CN216958205U - Battery box and electric vehicle - Google Patents
Battery box and electric vehicle Download PDFInfo
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- CN216958205U CN216958205U CN202123455100.8U CN202123455100U CN216958205U CN 216958205 U CN216958205 U CN 216958205U CN 202123455100 U CN202123455100 U CN 202123455100U CN 216958205 U CN216958205 U CN 216958205U
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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 invention relates to a battery box and an electric vehicle. The battery box comprises a box body; at least one layer of battery cell array is arranged in the box body, and each layer of battery cell array consists of a plurality of battery cells; two ends of each layer of the battery cell array are provided with temperature control parts which are connected with the aluminum bars at the end parts of the battery cells; the temperature control part is made of phase-change materials. On one hand, the temperature control part arranged in the battery box can absorb heat in the external environment when the external temperature is higher, so that the heat is prevented from being transmitted to the battery cell array and the aluminum bar, the temperature of the battery cell array and the aluminum bar is prevented from being increased due to the heat transmitted from the outside, the temperature of the battery cell array and the temperature of the aluminum bar can be better maintained, and the performance of the battery box is ensured; on the other hand, when the temperature of electric core array is higher, the temperature-control piece also can absorb the heat that electric core array produced, avoids the heat that electric core array produced to heat up fast because can't outwards give off effectively to can maintain electric core array's temperature better, guarantee the performance of battery box.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a battery box and an electric vehicle.
Background
The battery box is an important component of the electric vehicle, can generate heat in the working process, and can be divided into a liquid cooling type battery box and an air cooling type battery box according to different cooling modes. The liquid cooling battery box has good cooling effect, but has higher cost and complex pipeline structure, and is easy to leak liquid; the air-cooled battery box has a weaker cooling effect than a liquid-cooled battery box, but has a simple structure, high reliability and low cost. In practical applications, the air-cooled battery box is widely used under the combined influence of various factors.
In the conventional air-cooled battery box, under a high-temperature environment, the effect of dissipating heat from the battery cell in the battery box through air circulation is deteriorated, which is an inherent weakness of the air-cooled battery box. Due to this deficiency, the application of the air-cooled battery box is limited in regions with high air temperatures and in seasons with high air temperatures.
Therefore, there is a need for a novel air-cooled battery box that can be used in a high-temperature environment with good performance.
Disclosure of Invention
The invention provides a battery box and an electric vehicle, and aims to solve the technical problem that in the prior art, a wind cooling type battery box is poor in heat dissipation effect in regions or environments with high air temperature.
The invention provides a battery box, which comprises a box body; at least one layer of battery cell array is arranged in the box body, and each layer of battery cell array consists of a plurality of battery cells; temperature control parts are arranged at two ends of each layer of the battery cell array, and the temperature control parts are connected with the aluminum bars at the end parts of the battery cells; the temperature control part is made of a phase-change material.
The battery cell temperature control device comprises a box body, a temperature control device and a temperature control device, wherein two layers of battery cell arrays are arranged in the box body, and the number of the temperature control devices is four, namely a first temperature control device, a second temperature control device, a third temperature control device and a fourth temperature control device; the first temperature control part and the second temperature control part are arranged on two sides of one layer of the battery cell array, and the third temperature control part and the fourth temperature control part are arranged on two sides of the other layer of the battery cell array.
Wherein the phase change material is a composite PCM.
The phase change temperature of the temperature control is 35-39 ℃.
Air ducts are arranged among the plurality of electric cores of each layer of electric core array; the box body is provided with an air inlet and an air outlet; and a fan is arranged at the air inlet and/or the air outlet.
The battery cell is a cylindrical battery cell.
The air inlet and the air outlet are arranged on opposite sides of the box body, and the side surfaces where the air inlet and the air outlet are located face to the side direction of the battery cell.
Wherein the battery box further comprises a controller; the temperature control part detects the temperature of each aluminum row connected with the temperature control part, and the controller controls the fan to start when the difference value between the temperatures of the aluminum rows is higher than a set value.
The battery box also comprises a box cover, and the box cover covers the box body and is in contact with the temperature control piece; the box cover is provided with a plurality of radiating fins.
The invention provides an electric vehicle which comprises the battery box.
Compared with the prior art, the battery box and the electric vehicle provided by the embodiment of the invention have the following advantages:
according to the battery box provided by the embodiment of the invention, the temperature control part is arranged in the box body and is made of the phase-change material, and meanwhile, the temperature control part is connected with the aluminum bars at the end parts of the electric cores of the electric core array in the box body. The temperature control part arranged in the way can absorb heat in the external environment when the external temperature is higher, so that the heat is prevented from being transmitted to the cell array and the aluminum bar, the cell array is prevented from being heated due to the heat conducted from the outside, the temperature of the cell array and the aluminum bar can be better maintained, and the performance of the battery box is ensured; on the other hand, when the temperature of electric core array is higher, the temperature control piece also can absorb the heat that electric core array produced, avoids the heat that electric core array produced to heat up fast because unable outwards giving off effectively to can maintain electric core array's temperature better, guarantee battery box's performance.
The electric vehicle provided by the embodiment of the invention comprises the battery box, has the same beneficial effects as the battery box, and is not repeated herein.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
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, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is an exploded view of a battery case according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of the battery case shown in fig. 1 on a plane parallel to the longitudinal direction of the electric core;
fig. 3 is a schematic cross-sectional view of the battery case shown in fig. 1 on a plane perpendicular to the longitudinal direction of the battery cells.
In the figure:
10-a box body; 100-an air inlet; 101-a fan;
20-box cover;
30-electric core; 40-aluminum row; 50-temperature measuring 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. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Embodiments of a battery box and an electric vehicle according to the present invention will be described below with reference to the drawings.
(1) Examples of the Battery case
Referring to fig. 1 to 3, the battery box provided in the present embodiment includes a box body 10 and a box cover 20. At least one layer of battery cell array is arranged in the box body 10, and each layer of battery cell array is composed of a plurality of battery cells 30. In the case of the cell array, aluminum bars 40 are disposed at both ends of the cells 30, and each aluminum bar 40 connects a plurality of cells 30.
The box cover 20 is covered on the box body 10 and is contacted with the temperature control element 50; the case cover 20 is provided with a plurality of heat radiating fins for radiating heat to the outside.
The two ends of each layer of the battery cell array are provided with temperature control pieces 50, and the temperature control pieces 50 are connected with the aluminum bars 40 at the end parts of the battery cells; the temperature control 50 is made of a phase change material. In particular, the material from which the thermal plate 50 is made may be selected to be a composite PCM material. Specifically, the temperature control element 50 may be a plate, and the size of the plate substantially corresponds to each of the battery cells 30 included in the battery cell array, that is, it may be considered that a projection of each of the battery cells 30 included in the battery cell array on the surface where the temperature control element 50 is located in the temperature control element 50.
In the present embodiment, the temperature control element 50 made of the phase change material is disposed in the box body 10 of the battery box, and is connected to the aluminum rows 40 on both sides of the cell array. Because phase change material has the characteristic of absorbing and releasing heat, when ambient temperature is higher, the temperature control part 50 that adopts phase change material preparation can absorb the heat in the environment, avoids the heat conduction in the environment to electric core array and aluminium row 40, makes electric core array heat up fast because of the heat of external conduction, influences the performance of battery box. When the temperature of the battery cell array rises due to a large amount of heat generated by long-time work and other reasons, the heat generated by the battery cell array can be conducted to the temperature control element 50, so that the heat in the battery cell array is released, and the temperature of the battery cell array is prevented from continuously rising.
When the temperature difference between the cells in each area of the cell array is relatively large, the temperature control component 50 may also absorb heat from the relatively high-temperature cell 30 and release heat from the relatively low-temperature cell 30, so as to help maintain the temperature consistency between the cells 30 in each area of the cell array.
In the embodiment, the phase change point of the phase change material for preparing the temperature control element 50 is set to 35-39 ℃. Preferably, it is set to 35 degrees.
Referring to fig. 2, in the present embodiment, two layers of cell arrays are disposed in the case 10, and the number of the temperature control members 50 is four, and the temperature control members are a first temperature control member, a second temperature control member, a third temperature control member, and a fourth temperature control member; the first temperature control part and the second temperature control part are arranged on two sides of one layer of battery cell array, and the third temperature control part and the fourth temperature control part are arranged on two sides of the other layer of battery cell array.
In the present embodiment, the battery cell 30 is specifically a cylindrical battery cell. More preferably a cylindrical cell.
Referring to fig. 1 to 3, an air inlet 100 and an air outlet are disposed on the box body 10, and a gap is formed between the battery cells 30 in each layer of the battery cell array, so that an air duct can be formed between the air inlet 100 and the air outlet, each battery cell 30 in the battery cell array is located in the air duct, and the air flow in the air duct can flow to the position of each battery cell 30, so that the heat generated by the battery cells 30 can be taken away by the flow of the air flow in the air duct, and the heat dissipation effect on the battery cells 30 is achieved.
In this embodiment, a fan 101 is disposed at the air outlet, and the fan 101 is specifically an exhaust fan, and is capable of blowing air outwards, so as to generate negative pressure in the air duct in the box 10, so that the external air can enter the air duct in the box 10 from the air inlet 100, flow through the surfaces of the electric cores 30 of the electric core array in the air duct, take away heat generated by the electric cores 30, and be discharged outwards from the air outlet.
Besides the fan 101 arranged at the air outlet, the fan may be arranged at the air inlet 100, and the fan 101 arranged at the air inlet 100 is an air intake fan which blows air into the air inlet 100, so that the external air flow enters the air duct reaching the inside of the box body 10 from the air inlet 100, flows to the air outlet in the air duct, and is exhausted from the air outlet, and in the process, heat generated by the cells in the cell array is taken away. Of course, it is also possible to provide the fans 101 at both the air inlet 100 and the air outlet, wherein the fan 101 disposed at the air inlet 100 blows air into the air inlet 100, and the fan 101 disposed at the air outlet is a discharge fan blowing air outward, and both of them cooperate to generate an air flow passing through the air passage from the air inlet 100 and being discharged outward from the air outlet.
Specifically, the numerical values of the gaps provided between the cells 30 are different for different positions of the cell array; in the region where the cell array is likely to have a higher temperature, the gaps between the arranged cells 30 are larger, and in the region where the temperature in the cell array is not generally high, the gaps between the arranged cells 30 may be smaller, which is helpful for maintaining the temperature uniformity of the cells in each region of the cell array.
Referring to fig. 3, the intake port 100 and the exhaust port are disposed on opposite sides of the case 10, and the intake port 100 and the exhaust port are located on sides facing the lateral sides of the battery cells 30. The arrangement is favorable for the flow of the airflow in the box body 10, and the airflow can be more fully contacted with the battery cells 30 in the process of flowing in the air duct, and the airflow has a larger contact area with the battery cells 30 in the flowing process, so that the battery cells 30 can be better cooled.
In this embodiment, the battery box further includes a controller. The temperature control 50 detects the temperature of each aluminum row 40 connected thereto, and when the difference between the temperatures of the aluminum rows 40 is higher than a set value, the controller controls the fan 101 to start. Because the temperature control 50 is connected to the aluminum bars 40 connected to the end portions of the battery cells 30 in the battery cell array, the temperature control 50 may sense the temperature of each aluminum bar 40 and the temperature of different regions on the aluminum bars 40, thereby determining the temperature difference between different regions of each aluminum bar 40, and when the temperature difference between different regions on each aluminum bar 40 is higher than a set value, it indicates that there is a large temperature difference between the battery cells 30 in different regions in the battery cell array, at this time, the controller controls the fan 101 to start, and performs air cooling on each battery cell in the battery cell array, which may reduce the temperature of the battery cell 30 with a high temperature, and is helpful to maintain the consistency of the temperatures of the battery cells in the battery cell array.
In summary, in the battery box provided in this embodiment, the temperature control member 50 is disposed in the box body 10, the temperature control member 50 is made of a phase change material, and meanwhile, the temperature control member 50 is connected to the aluminum bars 40 at the end portions of the electric cells 30 of the electric cell array in the box body 10. The temperature control member 50 arranged in this way, on one hand, can absorb heat in the external environment when the external temperature is high, so as to prevent the heat from being transmitted to the battery cell array and the aluminum bar 40, and prevent the temperature of the battery cell array from rising due to the heat conducted from the outside, thereby better maintaining the temperature of the battery cell array and the aluminum bar 40 and ensuring the performance of the battery box; on the other hand, when the temperature of electric core array is higher, temperature control 50 also can absorb the heat that electric core array produced, avoids the heat that electric core array produced to heat up fast because can't outwards give off effectively to can maintain electric core array's temperature better, guarantee the performance of battery box.
(2) Embodiment of electric vehicle
In the present embodiment, the electric vehicle includes the battery box described in the embodiment of the battery box described above.
The electric vehicle provided by the embodiment comprises the battery box, has the same beneficial effects as the battery box, and is not repeated.
It is noted that, in this document, 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 apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The battery box is characterized by comprising a box body; at least one layer of battery cell array is arranged in the box body, and each layer of battery cell array consists of a plurality of battery cells;
temperature control parts are arranged at two ends of each layer of the battery cell array, and the temperature control parts are connected with the aluminum bars at the end parts of the battery cells; the temperature control part is made of a phase-change material.
2. The battery box according to claim 1, wherein two layers of the cell arrays are arranged in the box body, and the number of the temperature control members is four, namely a first temperature control member, a second temperature control member, a third temperature control member and a fourth temperature control member;
the first temperature control part and the second temperature control part are arranged on two sides of one layer of battery cell array, and the third temperature control part and the fourth temperature control part are arranged on two sides of the other layer of battery cell array.
3. The battery case of claim 1, wherein the phase change material is a composite PCM.
4. The battery box according to any one of claims 1 to 3, characterized in that the phase transition temperature of the temperature control member is 35 to 39 degrees.
5. The battery box of claim 1, wherein an air duct is disposed between the plurality of cells of each layer of the cell array;
the box body is provided with an air inlet and an air outlet;
and a fan is arranged at the air inlet and/or the air outlet.
6. The battery box of claim 5, wherein the cells are cylindrical cells.
7. The battery box of claim 6, wherein the air inlet and the air outlet are disposed on opposite sides of the box body, and the side where the air inlet and the air outlet are located faces the lateral direction of the battery cells.
8. The battery box of claim 5, further comprising a controller;
the temperature control part detects the temperature of each aluminum row connected with the temperature control part, and the controller controls the fan to start when the difference value between the temperatures of the aluminum rows is higher than a set value.
9. The battery box of claim 1, further comprising a box cover, wherein the box cover covers the box body and is in contact with the temperature control member; the box cover is provided with a plurality of radiating fins.
10. An electric vehicle characterized by comprising the battery box according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123455100.8U CN216958205U (en) | 2021-12-31 | 2021-12-31 | Battery box and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123455100.8U CN216958205U (en) | 2021-12-31 | 2021-12-31 | Battery box and electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216958205U true CN216958205U (en) | 2022-07-12 |
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ID=82315323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123455100.8U Active CN216958205U (en) | 2021-12-31 | 2021-12-31 | Battery box and electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216958205U (en) |
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2021
- 2021-12-31 CN CN202123455100.8U patent/CN216958205U/en active Active
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