CN216958233U - Heating element and battery package - Google Patents
Heating element and battery package Download PDFInfo
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- CN216958233U CN216958233U CN202220508634.8U CN202220508634U CN216958233U CN 216958233 U CN216958233 U CN 216958233U CN 202220508634 U CN202220508634 U CN 202220508634U CN 216958233 U CN216958233 U CN 216958233U
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- heating
- conductor
- heating element
- heat
- battery pack
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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
Abstract
The embodiment of the utility model provides a heating assembly and a battery pack, and relates to the technical field of batteries. The heating assembly and the battery pack comprise an air pipe and a heater, wherein the heater comprises a heating element, a conductor and a radiator; the radiator is sleeved on the conductor, and the heating element is connected with the conductor and used for transferring heat to the conductor; the heating element, the conductor and the radiator are all arranged in the air pipe, and the conductor and/or the heating element are connected with the inner wall of the air pipe; the air pipe is provided with a plurality of heat dissipation holes, the conductor transfers heat to the radiator under the condition that the heating member generates heat and dissipates heat outwards through the heat dissipation holes, and the preheating problem of the low-temperature starting battery pack can be solved.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a heating assembly and a battery pack.
Background
The battery cells of the new energy automobile battery pack are arranged in an array mode, and the design mode from the battery cells to the battery pack is gradually shown in the visual field of people.
However, the thermal management design of the integrated array battery cell is always a bottleneck of the battery pack design, and especially the preheating problem of the low-temperature starting battery pack needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
Objects of the present invention include, for example, providing a heating assembly that addresses the warm-up problem of a cold-start battery pack.
The utility model also aims to provide a battery pack, which can solve the preheating problem of a low-temperature starting battery pack.
Embodiments of the utility model may be implemented as follows:
the embodiment of the utility model provides a battery pack, which comprises an air pipe and a heater, wherein the heater comprises a heating element, a conductor and a radiator;
the radiator is sleeved on the conductor, and the heating element is connected with the conductor and used for transferring heat to the conductor;
the heating element, the conductor and the radiator are all arranged in the air pipe, and the conductor and/or the heating element are/is connected with the inner wall of the air pipe;
the air pipe is provided with a plurality of radiating holes, and the conductor transfers heat to the radiator and radiates the heat outwards through the radiating holes under the condition that the heating element generates the heat.
Optionally, the heating element includes a heating sheet, a first insulating layer and a shell, the heating sheet is wrapped by the first insulating layer, the first insulating layer is wrapped by the shell, and the heating sheet is connected with the conductor through a wire.
Optionally, the heating plate is a PTC ceramic plate.
Optionally, the conductor and/or the heating element is bonded or bolted to the air duct.
Optionally, a second insulating layer is disposed on the inner side wall of the air duct.
Optionally, the heat dissipation holes are formed in two opposite side walls of the air pipe, and the heat dissipation holes are formed at uniform intervals.
The embodiment of the utility model also provides a battery pack which comprises a box body, a plurality of rows of battery cores and a plurality of the heating assemblies, wherein the heating assemblies and the battery cores are arranged in the box body.
Optionally, a plurality of heating assemblies are arranged in the box body at intervals;
the single-row battery cells are arranged between the adjacent heating assemblies or between the heating assemblies and the inner side wall of the box body;
the heat dissipation holes correspond to the positions of the battery cores.
Optionally, the inside of box is provided with a plurality of water-cooling boards, and is a plurality of water-cooling board and multiseriate electricity core one-to-one, the water-cooling board sets up in one of correspondence the bottom of electricity core for make the electricity core cooling.
Optionally, the water cooling plates are communicated with each other, a water inlet and a water outlet are formed in each water cooling plate, and a circulating pipeline is connected between each water inlet and the corresponding water outlet.
The beneficial effects of the heating assembly and the battery pack of the embodiment of the utility model include, for example: when the battery package is preheated, the air pipe is arranged in the battery package, so that the heating element generates heat, the heat is transferred to the radiator through the conductor and is radiated outwards through the radiating holes of the air pipe, the inside of the battery package is preheated, and the preheating problem of the low-temperature starting battery package is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a battery pack in an embodiment of the present application;
FIG. 2 is a schematic structural diagram for showing the layout of the heating assembly in the box in the embodiment of the present application;
FIG. 3 is a schematic structural diagram of a heater according to an embodiment of the present application;
fig. 4 is a schematic structural view of a heating element in the embodiment of the present application.
Icon: 10-a battery pack; 100-a box body; 200-electric core; 300-a heating assembly; 310-air pipe; 311-heat dissipation holes; 320-a heater; 321-a heating element; 3211-heating sheet; 3212-a first insulating layer; 3213-outer shell; 322-a conductor; 323-a heat sink; 400-water cooling plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, it is only for convenience of describing the present invention and simplifying the description, but it is not necessary to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, it should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The inventor of the application finds that the battery pack cannot reach the normal working temperature immediately when the vehicle is started in winter or at a low temperature, the service life of the battery pack can be influenced under the condition that the temperature is lower than the normal working temperature, and the battery pack even cannot discharge if the ambient temperature is too low; the present embodiment provides a battery pack to solve the above technical problems.
Referring to fig. 1 to fig. 3, the present embodiment provides a battery pack 10, which includes a case 100, a plurality of rows of battery cells 200, and a plurality of heating assemblies 300, where the heating assemblies 300 and the battery cells 200 are disposed in the case 100.
In this embodiment, the box body 100 is formed by stamping a metal plate; a plurality of heating assemblies 300 are arranged in the box body 100 at intervals; the single-row battery cells 200 are disposed between two adjacent heating assemblies 300 or between the heating assemblies 300 and the inner side wall of the box 100, and the heating assemblies 300 are used for radiating heat outwards.
Through setting up a plurality of heating element 300 between adjacent two electric core 200, a plurality of heating element 300 are outside the calorific capacity that looses at the different positions of battery package 10 to make the inside thermally equivalent of battery package 10, the temperature of electric core 200 promotes gradually, until reaching normal operating temperature, thereby accomplished preheating of battery package 10 under the low temperature situation, this process can promote the life-span of battery package 10.
Further, the heating assembly 300 includes an air duct 310 and a heater 320, the heater 320 including a heating member 321, a conductor 322, and a heat sink 323; the heat radiator 323 is sleeved on the conductor 322, and the heating element 321 is connected with the conductor 322 and used for transferring heat to the conductor 322; the heating element 321, the conductor 322 and the radiator 323 are all arranged in the air pipe 310, and the conductor 322 and/or the heating element 321 are/is connected with the inner wall of the air pipe 310; the air duct 310 is provided with a plurality of heat dissipation holes 311, and the conductor 322 transfers heat to the heat sink 323 and dissipates heat through the heat dissipation holes 311 when the heating member 321 generates heat.
It should be noted that the air duct 310 is disposed between two adjacent columns of the battery cells 200 and fixed on the inner bottom wall of the box 100; the heating member 321 and the power source are connected by a wire, and the heating member 321 and the conductor 322 are also connected by a wire; the connection mode of the heater 320 and the air pipe 310 at least includes the following modes: the conductor 322 is connected to the inner wall of the air conduit 310, or the heating member 321 is connected to the inner wall of the air conduit 310, or both the conductor 322 and the heating member 321 are connected to the inner wall of the air conduit 310. In addition, the conductor 322 or the heating element 321 may be bonded or bolted to the air duct 310.
The heating plate 3211 is connected to a power supply through a wire, the power supply is turned on, the heating plate 3211 heats, the heat is transferred to the conductor 322 through the wire, the conductor 322 transfers the heat to the heat sink 323 and radiates the heat through the heat radiation holes 311 of the air duct 310, and the heat is radiated to the plurality of rows of battery cells 200 through the heat radiation holes 311, so that the battery cells 200 are preheated.
Further, referring to fig. 4, the heating element 321 includes a heating plate 3211, a first insulating layer 3212 and a casing 3213, the heating plate 3211 is wrapped by the first insulating layer 3212, the casing 3213 wraps the first insulating layer 3212, the heating plate 3211 is connected to the conductor 322 through a wire, and the first insulating layer 3212 can perform a certain degree of insulating protection.
In one embodiment, the heating plate 3211 is a PTC ceramic plate.
The PTC ceramic is also referred to as "PTC ceramic". A ceramic with very small resistance at normal temperature but suddenly increased thousands to millions of times with the temperature rising to a certain temperature (transition temperature), and then recovered again after the temperature falling. PTC is an abbreviation for positive temperature coefficient center. The PTC ceramic is one kind of electronic ceramic and is prepared by doping high-purity barium titanate with oxides of niobium, bismuth, antimony, lead, manganese, silicon and the like and sintering at 1300-1350 ℃. The properties vary with room temperature resistivity, temperature transition, temperature coefficient of resistance, and highest resistivity. The device is widely used for starting overcurrent protection (non-destructive fuse) of the motor, fire alarm, temperature measurement, constant temperature heating element, demagnetization of color TV and the like.
In addition, a second insulating layer (not shown) is disposed on the inner sidewall of the air duct 310.
It should be noted that the first insulating layer 3212 and the second insulating layer may be made of PET, which is also called polyethylene terephthalate, and has excellent physical and mechanical properties in a wide temperature range, a long-term use temperature of 120 ℃, excellent electrical insulation properties, and even at high temperature and high frequency, the electrical properties are still good.
In this embodiment, a high temperature adhesive is coated on one surface of the conductor 322 and/or the heating element 321, and is adhered to one side of the inner wall of the air duct 310 through the high temperature adhesive, and the second insulating layer is disposed on the other portion of the inner wall of the air duct 310.
Further, a plurality of heat dissipation holes 311 are formed in two opposite sidewalls of the air duct 310, and the plurality of heat dissipation holes 311 are uniformly spaced.
In this embodiment, each battery cell 200 includes a plurality of battery cells 200, the number of the battery cells in a single battery cell 200 is equal to the number of the heat dissipation holes 311 formed in the sidewall of one side of the air duct 310, and the heat dissipation holes 311 formed in the sidewall of one side of the air duct 310 are opposite to the positions of the neighboring battery cells 200.
In the process of generating heat by the heating plate 3211, heat is uniformly dissipated from the plurality of heat dissipating holes 311, so that the plurality of battery cells 200 in the battery pack 10 can be uniformly heated.
In addition, a blower is arranged in the box body 100, and in the process of heating the heating sheet 3211, the hot air in the box body 100 continuously flows through the radiator 323 under the action of the blower, so as to heat the internal environment of the battery pack 10, greatly improve the low-temperature starting efficiency of the battery pack 10, and prolong the service life of the battery pack 10.
The battery cell 200 of the embodiment is provided with a positive pole and a negative pole, and a liquid injection hole is designed between the positive pole and the negative pole and is located on the top surface of the battery cell 200 to prevent the leakage of electrolyte. The two side faces of the battery cell 200 are respectively provided with an explosion-proof valve, when the energy inside the battery cell 200 is abnormally gathered and the pressure reaches critical explosion, the explosion-proof valve can quickly release pressure and ventilate, in the worst case, the explosion of a certain single battery cell 200 reaches a critical explosion point (0.4MPa) due to reasons such as battery overcharge, the explosion-proof valve can be opened towards the two sides of the battery pack 10, and the risk that the upper cover plate of the box body 100 is burnt due to thermal runaway of the single battery cell 200, so that the passenger compartment is endangered is greatly reduced.
In addition, a plurality of water cooling plates 400 are arranged inside the box body 100, the plurality of water cooling plates 400 correspond to the plurality of columns of battery cells 200 one to one, and the water cooling plates 400 are arranged at the bottoms of the corresponding columns of battery cells 200 and used for cooling the battery cells 200.
In this embodiment, the water-cooling plate 400 is disposed on the inner bottom wall of the box 100, the water-cooling plate 400 is fixedly connected to the box 100 through screws, and the bottoms of the multiple rows of battery cells 200 are fixed to the surface of the water-cooling plate 400 through heat-conducting glue. The water cooling plates 400 are communicated with each other, a water inlet and a water outlet are formed in each water cooling plate 400, a circulating pipeline (not shown in the figure) is connected between each water inlet and each water outlet, and a circulating pump is arranged on each circulating pipeline.
When the temperature of the battery cell 200 is high, the water cooling circulation in the water cooling plate 400 is promoted through the circulating pump, and then the water cooling plate 400 cools the battery cell 200, so that the risk of thermal runaway is reduced.
In addition, the box 100 is provided with electrical components such as BMS, BCU, BDU, high-low voltage connectors, fuses, explosion-proof valves and sealing rubber mats, and the BMS is used for monitoring the temperature change in the battery pack 10.
In summary, the embodiment of the present invention provides a heating assembly and a battery pack 10, when the temperature of the battery cell 200 is low, the heating sheet is controlled to heat, the heat is dissipated to a plurality of rows of battery cells 200 through the heat sink 323, and the heat is more uniformly distributed along with the function of the blower, so as to preheat the battery cell 200, improve the low temperature start efficiency of the battery pack 10, and prolong the service life of the battery pack 10; and when electric core 200 temperature was higher, control circulating pump work ordered about the circulation flow of cooling fluid in the water-cooling board 400 to lower the temperature to electric core 200, avoid taking place the condition of thermal runaway.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A heating assembly comprising an air duct and a heater, said heater comprising a heating element, a conductor and a heat sink;
the radiator is sleeved on the conductor, and the heating element is connected with the conductor and used for transferring heat to the conductor;
the heating element, the conductor and the radiator are all arranged in the air pipe, and the conductor and/or the heating element are/is connected with the inner wall of the air pipe;
the air pipe is provided with a plurality of radiating holes, and the conductor transfers heat to the radiator and radiates the heat outwards through the radiating holes under the condition that the heating element generates the heat.
2. The heating assembly of claim 1, wherein the heating element comprises a heating sheet, a first insulating layer, and a housing, the first insulating layer surrounds the heating sheet, the housing surrounds the first insulating layer, and the heating sheet and the conductor are connected by a wire.
3. The heating assembly of claim 2, wherein the heater chip is a PTC ceramic chip.
4. The heating assembly of claim 1, wherein the conductor and/or the heating element are bonded or bolted to the air duct.
5. The heating assembly of claim 1, wherein a second insulating layer is disposed on an inner sidewall of the air duct.
6. The heating assembly of claim 1, wherein the plurality of heat dissipation holes are formed in two opposite sidewalls of the air duct, and the plurality of heat dissipation holes are uniformly spaced apart.
7. A battery pack, comprising a case, a plurality of columns of cells, and a plurality of heating assemblies according to any one of claims 1 to 6, wherein the heating assemblies and the cells are disposed in the case.
8. The battery pack of claim 7, wherein a plurality of the heating assemblies are spaced apart within the case;
the single-row battery cells are arranged between the adjacent heating assemblies or between the heating assemblies and the inner side wall of the box body;
the heat dissipation holes correspond to the positions of the battery cores.
9. The battery pack according to claim 7, wherein a plurality of water-cooling plates are arranged inside the box body, the plurality of water-cooling plates correspond to the plurality of columns of the battery cells one to one, and the water-cooling plates are arranged at the bottoms of the corresponding columns of the battery cells and used for cooling the battery cells.
10. The battery pack according to claim 9, wherein the plurality of water-cooling plates are connected to each other, and a water inlet and a water outlet are provided on each water-cooling plate, and a circulation pipeline is connected between the water inlet and the water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220508634.8U CN216958233U (en) | 2022-03-10 | 2022-03-10 | Heating element and battery package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220508634.8U CN216958233U (en) | 2022-03-10 | 2022-03-10 | Heating element and battery package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216958233U true CN216958233U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220508634.8U Active CN216958233U (en) | 2022-03-10 | 2022-03-10 | Heating element and battery package |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216958233U (en) |
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2022
- 2022-03-10 CN CN202220508634.8U patent/CN216958233U/en active Active
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