CN202094248U - Storage battery cooling system - Google Patents

Abstract

The utility model discloses a storage battery cooling system, which is combined with a single storage battery or a battery pack composed of more than one storage battery. Each storage battery has two exposed pole plates. Connect the heat pipe for heat conduction and the heat conduction block connected to the other end of the heat pipe. The heat conduction block is provided in pairs to match the two electrodes of each battery, and is directly connected to the pole plate of the battery. Applying the cooling system proposed by the utility model, by directly using the polar plate of the battery as the starting point for the heat dissipation generated by the battery, and combining high thermal conductivity heat conduction blocks, heat pipes and other components to form a cooling system with various structures, it can be used from the battery. The inner and outer layers dissipate heat quickly, keeping the battery at a suitable working environment temperature for a long time, and greatly saving the energy consumption required for cooling, effectively avoiding the potential safety hazard of battery explosion caused by heat accumulation.

Description

battery cooling system

technical field

The utility model relates to a temperature control system, in particular to a temperature control system used for low-temperature, high-performance and long-life operation of storage batteries.

Background technique

The battery will generate heat during operation, especially when it is discharged and charged with a large current, the heat generation is particularly serious. Overheating will lead to performance degradation of the battery, and more serious damage or even explosion of the battery. At the same time, in computer rooms, telecommunications rooms and other environments, it is usually necessary to use air conditioners to cool the indoor air heated by the equipment to ensure the working environment temperature of the equipment. The temperature that most equipment needs to maintain is about 35°C, but due to The temperature of the battery needs to be maintained at 15°C to 25°C to ensure reliable operation. Therefore, the temperature of the air conditioner in the computer room needs to be maintained at 15°C to 25°C. As a result, the power consumption of the air conditioner accounts for more than 40% of the total power consumption of the computer room, resulting in a waste of power.

Some existing technologies provide a method to keep the temperature of the computer room relatively high, and further cool down the battery specifically. As shown in FIG. 1 , a plurality of batteries 1 are mainly placed in a closed space (sealed cabinet 2 ), and the closed space is cooled locally through a compression refrigeration system, so as to realize local heat dissipation of the batteries. The compression refrigeration system (comprising compressor unit 31, evaporator 32 and condenser 33) can obviously play a role in cooling the battery locally when it is working normally, but once an abnormal situation occurs, because the battery is closed, if the power of the cooling equipment is not enough, The heat emitted by the battery will quickly accumulate, and the temperature will increase rapidly, which will eventually lead to excessive temperature of the battery, cracking, damage or even explosion. Therefore, the technology of local cooling of storage battery has encountered great technical obstacles in its popularization.

More importantly, the traditional technology for cooling the battery is always based on the external environment of the battery. In addition to the poor thermal conductivity of the plastic shell of the battery itself, the air 4 existing in the sealed cabinet 2 is also a medium with high heat capacity. Therefore, even if the surrounding environment of the storage battery cools down, its internal working temperature may still remain at a relatively high temperature level.

Utility model content

In view of the defects of the above-mentioned traditional technology, the purpose of this utility model is to propose a cooling system suitable for the application of batteries of various scales, so that batteries can exert excellent performance in electrical and new energy applications, and improve the efficiency of new energy applications. High efficiency; at the same time greatly reduce energy consumption and eliminate potential safety hazards.

The purpose of this utility model will be achieved through the following technical solutions:

A storage battery cooling system, which is combined with a single storage battery or a battery pack composed of more than one storage battery. Each of the storage batteries has two exposed pole plates. The source is connected to a heat pipe for heat conduction and a heat conduction block connected to the other end of the heat pipe. The heat conduction block is provided in pairs to match the two electrodes of each battery, and is directly connected to the pole plate of the battery.

Further, the heat conduction block is a thermally conductive block integrally connected with the heat pipe, and the heat conduction block is provided with screw holes for connecting with the pole plate.

Further, the cooling system further includes a casing heat conduction block connected to the casing of the battery, and the casing heat conduction block is a block with heat conduction, and is connected to a cold source through a heat pipe.

Further, the cold source is one or a combination of the heat conduction plate of the semiconductor refrigeration system and the condensation plate of the compressor refrigeration system, and the connection between the cold source and the heat pipe is provided with an insulating heat conduction layer.

Further, from the perspective of the architectural form of the cooling system, the following situations may be included:

A. For a battery pack composed of more than one storage battery, and the condensing plate of the compressor refrigeration system is used as the cold source, the cooling system is a centralized cooling structure: the cold source and all the batteries are placed in a sealed cabinet, and the heat conduction block is used to and the heat pipes are centrally connected to the cold source, and are connected to the heat exchange of the compressor unit outside the sealed cabinet through the cold source.

B. For a battery pack composed of more than one battery, and the heat conduction plate of the semiconductor refrigeration system is used as the cold source, the cooling system is a centralized cooling structure: all the batteries are placed in a sealed cabinet, and are centrally connected through heat conduction blocks and heat pipes. To the cold source, the cold end of the cold source connected to the heat pipe is arranged inside the sealed cabinet, and the hot end of the cold source is arranged outside the sealed cabinet, and is connected to the radiator outside the sealed cabinet for heat exchange.

C. For a battery pack composed of more than one battery, and the heat conduction plate of the semiconductor refrigeration system is used as the cold source, the cooling system is a closed distributed cooling structure: all the batteries are placed in a sealed cabinet, through heat conduction blocks and heat pipes Connect to the cold source corresponding to each storage battery one by one, the cold end of each cold source connected to the heat pipe is arranged inside the sealed cabinet, and the hot end of each cold source is arranged outside the sealed cabinet, and is connected with the sealed cabinet. The heat exchange of the radiator outside the cabinet is connected.

D. For a battery pack composed of more than one battery, and the heat conduction plate of the semiconductor refrigeration system is used as a cold source, the cooling system is an open distributed cooling structure: all batteries are arranged in an open space, through heat conduction blocks and heat pipes Respectively connected to the cold source corresponding to each storage battery one by one, the cold end and the hot end of each cold source are separated by a heat shield, wherein each cold end is connected with a heat pipe on one side of the heat shield, and each hot end It is connected to the heat exchange of the radiator on the other side of the heat shield.

Compared with the traditional technology, the cooling system proposed by the utility model has remarkable effects:

By directly using the pole plate of the battery as the starting point for the heat dissipation generated by the battery, combined with high thermal conductivity heat conduction blocks, heat pipes and other components to form a cooling system with various structures, the heat can be quickly dissipated from the inside of the battery, while the battery The casing can still dissipate heat naturally, keeping the battery at a suitable working environment temperature for a long time, and greatly saving the energy consumption required for cooling, effectively avoiding the safety hazard of explosion caused by the heat accumulation of the battery.

The specific implementation of the utility model will be described in further detail below in conjunction with the accompanying drawings of the embodiments, so as to make the technical solution of the utility model easier to understand and grasp.

Description of drawings

Figure 1 is a schematic diagram of the system architecture of the local heat dissipation of the traditional battery cooling system;

Fig. 2 is a schematic diagram of the structure of the basic principle of heat dissipation of the battery cooling system of the utility model;

Fig. 3 is a schematic diagram of the architecture after the basic principle shown in Fig. 2 is further improved;

Fig. 4 is a schematic diagram of an embodiment of the utility model using a compressor refrigeration system;

Fig. 5 is a schematic diagram of the structure of an embodiment of the utility model using a semiconductor refrigeration system;

Fig. 6 is a schematic diagram of another embodiment of the utility model using a semiconductor refrigeration system;

Fig. 7 is a schematic diagram of another embodiment of the utility model using a semiconductor refrigeration system.

Detailed ways

Aiming at the deficiencies of the prior art, the utility model innovatively proposes a new battery cooling system according to the analysis results of the thermal conductivity of different materials and factors such as the heat generation, distribution, and dissipation of the battery, and further provides the cooling system A variety of feasible architecture forms to meet different heat dissipation requirements of batteries.

From the perspective of basic principle and structure, as shown in Figure 2, this kind of battery cooling system is combined with a single battery or a battery pack composed of more than one battery, where each battery has two exposed plates. The following will take a single storage battery as an example to illustrate the characteristics of the basic structure of the cooling system: it includes a cold source 8, a heat pipe 7 connected at one end to the cold source for heat conduction, and a heat conduction block 61 connected to the other end of the heat pipe. The heat conduction blocks 61 are provided in pairs to match the two electrodes of each storage battery, and are directly connected to the pole plates 11 of the storage battery 1 . It can be seen from the figure that the heat conduction block 61 is a block integrally connected with the heat pipe and has good thermal conductivity, and is provided with screw holes for connecting with the pole plate (though not shown in the figure, it can be seen vividly in the figure). The heat conduction block 61 and the pole plate 11 are screwed and fixed into one); its material can be metal, and can also be other non-metals with comparable thermal conductivity.

Based on the above basic principles, its further optimization scheme is shown in Figure 3. The battery cooling system can increase the optional shell heat conduction block 62 while cooling the battery internally, and the optional shell heat conduction block 62 It is connected with a cold source to dissipate heat from the battery case, so that the battery can work efficiently, safely and reliably.

The cold source includes two forms of direct cooling or indirect cooling. The semiconductor cooling is the direct cooling source, while the cooling source that transfers heat through the connection of the heat pipe and the condensing plate in the compressor cooling method is the indirect cooling source. However, in the application of the present invention, one of the cold source forms can be used alone, or both forms can be used in combination. In addition, an insulating and heat-conducting layer or an insulating and heat-conducting material (not shown) is provided between the connection between the cold source and the heat pipe to avoid short-circuit failure of the battery caused by metal devices such as heat pipes.

From the point of view of the applied system architecture: the new battery cooling system involved in the utility model includes two architecture forms of centralized and distributed, and the battery can be placed in a closed or open space under the centralized or distributed cooling mode. Since the new storage battery cooling method involved in the utility model adopts the condensing plate and the semiconductor refrigeration device, the corresponding cooling methods are compressor refrigeration cooling and semiconductor conduction cooling, wherein the compressor refrigeration cooling is suitable for the centralized structure of the storage battery, and Semiconductor conduction cooling is not only suitable for centralized and/or distributed architecture forms of batteries, but also can dissipate heat for batteries placed in closed or open spaces under distributed architecture forms. See in detail with the accompanying drawings:

As shown in FIG. 4 , it is a schematic diagram of the structure of an embodiment of the utility model using a compressor refrigeration system. It can be seen from the diagram: for a battery pack composed of three batteries, and the condensing plate 81 of the compressor refrigeration system is used as the cold source, the cooling system is a centralized cooling structure: the cold source and all the batteries 1 are placed in the sealed cabinet 2 , is centrally connected to the cold source through the heat conduction block and the heat pipe 7, and is connected to the compressor unit 31 outside the sealed cabinet through the heat exchange through the cold source.

As shown in FIG. 5 , it is a structural diagram of an embodiment of the utility model using a semiconductor refrigeration system. It can be seen from the figure: for a battery pack composed of three batteries, and the heat conduction plate 82 of the semiconductor refrigeration system is used as the cold source, the cooling system is a centralized cooling structure: all the batteries 1 are placed in the sealed cabinet 2, through the heat conduction block And the heat pipe 7 is centrally connected to the cold source, the cold end of the cold source connected to the heat pipe 7 is arranged inside the sealed cabinet 2, and the hot end of the cold source is arranged outside the sealed cabinet, and is connected to the radiator 9a outside the sealed cabinet for heat exchange .

Please refer to FIG. 6 again, which is a structural diagram of another embodiment of the utility model using a semiconductor refrigeration system. It can be seen from the figure: for a battery pack composed of three batteries, and the heat conduction plate 82 of the semiconductor refrigeration system is used as the cold source, the cooling system is a closed distributed cooling structure: all the batteries 1 are placed in the sealed cabinet 2, The heat conduction block and the heat pipe 7 are respectively connected to the cold source corresponding to each storage battery one by one. On the outside of the sealed cabinet 2, it is connected to the radiator 9b outside the sealed cabinet for heat exchange.

Please refer to FIG. 7 again, which is a structural diagram of another embodiment of the utility model using a semiconductor refrigeration system. It can be seen from the figure: for a battery pack composed of three batteries, and the heat conduction plate 82 of the semiconductor refrigeration system is used as a cold source, the cooling system is an open distributed cooling structure: all batteries 1 are arranged in an open space, through The heat conduction block and the heat pipe 7 are respectively connected to the cold source corresponding to each storage battery, and the cold end and the hot end of each cold source are separated by a heat shield 21, wherein each cold end is connected to the heat pipe 21 One side, and each hot end is connected to the other side of the heat shield 21 for heat exchange with the radiator 9b.

The application of the battery cooling system can keep the battery at a suitable working environment temperature for a long time, greatly save the energy consumption required for cooling, and effectively avoid the safety hazard of explosion caused by the heat accumulation of the battery. Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the utility model, rather than as a limitation to the utility model, as long as within the spirit of the utility model, the above-mentioned The changes and modifications of the embodiments will all fall within the scope of the claims of the present utility model.

Claims (8)

1. A storage battery cooling system, which is combined with a single storage battery or a battery pack composed of more than one storage battery. Each of the storage batteries has two exposed pole plates. It is characterized in that: the cooling system includes a cold source, one end The heat pipe connected to the cold source for heat conduction and the heat conduction block connected to the other end of the heat pipe, the heat conduction block is provided in pairs to match the two electrodes of each battery, and is directly connected to the pole plate of the battery. 2. A storage battery cooling system according to claim 1, characterized in that: the heat conduction block is a thermally conductive block integrally connected with the heat pipe, and the heat conduction block is provided with a connected screw holes. 3. A storage battery cooling system according to claim 1, characterized in that: the cooling system further comprises a shell heat conduction block connected to the battery shell, and the shell heat conduction block is a heat conductive block The body is connected to the cold source through a heat pipe. 4. A storage battery cooling system according to claim 1 or 3, characterized in that: the cold source is one or a combination of the heat conduction plate of the semiconductor refrigeration system and the condensation plate of the compressor refrigeration system, and An insulating and heat-conducting layer is provided at the connection between the cold source and the heat pipe. 5. A storage battery cooling system according to claim 1, characterized in that: for a battery pack composed of more than one storage battery, and the cooling plate of the compressor refrigeration system is used as a cold source, the cooling system is a centralized cooling structure Form: the cold source and all batteries are placed in a sealed cabinet, connected to the cold source through heat conduction blocks and heat pipes, and connected to the compressor unit outside the sealed cabinet through heat exchange through the cold source. 6. A storage battery cooling system according to claim 1, characterized in that: for a battery pack composed of more than one storage battery, and the heat conduction plate of the semiconductor refrigeration system is used as a cold source, the cooling system is in the form of centralized cooling : All batteries are placed in a sealed cabinet, and are centrally connected to the cold source through heat conduction blocks and heat pipes. The cold end connecting the cold source and the heat pipe is set inside the sealed cabinet, and the hot end of the cold source is set outside the sealed cabinet It is connected with the heat exchange of the radiator outside the sealed cabinet. 7. A storage battery cooling system according to claim 1, characterized in that: for a battery pack composed of more than one storage battery, the heat conduction plate of the semiconductor refrigeration system is used as a cold source, and the cooling system is a closed distributed cooling system Structure form: all batteries are placed in a sealed cabinet, connected to the cold source corresponding to each battery through heat conduction blocks and heat pipes, and the cold end of each cold source connected to the heat pipe is located inside the sealed cabinet. And the hot end of each cold source is arranged outside the sealed cabinet, and is connected with the radiator outside the sealed cabinet for heat exchange. 8. A storage battery cooling system according to claim 1, characterized in that: for a battery pack composed of more than one storage battery, and the heat conduction plate of the semiconductor refrigeration system is used as a cold source, the cooling system is an open distributed cooling system Architectural form: all batteries are arranged in an open space, and are connected to the cold source corresponding to each battery through heat conduction blocks and heat pipes, and the cold end and hot end of each cold source are separated by a heat shield, of which Each cold end is connected to the heat pipe on one side of the heat insulation board, and each hot end is connected to the radiator for heat exchange on the other side of the heat insulation board.

Images