CN217485591U - Liquid cooling battery subrack - Google Patents

Abstract

The utility model discloses a liquid cooling battery subrack, include: the cooling device comprises a box body, a cooling plate and a battery module; the cooling plate is arranged at the bottom of the box body, the battery module is accommodated in the box body, and the battery module is positioned on the cooling plate; the battery module includes the battery that a plurality of array set up, and the inside runner that is provided with of cooling plate, runner include a plurality of subchannel, and a plurality of subchannel and every battery one-to-one of battery module. This liquid cooling battery subrack sets up the subchannel that can with every battery one-to-one through setting up the cooling plate in the cooling plate, and the setting of subchannel can cool off every battery better, improves the samming performance of battery subrack, prolongs the life of battery subrack.

Description

Liquid cooling battery subrack

Technical Field

The utility model relates to a battery subrack technical field, concretely relates to liquid cooling battery subrack.

Background

With the progress and development of the battery energy storage industry, the battery plug box adopting the traditional air cooling technology is difficult to meet the market demand, and the better temperature equalization performance and longer service life become the call of the market; meanwhile, the temperature rise of the battery caused by the high multiplying power requirement of charging and discharging becomes an important problem of the battery energy storage system.

At present, battery subrack among the energy storage system, the radiating mode mainly has natural forced air cooling and forced air cooling, along with the promotion of subrack system capacity, the problem that the radiating efficiency is low that the increase of subrack overall dimension and forced air cooling itself exist, traditional air cooling technique can't satisfy battery system to temperature rise and temperature uniformity's control, and to the charge-discharge occasion of high magnification very much, battery system's temperature uniformity performance can be worse, and then aggravate the life-span decay of electric core in the battery subrack.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems existing in the prior art, the liquid-cooled battery plug-in box is provided.

The specific technical scheme is as follows:

a liquid-cooled battery subrack mainly comprises: the cooling device comprises a box body, a cooling plate and a battery module;

the cooling plate is arranged at the bottom of the box body, the battery module is accommodated in the box body, and the battery module is positioned on the cooling plate;

the battery module includes the battery that a plurality of array set up, the inside runner that is provided with of cooling plate, the runner includes a plurality of subchannel, a plurality of the subchannel with every of battery module the battery one-to-one.

In foretell liquid-cooled battery subrack, still have such characteristic, a plurality of the subchannel end to end communicates in proper order and forms a crooked cooling circuit that walks around, the side of cooling plate is provided with a inlet and a liquid outlet, the inlet the liquid outlet respectively with two ports of cooling circuit are linked together.

A liquid-cooled battery compartment of the kind described above, also having the feature that the runners near the outlet are more closely routed than the runners near the inlet.

The liquid-cooled battery box is characterized in that a heat conducting pad is clamped between the cooling plate and the battery module.

In the liquid-cooled battery box, the cooling plate and the bottom of the box body are provided with heat-insulating buffer foam.

In the above-mentioned liquid cooling battery subrack, still have such a characteristic, bottom half is provided with first strengthening rib and second strengthening rib, the extending direction of first strengthening rib with the length direction of battery is the same, the extending direction of second strengthening rib with the width direction of battery is the same, the height of first strengthening rib is higher than the height of second strengthening rib.

The liquid-cooled battery box is characterized in that the heat-insulation buffer foam is distributed in a space formed by the first reinforcing rib and the second reinforcing rib, and the height of the heat-insulation buffer foam is higher than that of the first reinforcing rib.

In foretell liquid-cooled battery subrack, still have such characteristic, the side of box is provided with the inlet connector and goes out the liquid joint, the inlet connector with the inlet is linked together, go out the liquid joint with the liquid outlet is linked together.

In the above liquid-cooled battery box, the liquid-cooled battery box further has the characteristic that a BMU assembly is further arranged on the side, where the liquid inlet joint is arranged, of the box body, and a detachable protective shell is further arranged on the outer side of the BMU assembly.

The positive effects of the technical scheme are as follows:

the utility model provides a pair of liquid cooling battery subrack, through setting up the cooling plate, set up in the cooling plate can with every battery one-to-one's subchannel, the setting of subchannel can cool off every battery better, improve the samming performance of battery subrack battery system (battery subrack and other structures for example the regulator cubicle forms battery system) even, prolong battery subrack battery system's life even.

Drawings

Fig. 1 is an overall structural schematic diagram of the liquid-cooled battery subrack provided by the present invention;

fig. 2 is an exploded schematic view of a liquid-cooled battery box according to the present invention;

FIG. 3 is a schematic view of a portion of the liquid-cooled battery receptacle of FIG. 2;

fig. 4 is a schematic structural diagram of a cooling plate according to the present invention.

In the drawings: 1. a box body; 11. a liquid inlet joint; 12. a liquid outlet joint; 13. a first reinforcing rib; 14. a second reinforcing rib; 15. mounting holes; 2. a cooling plate; 21. a shunt channel; 22. a liquid inlet; 23. a liquid outlet; 3. a battery module; 31. a battery; 4. a thermally conductive pad; 5. heat insulation buffer foam; 6. a BMU component; 7. a protective shell.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail by the following embodiments in combination with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like are used in the orientation or positional relationship indicated on the drawings, which are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the invention.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 4, the utility model discloses a liquid cooling battery subrack, this liquid cooling battery subrack includes: case 1, cooling plate 2, and battery module 3.

The cooling plate 2 is arranged at the bottom of the box body 1, the battery module 3 is accommodated in the box body 1, and the battery module 3 is positioned on the cooling plate 2;

the battery module 3 includes the battery 31 that a plurality of array set up, the inside runner that is provided with of cooling plate 2, the runner includes a plurality of subchannel 21, a plurality of subchannel 21 with every of battery module 3 battery 31 one-to-one.

Wherein, the flow channel is filled with cooling liquid, and the cooling liquid can be cooling water or cooling solution of chemical components with cooling effect. The cooling of the battery 31 placed thereon is achieved by the flow of the cooling liquid within the flow channel.

Optionally, in this embodiment, a plurality of branch channels 21 are sequentially connected end to form a cooling circuit that curves and bypasses, a liquid inlet 22 and a liquid outlet 23 are disposed on a side surface of the cooling plate 2, and the liquid inlet 22 and the liquid outlet 23 are respectively communicated with two ports of the cooling circuit.

Since the cooling water in the cooling circuit is heated during the cooling process, the cooling effect is worse the further to the rear, and in order to improve this situation, the branch passage 21 near the liquid outlet 23 is more densely detoured than the branch passage 21 near the liquid inlet 22, so as to achieve the purpose of making the temperature of all the cells 31 as uniform as possible.

Optionally, in some embodiments, a plurality of the branch channels 21 are respectively and independently disposed, and each branch channel 21 is respectively disposed with an inlet and an outlet, and at this time, each branch channel 21 may be disposed in the same curved bypass structure. This arrangement also achieves the object of making the temperature of all the batteries 31 to be cooled relatively uniform.

The cooling plate 2 sets up inside box 1, in order to send into the coolant liquid that is located the box 1 outside in the runner that is located the box 1 inside, optionally, each inlet 22, each the lateral wall that box 1 was directly worn out to liquid outlet 23 reachs the box 1 outside, optionally, in this embodiment, the side of box 1 is provided with liquid inlet joint 11 and goes out liquid joint 12, and liquid inlet joint 11 and the head that goes out liquid joint 12 are located the outside of box 1, liquid inlet joint 11 with inlet 22 is linked together, go out liquid joint 12 with liquid outlet 23 is linked together.

Optionally, when there is more than one liquid inlet and outlet, a pipeline communicating all the liquid inlets and all the liquid outlets may be disposed outside the cooling plate 2, all the branch channels 21 are gathered together, and then directly penetrate through the sidewall of the box 1 to reach the outside of the box 1 or respectively communicate with the liquid inlet joint 11 and the liquid outlet joint 12 one by one.

Optionally, in some embodiments, the cooling plate 2 is provided thicker to accommodate the flow channels that need to be provided with a certain height.

Optionally, in this embodiment, the cooling plate 2 is thinner, and the side of the flow channel away from the battery 31 is set to be a protruding structure, so that the thickness of the cooling plate 2 can be reduced to reduce the weight of the cooling plate 2, and further reduce the weight of the battery box.

Further, a thermal pad 4 is interposed between the cooling plate 2 and the battery module 3. The thermal pad 4 contacts the battery 31 of the battery module 3 from above and contacts the cooling plate 2 from below, and conducts heat of the battery 31 to the cooling plate 2, and the heat is taken away by the cooling plate 2. Preferably, the thermal pad 4 is placed in a compressed state.

Further, the cooling plate 2 and the bottom of the box body 1 are provided with heat insulation buffer foam 5.

Specifically, in this embodiment, the bottom of the case 1 is provided with a first rib 13 and a second rib 14, the first rib 13 extends in the same direction as the longitudinal direction of the battery 31, the second rib 14 extends in the same direction as the width direction of the battery 31, and the first rib 13 is higher than the second rib 14. This is arranged so that the battery 31 is supported by the first, higher ribs 13, while the height between the second, lower ribs 14 and the first, higher ribs 13 accommodates the protruding flow channels provided in the cooling plate 2.

In this embodiment, the heat insulation buffer foam 5 is distributed in the space formed by the first reinforcing rib 13 and the second reinforcing rib 14, and the height of the heat insulation buffer foam 5 is higher than that of the first reinforcing rib 13. The arrangement is such that the thermal insulation and cushioning foam 5 is in a compressed state and can act as thermal insulation and cushioning between the cold plate 2 and the box 1.

Further, a BMU (Battery management Unit) assembly 6 is further disposed on the side of the box body 1 where the liquid inlet joint 11 is disposed, and a detachable protective casing 7 is further disposed outside the BMU assembly 6. Optionally, in this embodiment, a mounting hole 15 is formed in a side wall of the box body 1, the BMU module 6 is mounted in the mounting hole 15, the protective shell 7 is covered on the mounting hole 15 to seal the BMU module 6, the protective shell 7 is set to be in a detachable mode, and when maintenance is required, the protective shell 7 only needs to be detached.

The utility model provides a liquid cooling battery subrack, through setting up cooling plate 2, set up in the cooling plate 2 can with the subchannel 21 of every battery one-to-one, setting up of subchannel 21 can cool off every battery 31 better, improves battery subrack battery system's temperature equalization performance even, prolongs battery subrack battery system's life even.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (9)

1. A liquid-cooled battery subrack, comprising: the battery pack comprises a box body, a cooling plate and a battery module;

the cooling plate is arranged at the bottom of the box body, the battery module is accommodated in the box body, and the battery module is positioned on the cooling plate;

the battery module includes the battery that a plurality of array set up, the inside runner that is provided with of cooling plate, the runner includes a plurality of subchannel, a plurality of the subchannel with every of battery module the battery one-to-one.

2. The liquid-cooled battery box of claim 1, wherein a plurality of said sub-channels are sequentially connected end to form a cooling circuit, said cooling plate having a side surface provided with an inlet and an outlet, said inlet and said outlet being respectively connected to two ports of said cooling circuit.

3. The liquid-cooled battery receptacle of claim 2, wherein the bypass channel near the liquid outlet is more densely bypassed than the bypass channel near the liquid inlet.

4. The liquid-cooled battery box of claim 3, wherein a thermally conductive pad is sandwiched between the cooling plate and the battery module.

5. The liquid-cooled battery box of claim 4, wherein the cooling plate and the bottom of the box are provided with thermally insulating buffer foam.

6. The liquid-cooled battery box of claim 5, wherein the bottom of the box body is provided with a first stiffener and a second stiffener, the first stiffener extends in the same direction as the length of the battery, the second stiffener extends in the same direction as the width of the battery, and the first stiffener is higher than the second stiffener.

7. The liquid-cooled battery subrack of claim 6, wherein the thermal insulation buffer foam is distributed in the space formed by the first reinforcing rib and the second reinforcing rib, and the height of the thermal insulation buffer foam is higher than that of the first reinforcing rib.

8. The liquid-cooled battery receptacle of claim 7, wherein a liquid inlet connector and a liquid outlet connector are provided on a side of the housing, the liquid inlet connector being in communication with the liquid inlet and the liquid outlet connector being in communication with the liquid outlet.

9. The liquid-cooled battery receptacle of claim 8, wherein a BMU assembly is further disposed on a side of the housing where the inlet connector is disposed, and a removable protective housing is further disposed on an exterior side of the BMU assembly.

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