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INVENTION
Russian Federation Patent RU2088001
Rechargeable Battery with internal heating
Name of the inventor: Kesov YV .; Volkov SS .; Titov EI
The name of the patentee: Military Automobile Institute
Address for correspondence:
Starting date of the patent: 1995.05.15
Use: production of chemical power sources for use in low temperature conditions. The inventive device comprises a housing 4 monoblock type with baffles and a prism 9 in which are placed blocks bipolar electrodes 10 separated by separators, and an electrolyte in which are placed the heaters 2 in the form of heat pipes Grover and protected over the entire surface termokislotostoykoy film of polytetrafluorethylene . Above the battery lid 7 placed additional heater 1 in the form of PTC, closed the lid 5. This increases the reliability and efficiency of battery heating.
DESCRIPTION OF THE INVENTION
The invention relates to electrical industry and can be used in the manufacture of batteries intended for use in low temperature conditions.
Known battery with internal eletkroobogrevom [1] monoblock type comprising a housing with baffles, electrodes ravnopolyarnye collected and separated in separator units, and the electric heater formed as a resistance element and disposed in the bottom area.
In this battery does not provide uniform heating of the electrodes height unit. Since the heater area is located in the bottom space is limited, its specific thermal stress is increased, which causes premature him out.
The closest to the proposed is a battery with an internal electrical heating [2] comprising a monobloc-type housing with baffles bipolar electrodes assembled in blocks and separated by separators, and a flat electric heater formed as a plate pokryoy protective film over the entire surface and placed side electrodes electrolyte.
This battery has the following significant disadvantages:
1) low reliability of the heater due to its insulation damage during assembly and sealing and the appearance of the battery galvanic connection between battery electrodes and the heating element, resulting in failure of the battery system;
2) non-uniform heating of the electrode unit.
The invention is aimed at improving battery reliability and work efficiency during heating.
This object is achieved in that the battery in the proposed heaters are in the form of heat pipes Grover protected over the entire surface termokislotostoykoy film, for example of PTFE and connected with additional heaters disposed above the lid (cap) battery (accumulator). Conclusions additional heaters are connected with the findings of an electrical energy source.
Additional heaters may be in the form, for example, PTC heaters.
Comparative analysis with the prototype allows us to conclude that the claimed battery with an internal heater is characterized in that the use of heaters in the form of heat pipes Grover possible to eliminate the additional heaters contact with the electrolyte, which ensures their reliable operation and uniform heating of the electrodes height unit. Heaters placed in the electrolyte, do not occupy space slurry, which ensures reliable operation of the battery. The design of the heater provides for the use of mechanization and automation in the assembly of the battery.
Figure 1 shows the proposed battery
2 the heating element assembly
The battery 8 includes a heater (2) in each accumulator. 8 wherein the heater further includes a heater 1 and heater 2 made of, for example, a heat pipe Grover and protected from exposure to electrolyte termokislotostoykoy thin film 3, such as of polytetrafluorethylene. Additional heaters 1 have thermal contact with the heater 2 on the battery lid 7. To eliminate heat losses to the environment more heaters 1 are closed cover 5 made of a material having low thermal conductivity. 5 mounted on the lid 6, the electrical leads that connect with supplementary heaters 1. Additional heaters 1 are connected to the parallel source of electrical energy. Two heaters are installed in the center between the electrodes of the battery 10 and the bottom of the prism 9 based on the battery housing 4.
Proposed battery with internal heating works as follows.
A charged battery is cooled to the desired temperature, and then connect to the terminals 6 DC or AC voltage value between 24 and 30 V.
The power allocated to the sub-heater 1, is determined by their electrical resistance. When electric current temperature rises more heaters 1 and 2 is transmitted through the heaters and the electrodes of the electrolyte inside the battery. Under the influence of the difference arising convective flow begins temperatures and stirring cold heat the electrolyte, whereby the average temperature of the electrolyte in the battery increases. The heating is stopped by temperature, providing a reliable engine start and the battery charge.
Thus, when the battery according to the proposed technical solution significantly increases manufacturability and reliability of the battery works at an efficiency of heating that helps to ensure a reliable engine start-up and improve the efficiency of motor vehicles operating in low temperature conditions.
CLAIM
- Battery with an internal heater, comprising a monobloc-type housing with baffles bipolar electrodes assembled in blocks and separated by separators and heaters protected over the entire surface termokislotostoykoy foil and placed in an electrolyte, characterized in that the heaters are in the form of heat pipes Grover and connected with additional heaters disposed above the battery cover.
- Battery according to claim 1, characterized in that the additional heater are formed as PTC.
- Battery according to claim 1, characterized in that termokislotostoykaya film made of fluoroplastic.
print version
Publication date 17.12.2006gg
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