阅读说明：本技术 一种非能动散热电池箱 (Passive heat dissipation battery box ) 是由 蔡潇 雷政军 于 2021-08-02 设计创作，主要内容包括：本申请公开了一种非能动散热电池箱,包括箱体,所述箱体包括底座和设置在所述底座上内箱体、外箱体,所述内箱体和外箱体之间设有相变材料,所述内箱体中设有电池组,所述电池组包括两列平行设置的电池单元,两列所述电池单元的电极相对设置；两列所述电池单元之间设有挡板,所述电池单元与挡板之间设有泄爆通道。本申请利用石蜡等固体相变材料以及利于散热的铝合金等材料的筒体结构,在不需要提供额外的冷却设备的情况下,能够将电池箱中的电芯在充放电时产生的热量吸收并释放出来,使得电芯本体温度控制在一定范围之内,有利于电芯串联设计,有利于电池的散热、泄爆气体的释放收集,电池箱的模块化设计、应用,储能系统的模块化设计。(The application discloses a passive heat dissipation battery box, which comprises a box body, wherein the box body comprises a base, an inner box body and an outer box body, the inner box body and the outer box body are arranged on the base, a phase change material is arranged between the inner box body and the outer box body, a battery pack is arranged in the inner box body, the battery pack comprises two rows of battery units which are arranged in parallel, and electrodes of the two rows of battery units are arranged oppositely; and a baffle plate is arranged between the two battery units, and an explosion venting channel is arranged between the battery units and the baffle plate. This application utilizes solid phase change materials such as paraffin and does benefit to the barrel structure of materials such as radiating aluminum alloy, under the condition that need not provide extra cooling apparatus, can absorb and release the heat that the electric core in the battery box produced when charging and discharging, make electric core body temperature control within a certain limit, be favorable to electric core series connection design, be favorable to the heat dissipation of battery, let out the release of exploding gas and collect, the modular design of battery box, use, energy storage system's modular design.)

1. A passive heat dissipation battery box comprises a box body, wherein the box body comprises a base, an inner box body and an outer box body which are arranged on the base, and the passive heat dissipation battery box is characterized in that a battery pack is arranged in the inner box body and comprises two rows of battery units which are arranged in parallel, and electrodes of the two rows of battery units are arranged oppositely;

and a baffle plate is arranged between the two battery units, and an explosion venting channel is arranged between the battery units and the baffle plate.

2. The passive heat dissipation battery box according to claim 1, wherein a phase change material is disposed between the inner box and the outer box.

3. A passive heat dissipation battery box according to claim 2, wherein the battery unit includes a plurality of battery cells.

4. A passive heat dissipating battery pack according to claim 2, wherein compressible heat conductive spacers are provided between the battery pack and the inner wall of the inner case.

5. The passive heat dissipation battery box according to claim 2, wherein a plurality of partitions for placing the single batteries are provided in the inner box body.

6. The passive heat dissipation battery box according to claim 5, wherein the inner box body comprises clamping plates and end plates; the clamping plate is connected with the partition plate through a bolt.

7. The passive heat dissipation battery box according to claim 1, wherein rollers for moving the box body are provided under the base.

8. The passive heat dissipation battery box according to claim 1, comprising a connection control unit disposed above or below the box body;

the connection control unit comprises a connection busbar, an external plug, a BMS and an inverter module, wherein the connection busbar is used for connecting external power and signal cables of the battery box.

9. The passive heat-dissipation battery box according to claim 8, comprising a gas collection unit disposed above or below the connection control unit;

the gas collecting unit comprises an adsorption layer and a collecting layer which are used for collecting gas sprayed out when the battery is exploded.

Technical Field

The application relates to the field of batteries, in particular to an energy storage battery box.

Background

Energy storage battery in the existing market is generally applied to a power supply system in a centralized manner of an energy storage cabinet, and the energy storage cabinet is generally provided with a battery unit, an inverter, a control unit and the like. Because the power of the energy storage cabinet is high, all the battery cores are centralized together, and the problems of sympathetic ignition and sympathetic explosion of the battery are easily caused when the battery is ignited, so that the problem is difficult to solve; meanwhile, the heat dissipation of the battery and the control component in the energy storage cabinet requires 24 hours for opening the heat dissipation device in the energy storage cabinet, so that the energy consumption is high. Under the background of 'carbon peak reaching' and 'carbon neutralization', the energy storage industry is expected to be developed greatly, and the requirements of safety, energy conservation and high efficiency of the energy storage battery are imperative.

The phase-change material is used as a cooling medium, has the characteristics of high energy storage density, easily controlled process, high energy utilization efficiency and the like, does not consume any external energy when absorbing and releasing heat, and is very suitable for application in the field of battery thermal management. Meanwhile, the large energy storage battery cabinet is replaced by a small discrete outdoor battery box, and the outdoor battery box can independently operate in the aspects of heat dissipation, fire protection, energy management and the like, so that the outdoor battery box has a considerable use value for field safety and daily maintenance.

Patent application CN206340590U the utility model discloses a lithium ion battery box with thermal break function, it includes the box, and the box comprises interior box and outer box, is equipped with the heat-sink shell including between box and the outer box, is equipped with the relief valve on the casing of box outside, is equipped with the heat absorbing material on the casing of box outside and adds the mouth. When the battery in the box body is out of control due to heat, the battery releases heat through the internal filling material, and therefore the purpose of improving the safety performance of the lithium ion battery module and the system is achieved. The patent only uses the phase-change material as a cooling means for controlling the thermal runaway of the battery, and fails to propose how to release the heat energy absorbed by the phase-change material and how to treat the gas sprayed during the explosion venting of the battery.

The solutions of patent applications CN205810969U and CN208723043U are that the battery is directly contacted with the phase change material, and the latent heat of the phase change material is used to absorb the heat of the battery. The battery is only partially fixed simply, the battery with a certain pressing force requirement cannot be used when being installed, and the scheme of how to treat gas sprayed out when the battery is vented and exploded cannot be provided.

The present application thus proposes a discrete passive heat dissipation battery box that is distinguished from conventional cooling of batteries using phase change materials. The battery can independently operate in the aspects of heat dissipation, fire protection, energy management and the like, can absorb the heat of the battery while the battery works, and can release the heat through natural heat dissipation; when the battery is installed, a certain clamping force can be applied to the whole battery to limit the battery from bulging; when the battery is out of control thermally, the discharged gas is collected through the explosion venting channel, so that the requirements of safety, energy conservation and high efficiency of the battery in the battery box are met.

Disclosure of Invention

This application for solving above-mentioned problem provides a passive heat dissipation battery box, has solved the shortcoming that existing equipment exists.

In order to solve the above problems, the present application proposes the following technical solutions:

the embodiment of the application provides a passive heat dissipation battery box, which comprises a box body, wherein the box body comprises a base, an inner box body and an outer box body which are arranged on the base, and a phase change material is arranged between the inner box body and the outer box body; and a baffle plate is arranged between the two battery units, and an explosion venting channel is arranged between the battery units and the baffle plate. The battery unit includes a plurality of unit batteries. And a compressible heat conduction gasket is arranged between the battery pack and the inner wall of the inner box body.

Furthermore, a plurality of clapboards for placing the single batteries are arranged in the inner box body.

Further, the inner box body comprises a clamping plate and an end plate;

the clamping plate is connected with the partition plate through a bolt.

Furthermore, a roller for moving the box body is arranged below the base.

Further, the device comprises a connection control unit arranged above or below the box body; the connection control unit comprises a connection busbar, an external plug, a BMS and an inverter module, wherein the connection busbar is used for connecting external power and signal cables of the battery box. Further, a gas collection unit is arranged above or below the connection control unit;

the gas collecting unit comprises an adsorption layer and a collecting layer which are used for collecting gas sprayed out when the battery is exploded.

The beneficial effect of this application:

the application discloses passive heat dissipation battery box, the box structure of materials such as solid phase change materials such as this battery box usable paraffin and do benefit to radiating aluminum alloy, under the condition that need not provide extra cooling apparatus, can absorb and release the heat that electric core in the battery box produced when charging and discharging for electric core body temperature control is within certain limit. This application is favorable to electric core series connection design, is favorable to the heat dissipation of battery, let out the gaseous release of exploding and collect, is favorable to the modularized design, the application of battery box, is favorable to the modularized design of energy storage system.

Drawings

For ease of illustration, the present application is described in detail with reference to the following detailed description and accompanying drawings.

Fig. 1 is a schematic view of the overall structure of a battery box according to the present application.

Fig. 2 is an exploded view of the battery box according to the present application.

Fig. 3 is a schematic diagram of a side plate structure of a battery box outer case body according to the present application.

Fig. 4 is a schematic cross-sectional view of a battery case of the present application.

Fig. 5 is a schematic view of the battery pack of the present application and a fixing structure thereof.

Description of reference numerals: 1-a box body; 2-connecting a control unit; 3-a gas collection unit; 11-side plate; 112-mounting bars; 113-a sealing strip; 12-a panel; 13-a splint; 14-an end plate; 15-a base; 16-a caster wheel; 17-a baffle; 18-channels; 19-a separator; 4-a battery pack; 5-heat conducting gasket; 6-Paraffin wax.

Detailed Description

The technical solution of the present application will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 3, the box 1, the connection control unit 2, the gas collection unit 3, and the like are formed. Wherein the connection control unit 2 can be positioned above the battery box 1 and also can be arranged below the battery box 1.

Specifically, the box includes outer box, interior box, base. Wherein the content of the first and second substances,

the outer box comprises panel 12 and the curb plate 11 of setting in both sides in the front and back that sets up, passes through mounting bar 112 and bolt fixed connection between each panel and the base 15, is equipped with sealing strip 113 between each panel and the mounting bar to play sealed effect, prevent that the paraffin of inside filling from outwards leaking.

The inner box body also comprises front and rear end plates 14 and battery clamping plates 13 arranged on two sides, the end plates 14 and the battery clamping plates 13 are fixedly connected through screws, and sealing strips are arranged between the end plates and the battery clamping plates to prevent paraffin from permeating into the inner box body.

The inner box body and the outer box body are fixed on the same base 15 through bolts, the tops of the inner box body and the outer box body are connected together through a top plate or an upper layer frame assembly, and rigid connecting pieces can be adopted between the two layers of barrel bodies to be connected together so as to play a role in fixing and strengthening.

Similarly, sealing strips are arranged between the inner box body and the base and between the outer box body and the base to play a role in sealing.

In order to improve the heat dissipation efficiency of the battery box, the box body materials of the inner box body and the outer box body are aluminum alloy materials, so that the heat dissipation of the battery box is facilitated.

Furthermore, the inner box body and the outer box body can be in a metal plate splicing mode, and an aluminum extruded section with radiating teeth can also be adopted.

Furthermore, the inner layer cylinder and the outer layer cylinder can adopt anode treatment and other modes to enhance the radiation heat exchange capacity of the battery box.

In order to facilitate the movement of the battery box, the base is provided with a movable caster 16.

Furthermore, the battery box is provided with a plurality of connecting and fixing pieces, the base is provided with mounting holes, the battery box can be fixed on the ground and other fixed objects by using different connecting and fixing pieces, and meanwhile, different battery boxes can be connected.

As shown in fig. 4, a battery pack 4 is placed inside the inner case, and a compressible heat conductive gasket 5 is disposed between the battery pack and the inner wall of the inner case to fill an assembly gap caused by unevenness of the surface of the battery, thereby improving heat conductive efficiency. Phase-change material paraffin 6 is filled between the outer boxes of the inner box body, and as the density of the paraffin 6 in a solid state is different from that in a liquid state, a certain space needs to be reserved during refilling, so that the paraffin is ensured to have an expanded space. The heat generated by the battery during charging and discharging is conducted to the paraffin 6 through the heat conducting gasket 5 and the inner box body. Since the latent heat of the paraffin 6 at the phase transition temperature point is very large, a large amount of heat can be absorbed while the temperature of the paraffin itself is maintained at the temperature of the phase transition point, and the temperature of the battery pack 4 itself is controlled to be around the phase transition temperature point of the paraffin 6 by using the point. Meanwhile, the radiation heat transmitted to the paraffin 6 from the outside through the outer box body is absorbed by the latent heat of the paraffin. When the temperature is lower in the morning and evening, the heat generated by the batteries absorbed by the paraffin and the external radiation heat are dissipated through the surfaces of the outer box panel 12 and the outer box side plate assembly 11 by utilizing the principle of natural heat dissipation, so that the heat dissipation system of the whole battery box can be ensured to be in a stable circulation state.

As shown in fig. 5, the battery pack includes two rows of battery cells arranged in parallel, the electrodes of the two rows of battery cells are arranged oppositely, the batteries are connected through a connecting row, and a channel 18 between the two rows of batteries is a wiring space and is also a gas explosion venting channel.

A baffle plate 17 is arranged between the two rows of batteries to prevent the explosion venting gas from influencing the opposite batteries. Corresponding partition plates 19 are arranged in the inner box body according to the number of the batteries, the batteries are arranged above the partition plates 19, the partition plates 19 are connected with the battery clamping plates 13 through bolts, when the bolts connected with the partition plates 19 are tightened on the outer sides of the battery clamping plates 13, the battery pack 4 can be tightly clamped between the two battery clamping plates 13, and the pressing installation requirements of the batteries are met.

The battery box also comprises a gas collecting unit, a connection control unit and the like which are arranged above or below the battery cylinder. The gas collecting unit comprises an adsorption layer and a collecting layer and is used for collecting gas sprayed out when the battery is vented and exploded. The connection control unit comprises a connection busbar, an external plug, a BMS, an inverter module and other devices inside and is used for connecting external power and signal cables of the battery box.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present application and not for limiting the same, and although the present application is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.

It will be appreciated by those of ordinary skill in the art that the present application can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes that come within the scope of or equivalence to the scope of this application are intended to be embraced therein.