A kind of lithium-ion power battery box
Technical field
The utility model relates to a kind of lithium-ion power battery box.
Background technology
In the battery that electric automobile and electric bus use at present, mainly use high-capacity lithium-ion power battery, the features such as lithium-ion-power cell has that quality is light, high specific energy, high life, pollution-free and use safety, become the electrokinetic cell of a new generation, and applied in electric automobile and electric bus field more and more.But lithium ion battery due to energy density high, shell is more crisp, the polymer Li-ion battery of special flexible package, and its Enclosure Strength is bad, is easily extruded and punctures.On the other hand, because lithium ion battery has charge protection device, need mechanical protection and rainwater protection etc., require the shell of a relative stiffness to protect lithium ion battery and interlock circuit.Existing electric motor vehicle cell box easily causes the damage to lithium battery after being clashed into, and is difficult to the insulation and the heat radiation that ensure lithium ion battery.
Summary of the invention
For solving above technical deficiency, the utility model provides one can to lithium battery available protecting, and the lithium-ion power battery box that preserving heat and radiating heat is effective.
The utility model is realized by following measures:
A kind of lithium-ion power battery box of the present utility model, comprise casing, described casing comprises inner housing and shell body, buffering space is left between inside and outside two-layer housing, and cushion in space and be provided with plastic support grid, described casing inner bottom part is equipped with heat exchange coil, box inside wall is provided with cell managing device and power connector, and described cell managing device signal is connected with voltage sensor, current sensor and temperature sensor.
Above-mentioned inner housing bottom, shell body top and plastic support grid are provided with air vent hole, and the air vent hole on inner housing bottom and shell body top staggers up and down.
Above-mentioned casing is provided with the plug connector extended outside casing.
Above-mentioned shell body upper opening place inside contracts, and inside contract part sidewall on be provided with bolt hole.
The beneficial effects of the utility model are: body structure is reasonable in design; when being subject to impacting; effectively can play the effect of protection lithium battery; and employing heat exchange coil; when external environment is cold or hot; the temperature in casing can be adjusted, the temperature work that lithium battery is being applicable to, ensure that lithium battery can fully discharge.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1 shell body, 2 inner housings, 3 plastic support grids, 4 air vent holes, 5 heat exchange coils, 6 power connectors, 7 plug connectors, 8 cell managing devices.
Embodiment
Below in conjunction with accompanying drawing, further detailed description is done to the utility model:
As shown in Figure 1, a kind of lithium-ion power battery box of the present utility model, comprises casing, and casing comprises inner housing 2 and shell body 1, and inner housing 2 and shell body 1 all adopt certain thickness steel plate to make.Leave buffering space between inside and outside two-layer housing, and cushion in space and be provided with plastic support grid 3.When casing is subject to clashing into, shell collision deformation, simultaneously can extruding plastic support grid 3, and cushions space and plastic support grid 3 can play cushioning effect, reduces impact and is transmitted to lithium battery in casing, thus play a protective role to lithium battery.
Casing inner bottom part is equipped with heat exchange coil 5, box inside wall is provided with cell managing device 8 and power connector 6, and cell managing device 8 signal is connected with voltage sensor, current sensor and temperature sensor.Lithium battery in casing is summarised in together by power connector 6, concentrates outwards power supply.Cell managing device 8 is by the state of the lithium battery in voltage sensor and current sensor Real-Time Monitoring casing, to be supplied to user's Real Time Observation, temperature in temperature sensor Real-Time Monitoring casing, when temperature drift, in heat exchange coil 5, pass into cold water cooling, when temperature is on the low side, hot water can be passed into improve temperature in heat exchange coil 5, the temperature work that lithium battery is being applicable to, ensures that lithium battery can fully discharge.
Inner housing 2 bottom, shell body 1 top and plastic support grid 3 are provided with air vent hole 4, and the air vent hole about 4 on inner housing 2 bottom and shell body 1 top staggers.This ensure that the aeration of casing, avoid again entering casing water and dust.Casing is provided with the plug connector 7 extended outside casing, facilitates casing to install.Shell body 1 upper opening place inside contracts, and inside contract part sidewall on be provided with bolt hole, play the effect of dustproof and waterproof.
The above is only the preferred implementation of this patent; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the art of this patent principle; can also make some improvement and replacement, these improve and replace the protection range that also should be considered as this patent.