CN210467944U - Liquid cooling battery pack - Google Patents
Liquid cooling battery pack Download PDFInfo
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- CN210467944U CN210467944U CN201921822479.1U CN201921822479U CN210467944U CN 210467944 U CN210467944 U CN 210467944U CN 201921822479 U CN201921822479 U CN 201921822479U CN 210467944 U CN210467944 U CN 210467944U
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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 battery package, it includes case lid, wire harness support, square electricity core, box curb plate, high-pressure connector, battery box, liquid cooling board, module end, end plate insulation board, insulating heat conduction buffer chip. The utility model discloses error to electric core thickness direction and battery module need be once more with the fixed problem of battery box, provide an effectual fixed means. The fixing part of the battery module is combined with the battery box body by adopting the concept of modularity removal. Guarantee the inconsistent thickness dimension of structural design adaptation with style electric core because of production error leads to, battery module length dimension direction is compact simultaneously, does not have too much space extravagant. The production efficiency is improved, and the system cost is reduced. The utility model discloses a novel liquid cooling board as the radiator unit of heat pipe reason. Novel liquid cooling board guarantees that every electric core of battery package has two faces directly to carry out the heat exchange with the liquid cooling board. The heat exchange efficiency is improved, and the temperature consistency of the battery is improved.
Description
Technical Field
The utility model relates to a lithium cell accessory, concretely relates to liquid cooling battery package.
Background
With the rapid development of new energy industries in recent years, lithium batteries have great progress in both productivity and use cost. The battery pack is used as a basic unit for lithium battery application and mainly has the functions of realizing the technical requirements of battery cell fixation, high-voltage electric connection, low-voltage signal acquisition, BMU fixation, product frame matching, battery cell thermal management and the like.
The square battery is a common lithium battery and is widely applied to energy storage and electric automobiles. In practical application, a plurality of square battery cells form a battery module, and a plurality of battery modules form a battery pack. The design of the battery pack directly affects the overall performance of the lithium battery product.
Because square electric core thickness error, the accumulative total error is great in battery module length direction. If no reasonable assembly scheme is available, the length dimension of the battery module cannot be controlled. The situation that the battery box body cannot be installed can occur during assembly, and the design is invalid.
In addition, since the external ambient temperature has a large influence on the performance and life of the battery, a thermal management system is required to perform overall temperature control. The mainstream heat management scheme comprises three types of natural heat dissipation, air cooling and liquid cooling. Wherein the control effect of liquid cooling is better. However, the liquid cooling scheme is complex in design and high in manufacturing cost, and is generally only applied to high-end projects. And usually, only one surface of the battery cell can be subjected to thermal management, and when the ambient temperature is too high or too low, the temperature at each position inside the battery cell is inconsistent.
As shown in fig. 1, in the main technical solution at present, an injection molding part is respectively disposed on the upper side and the lower side of a battery cell, and two injection molding parts are locked by a screw rod to extrude the surface and the bottom surface of a tab of the battery cell, so that the battery cell is fixed. Other corresponding functional structures are made on the injection molding piece.
As shown in fig. 2, after the battery module is assembled, the battery module needs to be put into a battery box for assembly. The bottom of the battery box body is welded with a reinforcing rib, and the battery module is fixed on the reinforcing rib through a bolt.
The battery module has the problems that the difficulty of increasing the liquid cooling assembly is high, and an air cooling heat dissipation form is usually adopted. The dimension error of the battery cell is eliminated by increasing the width of the clamping groove of the plastic part, and the size of the clamping groove must be larger than that of the thickest battery cell to prevent the design failure. Such a design results in a large overall size of the module.
From the structural perspective, earlier with the fixed electric core of the working of plastics of module, it is too complicated to fix the design on the battery box with the module again. Affecting production efficiency while increasing system cost.
SUMMERY OF THE UTILITY MODEL
The utility model discloses at first error and battery module to electric core thickness direction need be once more with the fixed problem of battery box, provide an effectual fixed means. The fixing part of the battery module is combined with the battery box body by adopting the concept of modularity removal. Guarantee the electric core of all sizes of structural design adaptation, battery module length dimension direction is compact simultaneously, does not have too much space extravagant. The production efficiency is improved, and the system cost is reduced.
Secondly, the utility model discloses a novel liquid cooling board as the radiator unit of heat pipe reason. The novel liquid cooling plate can ensure that each electric core of the battery pack has two surfaces to directly exchange heat with the liquid cooling plate. The heat exchange efficiency is improved, and the temperature consistency of the battery is improved.
In order to achieve the above object, the present invention provides the following technical solutions:
a liquid-cooled battery pack, comprising:
the top and one side of the battery box body are both provided with openings;
the liquid cooling plate is fixed in the battery box body;
the plurality of square electric cores are positioned in the battery box body, arranged on the liquid cooling plate and isolated by the liquid cooling plate;
the module end plate is fixedly connected with one side, facing the opening of the side face of the battery box body, of the square battery cell;
the end plate insulating plate is arranged between the square battery cell and the module end plate;
the box body side plate is buckled and covered on the side opening of the battery box body;
the wire harness support is arranged on the top surface of the square battery cell;
and the box cover is buckled on the bottom opening of the battery box body.
Preferably, an insulating heat-conducting buffer sheet is arranged between the bottom of the square electric core and the liquid cooling plate.
Preferably, the module end plate is connected with the battery box body through threads.
Preferably, the battery box body is a box body adopting a sheet metal process, and sheet metal supports are welded on two sides of the inner wall of the battery box body.
Preferably, the battery box body is divided into a left accommodating groove and a right accommodating groove by the liquid cooling plate, and the two accommodating grooves are used for accommodating two lines of square electric cores.
Preferably, the liquid cooling plate is an aluminum liquid cooling plate.
Preferably, the liquid cooling plate is connected with the module end plate through threads.
Preferably, the liquid cooling plate is connected with the battery box body through threads.
Preferably, the liquid cooling plate is an integrated liquid cooling plate, and a water inlet and a water outlet are formed in the liquid cooling plate.
Preferably, at least one high voltage connector is provided on an outer surface of the battery case.
The utility model provides a liquid cooling battery package at first needs the problem fixed with the battery box once more to the error of electricity core thickness direction and battery module, provides an effectual fixed means. The problem of square electric core after in groups, thickness direction leads to the design inefficacy because of accumulative error is solved. The concept of modularity is adopted, the battery box body and the liquid cooling plate are used as limiting supports through the practical idea of modularity, and the fixing piece of the battery module is combined with the battery box body to eliminate errors through a fixing structure, so that the structure is invalid. The electric core of all sizes of structural design adaptation has been guaranteed, and battery module length dimension direction is compact simultaneously, does not have too much space extravagant. The production efficiency is improved, and the system cost is reduced.
Secondly, the utility model discloses a novel liquid cooling board as the radiator unit of heat pipe reason. The novel liquid cooling plate can ensure that each electric core of the battery pack has two surfaces to directly exchange heat with the liquid cooling plate. The heat exchange efficiency is improved, and the temperature consistency of the battery is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a structural diagram of a conventional square battery cell;
fig. 2 is an exploded view of a conventional battery pack;
fig. 3 is an exploded view of a liquid-cooled battery pack according to an embodiment of the present invention;
fig. 4 is a first perspective view of a battery box in a liquid-cooled battery pack according to an embodiment of the present invention;
fig. 5 is a second perspective view of a battery box in a liquid-cooled battery pack according to an embodiment of the present invention;
fig. 6 is a third perspective view of the battery box in the liquid-cooled battery pack provided by the embodiment of the present invention.
Description of reference numerals:
1. a box cover; 2. a wire harness support; 3. a square battery cell; 4. a box body side plate; 5. a high voltage connector; 6. A battery case; 7. a liquid-cooled plate; 8. a module end plate; 9. an end plate insulating plate; 10. insulating heat conduction buffer chip.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article, or terminal that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers; the terms "above", "below", "within" and the like are to be understood as including the number.
As shown in fig. 3 to 6, a liquid-cooled battery pack includes a case cover 1, a wire harness support 2, a square battery cell 3, a case side plate 4, a high-voltage connector 5, a battery case 6, a liquid-cooled plate 7, a module end 8, an end plate insulating plate 9, and an insulating and heat-conducting buffer sheet 10.
The top and one side of the battery box body 6 are both provided with openings, the liquid cooling plate 7 is fixed in the battery box body 6, and the plurality of square electric cores 3 are positioned in the battery box body 6, arranged on the liquid cooling plate 7 and isolated by the liquid cooling plate 7. Module end plate 8 with square electric core 3 orientation battery box 6 side open-ended one side fixed connection, end plate insulation board 9 sets up square electric core 3 with between the module end plate 8. The box body side plate 4 is buckled and covered on the side opening of the battery box body 6, the wire harness support 2 is arranged on the top surface of the square electric core 3, and the box cover 1 is buckled and covered on the bottom opening of the battery box body 6.
Square electric core 3 relies on liquid cooling board 7 and battery box 6 to carry out width direction's spacing to give 3 square electric core's 3 ascending pretightning force of thickness direction through module end plate 8 and battery box 6.
In an improved manner, an insulating heat-conducting buffer sheet 10 is arranged between the bottom of the square electric core 3 and the liquid cooling plate 7.
Preferably, the module end plate 8 is connected with the battery box body 6 through threads. The battery box body 6 is a box body adopting a sheet metal process, and sheet metal supports are welded on two sides of the inner wall of the battery box body 6.
As shown in fig. 5, the battery box 6 is separated into a left containing groove and a right containing groove by the liquid cooling plate 7, and the two containing grooves are used for containing two lines of square battery cells 3.
Preferably, the liquid cooling plate 7 is an aluminum liquid cooling plate. The liquid cooling plate 7 is connected with the module end plate 8 through threads. The liquid cooling plate 7 is connected with the battery box body 6 through threads. The liquid cooling plate 7 is an integrated liquid cooling plate, and a water inlet and a water outlet are formed in the liquid cooling plate 7.
In a further development, at least one high-voltage connector 5 is arranged on the outer surface of the battery housing 6.
Above-mentioned liquid cooling battery package adopts and removes the module design, and square electric core 3 leans on liquid cooling board 7 and battery box 6's relevant structure to carry out width direction spacing to through module end plate 8 and battery box 6 bolted connection, provide the ascending pretightning force of thickness side for square electric core 3, thereby reach the purpose of fixed square electric core 3. Liquid cooling plate 7 formula structure as an organic whole, integral type liquid cooling plate 7 arrange in the bottom and the centre of two square electric cores 3, when providing the heat dissipation for square electric core 3, has also played the function of spacing fixed electric core.
The battery box body 6 adopts a sheet metal process, and sheet metal supports are welded on two sides of the inner wall of the box body 6. The main functions of the welding metal plate support are as follows: the first is for square electric core 3 provides width direction's spacing support, and the second is the bolt that forms through weld nut for connecting module end plate 8 and battery box 6 provides locking structure. The welding panel beating support of both sides can be in the square electricity core 3 that finishes of arranging when designing. The reason for this is to prevent several electric cores from being combined together, and the thickness accumulated error makes the actual size shorter than the designed size. If the length is shorter than the designed size, the module end plate 8 interferes with the battery box 6 already when sufficient pre-tightening force is not applied to the battery cell in actual assembly.
The liquid cooling plate 7 is made of aluminum and is manufactured by processes of extruding aluminum, welding, machining and the like, and the liquid cooling plate is characterized in that only one water inlet and one water outlet are welded on the liquid cooling plate 7, and pipelines in the battery box body 6 are simple to connect. Adopt bolted connection between liquid cooling board 7 and the battery box 6, the bolt upwards wears out from the box 6 bottom, makes corresponding screw hole on the aluminium alloy and is used for fixing. As shown in fig. 4, in combination with the battery case 6. The battery box 6 is separated into two storage tanks on the left and right by the liquid cooling plate 7, and the two storage tanks are used for placing two square electric cores 3. The width direction size of each accommodating groove and the square battery cell is slightly larger by 2 to 3mm, the abundant size is filled by an insulating and heat conducting buffer sheet 10, and the insulating and heat conducting buffer sheet 10 is required to have a buffer function at the same time, as shown in fig. 5.
The liquid cooling plate 7 is connected with the module end plate 8 through bolts, and the connecting threaded holes are also obtained through machining and tapping. As shown in fig. 6, point a is a fixed point of the module end plate 8 to the battery case 6, and point b is a fixed point of the module end plate 8 to the liquid cooling plate 7. After the assembly is completed, the cooling liquid flows through the bottom surface and the side surface of the square battery cell 3 in the process of circulating and flowing in the liquid cooling plate 7.
After the module end plate 8 is assembled, the box cover 1, the wire harness support 2, the box side plate 4, the high-voltage connector 5 and other parts are fixed on the battery box body 6 in sequence. And finishing the battery pack assembly.
As shown in fig. 3, the battery pack is composed of 16 square battery cells, and is arranged in two parts. The liquid cooling plate 7 is assembled with the battery box 6, and then the surfaces of the liquid cooling plate 7 and the battery box 6, which are in contact with the square electric core 3, are covered with heat-conducting silica gel pads (a sheet material with insulating heat-conducting and buffering functions). The square battery cell 3 is placed on the heat-conducting silica gel pad, and then the module end plate 8 is used for applying pre-tightening force to the square battery cell 3 in the thickness direction to complete battery fixation. Six bolts are arranged on the module end plate 8 and are respectively connected with the battery box body and the liquid cooling plate 7.
The function of the wire harness support 2 includes the functions of positioning and connecting the conductive bar and fixing the collecting wire harness. The conducting bar on the wire harness support 2 can be welded with the lug of the square battery cell 3. And the welded conducting bar compresses and fixes the wire harness support 2.
The case side plates 4 are designed separately from the battery case in consideration of the mounting of the module end plates 8.
The battery box body can be manufactured by a sheet metal process or a cast aluminum box body or a thermoplastic plastic box body, and sheet metal welding supports on two sides in the box body 6 can be not welded, or can be integrally formed with the box body 6 or connected by bolts.
The module end plates 8 may or may not be of sheet metal. The module end plate 8 can be connected with the liquid cooling plate 7 through bolts or can be not connected with the liquid cooling plate 7. The square battery core is provided with pre-tightening force only through the fastening of the battery box body 6.
The liquid-cooled plate 7 may not employ a process of extruding an aluminum profile. It is also possible that the liquid-cooled plate 7 and the battery case 6 are not bolted but welded.
The case side plate 4 may be integral with the battery case 6 without the option of using a bolt connection.
Above-mentioned liquid cooling battery package at first to the error of electric core thickness direction and battery module need be fixed with the battery box once more, provides an effectual fixed means. The problem of square electric core after in groups, thickness direction leads to the design inefficacy because of accumulative error is solved. The concept of modularity is adopted, the battery box body and the liquid cooling plate are used as limiting supports through the practical idea of modularity, and the fixing piece of the battery module is combined with the battery box body to eliminate errors through a fixing structure, so that the structure is invalid. The electric core of all sizes of structural design adaptation has been guaranteed, and battery module length dimension direction is compact simultaneously, does not have too much space extravagant. The production efficiency is improved, and the system cost is reduced.
Secondly, the utility model discloses a novel liquid cooling board as the radiator unit of heat pipe reason. The novel liquid cooling plate can ensure that each electric core of the battery pack has two surfaces to directly exchange heat with the liquid cooling plate. The heat exchange efficiency is improved, and the temperature consistency of the battery is improved.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (10)
1. A liquid-cooled battery pack, comprising:
the top and one side of the battery box body are both provided with openings;
the liquid cooling plate is fixed in the battery box body;
the plurality of square electric cores are positioned in the battery box body, arranged on the liquid cooling plate and isolated by the liquid cooling plate;
the module end plate is fixedly connected with one side, facing the opening of the side face of the battery box body, of the square battery cell;
the end plate insulating plate is arranged between the square battery cell and the module end plate;
the box body side plate is buckled and covered on the side opening of the battery box body;
the wire harness support is arranged on the top surface of the square battery cell;
and the box cover is buckled on the bottom opening of the battery box body.
2. The liquid-cooled battery pack of claim 1, wherein an insulating, thermally conductive buffer sheet is disposed between the bottom of the square cells and the liquid-cooled plate.
3. The liquid-cooled battery pack of claim 1, wherein the module end plate is threadably engaged with the battery case.
4. The liquid-cooled battery pack of claim 1, wherein the battery case is a case made of sheet metal, and sheet metal brackets are welded to both sides of an inner wall of the battery case.
5. The liquid-cooled battery pack of claim 1, wherein the battery box is divided by the liquid-cooled plate into left and right pockets for receiving two columns of square cells.
6. The liquid-cooled battery pack of claim 1, wherein the liquid-cooled plate is an aluminum liquid-cooled plate.
7. The liquid-cooled battery pack of claim 1, wherein the liquid-cooled plate is threadably connected to the module end plate.
8. The liquid-cooled battery pack of claim 1, wherein the liquid-cooled plate is threadably connected to the battery case.
9. The liquid-cooled battery pack of claim 1, wherein the liquid-cooled plate is a unitary liquid-cooled plate having a water inlet and a water outlet.
10. The liquid-cooled battery pack of any of claims 1-9, wherein at least one high voltage connector is provided on an exterior surface of the battery case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921822479.1U CN210467944U (en) | 2019-10-28 | 2019-10-28 | Liquid cooling battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921822479.1U CN210467944U (en) | 2019-10-28 | 2019-10-28 | Liquid cooling battery pack |
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| CN210467944U true CN210467944U (en) | 2020-05-05 |
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| CN201921822479.1U Active CN210467944U (en) | 2019-10-28 | 2019-10-28 | Liquid cooling battery pack |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110611066A (en) * | 2019-10-28 | 2019-12-24 | 北京金茂绿建科技有限公司 | Liquid cooling battery pack |
| CN113471604A (en) * | 2021-06-29 | 2021-10-01 | 东风海博新能源科技有限公司 | Power battery pack |
| CN114069147A (en) * | 2020-07-30 | 2022-02-18 | 佛吉亚排气系统有限公司 | Battery and associated vehicle |
| WO2023098117A1 (en) * | 2021-11-30 | 2023-06-08 | 中国第一汽车股份有限公司 | Integrated battery assembly having two layers of modules, and electric vehicle and design method |
| CN116960529A (en) * | 2023-09-21 | 2023-10-27 | 厦门海辰储能科技股份有限公司 | Battery pack, energy storage system and electric equipment |
-
2019
- 2019-10-28 CN CN201921822479.1U patent/CN210467944U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110611066A (en) * | 2019-10-28 | 2019-12-24 | 北京金茂绿建科技有限公司 | Liquid cooling battery pack |
| CN114069147A (en) * | 2020-07-30 | 2022-02-18 | 佛吉亚排气系统有限公司 | Battery and associated vehicle |
| CN113471604A (en) * | 2021-06-29 | 2021-10-01 | 东风海博新能源科技有限公司 | Power battery pack |
| WO2023098117A1 (en) * | 2021-11-30 | 2023-06-08 | 中国第一汽车股份有限公司 | Integrated battery assembly having two layers of modules, and electric vehicle and design method |
| CN116960529A (en) * | 2023-09-21 | 2023-10-27 | 厦门海辰储能科技股份有限公司 | Battery pack, energy storage system and electric equipment |
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