CN-224232786-U - Energy storage box and energy storage system

CN224232786UCN 224232786 UCN224232786 UCN 224232786UCN-224232786-U

Abstract

The embodiment of the application relates to the technical field of energy storage, in particular to an energy storage box and an energy storage system. The application aims to solve the problem of insufficient control capability of a power module on a battery pack. The embodiment of the application provides an energy storage box, which comprises a box body and at least one energy storage module, wherein the box body is enclosed to form a containing cavity, the energy storage module is arranged in the containing cavity and comprises at least two battery clusters and at least two power modules, the at least two battery clusters are stacked, each battery cluster comprises a plurality of battery packs, the at least two battery clusters are in one-to-one correspondence with the at least two power modules, and each battery cluster is electrically connected with the corresponding power module. The at least two power modules are in one-to-one correspondence with the at least two battery clusters, and each battery cluster is electrically connected with the corresponding power module. The number of the power modules is increased, so that the number of the battery clusters which each power module needs to control is reduced, and the control capability of each power module on the battery clusters is improved.

Inventors

WANG YONGLING
FANG JIE
XIAO HUAFENG
HUANG BIAO
XU SHULONG

Assignees

华为技术有限公司

Dates

Publication Date: 20260512
Application Date: 20250326

Claims (14)

1. An energy storage tank, comprising: The box body is enclosed to form a containing cavity; The energy storage module is arranged in the accommodating cavity and comprises at least two battery clusters and at least two power modules, the at least two battery clusters are stacked, each battery cluster comprises a plurality of battery packs, the at least two battery clusters correspond to the at least two power modules one by one, and each battery cluster is electrically connected with the corresponding power module.
2. The tank of claim 1, wherein the at least two power modules are spaced apart at a bottom of the tank module.
3. The energy storage tank according to claim 1 or 2, wherein the charge-discharge rate of the battery pack is greater than or equal to 0.5C.
4. The energy storage box according to any one of claims 1 to 3, wherein the number of the battery clusters is two, the number of the power modules is two, the battery clusters and the power modules are in one-to-one correspondence, and each battery cluster comprises four battery packs; the number of the energy storage modules is multiple, and the multiple energy storage modules are arranged along the length direction of the box body.
5. The energy storage box of claim 4, wherein said battery clusters comprise a first battery cluster and a second battery cluster, each of said battery packs within said first battery cluster being connected in series, each of said battery packs within said second battery cluster being connected in series, said first battery cluster and said second battery cluster being connected in parallel; The power module comprises a first power module and a second power module, wherein the first power module is electrically connected with the first battery cluster, and the second power module is electrically connected with the second battery cluster.
6. The energy storage tank as claimed in claim 5, wherein the tank includes a first side wall and a second side wall disposed opposite to each other in a width direction of the tank, and a top wall and a bottom wall disposed opposite to each other in a height direction of the tank, the top wall being connected to a top end of the first side wall and a top end of the second side wall, respectively, and the bottom wall being connected to a bottom end of the first side wall and a bottom end of the second side wall, respectively; The first power module is arranged close to the first side wall, and the second power module is arranged close to the second side wall; The box body further comprises a first box door and a second box door, the first box door is arranged on the first side wall, the first box door faces the energy storage module, the second box door is arranged on the second side wall, and the second box door faces the second power module.
7. The energy storage tank of claim 6, wherein the energy storage module further comprises a liquid cooling unit disposed on top of the battery pack, the liquid cooling unit being connected to the battery pack for cooling the battery pack; The liquid cooling unit comprises a first air inlet and an air outlet, the first air inlet is arranged on the first side wall, and the air outlet is arranged on the top wall.
8. The tank of claim 7, wherein the fluid cooling unit further comprises a second air inlet disposed on the second side wall.
9. The tank of claim 8 wherein the liquid cooling unit comprises a first refrigeration unit, a first heat exchanger, a second heat exchanger, and a first fan; the first refrigerating unit is arranged at the first air inlet; The first heat exchanger and the second heat exchanger are arranged at intervals along the width direction of the box body, the first heat exchanger and the top wall are arranged at an included angle, the second heat exchanger and the top wall are arranged at an included angle, the air inlet surface of the first heat exchanger is communicated with the first air inlet, and the air inlet surface of the second heat exchanger is communicated with the second air inlet; The air inlet of the first fan is respectively communicated with the air outlet face of the first heat exchanger and the air outlet face of the second heat exchanger, and the air outlet of the first fan is communicated with the air outlet.
10. The tank of claim 7, wherein the fluid cooling unit further comprises a third air inlet disposed on the top wall, the third air inlet being spaced from the air outlet.
11. The tank of claim 10 wherein the liquid cooling unit comprises a second refrigeration unit, a third heat exchanger, and a second fan; The second refrigerating unit is arranged at the first air inlet; The third heat exchanger and the second refrigerating unit are arranged at intervals along the width direction of the box body, the third heat exchanger and the top wall are arranged at an included angle, the air inlet surface of the third heat exchanger is respectively communicated with the first air inlet and the third air inlet, and the air outlet of the second fan is communicated with the air outlet.
12. The energy storage tank of any one of claims 5-11, wherein a first through hole and a second through hole are provided at a bottom of the tank body, a cable of the first power module is connected to an external device through the first through hole, and a cable of the second power module is connected to the external device through the second through hole.
13. An energy storage system, comprising a plurality of energy storage boxes according to any one of claims 1 to 12 arranged at intervals, wherein a plurality of the energy storage boxes are arranged at intervals along the length direction of the box body, a plurality of the energy storage boxes are arranged at intervals along the width direction of the box body, and the second box doors of two adjacent energy storage boxes are arranged oppositely in the width direction of the box body.
14. The energy storage system of claim 13, wherein a spacing between two adjacent energy storage tanks in a length direction of the tank body is less than or equal to 600mm, and a spacing between two adjacent energy storage tanks in a width direction of the tank body is less than or equal to 600mm.

Description

Energy storage box and energy storage system Technical Field The application relates to the technical field of energy storage, in particular to an energy storage box and an energy storage system. Background The energy storage system comprises a plurality of energy storage boxes, each energy storage box generally comprises a liquid cooling unit, a battery pack and a power module, and the power module is connected with the battery pack, can control the battery pack and transmits current to the outside of the energy storage boxes. However, in the energy storage box, a row of battery packs corresponds to one power module, which easily results in insufficient control capability of the power module on the battery packs. Disclosure of utility model The embodiment of the application relates to the technical field of energy storage, in particular to an energy storage box and an energy storage system, which can improve the control capability of a power module on a battery pack. In a first aspect, an embodiment of the present application provides an energy storage box, including a box body and at least one energy storage module, where the box body encloses a containing cavity, the energy storage module is disposed in the containing cavity, the energy storage module includes at least two battery clusters and at least two power modules, at least two battery clusters are stacked, each battery cluster includes a plurality of battery packs, at least two battery clusters are in one-to-one correspondence with at least two power modules, and each battery cluster is electrically connected with a corresponding power module. The at least two power modules are in one-to-one correspondence with the at least two battery clusters, and each battery cluster is electrically connected with the corresponding power module. The number of the power modules is increased, so that the number of the battery clusters which each power module needs to control is reduced, and the control capability of each power module on the battery clusters is improved. In some embodiments, which may include the above embodiments, at least two power modules are spaced apart at the bottom of the energy storage module. The at least two power modules are arranged at the bottom of the battery cluster, so that wiring difficulty between the power modules and the battery cluster can be reduced, and partition management of the battery cluster and the power modules is facilitated. Meanwhile, the power module is more convenient to connect with external equipment. In some embodiments, which may include the above embodiments, a bottom of the case is provided with a first through hole through which the cable of the first power module is connected to the external device and a second through hole through which the cable of the second power module is connected to the external device. The power module is located the bottom of battery cluster, and the cable can be through the through-hole of box bottom, and direct and external equipment are connected, can save the space in the energy storage case, avoids the energy storage case to additionally set up the chamber door simultaneously and maintains the cable, has reduced the preparation degree of difficulty of energy storage case, simultaneously, has shortened the distance between two adjacent energy storage cases to improve energy storage system's area density. In some embodiments, which may include the above embodiments, the charge-discharge rate of the battery pack is greater than or equal to 0.5C. The energy storage box provided by the embodiment of the application can be applied to a high-rate scene, and the application scene of the energy storage box is wider. In some embodiments, which may include the above embodiments, the number of battery clusters is two, the number of power modules is two, the battery clusters and the power modules are in one-to-one correspondence, and each battery cluster includes four battery packs. The quantity of energy storage module is a plurality of, and a plurality of energy storage modules set up along the length direction of box. The battery clusters are in one-to-one correspondence with the power modules, each battery cluster is controlled by one power module, and the control capability of the power module on the battery clusters can be ensured. The quantity of the energy storage modules is multiple, the multiple energy storage modules are arranged along the length direction of the box body, the more the quantity of the energy storage modules is, the larger the capacity of the energy storage box is, and the capacity of the energy storage box can be controlled by adjusting the quantity of the energy storage modules. In some embodiments, which may include the above embodiments, the battery clusters include a first battery cluster in which the battery packs are connected in series and a second battery cluster in which the battery packs are connected in series, the first battery cluster and the seco