CN217740647U - Liquid cooling plate, battery module and power battery pack - Google Patents
Liquid cooling plate, battery module and power battery pack Download PDFInfo
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- CN217740647U CN217740647U CN202221172355.5U CN202221172355U CN217740647U CN 217740647 U CN217740647 U CN 217740647U CN 202221172355 U CN202221172355 U CN 202221172355U CN 217740647 U CN217740647 U CN 217740647U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a liquid cooling board, battery module and power battery package. The utility model discloses a liquid cooling plate includes the body, and the body is provided with water inlet, delivery port and cooling chamber, and water inlet and delivery port all communicate in the cooling chamber, and the cooling chamber is provided with first passageway and a plurality of second passageway, and the one end of a plurality of second passageways all communicates in the water inlet, and the other end of a plurality of second passageways communicates in first passageway, and first passageway communicates in the delivery port, and first passageway sets up in the middle part of body, and the sectional area sum of a plurality of second passageways is greater than the sectional area of first passageway. The velocity of flow that the coolant liquid flowed through first passageway is greater than the velocity of flow that liquid flowed through the second passageway, can make the cooling effect at liquid cooling plate middle part promote. The battery module includes above-mentioned liquid cooling board, can optimize the temperature uniformity nature of battery module middle part and both sides. The power battery pack comprises the battery modules, the temperature uniformity of each battery core in each battery module in the power battery pack is good, and the service life of the power battery pack can be guaranteed.
Description
Technical Field
The utility model relates to a power battery technical field, especially a liquid cooling board, battery module and power battery package.
Background
In the correlation technique, according to the heat radiation characteristic of electric core, the temperature of the high electric core both sides of temperature of electric core middle part, after a plurality of electric cores constitute the battery module, the heat of battery module middle part is more difficult to the transmission, leads to battery module middle part temperature to be higher than both sides temperature. The conventional cooling means is that the coolant liquid in the liquid cooling board flows to the other end by battery package one end, and electric core though can be cooled off, the samming effect is relatively poor, leads to the difference in temperature of battery module middle part and both sides higher.
SUMMERY OF THE UTILITY MODEL
Utility model aims at solving at least one of the technical problem that exists among the prior art. Therefore, the utility model provides a liquid cooling board can optimize the samming effect.
The utility model discloses still provide a battery module of having above-mentioned liquid cold drawing.
The utility model discloses still provide a power battery package that has above-mentioned liquid cooling board.
According to the embodiment of the first aspect of the present invention, the liquid cooling plate includes a body, the body has a cooling chamber therein, and is provided with a water inlet and a water outlet, wherein the cooling chamber includes a first channel and a plurality of second channels, one end of each of the plurality of second channels is connected to the water inlet, the other end of each of the plurality of second channels is connected to the first channel, and the first channel is connected to the water outlet; the first channel is arranged in the middle of the body, the second channels are arranged on two sides of the first channel respectively, and the sum of the sectional areas of the second channels is larger than that of the first channel.
According to the utility model discloses liquid cooling plate has following beneficial effect at least: the first passageway sets up in the middle part of cooling chamber and links to each other with a plurality of second passageways, because it is a plurality of the sectional area sum of second passageway is greater than the sectional area of first passageway, the velocity of flow when the coolant liquid flows through first passageway is greater than the velocity of flow when the coolant liquid flows through the second passageway, can make the cooling effect at liquid cooling plate middle part promote to optimize the temperature uniformity of battery module middle part and both sides.
According to some embodiments of the invention, the cooling chamber is provided with two of the second channels, each the sectional area of the second channel equals the sectional area of the first channel.
According to some embodiments of the invention, the second channel is symmetrically arranged with respect to the first channel.
According to some embodiments of the utility model, the cooling chamber still includes the intake antrum, the intake antrum intercommunication water inlet and each the second passageway, the intake antrum can be to each the second passageway pours into the coolant liquid into.
According to some embodiments of the present invention, the cooling chamber further comprises a water outlet chamber, the water outlet chamber comprises a first accommodating portion and a second accommodating portion, the first accommodating portion is communicated with the first channel, the second accommodating portion is communicated with the water outlet and the first accommodating portion, and the sectional area of the second accommodating portion is larger than the sectional area of the first channel.
According to some embodiments of the invention, the first receiving portion has a gradually increasing cross-sectional area in a direction from the first channel to the second receiving portion.
According to the utility model discloses a some embodiments, the body has length and width of settlement, first passageway is followed the length direction of body extends, the second passageway includes a plurality of extension and bending segment, the extension is followed the length direction of body extends, and is a plurality of the extension is followed the width direction of body sets up side by side, the bending segment is connected in two between the extension, with each the extension end to end.
According to some embodiments of the invention, the body has a set length and width, the second channel is followed the width direction's of body size is greater than the second channel is followed the thickness direction's of body size.
According to the utility model discloses a battery module of second aspect embodiment, include: the liquid cooling plate comprises a battery cell group, a connecting piece and a liquid cooling plate, wherein the battery cell group comprises a plurality of battery cells which are arranged along a set direction; the connecting piece is used for supporting a plurality of battery cells from the end part and/or the side part of the battery cell group; the liquid cooling plate is arranged at the bottom of the battery cell group and is attached to the bottoms of the battery cells.
According to the utility model discloses battery module has following beneficial effect at least: the liquid cooling board acts on the bottom of electric core, because the cooling effect at liquid cooling board middle part promotes, can effectively reduce the temperature of battery module middle part, makes the holistic temperature uniformity of battery module good, and the safety in utilization can obtain promoting.
According to the utility model discloses a power battery package of third aspect embodiment includes: the liquid cooling plate comprises a battery box, a plurality of battery modules and a plurality of liquid cooling plates, wherein the battery box is provided with an installation cavity; the battery module comprises a plurality of battery cores, the battery cores are arranged along a set direction, and the battery module is accommodated in the installation cavity; each liquid cooling plate corresponds to each battery module one to one, and each liquid cooling plate sets up in the bottom of each battery module to with the laminating of the bottom of electricity core.
According to the utility model discloses power battery package has following beneficial effect at least: the power battery package includes battery module and above-mentioned liquid cold plate, and the liquid cold plate can effectively reduce the temperature of the battery module middle part that corresponds to make the middle part and the both sides temperature uniformity of each battery module good in the power battery package, guarantee the life of each battery module, the life of power battery package also can obtain guaranteeing.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention will be further described with reference to the following drawings and examples, in which:
fig. 1 is a schematic view of a liquid cooling plate according to an embodiment of the present invention;
fig. 2 is a schematic view of a flow passage of a liquid cooling plate according to an embodiment of the present invention;
FIG. 3 is an enlarged view of FIG. 2"A";
FIG. 4 is an enlarged view at 2"B ″.
Reference numerals:
the water inlet structure comprises a body 100, a first cover plate 110, a convex part 111, a second cover plate 120, a water inlet 121 and a water outlet 122;
a cooling chamber 200, a water outlet chamber 210, a first accommodating part 211, a second accommodating part 212, a water inlet chamber 220 and a first channel 230;
a second channel 240, a bending section 241 and an extending section 242.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Referring to fig. 1 to 2, a first aspect of the present invention provides a liquid cooling plate, which includes a body 100. The body 100 has a cooling chamber 200 therein and is provided with a water inlet 121 and a water outlet 122. The cooling cavity 200 includes a first channel 230 and a plurality of second channels 240, one end of each of the plurality of second channels 240 is communicated with the water inlet 121, the other end of each of the plurality of second channels 240 is communicated with the first channel 230, the first channel 230 is communicated with the water outlet 122, the first channel 230 is disposed in the middle of the body 100, the second channels 240 are disposed on two sides of the first channel 230, and the sum of the cross-sectional areas of the plurality of second channels 240 is greater than the cross-sectional area of the first channel 230 (all the cross-sectional areas in the present application are the area of the cross-section formed by intercepting the corresponding main body from a plane perpendicular to the flow direction of the cooling liquid).
When the liquid cooling plate is used, for example, in a battery module, the cooling liquid enters the cooling chamber 200 through the water inlet 121 and is collected to the first channel 230 through the second channels 240. According to the heat production distribution characteristic when battery module operating condition, the heat at battery module middle part is more difficult to the transmission, leads to along battery module width direction on, and the temperature of battery module both sides is less than the temperature of battery module middle part. Since the sum of the sectional areas of the plurality of second passages 240 is greater than the sectional area of the first passage 230 and the first passage 230 is disposed in the middle of the body 100, the flow rate of the cooling liquid in the first passage 230 is greater than the flow rate of the cooling liquid in the second passage 240, the cooling liquid can sufficiently absorb heat in the middle of the battery module, and the purpose of reducing the temperature difference between the middle temperature and the temperatures on both sides of the battery module is achieved.
The cooling liquid is a liquid having a large specific heat capacity, and is not limited to the liquid that can be used only for cooling. For example, under cold conditions, can let in the higher coolant liquid of temperature to the liquid cooling plate, the coolant liquid flows into cooling chamber 200 by the water inlet after, flows into second passageway 240 earlier and makes battery module both sides heat up, flows into first passageway 230 again, and the velocity of flow of coolant liquid is very fast in first passageway 230, makes the heat exchange in the middle part of the battery module abundant to reach the purpose of balanced difference in temperature, guarantee the normal work of battery module. To battery module cooling with to battery module heating the same reason, the coolant liquid flows into cooling chamber 200 back by the water inlet, flows into second passageway 240 earlier and makes battery module both sides cooling, and the velocity of flow of coolant liquid is very fast in the second passageway 230 of flowing into again to reach the purpose of balanced difference in temperature, guarantee battery module's normal work.
In some embodiments, the body 100 includes a first cover plate 110 and a second cover plate 120, the first cover plate is formed with a plurality of protrusions 111 by a stamping process, and the first cover plate 110 and the second cover plate 120 fit together to define the cooling cavity 200. Each boss 111 and boss 111 defines with the cover plate wall a first channel 230 and a plurality of second channels 240. The first cover plate 110 and the second cover plate 120 are convenient to manufacture, and the cost of the liquid cooling plate can be reduced.
Referring to fig. 1 to 2, preferably, the cooling chamber 200 is provided with two second channels 240, the cross-sectional area of the second channel 240 is equal to the cross-sectional area of the first channel 230, the two second channels 240 meet at the middle of the liquid-cooled plate and are communicated with the first channel 230, the cooling liquid is collected at the joint of the second channel 240 and the first channel 230, so that the pressure at the joint is increased, when the cooling liquid flows into the first channel 230 from the two second channels 240, the flow rate of the cooling liquid in the first channel 230 is twice that of the cooling liquid in the second channel 240, so that the heat at the middle of the battery module can be sufficiently absorbed, and the temperature difference between the middle and the two sides of the battery module is reduced.
Referring to fig. 1 to 2, in some embodiments, the second channels 240 are symmetrically disposed with respect to the first channel 230, and after the cooling liquid enters the cooling cavity 200 from the water inlet 121 and fills the channels, the distribution of the cooling liquid is also symmetrical with respect to the first channel 230, so that the cooling effect of the battery module is symmetrical, and the temperature uniformity of the middle and both sides of the battery module is improved.
Referring to fig. 1, 2 and 4, in some embodiments, the cooling chamber 200 is further provided with an inlet chamber 220, and the inlet chamber 220 communicates the inlet 121 and the plurality of second passages 240, so that the inlet chamber 220 can simultaneously inject the cooling fluid into the plurality of second passages 240, thereby uniformly injecting the cooling fluid into each of the second passages 240. That is, after the cooling liquid enters the water inlet cavity 220 from the water inlet 121, the flow rate of the cooling liquid flowing into each second channel 240 is the same, so that the cooling effect of each second channel 240 can be the same.
Referring to fig. 1 to 3, in some embodiments, the cooling chamber 200 is further provided with a water outlet chamber 210, the water outlet chamber 210 includes a first accommodating portion 211 and a second accommodating portion 212, the first accommodating portion 211 communicates with the first passage 230, the second accommodating portion 212 communicates with the water outlet and the first accommodating portion 211, a cross-sectional area of the second accommodating portion 212 is larger than a cross-sectional area of the first passage 230, so that the cooling liquid can be rapidly discharged from the water outlet 122 to the second accommodating portion 212, and the second accommodating portion 212 with the larger cross-sectional area can be used to connect a drain pipe with a larger diameter, which facilitates rapid discharge of the cooling liquid in the first passage 230, thereby effectively improving cooling efficiency.
Referring to fig. 1 to 3, in some embodiments, the cross-sectional area of the first accommodating portion 211 gradually increases from the first channel 230 to the second accommodating portion 212, and the first accommodating portion 211 is an opening similar to a "trumpet shape", so that the flow resistance can be effectively reduced, and the flow rate loss can be avoided. The flow velocity loss of the coolant flowing from the first passage 230 into the first accommodating portion 211 is small, and the coolant can be quickly discharged from the cooling chamber 200, thereby further increasing the cooling effect on the first passage 230.
Referring to fig. 1-2, in some embodiments, the body 100 has a set length and width, and the first channel 230 extends along the length of the body 100. The second channel 240 includes a plurality of extending sections 242 and bending sections 241, the extending sections 242 extend along the length direction of the body 100, the extending sections 242 are arranged in parallel along the width direction of the body 100, and the bending sections 241 are connected between the extending sections 242 to connect the extending ends 242 end to end. Under the limited prerequisite of body 100 and battery module area of contact, the similar to "S type" setting of second passageway 240 can increase the length that flows of coolant liquid in second passageway 240, makes the effective area of action of liquid cold plate increase to it is abundant to make the battery module cooling, guarantees the cooling effect of liquid cold plate to battery module.
Referring to fig. 1 to 2, in some embodiments, a dimension of the second channel 240 in a width direction of the body 100 is greater than a dimension of the second channel 240 in a thickness direction of the body 100. Because the liquid cooling plate length design is longer, the temperature rises gradually after the coolant liquid in the liquid cooling plate runner heat absorption, leads to the cooling effect of back half section coolant liquid not good, and the front and back section difference in temperature is big. The liquid cooling plate adopts the design of the wide straight flow channel, the area of a cooling area in the liquid cooling plate is increased, and meanwhile, the number of the bent sections 241 of the second channel 240 can be reduced. The coolant liquid can flow through each passageway fast, has reduced the coolant liquid and has flowed through the regional time of whole liquid cooling to reduce the influence of electric core heating to the coolant liquid, made the coolant liquid can keep good heat transfer effect all the time.
The embodiment of the second aspect of the present invention provides a battery module (not shown in the drawings), which comprises a connecting member, a battery cell group and the liquid cooling plate provided by the embodiment of the first aspect. The battery pack comprises a plurality of battery cells, and the battery cells are arranged along a set direction. The connecting piece is used for supporting from the tip and/or the lateral part of electric core group and holds a plurality of electric cores, and the connecting piece includes end plate and curb plate, and the curb plate sets up in the lateral part of electric core group for support from the lateral part and hold a plurality of electric cores, the end plate set up in the tip of electric core group is used for supporting from the tip and holds a plurality of electric cores, makes each electric core in the electric core group laminate each other and fix together, and the state when guaranteeing the battery module and using is stable. Liquid cooling board and the laminating of the bottom of electric core group mutually, beat the heat conduction structure on the liquid cooling board and glue and bond in the bottom of electric core group, because the first passageway 230 of liquid cooling board sets up in liquid cooling board middle part, the velocity of flow of coolant liquid in first passageway 230 is very fast, makes the cooling effect at liquid cooling board middle part promote, makes the holistic temperature uniformity of battery module good, and the safety in utilization can obtain promoting.
The utility model discloses third aspect embodiment provides a power battery package (not shown on the picture), including the liquid cooling board that battery box, a plurality of battery module and a plurality of first aspect embodiment provided, each liquid cooling board and each battery module one-to-one, liquid cooling board laminating in the bottom of battery module. The battery module is assembled in the battery box. Under the effect of the liquid cooling plate that corresponds, the middle part and the both sides temperature uniformity of each battery module in the power battery package are good, make the security and the life of each battery module promote, and the security performance and the life of power battery package also can obtain corresponding promotion.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. Liquid cooling board, its characterized in that, including the body, the body is inside to have the cooling chamber to be provided with water inlet and delivery port, wherein:
the cooling cavity comprises a first channel and a plurality of second channels, one ends of the second channels are communicated with the water inlet, the other ends of the second channels are communicated with the first channel, and the first channel is communicated with the water outlet;
the first channel is arranged in the middle of the body, the second channels are arranged on two sides of the first channel respectively, and the sum of the sectional areas of the second channels is larger than that of the first channel.
2. The liquid cold plate of claim 1, wherein said cooling chamber is provided with two of said second passages, each of said second passages having a cross-sectional area equal to a cross-sectional area of said first passage.
3. The liquid cold plate of claim 1, wherein said second passages are symmetrically disposed about said first passages.
4. The liquid cooled plate of claim 1, wherein the cooling chamber further comprises an inlet chamber communicating the inlet port with each of the second passages, the inlet chamber being capable of injecting a cooling liquid into each of the second passages.
5. The liquid cooling plate of claim 1, wherein the cooling chamber further comprises a water outlet chamber, the water outlet chamber comprising a first accommodating portion and a second accommodating portion, the first accommodating portion being in communication with the first passage, the second accommodating portion being in communication with the water outlet and the first accommodating portion, and a cross-sectional area of the second accommodating portion being larger than a cross-sectional area of the first passage.
6. The liquid cooling panel of claim 5, wherein the first receiving portion has a gradually increasing cross-sectional area from the first passage toward the second receiving portion.
7. The liquid cold plate of claim 2, wherein said body has a predetermined length and width, said first channel extends along a length of said body, said second channel comprises a plurality of extensions and bends, said extensions extend along a length of said body, said plurality of extensions are juxtaposed along a width of said body, and said bends are connected between two of said extensions to connect said extensions end to end.
8. The liquid cooled plate of claim 2, wherein the body has a set width and thickness, and wherein the dimension of the second channel in the width direction of the body is greater than the dimension of the second channel in the thickness direction of the body.
9. Battery module, its characterized in that includes:
the battery core group comprises a plurality of battery cores, and the battery cores are arranged along a set direction;
the connecting piece is used for supporting the plurality of electric cores from the end part and/or the side part of the electric core group;
the liquid cooling plate of any one of claims 1 to 8, wherein the liquid cooling plate is disposed at the bottom of the set of electric cells and attached to the bottom of each of the electric cells.
10. Power battery package, its characterized in that includes:
a battery box having a mounting cavity;
the battery module comprises a plurality of battery cores, the plurality of battery cores are arranged along a set direction, and the battery module is accommodated in the installation cavity;
the liquid cooling plate of any one of claims 1 to 8, wherein each liquid cooling plate corresponds to each battery module in a one-to-one manner, and the liquid cooling plate is arranged at the bottom of each battery module and attached to the bottom of each battery cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221172355.5U CN217740647U (en) | 2022-05-16 | 2022-05-16 | Liquid cooling plate, battery module and power battery pack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221172355.5U CN217740647U (en) | 2022-05-16 | 2022-05-16 | Liquid cooling plate, battery module and power battery pack |
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| CN217740647U true CN217740647U (en) | 2022-11-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116345011A (en) * | 2023-05-31 | 2023-06-27 | 天津力神电池股份有限公司 | Battery module and battery pack |
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2022
- 2022-05-16 CN CN202221172355.5U patent/CN217740647U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116345011A (en) * | 2023-05-31 | 2023-06-27 | 天津力神电池股份有限公司 | Battery module and battery pack |
| CN116345011B (en) * | 2023-05-31 | 2023-08-11 | 天津力神电池股份有限公司 | Battery module and battery pack |
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