CN115764066A - Cylindrical battery liquid cooling module - Google Patents
Cylindrical battery liquid cooling module Download PDFInfo
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- CN115764066A CN115764066A CN202211492542.6A CN202211492542A CN115764066A CN 115764066 A CN115764066 A CN 115764066A CN 202211492542 A CN202211492542 A CN 202211492542A CN 115764066 A CN115764066 A CN 115764066A
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Abstract
The invention provides a cylindrical battery liquid cooling module, which comprises a battery module, wherein the battery module comprises a plurality of rows of electric core groups which are arranged in a stacked manner, each row of electric core group comprises a plurality of cylindrical electric cores, and the battery module also comprises a liquid cooling sleeve connected with the cylindrical electric cores; the liquid cooling sleeve is provided with an installation cavity with an opening at one end, and the cylindrical battery cell is arranged in the installation cavity; the liquid cooling sleeve is internally provided with a liquid cooling cavity for the heat exchange medium to flow, the liquid cooling cavity surrounds the mounting cavity, two side surfaces of the liquid cooling sleeve along the radial direction of the mounting cavity are respectively provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are respectively communicated with the liquid cooling cavity; two adjacent liquid cooling sleeves on the electric core group are mutually connected through a liquid inlet and a liquid outlet. According to the invention, through the arrangement of the liquid cooling sleeve, the outer surface of the cylindrical battery cell can be comprehensively contacted, so that the cylindrical battery cell is efficiently radiated; the liquid cooling chambers on the liquid cooling sleeves on the battery cell group are connected in series in order, and all cylindrical battery cells in the whole battery module can be efficiently cooled.
Description
Technical Field
The invention relates to the technical field of cylindrical batteries, in particular to a liquid cooling module of a cylindrical battery.
Background
For the heat dissipation scheme of the cylindrical battery cell, a common form is generally that heat conduction is performed in a bottom cold plate tiled mode or a coiled pipe wound mode and the like. The tiled cold drawing structure exchanges heat through contacting with the bottom end of the battery core, the temperature difference between the battery monomers is large, and the effect is poor. Utilize snakelike liquid cooling pipe winding to carry out the heat conduction in the battery module, need let snakelike liquid cooling pipe paste the side that cylindrical electric core was hugged closely again to heat conduction silica gel, and alternate in the clearance between each electric core side, this kind of radiating mode can not guarantee snakelike liquid cooling pipe and cylindrical electric core's outer peripheral face and all contact, and snakelike liquid cooling pipe is limited with the area of contact of every cylindrical electric core, leads to the radiating effect unsatisfactory.
Chinese patent No. CN106711547A discloses a heat management device and power supply device, which discloses the adoption of dual heat dissipation guarantee to perform heat dissipation management on a single battery, one is to absorb heat dissipated by the single battery in a power battery module through a liquid cooling flat tube, the other is to transmit at least a part of residual heat not absorbed by the liquid cooling flat tube to the liquid cooling flat tube through a heat conduction sleeve sleeved on the single battery, and finally, the heat is taken out of the power battery module together by cooling liquid, thereby improving the heat dissipation efficiency of a cylindrical battery.
Although the radiating efficiency of cylinder battery can be improved to a certain extent to above-mentioned patent, but the flat pipe of liquid cooling still twines in the battery module, it comes to carry out the heat transfer with cylinder electricity core through the heat conduction sleeve indirectly, the flat pipe of liquid cooling still exists and cylinder battery area of contact is limited, although the regional heat that the flat pipe of cylinder electricity core and liquid cooling contacted can in time be taken away, but the heat that does not produce with the flat regional heat of cylinder electricity core that contacts of liquid cooling is in through the heat conduction sleeve to the flat pipe transmission in-process of liquid cooling, there is heat conduction slowly, can't in time take away cylinder battery week side heat, still can lead to the poor problem of cylinder battery module radiating effect. In addition, above-mentioned scheme overlaps on cylindrical battery core and establishes heat conduction sleeve and cooperate the flat pipe of liquid cooling again, can lead to having more radiating part to be connected with cylindrical battery core in the whole battery module, reduces the space utilization of battery module to reduce cylindrical battery's energy density.
Disclosure of Invention
In view of this, the invention provides a cylindrical battery liquid cooling module to solve the problem that the existing serpentine liquid cooling pipe heat dissipation mode has a limited contact area with each cylindrical battery cell, which results in an unsatisfactory heat dissipation effect.
The technical scheme of the invention is realized as follows:
the invention provides a cylindrical battery liquid cooling module which comprises a battery module, wherein the battery module comprises a plurality of rows of electric core groups which are arranged in a stacked mode, each row of electric core group comprises a plurality of cylindrical electric cores, and the battery module further comprises a liquid cooling sleeve connected with the cylindrical electric cores; wherein the content of the first and second substances,
the liquid cooling sleeve is provided with an installation cavity with an opening at one end, and the cylindrical battery cell is arranged in the installation cavity;
the liquid cooling sleeve is internally provided with a liquid cooling cavity for heat exchange medium to flow, the liquid cooling cavity surrounds the installation cavity, two side surfaces of the liquid cooling sleeve along the radial direction of the installation cavity are respectively provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are respectively communicated with the liquid cooling cavity;
two adjacent liquid cooling sleeves on the electric core group are mutually connected through the liquid inlet and the liquid outlet.
On the basis of the technical scheme, preferably, the cylindrical battery cells on the two adjacent rows of the battery cell groups are arranged in a staggered manner.
Further, preferably, the liquid cooling jacket has two first connecting portions and two second connecting portions which are arranged oppositely, the liquid inlet and the liquid outlet are respectively arranged on the two first connecting portions, the liquid cooling jackets on the electric core groups are connected through the first connecting portions, and the liquid cooling jackets between the adjacent two rows of electric core groups are connected through the second connecting portions.
On the basis of the technical scheme, preferably, the second connecting portion comprise a protruding portion and a recessed portion which are matched with each other, the protruding portion is located in the center of the side wall of the liquid cooling jacket, the two recessed portions are symmetrically arranged and located on two sides of the protruding portion respectively, one end of each recessed portion is in arc transition connection with the protruding portion, and the other end of each recessed portion is connected with the first connecting portion.
On the basis of the technical scheme, the first connecting portion are vertical side faces, the liquid inlet is arranged along the axis direction of the installation cavity, at least one first connecting portion is arranged on the liquid inlet, a sealing element is arranged on the liquid inlet, and a sealing groove connected with the sealing element is formed in the liquid outlet.
On the basis of the technical scheme, the battery module further comprises a liquid inlet assembly and a liquid outlet assembly, wherein the liquid inlet assembly is positioned at one end of the battery module and is connected in parallel with a liquid inlet on the liquid cooling sleeve at the starting end of each row of the battery pack; the liquid outlet assembly is positioned at the other end of the battery module and is connected in parallel with the liquid outlet on the liquid cooling sleeve at the tail end of each row of the electric core groups.
Further, preferably, the liquid inlet assembly comprises a liquid inlet plate, a plurality of liquid separating plates and a liquid inlet header pipe, the liquid inlet plate is horizontally located at one end of the battery module, the liquid separating plates are fixedly arranged at equal intervals along the length direction of the liquid inlet plate, a first space for inserting the liquid supply cold sleeve is formed between every two adjacent liquid separating plates, first interfaces connected with liquid inlets on the liquid cooling sleeve are arranged on the liquid inlet plates corresponding to the liquid separating plates and the first spaces, liquid inlet cavities communicated with each other are arranged in the liquid inlet plates and the liquid separating plates, the liquid inlet cavities are communicated with the first interfaces, and the liquid inlet header pipe is fixedly arranged on the liquid inlet plates and communicated with the liquid inlet cavities;
go out the liquid assembly and include liquid outlet plate, cylinder manifold and play liquid house steward, it is located the battery module other end to go out the liquid plate level, the cylinder manifold is along the equidistant fixed a plurality of that set up of liquid inlet plate length direction, is formed with between two adjacent cylinder manifolds and supplies liquid cold jacket male second space, all be provided with the second interface that is connected with the liquid outlet on the liquid cold jacket on the liquid outlet plate that cylinder manifold and second space correspond, be provided with the play liquid cavity of mutual intercommunication in liquid outlet plate and the cylinder manifold, it is linked together with the second interface to go out the liquid cavity, it sets up on liquid outlet plate and is linked together with a liquid cavity to go out the liquid house steward fixedly.
On the basis of the technical scheme, the battery cooling jacket is preferred to further comprise a first fixing plate and a second fixing plate, the first fixing plate is horizontally located on the top surface of the battery module, the second fixing plate is horizontally located on the bottom surface of the battery module, the first fixing plate is provided with a mounting hole for the pole of the cylindrical battery core to extend out, the top end and the bottom end of the liquid cooling jacket are provided with first positioning holes, and the first fixing plate and the second fixing plate are provided with second positioning holes connected with the first positioning holes.
On the basis of the technical scheme, preferably, an explosion-proof valve is arranged at one end, away from the pole, of the cylindrical battery cell, a through hole corresponding to the explosion-proof valve is formed in the bottom surface of the liquid cooling jacket, and a pressure relief hole corresponding to the through hole is formed in the second fixing plate.
Further, preferably, the battery pack further comprises a lower box body, the battery module is arranged in the lower box body, and a pressure relief channel corresponding to the pressure relief hole is formed in the ground in the lower box body.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the cylindrical battery liquid cooling module disclosed by the invention, the liquid cooling sleeve is sleeved on each cylindrical battery cell in the battery module, the liquid cooling chamber is arranged in the liquid cooling sleeve and surrounds the periphery of the cylindrical battery cell, and a heat exchange medium flowing in the liquid cooling chamber can be fully contacted with the outer surface of the cylindrical battery cell, so that the cylindrical battery cell is efficiently cooled; meanwhile, all the cylindrical electric cores on the electric core group are mutually connected through the liquid cooling sleeves, the liquid cooling sleeves are mutually connected through the liquid inlet and the liquid outlet, and the liquid cooling chambers on the plurality of liquid cooling sleeves on the electric core group are sequentially connected in series, so that all the cylindrical electric cores in the whole battery module can be efficiently cooled;
(2) The cylindrical battery cells on the two adjacent rows of battery cell groups are arranged in a staggered manner, so that gaps among the cylindrical battery cells can be reduced, the space utilization rate of the cylindrical battery cells is improved, and the energy density of the battery module is further improved;
(3) The convex parts and the concave parts which are matched with each other are arranged through the second connecting parts, so that the liquid cooling sleeves between two adjacent rows of electric core groups are attached to each other through the second connecting parts, on one hand, the space utilization rate of the battery module is increased, on the other hand, heat exchange is performed between the adjacent liquid cooling sleeves through seamless connection between the liquid cooling sleeves, and the liquid cooling effect of the battery module can be further increased;
(4) Through the liquid inlet assembly and the liquid outlet assembly, on one hand, heat exchange media can be respectively provided for the multiple rows of the electric core groups, and on the other hand, two ends of the battery module can be positioned;
(5) The top end and the bottom end of the liquid cooling sleeve are provided with the first positioning holes, and the first fixing plate and the second fixing plate are provided with the second positioning holes connected with the first positioning holes, so that all cylindrical battery cores can be fixed in groups in the horizontal direction, the cylindrical battery cores and the cylindrical battery cores are integrally bound and fastened, and the integral structural strength of the battery module is improved;
(6) Through seting up explosion-proof valve in cylinder electricity core bottom surface to set up the perforating hole in liquid cooling cover bottom surface, seted up the pressure release hole corresponding with the perforating hole on the second fixed plate, pressure release passageway corresponding with the pressure release hole is seted up to lower box internal ground, can be when cylinder electricity core thermal runaway takes place, releases thermal runaway energy through the pressure release passageway on the lower box, avoids causing the damage to the electrical component of cylinder electricity core top surface.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic plan view of a battery module according to the present disclosure;
fig. 2 is a schematic view of an assembly structure of a cylindrical battery cell and a liquid cooling jacket disclosed by the invention;
FIG. 3 is a schematic front perspective view of the liquid cooling jacket disclosed in the present invention;
FIG. 4 is a plan cross-sectional view of the disclosed liquid cooled jacket;
FIG. 5 is an enlarged view of a portion A of FIG. 1;
FIG. 6 is an exploded view of a cylindrical battery liquid cooling module according to the present disclosure;
FIG. 7 is an enlarged view of a portion of FIG. 6 at B;
FIG. 8 is a schematic bottom perspective view of the liquid cooling jacket disclosed in the present invention;
FIG. 9 is a schematic perspective view of a liquid inlet assembly according to the present disclosure;
FIG. 10 is a schematic perspective view of a liquid outlet assembly disclosed in the present invention;
fig. 11 is a schematic perspective view of a liquid cooling module for a cylindrical battery according to the present invention;
reference numerals:
1. a battery module; 10. the electric core group; 110. a cylindrical cell; 2. liquid cooling jacket; 21. a mounting cavity; 22. a liquid cooling chamber; 23. a liquid inlet; 24. a liquid outlet; 25. a first connection portion; 26. a second connecting portion; 261. a boss portion; 262. a recessed portion; 231. a seal member; 241. a sealing groove; 3. a liquid inlet assembly; 4. a liquid outlet assembly; 31. a liquid inlet plate; 32. a liquid separation plate; 33. a liquid inlet header pipe; 300. a first space; 301. a first interface; 41. a liquid outlet plate; 42. a bus bar; 43. a liquid inlet header pipe; 400. a second space; 401. a second interface; 5. a first fixing plate; 6. a second fixing plate; 51. mounting holes; 27. a first positioning hole; s, a second positioning hole; 1101. an explosion-proof valve; 28. a through hole; 61. a pressure relief vent; 7. a lower box body.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, with reference to fig. 2 to 4, an embodiment of the present invention discloses a cylindrical battery liquid cooling module, which includes a battery module 1, where the battery module 1 includes a plurality of rows of stacked electric core groups 10, each row of electric core group 10 includes a plurality of cylindrical electric cores 110, and in this embodiment, the cylindrical electric cores 110 in the battery module 1 are vertically arranged.
Among the prior art, in order to realize dispelling the heat to the cylinder electricity core 110 that battery module 1 gathered, adopt snakelike liquid cold tube to paste heat conduction silica gel and hug closely the side of cylinder electricity core 110 again more, and alternate in the clearance between each cylinder electricity core 110 side, snakelike liquid cold tube and the equal contact of outer peripheral face of cylinder electricity core 110 can not be guaranteed to this kind of radiating mode, snakelike liquid cold tube is limited with every cylinder electricity core 110's area of contact, it is unsatisfactory to lead to the radiating effect.
In order to solve the above problem, the present embodiment adopts the following technical solutions.
Specifically, the battery module 1 of this embodiment further includes a liquid cooling jacket 2 connected to the cylindrical battery cell 110.
In this embodiment, referring to fig. 3 and 4, the liquid cooling jacket 2 has a mounting cavity 21 with an opening at one end, the inner diameter of the mounting cavity 21 is matched with the diameter of the cylindrical battery cell 110, and the cylindrical battery cell 110 is inserted into the mounting cavity 21, so that the outer peripheral surface of the cylindrical battery cell 110 is in contact with the inner peripheral surface of the mounting cavity 21, and as some embodiments, the cylindrical battery cell 110 may be tightly fitted with the mounting cavity 21, or in clearance fit. The depth of the mounting cavity 21 is matched with the height of the cylindrical battery cell 110, so that the mounting cavity 21 can completely wrap the outer peripheral surface of the cylindrical battery cell 110.
In the present embodiment, the liquid cooling jacket 2 is made of a heat-dissipating metal material, preferably aluminum. The heat exchange medium is preferably water, a cooling liquid or other solution that can be cooled.
In order to realize that all cylindrical battery cells 110 in the battery module 1 can realize high-efficiency heat dissipation, the embodiment connects two adjacent liquid cooling jackets 2 on the battery cell group 10 to each other through the liquid inlet 23 and the liquid outlet 24. From this setting, each cylinder electric core 110 on the electric core group 10 passes through liquid cooling cover 2 interconnect, simultaneously through inlet 23 and liquid outlet 24 interconnect between the liquid cooling cover 2, on the one hand, guaranteed that a plurality of cylinder electric cores 110 on the electric core group 10 arrange along length direction in order, on the other hand, liquid cooling cavity 22 on a plurality of liquid cooling covers 2 on the electric core group 10 establishes ties in order to can realize that all cylinder electric cores 110 in whole battery module 1 all can obtain high-efficient heat dissipation.
As a preferred embodiment, referring to fig. 5, the cylindrical cells 110 in two adjacent rows of cell groups 10 are arranged in a staggered manner. From this setting, cylindrical electric core 110 adopts above-mentioned mode of arranging in battery module 1, can reduce the clearance between the cylindrical electric core 110, improves cylindrical electric core 110's space utilization, and then improves battery module 1's energy density.
In this embodiment, the liquid cooling jacket 2 has two first connecting portions 25 and two second connecting portions 26 which are oppositely arranged, it can be understood that the outer contour of the liquid cooling jacket 2 has four surfaces, one set of the opposite surfaces is defined as the first connecting portion 25, the other set of the opposite surfaces is defined as the second connecting portion 26, the liquid inlet 23 and the liquid outlet 24 are respectively arranged on the two first connecting portions 25, the liquid cooling jackets 2 on the electric core set 10 are connected through the first connecting portions 25, specifically, the first connecting portions 25 of the two adjacent liquid cooling jackets 2 on the electric core set 10 are mutually attached, so as to realize the connection between the liquid cooling jackets 2. The liquid cooling jackets 2 between two adjacent rows of electric core groups 10 are connected through a second connecting part 26. Specifically, the opposite second connecting portions 26 of the liquid cooling jacket 2 between two adjacent rows of electric core groups 10 are attached to each other. From this setting up, liquid cooling cover 2 on electric core group 10 is through first connecting portion 25 interconnect, can avoid depositing the clearance between the cylinder electricity core 110 on the electric core group 10, liquid cooling cover 2 on the adjacent electric core group 10 is through second connecting portion 26 interconnect, can avoid depositing the clearance between the cylinder electricity core 110 between the electric core group 10, on the one hand, 1 space utilization of battery module has been increased, on the other hand, through the seamless connection between the liquid cooling cover 2, make and carry out the heat exchange each other between the adjacent liquid cooling cover 2, can further increase the liquid cooling effect of battery module 1.
As some preferred embodiments, referring to fig. 2, the second connecting portion 26 includes a protruding portion 261 and two recessed portions 262 that are mutually matched, the protruding portion 261 is located in the center of the sidewall of the liquid cooling jacket 2, the two recessed portions 262 are symmetrically located on two sides of the protruding portion 261, respectively, one end of the recessed portion 262 is in arc transition connection with the protruding portion 261, and the other end of the recessed portion 262 is connected with the first connecting portion 25. In this embodiment, the protruding portion 261 is the semicircle arc, the depressed part 262 is the 1/4 circular arc, the radius of protruding portion 261 and depressed part 262 is the same, from this setting, liquid cooling jacket 2 on two adjacent rows of electric core groups 10 is when interconnect, wherein the protruding portion 261 of liquid cooling jacket 2 on one row of electric core group 10 can laminate completely with the depressed part 262 on two adjacent liquid cooling jackets 2 on one adjacent row of electric core group 10, make liquid cooling jacket 2 seamless connection between the multirow electric core group 10, when avoiding the clearance between the cylinder electricity core 110, can make and carry out heat-conduction each other between the liquid cooling jacket 2, thereby realize the heat complementary heat transfer, improve the liquid cooling effect in the battery module 1 greatly. In addition, be worth noting that above-mentioned structure setting for the cylinder electricity core is in the back of uniting, under the effect of liquid cooling cover 2, can keep vertical state, for traditional snakelike liquid cooling pipe, can avoid taking place the skew after uniting.
In addition, for among the prior art, paste heat-conducting adhesive and cylinder electricity core 110 side winding mode on through snakelike cooling tube, this embodiment is through parcel liquid cooling jacket 2 on each cylinder electricity core 110 to make all cylinder electricity cores 110 pass through liquid cooling jacket 2 interconnect, on the one hand, reduced the use of radiating part, on the other hand has improved battery module 1's radiating efficiency, the third aspect, no clearance between the cylinder electricity core 110, improve battery module 1's energy density greatly.
As some preferred embodiments, first connecting portion 25 is vertical side, make things convenient for on the electric core group 10 to connect between two adjacent liquid cooling jacket 2, inlet 23 sets up one at least on first connecting portion 25 along installation cavity 21 axis direction, in this embodiment, it sets up two inlets 23 to show the interval about first connecting portion 25, from this, can let in heat transfer medium simultaneously to liquid cooling cavity 22 upper segment and hypomere, guarantee that cylinder electric core 110 upper segment and hypomere can reach the heat transfer simultaneously and evenly, improve heat exchange efficiency.
The liquid inlet 23 is provided with a sealing member 231, and the liquid outlet 24 is provided with a sealing groove 241 connected with the sealing member 231. By adopting the above technical scheme, two adjacent liquid cooling jackets 2 on the electric core group 10 insert into the liquid outlet 24 through the liquid inlet 23 when connecting through first connecting portion 25 to cooperate through sealing member 231 and seal groove 241, guarantee that the liquid cooling chamber 22 between two adjacent liquid cooling jackets 2 avoids revealing when carrying out heat transfer medium and flowing.
In order to realize the introduction of the heat exchange medium into each liquid cooling jacket 2 in the battery module 1, the present embodiment further provides a liquid inlet assembly 3 and a liquid outlet assembly 4, as shown in fig. 6, the liquid inlet assembly 3 is located at one end of the battery module 1, and the liquid inlet assembly 3 is connected in parallel with the liquid inlet 23 on the liquid cooling jacket 2 at the starting end of each row of the electric core groups 10; the liquid outlet assembly 4 is positioned at the other end of the battery module 1, and the liquid outlet assembly 4 is connected in parallel with the liquid outlet 24 on the liquid cooling jacket 2 at the tail end of each row of electric core groups 10. From this setting, through the setting of feed liquor assembly 3 and play liquid assembly 4, can realize providing heat transfer medium respectively to multirow electric core group 10, guarantee the cylinder electricity core 110 heat dissipation homogeneous between multirow electric core group 10.
As some preferred embodiments, referring to fig. 9 and 10, the liquid inlet assembly 3 of this embodiment includes a liquid inlet plate 31, a plurality of liquid separating plates 32 and a liquid inlet header pipe 43, the liquid inlet plate 31 is horizontally located at one end of the battery module 1, the plurality of liquid separating plates 32 are fixedly arranged at equal intervals along the length direction of the liquid inlet plate 31, a first space 300 for inserting the liquid cooling jacket 2 is formed between two adjacent liquid separating plates 32, so as to set up, an end of a row of electric core sets 10 in the battery module 1 is inserted into the first space 300 and connected to the liquid inlet plate 31, an end of an adjacent electric core set 10 is connected to the liquid separating plate 32, first connectors 301 connected to liquid inlets 23 on the liquid cooling jacket 2 are respectively arranged on the liquid inlet plates 31 corresponding to the liquid separating plate 32 and the first space 300, liquid inlet cavities are respectively arranged in the liquid inlet plate 31 and the liquid separating plate 32, the liquid inlet cavities are communicated to the first connectors 301, and the liquid inlet header pipe 43 is fixedly arranged on the liquid inlet plate 31 and communicated to the liquid inlet cavities.
Adopt above-mentioned technical scheme, can be to letting in heat transfer medium in the feed liquor cavity of feed liquor board 31 through inlet manifold 43, heat transfer medium is connected with inlet 23 on the liquid cooling jacket 2 of the 10 initiating terminals of electric core group respectively through first interface 301, thereby let in heat transfer medium in the liquid cooling jacket 2 of each 10 initiating terminals of electric core group, heat transfer medium flows in order through liquid cooling cavity 22 on the liquid cooling jacket 2, thereby realize that all liquid cooling jackets 2 of electric core group 10 all fill heat transfer medium in order, thereby realize carrying out the heat transfer cooling to all cylinder electric cores 110 on the electric core group 10.
In order to circularly introduce a heat exchange medium, the liquid outlet assembly 4 comprises a liquid outlet plate 41, a plurality of bus plates 42 and a liquid outlet header pipe 43, the liquid outlet plate 41 is horizontally positioned at the other end of the battery module 1, the bus plates 42 are fixedly arranged at equal intervals along the length direction of the liquid inlet plate 31, a second space 400 for inserting the liquid cooling jacket 2 is formed between every two adjacent bus plates 42, and therefore, the tail end of one row of electric core groups 10 in the battery module 1 is inserted into the second space 400 and connected with the liquid outlet plate 41, and the tail end of the adjacent electric core group 10 is connected with the bus plates 42. The liquid outlet plates 41 corresponding to the liquid collecting plate 42 and the second space 400 are respectively provided with a second interface 401 connected with the liquid outlet 24 on the liquid cooling jacket 2, liquid outlet chambers communicated with each other are arranged in the liquid outlet plates 41 and the liquid collecting plate 42, the liquid outlet chambers are communicated with the second interfaces 401, and a liquid outlet header pipe is fixedly arranged on the liquid outlet plates 41 and is communicated with the liquid outlet chambers.
By adopting the technical scheme, the heat exchange medium in the liquid cooling jacket 2 on the electric core group 10 flows into the confluence plate 42 and the liquid outlet plate 41 through the second interface 401 and is discharged through the liquid outlet header pipe, so that the heat exchange medium circularly flows, and the battery module 1 is continuously cooled.
It is worth noting that, through dividing the liquid board 32 along 31 equidistant fixed the setting a plurality ofly of feed liquor board length direction, the cylinder manifold 42 is fixed along 31 equidistant of feed liquor board length direction and is set up a plurality ofly, can fix a position multirow electric core group 10 at width direction, avoids electric core group 10 to take place the displacement at width direction, guarantees that battery module 1 is at the horizontal direction stable in structure.
Although, the feed liquor assembly 3 and play liquid assembly 4 at battery module 1 both ends can carry out horizontal positioning to battery module 1 to a certain extent, the problem of horizontal migration still can take place for cylindrical electric core 110. Referring to fig. 6 and 7, for this reason, this embodiment has still set up first fixed plate 5 and second fixed plate 6, and first fixed plate 5 level is located battery module 1 top surface, second fixed plate 6 level is located battery module 1' S bottom surface, sets up the mounting hole 51 that supplies the utmost point post of cylinder electricity core 110 to stretch out on first fixed plate 5, and first locating hole 27 has all been seted up to 2 tops of liquid cooling jacket and bottom, has all seted up the second locating hole S that is connected with first locating hole 27 on first fixed plate 5 and the second fixed plate 6. From this setting up, at battery module 1 back in groups, with first fixed plate 5 and second fixed plate 6 level setting respectively at battery module 1 top and bottom, second locating hole S through on first fixed plate 5 and the second fixed plate 6 can carry out bolt locking with first locating hole 27 on the liquid cooling cover 2, perhaps connect through the locating pin, thereby realize fixing in groups all cylinder electricity cores 110 in the horizontal direction, make wholly bind the fastening between cylinder electricity core 110 and the cylinder electricity core 110, improve battery module 1' S overall structure intensity.
In this embodiment, the opening of the liquid cooling jacket 2 is upward, therefore, the cylindrical battery cell 110 is inserted into the liquid cooling jacket 2, the terminal of the cylindrical battery cell 110 is upward, after the battery module 1 is fixed in group, it is necessary to connect the terminal of the cylindrical battery cell 110 in series and parallel through the point connection assembly, because the cylindrical battery module 1 belongs to a high-density power battery, there may be a thermal runaway condition in the cylindrical battery during charging and discharging, in order to enable the cylindrical battery cell 110 to discharge thermal runaway in time, as shown in fig. 8, in this embodiment, the explosion-proof valve 1101 is disposed at one end of the cylindrical battery cell 110 far away from the terminal thereof, the bottom surface of the liquid cooling jacket 2 is provided with a through hole 28 corresponding to the explosion-proof valve 1101, and the second fixing plate 6 is provided with a pressure relief hole 61 corresponding to the through hole 28. With this arrangement, by disposing the explosion-proof valve 1101 on the bottom surface of the cylindrical battery, when thermal runaway occurs, the energy in the cylindrical battery cell 110 breaks through the explosion-proof valve 1101, and is discharged from the through hole 28 on the bottom surface of the liquid cooling jacket 2 and the pressure relief hole 61 on the second fixing plate 6, thereby avoiding damage to the point connection assembly on the top surface of the battery module 1.
In order to fix battery module 1 in groups, this embodiment has still set up lower box 7, refer to fig. 11 and show, battery module 1 set up in lower box 7, set up the pressure release passageway (not shown in the figure) corresponding with pressure release hole 61 in the box 7 ground down, when cylindrical electric core 110 thermal runaway takes place, release thermal runaway energy through the pressure release passageway on lower box 7, avoid causing the damage to the electrical component of cylindrical electric core 110 top surface.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a cylinder battery liquid cooling module, its includes battery module (1), battery module (1) includes the electric core group (10) of multirow range upon range of range arrangement, and every row of electric core group (10) includes several cylinder electricity core (110), its characterized in that: the battery module (1) further comprises a liquid cooling sleeve (2) connected with the cylindrical battery core (110); wherein, the first and the second end of the pipe are connected with each other,
the liquid cooling sleeve (2) is provided with an installation cavity (21) with an opening at one end, and the cylindrical battery cell (110) is arranged in the installation cavity (21);
a liquid cooling chamber (22) for a heat exchange medium to flow is arranged in the liquid cooling sleeve (2), the liquid cooling chamber (22) surrounds the mounting cavity (21), a liquid inlet (23) and a liquid outlet (24) are respectively formed in two side faces of the liquid cooling sleeve (2) along the radial direction of the mounting cavity (21), and the liquid inlet (23) and the liquid outlet (24) are respectively communicated with the liquid cooling chamber (22);
two adjacent liquid cooling sleeves (2) on the electric core group (10) are mutually connected through the liquid inlet (23) and the liquid outlet (24).
2. The cylindrical battery liquid cooling module of claim 1, wherein: the cylindrical battery cells (110) on the two adjacent rows of the battery cell groups (10) are arranged in a staggered mode.
3. The cylindrical battery liquid cooling module of claim 2, wherein: liquid cooling cover (2) have two first connecting portion (25) and two second connecting portion (26) of relative setting, inlet (23) and liquid outlet (24) set up respectively two on first connecting portion (25), on electric core group (10) be connected through first connecting portion (25) between liquid cooling cover (2), adjacent two rows between electric core group (10) liquid cooling cover (2) pass through second connecting portion (26) are connected.
4. The cylindrical battery liquid cooling module of claim 3, wherein: second connecting portion (26) are including bellying (261) and depressed part (262) of mutually supporting, bellying (261) are located liquid cooling cover (2) lateral wall center, depressed part (262) symmetry is provided with two, is located bellying (261) both sides respectively, and the one end and bellying (261) circular arc transitional coupling of depressed part (262), and the other end and the first connecting portion (25) of depressed part (262) are connected.
5. The cylindrical battery liquid cooling module of claim 3, wherein: first connecting portion (25) are vertical side, inlet (23) are followed installation cavity (21) axis direction is in set up one at least on first connecting portion (25), be provided with sealing member (231) on inlet (23), be provided with on liquid outlet (24) with seal groove (241) that sealing member (231) are connected.
6. The cylindrical battery liquid cooling module of claim 3, wherein: the battery module is characterized by further comprising a liquid inlet assembly (3) and a liquid outlet assembly (4), wherein the liquid inlet assembly (3) is located at one end of the battery module (1), and the liquid inlet assembly (3) is connected with a liquid inlet (23) on the liquid cooling sleeve (2) at the starting end of each row of the electric core groups (10) in parallel; the liquid outlet assembly (4) is positioned at the other end of the battery module (1), and the liquid outlet assembly (4) is connected with the liquid outlet (24) on the liquid cooling sleeve (2) at the tail end of each row of the electric core group (10) in parallel.
7. The cylindrical battery liquid cooling module of claim 6, wherein: the liquid inlet assembly (3) comprises a liquid inlet plate (31), a liquid separating plate (32) and a liquid inlet header pipe (43), wherein the liquid inlet plate (31) is horizontally located at one end of the battery module (1), the liquid separating plate (32) is fixedly arranged in a plurality of positions along the length direction of the liquid inlet plate (31) at equal intervals, a first space (300) for inserting the liquid cooling jacket (2) is formed between every two adjacent liquid separating plates (32), first interfaces (301) connected with liquid inlets (23) in the liquid cooling jacket (2) are arranged on the liquid inlet plates (31) corresponding to the liquid separating plates (32) and the first spaces (300), liquid inlet cavities communicated with each other are arranged in the liquid inlet plate (31) and the liquid separating plate (32), the liquid inlet cavities are communicated with the first interfaces (301), and the liquid inlet header pipe (43) is fixedly arranged on the liquid inlet plate (31) and communicated with the liquid inlet cavities;
go out liquid assembly (4) including going out liquid board (41), cylinder manifold (42) and go out liquid house steward (43), it is located battery module (1) other end to go out liquid board (41) level, cylinder manifold (42) are along feed liquor board (31) length direction equidistant fixed setting a plurality ofly, are formed with between two adjacent cylinder manifolds (42) to supply liquid cold jacket (2) male second space (400), all be provided with on liquid board (41) that correspond with second space (400) with liquid cold jacket (2) second interface (401) that are connected, it is provided with the play liquid cavity of mutual intercommunication in liquid board (41) and cylinder manifold (42), it is linked together with second interface (401) to go out the liquid cavity, it is linked together with a liquid cavity to go out liquid house steward (43) fixed setting on a liquid board (41).
8. The cylindrical battery liquid cooling module of claim 3, wherein: still include first fixed plate (5) and second fixed plate (6), first fixed plate (5) level is located battery module (1) top surface, second fixed plate (6) level is located the bottom surface of battery module (1), set up mounting hole (51) that supply the utmost point post of cylinder electricity core (110) to stretch out on first fixed plate (5), first locating hole (27) have all been seted up on liquid cooling cover (2) top and bottom, all set up second locating hole (S) that are connected with first locating hole (27) on first fixed plate (5) and second fixed plate (6).
9. The cylindrical battery liquid cooling module of claim 8, wherein: one end, far away from the pole, of the cylindrical battery core (110) is provided with an explosion-proof valve (1101), the bottom surface of the liquid cooling sleeve (2) is provided with a through hole (28) corresponding to the explosion-proof valve (1101), and the second fixing plate (6) is provided with a pressure relief hole (61) corresponding to the through hole (28).
10. The cylindrical battery liquid cooling module of claim 9, wherein: still include box (7) down, battery module (1) set up in box (7) down, the ground has seted up the pressure release passageway corresponding with pressure release hole (61) in box (7) down.
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| CN202211492542.6A CN115764066B (en) | 2022-11-25 | 2022-11-25 | Cylindrical battery liquid cooling module |
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Cited By (1)
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| CN116093523A (en) * | 2023-04-12 | 2023-05-09 | 盐城师范学院 | Modularized rapid splicing type lithium battery pack |
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| CN115764066B (en) | 2023-10-10 |
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