CN112787012B

CN112787012B - Battery rack, operation method thereof and energy storage power station provided with battery rack

Info

Publication number: CN112787012B
Application number: CN201911092865.4A
Authority: CN
Inventors: 秦志健; 何颖源; 陈永翀; 张彬; 侯洋; 张添奥
Original assignee: Beijing Hawaga Power Storage Technology Co ltd
Current assignee: Haofengguang Energy storage (Chengdu) Co.,Ltd.
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2022-05-27
Anticipated expiration: 2039-11-11
Also published as: CN112787012A

Abstract

The invention provides a battery rack capable of maintaining and protecting batteries. The battery holder includes: the battery charging device comprises an injection upright post and a discharge upright post, wherein the injection upright post comprises a hollow injection upright post main body and a plurality of first branch pipes, the first branch pipes are connected to a first injection and discharge port of a battery, the discharge upright post comprises a hollow discharge upright post main body and a plurality of second branch pipes, and the second branch pipes are connected to a second injection and discharge port of the battery; a plurality of shelves capable of being mounted to the pillar. In the energy storage system capable of replacing the electrolyte on line, a large number of external pipelines can be reduced by arranging the stand columns of the battery rack in the electrolyte replacement channel, so that the pipeline arrangement is regular and the operations such as installation, transportation, replacement, maintenance and the like are convenient, and the safety is also greatly improved. In addition, the invention also provides an operation method of the battery rack and a container energy storage power station provided with the battery rack.

Description

Battery rack, operation method thereof and energy storage power station provided with battery rack

Technical Field

The invention relates to the field of lithium batteries, in particular to a battery rack and a container energy storage power station which are used for maintaining and protecting a plurality of batteries.

Background

In recent years, with the increasing demand for energy, new energy sources such as wind energy and solar energy are increasing. However, the generation and use of these energy sources are often separated in time and space, and the stored energy is the key to solve the problem. At present, the main form of the energy storage system is container energy storage, and the core of the container energy storage is an energy storage battery. In the working process of the energy storage battery, electrolyte can be lost and impurities are generated, so that the service life of the energy storage battery is seriously influenced. Therefore, a container energy storage system capable of replacing liquid and regenerating is needed, electrolyte can be replaced on line for the liquid-replaceable energy storage battery, the service life of the energy storage battery is prolonged, and the operation cost of the energy storage system is reduced.

The battery rack is used for placing the battery boxes, the battery boxes are electrically connected on the battery rack, and the battery racks form a charging and discharging system for energy storage of the container. The existing battery rack is designed aiming at the traditional energy storage battery without the liquid changing capability, and does not have a liquid changing structure matched with a liquid-changeable energy storage battery, if the liquid changing function is to be realized, a plurality of pipelines need to be erected outside the battery rack, so that the battery rack is inconvenient and attractive, and has certain potential safety hazards.

Disclosure of Invention

In view of the above problems, the present invention provides a battery rack for a plurality of liquid-replaceable energy storage batteries, which is capable of performing battery maintenance and safety protection, and which can satisfy the maintenance and regeneration operations of the liquid-replaceable batteries and provide effective guarantee for the safety of the batteries and the energy storage system. The battery rack is provided with a shelf for placing the battery, and is also provided with an injection upright post and a discharge upright post which can be used for injecting and discharging fluid, so that a fluid changing passage is provided for liquid injection, fluid changing and the like of the multiple batteries in the energy storage system. In the energy storage system capable of replacing the electrolyte on line, a large number of external pipelines can be reduced by arranging the stand columns of the battery rack in the electrolyte replacement channel, so that the pipeline arrangement is regular and the operations such as installation, transportation, replacement, maintenance and the like are convenient, and the safety is also greatly improved. In addition, during the operation of the energy storage system, the safety agent is filled in the injection upright post, so that measures can be taken quickly when potential safety hazards occur to the battery, and serious accidents such as battery combustion and explosion are avoided. In addition, the invention also provides an operation method of the battery rack and a container energy storage power station provided with the battery rack.

The technical scheme provided by the invention is as follows:

according to the invention, a battery holder for battery maintenance and safety protection for a plurality of batteries is provided, each battery being provided with a first and a second drain port for fluid drain. The battery holder includes: the vertical column comprises an injection vertical column body and a plurality of first branch pipes, the first branch pipes are connected to first injection and discharge ports of the battery, the discharge vertical column comprises a hollow discharge vertical column body and a plurality of second branch pipes, the second branch pipes are connected to second injection and discharge ports of the battery, and the second branch pipes extend outwards from the discharge vertical column body in the vertical direction of the discharge vertical column body; a plurality of shelves capable of being mounted to the pillar. Specifically, the battery rack comprises a plurality of shelves, and the shelves can be arranged on the upright posts of the battery rack along the vertical direction of the battery rack. The columns of the battery rack include an injection column and a discharge column. The number of the injection columns can be one or more, the plurality of injection columns can be communicated through a transverse fluid pipeline, each injection column comprises a hollow injection column main body and a plurality of first branch pipes, wherein the hollow injection column main body can provide a cavity for fluid to flow, and the plurality of first branch pipes can be communicated with the cavity, so that the fluid flowing in the cavity flows out in a split mode through the plurality of first branch pipes; or wherein the hollow injection column body may comprise an injection fluid conduit therein, in which case the plurality of first branches may be in communication with the injection fluid conduit such that fluid flowing within the injection fluid conduit is diverted out via the plurality of first branches. Likewise, the number of the discharge pillars may be one or more, a plurality of the discharge pillars may be communicated through a transverse fluid pipeline, each discharge pillar includes a hollow discharge pillar body and a plurality of second branch pipes, wherein the hollow discharge pillar body may provide a cavity for fluid to flow, and the plurality of second branch pipes may be communicated with the cavity, so that the fluid in the plurality of second branch pipes flows out through the cavity in a confluence manner; or wherein a drain fluid conduit may be included within the hollow drain post body, in which case the plurality of second legs may be in communication with the drain fluid conduit such that fluid within the plurality of second legs is confluent out through the drain fluid conduit. In addition, the posts may also include support posts, which may be hollow or solid structures, primarily for securing stability of the battery rack and for mounting shelves. The number of injection columns, discharge columns and support columns can be set according to actual needs. The first branch pipes are arranged along the vertical direction of the injection upright post, and the positions and the number of the first branch pipes can correspond to the laying positions of the batteries and the number of the batteries; the second branch pipes are arranged along the vertical direction of the discharge upright, and the positions and the number of the second branch pipes can correspond to the resting positions of the plurality of batteries and the number of the batteries. It should be noted here that the number of the first and second branches may also be redundant, so that when the number of the batteries resting on each battery rack changes due to the change of the size (especially the height) of the batteries, some of the first and second branches may be used to connect with the batteries, thereby being capable of adapting to the requirements of different battery sizes. And a first injection and discharge port valve and a second injection and discharge port valve can be respectively arranged on the first injection and discharge port and the second injection and discharge port. A first valve may be provided in each first branch, and a control valve may be provided in each second branch.

When the hollow injection upright post main body provides a cavity for fluid to flow, the first branch pipe and the injection upright post main body can be integrally formed or the first branch pipe can be arranged on the injection upright post main body in a threaded connection, welding, bonding and other modes, and the first branch pipe is communicated with the injection upright post main body in a fluid mode. Likewise, in the discharge column, the second branch pipe may be integrally formed with the discharge column main body or the second branch pipe may be attached to the discharge column main body by screwing, welding, bonding, or the like, the second branch pipe being in fluid communication with the discharge column main body. The injection column body of the injection column and the discharge column body of the discharge column may be made of pipes or profiles of a metallic material, such as steel, aluminium or a non-metallic material, such as polyethylene, polypropylene. The material of the first branch pipe of the injection upright and the second branch pipe of the discharge upright can be rigid material or flexible material, and can be steel pipe, steel-plastic composite pipe, aluminum-plastic composite pipe, polyethylene pipe, polypropylene pipe, polytetrafluoroethylene pipe and the like. When the hollow injection upright post main body is internally provided with an injection fluid pipeline, the injection upright post main body can be provided with a plurality of first through holes, the first branch pipe is communicated with the injection fluid pipeline through the first through holes, and the first branch pipe and the injection fluid pipeline can be integrally formed or the first branch pipe can be arranged on the injection fluid pipeline. Likewise, a discharge fluid conduit is provided in the hollow discharge column body and a plurality of second through holes are provided in the discharge column body, a second branch pipe is in fluid communication with the discharge fluid conduit via the second through holes, the second branch pipe and the discharge fluid conduit may be integrally formed or the second branch pipe may be mounted to the discharge fluid conduit. The material of the injection fluid pipeline, the discharge fluid pipeline, the first branch pipe and the second branch pipe can be rigid material or flexible material, and can be steel pipe, steel-plastic composite pipe, aluminum-plastic composite pipe, polyethylene pipe, polypropylene pipe, polytetrafluoroethylene pipe and the like.

The injection and exhaust legs may each include a single or multiple cavities therein, or the injection and exhaust legs may each include a single or multiple fluid conduits therein. Particularly, for the injection upright post, when a plurality of cavities or injection fluid pipelines are arranged in the injection upright post, the injection of various fluids can be more conveniently realized, so that the operations of liquid changing, cleaning, safety agent injection and the like of the battery can be more easily realized. According to an embodiment of the present invention, the hollow injection column body includes an electrolyte cavity for flowing electrolyte and a safety agent cavity for flowing safety agent, the first branch pipe includes a first electrolyte branch pipe for flowing electrolyte, a first safety agent branch pipe for flowing safety agent and a first manifold pipe, the first branch pipe is further provided with a first valve, the electrolyte cavity is communicated with the first electrolyte branch pipe, and the safety agent cavity is communicated with the first safety agent branch pipe, the first electrolyte branch pipe and the first safety agent branch pipe are connected to the first manifold pipe via the first valve, and the first manifold pipe is connected to the first injection port of the battery. That is to say, be equipped with a plurality of cavitys that are used for different fluid respectively in the injection stand, for example be used for electrolyte and safener, the electrolyte cavity that is used for the electrolyte communicates with the first electrolyte branch pipe that is used for the electrolyte, and the safener cavity that is used for the safener communicates with the first safener branch pipe that is used for the safener, can be full of electrolyte in electrolyte cavity and the first electrolyte branch pipe in order to use at any time and can be full of the safener in safener cavity and the first safener branch pipe in order to use at any time. The first electrolyte branch and the first safener branch can be switched via a first valve, so that the electrolyte in the first electrolyte branch enters the cell via the first collecting pipe or the safener in the first safener branch enters the cell via the first collecting pipe. Therefore, when the battery is used for changing the liquid, the battery can be changed only by communicating the first electrolyte branch pipe with the first collecting pipe through the first valve, and the first valve is in a closed state after the liquid is changed; when potential safety hazards appear in the battery, the safety agent can be injected into the battery only by communicating the first safety agent branch pipe with the first collecting pipe through the first valve. According to another embodiment of the present invention, the injection fluid pipeline includes an electrolyte injection fluid pipeline for circulating electrolyte and a safety agent injection fluid pipeline for circulating a safety agent, the first branch pipe includes a first electrolyte branch pipe for circulating electrolyte, a first safety agent branch pipe for circulating a safety agent and a first manifold pipe, a first valve is further disposed on the first branch pipe, the electrolyte injection fluid pipeline is communicated with the first electrolyte branch pipe, and the safety agent injection fluid pipeline is communicated with the first safety agent branch pipe, the first electrolyte branch pipe and the first safety agent branch pipe are connected with the first manifold pipe via the first valve, and the first manifold pipe is connected to the first injection/exhaust port. That is, a plurality of fluid pipelines for different fluids, such as an electrolyte and a safener, are arranged in the injection column, the electrolyte injection fluid pipeline for the electrolyte is communicated with the first electrolyte branch pipe for the electrolyte, the safener injection fluid pipeline for the safener is communicated with the first safener branch pipe for the safener, the electrolyte injection fluid pipeline and the first electrolyte branch pipe can be filled with the electrolyte for use at any time, and the safener injection fluid pipeline and the first safener branch pipe can be filled with the safener for use at any time. The first electrolyte branch and the first safener branch can be switched via a first valve, so that the electrolyte in the first electrolyte branch enters the cell via the first collecting pipe or the safener in the first safener branch enters the cell via the first collecting pipe. Therefore, when the battery is used for changing the liquid, the battery can be changed only by communicating the first electrolyte branch pipe with the first collecting pipe through the first valve, and the first valve is in a closed state after the liquid is changed; when potential safety hazards appear in the battery, the safety agent can be injected into the battery only by communicating the first safety agent branch pipe with the first collecting pipe through the first valve. In the above embodiments only two chambers or two injection fluid lines have been described, it being noted that more than two chambers or more than two injection fluid lines may be included in the injection column, for example also a rinsing agent chamber for rinsing agent or a rinsing agent injection fluid line, etc.

The battery holder according to the present invention can also be used for atmosphere detection of batteries. The battery rack comprises a gas detection device, a gas main pipe and a plurality of gas branch pipes, wherein each gas branch pipe is connected to the first branch pipe, the plurality of gas branch pipes are respectively communicated with the gas main pipe, and the gas main pipe is connected to the gas detection device so as to detect the atmosphere in the battery. Two exemplary embodiments are illustrated below. The battery holder may include a gas detection device, a gas manifold, a plurality of second valves, and a plurality of gas branch pipes, each of which is connected to the first branch pipe via the second valve, the plurality of gas branch pipes being respectively communicated to the gas manifold, the gas manifold being connected to the gas detection device so as to detect an atmosphere within the battery. When the first valve on the first branch pipe is opened, the battery is subjected to operations of filling, replacing and the like, and the second valve is closed. When the first valve on the first branch pipe is closed, the operations of battery liquid injection, liquid replacement and the like are finished, the second valve is opened, so that gas in the battery enters the gas main pipe through the second valve and the gas branch pipe, and then the gas in the gas main pipe is detected in real time through the gas detection device. When the gas detection device detects that gas in the gas main pipe is abnormal, the first valve on the first branch pipe is opened, and the safety agent is rapidly injected into the battery so as to prevent the battery from further burning or exploding. Alternatively, the battery holder may include a gas detection device, a gas manifold, and a plurality of gas branch pipes, each of the gas branch pipes being connected to a first valve provided on the first branch pipe, the plurality of gas branch pipes being respectively communicated with the gas manifold, the gas manifold being connected to the gas detection device so as to detect an atmosphere in the battery. When the battery is injected with liquid, changed liquid and the like, the first electrolyte branch pipe is communicated with the first injection and discharge port of the battery by controlling the first valve, so that the operations of injecting liquid, changing liquid and the like are performed. When operations such as battery liquid injection, liquid changing and the like are finished, the first electrolyte branch pipe is disconnected with the first injection and discharge port of the battery by controlling the first valve, the gas branch pipe is communicated with the first injection and discharge port of the battery by controlling the first valve, so that gas in the battery enters the gas main pipe through the first valve and the gas branch pipe, and then the gas in the gas main pipe is detected in real time by the gas detection device. When the gas detection device detects that gas in the gas main pipe is abnormal, the first valve is controlled to enable the first safety agent branch pipe to be communicated with the first injection and exhaust port of the battery, and the safety agent is rapidly injected into the battery to avoid further combustion or explosion of the battery. The first valve here can be, for example, a three-position four-way valve.

The safener may be: one or more of carbon dioxide, nitrogen, argon, helium, sulfur dioxide, heptafluoropropane, dodecafluoro-2-methyl-3-pentanone (Novec1230), and the like; or one or more of alkyl phosphate, aromatic phosphate, phosphite, phosphazene, phosphorus-halogen organic compound, tricresyl phosphate, dimethyl methyl phosphate, hexamethylphosphoramide, tetrabromobisphenol, phosphaphenanthrene derivative, nitrogen phosphorus alkene additive and phosphazene compound; or water, silicone oil, superfine dry powder extinguishing agent, foam extinguishing agent or aerosol extinguishing agent, etc. Among these, the safeners of alkylphosphates may include: trimethyl phosphate, triethyl phosphate, tributyl phosphate, tetraisopropyl methylenediphosphonate, and the like. Safeners of aromatic phosphates may include: triphenyl phosphate, dimethyl isopropyl phenyl phosphate, cresyl diphenyl phosphate, and the like. Safeners of the phosphite type may include: trimethyl phosphite, triethyl phosphite, tributyl phosphite, triphenyl phosphite, and the like. Safeners for phosphazenes may include: hexamethylphosphazene, cyclic phosphazene trimer. The phosphorus-halogen organic compounds may include: tris (. beta. -chloroethyl) phosphate, trifluoroethoxy phosphate, bis (2,2, 2-trifluoroethyl) methyl phosphate, (2,2, 2-trifluoroethyl) diethyl phosphate, tris (2,2, 2-trifluoroethyl) phosphite, tris (2-chloropropyl) phosphate, fluoroalkoxy phosphate and the like.

In order to further ensure the safety of the pipelines exposed outside and prevent accidental scraping and falling, the battery rack can also be provided with two guard plates. The two guard plates are arranged on two sides of the battery frame, and the guard plates extend forwards from the front surface of the battery, provided with the first injection and discharge port and the second injection and discharge port, by a distance which is larger than the distance by which the first branch pipe and the second branch pipe extend forwards. Specifically, considering the surface of the battery provided with the first and second injection ports as the front surface of the battery, the guard plate extends forward from the side of the battery holder beyond the first and second branch pipes, thereby ensuring that the first and second branch pipes are located inside the guard plate at the side of the battery holder. It should be noted that the directional terms front, back, left, right, etc. are used herein for clarity only and are not meant to be limiting in any way. Preferably, the protective plate has a bent structure including a side surface and a bent portion, the side surface of the protective plate is mounted on the side surface of the battery holder, and the bent portion of the protective plate at least partially extends to cover the first branch pipe or the second branch pipe, so that the safety of the pipeline can be further ensured. The width of the bent portion may be smaller than the width of the post, or the bent portion may be rotated around a portion of the side so as not to interfere with the placement and removal of the battery. In another embodiment, the width (i.e., side width) of the battery rack is greater than the width (i.e., side width) of the batteries, and the first and second branch tubes extend forward from the front surfaces of the batteries where the first and second injection and drain ports are located and do not extend beyond the injection and drain stud bodies of the battery rack on the front side. That is, the width of the battery holder is wider than the width of the battery when viewed from the side, and therefore, the first branch pipe and the second branch pipe do not need to extend beyond the front pillar body and be connected to the front surface of the front pillar body, but there is enough space between the battery and the pillar so that the first branch pipe and the second branch pipe can be connected to the inside surface of the front pillar body close to the battery, so that the first branch pipe and the second branch pipe can be directly protected by the battery holder.

The shelves of the battery rack may be mounted directly to the posts. The battery rack may also be provided with cross members which are connected to the uprights and the shelves are then mounted on the cross members. For example, slots are formed on the columns or the beams, the shelf can be inserted into the slots, and the height of the space for placing the battery can be adjusted by inserting the shelf into different slots; alternatively, threaded holes are provided on the columns or the beams, and the height of the space for accommodating the battery can be adjusted by fixing the shelf to different threaded holes with screws. Therefore, the battery rack can be used more flexibly and can be suitable for batteries with different sizes. The manner of mounting the shelf is not limited to the above. In addition, the cross beam can also be of a hollow structure, and a cavity or a pipeline is arranged in the cross beam, so that fluid transmission between the two stand columns connected with the cross beam is realized.

The battery rack may further include an outer cabinet, and the battery rack may be placed in a separate outer cabinet or installed as an integrated structure with the outer cabinet. For example, the four sides of the battery rack are provided with the plates or doors, the battery rack is used as a framework of the cabinet, and the battery rack can be manufactured into a battery cabinet, so that the battery and the pipeline in the cabinet can be protected.

The invention also provides a container energy storage power station, wherein a plurality of battery racks are arranged in the container of the container energy storage power station.

The invention also provides an operation method of the battery rack capable of maintaining and protecting the battery. The operation method includes a battery filling method in which, in a first step, gas in the battery is exhausted via an exhaust column of a battery holder and an electrolyte is injected into the battery via an injection column; secondly, under the condition that a single cavity or a single injection fluid pipeline is arranged in the injection upright post, after the electrolyte is injected, the communication between the injection upright post and a first injection and discharge port of the battery is cut off by controlling a first valve arranged on a first branch pipe, the electrolyte injected into the upright post is extracted, and the safety agent is injected into the injection upright post; under the condition that a plurality of cavities or a plurality of injection fluid pipelines are arranged in the injection upright post, the communication between the first electrolyte branch pipe for injecting electrolyte and the first collecting pipe is cut off by controlling the first valve arranged on the first branch pipe, and the first safener branch pipe for injecting the safener can be communicated with the first collecting pipe by controlling the first valve, wherein the first safener branch pipe is not communicated at the moment, but can be immediately communicated when potential safety hazards occur. The operation method further comprises a battery liquid changing method, wherein in the battery liquid changing method, in the first step, under the condition that a single cavity or a single injection fluid pipeline is arranged in the injection upright post, the safety agent injected into the upright post is extracted and the electrolyte is injected into the injection upright post; under the condition that a plurality of cavities or a plurality of injection fluid pipelines are arranged in the injection upright post, a first electrolyte branch pipe for injecting electrolyte is communicated with a first collecting pipe by controlling a first valve arranged on a first branch pipe; secondly, discharging waste liquid in the battery through a discharge upright post of the battery rack and injecting new electrolyte into the battery through an injection upright post; thirdly, after liquid is changed, under the condition that a single cavity or a single injection fluid pipeline is arranged in the injection upright post, the communication between the injection upright post and a first injection and discharge port of the battery is cut off by controlling a first valve arranged on a first branch pipe after the electrolyte is injected, the electrolyte injected into the upright post is extracted, and a safety agent is injected into the injection upright post; under the condition that a plurality of cavities or a plurality of injection fluid pipelines are arranged in the injection upright post, the communication between the first electrolyte branch pipe for injecting electrolyte and the first collecting pipe is cut off by controlling the first valve arranged on the first branch pipe, and the first safener branch pipe for injecting the safener can be communicated with the first collecting pipe by controlling the first valve, wherein the first safener branch pipe is not communicated at the moment, but can be immediately communicated when potential safety hazards occur. After the liquid injection process or the liquid replacement process is finished, the first valve arranged on the first branch pipe or the second valve arranged on the gas branch pipe is controlled to enable the gas branch pipe to be communicated with the interior of the battery, so that gas in the battery can enter the gas detection device through the gas branch pipe and the gas main pipe to monitor the gas in the battery. That is, where a single cavity or a single injection fluid line is provided within the injection column, the injection column is used for both injecting electrolyte and other fluids such as safeners. The injection upright post with the structure has the advantages of simple structure, simple and convenient processing and lower cost. In the process of liquid injection and liquid replacement, the injection upright post is used for injecting electrolyte into the battery, and after the liquid injection and liquid replacement are finished, the electrolyte injected into the upright post is extracted and filled with other fluids such as a safety agent. When the potential safety hazard generated in the battery is detected, the safety agent can be rapidly injected into the battery by controlling the first valve, so that the situation is prevented from further worsening. Under the condition that a plurality of cavities or a plurality of injection fluid pipelines are arranged in the injection upright post, the first electrolyte branch pipe and the battery can be controlled to be communicated or the first safety agent branch pipe and the battery can be controlled to be communicated by controlling the first valve, and the structure can enable the operation to be simpler and more convenient.

The invention has the advantages that:

1) the battery rack can reduce a large number of external pipelines, so that the battery system is simpler and more convenient to install, transport and maintain, and the safety of the system is greatly improved;

2) the protection plates are arranged on the two sides of the battery rack, so that the pipeline can be protected from being damaged by mechanical external force;

3) the gas detection system and the battery rack are integrated into a whole, so that the gas composition in the energy storage battery can be conveniently monitored in real time when the container energy storage system works, once the gas composition is abnormal, the battery protection system can be started immediately, and a safety agent is injected into the battery, so that the safety of the whole container energy storage system is obviously enhanced;

4) the shelves of each layer of the battery rack are movable and can be adjusted according to the heights of different batteries, so that the adaptability of the battery rack is enhanced.

Drawings

Fig. 1 is a schematic view of a battery stand (with batteries in rest) according to a first embodiment of the present invention;

fig. 2 is a schematic view of a battery holder (without batteries resting) according to a first embodiment of the invention;

fig. 3(a) and 3(b) are schematic views of a battery holder according to a second embodiment of the present invention, in which fig. 3(a) is a perspective view and fig. 3(b) is a plan view;

fig. 4(a) and 4(b) are schematic views of a battery holder according to a third embodiment of the present invention, in which fig. 4(a) is a perspective view and fig. 4(b) is a plan view;

fig. 5(a) and 5(b) are schematic views of a battery holder according to a fourth embodiment of the present invention, in which fig. 5(a) is a perspective view and fig. 5(b) is a partially enlarged view;

fig. 6(a), 6(b), 6(c) and 6(d) are schematic views of an injection column according to the present invention, wherein fig. 6(a) and 6(b) show perspective and cross-sectional views of a multi-lumen embodiment, and fig. 6(c) and 6(d) show perspective and cross-sectional views of a multi-injection fluid line embodiment.

List of reference numerals

1-Battery

101-first injection and exhaust port

102-second infusion Port

2-injection column

201-first branch pipe

201 a-first electrolyte manifold

201 b-first safener manifold

201 c-first collector pipe

202-injection column body

202 a-electrolyte chamber

202 b-safener Cavity

202 c-electrolyte injection fluid line

202 d-safener injection fluid line

3-discharge column

301-second branch pipe

302-discharge column body

4-shelf

5-protective sheet

6-first valve

7-gas detection device

8-gas header pipe

9-second valve

10-gas manifold

Detailed Description

The invention will be further explained by embodiments in conjunction with the drawings.

Fig. 1 is a schematic view of a battery holder (on which a battery is placed) according to a first embodiment of the present invention, and fig. 2 is a schematic view of a battery holder (on which a battery is not placed) according to a first embodiment of the present invention. The battery 1 is provided with a first ejection port 101 and a second ejection port 102 for fluid ejection, and the side of the battery 1 provided with the ejection ports can be regarded as the front side of the battery and can also be regarded as the front side of the cradle. The battery stand comprises a plurality of uprights and a plurality of shelves for resting the batteries, wherein one or more of the uprights can be provided as an injection upright for injecting a fluid and one or more of the uprights can be provided as a discharge upright for discharging the fluid. As shown in fig. 1 and 2, for example, one column located on the front side of the rack is provided as an injection column 2, and the other column located on the front side of the rack is provided as a discharge column 3. A portion of the injection column, preferably the top portion, is connected to an external injection fluid line and a portion of the discharge column, preferably the bottom portion, is connected to an external discharge fluid line. The injection column 2 includes a hollow injection column main body 202 and a plurality of first branch pipes 201 extending outward from the injection column main body 202 in the vertical direction of the injection column main body, the first branch pipes 201 being connected to the first injection and exhaust ports 101 of the battery. The drain post includes a hollow drain post body 302 and a plurality of second branch pipes 301 extending outward from the drain post body 302 in the vertical direction of the drain post body, the second branch pipes 301 being connected to the second drain ports 102 of the batteries. The shelves 4 can be installed on the columns in a screw connection or slot connection mode, and the positions of the shelves 4 can be adjusted by arranging redundant screw connections or slots on the battery rack, so that the distance between the shelves 4 can be adjusted according to the height of the batteries. When the position of the shelf 4 varies with the size of the battery, the first branch pipe 201 of the injection column and the second branch pipe 301 of the discharge column may be provided as rotatable rigid pipes, or may be provided as entirely flexible pipes or partially flexible pipes, so that the ends of the first branch pipe 201 and the second branch pipe 301 connected to the battery may be appropriately adjusted in position according to the position of the injection and discharge ports of the battery.

When a single cavity or a single injection fluid pipeline is arranged in the injection column, in the injection process, gas in the battery is pumped out through each second branch pipe 301 and the discharge column main body 302, and the electrolyte enters the injection column main body 202 through the external injection fluid pipeline and then enters the plurality of batteries through each first branch pipe 201. After the injection is completed, the first branch pipe 201 is disconnected from the battery by the first valve provided on the first branch pipe or by the valve provided at the first injection/discharge port, and then the electrolyte remaining in the injection column main body 202 and the first branch pipe 201 is extracted and the safener is flowed into the injection column main body 202 and the first branch pipe 201 through the external fluid injection pipe. When the potential safety hazard is detected, the first branch pipe 201 is communicated with the battery through the first valve arranged on the first branch pipe or the valve arranged on the first injection and discharge port, so that the safety agent can be quickly injected into the battery. In the liquid changing process, the used electrolyte in the battery is pumped out through each second branch pipe 301 and the discharge column main body 302, the liquid such as ester, carbonate derivative, ether and ketone cleaning liquid enters the injection column main body 202 through the external pipeline of the injection fluid, the inside of the battery is cleaned through the first branch pipe 201 and is discharged, and then new electrolyte enters the injection column main body 202 through the external pipeline of the injection fluid and enters the plurality of batteries through each first branch pipe 201. After the liquid is changed, the first branch pipe 201 is disconnected from the battery by the first valve provided on the first branch pipe or the valve provided at the first injection/discharge port, the electrolyte remaining in the injection column main body 202 and the first branch pipe 201 is extracted, and then the safener is made to flow into the injection column main body 202 and the first branch pipe 201 through the external fluid injection pipeline. When the potential safety hazard is detected, the first branch pipe 201 is communicated with the battery through the first valve arranged on the first branch pipe or the valve arranged on the first injection and discharge port, so that the safety agent can be quickly injected into the battery.

Fig. 3(a) and 3(b) are schematic views of a battery holder according to a second embodiment of the present invention, in which fig. 3(a) is a perspective view and fig. 3(b) is a plan view. The second embodiment differs from the battery holder of the first embodiment in that in the second embodiment shown in fig. 3(a) and 3(b), the battery holder is further provided with two guards 5. The two guard plates 5 are respectively arranged on two side surfaces of the battery rack. The protector plate 5 is a substantially L-shaped bent structure, one portion (i.e., a side surface) of which is located at a side surface of the battery and the other portion (i.e., a bent portion) is bent toward a middle portion of the battery holder, thereby forming wrap-around protection for the first branch pipe 201 and the second branch pipe 301 extending forward from the front side of the battery and the injection column main body.

Fig. 4(a) and 4(b) are schematic views of a battery holder according to a third embodiment of the present invention, in which fig. 4(a) is a perspective view and fig. 4(b) is a plan view. The third embodiment is different from the battery holder of the first embodiment in that, in the third embodiment shown in fig. 4(a) and 4(b), the width D of the battery holder is larger than the width D of the battery, one end of the first branch pipe 201 and the second branch pipe 301 are connected to the charging and discharging port of the battery, the other end of the first branch pipe 201 and the second branch pipe 301 are located on opposite sides of the charging and discharging

stud body

202 and 302, respectively, and the first branch pipe 201 and the second branch pipe 301 extend forward from the front surface of the battery not more than the front surface of the charging and discharging

stud body

202 and 302 located on the front side of the battery holder, so that the first branch pipe and the second branch pipe can be prevented from falling off or being damaged due to an accidental collision or the like.

Fig. 5(a) and 5(b) are schematic views of a battery holder according to a fourth embodiment of the present invention, in which fig. 5(a) is a perspective view and fig. 5(b) is a partially enlarged view. In this embodiment, an electrolyte chamber and a safener chamber are provided within the injection post body 202. The electrolyte chamber is communicated with an external pipeline for conveying electrolyte and is communicated with each first electrolyte branch pipe 201a, and the safener chamber is communicated with an external pipeline for conveying safener and is communicated with each first safener branch pipe 201 b. The first branch pipe here includes a first electrolyte branch pipe 201a, a first safener branch pipe 201b, and a first manifold 201c, the first electrolyte branch pipe 201a and the first safener branch pipe 201b are connected to the first manifold 201c via a first valve 6, and the first manifold 201c is connected to a first discharge port of the battery. In addition, in this embodiment, the battery holder further includes a gas detection device 7, a gas manifold 8, a plurality of second valves 9, and a plurality of gas branch pipes 10. Each of the gas branch pipes 10 is connected to the first branch pipe (or to the first valve) via the second valve 9, and the plurality of gas branch pipes 10 are respectively communicated to the gas header pipe 8, and the gas header pipe 8 is connected to the gas detection device 7 so as to detect the atmosphere inside the battery.

Taking the liquid changing process as an example, the electrolyte cavity and each first electrolyte branch pipe 201a in the column main body 202 are filled with new electrolyte through an external electrolyte injection pipeline, and the safener cavity and each first safener branch pipe 201b in the column main body are filled with safener through an external safener injection pipeline. In the liquid changing process, the used electrolyte in the battery is drawn out through each second branch pipe and the discharge column main body, and new electrolyte enters the plurality of batteries through each first electrolyte branch pipe 201a, the first valve 6 and the first collecting pipe 201c, respectively, and at this time, the first electrolyte branch pipe 201a is in fluid communication with the first collecting pipe 201c by controlling the first valve 6. After the liquid is changed, the first electrolyte branch pipe 201a is communicated with the first collecting pipe 201c by controlling the first valve 6, and the gas branch pipe 10 is communicated with the inside of the battery by controlling the second valve 9, so that the atmosphere inside the battery is monitored in real time. When potential safety hazards are detected, the gas branch pipe 10 is cut off from the interior of the battery by controlling the second valve 9, the first safety agent branch pipe 201b is communicated with the first collecting pipe 201c by controlling the first valve 6, and safety agents are injected into the interior of the battery in time.

Fig. 6(a), 6(b), 6(c) and 6(d) are schematic views of an injection column according to the present invention, wherein fig. 6(a) and 6(b) show perspective and cross-sectional views of a multi-lumen embodiment, and fig. 6(c) and 6(d) show perspective and cross-sectional views of a multi-injection fluid line embodiment. In the embodiment shown in fig. 6(a) and 6(b), an electrolyte chamber 202a and a safener chamber 202b are provided in the injection column main body, a first electrolyte branch pipe 201a is installed on a side wall of the injection column main body such that the first electrolyte chamber 202a is in fluid communication with the first electrolyte branch pipe 201a, and a first safener branch pipe 201b is installed on a side wall of the injection column main body such that the safener chamber 202b is in fluid communication with the first safener branch pipe 201 b. In the embodiment shown in fig. 6(c) and 6(d), an electrolyte injection fluid pipeline 202c and a safener injection fluid pipeline 202d are arranged in the hollow injection column main body, a through hole is arranged on the side wall of the injection column main body, a first electrolyte branch pipe 201a is connected with the electrolyte injection fluid pipeline 202c through the through hole on the side wall of the injection column main body, and a first safener branch pipe 201b is connected with the safener injection fluid pipeline 202d through another through hole on the side wall of the injection column main body.

The specific embodiments of the present invention are not intended to be limiting of the invention. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments, using the methods and techniques disclosed above, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims

1. A battery holder for battery maintenance and safety protection of a plurality of batteries, each of said batteries being provided with a first drain port and a second drain port for fluid drain, said battery holder comprising: a column including an injection column body and a discharge column, the injection column including a hollow injection column body and a plurality of first branch pipes extending outward from the injection column body in a vertical direction of the injection column body, the first branch pipes being connected to first injection and discharge ports of the battery, the discharge column including a hollow discharge column body and a plurality of second branch pipes extending outward from the discharge column body in the vertical direction of the discharge column body, the second branch pipes being connected to second injection and discharge ports of the battery; a plurality of shelves mountable to the column.

2. The battery stand of claim 1, wherein a cavity is formed in the hollow injection stud body, the first leg being integrally formed with or mounted to the injection stud body, the first leg being in fluid communication with the cavity of the injection stud body; and a cavity is formed in the hollow discharge upright post main body, the second branch pipe and the discharge upright post main body are integrally formed or the second branch pipe is arranged in the discharge upright post main body, and the second branch pipe is communicated with the cavity of the fluid of the discharge upright post main body.

3. The battery holder according to claim 2, wherein the hollow injection column body includes an electrolyte chamber for flowing an electrolyte and a safety agent chamber for flowing a safety agent, the first branch pipe includes a first electrolyte branch pipe for flowing an electrolyte, a first safety agent branch pipe for flowing a safety agent, and a first manifold pipe, a first valve is further provided on the first branch pipe, the electrolyte chamber communicates with the first electrolyte branch pipe and the safety agent chamber communicates with the first safety agent branch pipe, and the first electrolyte branch pipe and the first safety agent branch pipe are connected to the first injection port via the first valve and the first manifold pipe.

4. The battery holder of claim 1, wherein an injection fluid conduit is provided in the hollow injection stud body and a plurality of first through holes are provided in the injection stud body, the first branch pipe being in fluid communication with the injection fluid conduit via the first through holes, the first branch pipe being integrally formed with or mounted to the injection fluid conduit; a discharge fluid pipeline is arranged in the hollow discharge column main body, a plurality of second through holes are formed in the discharge column main body, the second branch pipe is in fluid communication with the discharge fluid pipeline through the second through holes, and the second branch pipe and the discharge fluid pipeline are integrally formed or the second branch pipe is installed on the discharge fluid pipeline.

5. The battery holder according to claim 4, wherein the injection fluid line includes an electrolyte injection fluid line for circulating an electrolyte and a safety agent injection fluid line for circulating a safety agent, the first branch line includes a first electrolyte branch line for circulating an electrolyte, a first safety agent branch line for circulating a safety agent, and a first manifold, a first valve is further provided on the first branch line, the electrolyte injection fluid line communicates with the first electrolyte branch line and the safety agent injection fluid line communicates with the first safety agent branch line, and the first electrolyte branch line and the first safety agent branch line are connected to the first injection port via the first valve and the first manifold.

6. The battery holder according to claim 3 or 5, wherein the battery holder further comprises a gas detection device, a gas manifold, and a plurality of gas branch pipes, each of the gas branch pipes being connected to the first branch pipe, the plurality of gas branch pipes being respectively communicated with the gas manifold, the gas manifold being connected to the gas detection device so as to detect an atmosphere within the battery.

7. The battery holder according to claim 6, wherein the gas branch pipes are connected to the first valves provided on the first branch pipes, the plurality of gas branch pipes are respectively communicated to the gas header pipes, and the gas header pipes are connected to the gas detection device so as to detect an atmosphere inside the battery; or, the battery rack further comprises a plurality of second valves, each gas branch pipe is connected to the first branch pipe through the second valve, the plurality of gas branch pipes are respectively communicated with the gas manifold, and the gas manifold is connected to the gas detection device so as to detect the atmosphere in the battery.

8. The battery holder of claim 1, further comprising two shields disposed on two sides of the battery holder, the shields extending forward a distance from a front surface of the battery where the first and second fill ports are disposed that is greater than a distance the first and second legs extend forward.

9. The battery holder according to claim 8, wherein the protector plate is a bent structure including a side surface and a bent portion, the side surface of the protector plate is mounted to the side surface of the battery holder, and the bent portion of the protector plate extends at least partially to cover the first or second branch pipe.

10. The battery stand of claim 1, wherein the battery stand has a width greater than a width of a battery, the first and second branch tubes extending forward from a front surface of the battery where the first and second drain ports are located and extending no further than a front side injection and drain post body of the battery stand.

11. The battery rack according to claim 1, wherein the battery rack is further provided with a cross beam connected to the upright, and a slot is provided on the upright or the cross beam, into which the shelf can be inserted, and the height of a space for resting the battery can be adjusted by inserting the shelf into different slots; or threaded holes are formed in the upright posts or the cross beams, and the height of the space for placing the battery can be adjusted by fixing the shelf in different threaded holes by using screws.

12. The battery stand of claim 1, wherein the battery stand comprises an outer cabinet, the battery stand being placeable in or mounted as a unitary structure with the outer cabinet.

13. A container energy storage power station, characterized in that a plurality of battery racks according to any one of claims 1 to 12 are installed in a container of the container energy storage power station.

14. An operating method of the battery stand capable of battery maintenance and safety protection according to any one of claims 1 to 12, wherein the operating method comprises a battery filling method, wherein in the battery filling method, in a first step, gas in the battery is exhausted through an exhaust column of the battery stand and electrolyte is injected into the battery through an injection column; secondly, under the condition that a single cavity or a single injection fluid pipeline is arranged in the injection upright post, after the electrolyte is injected, the communication between the injection upright post and a first injection and discharge port of the battery is cut off by controlling a first valve arranged on a first branch pipe, the electrolyte injected into the injection upright post is extracted, and the safety agent is injected into the injection upright post; under the condition that a plurality of cavities or a plurality of injection fluid pipelines are arranged in the injection upright post, the first electrolyte branch pipe used for injecting electrolyte and the first collecting pipe are cut off by controlling the first valve arranged on the first branch pipe, and the first safener branch pipe used for injecting the safener can be communicated with the first collecting pipe by controlling the first valve.

15. The operating method according to claim 14, wherein the operating method includes a battery replacement method in which, in a first step, a safener injected into the injection column is drawn out and an electrolyte is injected into the injection column with a single cavity or a single injection fluid line provided in the injection column; under the condition that a plurality of cavities or a plurality of injection fluid pipelines are arranged in the injection upright post, a first electrolyte branch pipe for injecting electrolyte is communicated with a first collecting pipe by controlling a first valve arranged on a first branch pipe; secondly, discharging waste liquid in the battery through a discharge upright post of the battery rack and injecting new electrolyte into the battery through an injection upright post; thirdly, after liquid is changed, under the condition that a single cavity or a single injection fluid pipeline is arranged in the injection upright post, after the electrolyte is injected, the communication between the injection upright post and a first injection and discharge port of the battery is cut off by controlling a first valve arranged on a first branch pipe, the electrolyte injected into the upright post is extracted, and a safety agent is injected into the injection upright post; under the condition that a plurality of cavities or a plurality of injection fluid pipelines are arranged in the injection upright post, the first electrolyte branch pipe used for injecting electrolyte and the first collecting pipe are cut off by controlling the first valve arranged on the first branch pipe, and the first safener branch pipe used for injecting the safener can be communicated with the first collecting pipe by controlling the first valve.

16. The operating method according to claim 14 or 15, wherein after the liquid injection process or the liquid replacement process is finished, the gas branch pipe is communicated with the interior of the battery by controlling a first valve arranged on the first branch pipe or a second valve arranged on the gas branch pipe, so that the gas in the battery can enter the gas detection device through the gas branch pipe and the gas main pipe to monitor the gas in the battery.