cooling pipes 101 connected in series in the liquid cooling units 100 is gradually reduced, so that the liquid cooling effect inside the battery pack can be ensured, the temperature difference between the battery and the battery is reduced, and the temperature uniformity of the battery inside the battery pack is improved.

It should be noted that the number of the liquid cooling units 100 and the number of the liquid cooling pipes 101 in each liquid cooling unit 100 are not limited to the above, and other numbers may be selected according to actual production and processing requirements.

In one embodiment, the number of liquid-cooling pipes 101 in the liquid-cooling unit 100 is an odd number.

Particularly, the quantity to liquid cooling pipe 101 in liquid cooling unit 100 is a plurality of, and the condition of a plurality of liquid cooling pipes 101 series connection intercommunication, a plurality of liquid cooling pipes 101 are arranged according to snakelike, the quantity of liquid cooling pipe 101 is the odd number, can make the import and the export of liquid cooling unit 100 be located the both sides of liquid cooling unit 100 respectively, and then guarantee that liquid cooling device's feed liquor pipe 104 and drain pipe 105 can set up respectively in the both sides of liquid cooling unit 100, avoid feed liquor pipe 104 and drain pipe 105 to take place to interfere, be convenient for install a plurality of liquid cooling units 100, and the assembly efficiency is improved.

When the liquid cooling apparatus includes an even number of the liquid cooling units 100 connected in parallel, the total number of the liquid cooling pipes 101 in all the liquid cooling units 100 in the liquid cooling apparatus is an even number, and when the liquid cooling apparatus includes an odd number of the liquid cooling units 100 connected in parallel, the total number of the liquid cooling pipes 101 in all the liquid cooling units 100 in the liquid cooling apparatus is an odd number.

It should be noted that the number of the liquid cooling pipes 101 in the liquid cooling unit 100 may be one.

In one embodiment, the liquid cooling pipe 101 is provided with a plurality of liquid cooling flow passages 1014 inside, and the plurality of liquid cooling flow passages 1014 are arranged at intervals along the height direction of the battery pack.

In some embodiments, a partition 1013 is disposed within the liquid cooling tube 101, the partition 1013 extending in a direction substantially corresponding to the extension direction of the liquid cooling tube 101, the partition 1013 dividing the interior chamber of the liquid cooling tube 101 into a plurality of liquid cooling channels 1014. Illustratively, referring to fig. 4, the number of the partition plates 1013 is three, and three partition plates 1013 divide the inner cavity of the liquid-cooling pipe 101 into four liquid-cooling flow passages 1014, and the four liquid-cooling flow passages 1014 are arranged at intervals in the height direction of the battery pack. The contact area of the liquid cooling medium and the battery can be ensured to be larger by the mode, and the problem that the liquid cooling medium can only cool the bottom of the battery under the action of gravity is avoided.

Referring to fig. 4, an arrow direction Z indicates a height direction of the battery pack. When liquid cooling pipe 101 carries out the liquid cooling to a list of battery in the battery package, a plurality of liquid cooling runner 1014 can carry out the liquid cooling to the different positions of same battery, guarantee that every battery can both obtain comparatively even liquid cooling.

In one embodiment, the inner walls of the liquid cooling channels 1014 are curved. By adopting the mode, the flow resistance of the liquid cooling medium can be reduced, meanwhile, the impact of the liquid cooling medium on the liquid cooling pipe 101 can be relieved, and the damage of the liquid cooling pipe 101 is small.

In some embodiments, two opposite plate surfaces of the partition plate 1013 are arc-shaped surfaces, and the bending directions of the two arc-shaped surfaces are opposite, that is, each arc-shaped surface is bent toward a direction close to the other arc-shaped surface, in such a way, the inner wall of the liquid cooling flow channel 1014 is a smooth arc-shaped surface, so that the flow resistance of the liquid cooling medium can be reduced, and at the same time, the impact of the liquid cooling medium on the liquid cooling pipe 101 can be alleviated, and the damage of the liquid cooling pipe 101 is reduced.

In one embodiment, as shown in FIG. 4, the outer surface of the liquid cooled tube 101 is provided with a thermally conductive cushion 1015.

In some embodiments, the liquid cooling tube 101 is made of metal, and a heat conducting buffer 1015 is disposed on an outer surface of the liquid cooling tube 101.

The liquid cooling pipe 101 of metal material can improve the liquid cooling effect, sets up heat conduction blotter 1015 through the surface at liquid cooling pipe 101, can be under the prerequisite of guaranteeing the liquid cooling effect, and the battery is avoided impaired with the battery looks buffering.

For example, the heat conductive cushion 1015 may be an existing heat conductive silicone cushion.

In one embodiment, an insulating layer is further disposed between the outer surface of the liquid cooling tube 101 and the heat conducting cushion 1015 to ensure insulation between the liquid cooling tube 101 and the battery.

It should be noted that, in the plurality of liquid cooling units 100, the number of the liquid cooling pipes 101 in one of the liquid cooling units 100 may be one. Illustratively, the liquid cooling device includes two liquid cooling units 100 connected in parallel, wherein the number of the liquid cooling pipes 101 in one liquid cooling unit 100 is one, the number of the liquid cooling pipes 101 in the other liquid cooling unit 100 is two, and the two liquid cooling pipes 101 are connected in series. Referring to fig. 5, fig. 5 is a top view of the liquid cooling apparatus, in order to clearly show the connection relationship between each liquid cooling unit 100 and the liquid inlet pipe 104 and the liquid outlet pipe 105, the liquid inlet pipe 104 and the liquid outlet pipe 105 are shown in a staggered manner, and in practice, a liquid inlet pipe joint and a liquid outlet pipe joint may be adopted, the liquid inlet pipe joint is connected to the liquid inlet end of the liquid cooling pipe 101 located at two sides shown in fig. 5, the liquid outlet pipe joint is connected to the liquid outlet end of the liquid cooling pipe 101 located at the middle shown in fig. 5, and the liquid outlet pipe 105 is exemplarily located above the liquid inlet pipe 104.

The embodiment also provides a battery pack, which comprises a battery and the liquid cooling device provided by the embodiment, wherein the battery is arranged in the accommodating space.

The battery pack provided by the embodiment not only can improve the temperature consistency of the battery inside the battery pack, but also reduces the production cost and improves the safety of the battery pack due to the use of the liquid cooling device provided by the embodiment.

Referring to fig. 6, the battery pack that this embodiment provided includes two liquid cooling devices, and two liquid cooling devices are in the inside symmetry setting of battery pack to guarantee that feed liquor pipe 104 is close to battery pack both sides respectively, drain pipe 105 concentrates on the inside intermediate position of battery pack, thereby can the rational utilization battery pack inner space, reduced the overall dimension of battery pack.

In one embodiment, a heat conducting structure is disposed between the liquid cooling unit 100 and the battery.

Illustratively, the heat conducting structure is heat conducting structure glue, and the liquid cooling tube 101 and the battery are bonded and fixed through the heat conducting structure glue, so that the fixing strength of the liquid cooling tube 101 and the battery can be enhanced, and a good heat exchange effect can be realized.

It should be noted that the heat conductive structural adhesive is the prior art.

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

Illustratively, there is a column of cylindrical batteries 200 on each side of each liquid-cooled tube 101.

In one embodiment, the battery pack further includes a battery holder, and the liquid cooling unit 100 and the battery are disposed on the battery holder. The battery bracket is made of an insulating material so as to ensure the safety of the battery pack.

For example, the battery holder is made of plastic.

In one embodiment, the battery bracket is provided with a placement slot, and the battery is fixedly mounted in the placement slot.

Illustratively, the placement groove has a circular cross-sectional shape to fit the circumferential surface of the cylindrical battery 200. The upper surface cloth of battery tray is equipped with multiseriate standing groove, and the parallel interval of multiseriate standing groove sets up, and each standing groove that is listed as includes a plurality of standing grooves, and is exemplary, and adjacent two are listed as standing groove dislocation set, and such mode can make full use of battery tray, places more batteries on battery tray.

In one embodiment, the liquid cooling tubes 101 are serpentine flat tubes that are perpendicular to the bottom plate of the battery pack.

In some embodiments, the battery pack further comprises a box body, the box body comprises a bottom plate, the axis of each cylindrical battery 200 is perpendicular to the bottom plate, the two columns of adjacent cylindrical batteries 200 are clamped by the snake-shaped flat pipes, the snake-shaped flat pipes are perpendicular to the bottom plate of the battery pack, the two sides of the snake-shaped flat pipes can be in contact with the circumferential surface of each cylindrical battery 200, the liquid cooling effect of the batteries is guaranteed, and the consistency of the battery temperature inside the battery pack is improved.

The top of snakelike flat pipe is less than the top of cylinder battery 200, and such mode can increase the area of contact between snakelike flat pipe and the circumferential surface of cylinder battery 200 on the basis of saving the space of battery package direction of height to the utmost, has improved liquid cooling efficiency.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

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

Claims (11)

1. The utility model provides a liquid cooling device, its characterized in that includes a plurality of liquid cooling units (100) of parallelly connected intercommunication, liquid cooling unit (100) include at least one liquid cooling pipe (101), wherein, at least one the quantity of liquid cooling pipe (101) in liquid cooling unit (100) is a plurality of, and is a plurality of liquid cooling pipe (101) are established ties and are communicate, adjacent two form the accommodation space that is used for holding the battery between liquid cooling pipe (101).

2. The liquid cooling device of claim 1, wherein the liquid cooling device is provided with a liquid inlet (102), a plurality of the liquid cooling units (100) are communicated with the liquid inlet (102), and the plurality of the liquid cooling units (100) are arranged at intervals along a direction far away from the liquid inlet (102);

the number of liquid cooling pipes (101) in the liquid cooling unit (100) close to the liquid inlet (102) is greater than the number of liquid cooling pipes (101) in the liquid cooling unit (100) far from the liquid inlet (102).

3. The liquid cooling apparatus according to claim 2, wherein, in the plurality of liquid cooling units (100), the number of the liquid cooling pipes (101) in n of the liquid cooling units (100) is plural, and the plurality of liquid cooling pipes (101) are connected in series, wherein n is a positive integer, n is greater than or equal to 2 and less than or equal to the total number of the liquid cooling units (100) in the liquid cooling apparatus;

in the n liquid cooling units (100), the number of the liquid cooling pipes (101) in the n-m +1 th liquid cooling unit (100) is a _n-m+1 ，a _n-m+1 2m +1, wherein m is a positive integer of 1 or more and n or less.

4. A liquid cooling device according to claim 1, characterized in that the number of liquid cooling pipes (101) in the liquid cooling unit (100) is odd.

5. The liquid cooling device according to any of the claims 1 to 4, characterized in that a plurality of said liquid cooling pipes (101) are connected in series by a connecting pipe section (106), and the angle between said connecting pipe section (106) and said liquid cooling pipes (101) is larger than 0 ° and smaller than 180 °.

6. The liquid cooling device of claim 5, wherein a plurality of said liquid cooling tubes (101) are spaced apart in parallel.

7. The liquid cooling device as claimed in any one of claims 1 to 4, wherein the liquid cooling pipe (101) is provided with a plurality of liquid cooling flow passages (1014) therein, and inner walls of the liquid cooling flow passages (1014) are curved.

8. A battery pack comprising a battery and the liquid cooling apparatus of any one of claims 1 to 7, wherein the battery is disposed in the accommodating space.

9. The battery pack according to claim 8, wherein a heat conducting structure is provided between the liquid cooling unit (100) and the battery.

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

11. The battery pack of claim 10, wherein the liquid cooling tube (101) is a serpentine flat tube that is perpendicular to the bottom panel of the battery pack.

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