High-heat-conduction battery module having battery cores, and assembling method thereof

Abstract

The invention relates to a high-heat-conduction battery module having battery cores, and an assembling method thereof. The high-heat-conduction battery module comprises battery cores, a primary fixing frame, an auxiliary fixing frame, common electrodes and a heat dissipating device, the primary fixing frame and the auxiliary fixing frame are combined to form a plurality of accommodating tanks for accommodating the battery cores, the battery cores are stably clamped by an interference projection which forms an integral body together with the primary fixing frame and the auxiliary fixing frame, and after the battery cores are assembled in the accommodating tanks, two electrodes of each of the battery cores are guided to a corresponding common electrode, and the heat dissipating device is combined with the primary fixing frame and / or the auxiliary fixing frame to force the tops and / or the bottoms of the battery cores to the heat dissipating device in order to stably fix the battery cores in the accommodating tanks by the interference projection and the heat dissipating device and increase the heat dissipating efficacies of the battery cores.

Description

【Technical field】 [0001] The invention relates to a high thermal conductivity battery module with multiple battery cores and an assembly method thereof, in particular to an assembly structure and an assembly method for more stable installation of the battery cores and increased heat dissipation efficiency of the battery cores. 【Background technique】 [0002] At present, the science and technology industry has gradually tried to reduce the use of polluting energy sources such as burning oil and natural gas, which have limited storage and cause a large amount of carbon emissions. Electric energy is a clean energy source. However, many vehicles currently use oil and natural gas as the driving energy required for driving. Therefore, in order to reduce the demand for oil and natural gas, electric vehicles that use electricity as the driving energy have become popular. issue. [0003] However, transportation tools such as electric vehicles are limited by the need to consume a lar...

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Problems solved by technology

[0002] At present, the science and technology industry has gradually tried to reduce the use of polluting energy sources such as burning oil and natural gas, which have limited storage and cause a large amount of carbon emissions. Electric energy is a clean energy source. However, many vehicles currently use oil and natural gas as the driving energy required for driving. Therefore, in order to reduce the demand for oil and natural gas, electric vehicles that use electricity as the driving energy have become popular. issue

[0003] However, transportation tools such as electric vehicles are limited by the need to consume a large amount of electric energy to drive the motor, so a large number of battery cells must be used, and the stored electric energy can be increased by connecting the battery cells in series / parallel. Must cope with severe temperature and operating environment tests, and even the possibility of accidental collision must be considered. For multiple battery cells connected in series / parallel, due to the impact of vibration in all directions, the connection between the battery and the battery may fall off or occur. The possibility of short circuit increases. If some batteries are disconnected due to the disconnection of the contacts, the power supply energy will be reduced, resulting in the failure of normal driving. However, if an external short circuit occurs, it may cause a single battery cell to burn due to the instantaneous high temperature. Explosion, and then spread to adjacent battery cells, causing serious safety problems. Therefore, in current designs, individual battery cells are generally connected to the overall circuit through a fuse, so that when a single battery cell has an external short circuit, it will be active. Open circuit, reducing interference to the overall circuit

[0004] However, when the battery cell is charging and discharging, the temperature of the battery cell and the circuit will also increase due to the passage of a large amount of current. Due to the limitation that the positive and negative electrodes of the battery cell must be equipped with electrodes to conduct electricity, the current general heat dissipation design, more Concentrate on the side wall direction of the battery cell

Unfortunately, due to common lithium secondary batteries, etc., the main metal and heat-conducting materials in the battery core are extended from the top surface to the bottom surface; The heat-conducting battery liquid will greatly increase the thermal resistance, so heat conduction from the side will be a relatively inefficient design

[0005] To make matters worse, when the safety structure of the battery core is covered with fireproof materials as mentioned above, it will not even be possible to set up the heat conduction and heat dissipation structure of the side wall, making the temperature problem even worse

In particular, when some manufacturers install fuse structures at both ends of the positive and negative electrodes of individual battery cells, the heat conduction design of the top and bottom surfaces will also be limited. When the heat conduction and heat dissipation problems cannot be solved, the internal temperature of the battery core will continue to rise. Simply trying to protect individual battery cells from burning and explosion by means of the above-mentioned fire-resistant structure that is not easy to conduct heat is just as impractical as simply raising the embankment and trying to block the flooding of the river bottom that is constantly silting up and rising.

[0006] Moreover, regardless of whether serial connection or parallel connection is used, in order to facilitate the installation or maintenance personnel of the car factory to conduct battery connection, the bottom and top of each battery cell must be connected through the line and pulled to the same side. The space for electric vehicle battery supply is limited. If the connecting lines are not properly sorted and stored, the utilization rate of the space will be reduced. On the other hand, for the installation or maintenance personnel of the car factory, too complicated lines will cause The inconvenience of battery replacement not only consumes time and manpower, but also increases the safety risk of maintenance personnel

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