CN216850067U - Thermal control structure of large capacity battery - Google Patents
Thermal control structure of large capacity battery Download PDFInfo
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- CN216850067U CN216850067U CN202122630234.2U CN202122630234U CN216850067U CN 216850067 U CN216850067 U CN 216850067U CN 202122630234 U CN202122630234 U CN 202122630234U CN 216850067 U CN216850067 U CN 216850067U
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Abstract
The application relates to a heat control structure of a high-capacity battery, which mainly comprises a pole provided with a heat pipe hole, a heat pipe, a semiconductor refrigerating and heating device and a temperature detection and control unit, wherein when the temperature of the battery is too low, the temperature detection element detects that the temperature is less than a set value, the heating function of the semiconductor refrigerating and heating device is turned on, and the heat pipe penetrating through the length direction of the pole heats the pole and the battery; when the temperature detecting element detects that the temperature is greater than the set value when the temperature of the battery is too high, the refrigerating function of the semiconductor refrigerating and heating device is turned on, the pole column and the battery are refrigerated through the heat pipe penetrating in the length direction of the pole column, the cycle life and the cycle capacity of the large-capacity battery can be effectively prolonged, and the temperature uniformity and the safety of the battery are improved.
Description
Technical Field
The utility model belongs to the technical field of the battery safety, concretely relates to thermal control structure of large capacity battery.
Background
The square battery of lithium cell maximum capacity on the existing market is 400Ah, and the cylinder battery of maximum capacity is not more than 100Ah, under the background of "carbon reaches the peak" and "carbon neutralization", the energy storage trade is expected to obtain the development of growing, nevertheless receive the influence of battery capacity, the lithium cell need carry out the series-parallel connection of a plurality of batteries when the energy storage is used, make to connect spare and accessory parts numerous, the hookup step is complicated, loaded down with trivial details, battery management system and wire rod, the quantity of battery box is very big, the energy storage cost is therefore high.
The main problem in manufacturing large-capacity batteries is the heating problem of the batteries, in particular to the heating problem of the welding part of a pole and a pole lug.
At present, the common solution to the problem that the battery generates heat sets up the heat-conducting plate or sets up the fan and dispel the heat with the air-cooled mode on the box of battery or on the battery, like 201310138441.3 group battery and heat radiation structure, it mainly sets up semiconductor air conditioner and two fans that set up relatively, utilize semiconductor air conditioner refrigeration back to utilize the fan convection to blow to carry out the heat exchange, in order to increase the radiating efficiency, thereby realize the heat exchange of group battery inside and external environment, but this method exists and exchanges heat with the external environment with the air convection mode, lead to heat exchange efficiency low, and can't solve the problem that battery operating temperature is too low. 2012103763246A power battery heat management system is composed of a battery box, a heat pipe, a flow plate, a liquid box, a semiconductor heating/cooling element, a liquid circulating pump, a battery control unit, a temperature sensor, a radiator and a fan, wherein the heat pipe is closely attached to the battery template and the flow plate above the battery module, the flow plate is internally provided with a liquid circulating pipeline connected to the liquid circulating pump, the liquid circulating pump is also connected to the liquid box filled with circulating liquid, and the semiconductor heating/cooling element is contacted with the liquid box and is attached to the radiator to realize rapid heating and cooling.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the application provides a thermal control structure of a high-capacity battery, which has the advantages of uniform heat transfer, capability of heating and temperature equalization of the battery, effective improvement of the cycle life and the cycle capacity of the high-capacity battery, and improvement of the temperature equalization and the safety of the battery.
The technical scheme adopted by the application is as follows:
a heat control structure of a large-capacity battery comprises a pole, a heat pipe, a semiconductor refrigerating and heating device, a temperature detection unit and a control unit;
a pole provided with a heat pipe hole;
the heat pipe is used for heating the pole and conducting heat or refrigerating the battery, and is inserted into the heat pipe hole of the pole;
the semiconductor refrigeration heater heats or refrigerates the pole column through the heat pipe;
the temperature detection unit is used for detecting the temperature of the battery and feeding back the temperature to the control unit;
and the control unit is used for receiving the temperature signal feedback of the temperature detection unit and controlling the heating or the cooling of the semiconductor refrigerating and heating device.
Further limit, the lateral part of utmost point post is provided with the soaking piece.
Further limited, the side part of the pole is provided with an embedded groove along the length direction, and the soaking piece is embedded in the embedded groove.
Further prescribe a limit to, soaking is soaking board or soaking pipe fitting, and soaking board or soaking pipe fitting set up along the outside portion length direction of utmost point post, accomplish from the outside of utmost point post and heat or refrigerate.
Further limiting, a heat-conducting medium is arranged between the heat pipe and the inner cavity of the pole, and uniform temperature and uniform heat are realized.
Further limited, the heat-conducting medium is heat-conducting silica gel or heat-conducting silicone oil.
Further inject, the heat pipe hole runs through in the length direction of utmost point post and sets up in the inside of utmost point post.
Further limited, the heat pipe holes in the pole posts are arranged close to the welding positions with the pole lugs and are one or more.
Further limiting, one end of the heat pipe is of a flat structure, and the bent heat pipe extends to the outer side of the pole and is connected with the semiconductor refrigerating and heating device.
Further limit, heat pipe or soaking piece are a plurality of that set up side by side, and the flat hole that passes through utmost point post of a plurality of heat pipes or soaking piece extends to the mutual range upon range of setting of one end outside the utmost point post.
Further limiting, when the anode and the cathode share the semiconductor heating refrigerator, the semiconductor cooling refrigerator, the soaking pipe and the pole are separated by gaskets made of heat-conducting insulating materials.
Further limit, the material of gasket is heat conduction silica gel pad or potsherd.
Further limiting, when the semiconductor heating refrigerators are arranged on the anode and the cathode independently, the semiconductor refrigerating and heating device comprises an anode semiconductor refrigerating and heating device and a cathode semiconductor refrigerating and heating device, the anode semiconductor refrigerating and heating device and the cathode semiconductor refrigerating and heating device are connected with the same control unit, and the anode semiconductor refrigerating and heating device heats or refrigerates the anode column of the battery; the negative semiconductor refrigerating and heating device heats or refrigerates the negative pole column of the battery, so that the positive pole and the negative pole are respectively heated or refrigerated, the soaking efficiency is improved, flexible control is realized, and the function modularization effect is achieved.
Further, the starting method of the semiconductor refrigerating and heating device is as follows: when the temperature detection unit detects that the temperature of the battery is lower than 5 ℃, the temperature is fed back to the control unit, the control unit controls and starts the heating function of the semiconductor refrigerating and heating device, the heating is started through the heat pipe, and the heating is stopped when the temperature is raised to 10 ℃; when the temperature detection unit detects that the temperature of the battery is higher than 35 ℃, the temperature is fed back to the control unit, the control unit controls and starts the refrigeration function of the semiconductor refrigeration heater, the heat pipe starts refrigeration, and the refrigeration is stopped when the temperature is reduced to 30 ℃.
Further, the temperature detection unit is one or more and is arranged in the heat pipe hole in the pole or in the battery.
Compared with the prior art, the beneficial effect of this application is:
1) this application sets up the heat pipe through inside and the outside at utmost point post to lay the soaking pipe along length direction at the outside surface of utmost point post, and then can guarantee that the heat transfer effect of utmost point post and battery is good, realize the samming control, improve the samming of battery.
2) The heating and refrigerating function of the semiconductor refrigerating and heating device is turned on when the temperature detecting element detects that the temperature is less than a set value when the temperature of the battery is too low, and the pole and the battery are heated through the heat pipe penetrating through the length direction of the pole; when the temperature detecting element detects that the temperature is greater than the set value when the temperature of the battery is too high, the refrigerating function of the semiconductor refrigerating and heating device is turned on, the terminal posts and the battery are refrigerated through the heat pipes penetrating in the length direction of the terminal posts, the temperature rise and the temperature equalization control of the battery are further realized, the cycle life and the cycle capacity of the large-capacity battery are effectively prolonged, and the temperature equalization and the safety of the battery are improved.
3) The semiconductor refrigeration heater can heat or refrigerate the positive pole column and the negative pole column integrally, can also heat and refrigerate respectively, achieves flexible control, and achieves the function modularization effect.
Additional advantages, objects, and features of embodiments of the application will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of embodiments of the application.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a structural view of an electrode 1.
Fig. 2 is a schematic view of the connection structure of the soaking tube pole 1.
Fig. 3 is a schematic view of the connection structure of the single semiconductor refrigerating and heating device.
Fig. 4 is a schematic view of the connection structure of the double semiconductor refrigerating and heating device.
In the figure, 1-pole; 11-embedding grooves; 12-a heat pipe; 2-a battery; 3-a temperature detection unit; 4-control switch; 5-semiconductor refrigerating and heating device; 51-positive semiconductor refrigerating and heating device; 52-negative semiconductor refrigerating and heating device; 6-soaking parts.
Detailed Description
The embodiments of the present application will be described in further detail with reference to the accompanying drawings so that those skilled in the art can implement the embodiments with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
The application discloses large capacity battery's thermal control structure mainly is applicable to large capacity battery 2, and large capacity battery is very easily formed the problem that the heat concentrates the production and generate heat because battery 2 all on during operation utmost point post 1 and utmost point post utmost point ear welding department and battery body usually. Or under the lower condition of external environment, battery 2 temperature is too low and can't normally work, and this application provides the thermal control structure of a large capacity battery in order to solve this problem.
Example 1
As shown in fig. 1 to 3, the thermal control structure of the large-capacity battery of the present application mainly comprises a pole 1, a heat pipe 12, a semiconductor cooler/heater 5, a temperature detection unit 3, a control unit, and the like.
The utility model provides an utmost point post 1 is hollow structure, and this utmost point post 1 can be installed in the both sides of battery 2, and this utmost point post 1 includes positive post and negative pole post for the part of being connected with external conductor or adjacent battery cell offers the heat pipe hole along length direction in 1 insides of utmost point post, and this heat pipe hole is in order to set up near as being good with utmost point ear splice, can be one, also can be a plurality of. A heat pipe 12 is inserted into each heat pipe hole for heating the pole 1 and conducting heat or cooling the battery 2. In order to ensure that the heat between the heat pipe 12 and the pole 1 can be better transferred, the wall of the heat pipe 12 is coated with heat-conducting silica gel, and the heat-conducting silica gel can also be replaced by heat-conducting silicone oil which is mainly used as a heat-conducting medium to realize heat conduction and heat equalization effects. The outer surface of the pole 1 is provided with an embedded groove 11 along the length direction, a soaking part 6 is embedded in the embedded groove 11, the soaking part 6 is embedded in the embedded groove 11 along the length direction of the outer side part of the pole 1, the whole pole 1 is soaked from the outer side, the soaking part 6 can be a soaking pipe or a soaking plate, namely, the soaking pipe or the soaking plate can be of a tubular structure or a plate-shaped structure, the heat conduction and soaking effects can be realized, and the used material can be the same as the material of the heat pipe 12. The size of the embedded groove 11 can meet the requirement of installation of the soaking pieces 6, the number of the embedded grooves 11 can be adjusted according to the working environment of the battery and the specification of the soaking pieces 6, and uniform-temperature heating can be realized outside the battery.
Further, in order to improve the heat conduction or refrigeration efficiency, an insertion hole is formed in one end, close to the welding position with the tab, of the pole 1, the insertion hole is a flat hole or a circular hole, if the insertion hole is a flat hole, the ends of the soaking piece 6 and the heat pipe 12 are in flat structures, the soaking piece and the heat pipe penetrate through the flat hole, the soaking piece and the heat pipe are bent and extend to the outer side of the pole 1, and the flattening parts of the soaking pieces 6, which extend to the outer side, can be arranged in a stacked mode. When the soaking parts are round holes, the ends of the soaking parts 6 are round tube-shaped and penetrate through the round holes, so that the hole shape of the round holes or the flat holes can be selected to be matched with the structure of the soaking parts 6.
The heat pipe 12 and the bent end of the soaking piece 6 are respectively connected with the semiconductor refrigerating and heating device 5. The heating and cooling of the semiconductor refrigerating and heating device 5 are transferred to the battery 2 through the heat pipe 12 and/or the soaking piece 6 to heat or cool the battery 2. The bottom of the semiconductor refrigerating and heating device 5 is connected with a positive plate and a negative plate which are respectively connected with a positive pole column and a negative pole column correspondingly. In order to avoid electric conduction, a heat conduction and insulation silica gel pad is padded between the semiconductor refrigerating and heating device 5 and the positive and negative plates, and the heat conduction and insulation rubber pad can be replaced by a ceramic chip.
The temperature detection unit 3 is arranged in the heat pipe hole in the pole 1 or in the battery 2, and the temperature detection unit 3 can select a K-type thermocouple or a temperature sensor of other types for monitoring the temperature of the large-capacity battery 2. Further, the temperature detection unit 3 may be one or a plurality of units, and may be appropriately adjusted according to the mounting position and specification of the battery 2 and the pole 1.
The temperature detection unit 3 monitors the temperature of the battery 2 and feeds back a monitoring signal to the control unit, namely, the temperature detection unit 3 and the control unit can wirelessly transmit signals or are in wired connection through a data line.
The control unit includes controller and control switch 4, and the PLC controller can be chooseed for use to the controller, can preset operating temperature, and the temperature that feeds back when temperature detecting element 3 surpasss the settlement temperature value, can send control command to control switch 4. The control switch 4 is connected with the semiconductor refrigerating and heating device 5, and the starting or closing of the semiconductor refrigerating and heating device 5 and the heating or refrigerating working mode are realized by adjusting the working state of the control switch 4. The PLC controller of the present embodiment may employ a conventional commercially available product.
When the anode and the cathode share the semiconductor heating refrigerator, the semiconductor cooling and heating refrigerator, the soaking pipe and the pole are respectively separated by a gasket made of heat-conducting insulating materials, when the temperature detection unit 3 detects that the temperature of the battery 2 is less than 5 ℃, the temperature is fed back to the control unit, the heating function of the semiconductor cooling and heating refrigerator 5 is started through a control switch 4 of the control unit, the heating is started through the heat pipe 12, and the heating is stopped when the temperature is raised to 10 ℃; when the temperature detection unit 3 detects that the temperature of the battery 2 is higher than 35 ℃, the temperature is fed back to the control unit, the refrigeration function of the semiconductor refrigeration heater 5 is started through the control switch 4 of the control unit, refrigeration is started through the heat pipe 12, and the refrigeration is stopped when the temperature is reduced to 30 ℃.
Example 2
In the thermal control structure of the large-capacity battery in this embodiment, the positive and negative electrodes of the battery are independently provided with the semiconductor heating cooler, that is, the semiconductor cooling heater 5 includes a positive semiconductor cooling heater 51 and a negative semiconductor cooling heater 52, as shown in fig. 4, the positive and negative electrodes are respectively heated and cooled, and 51 is a positive semiconductor cooling heater; the cathode semiconductor refrigerating and heating device 52 is a cathode semiconductor refrigerating and heating device, the anode semiconductor refrigerating and heating device 51 and the cathode semiconductor refrigerating and heating device 52 are respectively connected with the control unit, and the anode semiconductor refrigerating and heating device 51 heats or refrigerates the anode pole of the battery 2 through the heat pipe 12; the cathode semiconductor refrigerating and heating device 52 heats or refrigerates the cathode column of the battery 2 through the heat pipe 12, so that the anode and the cathode are respectively heated or refrigerated, the soaking efficiency is improved, flexible control is realized, and the function modularization effect is achieved.
When the temperature sensor detects that the temperature of the battery 2 is lower than 5 ℃, the control switch 4 is started to start the heating functions of the positive semiconductor refrigerating and heating device 51 and the negative semiconductor refrigerating and heating device 52, the positive pole column and the negative pole column of the battery 2 are respectively heated through the heat pipe 12, and the heating is stopped when the temperature rises to 10 ℃; when the temperature sensor detects that the temperature of the battery 2 is higher than 35 ℃, the current reverses direction, the control switch 4 is started to start the refrigeration function, the control switch 4 is started to start the heating functions of the positive semiconductor refrigeration heater 51 and the negative semiconductor refrigeration heater 52, the positive pole column and the negative pole column of the battery 2 are respectively refrigerated through the heat pipe 12, and the refrigeration is stopped when the temperature is reduced to 30 ℃.
While embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.
Claims (14)
1. A heat control structure of a large-capacity battery is characterized by comprising a pole, a heat pipe, a semiconductor refrigerating and heating device, a temperature detection unit and a control unit;
a pole provided with a heat pipe hole;
the heat pipe is used for heating the pole and conducting heat or refrigerating the battery, and is inserted into the heat pipe hole of the pole;
the semiconductor refrigeration heater heats or refrigerates the pole column through the heat pipe;
the temperature detection unit is used for detecting the temperature of the battery and feeding back the temperature to the control unit;
and the control unit is used for receiving the temperature signal feedback of the temperature detection unit and controlling the heating or the cooling of the semiconductor refrigerating and heating device.
2. The thermal control structure of a large-capacity battery according to claim 1, wherein the side portion of the post is provided with a soaking member.
3. The thermal control structure of a large-capacity battery according to claim 2, wherein the side portion of the post is provided with an insertion groove along the length direction, and the soaking member is inserted into the insertion groove.
4. The thermal control structure of a large-capacity battery according to claim 3, wherein the soaking member is a soaking plate or a soaking pipe member, and the soaking plate or the soaking pipe member is disposed along the length direction of the outer side portion of the terminal post.
5. The thermal control structure of a large-capacity battery according to any one of claims 1 to 4, wherein a heat transfer medium is provided between the heat pipe and the inner cavity of the post.
6. The thermal control structure of a large-capacity battery according to claim 5, wherein the heat transfer medium is heat-conductive silicone gel or heat-conductive silicone oil.
7. The heat control structure of a large-capacity battery according to claim 6, wherein the heat pipe hole penetrates in a length direction of the post and is provided inside the post.
8. The heat control structure for a large capacity battery according to claim 4, wherein the heat pipe hole in the terminal is provided near the welding with the tab in one or more.
9. The thermal control structure for large-capacity batteries according to claim 8, wherein one end of the heat pipe is a flat structure, and the bent end extends to the outside of the pole and is connected with the semiconductor refrigerating and heating device.
10. The thermal control structure for a large-capacity battery according to claim 9, wherein the heat pipe is provided in plurality in parallel, and one ends of the plurality of heat pipes extending to the outside of the pole through the pole are stacked on each other.
11. The thermal control structure of a large-capacity battery as claimed in claim 10, wherein, when the positive and negative electrodes share the semiconductor heating/cooling device, the semiconductor heating/cooling device is separated from the soaking tube and the terminal by spacers made of heat-conductive insulating material.
12. The thermal control structure of a large-capacity battery according to claim 11, wherein the gasket is a thermally conductive silicone gasket or a ceramic sheet.
13. The thermal control structure of a large-capacity battery according to claim 11, wherein when the semiconductor heating refrigerators are separately provided for the positive and negative electrodes, the semiconductor cooling refrigerators include a positive semiconductor cooling refrigerator and a negative semiconductor cooling refrigerator, the positive semiconductor cooling refrigerator and the negative semiconductor cooling refrigerator are connected to the same control unit, and the positive semiconductor cooling refrigerator heats or cools the positive electrode column of the battery; the negative semiconductor refrigerating and heating device heats or refrigerates the negative pole column of the battery.
14. The thermal control structure of a large-capacity battery according to claim 6, wherein the temperature sensing unit is one or more and is disposed in the thermal via hole in the terminal or inside the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122630234.2U CN216850067U (en) | 2021-10-29 | 2021-10-29 | Thermal control structure of large capacity battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122630234.2U CN216850067U (en) | 2021-10-29 | 2021-10-29 | Thermal control structure of large capacity battery |
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| Publication Number | Publication Date |
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| CN216850067U true CN216850067U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122630234.2U Active CN216850067U (en) | 2021-10-29 | 2021-10-29 | Thermal control structure of large capacity battery |
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| CN (1) | CN216850067U (en) |
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- 2021-10-29 CN CN202122630234.2U patent/CN216850067U/en active Active
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