Heat dissipation structure of battery module and battery module

Abstract

The heat dissipation structure comprises a plurality of battery cells which are arranged in parallel, a heat dissipation partition plate is arranged between every two adjacent battery cells, the front end face and the rear end face of each heat dissipation partition plate abut against the corresponding adjacent battery cell, a heat dissipation air channel is formed in each heat dissipation partition plate, and the heat dissipation air channels are communicated with the battery cells. The heat dissipation air channel penetrates through the left side face and the right side face of the heat dissipation partition plate, a hollow hole is formed in the end face of the heat dissipation partition plate, the hollow hole is communicated with the heat dissipation air channel, and the hollow hole penetrates through the front end face and the rear end face of the heat dissipation partition plate. According to the utility model, the hollow holes are formed, so that part of the end surfaces of the battery cells are directly communicated with the heat dissipation air channels, heat generated by the battery cells can be directly dissipated into the heat dissipation air channels, the heat dissipation efficiency can be effectively improved, and the working safety is ensured; and the material heat conductivity coefficient of the heat dissipation partition plate is not required, so that the manufacturing cost of the battery module is better controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage systems, in particular to a heat dissipation structure of a battery module and a battery module. Background Art

[0002] The battery energy storage system is an energy storage system composed of storage batteries and parallel voltage-type converters. There are multiple battery modules in the battery energy storage system, and each battery module consists of multiple battery cells connected in series. The battery cells will inevitably generate heat during the charging and discharging process, so the existing battery modules are basically provided with a heat dissipation structure to ensure the safety of the battery cells. In the currently common battery modules, a heat dissipation partition is provided between the two battery cells, and a heat dissipation duct is provided inside the heat dissipation partition. A heat dissipation fan is installed on the battery module, and the two end faces of the heat dissipation partition are respectively in contact with the two battery cells. During operation, the heat generated by the battery cells will directly exchange heat with the heat dissipation partition, and the heat on the heat dissipation partition will be conducted into the heat dissipation duct; and the operation of the heat dissipation fan allows the external cold air to flow into the heat dissipation duct, taking away the hot air, thereby achieving the purpose of dissipating heat from the battery cells. The above-mentioned prior art still has at least the following problems:

[0003] The contact surfaces between the battery cells and the heat dissipation baffles are both solid metal surfaces. During operation, the heat generated by the battery cells first enters the metal material of the heat dissipation baffle through heat conduction. Only when the heat is conducted to the heat dissipation air duct can it be carried away by the cold air, so the heat dissipation efficiency is relatively low. In addition, this heat dissipation structure is more dependent on the thermal conductivity of the heat dissipation baffle material itself. If the thermal conductivity is low, the heat dissipation effect will be extremely poor. If materials with very high thermal conductivity are used, the procurement cost may be relatively high. Utility Model Content

[0004] In order to solve some or all of the problems existing in the above-mentioned prior art, on the one hand, the utility model provides a heat dissipation structure of a battery module, comprising a plurality of battery cells arranged in parallel, a heat dissipation partition is provided between adjacent battery cells, the front and rear end faces of the heat dissipation partition are respectively abutted against adjacent battery cells, a heat dissipation duct is provided in the heat dissipation partition, the heat dissipation duct passes through the left and right side faces of the heat dissipation partition, a hollow hole is provided on the end face of the heat dissipation partition, the hollow hole is connected to the heat dissipation duct, and the hollow hole passes through the front and rear end faces of the heat dissipation partition.

[0005] As a further improvement of the present invention, there are multiple hollow holes, and the multiple hollow holes are distributed in a circular array along the geometric center of the heat dissipation baffle.

[0006] As a further improvement of the present invention, there are four hollow holes, and the orthographic projection shape of the hollow holes is a triangle.

[0007] As a further improvement of the present invention, X-shaped support strips are respectively provided on the front and rear end surfaces of the heat dissipation baffle, and the center of the X-shaped support strip coincides with the intersection of the diagonals of the heat dissipation baffle.

[0008] As a further improvement of the present invention, a support column is provided in the heat dissipation duct, and both ends of the support column are respectively connected to the X-shaped support bar.

[0009] As a further improvement of the present invention, the support column includes a first support column and a second support column, the center of the first support column coincides with the center of the X-shaped support bar, and the second support columns are symmetrically distributed on both sides of the first support column.

[0010] As a further improvement of the present invention, there are four second support columns.

[0011] On the other hand, the utility model also provides a battery module including the above-mentioned heat dissipation structure, which also includes a shell, the battery cell is connected to the shell, the shell is provided with an air inlet and an air outlet, and a cooling fan is provided at a position corresponding to the air outlet in the shell, and the cooling fan is used to blow air toward the air outlet.

[0012] As a further improvement of the present invention, an air inlet dust cover is provided on the air inlet, and the air inlet dust cover is connected to the shell.

[0013] As a further improvement of the present invention, a locking steel belt is sleeved on the periphery of the battery core.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This utility model provides hollow holes in the heat dissipation baffle, which are connected to the heat dissipation duct. This allows part of the end surface of the battery cell to be directly connected to the heat dissipation duct, allowing the heat generated by the battery cell to be directly dissipated into the heat dissipation duct without the need for heat conduction through the heat dissipation baffle. This can effectively improve heat dissipation efficiency and ensure work safety. In addition, the direct connection between the battery cell and the heat dissipation duct eliminates the need to rely on the thermal conductivity of the heat dissipation baffle material, allowing the use of more cost-effective materials, thereby better controlling the production cost of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1This is a schematic diagram of the external structure of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the heat dissipation baffle in an embodiment of the present utility model;

[0020] Figure 4 It is a schematic diagram of the internal structure of the heat dissipation baffle in an embodiment of the present utility model. DETAILED DESCRIPTION

[0021] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meanings as commonly understood by those skilled in the art to which this utility model belongs. The terms used in the specification are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The terms "including" and "having" and any variations thereof in the specification and claims of this utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this utility model or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0022] References to "embodiments" in this disclosure mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to mutually exclusive, independent, or alternative embodiments to other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this disclosure may be combined with other embodiments.

[0023] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0024] like Figure 1-4As shown, a battery module includes a shell 1, in which a plurality of battery cells 2 arranged in parallel are arranged. Two locking steel bands 3 are sleeved on the outer periphery of the battery cells 2. The locking steel bands 3 fix all the battery cells 2 into a whole, thereby improving the stability of the structure. A heat dissipation baffle 4 is provided between each adjacent battery cell 2. The front and rear end surfaces of the heat dissipation baffle 4 are respectively in contact with the adjacent battery cells 2. A heat dissipation duct 41 is provided in the heat dissipation baffle 4. An air inlet 11 and an air outlet 12 are provided on the shell 1. A heat dissipation fan 5 is installed at a position corresponding to the air outlet 12 in the shell 1. The heat dissipation fan 5 is used to blow air in the direction of the air outlet 12. During operation, the heat generated by charging and discharging of the battery cell 2 will be conducted to the heat dissipation duct 41 through the heat dissipation baffle 4. The heat dissipation fan 5 will work to make the air inside the shell 1 flow out toward the air outlet 12, and the external cold air will flow into the shell 1 through the air inlet 11, and then flow into the heat dissipation duct 41 to take away the heat, and then flow out from the air outlet 12, realizing air flow circulation and dissipating heat to the battery cell 2.

[0025] In order to reduce dust from entering the housing 1, an air inlet dust cover 6 is provided on the air inlet 11, and the air inlet dust cover 6 is connected to the housing 1. The air inlet dust cover 6 can reduce dust from entering the housing 1, thereby improving the working stability of the battery module and extending the service life.

[0026] The heat dissipation duct 41 runs through the left and right sides of the heat dissipation baffle 4. The transversely distributed heat dissipation duct 41 can be directly connected to the air inlet 11, so that the cold air entering the air inlet 11 can directly flow into the heat dissipation duct 41, thereby improving the heat dissipation efficiency.

[0027] To further improve heat dissipation efficiency, hollow holes 42 are provided on the end faces of the heat dissipation baffle 4. Hollow holes 42 are connected to the heat dissipation duct 41 and extend through the front and rear ends of the heat dissipation baffle 4. By providing hollow holes 42 on the heat dissipation baffle 4 and connecting the hollow holes 42 to the heat dissipation duct 41, the battery module allows portions of the end faces of the battery cells 2 to be directly connected to the heat dissipation duct 41. This allows heat generated by the battery cells 2 to be directly dissipated into the heat dissipation duct 41 without requiring heat conduction through the heat dissipation baffle 4, effectively improving heat dissipation efficiency and ensuring work safety. Furthermore, the direct connection between the battery cells 2 and the heat dissipation duct 41 eliminates the need to rely on the thermal conductivity of the heat dissipation baffle 4 material, allowing the use of more cost-effective materials, thereby better controlling the production cost of the battery module.

[0028] In order to improve the heat dissipation efficiency, multiple hollow holes 42 can be opened, and multiple hollow holes 42 are distributed in a circular array along the geometric center of the heat dissipation partition 4; by setting multiple hollow holes 42, the contact area between the end face of the battery cell 2 and the heat dissipation duct 41 can be increased, thereby improving the heat dissipation efficiency.

[0029] In this embodiment, there are four hollow holes 42, and the orthographic projection of the hollow holes 42 is a triangle. In other embodiments, the hollow holes 42 can also be any other number or shape, and the present invention is not limited to this.

[0030] In order to ensure the structural rigidity of the heat dissipation baffle 4, X-shaped support bars 43 are respectively provided on the front and rear end surfaces of the heat dissipation baffle 4, and the center of the X-shaped support bar 43 coincides with the intersection of the diagonals of the heat dissipation baffle 4. In this embodiment, the X-shaped support bar 43 is also a part of the heat dissipation baffle 4. By retaining the X-shaped support bar 43 on the front and rear end surfaces of the heat dissipation baffle 4, the structural rigidity of the heat dissipation baffle 4 can be guaranteed, and the battery cells 2 can be prevented from breaking or deforming it. In this embodiment, the X-shaped support bars 43 on the front and rear end surfaces of the heat dissipation baffle 4 are arranged corresponding to each other; in other embodiments, the X-shaped support bars 43 on the front and rear end surfaces of the heat dissipation baffle 4 can also be staggered, and the shape of the support bars can also be any other shape. It is only necessary to ensure that a partial support structure is reserved on the end surface when processing the hollow hole 42.

[0031] To further enhance the structural rigidity of the heat dissipation baffle 4, support columns are provided within the heat dissipation duct 41. The two ends of the support columns are connected to X-shaped support bars 43. In this embodiment, the support columns are integrally formed with the heat dissipation baffle 4; in other embodiments, the support columns can be separate components secured to the heat dissipation baffle 4 by welding or screwing. The provision of support columns within the heat dissipation duct 41 enhances the overall structural rigidity of the heat dissipation baffle 4 and reduces the likelihood of deformation or breakage during assembly or use.

[0032] Specifically, in this embodiment, the support columns include a first support column 44 and a second support column 45. The first support column 44 is positioned at the center of the X-shaped support bar 43, with the center of the first support column 44 coinciding with the center of the X-shaped support bar 43. There are four second support columns 45, symmetrically distributed on either side of the first support column 44; that is, there is a second support column 45 on each of the four sides of the X-shaped support bar 43. The coordination of the first support column 44 and the second support column 45 ensures uniform force on the end surface of the heat dissipation baffle 4, ensuring the overall structural rigidity of the heat dissipation baffle 4 and preventing deformation and fracture.

[0033] In other embodiments, the number of the second support pillars 45 may be any other number, as long as they are symmetrically distributed on both sides of the first support pillar 44 .

[0034] The above-mentioned specific implementation manner is a preferred implementation manner of the present utility model, and is not intended to limit the specific implementation scope of the present utility model. The scope of the present utility model includes but is not limited to the specific implementation manner. All equivalent changes made in accordance with the present utility model are within the protection scope of the present utility model.

Claims

1. A heat dissipation structure for a battery module, characterized in that: It includes multiple battery cells arranged in parallel, and a heat dissipation partition is provided between adjacent battery cells. The front and rear end faces of the heat dissipation partition are respectively in contact with the adjacent battery cells. A heat dissipation duct is provided in the heat dissipation partition, and the heat dissipation duct passes through the left and right side faces of the heat dissipation partition. A hollow hole is provided on the end face of the heat dissipation partition, and the hollow hole is connected to the heat dissipation duct, and the hollow hole passes through the front and rear end faces of the heat dissipation partition.

2. The heat dissipation structure of the battery module according to claim 1, characterized in that: There are multiple hollow holes, and the multiple hollow holes are distributed in a circular array along the geometric center of the heat dissipation baffle.

3. The heat dissipation structure of the battery module according to claim 2, characterized in that: There are four hollow holes, and the orthographic projection of the hollow holes is a triangle.

4. The heat dissipation structure of the battery module according to claim 3, characterized in that: X-shaped support strips are respectively provided on the front and rear end surfaces of the heat dissipation baffle, and the centers of the X-shaped support strips coincide with the intersection points of the diagonals of the heat dissipation baffle.

5. The heat dissipation structure of the battery module according to claim 4, characterized in that: A support column is provided in the heat dissipation air duct, and both ends of the support column are respectively connected to the X-shaped support bar.

6. The heat dissipation structure of the battery module according to claim 5, characterized in that: The support column includes a first support column and a second support column. The center of the first support column coincides with the center of the X-shaped support bar. The second support columns are symmetrically distributed on both sides of the first support column.

7. The heat dissipation structure of the battery module according to claim 6, characterized in that: There are four second supporting columns.

8. A battery module comprising the heat dissipation structure according to any one of claims 1 to 7, characterized in that: It also includes a shell, the battery core is connected to the shell, the shell is provided with an air inlet and an air outlet, a cooling fan is provided at a position corresponding to the air outlet in the shell, and the cooling fan is used to blow air toward the air outlet.

9. The battery module according to claim 8, characterized in that: An air inlet dust cover is provided on the air inlet, and the air inlet dust cover is connected to the shell.

10. The battery module according to claim 8, wherein: The periphery of the battery core is sleeved with a locking steel belt.

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