TWI622207B - Battery module with a baffle structure - Google Patents

Abstract

A battery module having a baffle structure, comprising: a casing having a receiving groove recessed on one side thereof; a cover body correspondingly disposed on the casing; a baffle assembly The battery pack is disposed in the accommodating slot; the battery pack is disposed in the accommodating slot, and the battery pack is spaced apart from the inner circumference of the partition assembly and the accommodating slot; a flow path having a plurality of air flow paths formed between the outer peripheral side of the battery pack and the partition plate and the accommodating groove, and the air flow paths are connected to each other; The present invention can solve the disadvantages of the prior art battery because of the absence of any buffering or guiding airflow structure, thereby causing a potential explosion hazard, through the arrangement of the baffle assembly and the flow guiding circuit.

Description

Battery module with a baffle structure

The invention relates to a battery module, in particular to a battery module having a baffle structure.

According to the current general battery, it refers to a battery device that provides mechanical or machine power. Generally, a power battery must have a high voltage and a large current to effectively drive the machine to operate, and the only energy to drive the machine, and the power battery can also be applied. Electric vehicles, electric locomotives, and electric bicycles, etc., which require a large amount of electric power, are of critical importance.

However, a general power battery mainly includes a casing in which a plurality of lithium batteries are fixed and separated by a fixed frame or a plurality of partition plates, thereby forming a plurality of battery packs, thereby combining to form a high voltage and a large current. Battery. Moreover, as the number of batteries required for the product and the operation time increase, when the battery is overcharged or short-circuited with a current higher than the rated current, the temperature of the electrolyte solution in the lithium battery is easily increased and generated. When the gas in the casing is filled with gas and cannot be discharged, and the internal pressure is too large, an explosion may occur. In order to prevent the shell from exploding due to the rapid expansion of the gas, an explosion-proof valve is usually disposed on the top plate of the casing, so as to provide a barrier for breaking the explosion-proof valve when the gas is rapidly expanded, so as to achieve the purpose of pressure relief.

Moreover, the housing, the holder or the partition in the conventional power battery only has the function of fixing the battery packs, and therefore, the lithium battery generating gas cannot be effectively guided to the housing. The position above the internal space, in other words, when the gas expands rapidly, since the casing, the fixing frame or the partition plate is not provided with any structure for buffering or guiding the air flow, the explosion-proof valve is too late to vent the internal gas pressure, and the gas pressure It will also directly break through the inner cover of the top cover or the inside of the casing, and cause the top cover or the inner circumference to be broken and erupted, thereby causing damage to the battery equipment or personal danger to the user.

Therefore, after observing the above-mentioned defects, the inventors of the present invention considered that there is still a need for further improvement of the structure, the holder or the spacer structure of the conventional power battery, and the present invention is produced.

The object of the present invention is to provide a battery module having a baffle structure, which can be disposed through the structure of the baffle plate, thereby further solving the problem that the prior art battery is not provided with any buffering or guiding airflow. Structure, which creates the disadvantage of a potentially explosive hazard. The present invention has a simple structure and can save the cost of use of materials, and has the utility of facilitating assembly and protecting the battery in the battery module.

In order to achieve the above object, a battery module having a baffle structure according to the present invention includes: a casing having a receiving groove recessed on one side thereof; and a cover body corresponding to the cover In the housing, the accommodating groove is formed as a closed space; a partition plate assembly having at least one partition plate disposed in the accommodating groove and partitioning at least two spaces; And the partition plate has at least one flow guiding area; the plurality of battery packs are correspondingly disposed in the accommodating groove and located in the accommodating spaces, and the battery packs and the partition plate and the accommodating groove The inner circumference is separated by a spacing; and a flow guiding circuit has a plurality of air guiding channels formed on the outer circumferential side of the battery pack and the partition and the receiving groove, and the The isotropic airflow paths are connected to each other, and the flow guiding zones are connected to the airflow paths.

Preferably, the partition assembly further comprises a top plate, wherein the top plate is provided with a plurality of air guiding holes, and the bottom side of the top plate is provided with the partition plate, and the air guiding holes are connected to the guiding circuit. .

Preferably, the partition assembly comprises two partitions, and the top plate and the partitions and the receiving groove are formed with three spaces.

Preferably, the method further includes a plurality of limiting plates, wherein the limiting plates are respectively disposed on the air guiding channels, and at least one of the bottom sides of the battery pack is provided with a limiting plate.

Preferably, wherein the limiting plates are composed of polystyrene.

Preferably, wherein the limiting plates are composed of foam.

Preferably, the circuit unit is further disposed with a circuit unit, a positive terminal and a negative terminal. The circuit unit is disposed in the receiving groove and located on one side of the spacer assembly, and the circuit unit is electrically connected. The battery pack, the positive electrode terminal and the negative electrode terminal, the positive electrode terminal and the negative electrode terminal are disposed on the cover body, and the positive electrode terminal and the negative electrode terminal are exposed on the top side of the cover body.

Preferably, the cover body is connected to the housing through a plurality of connecting members, and the connecting members are made of a plastic material, and the connecting members are used for the gas to push the cover body, so that the cover body is opposite to the cover body. The housing is displaced upward.

Preferably, the method further includes at least one limiting block, the top of the limiting block has a plurality of convex portions, and the limiting block is formed of a fusible material, and the limiting block is disposed at the same The partitions are located on the top side of the battery pack, and the protrusions are respectively inserted into the air guiding holes.

The battery module with the baffle structure provided by the invention is mainly used for profit Providing the spacer assembly, and the battery pack is spaced apart from the inner circumference of the partition and the receiving groove to form the flow guiding circuit; therefore, the high temperature gas when the battery pack is exploded The first impact of the partition and the inner circumference of the receiving groove, and then the flow path to the cover body for the high temperature gas during the explosion to push the cover body, and then push the top cover A gap is formed between the cover body and the casing for leaking high temperature gas during the explosion. Thereby, the present invention can further ensure that the prior art battery is provided with no buffering or guiding airflow through the arrangement of the partitions and the guiding area for the guiding airflow paths of the guiding circuit to communicate with each other. The structure, which creates the disadvantage of a potentially explosive hazard.

10‧‧‧shell

11‧‧‧ accommodating slots

12‧‧‧Bumps

121‧‧‧Group holes

20‧‧‧ cover

21‧‧‧Perforation

22‧‧‧Connecting parts

30‧‧‧Baffle assembly

31‧‧‧Baffle

311‧‧ ‧ diversion area

32‧‧‧ top board

321‧‧‧ Air vents

40‧‧‧Battery Pack

41‧‧‧Battery

42‧‧‧ circuit unit

43‧‧‧ positive terminal

44‧‧‧Negative terminal

50‧‧‧drain circuit

51‧‧‧ air duct

60‧‧‧Limited board

70‧‧‧Limited blocks

71‧‧‧ convex

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view showing the appearance of a preferred embodiment of the present invention.

Figure 2 is an exploded perspective view of a preferred embodiment of the present invention.

Figure 3 is a perspective cross-sectional view of a preferred embodiment of the present invention.

Figure 4 is a schematic view showing the state of use of a preferred embodiment of the present invention.

1 and 2, together with FIG. 3, is a perspective view, an exploded perspective view and a cross-sectional view of a preferred embodiment of the present invention, which discloses a battery having a baffle structure. The module, the battery module having the baffle structure comprises: a casing 10 having a receiving groove 11 recessed in one side; in the embodiment, the inner circumference of the receiving groove 11 A plurality of bumps 12 are provided, and the bumps 12 have a plurality of through holes 121.

A cover body 20 is correspondingly disposed on the casing 10, and the accommodating groove 11 is formed as a sealed space. In the embodiment, the cover 20 is provided with a plurality of through holes 21, and the perforations are The 21 series and the set of holes 121 correspond to each other. Moreover, the cover body 20 is assembled to the through holes 21 and the assembly holes 121 through the plurality of connecting members 22 for connecting the housing 10, and the connecting members 22 are made of a plastic material. 22 is selected from the group consisting of bolts, fixing pins, etc., which can be used for connection and fixing, and the connecting members 22 are capable of displacing the cover 20 upward with respect to the casing 10.

A baffle assembly 30 having at least one partition 31 disposed in the accommodating groove 11 and partitioning at least two spaces, and the partition 31 has at least one flow guiding area 311. In the embodiment, the partition plate assembly 30 further includes a top plate 32. The top plate 32 is provided with a plurality of air guiding holes 321 , and the bottom side of the top plate 32 is provided with two spaced apart partition plates 31 , and the top plate 32 and the partitioning plate 31 and the accommodating groove 11 are configured to have three placement spaces. Further, the partition plates 31 have two flow guiding regions 311 adjacent to the bottom side, and the guiding regions 311 are arranged at intervals. .

The plurality of battery packs 40 are disposed in the accommodating slots 11 and located in the accommodating spaces, and the battery packs 40 are spaced apart from the inner circumferences of the partitioning plates 31 and the accommodating slots 11 by a distance. In addition, the battery pack 40 is composed of one or more batteries 41. In the present embodiment, a circuit unit 42 is disposed in the accommodating slot 11 and located on one side of the slab assembly 30, and the circuit unit 42 is electrically connected to the battery pack 40 and a positive terminal 43. A negative terminal 44, the positive terminal 43 and the negative terminal 44 are disposed on the cover 20, and the positive terminal 43 and the negative terminal 44 are exposed on the top side of the cover 20.

a flow guiding circuit 50 having a plurality of air guiding passages 51 formed between the outer peripheral side of the battery pack 40 and the partitioning plate 31 and the receiving groove 11, and the air guiding flow The channels 51 are connected to each other. Further, the flow guiding area 311 is configured to communicate with the air guiding passages 51, and the air guiding holes 321 are in communication with the guiding circuit 50.

a plurality of limiting plates 60, wherein the limiting plates 60 are respectively disposed on the air guiding channels 51. At least one of the bottom sides of the battery pack 40 is provided with a limiting plate 60. In this embodiment, the limiting plates 60 are made of polystyrene.

a limiting block 70 having a plurality of convex portions 71 on the top of the limiting block 70, and the limiting block 70 is formed of a fusible material, and the limiting block 70 is disposed on the partitioning plate 31. And located on the top side of the battery pack 40, and the convex portions 71 are respectively inserted into the air guiding holes 321 . In this embodiment, the limiting blocks 70 are made of polystyrene.

For a further understanding of the structural features of the present invention, the application of the technical means, and the intended effect, the present invention will be described. It is believed that the present invention may be further understood and understood as follows: 3 and 4 are perspective cross-sectional views and a view showing a state of use of a preferred embodiment of the present invention. In the normal use state, as shown in FIG. 3; and when the battery pack 40 generates a gas explosion, as shown in FIG. 4, since the limiting plate 60 and the equivalent limiting block 70 are made of polystyrene The melting point of the polystyrene is about 230 ° C, wherein the temperature at which the battery pack 40 is exploded exceeds 500 ° C or even exceeds 1000 ° C. Therefore, the limiting plates 60 are melted by the high-temperature gas during the explosion. More specifically, the high temperature gas system at the time of the explosion first melts the limiting plate 60 and the limiting block 70, and then impacts the inner periphery of the partitioning plate 31 and the receiving groove 11, and then the airflow is guided by the airflow. The passage 51 is guided to the air guiding holes 321 , and the air guiding hole 321 further guides the high temperature gas to the cover body 20 and further stacks the cover body 20; and when the pressure of the high temperature gas pressure is greater than the connecting members When the combined force of 22, the cover 20 is displaced upward and a gap is formed between the cover 10 and the housing 10 for leakage of high temperature gas.

Please refer to FIG. 3 and FIG. 4 again for a cross-sectional view and a schematic view of a state of use of a preferred embodiment of the present invention. It can be seen from the figure that it is disposed between the partitions 31. The battery unit 40 has an internal battery 41 in an upright position. Therefore, when a gas explosion occurs in the battery unit 40, the high temperature gas system melts the limiting block 70 and the limiting plate 60 on the bottom side of the battery unit 40, respectively. Then, the high temperature gas system generated on the bottom side of the battery pack 40 flows from the flow guiding region 311 of the partition plate 31 to the air guiding channel 51, and the high temperature gas system generated by the top side of the battery pack 40 is flowed. The air guiding holes 321 to the top plate 32: more specifically, the flow guiding regions 311 of the partition plates 31 are for the air guiding passages 51 of the flow guiding circuit 50 to communicate with each other.

Therefore, the present invention can further ensure that the prior art battery is not disposed through the arrangement of the partitions 31 and the flow guiding area 311 for the air guiding passages 51 of the guiding circuit 50 to communicate with each other. Buffering or directing the structure of the airflow, posing a potential explosion hazard. In addition, the present invention also has the structure and arrangement of the above-mentioned baffle assembly 30, so that the present invention has the advantages of simple structure, convenient assembly and protection of the battery pack 40, and achieves better practicability and assembly convenience. safety.

It should be noted that the number of the partitions 31 of the present invention can be set according to the needs of the manufacturer. For example, only one partition 31 is provided on the bottom side of the top plate 32, or a plurality of bottom sides of the top plate 32 are provided. The spacers 31 are disposed at intervals, and the bottom side of the spacers 31 is spaced apart from the bottom of the receiving slots 11 to expand the flow guiding area 311 to increase the effect of the high temperature gas guiding flow. In more detail, the above embodiment is only one embodiment of the present invention.

It is worth mentioning that the spacer assembly 30 of the present invention can be disposed without the top plate 32, that is, the battery packs 40 are separated by only one or a plurality of partitions 31, and the battery packs 40 can also be The separators 31 are used to achieve the mutual communication of the air guiding passages 51 for providing the flow guiding circuit 50.

It is worth mentioning that the limiting plate 60 and the limiting block 70 of the present invention can be configured to It is composed of foam, so as to protect the battery pack 40 and the impact of the external force of the buffer, and the foam material has the same fusible property.

It is worth mentioning that the present invention can be set to the infinite position plate 60 and the limit block 70. More specifically, when the battery pack 40 generates a gas explosion, the high temperature gas system directly impacts the inner periphery of the partition plate 31 and the accommodating groove 11, and is guided by the air guiding passages 51 to the air guiding holes 321 At the same time, the air guiding hole 321 further conducts high temperature gas to the cover body 20; therefore, the implementation effect of the above preferred embodiment can also be achieved.

Further, the features of the present invention and the achievable expected efficacy thereof are as follows: The battery module having the baffle structure of the present invention mainly utilizes the arrangement of the baffle assembly 30, and the battery pack 40 The gap between the partition plate 31 and the inner circumference of the accommodating groove 11 is spaced apart to form the flow guiding circuit 50; therefore, when the battery unit 40 is exploded, the high temperature gas system will first impact the partition 31. And the inner circumference of the accommodating groove 11, and then the flow path 51 flows to the cover body 20 to push the cover body 20 for the high temperature gas during the explosion, and then pushes the cover body 20 to make the cover A gap is created between the body 20 and the housing 10 for leakage of high temperature gas during an explosion. Therefore, the present invention can further ensure that the prior art battery is not disposed through the arrangement of the partitions 31 and the flow guiding area 311 for the air guiding passages 51 of the guiding circuit 50 to communicate with each other. Buffering or directing the structure of the airflow, posing a potential explosion hazard.

In summary, the present invention has excellent advancement and practicability in similar products, and at the same time, the technical materials of such structures are frequently investigated at home and abroad, and the same structure is not found in the literature. The invention already has the invention patent requirements, and the application is filed according to law.

However, the above description is only one of the preferred embodiments of the present invention, and therefore, equivalent structural changes that are applied to the specification of the present invention and the scope of the patent application should be included in Within the scope of the patent of the present invention.

Claims (9)

A battery module having a baffle structure, comprising: a casing having a receiving groove recessed on one side thereof; a cover body correspondingly disposed on the casing and allowing the capacity The spacer is formed as a sealed space; a partition assembly having at least one partition disposed in the receiving groove and partitioning at least two spaces, and the partition has at least one guide a plurality of battery packs, which are disposed in the accommodating slots and located in the accommodating spaces, and the battery packs are spaced apart from the inner circumference of the partition plate and the accommodating groove; and a flow guiding circuit having a plurality of air guiding channels formed on an outer circumferential side of the battery pack and the partition plate and the receiving groove, and the air guiding channels are connected to each other, and The flow guiding zone is for the air guiding channels to communicate with each other. The battery module with a baffle structure according to claim 1, wherein the baffle assembly further comprises a top plate, wherein the top plate is provided with a plurality of air guiding holes, and the bottom side of the top plate is provided with The baffle, in turn, is in communication with the flow guiding circuit. A battery module having a baffle structure according to the second aspect of the invention, wherein the baffle assembly comprises two baffles, and the top plate and the partitions and the accommodating groove are configured There are three placement spaces. The battery module with the baffle structure according to the third aspect of the patent application further includes a plurality of limiting plates, which are respectively disposed on the air guiding channels, and at least one battery pack The bottom side is provided with a limiting plate. A battery module having a baffle structure according to claim 4, wherein the limiting plates are made of polystyrene. A battery module having a baffle structure according to claim 4, wherein the limiting plates are made of foam. A battery module having a baffle structure according to the first aspect of the invention, further comprising a circuit unit, a positive terminal and a negative terminal, wherein the circuit unit is disposed in the receiving groove and located at the partition One side of the board assembly, and the circuit unit is electrically connected to the battery pack, the positive terminal and the negative terminal, and the positive terminal and the negative terminal are disposed on the cover, and the positive terminal and the negative terminal are It is exposed on the top side of the cover. The battery module with a baffle structure according to claim 1, wherein the cover is connected to the casing through a plurality of connecting members, and the connecting members are made of a plastic material, and the connecting members are connected. The piece is adapted to push the gas to the top of the cover, and the cover is displaced upward relative to the housing. A battery module having a baffle structure according to claim 3, further comprising at least one limiting block, the top of the limiting block having a plurality of convex portions, and the limiting block is The limiting material is formed between the partitions and located on the top side of the battery pack, and the convex portions are respectively inserted into the air guiding holes.