CN117239295A - High-safety household energy storage lithium battery module - Google Patents
High-safety household energy storage lithium battery module Download PDFInfo
- Publication number
- CN117239295A CN117239295A CN202311497178.7A CN202311497178A CN117239295A CN 117239295 A CN117239295 A CN 117239295A CN 202311497178 A CN202311497178 A CN 202311497178A CN 117239295 A CN117239295 A CN 117239295A
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- shell
- battery
- jacking
- battery module
- energy storage
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 27
- 238000004146 energy storage Methods 0.000 title claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000000110 cooling liquid Substances 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 239000000779 smoke Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004880 explosion Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000000391 smoking effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model relates to the field of lithium batteries, and discloses a high-safety household energy storage lithium battery module which comprises a mounting shell, wherein a cooling tank, a fan and a plurality of battery modules are arranged in the mounting shell, each battery module comprises a battery unit and a triggering mechanism, each battery unit comprises an outer connecting shell vertically arranged at the bottom of the cooling tank, a battery shell is sleeved in the outer connecting shell, a convex frame is arranged in each battery shell, a battery body is arranged in each convex frame, a jack is arranged on each battery shell in a penetrating manner in the vertical direction, a shaft shoulder is formed in each jack, a guide rod is sleeved in each jack, the lower end of each guide rod is positioned below the corresponding shaft shoulder and provided with a nut, a first spring is arranged between each nut and each shaft shoulder, the upper end of each guide rod is provided with a heat conducting plate, each heat conducting plate is positioned in the cooling tank and provided with a plurality of fins, and in an initial state, and the first spring is in a compressed state and enables the lower end face of each heat conducting plate to be attached to the upper opening end of each battery shell to form sealing fit.
Description
Technical Field
The utility model relates to the field of lithium batteries, in particular to the field of household energy storage lithium batteries, and particularly relates to a household energy storage lithium battery module with high safety.
Background
The household energy storage means that the technologies such as photovoltaic power generation are utilized to generate electric power, the electric power is stored through the battery module, the battery module is generally a lithium battery module, when the lithium battery module is used in charge and discharge, heat is inevitably generated, the temperature rises, fire is easily generated due to improper use, and household potential safety hazards are large, so that the safety of the household energy storage is to be improved.
The utility model patent of China with the publication number of CN216698551U is found through retrieval, and discloses a household energy storage lithium battery module with high safety, which detects spontaneous combustion information of a lithium battery through a smoke sensor, and when a wireless transmission device is matched with a control circuit, an electromagnet is powered off, so that a fireproof plate falls off, a lithium battery body is isolated from the outside, and the spread of spontaneous combustion is resisted; the Chinese patent with the application publication number of CN113764815A is found through retrieval, and discloses an energy storage battery safety system, which avoids potential system safety hazards caused by thermal runaway of a battery cell by guiding gas generated by the thermal runaway of the battery; these prior arts all detect through detecting certain data of battery, such as smoke detection or pressure detection, after triggering, in time isolate or gas guide the battery, play roles of preventing combustion, fire potential spreading, etc., but it all has some disadvantages:
the battery is ignited in two cases, namely, one of the two cases is short-circuited due to water dipping or improper use of the related circuit, so that the battery is damaged in a very short time, sparks exist, and the ignition phenomenon occurs, and under the condition, the battery which is ignited needs to be protected in time so as to avoid the expansion of the fire; secondly, the battery is heated up due to long-time charge and discharge use or high-power electric appliances are connected, and the like, and is in a high-temperature state for a long time to cause a fire phenomenon; on the other hand, the two patent documents, one of which uses a fire-proof plate to isolate the fire from the fire, and the other of which uses a gas flow to prevent the battery from continuing burning, can only play a role in preventing the fire from spreading and becoming large, the fire is not extinguished, the fire is not only re-grown, but also is easy to explode, and the fire safety performance is poor.
Based on the above, the utility model provides a household energy storage lithium battery module with high safety.
Disclosure of Invention
In order to solve the problems mentioned in the background, the utility model provides a household energy storage lithium battery module with high safety.
In order to achieve the technical purpose, the technical scheme adopted by the utility model is as follows.
The household energy storage lithium battery module with high safety comprises a mounting shell, wherein a cooling tank is arranged in the mounting shell, cooling liquid is stored in the cooling tank, a one-way valve is arranged on a mounting cover arranged at an upper opening of the mounting shell and used for enabling fluid in the mounting shell to flow unidirectionally towards the outside, a fan and a plurality of groups of battery modules are arranged in the mounting shell, and each battery module comprises a battery unit and a triggering mechanism;
the bottom of the cooling tank is provided with a communication port, the battery unit comprises an outer connecting shell which is vertically arranged and connected with a lower orifice of the communication port, a battery shell is sleeved inside the outer connecting shell, sealing sliding fit is formed between the outer connecting shell and the battery shell, a convex frame is arranged in the battery shell, a battery body is arranged inside the convex frame, and a bottom cover is arranged at the bottom of the battery shell;
the battery shell is provided with a jack in a penetrating mode along the vertical direction, the jack is divided into a lower hole section and an upper hole section which are coaxial and unequal in diameter along the axis, the aperture of the upper hole section is smaller than that of the lower hole section, a shaft shoulder is formed between the lower hole section and the upper hole section, a guide rod is sleeved in the jack, the lower end of the guide rod is located in the lower hole section and provided with a nut, a first spring is arranged between the nut and the shaft shoulder, the upper end of the guide rod is provided with a heat conducting plate, the heat conducting plate is located in a cooling tank, a plurality of fins are arranged on the upper end face of the first spring, and the first spring is in a compressed state and enables the lower end face of the heat conducting plate to be attached to the upper opening end of the battery shell to form sealing fit.
Further, the trigger mechanism includes the mounting bracket that sets up at the installation shell chamber end, installs jacking member and trigger member on the mounting bracket, and jacking member's upper end is connected with the bottom, and jacking member sets up to switch between spacing state and jacking state, and when being in spacing state, jacking member does not exert vertical ascending jacking force to the bottom, and when being in the jacking state, jacking member exerts vertical ascending jacking force to the bottom, and trigger member is used for controlling the state switching of jacking member.
Further, the anode and the cathode of the battery body are arranged at the bottom and are extended with conductive pins, and the conductive pins extend out of the battery shell;
the mounting frame is provided with a conductive member which is vertically arranged, the conductive member comprises a conductive shaft which is coaxial with the conductive pin and hollow in the interior, and the conductive pin is inserted into the conductive shaft initially.
Further, the jacking member comprises a connecting column vertically arranged at the bottom of the bottom cover, and clamping grooves are formed in two side surfaces of the connecting column along the width direction of the mounting shell;
the jacking component further comprises two groups of clamping blocks which are respectively positioned at two sides of the connecting column, the clamping blocks and the mounting frame form sliding fit along the width direction of the mounting shell, one sides of the two groups of clamping blocks, which are opposite to each other, are respectively provided with a spring III, one sides of the two groups of clamping blocks, which are opposite to each other, are respectively extended to form a bulge, the bulge is positioned in the clamping groove, the lower end of the bulge is arranged to be a lower plane, the upper end of the bulge is arranged to be an upper inclined plane, the distance between the upper inclined planes on the two bulges is gradually increased from bottom to top, initially, the spring IV arranged below the connecting column is in a compressed state,
further, the jacking component comprises an unlocking bracket positioned below the clamping block, a spring five is arranged below the unlocking bracket, and the spring five is in a compression state initially;
the upper end of unblock support extends there is the unblock post, and the upper end of unblock post is provided with the unblock inclined plane, and the bottom of fixture block is provided with down the inclined plane, and the distance between the lower inclined plane on two sets of fixture blocks is progressively decreased from bottom to top, and the unblock inclined plane is laminated with lower inclined plane.
Further, a heat conduction pipe is sleeved in the battery shell;
the triggering component comprises two groups of triggering components which are respectively positioned at two sides of the jacking component.
Further, the trigger assembly comprises a pump shell vertically arranged on the mounting frame, a piston is sleeved in the pump shell, a piston rod extends from the bottom of the piston, the bottom of the piston rod extends out of the pump shell and is provided with a compression bar which is horizontally arranged, a second spring is arranged below the piston, the heat conducting pipe is connected with the side face of the pump shell, and a thermal expansion medium is arranged in the area, above the piston, of the pump shell.
Further, the trigger assembly comprises a trigger support hinged to the mounting frame, one end of the trigger support is located below the compression bar, an elastic sheet is arranged below the end of the trigger support, and the other end of the trigger support is located above the unlocking support.
Compared with the prior art, the utility model has the beneficial effects that:
1. during normal use, the heat dissipation effect of the household energy storage lithium battery module is improved through the cooperation of liquid cooling and air cooling;
2. the battery unit is charged and discharged for a long time or is connected with a high-power electric appliance to cause temperature rise, when the battery unit is in a high-temperature state, the battery unit can be broken and wrapped by cooling liquid in time, and the battery unit can be cooled rapidly so as to be prevented from being damaged;
furthermore, even if phenomena such as smoke and fire still occur in the subsequent battery units, the battery units are soaked in the cooling liquid, so that the fire is small, generated smoke and air thermal expansion can resist the upward movement of the heat deriving component, the cooling liquid can enter the battery shell, the battery body is wrapped by the cooling liquid, and at the moment, the battery units and the battery body are soaked in the cooling liquid, so that the fire can be effectively and quickly extinguished;
3. the battery unit is short-circuited due to reasons such as water dipping or improper use of related circuits, the battery temperature rises sharply, the battery is damaged in a very short time, and when the battery unit is in a fire phenomenon, the heat conduction assembly moves upwards quickly, the cooling liquid enters the triggering area along the upper opening of the battery shell for the first time to wrap the battery body, the fire and explosion prevention effect is achieved, then the triggering mechanism is triggered, the battery unit rises into the cooling tank, the battery unit is cooled on one hand, the battery module which is in a problem is isolated on the other hand, the other good battery modules are prevented from being influenced by the battery module which is in a problem, in addition, in this case, generated smoke is relatively large, the pressure of the cooling tank is increased, part of cooling liquid can be discharged into the outside through the one-way valve and distributed on the outer surface of the installation shell, and the effect of preventing the installation shell from being triggered by high temperature to cause the fire can be achieved.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present utility model;
FIG. 2 is a schematic diagram of a second embodiment of the present utility model;
FIG. 3 is a schematic diagram of the interior of the present utility model;
FIG. 4 is a second internal schematic diagram of the present utility model;
fig. 5 is a schematic view of a battery module;
fig. 6 is a sectional view of the battery cell;
fig. 7 is a schematic view of the trigger mechanism when the battery module is in a normal state;
FIG. 8 is a schematic view of a trigger assembly;
FIG. 9 is a schematic view of a jacking member;
FIG. 10 is a schematic diagram of the latch and the connecting post;
fig. 11 is a schematic view of a battery module in a fireproof state;
fig. 12 is a schematic view of the triggering mechanism when the battery module is in a fireproof state.
The reference numerals in the drawings are:
100. mounting a shell; 101. a one-way valve; 102. a cooling pool; 103. a blower; 200. a battery module; 300. a battery unit; 301. an outer connecting shell; 302. a bottom cover; 303. a battery case; 304. a battery body; 3041. a conductive pin; 305. a jack; 306. a guide rod; 307. a first spring; 308. a heat conductive plate; 309. a fin; 310. a heat conduction pipe; 400. a trigger mechanism; 410. a jacking member; 411. a clamping block; 4111. a protrusion; 4112. an upper inclined plane; 4113. a lower plane; 4114. a lower inclined plane; 412. a third spring; 413. a connecting column; 4131. a clamping groove; 414. a spring IV; 415. unlocking the bracket; 416. unlocking the column; 417. a spring V; 418. a movable rod; 419. a spring six; 420. a trigger member; 421. a pump housing; 422. a piston; 423. a piston rod; 424. a compression bar; 425. a second spring; 426. triggering a bracket; 427. an elastic sheet; 430. a conductive member.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1-4, a high-safety household energy storage lithium battery module comprises a mounting housing 100, wherein a cooling tank 102 is arranged in the mounting housing 100, cooling liquid is stored in the cooling tank 102, a one-way valve 101 is arranged on a mounting cover arranged at an upper opening of the mounting housing 100, and the one-way valve 101 is used for enabling fluid in the mounting housing 100 to flow unidirectionally towards the outside.
The battery module 200 and the fan 103 are arranged in the installation shell 100, the battery module 200 is provided with a plurality of groups along the length direction array of the installation shell 100, the fan 103 is used for carrying out air cooling and heat dissipation on the battery module 200, and a plurality of ventilation holes are correspondingly formed in the outer surface of the installation shell 100.
The battery module 200 is arranged to be switched among a normal state, a quick cooling state and a fireproof state, when the battery module is in the normal state, a heat conduction assembly arranged at the upper end of the battery module 200 is positioned in the cooling tank 102, liquid cooling heat dissipation of the battery module 200 by cooling liquid is realized through the heat conduction assembly, the heat dissipation effect of air cooling heat dissipation and liquid cooling heat dissipation is better when the household energy storage lithium battery module is used, when the battery module is in the quick cooling state, the battery unit 300 in the battery module 200 is wholly positioned in the cooling tank 102, the battery unit 300 is disconnected, the battery unit 300 in the battery module 200 is quickly cooled by cooling liquid, when the battery module is in the fireproof state, the battery unit 300 is wholly positioned in the cooling tank 102 and is disconnected, and the periphery of the battery body 304 in the battery unit 300 is also wrapped by cooling liquid, so that the purposes of fire prevention and explosion prevention are achieved.
From the above, the following objects can be achieved by the present solution:
1. during normal use, the heat dissipation effect of the household energy storage lithium battery module is improved through the cooperation of liquid cooling and air cooling;
2. the battery unit is charged and discharged for a long time or is connected with a high-power electric appliance and the like to cause temperature rise, when the battery unit is in a high-temperature state, the battery unit can be disconnected in time and wrapped by cooling liquid, the battery unit can be quickly cooled, so that the battery unit is not damaged, further, even if the phenomena of smoking, ignition and the like still occur in the subsequent battery unit, the battery unit and the battery body are soaked in the cooling liquid, and fire can be effectively extinguished;
3. in addition, in this case, the generated smoke is relatively large, so that the pressure of the cooling tank 102 becomes large, and part of the cooling liquid can be discharged to the outside through the check valve 101 and distributed on the outer surface of the installation housing 100, thereby preventing the installation housing 100 from being ignited by high temperature.
Referring to fig. 5, the battery module 200 is composed of a battery cell 300 for storing or discharging electric power and a trigger mechanism 400 for lifting it into the cooling tank 102 when the former temperature is abnormal.
1. Battery cell 300:
referring to fig. 6, the battery cell 300 includes an outer connection case 301 vertically disposed at the bottom of the cooling tub 102 and the bottom of the cooling tub 102 is provided with a communication port communicating with the outer connection case 301.
The battery housing 303 is sleeved inside the outer connecting housing 301, sealing sliding fit is formed between the battery housing 303 and the outer connecting housing, a convex frame is arranged on the battery housing 303, a battery body 304 is arranged inside the convex frame, and the convex frame has the meaning that a triggering area exists between the battery body 304 and the battery housing 303.
The bottom of battery case 303 is provided with bottom 302, and the positive and negative poles of battery body 304 all set up in the bottom and extend and have electrically conductive round pin 3041, still overlap in the battery case 303 and be equipped with heat pipe 310, and the bottom of heat pipe 310 is connected with trigger mechanism 400, and the heat that produces when using battery unit 300 is conducted trigger mechanism 400 through heat pipe 310.
The bottom cover 302 is provided with a relief hole for relieving the heat pipe 310 and the conductive pin 3041.
The battery case 303 is provided with a jack 305 in a penetrating manner along the vertical direction, the jack 305 is divided into a lower hole section and an upper hole section which are coaxial and have unequal diameters along the axial lead, the aperture of the upper hole section is smaller than that of the lower hole section, a shaft shoulder is formed between the lower hole section and the lower hole section, a guide rod 306 is sleeved in the jack 305, the lower end of the guide rod 306 is positioned in the lower hole section and provided with a nut, a first spring 307 is arranged between the nut and the shaft shoulder, the upper end of the guide rod 306 is provided with a heat conducting plate 308, the heat conducting plate 308 is positioned in the cooling tank 102, the upper end face of the heat conducting plate 308 is provided with a plurality of fins 309, and in the initial state, the first spring 307 is in a compressed state and enables the heat conducting plate 308 to be attached to the upper opening end of the battery case 303 to form a sealing fit, at the moment, generated heat is in a normal state, and the generated heat is conducted to cooling liquid through the battery case 303, the heat conducting plate 308 and the fins 309 to realize liquid cooling and heat dissipation.
The heat conducting assembly consists of a heat conducting plate 308 and fins 309.
2. Trigger mechanism 400:
referring to fig. 7, the trigger mechanism 400 includes a lifting member 410 and a trigger member 420, the upper end of the lifting member 410 is connected to the bottom cover 302, the lifting member 410 is configured to switch between a limit state, in which it does not apply a vertically upward lifting force to the bottom cover 302, and a lifting state, in which it applies a vertically upward lifting force to the bottom cover 302, and the trigger member 420 is used to determine the state switching of the lifting member 410 according to the temperature of the battery cell 300.
Referring to fig. 5, the trigger mechanism 400 further includes a mounting bracket disposed at the bottom of the mounting housing 100.
Referring to fig. 9 and 10, the jacking member 410 includes a connection post 413 vertically provided at the bottom of the bottom cover 302, and both sides of the connection post 413 in the width direction of the mounting case 100 are provided with a catching groove 4131.
The jacking member 410 further includes two sets of clamping blocks 411 respectively located at two sides of the connecting post 413, the clamping blocks 411 and the mounting frame form sliding fit along the width direction of the mounting housing 100, one side of the two sets of clamping blocks 411 opposite to each other is respectively provided with a third spring 412, one side of the two sets of clamping blocks 411 opposite to each other is respectively extended with a protrusion 4111, the protrusions 4111 are located in the clamping grooves 4131, the lower ends of the protrusions 4111 are set to be lower planes 4113, initially, a fourth spring 414 arranged below the connecting post 413 is in a compressed state, the connecting post 413 is limited to move upwards by the cooperation of the lower planes 4113 and the clamping grooves 4131, the fourth spring 414 does not release elastic force, in addition, the upper ends of the protrusions 4111 are set to be upper inclined planes 4112, and the distance between the upper inclined planes 4112 on the two protrusions 4111 is increased from bottom to top.
The jacking component 410 further comprises an unlocking bracket 415 positioned below the clamping blocks 411, a spring five 417 is arranged below the unlocking bracket 415, the spring five 417 is in a compressed state initially, the triggering component 420 limits the unlocking bracket 415 to move upwards, the spring five 417 does not release elastic force, an unlocking post 416 extends from the upper end of the unlocking bracket 415, an unlocking inclined plane is arranged at the upper end of the unlocking post 416, in addition, a lower inclined plane 4114 is arranged at the bottom of the clamping blocks 411, the distance between the lower inclined planes 4114 on the two groups of clamping blocks 411 is decreased from bottom to top, and the unlocking inclined planes are attached to the lower inclined planes 4114.
When the restriction of the trigger member 420 to the unlocking bracket 415 is released, the fifth spring 417 releases the elastic force to move the unlocking bracket 415 upwards, the two sets of clamping blocks 411 are separated from each other through the cooperation of the unlocking inclined plane and the lower inclined plane 4114, the boss 4111 is separated from the clamping groove 4131, and the fourth spring 414 releases the elastic force to move the connecting column 413 upwards, so that the bottom cover 302 is carried upwards.
Referring to fig. 7, the trigger member 420 includes two sets of trigger assemblies located on either side of the lifting member 410.
Referring to fig. 8, the trigger assembly includes a pump case 421 vertically installed on the installation frame, a piston 422 is sleeved in the pump case 421, a piston rod 423 is extended at the bottom of the piston 422, the bottom of the piston rod 423 extends out of the pump case 421 and is provided with a compression bar 424 horizontally arranged, a second spring 425 is provided below the piston 422, a heat conducting pipe 310 is connected with a side surface of the pump case 421 and is used for conducting heat to the pump case 421, and when the temperature of the battery body 304 rises, a thermal expansion medium is provided in a region above the piston 422 inside the pump case 421, and corresponding thermal expansion occurs, so that the piston 422, the piston rod 423 and the compression bar 424 move downward.
The trigger assembly further comprises a trigger bracket 426 hinged to the mounting frame, a hinge shaft formed at the hinge position is parallel to the length direction of the mounting housing 100, one end of the trigger bracket 426 is located below the compression bar 424, an elastic piece 427 is arranged below the end of the trigger bracket 426, and the other end of the trigger bracket 426 is located above the unlocking bracket 415 to limit the unlocking bracket 415.
When the temperature of the battery body 304 increases to move the compression bar 424 downward, the compression bar 424 pushes the trigger bracket 426 downward, so that the trigger bracket 426 rotates around the hinge shaft, the other end of the trigger bracket 426 gradually releases the restriction on the unlocking bracket 415, and the elastic piece 427 is compressed.
In the preferred embodiment, referring to fig. 11 and 12, the other end of the trigger bracket 426 gradually releases the restriction on the unlocking bracket 415, and thus, after the battery module 200 is completely switched, in order to reset, the other end of the unlocking bracket 415 needs to remain above the unlocking bracket 415, similar to the positional relationship between the pressing rod 424 and the trigger bracket 426, but in this way, in order to avoid the interference between the parts, the other end of the unlocking bracket 415 or the trigger bracket 426 needs to be extended, leaving a sufficient distance, which eventually increases the width of the installation housing 100 and increases the overall size, for which:
referring to fig. 9 and 12, a movable rod 418 is slidably mounted on each of two sides of the unlocking bracket 415 along the sliding direction of the clamping block 411, a six spring 419 is respectively arranged on each of opposite sides of the two movable rods 418, initially, the end part of the triggering bracket 426 is located above the movable rod 418, a reset inclined plane is arranged at the bottom of the movable rod 418, and the distance between the reset inclined planes on the two movable rods 418 increases from bottom to top; in this way, even if the unlocking bracket 415 or the movable lever 418 is located above the trigger bracket 426 after the battery module 200 is switched in state due to the temperature rise, the subsequent resetting of the unlocking bracket 415 is not affected, and the width dimension of the mounting case 100 can be reduced.
Referring to fig. 7 and 8, a conductive member 430 is disposed in a vertical arrangement on a mounting frame or a side frame disposed at a side of a pump case 421, the conductive member 430 includes a conductive shaft coaxial with a conductive pin 3041 and hollow inside, and initially, the conductive pin 3041 is inserted into the conductive shaft, and the conductive shaft is correspondingly provided with two groups, and in addition, a series-parallel connection and a related circuit between the conductive shafts of a plurality of groups of battery modules 200 may be implemented in the prior art, and not described in detail, the conductive pin 3041 is inserted into the conductive shaft, and the circuit of the corresponding battery module 200 is intact, and if the conductive pin 3041 leaves the conductive middle, the corresponding battery module 200 is disconnected.
The working principle of the utility model is as follows:
1. during normal use, the battery module 200 is in a normal state, and the battery module 200 is cooled by air cooling heat dissipation of the fan 103 and liquid cooling heat dissipation of the cooling liquid and the fins 309, so that the effect is better;
2. when the temperature of the battery module 200 gradually rises, the thermal expansion medium also generates corresponding thermal expansion, so that the jacking member 410 gradually approaches to the jacking state, when the temperature reaches a critical trigger value, the jacking member 410 is also switched to the jacking state, and moves upwards against the bottom cover 302, the battery shell 303, the battery body 304 and the heat conduction component together, and finally, the rest part of the battery shell 303, except the bottom cover 302 and the bottom part of the battery shell 303, moves upwards into the cooling tank 102 together with the battery body and the heat conduction component, is wrapped by cooling liquid, so that the purpose of rapid cooling is realized, and the battery module 200 is in a rapid cooling state;
then, in one of three cases, the battery module 200 is not damaged, the user can open the mounting cover, and press the battery module 200 in the rapid cooling state manually or by using a tool, so that the battery module 200 can be switched back to the normal state; secondly, if the battery module 200 is damaged, the scheme is interrupted, the cooling liquid in the cooling tank 102 is pumped away through the prior art, then the electricity Chi Waike is directly pulled away, the damaged battery body 304 is taken down, a new battery body 304 is replaced, then the battery body is inserted back, and then the cooling liquid is put back into the cooling tank 102; thirdly, the battery body 304 still generates a fire phenomenon, so that the air in the triggering area between the battery body 304 and the battery shell 303 is thermally expanded due to the high temperature generated by the fire, and the heat conduction assembly moves upwards by overcoming the elasticity of the first spring 307 due to the generation of smoke, so that the cooling liquid enters the triggering area along the upper opening of the battery shell 303 to wrap the battery body 304, and the fire and explosion extinguishing function is achieved.
3. When the temperature of the battery module 200 rises in a short time and a fire occurs, the heat conducting component is moved upwards, the cooling liquid enters the triggering area along the upper opening of the battery housing 303 at the first time to wrap the battery body 304, thereby playing a role in fire extinguishment and explosion prevention, and then the triggering mechanism 400 is triggered to enable the battery unit 300 to rise into the cooling tank 102, so that the battery unit 300 is cooled on one hand and the battery module 200 which has a problem is isolated on the other hand.
In this scheme, the spare part that involves heat conduction is made for heat conduction material, for prior art can realize, and the description is omitted.
The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (8)
1. The utility model provides a high family energy storage lithium battery module of security, includes installation shell (100), its characterized in that: a cooling tank (102) is arranged in the installation shell (100), cooling liquid is stored in the cooling tank (102), a one-way valve (101) is arranged on an installation cover arranged at an upper opening of the installation shell (100), the one-way valve (101) is used for enabling fluid in the installation shell (100) to flow unidirectionally towards the outside, a fan (103) and a plurality of groups of battery modules (200) are arranged in the installation shell (100), and the battery modules (200) comprise battery units (300) and a triggering mechanism (400);
the bottom of the cooling pool (102) is provided with a communication port, the battery unit (300) comprises an outer connecting shell (301) which is vertically arranged and is connected with a lower orifice of the communication port, a battery shell (303) is sleeved in the outer connecting shell (301) and forms a sealing sliding fit between the battery shell and the outer connecting shell, a convex frame is arranged in the battery shell (303), a battery body (304) is arranged in the convex frame, and a bottom cover (302) is arranged at the bottom of the battery shell (303);
the battery shell (303) is provided with a jack (305) in a penetrating mode along the vertical direction, the jack (305) is divided into a lower hole section and an upper hole section which are coaxial and unequal in diameter along the axis, the aperture of the upper hole section is smaller than that of the lower hole section, a shaft shoulder is formed between the lower hole section and the lower hole section, a guide rod (306) is sleeved in the jack (305), the lower end of the guide rod (306) is located in the lower hole section and is provided with a nut, a first spring (307) is arranged between the nut and the shaft shoulder, the upper end of the guide rod (306) is provided with a heat conducting plate (308), the heat conducting plate (308) is located in the cooling tank (102), a plurality of fins (309) are arranged on the upper end face of the heat conducting plate (308), and in an initial state, the lower end face of the first spring (307) is in a compressed state, and the lower end face of the heat conducting plate (308) is attached to the upper opening end of the battery shell (303) to form sealing fit.
2. The high-safety household energy storage lithium battery module according to claim 1, wherein: the triggering mechanism (400) comprises a mounting frame arranged at the bottom of a cavity of the mounting shell (100), a jacking member (410) and a triggering member (420) are mounted on the mounting frame, the upper end of the jacking member (410) is connected with the bottom cover (302), the jacking member (410) is arranged to be switched between a limiting state and a jacking state, when the jacking member (410) is in the limiting state, no vertical upward jacking force is applied to the bottom cover (302) by the jacking member (410), when the jacking member is in the jacking state, vertical upward jacking force is applied to the bottom cover (302) by the jacking member (410), and the triggering member (420) is used for controlling state switching of the jacking member (410).
3. The high-safety household energy storage lithium battery module according to claim 2, wherein: the positive electrode and the negative electrode of the battery body (304) are arranged at the bottom and are extended with conductive pins (3041), and the conductive pins (3041) extend out of the battery shell (303);
the mounting frame is provided with a conductive member (430) arranged vertically, the conductive member (430) comprises a conductive shaft which is coaxial with a conductive pin (3041) and hollow in the interior, and the conductive pin (3041) is inserted into the conductive shaft initially.
4. The high-safety household energy storage lithium battery module according to claim 2, wherein: the jacking member (410) comprises a connecting column (413) vertically arranged at the bottom of the bottom cover (302), and clamping grooves (4131) are formed in two side surfaces of the connecting column (413) along the width direction of the mounting shell (100);
the jacking component (410) further comprises two groups of clamping blocks (411) which are respectively arranged on two sides of the connecting column (413), the clamping blocks (411) and the mounting frame form sliding fit along the width direction of the mounting shell (100), one side, opposite to the other side, of each clamping block (411) is respectively provided with a spring III (412), one side, opposite to the other side, of each clamping block (411) is respectively extended with a protrusion (4111), each protrusion (4111) is arranged in the corresponding clamping groove (4131), the lower end of each protrusion (4111) is provided with a lower plane (4113), the upper end of each protrusion is provided with an upper inclined plane (4112), the distance between the upper inclined planes (4112) on the two protrusions (4111) is increased from bottom to top, and initially, the springs IV (414) arranged below the connecting column (413) are in a compressed state.
5. The high-safety household energy storage lithium battery module according to claim 4, wherein: the jacking component (410) comprises an unlocking bracket (415) positioned below the clamping block (411), a spring five (417) is arranged below the unlocking bracket (415), and the spring five (417) is in a compressed state initially;
the upper end of unblock support (415) extends has unblock post (416), and the upper end of unblock post (416) is provided with the unblock inclined plane, and the bottom of fixture block (411) is provided with down inclined plane (4114), and the distance between lower inclined plane (4114) on two sets of fixture blocks (411) is progressively decreased from bottom to top, and the unblock inclined plane is laminated with lower inclined plane (4114).
6. The high-safety household energy storage lithium battery module according to claim 5, wherein: a heat conduction pipe (310) is sleeved in the battery shell (303);
the trigger member (420) includes two sets of trigger assemblies on either side of the jacking member (410).
7. The high-safety household energy storage lithium battery module according to claim 6, wherein: the trigger assembly comprises a pump shell (421) vertically arranged on the mounting frame, a piston (422) is sleeved in the pump shell (421), a piston rod (423) is extended at the bottom of the piston (422), a pressing rod (424) horizontally arranged is arranged at the bottom of the piston rod (423) extending out of the pump shell (421), a second spring (425) is arranged below the piston (422), the heat conducting pipe (310) is connected with the side face of the pump shell (421), and a thermal expansion medium is arranged in the area, above the piston (422), of the pump shell (421).
8. The high-safety household energy storage lithium battery module according to claim 7, wherein: the trigger assembly comprises a trigger support (426) hinged to the mounting frame, one end of the trigger support (426) is located below the compression bar (424), an elastic sheet (427) is arranged below the end of the trigger support (426), and the other end of the trigger support (426) is located above the unlocking support (415).
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| CN202311497178.7A CN117239295B (en) | 2023-11-10 | 2023-11-10 | High-safety household energy storage lithium battery module |
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| CN202311497178.7A CN117239295B (en) | 2023-11-10 | 2023-11-10 | High-safety household energy storage lithium battery module |
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| CN116632439A (en) * | 2023-05-17 | 2023-08-22 | 浙江旭普新能源科技有限公司 | Frame type household energy storage battery |
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| CN214176140U (en) * | 2021-02-08 | 2021-09-10 | 应急管理部天津消防研究所 | Submerged lithium battery fireproof energy storage cabinet |
| CN218548547U (en) * | 2022-03-29 | 2023-02-28 | 山东晟鹏新能源技术有限公司 | Self-cooling solar energy storage battery module |
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| CN116632439A (en) * | 2023-05-17 | 2023-08-22 | 浙江旭普新能源科技有限公司 | Frame type household energy storage battery |
| CN116914892A (en) * | 2023-09-08 | 2023-10-20 | 深圳市岳松科技有限公司 | Lithium battery protection board and abnormal protection device with same |
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|---|---|
| CN117239295B (en) | 2024-02-02 |
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