Safety grid and battery module

Abstract

The invention discloses a safety grid and a battery module, the safety grid comprises a grid body, the grid body is provided with a first support strip and a plurality of second support strips, the first support strip and the second support strips are embedded in a gap between two adjacent battery blocks, the first support strip horizontally extends along the length direction of the gap, and the second support strip horizontally extends along the length direction of the gap. The second supporting strips are located above the first supporting strip and extend in the vertical direction, the bottom ends of the second supporting strips are connected to the top of the first supporting strip, the second supporting strips are distributed in the length direction of the gap at equal intervals, and a liquid guiding interval is formed between every two adjacent second supporting strips and the first supporting strip; the side walls between every two adjacent battery blocks are attached to the openings in the two sides of the liquid guide intervals respectively, and the liquid storage grooves used for storing the cooling liquid are formed, so that the battery blocks can be prevented from bulging and deforming, meanwhile, the cooling liquid can be stored between every two adjacent battery blocks, the battery blocks are fully cooled, and the safe and controllable effects are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a safety grille and a battery module. Background Art

[0002] Existing battery packs or battery cabinets almost all have no automatic fire extinguishing function. When the battery catches fire due to excessive internal temperature caused by overcharge and discharge, puncture of the internal battery plate, or due to external factors such as aging and severe wear of the line, serious safety accidents may occur. In order to avoid causing more serious fires, the existing technology mainly uses a sprinkler fire extinguishing system to spray the battery to extinguish the fire. However, the flow of the cooling liquid sprayed by the sprinkler fire extinguishing system is not controllable, which easily leads to limited cooling effect on the battery block. Summary of the invention

[0003] The object of the present invention is to provide a safety grille and a battery module to solve the problems existing in the above-mentioned prior art, so as to prevent the battery blocks from bulging and deforming, and at the same time, to accumulate cooling liquid between two adjacent battery blocks, to fully cool the battery blocks, and to achieve a safe and controllable effect.

[0004] To achieve the above-mentioned purpose, the present invention provides the following scheme: The present invention provides a safety grille, including a grille body, the grille body is provided with a first support bar and a plurality of second support bars, the first support bar and the second support bar are both embedded in the gap between two adjacent battery blocks, the first support bar extends horizontally along the length direction of the gap, each of the second support bars is located above the first support bar and extends along the vertical direction, the bottom end of each of the second support bars is connected to the top of the first support bar, each of the second support bars is evenly spaced along the length direction of the gap, a liquid guide gap is formed between two adjacent second support bars and the first support bar, and the side walls between two adjacent battery blocks are respectively attached to the openings on both sides of the liquid guide gap to form a liquid storage tank for accumulating cooling liquid.

[0005] Preferably, the radial cross-sections of the first support bar and the second support bar are both rectangular structures;

[0006] The first support bar has first side walls on both sides along the width direction of the gap, and the two first side walls are respectively tightly attached to the side walls of the corresponding battery block;

[0007] The second support bar has second side walls on both sides along the width direction of the gap, and the two second side walls are respectively and closely attached to the corresponding side walls of the battery block.

[0008] Preferably, a plurality of reinforcing bars are connected between two adjacent second support bars, the reinforcing bars are evenly spaced in the vertical direction, and there is a gap between the reinforcing bars and the corresponding side walls of the battery block for the cooling liquid to pass through.

[0009] Preferably, the thickness of the first support bar and the second support bar matches the width of the gap, the thickness of the reinforcement bar is thinner than that of the second support bar, and the end of the reinforcement bar is connected to the middle position of the second support bar along its thickness direction.

[0010] Preferably, the first support bar, the second support bar and the reinforcement bar are all in a straight bar structure.

[0011] Preferably, the two outermost second support bars are respectively arranged at the two ends of the gap along the length direction of the gap, and the length of the second support bar matches the height of the gap. The first support bar is located at the bottom of the gap, and its length matches the length of the gap.

[0012] Preferably, a lap bar is connected to the top of at least one of the second support bars, the lap bar is located above the gap, and two ends thereof protrude from both sides of the second support bar along the gap width direction and are respectively lapped on the top walls of the two battery blocks.

[0013] A battery module is also provided, comprising a plurality of battery blocks arranged in sequence along the same straight line direction, a gap being provided between two adjacent battery blocks for separating the two, a safety grille being embedded in each of the gaps, and the battery blocks being equipped with a binding mechanism, which surrounds and tightens the outer circumference of all the battery blocks for clamping the safety grille between two adjacent battery blocks.

[0014] A battery is also provided, comprising a battery box, wherein a spray mechanism and a plurality of battery modules are provided in the battery box, wherein the battery modules are arranged in sequence at equal intervals along the same straight line direction, wherein the spray mechanism is provided with a liquid inlet pipe and a plurality of nozzles connected to the liquid inlet pipe, wherein the liquid inlet pipe is connected to a liquid supply tank located outside the battery box, and each nozzle array is arranged above an area where each battery module is located.

[0015] Preferably, a cooling plate is provided in the battery box, and each of the battery modules is mounted on the cooling plate.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The first support bar and the second support bar are constantly supported between two adjacent battery blocks. On the one hand, they can play a heat insulating role. When the high temperature generated by an internal short circuit in a battery block is out of control, it will not be quickly transmitted to the battery blocks on both sides. On the other hand, when the battery block is thermally expanded by charging and discharging, the battery block can be stably supported and will not be deformed, thereby ensuring that the performance of the battery block changes minimally during the use cycle. When the high temperature generated by an internal short circuit in a battery block exceeds a predetermined value, the spray mechanism is turned on to release cooling liquid. The cooling liquid passes through the top position between the two adjacent second support bars and flows into the liquid storage tank for accumulation. The battery block is cooled by the cooling liquid accumulated in the liquid storage tank, so as to effectively control the temperature of the battery block and prevent the occurrence of fire. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A front view of a battery module according to an embodiment of the present invention;

[0020] Figure 2 is a side view of a battery in one embodiment of the present invention;

[0021] Figure 3 Schematic diagram of the combination of the grid body and the battery block in one embodiment of the present invention Figure 1 ;

[0022] Figure 4 Schematic diagram of the combination of the grid body and the battery block in one embodiment of the present invention Figure 2 ;

[0023] Figure 5 It is a front view of the sprinkler mechanism in one embodiment of the present invention when extinguishing a fire;

[0024] Figure 6 A side view of a sprinkler mechanism in an embodiment of the present invention when extinguishing a fire;

[0025] Figure 7 A top view of a sprinkler mechanism in an embodiment of the present invention when extinguishing a fire;

[0026] Among them, 1-battery block, 2-binding mechanism, 3-grid body, 4-lap bar, 5-second support bar, 6-first support bar, 7-reinforcement bar, 8-liquid storage tank, 9-solenoid valve, 10-liquid inlet pipe, 11-nozzle, 12-cooling plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] The object of the present invention is to provide a safety grille and a battery module to solve the problems existing in the above-mentioned prior art, so as to prevent the battery blocks from bulging and deforming, and at the same time, to accumulate cooling liquid between two adjacent battery blocks, to fully cool the battery blocks, and to achieve a safe and controllable effect.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1 to 7 As shown, the present embodiment provides a safety grille, including a grille body 3, the grille body 3 is provided with a first support bar 6 and a plurality of second support bars 5, the first support bar 6 and the second support bar 5 are both embedded in the gap between two adjacent battery blocks 1, preferably the first support bar 6 and the second support bar 5 are both made of hard material to ensure that the first support bar 6 and the second support bar 5 can be constantly supported between two adjacent battery blocks 1, on the one hand, it can play a heat insulation role, when a battery block 1 is short-circuited and out of control, the high temperature generated will not be quickly transmitted to the battery blocks 1 on both sides, on the other hand, it can stably support the battery block 1 when the battery block 1 is thermally expanded during charging and discharging, so as to ensure that the performance change of the battery block 1 during the use cycle is minimal; the first support bar 6 extends horizontally along the length direction of the gap, Each second support bar 5 is located above the first support bar 6 and extends in the vertical direction. The bottom end of each second support bar 5 is connected to the top of the first support bar 6. The second support bars 5 are evenly spaced along the length direction of the gap. A liquid guide gap is formed between two adjacent second support bars 5 and the first support bar 6. The side walls between two adjacent battery blocks 1 are respectively attached to the openings on both sides of the liquid guide gap, and a liquid storage tank 8 is formed for storing cooling liquid. Then, when the high temperature generated by a short circuit in a battery block 1 exceeds a predetermined value, the spray mechanism is turned on to release the cooling liquid. The cooling liquid passes through the top position between the two adjacent second support bars 5 and flows into the liquid storage tank 8 for storage. The cooling liquid accumulated in the liquid storage tank 8 is used to cool the battery block 1, so as to effectively control the temperature of the battery block 1 and prevent the occurrence of fire.

[0031] In a specific embodiment, the radial cross-sections of the first support bar 6 and the second support bar 5 are both rectangular structures; the first support bar 6 has first side walls on both sides along the gap width direction, and the two first side walls are respectively tightly fitted on the side walls of the corresponding battery block 1; the second support bar 5 has second side walls on both sides along the gap width direction, and the two second side walls are respectively tightly fitted on the side walls of the corresponding battery block 1, so that the side walls of the first support bar 6 and the second support bar 5 are both fitted on the side walls of the corresponding battery block 1, and then a relatively closed and top-open liquid storage tank 8 is formed between the two battery blocks 1, the first support bar 6, and the two adjacent second support bars 5, so that the cooling liquid can be stored in the liquid storage tank 8.

[0032] In a specific embodiment, a plurality of reinforcing bars 7 are connected between two adjacent second support bars 5, and the reinforcing bars 7 are evenly spaced in the vertical direction, and there is a gap between the reinforcing bars 7 and the corresponding side walls of the battery block 1 for the passage of cooling liquid. The second support bars 5 are supported and reinforced by the reinforcing bars 7, thereby ensuring that during the charging and discharging process of the battery block 1, the second support bars 5 can form effective abutment support for the battery blocks 1 on both sides.

[0033] In a specific embodiment, the thickness of the first support bar 6 and the second support bar 5 matches the width of the gap, the thickness of the reinforcing bar 7 is thinner than the second support bar 5, and the end of the reinforcing bar 7 is connected to the middle position of the second support bar 5 along the thickness direction thereof, so as to optimize the thickness of the reinforcing bar 7, so that the reinforcing bar 7 and the corresponding battery block 1 form a gap for the cooling liquid to pass through, thereby ensuring that the cooling liquid accumulates in the liquid storage tank 8. Preferably, the thickness of the first support bar 6 and the second support bar 5 are both 10 mm, and match the width of the gap, and the thickness of the reinforcing bar 7 is 2 mm, thereby reserving a gap of about 4 mm on both sides of the reinforcing bar 7.

[0034] In a specific embodiment, the first support bar 6, the second support bar 5 and the reinforcing bar 7 are all in a straight bar structure. Preferably, the two second support bars 5 located at the outermost sides are respectively arranged at the two ends of the gap along the length direction of the gap, and the length of the second support bar 5 matches the height of the gap, and the first support bar 6 is located at the bottom of the gap, and its length matches the length of the gap, so that the structure of the entire grid body 3 matches the structure of the gap, and effective support for two adjacent battery blocks 1 is achieved.

[0035] In a specific embodiment, a lap bar 4 is connected to the top of at least one second support bar 5, and the lap bar 4 is located above the gap, and its two ends protrude from both sides of the second support bar 5 along the gap width direction, and are respectively overlapped on the top walls of the two battery blocks 1, so that during the installation of the entire grille body 3, the grille body 3 is prevented from being in the corresponding gap, and the two ends of the lap bar 4 are overlapped on the top walls of the corresponding battery blocks 1, so as to facilitate the positioning of the grille body 3 in the gap, thereby achieving the effect of easy installation.

[0036] Furthermore, a battery module is provided, comprising a plurality of battery blocks 1 arranged in sequence along the same straight line direction, a gap being provided between two adjacent battery blocks 1 for separating the two, a safety grille being embedded in each gap, and the battery blocks 1 being equipped with a binding mechanism 2, which surrounds and tightens the outer periphery of all battery blocks 1 for clamping the safety grille between two adjacent battery blocks 1. Preferably, the binding mechanism 2 uses a binding belt to wrap the entire battery module so that the two adjacent battery blocks 1 clamp the grille body 3 located in the middle, thereby making full use of the grille body 3 to achieve heat insulation and avoid battery deformation.

[0037] Furthermore, a battery is provided, comprising a battery box, wherein a spray mechanism and a plurality of battery modules are provided in the battery box, wherein the battery modules are arranged at equal intervals in the same straight line direction, wherein the spray mechanism is provided with a liquid inlet pipe 10 and a plurality of nozzles 11 which are all connected to the liquid inlet pipe 10, wherein the liquid inlet pipe 10 is connected to a liquid supply box located outside the battery box, and preferably an electromagnetic valve 9 is provided between the liquid inlet pipe 10 and the liquid supply box, and wherein the battery box is provided with a temperature sensor which is electrically connected to the battery valve, so that after monitoring that a certain battery block 1 has reached a corresponding temperature, a corresponding signal is sent through the temperature sensor, and the electromagnetic valve 9 is opened, thereby supplying liquid to each nozzle 11, and the cooling liquid is sprayed onto each battery module through each nozzle 11, and an array of each nozzle 11 is arranged above the area where each battery module is located, so as to ensure uniformity of the cooling liquid spraying in the entire battery box, and enable the cooling liquid to be sprayed into the interval between two adjacent battery modules in the same manner, so as to ensure sufficient cooling effect in the entire battery box.

[0038] In a specific embodiment, a cooling plate 12 is provided in the battery box, and each battery module is mounted on the cooling plate 12 so that the temperature of the battery module is conducted through the cooling plate 12 to further achieve a cooling effect on the battery module.

[0039] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0040] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numerals in the claims should not be regarded as limiting the claims involved.

[0041] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A safety grille, characterized in that: The invention comprises a grille body, wherein the grille body is provided with a first support bar and a plurality of second support bars, wherein the first support bar and the second support bar are both embedded in a gap between two adjacent battery blocks, the first support bar extends horizontally along the length direction of the gap, each of the second support bars is located above the first support bar and extends along the vertical direction, the bottom end of each of the second support bars is connected to the top of the first support bar, each of the second support bars is evenly spaced along the length direction of the gap, a liquid conducting gap is formed between two adjacent second support bars and the first support bar, and the side walls between two adjacent battery blocks are respectively attached to the openings on both sides of the liquid conducting gap to form a liquid storage tank for storing cooling liquid.

2. The safety grille according to claim 1, characterized in that: The radial cross-sections of the first support bar and the second support bar are both rectangular structures; The first support bar has first side walls on both sides along the width direction of the gap, and the two first side walls are respectively tightly attached to the side walls of the corresponding battery block; The second support bar has second side walls on both sides along the width direction of the gap, and the two second side walls are respectively and closely attached to the corresponding side walls of the battery block.

3. The safety grille according to claim 1 or 2, characterized in that: A plurality of reinforcing bars are connected between two adjacent second support bars, and the reinforcing bars are evenly spaced in the vertical direction, and a gap for cooling liquid to pass through is provided between the reinforcing bars and the corresponding side walls of the battery block.

4. The safety grille according to claim 3, characterized in that: The thickness of the first support bar and the second support bar matches the width of the gap, the thickness of the reinforcement bar is thinner than that of the second support bar, and the end of the reinforcement bar is connected to the middle position of the second support bar along the thickness direction thereof.

5. The safety grille according to claim 4, characterized in that: The first support bar, the second support bar and the reinforcement bar are all in a straight bar structure.

6. The safety grille according to claim 5, characterized in that: The two outermost second support bars are respectively arranged at the two ends of the gap along the length direction of the gap, and the length of the second support bars matches the height of the gap. The first support bar is located at the bottom of the gap, and its length matches the length of the gap.

7. The safety grille according to claim 6, characterized in that: A lap bar is connected to the top of at least one of the second support bars. The lap bar is located above the gap, and two ends of the lap bar protrude from both sides of the second support bar along the gap width direction and are respectively lapped on the top walls of the two battery blocks.

8. A battery module, characterized in that: It comprises a plurality of battery blocks arranged in sequence along the same straight line direction, a gap being provided between two adjacent battery blocks for separating the two, a safety grille as claimed in any one of claims 1 to 7 being embedded in each of the gaps, the battery blocks being equipped with a binding mechanism, the binding mechanism being surrounded and tightened on the outer circumference of all the battery blocks for clamping the safety grille between two adjacent battery blocks.

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